18
Apr
AB2

Sudden change in current variation (SCCVPTOC) for DTT _ Setting & highlights _ AB2111

Posted on by Firoozeh

Overview

The “Sudden change in current variation” function is a fast way of finding any abnormality in line currents. When there is a fault in the system, the current changes faster than the voltage. SCCVPTOC finds abnormal condition based on phase-to-phase current variation. The main application is as a local criterion to increase security when transfer trips are used.

For more detailed information on “Sudden change in current variation” function, refer to ABB, Relion 670 Series manuals.

To see other supported functions, click here.

Function Identification

Function description IEC 61850
identification		 IEC 60617
identification		 ANSI/IEEE C37.2
device number
Sudden change in current variation SCCVPTOC – 51

Signals & Setting Parameters

SCCVPTOC function block

SCCVPTOC function block

SCCVPTOC Input signals

SCCVPTOC Input signals
Name Type Default Description
I3P GROUP SIGNAL – Three phase to phase current samples group
BLOCK BOOLEAN 0 Block of function
BLKTR BOOLEAN 0 Block trip signals

SCCVPTOC Output signals

SCCVPTOC Output signals
Name Type Description
TRIP BOOLEAN Common trip signal
START BOOLEAN Common start signal

SCCVPTOC Group settings (basic)

SCCVPTOC Group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Off
On		 – – Off Operation Off/On
I> 5 – 100 %IB 1 20 Fixed threshold setting in % of IBase
tHold 0.000 – 60.000 s 0.001 0.500 Hold time for operate signals

SCCVPTOC Group settings (advanced)

SCCVPTOC Group settings (advanced)
Name Values (Range) Unit Step Default Description
tDelay 0.000 – 0.005 s 0.001 0.002 Time delay for start and trip signals

SCCVPTOC Non group settings (basic)

SCCVPTOC Non group settings (basic)
Name Values (Range) Unit Step Default Description
GlobalBaseSel 1 – 12 – 1 1 Selection of one of the Global Base Value groups

Logics & highlights

Operation principle

Operation principle
Technical data

SCCVPTOC technical data

SCCVPTOC technical data
18
Apr
AB2

Compensated over and undervoltage protection (COUVGAPC) for DTT _ Setting & highlights _ AB2110

Posted on by Firoozeh

Overview

The “Compensated over and undervoltage protection” function calculates the remote end voltage of the transmission line utilizing local measured voltage, current and with the help of transmission line parameters, that is, line resistance, reactance, capacitance and local shunt reactor. For protection of long transmission line for in zone faults, COUVGAPC can be incorporated with local criteria within direct transfer trip logic to ensure tripping of the line only under abnormal conditions.

For more detailed information on “Compensated over and undervoltage protection” function, refer to ABB, Relion 670 Series manuals.

To see other supported functions, click here.

Function Identification

Function description IEC 61850
identification		 IEC 60617
identification		 ANSI/IEEE C37.2
device number
Compensated over and undervoltage protection COUVGAPC – 59_27

Signals & Setting Parameters

COUVGAPC function block

COUVGAPC function block

COUVGAPC Input signals

COUVGAPC Input signals
Name Type Default Description
I3P GROUP SIGNAL – Group signal for current inputs
U3P GROUP SIGNAL – Group signal for voltage inputs
BLOCK BOOLEAN 0 Block of the function
BLKTR BOOLEAN 0 Blocks all operate outputs
SWIPOS BOOLEAN 1 Local shunt reactor connected or not

COUVGAPC Output signals

COUVGAPC Output signals
Name Type Description
TRUV BOOLEAN Common trip signal for compensated under voltage
TROV BOOLEAN Common trip signal for compensated over voltage
TRUVL1 BOOLEAN Trip signal for compensated under voltage of phase 1
TRUVL2 BOOLEAN Trip signal for compensated under voltage of phase 2
TRUVL3 BOOLEAN Trip signal for compensated under voltage of phase 3
TROVL1 BOOLEAN Trip signal for compensated over voltage of phase 1
TROVL2 BOOLEAN Trip signal for compensated over voltage of phase 2
TROVL3 BOOLEAN Trip signal for compensated over voltage of phase 3
STUV BOOLEAN Common start signal for compensated under voltage
STOV BOOLEAN Common start signal for compensated over voltage
STUVL1 BOOLEAN Start signal for compensated under voltage of phase 1
STUVL2 BOOLEAN Start signal for compensated under voltage of phase 2
STUVL3 BOOLEAN Start signal for compensated under voltage of phase 3
STOVL1 BOOLEAN Start signal for compensated over voltage of phase 1
STOVL2 BOOLEAN Start signal for compensated over voltage of phase 2
STOVL3 BOOLEAN Start signal for compensated over voltage of phase 3

COUVGAPC Group settings (basic)

COUVGAPC Group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Off
On		 – – Off Operation Off/On
OperationUV Off
On		 – – On Operation compensated under voltage Off/On
U< 1 – 100 %UB 1 70 Compensated under voltage level in % of UBase
tUV 0.000 – 60.000 s 0.001 1.000 Time delay to trip under voltage
OperationOV Off
On		 – – On Operation compensated over voltage Off/On
U> 1 – 200 %UB 1 120 Compensated over voltage level in % of UBase
tOV 0.000 – 60.000 s 0.001 5.000 Time delay to trip over voltage

COUVGAPC Group settings (advanced)

COUVGAPC Group settings (advanced)
Name Values (Range) Unit Step Default Description
HystAbs 0.0 – 50.0 %UB 0.1 0.5 Hysteresis absolute for compensated over/under voltage in % of UBase

COUVGAPC Non group settings (basic)

COUVGAPC Non group settings (basic)
Name Values (Range) Unit Step Default Description
GlobalBaseSel 1 – 12 – 1 1 Selection of one of the Global Base Value groups
R1 0.01 – 3000.00 Ohm 0.01 5.00 Positive sequence resistance per phase for the line in ohm
X1 0.01 – 3000.00 Ohm 0.01 40.00 Positive sequence reactance per phase for the line in ohm
Xc 1.00 – 10000.00 Ohm 0.01 1000.00 Half of equivalent capacitive reactance per phase in ohm
EnShuntReactor Off
On		 – – On Enable setting if shunt reactor connected in line
Xsh 1.00 – 10000.00 Ohm 0.01 1500.00 Per phase reactance of local Shunt Reactor in ohm

COUVGAPC Monitored data

COUVGAPC Monitored data
Name Type Values (Range) Unit Description
CMPUL1 REAL – kV Compensated voltage of phase 1
CMPUL2 REAL – kV Compensated voltage of phase 2
CMPUL3 REAL – kV Compensated voltage of phase 3

Logics & highlights

Vector diagram for local end and remote end voltage at no power transfer conditions

Vector diagram for local end and remote end voltage at no power transfer conditions

Breaker status configured with IED

Breaker status configured with IED

Logic diagram of Compensated over and undervoltage protection (COUVGAPC)

Logic diagram of Compensated over and undervoltage protection (COUVGAPC)

Calculations

Calculations
Technical data

COUVGAPC technical data

COUVGAPC technical data
18
Apr
AB2

Low active power and power factor protection (LAPPGAPC) for DTT _ Setting & highlights _ AB2109

Posted on by Firoozeh

Overview

The “Low active power and power factor protection” function measures power flow. It can be used for protection and monitoring of phase wise low active power, phase wise low power factor and phase wise reactive power and apparent power as service values.

For more detailed information on “Low active power and power factor protection” function, refer to ABB, Relion 670 Series manuals.

To see other supported functions, click here.

Function Identification

Function description IEC 61850
identification		 IEC 60617
identification		 ANSI/IEEE C37.2
device number
Low active power and power factor protection LAPPGAPC – 37_55

Signals & Setting Parameters

LAPPGAPC function block

LAPPGAPC function block

LAPPGAPC Input signals

LAPPGAPC Input signals
Name Type Default Description
I3P GROUP SIGNAL – Three phase group signal for current
U3P GROUP SIGNAL – Three phase group signal for voltage
BLOCK BOOLEAN 0 Block of function
BLKTR BOOLEAN 0 Block all trip signals of the funtction

LAPPGAPC Output signals

LAPPGAPC Output signals
Name Type Description
TRLAP BOOLEAN Trip low active power
TRLPF BOOLEAN Trip low power factor
TRLPFL1 BOOLEAN Trip low power factor phase 1
TRLPFL2 BOOLEAN Trip low power factor phase 2
TRLPFL3 BOOLEAN Trip low power factor phase 3
STLAP BOOLEAN Start low active power
STLPF BOOLEAN Start low power factor
STLAPL1 BOOLEAN Start low active power phase 1
STLAPL2 BOOLEAN Start low active power phase 2
STLAPL3 BOOLEAN Start low active power phase 3
STLPFL1 BOOLEAN Start low power factor phase 1
STLPFL2 BOOLEAN Start low power factor phase 2
STLPFL3 BOOLEAN Start low power factor phase 3

LAPPGAPC Group settings (basic)

LAPPGAPC Group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Off
On		 – – Off Operation Off/On
OperationLAP Off
On		 – – Off Operation low active power Off/On
OpMode 2 out of 3
1 out of 3		 – – 2 out of 3 Trip mode low active power 2out of 3 or 1 out of 3
LAP< 2.0 – 100.0 %SB 0.1 5.0 3 Phase start value for low active power in % of SBase
tOpLAP 0.000 – 60.000 s 0.001 0.010 Time delay to operate for low active power
OperationLPF Off
On		 – – Off Operation low power factor Off/On
LPF< 0.00 – 1.00 – 0.01 0.40 Start value for low power factor
tOpLPF 0.000 – 60.000 s 0.001 0.010 Time delay to operate for low power factor

LAPPGAPC Group settings (advanced)

LAPPGAPC Group settings (advanced)
Name Values (Range) Unit Step Default Description
UGenZeroDb 0.0 – 100.0 %UB 0.1 30.0 Zero point Clamping in % of UBase
IGenZeroDb 0.0 – 100.0 %IB 0.1 3.0 Zero point clamping in % of IBase

LAPPGAPC Non group settings (basic)

LAPPGAPC Non group settings (basic)
Name Values (Range) Unit Step Default Description
GlobalBaseSel 1 – 12 – 1 1 Selection of one of the Global Base Value groups

LAPPGAPC Monitored data

LAPPGAPC Monitored data
Name Type Values (Range) Unit Description
SL1 REAL – MVA Apparent power for phase 1
SL2 REAL – MVA Apparent power for phase 2
SL3 REAL – MVA Apparent power for phase 3
PL1 REAL – MW Active power for phase 1
PL2 REAL – MW Active power for phase 2
PL3 REAL – MW Active power for phase 3
QL1 REAL – MVAr Reactive power for phase 1
QL2 REAL – MVAr Reactive power for phase 2
QL3 REAL – MVAr Reactive power for phase 3
PFL1 REAL – – Power factor phase 1
PFL2 REAL – – Power factor phase 2
PFL3 REAL – – Power factor phase 3

Logics & highlights

Active power calculation

Active power calculation

Power factor calculation

Power factor calculation

Logic diagram of Low active power and low power factor protection (LAPPGAPC)

Logic diagram of Low active power and low power factor protection (LAPPGAPC)
Technical data

LAPPGAPC technical data

LAPPGAPC technical data
17
Apr
AB2

Analog inputs _Setting & highlights _ AB2142

Posted on by Firoozeh

Overview

“Analog inputs” (input channels) must be configured and set properly in order to get correct measurement results and correct protection operations. For power measuring, all directional and differential functions, the directions of the input currents must be defined in order to reflect the way the current transformers are installed/connected in the field ( primary and secondary connections ). Measuring and protection algorithms in the IED use primary system quantities. Setting values are in primary quantities as well and it is important to set the data about the connected current and voltage transformers properly.

For more detailed information on “Analog inputs”, refer to ABB, Relion 670 Series manuals.

To see other supported functions, click here.

Signals & Setting Parameters

TRM_12I Output signals

TRM_12I Output signals
Name Type Description
STATUS BOOLEAN Analogue input module status
CH1(I) STRING Analogue current input 1
CH2(I) STRING Analogue current input 2
CH3(I) STRING Analogue current input 3
CH4(I) STRING Analogue current input 4
CH5(I) STRING Analogue current input 5
CH6(I) STRING Analogue current input 6
CH7(I) STRING Analogue current input 7
CH8(I) STRING Analogue current input 8
CH9(I) STRING Analogue current input 9
CH10(I) STRING Analogue current input 10
CH11(I) STRING Analogue current input 11
CH12(I) STRING Analogue current input 12

TRM_6I_6U Output signals

TRM_6I_6U Output signals
Name Type Description
STATUS BOOLEAN Analogue input module status
CH1(I) STRING Analogue current input 1
CH2(I) STRING Analogue current input 2
CH3(I) STRING Analogue current input 3
CH4(I) STRING Analogue current input 4
CH5(I) STRING Analogue current input 5
CH6(I) STRING Analogue current input 6
CH7(U) STRING Analogue voltage input 7
CH8(U) STRING Analogue voltage input 8
CH9(U) STRING Analogue voltage input 9
CH10(U) STRING Analogue voltage input 10
CH11(U) STRING Analogue voltage input 11
CH12(U) STRING Analogue voltage input 12

TRM_6I Output signals

TRM_6I Output signals
Name Type Description
STATUS BOOLEAN Analogue input module status
CH1(I) STRING Analogue current input 1
CH2(I) STRING Analogue current input 2
CH3(I) STRING Analogue current input 3
CH4(I) STRING Analogue current input 4
CH5(I) STRING Analogue current input 5
CH6(I) STRING Analogue current input 6

TRM_7I_5U Output signals

TRM_7I_5U Output signals
Name Type Description
STATUS BOOLEAN Analogue input module status
CH1(I) STRING Analogue current input 1
CH2(I) STRING Analogue current input 2
CH3(I) STRING Analogue current input 3
CH4(I) STRING Analogue current input 4
CH5(I) STRING Analogue current input 5
CH6(I) STRING Analogue current input 6
CH7(I) STRING Analogue current input 7
CH8(U) STRING Analogue voltage input 8
CH9(U) STRING Analogue voltage input 9
CH10(U) STRING Analogue voltage input 10
CH11(U) STRING Analogue voltage input 11
CH12(U) STRING Analogue voltage input 12

TRM_9I_3U Output signals

TRM_9I_3U Output signals
Name Type Description
STATUS BOOLEAN Analogue input module status
CH1(I) STRING Analogue current input 1
CH2(I) STRING Analogue current input 2
CH3(I) STRING Analogue current input 3
CH4(I) STRING Analogue current input 4
CH5(I) STRING Analogue current input 5
CH6(I) STRING Analogue current input 6
CH7(I) STRING Analogue current input 7
CH8(I) STRING Analogue current input 8
CH9(I) STRING Analogue current input 9
CH10(U) STRING Analogue voltage input 10
CH11(U) STRING Analogue voltage input 11
CH12(U) STRING Analogue voltage input 12

TRM_10I_2U Output signals

TRM_10I_2U Output signals
Name Type Description
STATUS BOOLEAN Analogue input module status
CH1(I) STRING Analogue current input 1
CH2(I) STRING Analogue current input 2
CH3(I) STRING Analogue current input 3
CH4(I) STRING Analogue current input 4
CH5(I) STRING Analogue current input 5
CH6(I) STRING Analogue current input 6
CH7(I) STRING Analogue current input 7
CH8(I) STRING Analogue current input 8
CH9(I) STRING Analogue current input 9
CH10(I) STRING Analogue current input 10
CH11(U) STRING Analogue voltage input 11
CH12(U) STRING Analogue voltage input 12

AISVBAS Non group settings (basic)

AISVBAS Non group settings (basic)
Name Values (Range) Unit Step Default Description
PhaseAngleRef TRM40-Ch1 – Ch12
TRM41-Ch1 – Ch12
MU1-L1I – L4I
MU1-L1U – L4U
MU2-L1I – L4I
MU2-L1U – L4U
MU3-L1I – L4I
MU3-L1U – L4U
MU4-L1I – L4I
MU4-L1U – L4U
MU5-L1I – L4I
MU5-L1U – L4U
MU6-L1I – L4I
MU6-L1U – L4U
MU7-L1I – L4I
MU7-L1U – L4U
MU8-L1I – L4I
MU8-L1U – L4U
MU9-L1I – L4I
MU9-L1U – L4U
MU10-L1I – L4I
MU10-L1U – L4U
MU11-L1I – L4I
MU11-L1U – L4U
MU12-L1I – L4I
MU12-L1U – L4U		 – – TRM40-Ch1 Reference channel for phase angle presentation

TRM_12I Non group settings (basic)

TRM_12I Non group settings (basic)
Name Values (Range) Unit Step Default Description
CTStarPoint1 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec1 1 – 10 A 1 1 Rated CT secondary current
CTprim1 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint2 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec2 1 – 10 A 1 1 Rated CT secondary current
CTprim2 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint3 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec3 1 – 10 A 1 1 Rated CT secondary current
CTprim3 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint4 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec4 1 – 10 A 1 1 Rated CT secondary current
CTprim4 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint5 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec5 1 – 10 A 1 1 Rated CT secondary current
CTprim5 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint6 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec6 1 – 10 A 1 1 Rated CT secondary current
CTprim6 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint7 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec7 1 – 10 A 1 1 Rated CT secondary current
CTprim7 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint8 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec8 1 – 10 A 1 1 Rated CT secondary current
CTprim8 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint9 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec9 1 – 10 A 1 1 Rated CT secondary current
CTprim9 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint10 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec10 1 – 10 A 1 1 Rated CT secondary current
CTprim10 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint11 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec11 1 – 10 A 1 1 Rated CT secondary current
CTprim11 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint12 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec12 1 – 10 A 1 1 Rated CT secondary current
CTprim12 1 – 99999 A 1 3000 Rated CT primary current

TRM_6I_6U Non group settings (basic)

TRM_6I_6U Non group settings (basic)
Name Values (Range) Unit Step Default Description
CTStarPoint1 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec1 1 – 10 A 1 1 Rated CT secondary current
CTprim1 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint2 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec2 1 – 10 A 1 1 Rated CT secondary current
CTprim2 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint3 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec3 1 – 10 A 1 1 Rated CT secondary current
CTprim3 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint4 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec4 1 – 10 A 1 1 Rated CT secondary current
CTprim4 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint5 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec5 1 – 10 A 1 1 Rated CT secondary current
CTprim5 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint6 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec6 1 – 10 A 1 1 Rated CT secondary current
CTprim6 1 – 99999 A 1 3000 Rated CT primary current
VTsec7 0.001 – 999.999 V 0.001 110.000 Rated VT secondary voltage
VTprim7 0.05 – 2000.00 kV 0.05 400.00 Rated VT primary voltage
VTsec8 0.001 – 999.999 V 0.001 110.000 Rated VT secondary voltage
VTprim8 0.05 – 2000.00 kV 0.05 400.00 Rated VT primary voltage
VTsec9 0.001 – 999.999 V 0.001 110.000 Rated VT secondary voltage
VTprim9 0.05 – 2000.00 kV 0.05 400.00 Rated VT primary voltage
VTsec10 0.001 – 999.999 V 0.001 110.000 Rated VT secondary voltage
VTprim10 0.05 – 2000.00 kV 0.05 400.00 Rated VT primary voltage
VTsec11 0.001 – 999.999 V 0.001 110.000 Rated VT secondary voltage
VTprim11 0.05 – 2000.00 kV 0.05 400.00 Rated VT primary voltage
VTsec12 0.001 – 999.999 V 0.001 110.000 Rated VT secondary voltage
VTprim12 0.05 – 2000.00 kV 0.05 400.00 Rated VT primary voltage

TRM_6I Non group settings (basic)

TRM_6I Non group settings (basic)
Name Values (Range) Unit Step Default Description
CTStarPoint1 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec1 1 – 10 A 1 1 Rated CT secondary current
CTprim1 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint2 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec2 1 – 10 A 1 1 Rated CT secondary current
CTprim2 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint3 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec3 1 – 10 A 1 1 Rated CT secondary current
CTprim3 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint4 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec4 1 – 10 A 1 1 Rated CT secondary current
CTprim4 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint5 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec5 1 – 10 A 1 1 Rated CT secondary current
CTprim5 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint6 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec6 1 – 10 A 1 1 Rated CT secondary current
CTprim6 1 – 99999 A 1 3000 Rated CT primary current

TRM_7I_5U Non group settings (basic)

TRM_7I_5U Non group settings (basic)
Name Values (Range) Unit Step Default Description
CTStarPoint1 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec1 1 – 10 A 1 1 Rated CT secondary current
CTprim1 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint2 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec2 1 – 10 A 1 1 Rated CT secondary current
CTprim2 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint3 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec3 1 – 10 A 1 1 Rated CT secondary current
CTprim3 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint4 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec4 1 – 10 A 1 1 Rated CT secondary current
CTprim4 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint5 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec5 1 – 10 A 1 1 Rated CT secondary current
CTprim5 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint6 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec6 1 – 10 A 1 1 Rated CT secondary current
CTprim6 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint7 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec7 1 – 10 A 1 1 Rated CT secondary current
CTprim7 1 – 99999 A 1 3000 Rated CT primary current
VTsec8 0.001 – 999.999 V 0.001 110.000 Rated VT secondary voltage
VTprim8 0.05 – 2000.00 kV 0.05 400.00 Rated VT primary voltage
VTsec9 0.001 – 999.999 V 0.001 110.000 Rated VT secondary voltage
VTprim9 0.05 – 2000.00 kV 0.05 400.00 Rated VT primary voltage
VTsec10 0.001 – 999.999 V 0.001 110.000 Rated VT secondary voltage
VTprim10 0.05 – 2000.00 kV 0.05 400.00 Rated VT primary voltage
VTsec11 0.001 – 999.999 V 0.001 110.000 Rated VT secondary voltage
VTprim11 0.05 – 2000.00 kV 0.05 400.00 Rated VT primary voltage
VTsec12 0.001 – 999.999 V 0.001 110.000 Rated VT secondary voltage
VTprim12 0.05 – 2000.00 kV 0.05 400.00 Rated VT primary voltage

TRM_9I_3U Non group settings (basic)

TRM_9I_3U Non group settings (basic)
Name Values (Range) Unit Step Default Description
CTStarPoint1 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec1 1 – 10 A 1 1 Rated CT secondary current
CTprim1 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint2 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec2 1 – 10 A 1 1 Rated CT secondary current
CTprim2 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint3 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec3 1 – 10 A 1 1 Rated CT secondary current
CTprim3 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint4 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec4 1 – 10 A 1 1 Rated CT secondary current
CTprim4 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint5 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec5 1 – 10 A 1 1 Rated CT secondary current
CTprim5 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint6 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec6 1 – 10 A 1 1 Rated CT secondary current
CTprim6 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint7 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec7 1 – 10 A 1 1 Rated CT secondary current
CTprim7 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint8 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec8 1 – 10 A 1 1 Rated CT secondary current
CTprim8 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint9 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec9 1 – 10 A 1 1 Rated CT secondary current
CTprim9 1 – 99999 A 1 3000 Rated CT primary current
VTsec10 0.001 – 999.999 V 0.001 110.000 Rated VT secondary voltage
VTprim10 0.05 – 2000.00 kV 0.05 400.00 Rated VT primary voltage
VTsec11 0.001 – 999.999 V 0.001 110.000 Rated VT secondary voltage
VTprim11 0.05 – 2000.00 kV 0.05 400.00 Rated VT primary voltage
VTsec12 0.001 – 999.999 V 0.001 110.000 Rated VT secondary voltage
VTprim12 0.05 – 2000.00 kV 0.05 400.00 Rated VT primary voltage

TRM_10I_2U Non group settings (basic)

TRM_10I_2U Non group settings (basic)
Name Values (Range) Unit Step Default Description
CTStarPoint1 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec1 1 – 10 A 1 1 Rated CT secondary current
CTprim1 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint2 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec2 1 – 10 A 1 1 Rated CT secondary current
CTprim2 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint3 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec3 1 – 10 A 1 1 Rated CT secondary current
CTprim3 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint4 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec4 1 – 10 A 1 1 Rated CT secondary current
CTprim4 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint5 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec5 1 – 10 A 1 1 Rated CT secondary current
CTprim5 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint6 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec6 1 – 10 A 1 1 Rated CT secondary current
CTprim6 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint7 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec7 1 – 10 A 1 1 Rated CT secondary current
CTprim7 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint8 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec8 1 – 10 A 1 1 Rated CT secondary current
CTprim8 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint9 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec9 1 – 10 A 1 1 Rated CT secondary current
CTprim9 1 – 99999 A 1 3000 Rated CT primary current
CTStarPoint10 FromObject
ToObject		 – – ToObject ToObject= towards protected object, FromObject= the opposite
CTsec10 1 – 10 A 1 1 Rated CT secondary current
CTprim10 1 – 99999 A 1 3000 Rated CT primary current
VTsec11 0.001 – 999.999 V 0.001 110.000 Rated VT secondary voltage
VTprim11 0.05 – 2000.00 kV 0.05 400.00 Rated VT primary voltage
VTsec12 0.001 – 999.999 V 0.001 110.000 Rated VT secondary voltage
VTprim12 0.05 – 2000.00 kV 0.05 400.00 Rated VT primary voltage

AISVBAS Monitored data

AISVBAS Monitored data
Name Type Values (Range) Unit Description
Status INTEGER 0=Ok
1=Error
2=AngRefLow
3=Uncorrelated		 – Service value status

TRM_12I Monitored data

TRM_12I Monitored data
Name Type Values (Range) Unit Description
STATUS BOOLEAN 0=Ok
1=Error		 – Analogue input module status

TRM_6I_6U Monitored data

TRM_6I_6U Monitored data
Name Type Values (Range) Unit Description
STATUS BOOLEAN 0=Ok
1=Error		 – Analogue input module status

TRM_6I Monitored data

TRM_6I Monitored data
Name Type Values (Range) Unit Description
STATUS BOOLEAN 0=Ok
1=Error		 – Analogue input module status

TRM_7I_5U Monitored data

TRM_7I_5U Monitored data
Name Type Values (Range) Unit Description
STATUS BOOLEAN 0=Ok
1=Error		 – Analogue input module status

TRM_9I_3U Monitored data

TRM_9I_3U Monitored data
Name Type Values (Range) Unit Description
STATUS BOOLEAN 0=Ok
1=Error		 – Analogue input module status

TRM_10I_2U Monitored data

TRM_10I_2U Monitored data
Name Type Values (Range) Unit Description
STATUS BOOLEAN 0=Ok
1=Error		 – Analogue input module status

highlights

Current channels

Internal convention of the directionality in the IED

Internal convention of the directionality in the IED

Example how to set CTStarPoint parameters in the IED

Example how to set CTStarPoint parameters in the IED

Example how to set CTStarPoint parameters in the IED

Example how to set CTStarPoint parameters in the IED

Example how to set CTStarPoint parameters in the IED

Example how to set CTStarPoint parameters in the IED

Example how to set CTStarPoint parameters in the IED

Example how to set CTStarPoint parameters in the IED

Example how to set CTStarPoint parameters in the IED

Example how to set CTStarPoint parameters in the IED

Commonly used markings of CT terminals

Commonly used markings of CT terminals

Star connected three-phase CT set with star point towards the protected object

Star connected three-phase CT set with star point towards the protected object

Star connected three-phase CT set with its star point away from the protected object

Star connected three-phase CT set with its star point away from the protected object

Star connected three-phase CT set with its star point away from the protected object and the residual/neutral current connected to the IED

Star connected three-phase CT set with its star point away from the protected object and the residual/neutral current connected to the IED

Delta DAB connected three-phase CT set

Delta DAB connected three-phase CT set

Delta DAC connected three-phase CT set

Delta DAC connected three-phase CT set

Connections for single-phase CT input

Connections for single-phase CT input

Voltage channels

Commonly used markings of VT terminals

Commonly used markings of VT terminals

A Three phase-to-earth connected VT

A Three phase-to-earth connected VT

A two phase-to-earth connected VT

A two phase-to-earth connected VT

A Two phase-to-phase connected VT

A Two phase-to-phase connected VT

Open delta connected VT in high impedance earthed power system

Open delta connected VT in high impedance earthed power system

Open delta connected VT in low impedance or solidly earthed power system

Open delta connected VT in low impedance or solidly earthed power system

Neutral point connected VT

Neutral point connected VT

Technical Data

TRM – Energizing quantities, rated values and limits for protection transformer

TRM - Energizing quantities, rated values and limits for protection transformer

TRM – Energizing quantities, rated values and limits for measuring transformer

TRM - Energizing quantities, rated values and limits for measuring transformer

CT and VT circuit connectors

CT and VT circuit connectors
17
Apr
AB2

Frequency time accumulation protection (FTAQFVR) _ Setting & highlights _ AB2140

Posted on by Firoozeh

Overview

The “Frequency time accumulation protection” for generator protection provides the START output for a particular settable frequency limit, when the system frequency falls in that settable frequency band limit and positive sequence voltage within settable voltage band limit. The START signal triggers the individual event timer, which is the continuous time spent within the given frequency band, and the accumulation timer, which is the cumulative time spent within the given frequency band.

For more detailed information on “Frequency time accumulation protection” function, refer to ABB, Relion 670 Series manuals.

To see other supported functions, click here.

Function Identification

FTAQFVR Monitored data
Name Type Values (Range) Unit Description
FREQ REAL – Hz Measured frequency value
ACCTIME REAL – s Accumulated time for frequency band limits

Signals & Setting Parameters

FTAQFVR function block

FTAQFVR function block

FTAQFVR Input signals

FTAQFVR Input signals
Name Type Default Description
I3P GROUP SIGNAL – Group signal for three phase current
U3P GROUP SIGNAL – Group signal for three phase voltage
BLOCK BOOLEAN 0 Block of function
CBCLOSE BOOLEAN 0 Circuit breaker closed status input
CBOPEN BOOLEAN 0 Circuit breaker open status input
LOADINIT BOOLEAN 0 Loads the initial accumulation time to the function
HOLDACC BOOLEAN 0 Holds the time accumulation when input is activated
RESETACC BOOLEAN 0 Resetting the accumulated time of the function block

FTAQFVR Output signals

FTAQFVR Output signals
Name Type Description
ERROR BOOLEAN Error output for incorrect settings
TRIP BOOLEAN Trip signal of the function
TRIPACC BOOLEAN Trip signal when accumulation time is exceeded the set limit
TRIPCONT BOOLEAN Trip signal when continuous time is exceeded the set limit
START BOOLEAN Start signal of the function
ACCALARM BOOLEAN Alarm signal for reaching the frequency time accumulation value
STRORHLD BOOLEAN Activated when function starts or HOLDACC input is active
FREQOK BOOLEAN Indicates the system frequency within the frequency band limits
VOLTOK BOOLEAN Indicates the system voltage within the voltage band limits

FTAQFVR Group settings (basic)

FTAQFVR Group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Off
On		 – – Off Operation Off / On
tContinuous 0.0 – 6000.0 s 0.1 20.0 Continuous time limit for frequency band limits
tAccLimit 10.0 – 90000.0 s 0.1 600.0 Accumulation time limit for frequency band limits
FreqHighLimit 35.00 – 90.00 Hz 0.01 47.50 Frequency High limit value
FreqLowLimit 30.00 – 85.00 Hz 0.01 47.00 Frequency Low limit value
CBCheck Disable
Enable		 – – Enable Enabling the generator start or stop detection logic
CurrStartLevel 5.0 – 100.0 %IB 0.1 10.0 Threshold current value of generator in percentage of base current
EnaVoltCheck Disable
Enable		 – – Enable Enabling the voltage band limit check
UHighLimit 0.0 – 200.0 %UB 1.0 200.0 Voltage high limit for voltage band limit check
ULowLimit 0.0 – 200.0 %UB 1.0 0.0 Voltage low limit for voltage band limit check

FTAQFVR Non group settings (basic)

FTAQFVR Non group settings (basic)
Name Values (Range) Unit Step Default Description
GlobalBaseSel 1 – 12 – 1 1 Selection of one of the Global Base Value groups
initTimeAcc 0.000 – 90000.000 s 0.001 0.0 Initial accumulated time when LOADINIT command is executed

FTAQFVR Monitored data

FTAQFVR Monitored data
Name Type Values (Range) Unit Description
FREQ REAL – Hz Measured frequency value
ACCTIME REAL – s Accumulated time for frequency band limits

Logics & highlights

Typical stress magnification factor curve according ANSI/IEEE C37.106-2003 Standard

Typical stress magnification factor curve according ANSI/IEEE C37.106-2003 Standard

Examples of time frequency characteristics with various frequency band limits

Examples of time frequency characteristics with various frequency band limits

Logical diagram

Logical diagram

Technical data

17
Apr
AB2

100% Stator earth fault protection, 3rd harmonic based (STEFPHIZ) _ Setting & highlights _ AB2139

Posted on by Firoozeh

Overview

By the “100% Stator earth fault protection, 3rd harmonic based” either the 3rd harmonic voltage differential principle, the neutral point 3rd harmonic undervoltage principle or the terminal side 3rd harmonic overvoltage principle can be applied. However, differential principle is strongly recommended. Combination of these two measuring principles provides coverage for entire stator winding against earth faults.

For more detailed information on “100% Stator earth fault protection, 3rd harmonic based” function, refer to ABB, Relion 670 Series manuals.

To see other supported functions, click here.

Function Identification

Function description IEC 61850
identification		 IEC 60617
identification		 ANSI/IEEE C37.2
device number
100% Stator earth fault protection, 3rd harmonic based STEFPHIZ   59THD

Signals & Setting Parameters

STEFPHIZ function block

STEFPHIZ function block

STEFPHIZ Input signals

STEFPHIZ Input signals
Name Type Default Description
U3PNEUT GROUP SIGNAL – Voltage connection neutral side
U3PTERM GROUP SIGNAL – Open-Delta connection on Terminal side
BLOCK BOOLEAN 0 Complete block of the stator earth fault protecion function
BLOCK3RD BOOLEAN 0 Block of the 3rd harmonic-based parts of the protection
BLOCKUN BOOLEAN 0 Block of the fund. harmonic-based part of the protection
CBCLOSED BOOLEAN 1 TRUE means breaker between gen. & trafo is closed

STEFPHIZ Output signals

STEFPHIZ Output signals
Name Type Description
TRIP BOOLEAN Main, common trip command
TRIP3H BOOLEAN Trip by one of two 3rd harmonic voltage-based prot.
TRIPUN BOOLEAN Trip by fund. freq. neutral over-voltage protection
START BOOLEAN Main, common start signal
START3H BOOLEAN Start by one of two 3rd harmonic voltage-based prot.
STARTUN BOOLEAN Start signal by fund. freq. neutral over-voltage prot.
UT3 REAL Mag. of 3rd harm. voltage at generator terminal side, Volts
UN3 REAL Mag. of 3rd harm. voltage at generator neutral side, Volts
E3 REAL Total induced stator 3rd harmonic voltage, primary Volts
ANGLE REAL Angle between 3rd harmonic votage phasors, radians
DU3 REAL Diff. between 3rd harm. volt. at both sides of gen., Volts
BU3 REAL Bias voltage, a part of voltN3rdHarmonic, primary Volts
UN REAL Fund. frequency voltage at generator neutral, primary Volts

STEFPHIZ Group settings (basic)

STEFPHIZ Group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Off
On		 – – Off Operation Off / On
Beta 0.50 – 10.00 – 0.01 3.00 Portion of voltN3rdHarmonic used as bias
CBexists No Yes – – No Defines if generator CB exists (between Gen & Transformer)
FactorCBopen 1.00 – 10.00 – 0.01 1.00 Beta is multiplied by this factor when CB is open
UN3rdH< 0.5 – 10.0 %UB 0.1 2.0 Pickup 3rd Harm U< protection (when activated) % of UB/1,732
UT3BlkLevel 0.1 – 10.0 %UB 0.1 1.0 If UT3 is below limit 3rdH Diff is blocked, in % of UB/1,732
UNFund> 1.0 – 50.0 %UB 0.1 5.0 Pickup fundamental UN> protection (95% SEF), % of UB/1,732
t3rdH 0.020 – 60.000 s 0.001 1.000 Operation delay of 3rd harm-based protection (100% SEF) in s
tUNFund 0.020 – 60.000 s 0.001 0.500 Operation delay of fundamental UN> protection (95% SEF) in s

STEFPHIZ Non group settings (basic)

STEFPHIZ Non group settings (basic)
Name Values (Range) Unit Step Default Description
TVoltType NoVoltage
ResidualVoltage
AllThreePhases
PhaseL1
PhaseL2
PhaseL3		 – – ResidualVoltage Used connection type for gen. terminal voltage transformer
GlobalBaseSel 1 – 12 – 1 1 Selection of one of the Global Base Value groups

STEFPHIZ Monitored data

STEFPHIZ Monitored data
Name Type Values (Range) Unit Description
UT3 REAL – kV Mag. of 3rd harm. voltage at generator terminal side, Volts
UN3 REAL – kV Mag. of 3rd harm. voltage at generator neutral side, Volts
E3 REAL – kV Total induced stator 3rd harmonic voltage, primary Volts
ANGLE REAL – deg Angle between 3rd harmonic votage phasors, radians
DU3 REAL – kV Diff. between 3rd harm. volt. at both sides of gen., Volts
BU3 REAL – kV Bias voltage, a part of voltN3rdHarmonic, primary Volts
UN REAL – kV Fund. frequency voltage at generator neutral, primary Volts

Logics & highlights

Protection principles for STEFPHIZ function

Protection principles for STEFPHIZ function

Relation between the amplitude of the generator earth fault current and the fault time

Relation between the amplitude of the generator earth fault current and the fault time

Broken delta voltage transformer measurement of 3U0 voltage

Broken delta voltage transformer measurement of 3U0 voltage

Neutral point voltage transformer measurement of neutral point voltage (that is U0 voltage)

Neutral point voltage transformer measurement of neutral point voltage (that is U0 voltage)

Neutral point current measurement

Neutral point current measurement

Residual current measurement

Residual current measurement

Generator 3rd harmonic voltage characteristic at normal operation & protection algorithm

Generator 3rd harmonic voltage characteristic at normal operation & protection algorithm

Simplified logic diagram for stator earth fault protection

Simplified logic diagram for stator earth fault protection

Simplified Start and Trip logical diagram of the 100% Stator earth fault protection, 3rd harmonic based STEFPHIZ protection

Simplified Start and Trip logical diagram of the 100% Stator earth fault protection, 3rd harmonic based STEFPHIZ protection

Generator block with generator circuit breaker

Generator block with generator circuit breaker

Technical data

Technical data
17
Apr
AB2

Voltage unbalance protection of shunt capacitor bank (SCUVPTOV) _ Setting & highlights _ AB2138

Posted on by Firoozeh

Overview

The “Voltage unbalance protection of shunt capacitor bank” function uses the neutral voltage measurement of an ungrounded single or double WYE configuration of SCB. The protection arrangements are based on the terminal voltage limit and the current limit of the capacitor units.

For more detailed information on “Voltage unbalance protection of shunt capacitor bank” function, refer to ABB, Relion 670 Series manuals.

To see other supported functions, click here.

Function Identification

Function description IEC 61850
identification		 IEC 60617
identification		 ANSI/IEEE C37.2
device number
Voltage unbalance protection of the shunt capacitor bank SCUVPTOV Uub > 60V

Signals & Setting Parameters

SCUVPTOV function block

SCUVPTOV function block

SCUVPTOV Input signals

SCUVPTOV Input signals
Name Type Default Description
U3P GROUP SIGNAL – Group signal for three phase bus voltage
U3NEUT GROUP SIGNAL – Group signal for capacitor bank neutral voltage
BLOCK BOOLEAN 0 Block of function
BLKTR BOOLEAN 0 Block of trip
BLKALM BOOLEAN 0 Block of alarm
BLKWRN BOOLEAN 0 Block of warning
INHIBIT BOOLEAN 0 Inhibit the function
TRIGCOMP BOOLEAN 0 Trigger input to store the calculated compensation factors into the IED memory. The stored values will be used for future compensation in the function.
RESETCOMP BOOLEAN 0 Force the stored compensation factors to zero.

SCUVPTOV Output signals

SCUVPTOV Output signals
Name Type Description
TRIP BOOLEAN Trip signal
START BOOLEAN Start signal
ALARM BOOLEAN Alarm signal
WARNING BOOLEAN Warning signal
BLKD BOOLEAN Block due to bus voltage in any phase is lower than the set UMin> value or SCB disconnection is detected
COMPEXED BOOLEAN Indicates that a trigger was made for compensation
PUNUNBAL REAL Capacitor bank neutral unbalance voltage in % of UBase

SCUVPTOV Non group settings (basic)

SCUVPTOV Non group settings (basic)
Name Values (Range) Unit Step Default Description
GlobalBaseSel 1 – 12 – 1 1 Selection of one of the Global Base Value groups

SCUVPTOV Group settings (basic)

SCUVPTOV Group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Off
On		 – – Off Operation Off / On
UMin> 5.0 – 100.0 %UB 0.1 75.0 Minimum bus voltage for operation in
% of UBase
CompEnable Disable
Enable		 – – Enable Selection of neutral voltage unbalance compensation
UNUnbalWrn> 1.0 – 95.0 %UB 0.1 1.0 Neutral voltage unbalance warning level in % of UBase
tDefWrn 0.00 – 60.00 s 0.01 5.00 Definite time delay to warning
UNUnbalAlm> 1.0 – 95.0 %UB 0.1 2.5 Neutral voltage unbalance alarm level in % of UBase
tDefAlm 0.00 – 60.00 s 0.01 5.00 Definite time delay to alarm
UNUnbal> 1.0 – 95.0 %UB 0.1 5.5 Neutral voltage unbalance trip level in
% of UBase
CurveType Definite time
Programmable		 – – Definite time Selection of time delay curve type for trip
tDefTrip 0.00 – 60.00 s 0.01 5.00 Definite time delay for trip
k 0.05 – 15.00 – 0.01 0.05 Time multiplier for programmable curve for trip
tMin 0.00 – 60.00 s 0.01 0.10 Minimum operate time for programmable curve for trip
tReset 0.00 – 60.00 s 0.01 0.02 Reset time delay for warning, alarm and trip
tPCrv 0.000 – 3.000 – 0.001 1.000 Parameter P for programmable curve for trip
tACrv 0.005 – 200.000 – 0.001 1.000 Parameter A for programmable curve for trip
tBCrv 0.50 – 100.00 – 0.01 1.00 Parameter B for programmable curve for trip
tCCrv 0.0 – 1.0 – 0.1 0.0 Parameter C for programmable curve for trip
tDCrv 0.000 – 60.000 – 0.001 0.000 Parameter D for programmable curve for trip
CrvSat 0 – 100 – 1 0 Tuning parameter for programmable curve

SCUVPTOV Non group settings (advanced)

SCUVPTOV Non group settings (advanced)
Name Values (Range) Unit Step Default Description
BlockTrip Trip disabled
Trip enabled		 – – Trip enabled Trip blocked / enabled

SCUVPTOV Monitored data

SCUVPTOV Monitored data
Name Type Values (Range) Unit Description
LASTCOMP GROUP SIGNAL – – Indicates date and time when the last trigger was made for compensation
UNUNBAL REAL – kV Instantaneous magnitude of capacitor bank neutral unbalance voltage
PUNUNBAL REAL – % Capacitor bank neutral unbalance voltage in % of UBase
UL1 REAL – kV Bus voltage of phase L1
UL2 REAL – kV Bus voltage of phase L2
UL3 REAL – kV Bus voltage of phase L3
UNSCB REAL – kV Capacitor bank neutral voltage
K1USED REAL – – Used compensation factor of K1 for unbalance neutral voltage calculation
K2USED REAL – – Used compensation factor of K2 for unbalance neutral voltage calculation
K1MON REAL – – Monitored compensation factor of K1 for unbalance neutral voltage calculation
K2MON REAL – – Monitored compensation factor of K2 for unbalance neutral voltage calculation

Technical data

Technical data

Logics & highlights

Protection scheme for ungrounded double WYE capacitor bank

Protection scheme for ungrounded double WYE capacitor bank

Single line diagram for an ungrounded double WYE capacitor bank

Single line diagram for an ungrounded double WYE capacitor bank

Units arrangement in an ungrounded double WYE connected capacitor bank

Units arrangement in an ungrounded double WYE connected capacitor bank

Single line diagram for an ungrounded single WYE capacitor bank

Single line diagram for an ungrounded single WYE capacitor bank

Units arrangement in an ungrounded single WYE connected capacitor bank

Units arrangement in an ungrounded single WYE connected capacitor bank

Ungrounded single WYE SCB connected to function block

Ungrounded single WYE SCB connected to function block

Programmable curve

Programmable curve

SCUVPTOV block diagram

SCUVPTOV block diagram

Simplified Warning, Alarm, and Trip logic

Simplified Warning, Alarm, and Trip logic

Reporting over IEC 61850

Reporting over IEC 61850

14
Apr
AB2

Phase voltage differential based capacitor bank unbalanced protection (SCPDPTOV) _ Setting & highlights _ AB2137

Posted on by Firoozeh

Overview

Any internal fault in the capacitor bank leads to unbalance in the shunt capacitor banks (SCB) and severe damage to the entire bank, which can result in an explosion or fire. In the shunt capacitor bank, the internal faults are due to open-circuit or short circuit of the capacitor units or elements. The “Phase voltage differential based capacitor bank unbalanced protection” can detect the voltage unbalance in the capacitor bank. It can be applied to grounded and ungrounded capacitor bank configurations, where the three-phase bus and tap voltage measurements are available.

For more detailed information on “Phase voltage differential based capacitor bank unbalanced protection” function, refer to ABB, Relion 670 Series manuals.

To see other supported functions, click here.

Function Identification

Function description IEC 61850
identification		 IEC 60617
identification		 ANSI/IEEE C37.2
device number
Phase voltage differential based capacitor bank unbalanced protection SCPDPTOV Ud > 87V

Signals & Setting Parameters

SCPDPTOV function block

SCPDPTOV function block

SCPDPTOV Input signals

SCPDPTOV Input signals
Name Type Default Description
U3P GROUP SIGNAL – Group signal for three phase bus voltage
U3PTAP GROUP SIGNAL – Group signal for three phase tap voltage
U3NEUT GROUP SIGNAL – Group signal for capacitor bank neutral voltage
BLOCK BOOLEAN 0 Block of function
BLKTR BOOLEAN 0 Block of trip
BLKALM BOOLEAN 0 Block of alarm
BLKWRN BOOLEAN 0 Block of warning
INHIBIT BOOLEAN 0 Inhibit the function
TRIGCOMP BOOLEAN 0 Trigger input to store the voltage ratios into the IED memory. The stored values will be used for future compensation in the function.
RESETCOMP BOOLEAN 0 Reset the stored voltage ratios to set voltage ratio value

SCPDPTOV Output signals

SCPDPTOV Output signals
Name Type Description
TRIP BOOLEAN General trip signal
TRL1 BOOLEAN Trip signal from phase L1
TRL2 BOOLEAN Trip signal from phase L2
TRL3 BOOLEAN Trip signal from phase L3
START BOOLEAN General start signal
STL1 BOOLEAN Start signal from phase L1
STL2 BOOLEAN Start signal from phase L2
STL3 BOOLEAN Start signal from phase L3
ALARM BOOLEAN General alarm signal
ALML1 BOOLEAN Alarm signal from phase L1
ALML2 BOOLEAN Alarm signal from phase L2
ALML3 BOOLEAN Alarm signal from phase L3
WARNING BOOLEAN General warning signal
WRNL1 BOOLEAN Warning signal from phase L1
WRNL2 BOOLEAN Warning signal from phase L2
WRNL3 BOOLEAN Warning signal from phase L3
BLKDL1 BOOLEAN Function operation blocked due to bus voltage in phase L1 or all three phase equivalent tap voltages going below UMin>
BLKDL2 BOOLEAN Function operation blocked due to bus voltage in phase L2 or all three phase equivalent tap voltages going below UMin>
BLKDL3 BOOLEAN Function operation blocked due to bus voltage in phase L3 or all three phase equivalent tap voltages going below UMin>
DIFURATL1 BOOLEAN Alarm when deviation between the calculated and the set voltage ratio for phase L1 is larger than the set threshold limit for percentage variation (URatioVar>)
DIFURATL2 BOOLEAN Alarm when deviation between the calculated and the set voltage ratio for phase L2 is larger than the set threshold limit for percentage variation (URatioVar>)
DIFURATL3 BOOLEAN Alarm when deviation between the calculated and the set voltage ratio for phase L3 is larger than the set threshold limit for percentage variation (URatioVar>)
COMPEXED BOOLEAN Indicates that a trigger was made for compensation
PUDIFL1 REAL Differential voltage magnitude of phase L1 in % of UBase
PUDIFL2 REAL Differential voltage magnitude of phase L2 in % of UBase
PUDIFL3 REAL Differential voltage magnitude of phase L3 in % of UBase
USEDURATL1 REAL Magnitude of ratio between tap and bus voltages stored and used for calculation of differential voltage of phase L1
USEDURATL2 REAL Magnitude of ratio between tap and bus voltages stored and used for calculation of differential voltage of phase L2
USEDURATL3 REAL Magnitude of ratio between tap and bus voltages stored and used for calculation of differential voltage of phase L3
URATIOL1 REAL Magnitude of ratio between tap and bus voltages of phase L1
URATIOL2 REAL Magnitude of ratio between tap and bus voltages of phase L2
URATIOL3 REAL Magnitude of ratio between tap and bus voltages of phase L3

SCPDPTOV Non group settings (basic)

SCPDPTOV Non group settings (basic)
Name Values (Range) Unit Step Default Description
SCBGndType Grounded
Ungrounded		 – – Grounded Selection of shunt capacitor bank ground type
NeutVoltMeas Not available
Available		 – – Available Selection of shunt capacitor bank neutral voltage VT availability
GlobalBaseSel 1 – 12 – 1 1 Selection of one of the Global Base Value groups
VoltRatioL1 0.010 – 0.950 – 0.001 0.500 Voltage ratio of tap voltage to bus voltage for phase L1
VoltRatioL2 0.010 – 0.950 – 0.001 0.500 Voltage ratio of tap voltage to bus voltage for phase L2
VoltRatioL3 0.010 – 0.950 – 0.001 0.500 Voltage ratio of tap voltage to bus voltage for phase L3

SCPDPTOV Group settings (basic)

SCPDPTOV Group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Off
On		 – – Off Operation Off / On
URatioVar> 5 – 300 % 1 10 Threshold limit for percentage variation of calculated voltage ratio from set voltage ratios (VoltRatioLx, where Lx is phase L1, L2 and L3)
UMin> 5.0 – 100.0 %UB 0.1 50.0 Minimum bus voltage for operation in
% of UBase
UdifWrn> 1.0 – 95.0 %UB 0.1 5.0 Phase voltage differential warning level in % of UBase
tDefWrn 0.00 – 60.00 s 0.01 5.00 Definite time delay to warning
UdifAlm> 1.0 – 95.0 %UB 0.1 8.0 Phase voltage differential alarm level in % of UBase
tDefAlm 0.00 – 60.00 s 0.01 5.00 Definite time delay to alarm
Udif> 1.0 – 95.0 %UB 0.1 10.0 Phase voltage differential trip level in
% of UBase
CurveType Definite time
Programmable		 – – Definite time Selection of time delay curve type for trip
tDefTrip 0.00 – 60.00 s 0.01 5.00 Definite time delay for trip
k 0.05 – 1.10 – 0.01 0.05 Time multiplier for programmable curve for trip
tMin 0.00 – 60.00 s 0.01 0.10 Minimum operate time for programmable curve for trip
tReset 0.00 – 60.00 s 0.01 0.02 Reset time delay for warning, alarm and trip
tPCrv 0.000 – 3.000 – 0.001 1.000 Parameter P for programmble curve for trip
tACrv 0.005 – 200.000 – 0.001 1.000 Parameter A for programmble curve for trip
tBCrv 0.50 – 100.00 – 0.01 1.00 Parameter B for programmble curve for trip
tCCrv 0.0 – 1.0 – 0.1 0.0 Parameter C for programmble curve for trip
tDCrv 0.000 – 60.000 – 0.001 0.000 Parameter D for programmble curve for trip
CrvSat 0 – 100 – 1 0 Tuning parameter for programmable curve

SCPDPTOV Non group settings (advanced)

SCPDPTOV Non group settings (advanced)
Name Values (Range) Unit Step Default Description
BlockTrip Trip disabled
Trip enabled		 – – Trip enabled Trip blocked / enabled

SCPDPTOV Monitored data

SCPDPTOV Monitored data
Name Type Values (Range) Unit Description
LASTCOMP GROUP SIGNAL – – Indicates date and time when the last trigger was made for compensation
UDIFL1 REAL – kV Magnitude of differential voltage of phase L1
UDIFL2 REAL – kV Magnitude of differential voltage of phase L2
UDIFL3 REAL – kV Magnitude of differential voltage of phase L3
PUDIFL1 REAL – % Differential voltage magnitude of phase L1 in % of UBase
PUDIFL2 REAL – % Differential voltage magnitude of phase L2 in % of UBase
PUDIFL3 REAL – % Differential voltage magnitude of phase L3 in % of UBase
UL1 REAL – kV Bus voltage of phase L1
UL2 REAL – kV Bus voltage of phase L2
UL3 REAL – kV Bus voltage of phase L3
UTAPL1 REAL – kV Tap voltage of phase L1
UTAPL2 REAL – kV Tap voltage of phase L2
UTAPL3 REAL – kV Tap voltage of phase L3
UNSCB REAL – kV Measured voltage at capacitor bank neutral
USEDURATL1 REAL – – Magnitude of ratio between tap and bus voltage used for calculation of differential voltage of phase L1
USEDURATL2 REAL – – Magnitude of ratio between tap and bus voltage used for calculation of differential voltage of phase L2
USEDURATL3 REAL – – Magnitude of ratio between tap and bus voltage used for calculation of differential voltage of phase L3
URATIOL1 REAL – – Magnitude of ratio between tap and bus voltage of phase L1
URATIOL2 REAL – – Magnitude of ratio between tap and bus voltage of phase L2
URATIOL3 REAL – – Magnitude of ratio between tap and bus voltage of phase L3

Logics & highlights

Single line diagram of the typical single WYE shunt capacitor bank configuration

Single line diagram of the typical single WYE shunt capacitor bank

Differential voltage calculation

Differential voltage calculation

Voltage ratio calculation

Voltage ratio calculation

Grounded single WYE connected SCB

Grounded single WYE connected SCB

Calculation for grounded capacitor bank

Calculation for grounded capacitor bank

Ungrounded single WYE connected SCB

Ungrounded single WYE connected SCB

Calculation for ungrounded capacitor bank

Calculation for ungrounded capacitor bank

Programmable curve

Programmable curve

Simplified Warning, Alarm, and Trip logic

Simplified Warning, Alarm, and Trip logic

INHIBIT and BLOCK behavior in the function

INHIBIT and BLOCK behavior in the function

Cyclic reporting of calculated and stored voltage ratios over IEC 61850

Cyclic reporting of calculated and stored voltage ratios over IEC 61850

Differential voltage reporting over IEC 61850

Differential voltage reporting over IEC 61850
14
Apr
AB2

Current unbalance protection of SCB (SCUCPTOC) _ Setting & highlights _ AB2136

Posted on by Firoozeh

Overview

Any internal fault in the capacitor bank leads to unbalance in the Shunt capacitor banks (SCB) and severe damage to the entire bank, which can result in an explosion or fire. Generally internal faults in the shunt capacitor bank are due to the open or short-circuit of the capacitor units or elements. The “Current unbalance protection of SCB” function uses measured phase current (I3P) and measured unbalance current (I3UNB). Based on the measured unbalance current deviation from the stored reference current value, the function identifies the severity of the internal fault in the SCB.

For more detailed information on “Current unbalance protection of SCB” function, refer to ABB, Relion 670 Series manuals.

To see other supported functions, click here.

Function Identification

Function description IEC 61850
identification		 IEC 60617
identification		 ANSI/IEEE C37.2
device number
Current unbalance protection of SCB SCUCPTOC dI > C 60N

Signals & Setting Parameters

SCUCPTOC Function block

SCUCPTOC Function block

SCUCPTOC Input signals

SCUCPTOC Input signals
Name Type Default Description
I3P GROUP SIGNAL – Group signal for phase current input
I3UNB GROUP SIGNAL – Group signal for unbalance current input
BLOCK BOOLEAN 0 Block of function
BLKTR BOOLEAN 0 Block of trip
BLKALM BOOLEAN 0 Block of alarm
BLKWRN BOOLEAN 0 Block of warning
INHIBIT BOOLEAN 0 Inhibit the function
TRIGCOMP BOOLEAN 0 Trigger input to store the measured quantities into the IED memory. The stored values will be used for future compensation of the function measurement.
RESETCOMP BOOLEAN 0 Force the stored natural unbalance current and stored reference current to zero.

SCUCPTOC (60N) Output signals

SCUCPTOC (60N) Output signals
Name Type Description
TRIP BOOLEAN Common trip signal
TR_A BOOLEAN Trip signal from either phase A or from the neutral unbalance depending how many unbalance currents are used (3 or 1).
TR_B BOOLEAN Trip signal from phase B. Forced to zero when only one unbalance current is used.
TR_C BOOLEAN Trip signal from phase C. Forced to zero when only one unbalance current is used.
BFI BOOLEAN Common pickup signal
PU_A BOOLEAN Start signal from either phase A or from the neutral unbalance depending how many unbalance currents are used (3 or 1).
PU_B BOOLEAN Start signal from phase B. Forced to zero when only one unbalance current is used.
PU_C BOOLEAN Start signal from phase C. Forced to zero when only one unbalance current is used.
ALARM BOOLEAN General alarm signal
ALMA BOOLEAN Alarm signal for either phase A or for the neutral unbalance depending how many unbalance currents are used (3 or 1)
ALMB BOOLEAN Alarm signal from phase B. Forced to zero when only one unbalance current is used.
ALMC BOOLEAN Alarm signal from phase C. Forced to zero when only one unbalance current is used.
WARNING BOOLEAN General warning signal
WRNA BOOLEAN Warning signal for either phase A or for the neutral unbalance depending how many unbalance currents are used (3 or 1).
WRNB BOOLEAN Warning signal from phase B. Forced to zero when only one unbalance current is used.
WRNC BOOLEAN Warning signal from phase C. Forced to zero when only one unbalance current is used.
BLKDA BOOLEAN Phase A or neutral unbalance operation blocked, depending how many unbalance currents are used (3 or 1), when corresponding reference current going lower than set IMin value
BLKDB BOOLEAN Phase B operation blocked when corresponding reference current goes lower than set IMin value. Forced to zero when only one unbalance current is used.
BLKDC BOOLEAN Phase C operation blocked when corresponding reference current goes lower than set IMin value. Forced to zero when only one unbalance current is used.
COMPEXED BOOLEAN Indicates that a trigger was made for natural unbalance current calculation
IUNBCLCA REAL Magnitude of calculated unbalance current for either phase A or neutral unbalance depending how many unbalance currents are used (3 or 1).
IUNBCLCB REAL Magnitude of calculated unbalance current of phase B. Forced to zero when only one unbalance current is used.
IUNBCLCC REAL Magnitude of calculated unbalance current of phase C. Forced to zero when only one unbalance current is used.

SCUCPTOC Non group settings (basic)

SCUCPTOC Non group settings (basic)
Name Values (Range) Unit Step Default Description
SCBConf 1 unbalance curr
3 unbalance curr		 – – 1 unbalance curr Number of unbalance currents available
GlobalBaseSel1 1 – 12 – 1 1 Global base value selector for phase current
GlobalBaseSel2 1 – 12 – 1 1 Global base value selector for unbalance current

SCUCPTOC Group settings (basic)

SCUCPTOC Group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Off
On		 – – Off Operation Off / On
IMin 5.0 – 100.0 %IB1 0.1 10.0 Minimum reference phase current for operation in % of IBase1 with reference to phase current CT
IUnbalWrn> 1.0 – 1000.0 %IB2 0.1 10.0 Current unbalance warning level for unbalance current in % of IBase2 with reference to unbalance current CT
tDefWrn 0.00 – 60.00 s 0.01 5.00 Definite time delay for warning
IUnbalAlm> 1.0 – 1000.0 %IB2 0.1 20.0 Current unbalance alarm level for unbalance current in % of IBase2 with reference to unbalance current CT
tDefAlm 0.00 – 60.00 s 0.01 5.00 Definite time delay for alarm
IUnbal> 1.0 – 1000.0 %IB2 0.1 30.0 Current unbalance trip level for unbalance current in % of IBase2 with reference to unbalance current CT
CurveType Definite time
Programmable		 – – Definite time Selection of time delay curve type for trip
tDefTrip 0.00 – 60.00 s 0.01 5.00 Definite time delay for trip. Note that when Programmable IDMT curve is used, this definite time delay will be added to the calculated IDMT time.
k 0.05 – 999.00 – 0.01 1.00 Time multiplier for programmable curve for trip
tMin 0.00 – 60.00 s 0.01 0.00 Minimum operate time for programmable curve for trip
tReset 0.00 – 60.00 s 0.01 0.02 Reset time delay for warning, alarm and trip
tPCrv 0.005 – 3.000 – 0.001 2.00 Parameter P for programmble curve for trip
tACrv 0.005 – 200.000 – 0.001 28.200 Parameter A for programmble curve for trip
tBCrv 0.0000 – 20.0000 – 0.0001 0.1217 Parameter B for programmble curve for trip
tCCrv 0.1 – 10.0 – 0.1 1.0 Parameter C for programmble curve for trip

SCUCPTOC Non group settings (advanced)

SCUCPTOC Non group settings (advanced)
Name Values (Range) Unit Step Default Description
BlockTrip Trip disabled
Trip enabled		 – – Trip enabled Trip blocked / enabled

SCUCPTOC Monitored data

SCUCPTOC Monitored data
Name Type Values (Range) Unit Description
LASTCOMP GROUP SIGNAL – – Indicates date and time when last trigger was made for natural unbalance current calculation
IUNBCLCL1 REAL – A Magnitude of calculated unbalance current for either phase L1 or neutral unbalance depending how many unbalance currents are used (3 or 1).
IUNBCLCL2 REAL – A Magnitude of calculated unbalance current of phase L2. Forced to zero when only one unbalance current is used.
IUNBCLCL3 REAL – A Magnitude of calculated unbalance current of phase L3. Forced to zero when only one unbalance current is used.
IL1 REAL – A Reference quantity which is either phase L1 current or positive sequence current depending how many unbalance currents are used (3 or 1).
IL2 REAL – A Current in phase L2. Forced to zero when only one unbalance current is used.
IL3 REAL – A Current in phase L3. Forced to zero when only one unbalance current is used.
IUNBL1 REAL – A Unbalance current in either phase L1 or neutral depending how many unbalance currents are used (3 or 1).
IUNBL2 REAL – A Unbalance current in phase L2. Forced to zero when only one unbalance current is used.
IUNBL3 REAL – A Unbalance current in phase L3. Forced to zero when only one unbalance current is used.
IMEML1 REAL – A Stored value for either phase L1 current or positive sequence current depending how many unbalance currents are used (3 or 1).
IMEML2 REAL – A Stored phase current of phase L2. Forced to zero when only one unbalance current is used.
IMEML3 REAL – A Stored phase current of phase L3. Forced to zero when only one unbalance current is used.
IMEMUNBL1 REAL – A Stored unbalance current for either phase L1 or neutral depending how many unbalance currents are used (3 or 1).
IMEMUNBL2 REAL – A Stored unbalance current of phase L2. Forced to zero when only one unbalance current is used.
IMEMUNBL3 REAL – A Stored unbalance current of phase L3. Forced to zero when only one unbalance current is used.
IREFUNBL1 REAL – A Magnitude of stored unbalance current scaled to the reference quantity for either phase L1 or neutral depending how many unbalance currents are used (3 or 1).
IREFUNBL2 REAL – A Magnitude of stored unbalance current scaled to present phase current of phase L2. Forced to zero when only one unbalance current is used.
IREFUNBL3 REAL – A Magnitude of stored unbalance current scaled to present phase current of phase L3. Forced to zero when only one unbalance current is used.

Logics & highlights

Typical earthed/unearthed double WYE connected SCB

Typical earthed/unearthed double WYE connected SCB

Typical earthed/unearthed single WYE connected SCB with strings in each phase

Typical earthed/unearthed single WYE connected SCB with strings in each phase

Typical earthed/unearthed H-bridge connected SCB

Typical earthed/unearthed H-bridge connected SCB

Different terminologies of currents used in the function

Different terminologies of currents used in the function

Unbalance current calculation

Unbalance current calculation

Trigger logic

Trigger logic

Minimum reference current check logic

Minimum reference current check logic

Programmable curve

Programmable curve

Simplified Warning, Alarm, and Trip logic

Simplified Warning, Alarm, and Trip logic

Typical programmable curve

Typical programmable curve

INHIBIT and BLOCK behavior in the function

INHIBIT and BLOCK behavior in the function

Reporting over IEC 61850

Reporting over IEC 61850
14
Apr
AB2

Shunt capacitor cascading failure protection (SCCFPVOC) _ Setting & highlights _ AB2135

Posted on by Firoozeh

Overview

Cascading failures are series faults in shunt capacitor banks involving more than one capacitor unit (or even more than one rack). They are characterized by the presence of an unbalanced shunt capacitor bank (SCB) current. However, as the connected power system is much stronger than the SCB rating, any unbalance voltage due to cascading faults inside the capacitor bank is typically not present in the system. The “Shunt capacitor cascading failure protection” function provides protection against cascading faults and has two modes to detect the unbalances.

For more detailed information on “Shunt capacitor cascading failure protection” function, refer to ABB, Relion 670 Series manuals.

To see other supported functions, click here.

Function Identification

Function description IEC 61850
identification		 IEC 60617
identification		 ANSI/IEEE C37.2
device number
Shunt capacitor cascading failure protection SCCFPVOC 2 (I > /U <) 51 V

Signals & Setting Parameters

Function block of cascading failure protection

Function block of cascading failure protection

SCCFPVOC Input signals

SCCFPVOC Input signals
Name Type Default Description
I3P GROUP SIGNAL – Group signal for current input
U3P GROUP SIGNAL – Group signal for voltage input
BLOCK BOOLEAN 0 Block of function
BLKST1 BOOLEAN 0 Block of step 1
BLKST2 BOOLEAN 0 Block of step 2

SCCFPVOC Output signals

SCCFPVOC Output signals
Name Type Description
TRIP BOOLEAN General trip signal
TR1 BOOLEAN Trip signal from step 1
TR2 BOOLEAN Trip signal from step 2
START BOOLEAN General start signal
ST1 BOOLEAN Start signal from step 1
ST2 BOOLEAN Start signal from step 2
IMEAS REAL Measured current magnitude
UMEAS REAL Measured voltage magnitude

SCCFPVOC (51V) Non group settings (basic)

SCCFPVOC (51V) Non group settings (basic)
Name Values (Range) Unit Step Default Description
GlobalBaseSel 1 – 12 – 1 1 Selection of one of the Global Base Value groups

SCCFPVOC (51V) Group settings (basic)

SCCFPVOC (51V) Group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Disabled
Enabled		 – – Disabled Operation Disabled/Enabled
CurrentInput NegSeq
3*ZeroSeq		 – – 3*ZeroSeq Select current signal which will be measured inside function. Note: Needs to have same value as VoltageInput
VoltageInput -NegSeq
-3*ZeroSeq		 – – -3*ZeroSeq Select voltage signal which will be measured inside function. Note: Needs to have same value as CurrentInput
l_2nd/l_fund 10.0 – 50.0 % 1.0 40.0 Ratio of second to fundamental current harmonic in %
Operation1 Disabled
Enabled		 – – Disabled Operation step 1 Disable/Enable
IPickup 121 – 400 %IB 1 125 Pickup current level for step 1 in % of IBase
tDef1 0.00 – 60.00 s 0.01 0.50 Definite time delay of step 1
VDepFact1 0.0330 – 0.7075 – 0.0001 0.0640 Voltage dependent factor for step 1. Note: it is recommended to be set as [1-(117/I>)], to follow the capacitor impedance
HarmRestr1 Disabled
Enabled		 – – Disabled Enable block of step 1 by 2nd harmonic restrain to be used for 3I0 current only
Operation2 Disabled
Enabled		 – – Disabled Operation step 2 Disable/Enable
pickup2 125 – 400 %IB 1 130 Pickup current level for step 2 in % of IBase
tDef2 0.00 – 60.00 s 0.01 0.50 Definite time delay of step 2
VDepFact2 0.0640 – 0.7075 – 0.0001 0.1000 Voltage dependent factor for step 2. Note: it is recommended to be set as [1-(117/I>>)], to follow the capacitor impedance
HarmRestr2 Disabled
Enabled		 – – Disabled Enable block of step 2 by 2nd harmonic restrain to be used for 3I0 current only

SCCFPVOC Monitored data

SCCFPVOC Monitored data
Name Type Values (Range) Unit Description
IMEAS REAL – A Measured current magnitude
UMEAS REAL – kV Measured voltage magnitude

Logics & highlights

Cascading failure within SCB

Cascading failure within SCB

General voltage restrained characteristic for SCB cascading protection (Stage 1 and stage 2)

General voltage restrained characteristic for SCB cascading protection (Stage 1 and stage 2)

General voltage restrained characteristic for SCB cascading failure protection (Stage 1 and Stage 2)

General voltage restrained characteristic for SCB cascading failure protection (Stage 1 and Stage 2)

Block condition for additional zero sequence 2nd harmonic restrained feature

Block condition for additional zero sequence 2nd harmonic restrained feature

Logic Diagram of cascading failure protection

Logic Diagram of cascading failure protection
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