Table of Contents

GE / Compensated overvoltage (ANSI 59C, IEC PTOV) _ Element settings & highlights _ GU8075

Table of Contents

Overview

The “Compensated overvoltage” function provides protection against an overvoltage due to the opening of the remote terminal of a transmission line—the so called the Ferranti effect. This can be achieved using a transfer-tripping scheme.

For more detailed information on “Compensated overvoltage” element, refer to GE, Universal Relay (UR) family of products, Version 8.0x manuals.

To see other supported elements, click here.


Setting Parameters


Modbus memory map for Setting parameters

Products Hex address Register name Range Units Step Format Default
D60, L60, L90x 23B5 Compensated OV Function 0 to 1 1 F102 0 (Disabled)
" 23B6 Compensated OV Source 0 to 5 1 F167 0 (SRC 1)
" 23B7 Compensated OV Zc Mag 0 to 500 ohm 0.01 F001 200
" 23B8 Compensated OV Zc Ang 30 to 90 degrees 1 F001 90
" 23B9 Compensated OV I_1max 0.01 to 1 pu 0.01 F001 20
" 23BA Compensated OV STG1 PKP 0.25 to 3 pu 0.001 F001 1300
" 23BB Compensated OV STG1 Delay 0 to 600 sec 0.01 F001 100
" 23BC Compensated OV STG2 PKP 0.25 to 3 pu 0.001 F001 1300
" 23BD Compensated OV STG2 Delay 0 to 600 sec 0.01 F001 100
" 23BE Compensated OV SGT3 PKP 0.25 to 3 pu 0.001 F001 1300
" 23BF Compensated OV STG3 Delay 0 to 600 sec 0.01 F001 100
" 23C0 Compensated OV Block 0 to 4294967295 1 F300 0
" 23C2 Compensated OV Target 0 to 2 1 F109 0 (Self-reset)
" 23C3 Compensated OV Events 0 to 1 1 F102 0 (Disabled)
F102 0 = Disabled, 1 = Enabled
F109 0 = Self-reset, 1 = Latched, 2 = Disabled
F167 0 = SRC 1, 1 = SRC 2, 2 = SRC 3, 3 = SRC 4, 4 = SRC 5, 5 = SRC 6

Logics & highlights


Phasor diagram for a transmission line with remote terminal open

Phasor diagram for a transmission line with remote terminal open

Calculation


Compensated overvoltage logic

Compensated overvoltage logic

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