Technical considerations concerning the use of magnetic potential transformers on MOV series-compensated transmission network

Author

Lord, René ; Lambert, Jocelyn ; Hébert, Yves ; Chaîné, Robert ; Riffon, Pierre ; Parent, Jacques

Author_Institution

Hydro-Quebec, Montreal, Que., Canada

Volume

9

Issue

4

fYear

1994

fDate

11/1/1994 12:00:00 AM

Firstpage

1901

Lastpage

1907

Abstract

This paper discusses technical considerations concerning the use of magnetic-type potential transformers (PT) on a series-compensated transmission system. Particularly when series capacitors equipped with metal oxide varistors (MOV) are used, magnetic-type PTs will be subject to special conditions, one being the presence of very low subsynchronous voltages due to fault clearing. Other aspects of MOV series compensation are also discussed. Solutions for obtaining an accurate PT despite these phenomena are proposed, and the problem of PT characteristics verification is discussed. These PTs will be used in a shunt-reactor switching scheme for overall voltage control along the Hydro-Quebec transmission network

Keywords

compensation; potential transformers; power system control; reactors (electric); switching; transmission networks; varistors; voltage control; Hydro-Quebec transmission network; MOV series-compensated transmission network; fault clearing; magnetic potential transformers; shunt-reactor switching; very low subsynchronous voltages; voltage control; Cables; Capacitors; Inductors; Magnetic separation; Shunt (electrical); Stability; Substations; Threshold voltage; Voltage measurement; Voltage transformers;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.331448

Filename

331448