Application of controlled switching to 500-kV shunt reactor current interruption

Author

Kobayashi, Takayuki ; Tsukao, Shigeyuki ; Ohno, Ichiro ; Koshizuka, Tadashi ; Nishiwaki, Susumu ; Miyake, Nobuyuki ; Matsushita, Kozo ; Saida, Toshiyuki

Author_Institution

Tokyo Electr. Power Co., Japan

Volume

18

Issue

2

fYear

2003

fDate

4/1/2003 12:00:00 AM

Firstpage

480

Lastpage

486

Abstract

To suppress reignition overvoltages caused when a 500-kV shunt reactor current is interrupted by a 550-kV one-break circuit breaker (CB), a study was carried out on controlled switching. Using a full-scale test circuit, reactor current interruption tests were carried out to obtain the relation between opening phase angle and generation of reignition. The results showed that even with the dispersion of CB operations taken into account, there were contact separation points free from high reignition overvoltages. It was also proved that no voltage escalations were caused by reignition and high-frequency arc extinction, and that overvoltages due to current chopping were at a safe level in terms of equipment insulation.

Keywords

circuit breakers; overvoltage protection; power system faults; power system protection; reactors (electric); substations; switching transients; 500 kV; 550 kV; controlled switching; current chopping; equipment insulation; full-scale test circuit; high-frequency arc extinction; one-break circuit breaker; opening phase angle; reactor current interruption tests; reignition generation; reignition overvoltages suppression; shunt reactor current; substation; voltage escalations; Cables; Capacitance; Circuit breakers; Circuit testing; Inductors; Shunt (electrical); Substations; Surges; Switchgear; Switching circuits;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2003.809611

Filename

1193868