Title :
Application of controlled switching to 500 kV shunt reactor current interruption
Author :
Kobayashi, Takehiko ; Tsukao, Shigeyuki ; Ohno, Lchiro ; Koshizuka, Tadashi ; Nishiwaki, Susumu ; Miyake, Nobuyuki ; Matsushita, Kozo ; Saida, Toshiyuki
Abstract :
Summary form only given. To suppress re-ignition overvoltages caused when a 500 kV shunt reactor current is interrupted by a 550 kV one-break circuit breaker, 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 the generation of re-ignition. The results showed that even with the dispersion of circuit breaker operations taken into account, there were contact separation points free from high re-ignition overvoltages. It was also proved that no voltage escalations were caused by re-ignition and high-frequency arc extinction, and that the overvoltages due to current chopping were at safe level in terms of equipment insulation.
Keywords :
circuit breakers; overvoltage protection; power system faults; power system protection; reactors (electric); switching substations; 500 kV; 550 kV; controlled switching; current chopping; equipment insulation; high-frequency arc extinction; one-break circuit breaker; opening phase angle; reactor current interruption tests; reignition overvoltages; reignition overvoltages suppress; shunt reactor current interruption; substation; test circuit; voltage escalations; Circuit breakers; Circuit testing; Ignition; Inductors; Insulation; Shunt (electrical); Substations; Surges; Switching circuits; Voltage;
Conference_Titel :
Power Engineering Society General Meeting, 2003, IEEE
Print_ISBN :
0-7803-7989-6
DOI :
10.1109/PES.2003.1267459
