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

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 betwe...

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Bibliographic Details
Published inIEEE transactions on power delivery Vol. 18; no. 2; pp. 480 - 486
Main Authors Kobayashi, T., Tsukao, S., Ohno, I., Koshizuka, T., Nishiwaki, S., Miyake, N., Matsushita, K., Saida, T.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.04.2003
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Cables
Capacitance
Circuit breakers
Circuit testing
Cutting
Dispersions
Inductors
Interruption
Overvoltage
Reignition
Shunt (electrical)
Shunt reactors
Substations
Surges
Switchgear
Switching
Switching circuits
Voltage
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Summary: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.
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ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2003.809611