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| Analysis of the resonance of potential transformer in 500kV gas insulated switchgear |
| Jia Jingli |
| China Yangtze Power Co., Ltd, Xiangjiaba Hydropower Plant, Yibin, Sichuan 644612 |
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Abstract Through the practical solution of a case of ferromagnetic resonance overvoltage that occurs in parallel with a switch break parallel voltage equalizing capacitor and an incoming line voltage transformer, the causes and solutions of PT resonance are analyzed and summarized, and the impact of the GIS PT layout location on the operation and maintenance of the power station analysis and discussion.
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Received: 10 March 2020
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2020, Vol. 21 
