Electrical Engineering  2020, Vol. 21 Issue (8): 103-106    DOI:
Maintenance & Fault Diagnosis of Electrical Equipment Current Issue| Next Issue| Archive| Adv Search |
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.
Key wordsgas insulated switchgear (GIS)      potential transformer (PT)      ferromagnetic resonance      installation location     
Received: 10 March 2020     
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Jia Jingli
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Jia Jingli. Analysis of the resonance of potential transformer in 500kV gas insulated switchgear[J]. Electrical Engineering, 2020, 21(8): 103-106.
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https://dqjs.cesmedia.cn/EN/Y2020/V21/I8/103
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