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| Analysis of explosion fault of potential transformer arrester caused by phase-to-phase fault of 10kV ungrounded system |
| WAN Shouxiong |
| Liuzhou Power Supply Bureau of Guangxi Power Grid Corporation, Liuzhou, Guangxi 545000 |
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Abstract In this paper, an explosion fault of 10kV bus potential transformer arrester caused by phase-to-phase fault of 10kV line is coM Prehensively analyzed based on the actual situation and the waveforms of fault record. The main factors that cause the arrester explosion are ferromagnetic resonance and low-frequency saturation current. The overvoltage caused by ferromagnetic resonance is 3.3 times that of normal voltage. At last, the corresponding treatment and improvement measures are put forward, which is used to reduce the economic loss.
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Received: 24 May 2021
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| Cite this article: |
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WAN Shouxiong. Analysis of explosion fault of potential transformer arrester caused by phase-to-phase fault of 10kV ungrounded system[J]. Electrical Engineering, 2021, 22(11): 56-62.
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| URL: |
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https://dqjs.cesmedia.cn/EN/Y2021/V22/I11/56
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2021, Vol. 22 
