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| Cause analysis of a metro gas insulated switchgear tripping fault |
| XU Dongpo, WU Mengli, ZHU Junhong, LIANG Jiantao |
| XJ Electric Co., Ltd, Xuchang, He'nan 461000 |
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Abstract Aiming at the power loss event of multiple subway stations along the line caused by the tripping of a subway gas insulated switchgear (GIS), this paper analyzes the fault phenomenon, fault waveform characteristics and fault causes, and builds a simulation test model based on real-time digital simulation (RTDS) system to reproduce the on-site fault phenomenon. The analysis shows that the switchgear tripping is caused by the breakdown of the insulation layer of the cable, and relay protection works when the ground fault occurs. During the fault, the adjacent cables are affected by the grounding circulating current, and the relevant current protection acts to trip, which eventually leads to the power loss of multiple metro stations.
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Received: 06 September 2022
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| Cite this article: |
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XU Dongpo,WU Mengli,ZHU Junhong等. Cause analysis of a metro gas insulated switchgear tripping fault[J]. Electrical Engineering, 2022, 23(12): 70-74.
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| URL: |
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http://dqjs.cesmedia.cn/EN/Y2022/V23/I12/70
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2022, Vol. 23 
