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| Analysis of abnormal reclosing action of 220kV circuit breaker |
| LIU Yun |
| Yunnan Electric Power Technology Co., Ltd, Kunming 650217 |
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Abstract The abnormal action behavior of 220kV incoming line reclosing in a 220kV substation is studied, and the causes of abnormal action are analyzed. In view of the abnormal situation of single-phase instantaneous fault of the line and the actual triple tripping and triple reclosing of the circuit breaker, under the condition of determining the correct action of the protection device, starting from the cooperation between the secondary circuit and the protection, it is confirmed that the main reasons for this abnormal action are the wrong wiring of the secondary circuit and the improper cooperation between the protection. Finally, the corresponding rectification measures are put forward for the reclosing of this kind of wiring mode.
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Received: 11 January 2022
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2022, Vol. 23 
