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对武汉市220kV李家墩变电站WXH-11高频保护的两次区外故障误动情况进行分析,提出了解决对策,并在实际运行中采用,效果良好。
This paper analyzes the two out-of-zone faults in WXH-11 high-frequency protection of 220kV Lijiadun substation in Wuhan, and puts forward the solutions to the problems. It is adopted in actual operation and works well.