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The analysis and solving of a main transformer\'s false tripping in a 35 kV substation
Pages: 127-131
Year: Issue:  5
Journal: Relay

Abstract: 介绍了一起变电站主变差动保护误动作原因的分析与处理过程.厂家和电力公司技术人员在变电站对差动保护设备进行了详细检查,并结合保护动作数据,对跳闸事故进行了缜密分析,发现引起主变保护误动作的原因如下:(1)电流相序为负相序;(2)高压侧电缆绝缘有问题;(3)回路极性接反.然后采取了针对性的措施,排除了缺陷和隐患,保证了该地区电网的稳定运行.
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