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Simulation Analysis of a Busbar Differential Protection Malfunction Reason
Author(s): 
Pages: 15-17
Year: Issue:  S1
Journal: Qinghai Electric Power

Keyword:  母差保护 误动 分析;
Abstract: 通过对某330 kV变电站母差失灵保护误动原因的现场调查、理论分析和仿真模拟分析,从理论层面准确分析和阐述了造成母差失灵保护误动的原因。失灵保护的光隔开入抗干扰措施不完善,抗干扰延时未能起到应有的作用,无法躲过交流混入直流系统后所产生的"干扰",再加上该型号失灵保护开入重动继电器动作功率较低,是造成此次母差失灵保护误动的主要原因。
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