The phase comparison error is the primary factor leading to mistaken action in the selective leakageprotectivesystem of underground LV networks based on zero sequence current direction.
在基于零序电流方向原理的矿井低压电网选择性漏电保护中，比相误差是导致保护误动的主要因素。
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The selective leakageprotectivesystem can give out alarming signal or cut off the fault branches selectively when the leakage fault happens, and the non-fault branches are working normally.
The selectivity leakageprotectivesystem can give out alarming signal or cut off the fault branches selectively when the leakage fault happens, and the non-fault branches are working normally.