零流保护
protection of zero current
零序(负序)方向保护
zero-sequence(negative-sequence) direction protection
零序保护整定
coordination of zero-sequence protection
零序差流保护
zero sequence difference current protection
零序电流差动保护
zero_sequence current differential protection
零序电流速断保护
fast-tripping zero-sequence current protections
零序电流纵差保护
Zero-sequence Current Differential Protection
零序电压保护
Zero sequence voltage protection
零序方向过电流保护
zero-sequence direction over current protection