正序故障分量方向元件探讨

Discussion on Positive Sequence Fault Components and Directional Relay

分析了WXH-25(S)型微机线路保护正序方向元件的工作原理,提出用两故障分量正序电流进行比相的方法,来消除正序故障分量方向元件可能出现拒动的问题．

The paper analyzes the working principle of positive sequence directional relay in WXH-25（s） micrcvomputer based line protection, h also advances methodss that deal with phrase comparison of positive currents between double fault componeats to eliminate the probable stop refusal of positive sequence fault components and directional relay.