方向高频保护负序功率方向元件的非全相运行性能分析

ANALYSIS FOR THE PERFORMANCE OF POWER LINE CARRIER PROTECTION BASED ON NEGATIVE SEQUENCE POWER DIRECTION IN THE CONDITION OF INCOMPLETE PHASE OPERATION

着重分析了负序方向元件在超高压线路中非全相运行时的工作情况 ,比较了各种电容电流补偿方法对负序方向高频保护元件的影响。EMTP仿真结果表明 ,线路两侧断线又发生故障时 。

Power line carrier protection is widely applied in HV and EHV line protection. This article analyses the performance of the negative sequence power directional relay in the condition of incomplete phase operation, and compares the influences of different capacitance current compensation methods on the negative sequence power directional relay. The results of digital simulation using EMTP prove that negative sequence power directional relay based on fault component can operate correctly when faults occur on the condition of incomplete phase operation of both side disconnection.