工频变化量距离保护检验公式分析

Analysis on Test Formula of the Distance Relay Based on the Variatation of Power Frequency Components

分析了工频变化量距离保护的动作方程和检验公式 ,提出了正确的使用方法。

It analyses the action equation and test formula of the distance relay based on the varitation of power frequency components and points out the exact using methods.