在电力系统振荡情况下提取故障分量的新方法

针对过去提取故障分量时易受系统振荡影响的问题，提出了一种新的适用于快速保护的提取故障分量新方法，用这种方法在不采用频率锁相的条件下也能极大地削弱振荡情况下的不平衡输出，保证反应于故障分量的保护在电力系统振荡时不误起动。

A New Method of Extracting Fault Components Under Power System Swing

To solve the problem that the existing method of extracting fault components is easily affected by power system swing,a new methed has been proposed in this paper,which can be used in high speed protection of transmission lines. This proped method ean greatly decrease unbal-ance outputs under power swing condilions without frequency tracking circuits,therefore it can make the protection using fault compnents operate correctly.