小峡电站并网无功偏大的原因及解决措施

Analysis and Treatment of Abnormally High Grid-connected Reactive Power in Xiaoxia Hydropower Station

小峡电站4台机组并网时无功普遍偏大,存在无功冲击的潜在危害,通过对无功偏大的几种情况的原因分析,提出了解决方案,成功解决了并网时无功偏大的问题。

When the generator units in Xiaoxia Hydropower Station are connected to the power grid,abnormally high reactive power is observed,which could generate potential damage to the power grid by reactive power impact. Possible reasons of this problem are analyzed. Treatment measures are proposed correspondingly and applied successfully.