110kV和220kV变压器中性点过电压保护方式的选择

Selection of over-voltage protective schemes on 110 kV and 220 kV transformer neutral

对于110kV和220kV变压器中性点的过电压保护,提出保护配置的原则,并在间隙动作试验数据的基础上,对各种保护方式进行了详细的分析和对比,提出选择意见。

This paper offers the principles of overvoltage protection for 110 kV and 220 kV transformer neutral. Based on the gap discharge test data, diversified protective schemes are compared and selection opinions given.