建三江变电所主变220kV中性点保护间隙动作原因分析

Causes Analysis of Neutral Protection Gap Action of 200 kV Main Transformer in Jiansanjiang Substation

主变中性点保护间隙，应作为变电运行的定期检查内容，以防止间隙变化不能及时发现，造成间隙失去作用或误动。

The neutral protection gap of main transformer should be regarded as periodic inspection objective so as to prevent the gap change undiscovered in time and loss of gap action or misaction.