主变倒送电保护动作事件分析

Analysis of Action Events of Main Transformer Reverse Transmission Protection

对一起主变冲击试验中励磁涌流造成主变倒送电保护动作的事件进行了分析,得出了主变倒送电保护定值整定不合理的结论,并结合现场实际提出了主变倒送电保护定值整定方法。

An event that the inrush current caused the reverse transmission protection action of the main transformer in the impact test of the main transformer was analyzed,and a conclusion that the setting value of the reverse transmission protection of the main transformer was unreasonable was drawn.Combined with the actual situation,the setting method of the main transformer reverse transmission protection was put forward.