两台35kV主变雷击事故分析

Analysis of lightning strikes faults of two 35 kV main transformers

针对苏州供电公司的两台 3 5 k V主变在雷暴雨后发生的绕组匝间故障进行了分析 ,对 3 5 k V主变的冲击试验条件与运行状态进行了比较 ,建议采用与运行状态相同的试验方式 ,并加强匝间绝缘 。

The situation of the turn to turn fault in two 35 kV main transformers of Suzhou Power Supply Company occurred after a thunder storm was introduced and the reason of the fault was analyzed. Comparison was made between impact test condition and actual operational state. The result of tests with the same condition as that of actual operation was analyzed and checked and some necessary protection measures were put forward for reference to avoid this kind of faults in the future.