变压器铁芯故障分析及处理方法

Fault Analysis and Treatment Methods of Transformer Core

铁芯多点接地会在接地点形成闭合回路,引起铁芯局部过热导致绝缘油分解,还可能使接地片熔断或烧坏铁芯。根据铁芯的绝缘结构,对铁芯接地的要求进行了分析,归纳总结了几种变压器铁芯接地故障的类型并提出了应对措施。

The multi-point grounding of transformer core will form a closed loop and cause localized overheating of core which can make insulating oil decomposition and ground sheet melt and core damage. Based on the structure of core insulation, the requirements on core grounding are analyzed. The grounding fault types of transformer core are summarized and corresponding countermeasures of fault treatment are also proposed.