摘要
分析500kV变电站电容式电压互感器(CVT)发生故障的原因,并解体进行了核实。文章认为造成电容式电压互感器发生故障的原因是:施工临理不到位,施工人员没有严格按照操作规程进行操作,致使更换地网时将旧地网的接地挖断;产品工艺设计存在问题,如CVT电压的单元过电压保护采用了避雷器。建议设备生产企业要提高产品的绝缘强度,严格产品设计工艺;加强对施工人员的培训和监管。
The paper analyzed CVT fault in 500 kV substation, determined the fault point, and disintegrated it to verify. The causes for the fault were found, such as unsuitable supervisory in construction, without operating strictly according to the working instruction, and design problem of product technology, which caused the fault when replacing the grounding mesh. The suggestions are put forward that the causes of fault must be solved carefully, especially the insulation strength of equipment and design technology of products should be improved by production enterprise, the training and supervisory for construction people should be strengthened.
出处
《电力设备》
2008年第10期65-67,共3页
Electrical Equipment
