冰闪故障特点及改造成效分析论证--基于山西电网500 kV及以上输电线路

摘要

In recent years, the main electric transmission line of Shanxi power grid has encountered flashover faults from icing and ice melting for many times, seriously affecting the normal operation of the power grid. The causes of icing flashover faults in the year 2009 ~ 2015 are analyzed statistically, and their respective measures are put forward. After the transformation, the trip rate from flashover faults reduces by more than 80%, which is remarkable, making great contributions to the safety and stability of the power grid in Shanxi province. Related countermeasures also have great reference values in the regions of similar climatic environment.%山西电网主网输电线路近几年多次发生覆冰和融冰闪络故障，严重影响电网正常运行。对2009～2015年冰闪故障原因进行了统计分析，并提出了各自的针对性措施。经改造，冰闪故障跳闸率降低80%以上，成效显著，为提升山西省电网安全性和稳定性做出了较大贡献。相关措施在气候环境相似的地区也具有较大借鉴价值。