风偏引发变电站多处引下线放电跳闸故障技术分析

Technical Analysis of Multiple Down Lead Discharge Trip Events in Substations Caused by Wind Bias

通过阐述风偏引发220kV站两台主变及220kV一段母线跳闸事件,基于保护动作情况、故障点定位、数据资料对比,分析故障发生的直接原因,并针对发展变化的天气情况重新测评老旧站设计,提出初步的应对措施,以供类似跳闸事件参考。

This paper introduces an event of two main transformers and a section of 220kV bus trip in 220kV station under the influence of thunderstorm accompanied by strong wind and strong convection weather.Through the analysis of protection action,the fault point is located,the data obtained from the evidence is compared with the design data of the station,and the direct cause of the event is analyzed.According to the changing weather conditions,the design of the old station is reassessed,carry out the special research on wind deflection prevention of double downlead,and put forward preliminary countermeasures for similar events.