基于雷电定位系统对一起220kV同塔双回输电线路雷击跳闸故障查找与研究

结合GPS雷电定位系统提供的地闪电流值,准确地对一起220 kV同塔双回输电线路雷击跳闸故障进行定位与查找,通过对现场杆塔尺寸、保护动作及接地电阻等资料的收集,采用反击耐雷水平和绕击几何电气模型等理论分析了线路跳闸原因,并提出了相关的整改建议。

Detection and Analysis of Tripping Fault Caused by Lightning Stroke in 220 kV Double-circuit Lines on the Same Tower Based on Lightning Location System

Based on the current values of ground flash provided by GPS lightning location system, an accurate location and troubleshooting of tripping fault caused by lightning stroke in a 220 kV double - circuit lines on the same tower is achieved. Accord- ing to the data collected in the tripping site such as the sizes of towers and poles, protection action and ground resistance etc. , the theories, such as lightning withstand level of back flashover and electrical geometrical model of shielding failure are adopted to analyze the causes of line tripping, and the corresponding suggestions for improvement are proposed.