Zhao Qiang. Lightning-stroke Trip-out Analysis of 220kV Jiang-Long East Transmission Line[J]. 2005, (6): 4-5+24.DOI:
220kV江龙东线雷击跳闸分析
摘要
根据220 kV江龙东线跳闸现场收集的杆塔尺寸、保护动作及接地电阻等资料
采用绕击几何电气模型和反击耐雷水平等理论
并结合GPS雷电信息系统提供的地闪雷电流值
分析了线路跳闸的原因
并提出了相关整改建议。
Abstract
According to the data collected in the tripping site of 220kV Jiang-Long east transmission line such as the sizes of towers and poles
protection actuation and ground resistance etc.
electrical geometrical model of shielding failure and the theory of back flashover lightning impulse withstand level were adopted.The causes of line tripping were analyzed together with lightning current values of lightning flash to earth provided by GPS lightning information system and the corresponding suggestions for improvement were proposed.