山区10kV架空配电线路防雷保护技术研究  

Study on Lightning Protection Technology of 10 kV Overhead Distribution Line in Mountainous Areas

作　　者：梁晨 高尚 付文庆 吕澳 LIANG Chen;GAO Shang;FU Wenqing;LV Ao(State Grid Beijing Mentougou Power Supply Company,Beijing 102300,China)

机构地区：[1]国网北京门头沟供电公司,北京102300

出　　处：《通信电源技术》2023年第1期201-203,共3页Telecom Power Technology

摘　　要：在雷电作用下架空配电线路的过电压增加电力系统出现故障的可能性,为此提出山区10 kV架空配电线路防雷保护技术研究.首先分析了在雷电作用下线路感应过电压和直击雷过电压强度,以线路电压不高于线路绝缘子串电压的50%为目标,分别计算了当耦合地线处于不接地状态和接地状态下的运行参数设置情况,以此实现对线路的防雷保护.在测试结果中,设计配电线路防雷保护技术可以在不同强度的雷击过电压下,控制线路过电压下降比例在50%以内,起到了保护线路的作用.Under the action of lightning,the over-voltage of overhead distribution lines will be affected,increasing the possibility of power system failure.Therefore,the research on lightning protection technology of 10 kV overhead distribution lines in mountain areas is proposed.Firstly,the induced over-voltage and direct lightning over-voltage intensity of the line under the action of lightning are analyzed.With the goal that the line voltage is not higher than 50%of the line insulator string voltage,the operation parameter settings are calculated respectively when the coupling ground wire is in the ungrounded state and grounded state,so as to achieve the lightning protection of the line.In the test results,the design of distribution line lightning protection technology can control the proportion of line overvoltage drop within 50%under different intensity of lightning overvoltage,which plays a role in protecting the line.

关 键 词：架空配电线路 防雷保护 感应过电压 直击雷过电压 线路电压 耦合地线 

分 类 号：TM75[电气工程—电力系统及自动化]