10kV架空绝缘导线雷电过电压与防雷综合措施研究  

Research on Comprehensive Protections of 10kV Overhead Insulated Distribution Lines from Lightning

作　　者：韩晋平 王晓丰[2] 马心良 陈荣[2] 曹丽娟[2] 杨辉 喻剑辉[2] 周文俊[2] 

机构地区：[1]河南漯河供电公司,漯河462001 [2]武汉大学高电压研究所,武汉430072

出　　处：《高电压技术》2008年第11期2395-2399,共5页High Voltage Engineering

基　　金：国家电网公司科技项目(SGCC[2005]087)~~

摘　　要：为研究10kV架空绝缘导线雷电过电压与防雷措施,计算了其雷电感应过电压和感应电流的幅值,并研究了雷电感应过电压和感应电流对绝缘线路的危害。根据计算结果,感应过电压幅值能够>400kV,超过现有配电网线路的绝缘水平;通过试验,得出架空绝缘线路的绝缘水平以及采用绝缘横担来防止雷击断线的最优参数;同时结合理论分析得出采用400mm绝缘横担能够有效防止雷击断线事故;根据不同运行状况,提出了综合考虑运用绝缘横担、穿刺型防弧金具、防雷支柱绝缘子和氧化锌避雷器来防止雷击断线的措施。该研究为10kV架空绝缘导线的防雷提供了参考。By calculating the amplitudes of the lightning induced overvoltage and induced current of the overhead insulated distribution lines, this paper studies the damage of o the lines caused by induced overvoltage and induced current. According to the calculations, the value of induced overvoltage can be 300-400 kV and more, greater than current insulation level of distribution lines. Then through test, this paper researches the insulating level of current overhead insulated lines and obtains the optimal parameters to prevent lightning strike by adopting insulating crossarms. In the meantime, combining the theoretical analysis, it is known that adopting 400 mm insulating cross-arms can prevent lightning break. As a result, depending on different operations and consideration comprehensively, this paper puts forward measures as insulating cross-arms, the stab-type arc-protection hardware, lightning-proof post insulators and lightning arrestors to prevent lightning break.

关 键 词：绝缘导线 雷击断线 感应过电压 绝缘横担 防雷支柱绝缘子 氧化锌避雷器 

分 类 号：TM863[电气工程—高电压与绝缘技术]