输电线路不同操作过电压限制技术研究  

Study on Limitation Techniques for Different Switching Overvoltage of Transmission Line

作　　者：王振宇[1] 苏咏梅[1] 易善明 

机构地区：[1]郑州职业技术学院,郑州450121 [2]国网河南省电力公司,郑州450018

出　　处：《电瓷避雷器》2017年第6期38-43,共6页Insulators and Surge Arresters

基　　金：2016年度河南省高等学校重点科研项目应用研计划(编号:16B413007)

摘　　要：对用于输电线路操作过电压限制的多种不同方法分别进行了分析和比较研究,对包含合闸电阻、避雷器、相控开关方法等都进行了仿真和分析,对同时应用多种限制方法的情况也进行了研究,本文的仿真分析基于一条实际运行的500kV输电线路,通过研究发现,在断路器中加装合闸电阻是限制操作过电压时最为有效的方法,实际工程中,由于合闸电阻加装成本和故障率较高,其应用受到一定限制。本文的研究结果将有助于基础设施建设过程中正确运用操作过电压限制技术。In this paper performance of several transmission line switching overvohage limitation techniques are analyzed and compared with each other. Application of closing resistors, intermediate surge arresters and controlled switching methods are simulated and analyzed. The effects of simultaneous application of the mentioned techniques are also investigated. Simulations and analysis are based on a re- al 500 kV transmission line. According to the results of simulations, application of closing resistor has the most significant effect on the overvoltage, although, due to the reliability and economic constraints, this method is not applied any more. The results of this comprehensive study will be helpful for the utili- ties to properly select the suitable switching overvoltage limitation technique.

关 键 词：操作过电压 绝缘配合 合闸电阻 避雷器 相控开关 

分 类 号：TM75[电气工程—电力系统及自动化]