1000kV输电线路同期合闸过电压的研究  

Research on Over-voltage Limit in Synchronizing Switching of 1 000 kV Transmission Lines

作　　者：陈思浩[1] 吴政球[1] 陈加炜 蔡俊 

机构地区：[1]湖南大学电气与信息工程学院,湖南省长沙市410082 [2]萧山供电局,浙江省杭州市311200

出　　处：《电力系统自动化》2007年第5期46-49,共4页Automation of Electric Power Systems

摘　　要：随着电网电压等级的提高,对输电线路操作过电压允许值提出了更加苛刻的要求。国内外超高压系统中用得最多的利用避雷器与合闸电阻限制操作过电压的方法,在特高压系统中还能不能得到满足呢?文中利用ATP-EMTP软件分别对国内第1条特高压交流输电试验示范工程——晋东—南阳—荆门特高压交流输电工程中的1000kV输电线路使用避雷器和合闸电阻限制同期合闸过电压进行了分析研究,仿真结果表明利用多级合闸电阻与在线路两端和中部同时安装避雷器的方法效果最好。With the increasing level of voltage in electric networks, the allowable value of switching over-voltage of the transmission lines has become more and more concerned matter, The method, in which arrester and closing resistor are applied to limit switching over-voltage, is extensively used in EHV. With ATP EMTP, hence, the effects for the arrester and closing resistor to limit over-voltage in synchronizing switching of UHV system are investigated on the first 1 000 kV UHV AC transmission pilot project in China. The transmission system lies from the southeast Shanxi, via Nanyang in Henan province, to Jingmen in Hubei province, The results of simulations in this paper indicate that the strategy to use multi-stage closing resistors or use MOA in both the ends and mid of the line can work well for limiting the over-voltage of 1 000 kV UHV AC transmission system.

关 键 词：特高压输电 操作过电压 避雷器 合闸电阻 ATP-EMTP 

分 类 号：TM86[电气工程—高电压与绝缘技术]