1000kV同塔双回线路双回故障跳闸概率分析  

Analysis of Failure Trip Rate of 1000 kV Double Circuits on the Same Tower

作　　者：谷定燮[1] 戴敏[1] 李志军[1] 李振强[1] 

机构地区：[1]国网电力科学研究院,武汉430074

出　　处：《高电压技术》2009年第3期441-444,共4页High Voltage Engineering

基　　金：国家"十一五"科技支撑计划重大项目(2006BAA02A02)~~

摘　　要：为给1000kV同塔双回线路提供设计前提依据,通过对我国1000kV同塔双回线路的防雷计算分析和对我国500kV同塔双回线路以及日本1000kV特高压同塔双回线路(降压500kV运行)的故障调查分析,确定我国1000kV同塔双回线路发生双回同时故障跳闸的概率接近于零。根据我国1000kV同塔双回线路的特点,提出了我国1000kV同塔双回线路设计中考虑其潜供电流水平和限制措施、过电压水平和限制措施以及绝缘配合时,均可以不考虑双回同时故障的判断。这一研究为我国1000kV线路设计前提条件的确定提供了技术依据。We analyzed the lightning calculation of 1000 kV double-circuit line in China, the statistical operating experiences of 500 kV double circuit line in China and the UHV double-circuit transmission lines under 550 kV operation in Japan. Results show that the double circuit simultaneous failure trip rate of 1000 kV double-circuit line in China is nearly zero. Therefore, based on the characteristics of 1000 kV double-circuit line in China, double circuit simultaneous failure can be discarded on the research of the level and limitation measures of secondary arc current, the over-voltage level and limitation measures, and insulation coordination. This research provides technical support for the design of 1000 kV double-circuit line on the same tower in China.

关 键 词：1000 KV 同塔双回 线路 故障 跳闸率 故障类型 

分 类 号：TM862[电气工程—高电压与绝缘技术]