330 kV输电线路均压环优化研究  

Optimization Research of Grading Ring for 330 kV Transmission Line

作　　者：曹晶[1] 张勤[1] 谢梁[1] 谷莉莉[1] 全姗姗[1] 彭宗仁[2] 

机构地区：[1]中国电力科学研究院,湖北武汉430074 [2]电力设备电气绝缘国家重点实验室(西安交通大学),陕西西安710049

出　　处：《电网与清洁能源》2012年第10期15-19,共5页Power System and Clean Energy

基　　金：国家电网公司科技项目(SG10061)~~

摘　　要：通过有限元法建立均压环仿真计算模型,对4种不同管径以及2种不同曲率半径330 kV交流输电线路均压环表面场强进行计算分析,在特高压户外试验场以及特高压交流试验基地环境气候实验室开展均压环可见电晕试验研究,获得不同结构型式均压环表面电场分布规律、结构优化试验对比结果以及不同海拔条件下均压环电晕起始电压特性曲线。研究结果表明,通过优化均压环管径以及曲率半径方法,可有效降低均压环表面电场强度,提高电晕起始和熄灭电压,推荐校正算式校正误差小于GB311.1-1997和IEC60071-2:1996所提方法,可为高海拔地区输电线路均压环选型及优化设计提供参考依据。The simulation, and electric-field strength calculation of 4 kinds of different pipe diameter and 2 kinds of different curvature radius for grading rings of 330 kV transmission line by finite element method were discussed and experimental research work of visual corona was performed at Ultra-high Voltage Testing Field and Environmental Climate Laboratory. The electric-field distribution, test results of optimized grading ring and inception voltage characteristic curves at different altitudes were given for different types of grading rings. It is indicated that it is feasible to reduce electric-field strength to enhance inception and extinction voltage by optimizing pipe diameter and curvature radius of grading rings. Correction errors by the recommended formula discussed at the end of the paper are lower than that of GB311.1-1997 and IEC60071-2：1996, and can be used as reference for the type selection and optimization design for grading rings of high altitude transmission line.

关 键 词：高海拔 均压环 电晕放电 有限元 电场分布 海拔校正 

分 类 号：TM85[电气工程—高电压与绝缘技术]