高海拔地区±800 kV换流变压器直流耐压试验回路空间电场分布仿真分析  

Simulation Analysis of Space Electric Field Distribution in DC Withstand Voltage Test Loop of Converter Transformer±800 kV in High Altitude Area

作　　者：王理丽 李子彬 包正红 林万德 张成磊 刘志华[2] WANG Lili;LI Zibin;BAO Zhenghong;LIN Wande;ZHANG Chenglei;LIU Zhihua

机构地区：[1]国网青海省电力公司电力科学研究院,青海西宁810008 [2]西安交通大学,陕西西安710000

出　　处：《青海电力》2020年第2期31-34,共4页Qinghai Electric Power

基　　金：国网青海省电力公司科技项目(52280718000C)。

摘　　要：根据±800 kV换流变压器直流耐压试验要求,考虑高海拔环境对电场分布的影响,采用COMSOL有限元分析软件,对海拔3000 m条件下,由直流高压发生器、连接线、换流变本体组成的±800 kV换流变压器直流耐压及极性反转试验回路进行空间电场分布仿真分析。仿真结果表明,试验回路空间最大电场强度分布在阀侧套管均压环上,且小于海拔3000 m的起晕场强;当换流变与直流高压发生器距离大于2 m,理论上各设备之间不会产生电晕。According to the DC withstand voltage test requirements of±800 kV converter transformers,considering the influence of high altitude environment on the electric field distribution,adopting the finite element analysis software COMSOL,the elevation of 3000 m under the condition of the dc high voltage generator,cables,change of rheological ontology+800 kV converter transformer dc withstand voltage and polarity reversal test loop simulation space electric field distribution analysis.The simulation results show that the maximum electric field strength in the test circuit space is distributed on the valve side casing pressure equalizing ring,and is less than the corona initiation field strength at an altitude of 3000 m;When the distance between converter and DC high voltage generator is more than 2m,theoretically there will be no corona between each equipment.

关 键 词：高海拔 换流变压器 直流耐压试验 电场分布 

分 类 号：TM852[电气工程—高电压与绝缘技术]