高海拔地区特高压杆塔的合成电场和电位转移电流实测研究  

Study on synthetic electric field and potential transfer current of UHV tower in high attitude area

作　　者：曲辉 林涛[1] 陈鹤冲 周林 彭勇 毛小虎 陈波 QU Hui;LIN Tao;CHEN Hechong;ZHOU Lin;PENG Yong;MAO Xiaohu;CHEN Bo(School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China;State Grid Corporation of China,Beijing 100031,China;Southwest Branch,State Grid Corporation of China,Chengdu 610041,China;China Electric Power Research Institute,Wuhan 430060,China;State Grid Sichuan Company Maintenance Company,Chengdu 610041,China)

机构地区：[1]武汉大学电气与自动化学院,湖北武汉430072 [2]国家电网有限公司,北京100031 [3]国家电网有限公司西南分部,四川成都610041 [4]中国电力科学研究院有限公司,湖北武汉430060 [5]国家电网四川省公司检修公司,四川成都610041

出　　处：《电力自动化设备》2020年第5期220-224,共5页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(51177111)。

摘　　要：针对2000 m高海拔地区±800 kV特高压直流带电作业过程中,作业人员将承受特高压杆塔产生的合成电场和电位转移电流的问题,开展了特高压杆塔的合成电场和电位转移脉冲电流的实测研究。首先,从理论上分析了考虑离子流条件下特高压杆塔的合成电场计算方法和电位转移电流特性。然后,建立特高压杆塔带电作业和电位转移有限元仿真模型,并进行了仿真计算分析。最后,在高海拔特高压试验基地搭建了试验平台和测试系统,开展了特高压杆塔的合成电场和电位转移脉冲电流的现场实际测量工作,试验结果可以为高海拔地区特高压杆塔带电作业的安全防护标准提供制定依据。In view of the problem that the workers will bear the synthetic electric field and potential transfer current produced by UHV(Ultra-High Voltage) tower in the process of ±800 kV UHV DC live working in high altitude area(2000 meters),the actual measurement and research on the synthetic electric field and potential transfer pulse current of UHV tower are carried out. Firstly,the calculation method of the synthetic electric field and the characteristics of the potential transfer current of UHV tower considering the ion current are analyzed theoretically. Then,the finite element simulation model of UHV tower live working and potential transfer is established,and the simulation analysis is carried out. Finally,the test platform and test system are built in the high altitude UHV test base to carry out the field measurement of the synthetic electric field and potential transfer pulse current of UHV tower. The testing results can provide a basis for the safety protection standard of UHV tower live working in high altitude area.

关 键 词：高海拔 特高压输电 带电作业 合成电场 电位转移电流 现场试验 

分 类 号：TM744[电气工程—电力系统及自动化]