有限长高压直流输电线路无线电干扰电磁场的计算方法研究  

Study on the Calculation Method for Radio Interference Electromagnetic Field of HVDC Transmission Line with Finite Length

作　　者：谢莉[1] 赵录兴[1] 陆家榆[1] 鞠勇[1] 

机构地区：[1]中国电力科学研究院,北京100192

出　　处：《电工技术学报》2016年第1期96-102,共7页Transactions of China Electrotechnical Society

基　　金：国家重点基础研究发展(973)计划项目(2011CB209402);国家电网公司科技项目(GY71-10-003)资助

摘　　要：首先计算单个电晕源在两端开路的短输电线路上产生的电晕电流,根据电晕电流计算整个线路在地面上方空间中产生的电磁场,然后假定电晕源均匀注入,分析多个电晕源在线路上产生的总电晕电流的空间电磁场,将几种方法的计算结果进行对比,并与两种类型天线的测试结果进行对比,验证了在一定范围内采用无限长线路无线电干扰的方法计算试验线段的无线电干扰不会带来较大误差,可满足工程要求。Firstly,the corona current along an open-ended transmission line with finite length injected by a single corona source is deduced. So the above-ground spatial electromagnetic field produced by the whole line can be analyzed. Secondly, the total electromagnetic field generated by the current of multiple corona sources is obtained under the uniform injection assumption. By the comparison of the calculated results from various methods,as well as the measurement data with two kinds of antennae,it is verified that the error of the radio interference（ RI） of the test lines calculated by the method of in finite long line is acceptable within a certain range.

关 键 词：无线电干扰 电晕电流 试验线段 高压直流输电 

分 类 号：TM726[电气工程—电力系统及自动化]