±800kV云广UHVDC输电线路无线电干扰测量与分析  

Measurement and Analysis of the Radio Interference for ±800 kV UHVDC Transmission Lines

作　　者：邓军 肖遥 楚金伟 赵宇明 张斌[3] 倪园[3] 夏辉 张建功[3] 

机构地区：[1]南方电网超高压输电公司 [2]南方电网科学研究院 [3]国网电力科学研究院

出　　处：《安全与电磁兼容》2012年第2期20-23,28,共5页Safety & EMC

摘　　要：阐述了输电线路由于导线电晕产生无线电干扰的基本原理,基于测量仪器、天线形状、测量位置、数据读取和干扰水平评价方法提出了高精度测量无线电干扰的条件。利用该方法进行现场测量和分析表明:负极半压无线电干扰随着与负极对地投影距离的增大呈现衰减趋势;负极全压运行时无线电干扰值较负极半压,正极半压和负极全压,不同月份全压运行时偏大;双极运行时无线电干扰的测量值比单极运行时要稳定,在海拔高度增加的情况下,其值满足标准限值。The basic principle of radio interference （RI） produced by the conductor corona has been illustrated. The high accuracy con- ditions for the measurement of RI have also been proposed based on the influences of measurement instruments, the shape of antenna, measurement location, data reading and the evaluation method of interference level. The measurement data and analysis results showed that the smaller RI should be obtained by increasing the projection distance between the negative pole and ground, and the bigger RI strengthen for full-voltage operation of negative pole could be acquired compared to that of half-voltage operation of positive pole, full-voltage operation of negative pole, half-voltage operation of negative pole and that of full-voltage operation of bipolar for different months. The more stable measuring value of bipolar, which can meet the requirements of the standard limits even at the higher altitude, can be obtained than that of unipolar.

关 键 词：特高压直流 输电线路 无线电干扰 高海拔 

分 类 号：TM937.3[电气工程—电力电子与电力传动]