强干扰下对特高压输电线路参数的异频法准确测量  

Different Frequency Method Accurately Measure Parameters Under Strong Interference of UHV Transmission Lines

作　　者：王东烨[1] 吴传玺 韦德福 邵建康 

机构地区：[1]国网辽宁省电力有限公司电力科学研究院,辽宁沈阳110006 [2]国网本溪供电公司,辽宁本溪117000 [3]上海大帆电气设备有限公司,上海201109

出　　处：《东北电力技术》2017年第4期24-26,31,共4页Northeast Electric Power Technology

摘　　要：在输电线路工频特性参数测量过程中,由于线路间的强烈互感,测试线路中存在很高的感应电压和感应电流,给线路参数的安全准确测量带来很大困难。对比提出了采用强抗干扰的异频测量法,配合全球领先的军用电子对抗数字滤波技术,抗干扰能力极强,在千倍的干扰下依然能准确测量微弱的异频信号。同时使用了遥控接地控制装置和远程光纤操作终端,能够让试验人员与高压完全隔离。开发的DF7000系统现场测量显示,其能够在强干扰的环境下对线路工频参数进行安全准确测量。In transmission line parameters measurement process beeause of the strong mutuat inductance between the lines, there is a high induced vohage and current lest circuit, safe and accurate measurement of line parameters to a great deal of problenls. This paper proposes the use of strong anti-frequency measurements by using different frequency measurement, with the whole world leading mili- tary electronic warfare digital filtering technology, anti-interference ability, the interference of a thousand still can accurately measure the slight dift^renees pilot signal. While using there mote ground control unit and remote fiber terminal, it allowing laboratory personnel and high pressure completely isolated. DF7000 system developed by field measurements show that is capable of strong interference in the environment of transmission line parameters are safe and accurate measurement.

关 键 词：线路参数 异频法 千倍干扰 遥控接地 

分 类 号：TM75[电气工程—电力系统及自动化]