直流输电用直流与交流滤波器避雷器在线监测方案改进  

On-Line Monitoring Scheme Improvement of DC and AC Filter Arresters for HVDC Transmission

作　　者：吴辉 顾海青 周徐达 WU Hui;GU Haiqing;ZHOU Xuda(Shanghai Zhimeng Electric Power Science&Technology Co.,Ltd.,Shanghai 2001412,China;State Grid Shanghai Municipal Electric Power Company Shinan Power Supply Company,Shanghai 200233,China;State Grid Shanghai Municipal Electric Power Company Repair Company,Shanghai 200063,China)

机构地区：[1]上海置盟电力科技有限公司,上海201412 [2]国网上海市电力公司市南供电公司,上海200233 [3]国网上海市电力公司检修公司,上海200063

出　　处：《电瓷避雷器》2019年第4期171-175,181,共6页Insulators and Surge Arresters

摘　　要：直流输电系统中换流站大量使用高压直流避雷器以及高谐波环境下的交流滤波器避雷器,这些避雷器设备的运行工况直接关系到特高压跨区联网输电的可靠性,为此,需对这些避雷器设备的运行工况应进行实时监测.然而,目前对这些特殊避雷器设备在线监测基本还沿用简单整流系构造的普通交流避雷器监测装置,根本无法滤除谐波所产生的容性电流,实际也对这些特殊避雷器失去了监测意义.本文通过分析原因,从实用可靠的角度上提出了对这些特殊避雷器在原监测装置上分别加设低通滤波和带通滤波器的有效解决方案.In the DC transmission system,the converter stations use a large number of HVDC arresters and AC filter arresters in the high harmonic environment.The operating conditions of these arresters are directly related to the reliability of the UHV interconnected transmission.Therefore,the operation of these arresters should be monitored in real time.However,at present,the on-line monitoring of these special arrester basically adopts the common AC arrester monitoring device constructed by simple rectifier system,which cannot filter the capacitive current produced by the harmonics,and the monitoring significance of these special arresters is lost in practice.By analyzing the reasons,this paper proposes an effective solution to these special arresters with low pass filter and band pass filter on the original monitoring device from a practical and reliable point of view.

关 键 词：直流避雷器 交流滤波器避雷器 谐波 阻性电流 监测装置 

分 类 号：TM8[电气工程—高电压与绝缘技术]