±500kV直流输电线路暂态故障监测装置的设计与应用  

Design and Application of Transient Fault Monitoring Device for ±500 kV HVDC Transimission Lines

作　　者：魏旭[1] 谢天喜[2] 陶风波[2] 王铭民[1] 周志成[2] 

机构地区：[1]江苏省电力公司,江苏南京210024 [2]江苏省电力公司电力科学研究院,江苏南京211103

出　　处：《江苏电机工程》2014年第6期23-25,29,共4页Jiangsu Electrical Engineering

摘　　要：高压直流输电系统因暂态过程导致故障或停运时,目前所采用的录波仪只能记录极线电压和电流,无法提供相关的高频故障波形信息以实现故障的快速识别,不利于迅速排除故障和恢复送电。为了监测直流输电线路上的高频暂态故障行波和雷电侵入波,文中研制了可直接安装于±500kV直流导线上的暂态故障监测装置,设计了适用于直流线路的新型供电系统、高频传感器、数据采集与传输单元等,并进行了现场应用,监测到的雷电波形数据与雷电定位系统进行对比后验证了装置的有效性和可靠性,可为直流输电系统暂态故障的监测、识别和复现提供技术手段。When HVDC transmission system has a system failure or outage because of equipment insulation withstand transient overvoltage threat, the recorder in nowadays can only record the pole line voltage and current, it can＇t provide the high frequency fault waveform information related to identify the fault in a short time, so the time of trouble shooting and restoring power supply will be delayed. In order to monitor the transient traveling wave and lighting invasion wave through the HVDC transmission line, this paper designed a transient fault monitoring device for ±500 kV DC transmission line, including suitable new power supply system, the high frequency sensor, data collecting and transmission unit. Based on the design, the prototype of the device is used and the lighting waveform data is monitored and showed its validity and reliability. This paper provides technical means to monitor, identify and reproduce a transient fault of HVDC transmission system.

关 键 词：高压直流 线路 暂态故障监测 行波 罗氏线圈 

分 类 号：TM866[电气工程—高电压与绝缘技术]