基于行波原理直流输电系统接地极线路故障测距系统设计

摘要

Aiming to the shortage of existing fault monitoring system of HVDC electrode lines, and introducing the operation principle on traveling wave based fault location system of the lines, this paper analyzes the main technologies for the system such as ultra-high-speed data acquisition, power supply and data communication etc., and provides a feasible desgin of the system. The realized fault location system based on traveling wave can monitor all kinds of failures of electrode lines continuously and provide their accurate location.%为解决现有的直流接地极线路故障监测系统的不足,需研发接地极线路故障测距系统.采用了基于行波原理的在线故障测距技术,借助了接地极线路故障本身所产生的行波信号来实现故障定位.分析了实现该系统设计所需要解决的超高速数据采集、极址处电源、数据通信等关键技术问题并提出了可行的设计.目前,样机的实验室试运行表明:基于行波原理直流输电系统接地极线路故障测距系统不仅能够连续监测接地极线路上发生的各种类型的故障,而且可以给出准确的故障点位置.