摘要
针对复杂配电网发生短路、接地等故障时难以快速准确找到故障点的问题,设计了基于微功率无线组网技术的配电线路智能在线监测系统。系统由故障指示器、不对称电流源、配变监测终端和监控中心组成。故障指示器实时监测配电线路,在发生相间短路、接地故障时翻牌和亮灯,并通过无线组网技术,将信息发送到监控中心;结合不对称电流源的线路电流变化和故障指示器检测的突变电流来进行精确定位,提高了接地故障定位的准确率,最后监控中心通知维修人员进行线路抢修。
In view of the difficulty in finding fault points quickly and accurately when short-circuit and grounding faults occur in a complex distribution network,an intelligent on-line monitoring system for distribution lines based on micro-power wireless networking technology is designed.The system consists of a fault indicator,an asymmetric current source,a transformer monitoring terminal and a monitoring center.The fault indicator monitors the distribution line in real time.In case of interphase short circuit and grounding fault,the fault indicator flips the card and lights up,and sends the information to the monitoring center through wireless networking technology.Combined with the line current change of the asymmetric current source and the sudden current detected by the fault indicator,the accurate positioning can be carried out,which greatly improves the accuracy of the ground fault positioning.Finally,the monitoring center notifies the maintenance personnel to carry out emergency repair of the line.
作者
孙杰
李欣
柳杨
靳方明
黄晓峰
孙毅
李学忠
徐凤霞
SUN Jie;LI Xin;LIU Yang;JIN Fang-ming;HUANG Xiao-feng;SUN Yi;LI Xue-zhong;XU Feng-xia(State Grid Heilongjiang Electric Power Company Qiqihar Power Supply Company,Heilongjiang Qiqihar 161006,China;School of Mechanical and Electronic Engineering,Qiqihar University,Heilongjiang Qiqihar 161006,China)
出处
《齐齐哈尔大学学报（自然科学版）》
2019年第4期20-21,共2页
Journal of Qiqihar University(Natural Science Edition)
基金
国网黑龙江省电力有限公司科学计划项目(LNZB-2018-XSTP2-030)
关键词
故障指示器
微功率无线组网技术
故障定位
fault indicator
micro-power wireless networking technology
fault location
