中国电力 ›› 2015, Vol. 48 ›› Issue (1): 137-141.DOI: 10.11930.2015.1.137

• 智能电网 • 上一篇    下一篇

智能变电站电缆局部放电在线监测系统的研究

贾自杭1,李燕青2   

  1. 1. 国网河北省电力公司 培训中心,河北 石家庄 050031;
    2. 华北电力大学 河北省输变电设备安全防御重点实验室,河北 保定 071003
  • 收稿日期:2014-04-22 出版日期:2015-11-25 发布日期:2015-11-24
  • 作者简介:贾自杭(1987—),男,河北保定人,硕士,从事电气设备在线监测与故障诊断研究。E-mail: jiazihang0312@163.com

Researches on the Online Monitoring System for Partial Discharges of Power Cables in Smart Substations

JIA Zihang1, LI Yanqing2   

  1. 1. State Grid Hebei Training Center, Shijiazhuang 050031, China;
    2. Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, North China Electric Power University, Baoding 071003, China
  • Received:2014-04-22 Online:2015-11-25 Published:2015-11-24

摘要: 介绍了一种遵从于IEC 61850通信规约的智能变电站电缆局部放电在线监测系统。首先分析了电缆局部放电的检测原理及检测方法;然后设计了基于光纤同步触发和组网的监测硬件系统,以及基于用户数据报协议(user datagram protocol,UDP)和生产者/消费者模式的高速采集,并经过专家系统判别分析后能将监测结果通过IEC 61850规约实现共享的软件系统。最后用2种不同电极结构的局部放电类型,通过模拟实验对监测系统进行了检验。结果显示设备运行良好,监控平台能够准确地监视局部放电信号,能够识别出放电类型,并能通过IEC 61850通信规约将监测结果共享。

关键词: IEC 61850, 智能变电站, 电力电缆, 局部放电, 在线监测, 通信规约, 监控平台

Abstract: An online monitoring system in smart substations for partial discharges of cables based on IEC61850 was proposed. The detection principles and methods of partial discharges in cables were analyzed. A monitoring hardware system based on fiber synchronous triggering and fiber networks was designed as well as a monitoring software system which is a high-speed acquisition system based on UDP protocol and producer/consumer models. Moreover, this monitoring system’s results can be analyzed by an expert system and then shared via IEC61850 protocol. Finally, two kinds of partial discharge model experiments were simulated to verify the monitoring system. The results show that the system runs well, the monitors can distinguish partial discharge signals accurately, whose results can be shared via IEC61850 protocol.

Key words: IEC61850, smart substation, power cable, partial discharge, on-line monitoring, communication protocol, monitoring platform

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