电气技术  2022, Vol. 23 Issue (11): 74-79    DOI:
研究与开发 |
配电网电缆故障在线监测及定位系统
郭自刚, 徐天乐, 陈玉林, 王光, 陈俊
南京南瑞继保电气有限公司,南京 211102
On-line monitoring and locating system for cable fault in distribution network
GUO Zigang, XU Tianle, CHEN Yulin, WANG Guang, CHEN Jun
NR Electric Co., Ltd, Nanjing 211102
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摘要 本文开发一套配电网电缆故障在线监测及定位系统,可实现局部放电监测预警、护层环流监测预警、行波选线、行波测距功能。系统采用高精度对时同步技术,通道间和装置间同步采集,可同时监测多回路、多相电缆;采用无死区记录和行波启动确认技术,可以准确记录故障原始波形,方便故障分析与处理;采用行波波头准确识别和测距模式选择技术,提高电缆故障定位的准确性。该系统集成度高,适用于复杂的配电网系统,具有较高的推广价值。
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郭自刚
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关键词 ： 配电网电缆,  在线监测,  局部放电（PD）,  行波选线,  行波定位（TWFL）    
Abstract：In this paper, a set of on-line monitoring and locating system for cable fault in distribution network is proposed, which includes the functions of partial discharge monitoring, sheath circulation monitoring, traveling wave fault line selection and traveling wave fault location. High precision time synchronization technology is adopted in this system to realize synchronous acquisition between channels and devices, and multi-loop and multi-phase cable can be monitored simultaneously. Reliable startup of traveling wave and non-dead zone recording technology are used to accurately record the original waveform of the fault, which is convenient for fault analysis and processing. The accurate identification and location mode selection technology of traveling wave is adopted to improve the accuracy of cable fault location. The system is highly integrated and suitable for complex distribution system, which has high popularization value.
Key words： distribution network cable    on-line monitoring    partial discharge (PD)    traveling wave fault line selection    traveling wave fault location (TWFL)   
收稿日期: 2022-07-08     
作者简介: 郭自刚（1979—）,男,湖北省随州市人,硕士,高级工程师,从事电气设备绝缘在线监测及故障诊断产品研究及开发工作。
引用本文:   
郭自刚, 徐天乐, 陈玉林, 王光, 陈俊. 配电网电缆故障在线监测及定位系统[J]. 电气技术, 2022, 23(11): 74-79. GUO Zigang, XU Tianle, CHEN Yulin, WANG Guang, CHEN Jun. On-line monitoring and locating system for cable fault in distribution network. Electrical Engineering, 2022, 23(11): 74-79.
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https://dqjs.cesmedia.cn/CN/Y2022/V23/I11/74