摘 要:电缆是电力系统的重要组成部分,为了确保输配电安全性和稳定性,设计电缆故障在线检测系统非常重要。故设计了一种电缆故障的在线检测系统,通过分析电缆故障和电缆局部放电特性,选取电缆电容漏电流值、局部脉冲电流、环境温度、环境湿度四个特征量进行检测,检测系统可以以这些数据为基础在线监测电缆绝缘状况,有效减少和预防漏电事故的发生。
关键词:电缆故障;局部放电;在线监测;Proteus
DOI:10.19850/j.cnki.2096-4706.2021.23.017
中图分类号:TP311 文献标识码:A 文章编号:2096-4706(2021)23-0064-05
Design of Online Detection System for Cable Fault
WANG Keqin
(Cccc Mechanical & Electrical Engineering Co., Ltd., Beijing 100011, China)
Abstract: Cable is an important part of the power system. In order to ensure the safety and stability of transmission and distribution, it is very important to design an online detection system for cable faults. Therefore, an online detection system for cable fault is designed, by analyzing the cable fault and cable partial discharge characteristics, four characteristic quantities of cable capacitance leakage current value, partial pulse current, ambient temperature and ambient humidity are selected for detection. The detection system can monitor the cable insulation status online based on these data, so as to effectively reduce and prevent the occurrence of leakage accidents.
Keywords: cable fault; partial discharge; online monitoring; Proteus
参考文献:
[1] 孙晓刚,李云红 . 红外热像仪测温技术发展综述 [J]. 激光与红外,2008,38(2):101-104.
[2] WEEDY B M,THELWELL M J. Transient thermal performance of e.h.v. cable joints[J].Proceedings of the Institution of Electrical Engineers,1972,119(4):472-478.
[3] 陈瑞龙 .XLPE 电缆局部放电在线监测系统的研制 [D]. 上海:上海交通大学,2014.
[4] 蔡华波,陈达,金益迥 . 电力电缆的故障检测技术分析[J]. 集成电路应用,2020,37(2):114-115.
[5] 董小兵,蔡军,江秀臣,等 .10 ~ 35 kV XLPE 电缆在线监测技术 [J]. 电力自动化设备,2005(9):20-24.
[6] 严璋,朱德恒 . 高电压绝缘技术:第 2 版 [M]. 北京:中国电力出版社,2007:195.
[7] 杨静,朱晓岭,董翔,等 . 基于护层电流的高压电缆故障在线监测和诊断 [J]. 高电压技术,2016,42(11):3616-3625.
[8] CASTELLON J,NOTINGHER P,AGNEL S,et al. Electricfileld and apace and space charge measurements in thick power cable isulation [J].IEEE Electrical Insulation Magazine,2009,25(3): 30-42.
[9] 李文泉,兰生.常见的电力电缆状态在线监测方法综述 [J]. 电气开关,2013,51(6):1-7.
[10] 段乃欣,罗俊华,邱毓昌,等 . 用于 XLPE 电力电缆局放检测的宽频带电磁耦合法的研究 [J]. 电线电缆,2002(2): 24-26.
[11] 李傲梅,王林森 . 零磁通霍尔电流传感器磁路仿真 [J]. 化工自动化及仪表,2011,38(10):1200-1202.
作者简介:王克勤(1984.07—),男,汉族,江苏新沂人,工程师,本科,研究方向:电缆的故障检测。