基于振荡波的干式空心电抗器绝缘检测系统  

Insulation detection system of dry-type air-core reactor based on oscillation wave

作　　者：陈凌 王京保[3] 刘睿 刘策[4] 向天堂 CHEN Ling;WANG Jing-bao;LIU Rui;LIU Ce;XIANG Tian-tang(Power Research Institute,State Grid Sichuan Electric Power Company,Chengdu 610000,China;Guang’an Power Supply Company,State Grid Sichuan Electric Power Company,Chengdu 610000,China;Technology Center,Baoding Tianwei Xinyu Technology Development Co.Ltd.,Baoding 071000,China;School of Mechanical and Electrical Engineering,Hebei Agricultural University,Baoding 071001,China)

机构地区：[1]国网四川省电力公司电力科学研究院,成都610000 [2]国网四川省电力公司广安供电局,成都610000 [3]保定天威新域科技发展有限公司技术中心,河北保定071000 [4]河北农业大学机电工程学院,河北保定071001

出　　处：《沈阳工业大学学报》2020年第6期601-606,共6页Journal of Shenyang University of Technology

基　　金：四川省重点研发计划项目(2018GZDZX0043);国网四川省电力公司科技项目(521997150022).

摘　　要：针对干式空心电抗器匝间绝缘事故频繁发生的问题,提出了在振荡波下进行局部放电的绝缘检测方法,设计了一种能有效避免绝缘故障的干式空心电抗器绝缘检测系统.根据现场技术指标要求,通过MATLAB/Simulink搭建仿真模型确定系统中关键参数,利用试验平台对系统参数进行验证.结果表明,系统能有效地检测到故障电抗器两端电压振荡波的衰减和频率变化,通过引入局部放电检测手段,系统能清晰直观地检测出电抗器可能存在的微弱缺陷,及时发现干式空心电抗器早期绝缘故障,杜绝恶性事故的发生.Focused on the frequent occurrence of interturn insulation accidents in dry-type air-core reactor,an insulation detection method for partial discharge under oscillation wave was proposed,and an insulation detection system which could effectively prevent the insulation faults was designed.According to the on-spot requirements for technical indicators,the key parameters of system were determined by establishing a simulation model with MATLAB/Simulink,and the system parameters were verified by a test platform.The results show that the as-proposed system can effectively detect the attenuation of voltage oscillation wave and the change of frequency on both ends of failed reactor.Through introducing the partial discharge detection method,the as-proposed system can detect the weak defects possibly existing in the reactor clearly and intuitively,find out the early insulation faults of dry-type air-core reactor in time,and prevent the malignant accidents.

关 键 词：干式空心电抗器 绝缘检测 电压振荡波 MATLAB/SIMULINK软件 振荡频率 充电电容 局部放电 微弱缺陷 

分 类 号：TM47[电气工程—电器]