超低频与变频谐振电压下电缆缺陷检测性能的比对分析  

Comparative Analysis of Cable Defect Detection Performance Under Ultra-low Frequency and Frequency Conversion Resonant Voltages

作　　者：韩丹 郭小凯 HAN Dan;GUO Xiaokai(Zhuhai Power Supply Bureau,Guangdong Power Grid Co.,Ltd.,Zhuhai 519075,China)

机构地区：[1]广东电网有限责任公司珠海供电局,广东珠海519075

出　　处：《电工技术》2021年第21期151-153,156,共4页Electric Engineering

摘　　要：超低频与变频谐振电压测试是电力电缆绝缘状态检测的有效方法。对不同类型的电缆缺陷检测方法进行了综合比较,给定了不同检测手段的优缺点及适用环境。针对超低频与变频谐振测试,通过设计电缆缺陷试品与搭建现场仿真测试平台,比较了两种方法对电缆相同缺陷的检测性能。试验结果表明,超低频测试与变频谐振测试均可实现对局部放电的有效检测,但是超低频检测在介损测量试验中的表现并不理想。Very low frequency and frequency conversion resonant test is an effective method to detect the insulation state of power cables.Different types of cable defect detection methods are comprehensively compared,and the advantages and disadvantages and applicable environments of different detection methods are given.For very-low frequency and frequency-tuned series resonant testing,the detection performance of the two methods on the same defect of the cable is compared by designing the cable defect sample and setting up an on-site simulation test platform.The test results show that both the very-low frequency test and the frequency-tuned series resonant testing can achieve effective detection of partial discharge,but the performance of the very-low frequency test in the dielectric loss measurement test is not ideal.

关 键 词：电力电缆 超低频 变频谐振 局部放电 介损测量 

分 类 号：TM83[电气工程—高电压与绝缘技术]