{"title":"Underground Power Cable Fault Detection and Localization Based on the Spectrum of Propagation Functions","authors":"Chunqi Liu;Yimin Hou;Zhimin Duan;Rui Shang;Kunpeng Wang;Dongsheng Chen","doi":"10.1109/TIM.2024.3453315","DOIUrl":null,"url":null,"abstract":"Multiple potential defects in cables cannot be detected and localized due to the low detection sensitivity of the time-domain reflectometry (TDR) method, as well as the cross-term interference problem of the time- and frequency-domain reflectometry method. A new method for fault detection in underground power cables is proposed based on the spectrum of propagation function. First, the propagation characteristics of various frequency signals in cables are analyzed to identify the causes of local irregularities in the spectrum of the propagation function (SPF) resulting from defects. Furthermore, the locations of defects are successfully identified using the integral transform algorithm. As broadband impedance spectroscopy (BIS) cannot accurately measure the input impedance of a 163 m cable for defect detection, the spectrum of propagation function is more suitable for long-distance cables. Finally, cables of 50, 66, and 163 m lengths are examined for mechanical damage and thermal aging defects. The fault localization error is within 0.21%, providing a technical reference for fault detection of underground cables.","PeriodicalId":13341,"journal":{"name":"IEEE Transactions on Instrumentation and Measurement","volume":null,"pages":null},"PeriodicalIF":5.6000,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Instrumentation and Measurement","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10663909/","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
Multiple potential defects in cables cannot be detected and localized due to the low detection sensitivity of the time-domain reflectometry (TDR) method, as well as the cross-term interference problem of the time- and frequency-domain reflectometry method. A new method for fault detection in underground power cables is proposed based on the spectrum of propagation function. First, the propagation characteristics of various frequency signals in cables are analyzed to identify the causes of local irregularities in the spectrum of the propagation function (SPF) resulting from defects. Furthermore, the locations of defects are successfully identified using the integral transform algorithm. As broadband impedance spectroscopy (BIS) cannot accurately measure the input impedance of a 163 m cable for defect detection, the spectrum of propagation function is more suitable for long-distance cables. Finally, cables of 50, 66, and 163 m lengths are examined for mechanical damage and thermal aging defects. The fault localization error is within 0.21%, providing a technical reference for fault detection of underground cables.
期刊介绍:
Papers are sought that address innovative solutions to the development and use of electrical and electronic instruments and equipment to measure, monitor and/or record physical phenomena for the purpose of advancing measurement science, methods, functionality and applications. The scope of these papers may encompass: (1) theory, methodology, and practice of measurement; (2) design, development and evaluation of instrumentation and measurement systems and components used in generating, acquiring, conditioning and processing signals; (3) analysis, representation, display, and preservation of the information obtained from a set of measurements; and (4) scientific and technical support to establishment and maintenance of technical standards in the field of Instrumentation and Measurement.