{"title":"Location Method of Single-Phase to Ground Fault in Distribution Network Based on Time-Frequency Matrix Analysis of Traveling Wave","authors":"Yuanchuan Wang, Zewen Li, Sitong Chen, Yiming Zhang","doi":"10.1007/s42835-024-02037-w","DOIUrl":null,"url":null,"abstract":"<p>This paper proposes a location method based on the analysis of the time-frequency matrix for distribution networks. Firstly, the traveling wave (TW) signal measured by the detection device at the end of each feeder is decoupled to obtain the aerial-mode component of the fault TW. Then, faults are preset at particular locations, such as the main line, primary branch, and secondary branch to construct time-frequency matrices by applying continuous wavelet transform (CWT) to the measured TW signals, and a matrix comparison library is established. The feeder and branch where the fault occurs are determined by comparing the similarity between the matrix extracted from each terminal at the time of fault occurrence and the matrix in the comparison library. Finally, this paper calculates the time for the wave head to reach the measurement point by plotting the energy evolution spectrum of the specific frequency band in the time-frequency matrix, and the precise location of the fault in the distribution network is achieved through the double-ended location method.</p>","PeriodicalId":15577,"journal":{"name":"Journal of Electrical Engineering & Technology","volume":null,"pages":null},"PeriodicalIF":1.6000,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Electrical Engineering & Technology","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s42835-024-02037-w","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
This paper proposes a location method based on the analysis of the time-frequency matrix for distribution networks. Firstly, the traveling wave (TW) signal measured by the detection device at the end of each feeder is decoupled to obtain the aerial-mode component of the fault TW. Then, faults are preset at particular locations, such as the main line, primary branch, and secondary branch to construct time-frequency matrices by applying continuous wavelet transform (CWT) to the measured TW signals, and a matrix comparison library is established. The feeder and branch where the fault occurs are determined by comparing the similarity between the matrix extracted from each terminal at the time of fault occurrence and the matrix in the comparison library. Finally, this paper calculates the time for the wave head to reach the measurement point by plotting the energy evolution spectrum of the specific frequency band in the time-frequency matrix, and the precise location of the fault in the distribution network is achieved through the double-ended location method.
期刊介绍:
ournal of Electrical Engineering and Technology (JEET), which is the official publication of the Korean Institute of Electrical Engineers (KIEE) being published bimonthly, released the first issue in March 2006.The journal is open to submission from scholars and experts in the wide areas of electrical engineering technologies.
The scope of the journal includes all issues in the field of Electrical Engineering and Technology. Included are techniques for electrical power engineering, electrical machinery and energy conversion systems, electrophysics and applications, information and controls.