Jun Jiang, G. Ma, W. Chang, Jian He, D. Luo, Chengrong Li, Qingmin Li
{"title":"Defects detection and localization of short cables with DAC method","authors":"Jun Jiang, G. Ma, W. Chang, Jian He, D. Luo, Chengrong Li, Qingmin Li","doi":"10.1109/CEIDP.2013.6748178","DOIUrl":null,"url":null,"abstract":"Localization XLPE cable defects with damped AC (DAC) voltage technique is suitable for medium-length cable (1000m~3000m), however, the precision decreases when the cable is shorter than 500m. For it is hard to distinguish the incident and reflected pulses in time using time domain reflectometry (TDR) with high oscillating frequency. To solve the problem, a compensation capacitor in parallel and optimization of detect unit and amplifier are proposed. This paper presents a laboratory experiment on 10kV XLPE short cables (<;500m) with four artificial typical defects. The results of defects detection and PD mapping are satisfactory, which prove the feasibility and effectiveness of damped AC voltage method to detect and locate the insulation defects of short cables.","PeriodicalId":393969,"journal":{"name":"2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","volume":"2 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CEIDP.2013.6748178","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
Localization XLPE cable defects with damped AC (DAC) voltage technique is suitable for medium-length cable (1000m~3000m), however, the precision decreases when the cable is shorter than 500m. For it is hard to distinguish the incident and reflected pulses in time using time domain reflectometry (TDR) with high oscillating frequency. To solve the problem, a compensation capacitor in parallel and optimization of detect unit and amplifier are proposed. This paper presents a laboratory experiment on 10kV XLPE short cables (<;500m) with four artificial typical defects. The results of defects detection and PD mapping are satisfactory, which prove the feasibility and effectiveness of damped AC voltage method to detect and locate the insulation defects of short cables.
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