{"title":"Analysis of stator ground protection schemes for hydro-generator of Three-Gorges power plant based on zero sequence voltages","authors":"N. Tai, Xianggen Yin, Deshu Chen","doi":"10.1109/PESW.2000.847641","DOIUrl":null,"url":null,"abstract":"New mathematical models for the zero-sequence voltage of large hydro-generator on turn basis are used to study hydro-generator stator ground fault protection schemes in this paper. The evaluation and the comparison of the characteristics of some stator ground protection schemes are described by means of protection coverage-critical resistance curves. And the simulation results showed that those schemes would suffer low sensitivity when they are used to huge hydro-generators in Three-Gorges power plant. To overcome this disadvantage, new ground fault protection schemes with higher sensitivity based on fault components are developed in this paper.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"9","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PESW.2000.847641","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 9
Abstract
New mathematical models for the zero-sequence voltage of large hydro-generator on turn basis are used to study hydro-generator stator ground fault protection schemes in this paper. The evaluation and the comparison of the characteristics of some stator ground protection schemes are described by means of protection coverage-critical resistance curves. And the simulation results showed that those schemes would suffer low sensitivity when they are used to huge hydro-generators in Three-Gorges power plant. To overcome this disadvantage, new ground fault protection schemes with higher sensitivity based on fault components are developed in this paper.
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