{"title":"Effect of three-winding transformer models on the analysis and protection of mine power systems","authors":"M. Oommen, J. Kohler","doi":"10.1109/IAS.1993.299221","DOIUrl":null,"url":null,"abstract":"The impact of accurate, three-winding transformer models in the analysis of mine power systems is examined. Though the disparity in voltage regulation is minimal, the enhanced representation of three-winding transformers seriously affects the results of both steady-state and first-cycle fault analysis. Fault current magnitudes could be underestimated by as much as 60% at strategic locations in the mine power system. This directly affects the choice and sizing of protective and coordination devices used in mine power systems. The effect of winding temperature is also important, but the values do not vary too much from values computed for correctly represented, four-bus, three winding transformer models.<<ETX>>","PeriodicalId":345027,"journal":{"name":"Conference Record of the 1993 IEEE Industry Applications Conference Twenty-Eighth IAS Annual Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1993-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"8","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Conference Record of the 1993 IEEE Industry Applications Conference Twenty-Eighth IAS Annual Meeting","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IAS.1993.299221","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 8
Abstract
The impact of accurate, three-winding transformer models in the analysis of mine power systems is examined. Though the disparity in voltage regulation is minimal, the enhanced representation of three-winding transformers seriously affects the results of both steady-state and first-cycle fault analysis. Fault current magnitudes could be underestimated by as much as 60% at strategic locations in the mine power system. This directly affects the choice and sizing of protective and coordination devices used in mine power systems. The effect of winding temperature is also important, but the values do not vary too much from values computed for correctly represented, four-bus, three winding transformer models.<>
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