{"title":"线路保护用电流互感器的尺寸评定","authors":"H. Altuve, N. Fischer, G. Benmouyal, D. Finney","doi":"10.1109/CPRE.2013.6822025","DOIUrl":null,"url":null,"abstract":"This paper discusses the factors to consider for sizing current transformers (CTs) for line protection applications. We first cover CT basics, with emphasis on errors and ac and dc saturation. We also discuss the criteria to avoid CT saturation. Then we analyze the effect of CT saturation on overcurrent, distance, directional, and differential elements. Further, we present the advances in protection element design to improve security and speed under CT saturation conditions. Finally, we discuss the tools available to the protection engineer for CT sizing and provide some guidelines.","PeriodicalId":221348,"journal":{"name":"2013 66th Annual Conference for Protective Relay Engineers","volume":"55 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2013-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"17","resultStr":"{\"title\":\"Sizing current transformers for line protection applications\",\"authors\":\"H. Altuve, N. Fischer, G. Benmouyal, D. Finney\",\"doi\":\"10.1109/CPRE.2013.6822025\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper discusses the factors to consider for sizing current transformers (CTs) for line protection applications. We first cover CT basics, with emphasis on errors and ac and dc saturation. We also discuss the criteria to avoid CT saturation. Then we analyze the effect of CT saturation on overcurrent, distance, directional, and differential elements. Further, we present the advances in protection element design to improve security and speed under CT saturation conditions. Finally, we discuss the tools available to the protection engineer for CT sizing and provide some guidelines.\",\"PeriodicalId\":221348,\"journal\":{\"name\":\"2013 66th Annual Conference for Protective Relay Engineers\",\"volume\":\"55 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2013-04-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"17\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2013 66th Annual Conference for Protective Relay Engineers\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/CPRE.2013.6822025\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2013 66th Annual Conference for Protective Relay Engineers","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CPRE.2013.6822025","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Sizing current transformers for line protection applications
This paper discusses the factors to consider for sizing current transformers (CTs) for line protection applications. We first cover CT basics, with emphasis on errors and ac and dc saturation. We also discuss the criteria to avoid CT saturation. Then we analyze the effect of CT saturation on overcurrent, distance, directional, and differential elements. Further, we present the advances in protection element design to improve security and speed under CT saturation conditions. Finally, we discuss the tools available to the protection engineer for CT sizing and provide some guidelines.