{"title":"单极直流输电系统单元保护故障鉴别器的选择","authors":"Soma Deb, H. Verma","doi":"10.1109/CATCON.2017.8280177","DOIUrl":null,"url":null,"abstract":"For bulk power transmission over longer distances, line commutated converter based HVDC technology is widely used. Protection systems currently used for HVDC line protection need further improvement in terms of sensitivity, speed and reliability. This paper presents a study of the response of HVDC system on occurrence of faults at different locations along the length of the line. The response has been analyzed in terms of change in voltage, current, power, impedance and transient energy measured at both the ends of the line. The study has been done by simulating a 500 kV LCC based monopolar HVDC system using PSCAD/EMTDC. Critical analysis of these variables shows that the changes in current, power and transient energy measured at the two ends of the dc transmission line are well suited as fault discriminators for unit protection of monopolar HVDC transmission system.","PeriodicalId":250717,"journal":{"name":"2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"142 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":"{\"title\":\"Selection of fault discriminators for unit protection of monopolar HVDC transmission system\",\"authors\":\"Soma Deb, H. Verma\",\"doi\":\"10.1109/CATCON.2017.8280177\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"For bulk power transmission over longer distances, line commutated converter based HVDC technology is widely used. Protection systems currently used for HVDC line protection need further improvement in terms of sensitivity, speed and reliability. This paper presents a study of the response of HVDC system on occurrence of faults at different locations along the length of the line. The response has been analyzed in terms of change in voltage, current, power, impedance and transient energy measured at both the ends of the line. The study has been done by simulating a 500 kV LCC based monopolar HVDC system using PSCAD/EMTDC. Critical analysis of these variables shows that the changes in current, power and transient energy measured at the two ends of the dc transmission line are well suited as fault discriminators for unit protection of monopolar HVDC transmission system.\",\"PeriodicalId\":250717,\"journal\":{\"name\":\"2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)\",\"volume\":\"142 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2017-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/CATCON.2017.8280177\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CATCON.2017.8280177","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Selection of fault discriminators for unit protection of monopolar HVDC transmission system
For bulk power transmission over longer distances, line commutated converter based HVDC technology is widely used. Protection systems currently used for HVDC line protection need further improvement in terms of sensitivity, speed and reliability. This paper presents a study of the response of HVDC system on occurrence of faults at different locations along the length of the line. The response has been analyzed in terms of change in voltage, current, power, impedance and transient energy measured at both the ends of the line. The study has been done by simulating a 500 kV LCC based monopolar HVDC system using PSCAD/EMTDC. Critical analysis of these variables shows that the changes in current, power and transient energy measured at the two ends of the dc transmission line are well suited as fault discriminators for unit protection of monopolar HVDC transmission system.
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