{"title":"Case studies in facility-wide time synchronization","authors":"Terrence Smith, Christine Crites","doi":"10.1109/CPRE.2018.8349780","DOIUrl":null,"url":null,"abstract":"Time synchronization of protective LEDs can be critical for analyzing events, compensating for channel asymmetry in distance protection and streaming synchro-phasors. Satellite-based IRIG-B time can be used to provide a precise time signal but still has limitations. This paper examines some of the limitations of IRIG-B as a time source and discusses solutions to many issues as well as alternate timing signals. Case studies examined include: time synchronization across a large industrial facility using IEEE 1588 with multiple vintages of devices, distance limits of IRIG-B signals and time offset coordination for local times.","PeriodicalId":285875,"journal":{"name":"2018 71st Annual Conference for Protective Relay Engineers (CPRE)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 71st Annual Conference for Protective Relay Engineers (CPRE)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CPRE.2018.8349780","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
Time synchronization of protective LEDs can be critical for analyzing events, compensating for channel asymmetry in distance protection and streaming synchro-phasors. Satellite-based IRIG-B time can be used to provide a precise time signal but still has limitations. This paper examines some of the limitations of IRIG-B as a time source and discusses solutions to many issues as well as alternate timing signals. Case studies examined include: time synchronization across a large industrial facility using IEEE 1588 with multiple vintages of devices, distance limits of IRIG-B signals and time offset coordination for local times.
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