{"title":"Initial Results for Cramér-Rao Lower Bound for Forced Oscillations in Power Systems","authors":"Zikai Xu, J. Pierre","doi":"10.1109/NAPS52732.2021.9654610","DOIUrl":null,"url":null,"abstract":"Forced oscillations threaten the reliability of wide-area power systems, and different approaches to estimate forced oscillation have been explored over the past several years. Though these efforts provide powerful tools to estimate a forced oscillation's amplitude, frequency, and phase, a benchmark for estimation accuracy has not been available. This paper provides initial results in such a benchmark called the Cramér-Rao Lower Bound which is a lower bound on the variance in those estimates. A direct approach to derive Cramer-Ran Lower Bound of forced oscillation in power systems is given. In the end, the MinniWECC model is applied to assess the impact of different factors on the bound.","PeriodicalId":123077,"journal":{"name":"2021 North American Power Symposium (NAPS)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 North American Power Symposium (NAPS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/NAPS52732.2021.9654610","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 6
Abstract
Forced oscillations threaten the reliability of wide-area power systems, and different approaches to estimate forced oscillation have been explored over the past several years. Though these efforts provide powerful tools to estimate a forced oscillation's amplitude, frequency, and phase, a benchmark for estimation accuracy has not been available. This paper provides initial results in such a benchmark called the Cramér-Rao Lower Bound which is a lower bound on the variance in those estimates. A direct approach to derive Cramer-Ran Lower Bound of forced oscillation in power systems is given. In the end, the MinniWECC model is applied to assess the impact of different factors on the bound.