{"title":"Power System Dynamic State Estimation of Grid-Forming Inverters With Current Limiter","authors":"Xingyu Zhao;Bendong Tan;Junbo Zhao","doi":"10.1109/TPWRS.2024.3460417","DOIUrl":null,"url":null,"abstract":"When the current limiter activates during large disturbances, the grid-forming inverter (GFM) switches from a voltage source to a current source. This oversight may undermine the accuracy of dynamic state estimation (DSE). To address this issue, this paper models the current limiter as a time-varying impedance, thereby presenting a unified state-space representation for DSE. This allows capturing the dynamics of GFMs in the presence and absence of current limitations. Numerical results on GFMs connected to a modified IEEE 39-bus system demonstrate the effectiveness of the proposed method.","PeriodicalId":13373,"journal":{"name":"IEEE Transactions on Power Systems","volume":"40 1","pages":"1156-1159"},"PeriodicalIF":7.2000,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Power Systems","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10679897/","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
When the current limiter activates during large disturbances, the grid-forming inverter (GFM) switches from a voltage source to a current source. This oversight may undermine the accuracy of dynamic state estimation (DSE). To address this issue, this paper models the current limiter as a time-varying impedance, thereby presenting a unified state-space representation for DSE. This allows capturing the dynamics of GFMs in the presence and absence of current limitations. Numerical results on GFMs connected to a modified IEEE 39-bus system demonstrate the effectiveness of the proposed method.
期刊介绍：
The scope of IEEE Transactions on Power Systems covers the education, analysis, operation, planning, and economics of electric generation, transmission, and distribution systems for general industrial, commercial, public, and domestic consumption, including the interaction with multi-energy carriers. The focus of this transactions is the power system from a systems viewpoint instead of components of the system. It has five (5) key areas within its scope with several technical topics within each area. These areas are: (1) Power Engineering Education, (2) Power System Analysis, Computing, and Economics, (3) Power System Dynamic Performance, (4) Power System Operations, and (5) Power System Planning and Implementation.
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