Impact of Transformer Topology on Short-Circuit Analysis in Distribution Systems with Inverter-Based Distributed Generationsopen access
- Authors
- Cho, Namhun; Yoon, Myungseok; Choi, Sungyun
- Issue Date
- 8월-2022
- Publisher
- MDPI
- Keywords
- distributed energy resource; fault current; interconnection transformer; inverter-based distributed generation; short-circuit analysis; transformer topology
- Citation
- SUSTAINABILITY, v.14, no.15
- Indexed
- SCIE
SSCI
SCOPUS
- Journal Title
- SUSTAINABILITY
- Volume
- 14
- Number
- 15
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/143822
- DOI
- 10.3390/su14159781
- ISSN
- 2071-1050
- Abstract
- Distributed energy resources (DERs), recently introduced into distribution systems, are mainly inverter-based distributed generations (IBDGs), which have different short-circuit behaviors from conventional synchronous-based distributed generations (SBDGs). Hence, this study presents a comprehensive analysis of the short-circuit behaviors of distribution systems with IBDGs, based on sequence networks and superposition, from the perspectives of interconnected transformers, and observes the flow of zero-sequence fault currents with different transformer topologies. Moreover, two- and three-winding transformers with various bank connection types and groundings are investigated. It was concluded that the transformer topology and its grounding influence the fault current contribution in zero-sequence networks, and the high penetration of IBDGs alters the fault current magnitude and phase angles.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > School of Electrical Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.