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Application of the First Replica Controller in Korean Power Systems

Authors
Song, JiyoungOh, SeungchanLee, JaegulShin, JeonghoonJang, Gilsoo
Issue Date
7월-2020
Publisher
MDPI
Keywords
replica controller; TCSC; HIL; DPT; real-time simulation; testing; control and protection; large-scale power system
Citation
ENERGIES, v.13, no.13
Indexed
SCIE
SCOPUS
Journal Title
ENERGIES
Volume
13
Number
13
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/54879
DOI
10.3390/en13133343
ISSN
1996-1073
Abstract
The purpose of this paper is to introduce, examine, and evaluate the industrial experiences and effectiveness of a Thyristor Controlled Series Compensator (TCSC) replica controller installed in Korea in 2019 through a review of its configuration, test platform, and practical application, and further to propose operational guidelines for replica controllers. Four representative practical cases were conducted: a Dynamic Performance Test (DPT) under a sufficiently large-scale power system prior to the Site Acceptance Test (SAT), pre-verification for on-site controller modification during operation stage, parameter tuning to mitigate the control interaction, and time domain simulation for Sub-Synchronous Torsional Interaction (SSTI). None of these four cases can be performed in a Factory Acceptance Test (FAT) or on-site. Therefore, TCSC control performance was accurately verified under the entire Korean power system based on a large-scale real-time simulator, which demonstrated its effectiveness as a powerful tool for operations including multiple power electronics devices. Our review herein of these four practical cases is expected to show the usefulness of replica controllers, to demonstrate their strength to deal with practical field events, and to contribute to the further expansion of the application area from a perspective of electric utility.
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공과대학 (전기전자공학부)
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