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VSI FACTS Modeling Using Newton-Type Current Injection Method for Studying Power System Dynamics  

Park, Jung-Soo (고려대 공대 전기공학과)
Son, Kwang-M. (동의대 공대 전기공학과)
Jang, Gil-Soo (고려대 공대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers A / v.55, no.7, 2006 , pp. 281-289 More about this Journal
Abstract
Advanced controllers among Flexible AC Transmission System(FACTS) devices employ self-commutated switching converters, VSI (Voltage Sourced Inverters), as the synchronous voltage source. Such controllers are SSSC (Static Synchronous Series Compensator), STATCOM (Static Synchronous Compensator) and UPFC (Unified Power Flow Controller). UPFC is series-shunt combined controller. Its series and shunt inverters can be modeled as SSSC and STATCOM but the dependant relation between the inverters is very complex. For that reason, the complexity makes it difficult to develop the UPFC model by simply combining the SSSC and STATOM models when we apply the model for conventional power system dynamic simulation algorithm. Therefore, we need each relevant models of VSI type FACTS devices for power system analysis. This paper proposes a modeling approach which can be applied to modeling of VSI type FACTS devices. The proposed method using Newton-type current injection method can be used to make UPFC, SSSC, and STATCOM models. The proposed models are used for 2-area test system simulation, and the results verify their effectiveness.
Keywords
FACTS Modeling; SSSC; STATCOM; UPFC; Power System Dynamic Stability;
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