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Study on Optimized Scheme of Reactive Power Compensation for Low Short-Circuit-Ratio HVDC System  

Baek Seung-Taek (명지대 차세대전력기술연구센터)
Han Byung-Moon (명지대 공대 전기공학과)
Oh Sea-Seung (고려대 공대 전기공학과)
Jang Gil-Soo (고려대 공대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers A / v.54, no.9, 2005 , pp. 434-440 More about this Journal
Abstract
This paper describes an optimized Scheme of reactive-power compensation for the low short-circuit-ratio AC system interconnected with the HVDC system. An HVDC system interconnected with tile low SCR AC system is vulnerable to the ac voltage variation, which brings about the commutation failure of the converter. This problem can be solved using optimized compensation of reactive power. In this study, a benchmark system for HVDC system interconnected with low SCR AC system is derived using PSS/E simulation. Then an optimized srheme for reactive power compensation was derived using integer programming. The feasibility of proposed scheme was analyzed through silnulations with PSS/E and PSCAD/EMTDC. The proposed scheme can compensate the reactive power accurately and minimize the number of switching for harmonic filters and shunt reactors.
Keywords
HVDC; PSS/E; PSCAD/EMTDC; SCR(Short Circuit Ratio);
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