Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
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Control of a VSC-HVDC Transmission System based on Modular Multilevel Converters

모듈형 멀티레벨 컨버터로 구성된 고압직류 송전시스템의 제어

  • Cui, Shenghui (Department of Electrical and Computer Engineering, Seoul National University) ;
  • Sul, Seung-Ki (Department of Electrical and Computer Engineering, Seoul National University)
  • 최성휘 (서울대학교 전기정보공학부) ;
  • 설승기 (서울대학교 전기정보공학부)
  • Published : 2014.07.01
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Abstract

VSC-HVDC system based on Modular Multilevel Converter (MMC) is an emerging technology since compared to the conventional VSC-HVDC system an MMC presents several advantages such as modularity, low dv/dt, low harmonics, and low switching losses. In this paper, a comprehensive control strategy of an MMC-based VSC-HVDC system is proposed. In contrast to the conventional system control strategy, the DC side of the MMC operates as a controlled voltage source by the proposed method, and the dynamics of the transmission line voltage and current can be actively controlled. Validity of the proposed strategy was verified by 201-level full-scale computer simulation.

Keywords