A study of circulating current in MMC based HVDC system under an unbalanced grid condition

Do, Won-Seok; Kim, Si-Hwan; Kim, Tae-Jin; Kim, Rae-Young

doi:10.1109/IECON.2014.7049125

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A study of circulating current in MMC based HVDC system under an unbalanced grid condition

Do, Won-Seok;
Kim, Si-Hwan;
Kim, Tae-Jin;
Kim, Rae-Young

Citations

SCOPUS

7

초록

This paper shows a study about circulating current of modular multilevel converter (MMC) based a high voltage direct current (HVDC) system under some unbalanced grid conditions. A basic structure of the MMC HVDC system is introduced and its system dynamics is analyzed. Based on the analysis, the modeling of circulating current and its control method under balanced or unbalanced grid condition are described. From the point of view in circulating current control, two kinds of power control methods are analyzed and their performances compared. In addition, in order to apply the power control methods, some practical considerations are proposed and described. Several simulation results performed in the PSIM software verify the proposed analysis and consideration of the power control methods under various grid conditions.

키워드

Circulating current; High voltage direct current (HVDC); Modular multilevel converter (MMC); Computer software; DC power transmission; Electric power system control; Industrial electronics; Power control; Power converters; Basic structure; Circulating current; Control methods; Grid conditions; High voltage direct current; HVDC systems; Modular multi-level converters; Unbalanced grid conditions; HVDC power transmission

제목: A study of circulating current in MMC based HVDC system under an unbalanced grid condition

저자: Do, Won-Seok; Kim, Si-Hwan; Kim, Tae-Jin; Kim, Rae-Young

DOI: 10.1109/IECON.2014.7049125

발행일: 2015-02

유형: Conference Paper

저널명: IECON Proceedings (Industrial Electronics Conference)

페이지: 4146 ~ 4152