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Mathematical Problems in Engineering
Volume 2015, Article ID 502372, 11 pages
Research Article

Fault Characteristics and Control Strategies of Multiterminal High Voltage Direct Current Transmission Based on Modular Multilevel Converter

1School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
2School of Electrical Engineering, Tsinghua University, Beijing 100084, China

Received 22 April 2015; Revised 26 May 2015; Accepted 27 May 2015

Academic Editor: Xiaosong Hu

Copyright © 2015 Fei Chang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The modular multilevel converter (MMC) is an emerging voltage source converter topology suitable for multiterminal high voltage direct current transmission based on modular multilevel converter (MMC-MTDC). This paper presents fault characteristics of MMC-MTDC including submodule fault, DC line fault, and fault ride-through of wind farm integration. Meanwhile, the corresponding protection strategies are proposed. The correctness and effectiveness of the control strategies are verified by establishing a three-terminal MMC-MTDC system under the PSCAD/EMTDC electromagnetic transient simulation environment.