DC fault ride-through of MMCs for HVDC systems: a review

Jiabing Hu; Rong Zeng; Zhiyuan He

DC fault ride-through of MMCs for HVDC systems: a review

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Author(s): Jiabing Hu¹ ; Rong Zeng² ; Zhiyuan He³
- Affiliations: 1: State Key Laboratory of Advanced Electromagnetic Engineering and Technology , Huazhong University of Science and Technology , Wuhan 430074 , People's Republic of China ;
  2: Oak Ridge National Laboratory , Power Electronics and Electric Machine Group , TN , USA ;
  3: Department of DC Power Transmission Technology , Smart Grid Research Institute, State Grid , Beijing 102200 , People's Republic of China
Source: Volume 2016, Issue 9, September 2016, p. 321 – 331
DOI: 10.1049/joe.2016.0195 , Online ISSN 2051-3305

This is an open access article published by the IET under the Creative Commons Attribution-NonCommercial-NoDerivs License (http://creativecommons.org/licenses/by-nc-nd/3.0/)

Received 27/06/2016, Accepted 25/07/2016, Published 04/08/2016

As the increasing penetration of modular multilevel converter (MMC)-based high-voltage direct current (HVDC) into bulky power transmission systems, the performance of MMC on dealing with DC faults, especially on temporary DC fault in overhead transmission lines, has been becoming more and more significant. A comprehensive overview of MMC on DC fault ride-through (FRT) capability is discussed. Compared with DC fault blocking capability considered as a passive DC FRT strategy focusing on isolating DC fault from AC sides, the DC FRT capability emphasises remaining converters continuous operating during DC faults to regulate and support the connected AC grids. The principle and prerequisite of MMC on DC FRT are analysed, and then improved MMC topologies with DC fault handling capability are summarised and a corresponding comparison among them is conducted. Finally, applications of MMC with DC FRT capability on HVDC systems and its relative control strategies are presented.

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DC fault ride-through of MMCs for HVDC systems: a review

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