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

The Journal of Engineering

Zhiyuan He²  Jiabing Hu³  Rong Zeng⁴ 

[1] Department of DC Power Transmission Technology, Smart Grid Research Institute, State Grid, Beijing 102200, People'Oak Ridge National Laboratory, Power Electronics and Electric Machine Group, TN, USA;State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China

关键词: HVDC systems;    MMC;    overhead transmission lines;    high-voltage direct current;    DC fault ride-through;    modular multilevel converter;   

DOI  :  10.1049/joe.2016.0195

学科分类：工程和技术（综合）

来源: IET

【 摘 要 】

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.

【 授权许可】

CC BY