Open AccessDC fault ride‐through of MMCs for HVDC systems: a review
Author(s) -
Hu Jiabing,
Zeng Rong,
He Zhiyuan
Publication year - 2016
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2016.0195
Subject(s) - converters , modular design , fault (geology) , high voltage direct current , direct current , transmission system , computer science , electrical engineering , overhead (engineering) , voltage , electric power system , electronic engineering , engineering , power (physics) , transmission (telecommunications) , physics , quantum mechanics , seismology , geology , operating system
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.