Open AccessDC–DC autotransformer with un‐interrupted operating capability during DC fault
Author(s) -
Li Mengbo,
Xiang Wang,
Zuo Wenping,
Yao Liangzhong,
Lin Weixing,
Wen Jinyu
Publication year - 2017
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2017.0535
Subject(s) - autotransformer , fault (geology) , computer science , blocking (statistics) , forward converter , electrical engineering , dc motor , engineering , voltage , boost converter , transformer , computer network , distribution transformer , seismology , geology
This study proposed a novel type of DC/DC converter, termed as un‐interrupted DC autotransformer (DC AUTO), which has capability to ride through various kinds of DC fault without blocking any devices. Firstly, the working principles and the corresponding design procedures of the un‐interrupted DC AUTO are illustrated. Then an effective control strategy is proposed to enable steady operation during both normal time and faulted condition. Finally, a 1000 MW ± 320 kV/ ± 640 kV test system is built on PSCAD/EMTDC platform to testify the technical feasibility of the proposed converter and the effectiveness of the proposed control strategy.