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Submodule configuration of HVDC-DC auto transformer considering DC fault

Suo, Zhiwen and Li, Gengyin and Li, Rui and Xu, Lie and Wang, Weisheng and Chi, Yongning and Sun, Wei (2016) Submodule configuration of HVDC-DC auto transformer considering DC fault. IET Power Electronics. pp. 1-24. ISSN 1755-4535 (In Press)

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Abstract

This paper studies the submodule configuration of MMC based non-isolated HVDC-DC autotransformer (HVDC-AT) with DC fault blocking capability, including two-terminal and multi-terminal topologies. The operation principle of the HVDC-AT is described. Considering the arm current differences, the total number of required semiconductors for the HVDC-AT is derived and is compared with the MMC based isolated front-to-front (F2F) DC transformer. A full operation process for the multi-terminal HVDC-AT considering DC fault is then presented, including normal operation, fault isolation and continuous operation of healthy converters after fault. The submodule configuration and fault recovery of the multi-terminal HVDC-AT are validated by simulations using PSCAD/EMTDC.

Item type: Article
ID code: 57504
Keywords: renewable energy, HVDC technology, offshore wind power, modular multilevel converter, Electrical engineering. Electronics Nuclear engineering, Environmental engineering, Renewable Energy, Sustainability and the Environment, Energy Engineering and Power Technology
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Technology > Engineering (General). Civil engineering (General) > Environmental engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Depositing user: Pure Administrator
Date deposited: 23 Aug 2016 08:49
Last modified: 22 Sep 2017 07:12
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URI: https://strathprints.strath.ac.uk/id/eprint/57504
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