Start-up and shut-down strategies of hybrid LCC/VSC DC grids

Li, Gen ORCID: https://orcid.org/0000-0002-0649-9493, Liang, Jun ORCID: https://orcid.org/0000-0001-7511-449X, Joseph, Tibin ORCID: https://orcid.org/0000-0003-4647-1118, An, Ting, Szechtman, Marcio, Andersen, Bjarne and Zhuang, Qikai 2018. Start-up and shut-down strategies of hybrid LCC/VSC DC grids. Presented at: 2nd IEEE Conference on Energy Internet and Energy System Integration (EI2), Beijing, China, 20-22 Oct 2018. 2018 2nd IEEE Conference on Energy Internet and Energy System Integration (EI2). IEEE, 10.1109/EI2.2018.8582543

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Abstract

The line commutated converter based high-voltage direct-current (LCC-HVDC) technology has been widely used for transferring bulk power over long distances in the past decades. In recent years, the voltage level and power capacity of voltage source converter (VSC) based HVDC technology have experienced a great development which provides a possibility of building hybrid LCC/VSC dc systems. In this paper, a four-terminal hybrid LCC/VSC dc grid with two LCCs as the rectifiers and two VSCs as the inverters is proposed. The start-up and shut-down control strategies of this hybrid systems have been proposed with the consideration of the inherent characteristics of the two technologies. The proposed strategies can mitigate the voltage spikes and current surges during the start-up and shut-down processes. The proposed dc grid model and control strategies are developed and validated in PSCAD/EMTDC.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	IEEE
ISBN:	978-1-5386-8549-5
Last Modified:	11 Mar 2023 02:54
URI:	https://orca.cardiff.ac.uk/id/eprint/121140

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