Operation and performance of a medium-voltage DC link

Aithal, Avinash and Wu, Jianzhong ORCID: https://orcid.org/0000-0001-7928-3602 2017. Operation and performance of a medium-voltage DC link. CIRED - Open Access Proceedings Journal 2017 (1) , pp. 1355-1358. 10.1049/oap-cired.2017.0946

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Abstract

The operation of a voltage source converter (VSC)-based medium-voltage (MV) direct current (DC) link is described. The use of a DC link in an MV distribution network is presented, considering salient similarities and differences to a high-voltage DC link. A PSCAD/EMTDC model was used to demonstrate the dynamic operation of an MVDC link, under normal and faulted network conditions. The study shows that MVDC can provide flexibility in a distribution network by decoupling real (P) and reactive (Q) power flows through the link, under normal operation. During a fault, however, the current injected from the converter could interfere with the detection and discrimination of AC system faults, in distribution networks with current-based protection scheme.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	IET
ISSN:	2515-0855
Last Modified:	25 Oct 2022 13:47
URI:	https://orca.cardiff.ac.uk/id/eprint/120770

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