Design and operation of hybrid multi-terminal soft open points using feeder selector switches for flexible distribution system interconnection

Deakin, Matthew, Taylor, Phil C., Bialek, Janusz and Ming, Wenlong ORCID: https://orcid.org/0000-0003-1780-7292 2022. Design and operation of hybrid multi-terminal soft open points using feeder selector switches for flexible distribution system interconnection. Electric Power Systems Research 212 , 108516. 10.1016/j.epsr.2022.108516

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Abstract

Distribution systems will require new cost-effective solutions to provide network capacity and increased flexibility to accommodate Low Carbon Technologies. To address this need, we propose the Hybrid Multi-Terminal Soft Open Point (Hybrid MT-SOP) to efficiently provide distribution system interconnection capacity. Each leg of the Hybrid MT-SOP has an AC/DC converter connected in series with a bank of AC switches (Feeder Selector Switches) to allow the converter to connect to any of the feeders at a node. Asymmetric converter sizing is shown to increase feasible power transfers by up to 50% in the three-terminal case, whilst a conic mixed-integer program is formulated to optimally select the device configuration and power transfers. A case study shows the Hybrid MT-SOP increasing utilization of the converters by more than one third, with a 13% increase in system loss reduction as compared to an equally-sized MT-SOP.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	Elsevier
ISSN:	0378-7796
Date of Acceptance:	2 July 2022
Last Modified:	11 Nov 2022 08:57
URI:	https://orca.cardiff.ac.uk/id/eprint/152355

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