Transformer-less unified power flow controller in medium voltage distribution networks

Abdelrahman, Mohamed A., Wang, Sheng ORCID: https://orcid.org/0000-0002-2258-2633, Ming, Wenlong ORCID: https://orcid.org/0000-0003-1780-7292, Wu, Jianzhong ORCID: https://orcid.org/0000-0001-7928-3602 and Jenkins, Nick ORCID: https://orcid.org/0000-0003-3082-6260 2023. Transformer-less unified power flow controller in medium voltage distribution networks. IET Generation, Transmission and Distribution 17 (6) , pp. 1243-1255. 10.1049/gtd2.12730

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Abstract

A Transformer-less Unified Power Flow Controller (UPFC) is a power electronic device consisting of series and shunt voltage source converters (VSCs) that are not connected to a common DC bus. It can control power flow in medium voltage (MV) distribution networks without the need for interfacing transformers. Hence there is a significant reduction in size and cost compared to a conventional UPFC. This paper investigates the operating range of a Transformer-less UPFC in an MV distribution network and the required power ratings of the series and shunt converters. The results showed that a Transformer-less UPFC is able to provide active power control using partially rated converters. However, its ability to control reactive power is limited by the current ratings of the converters. The analysis was verified using software simulation and hardware experiment.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Publisher:	Institution of Engineering and Technology (IET)
ISSN:	1751-8695
Funders:	EPSRC
Date of First Compliant Deposit:	24 February 2023
Date of Acceptance:	8 December 2022
Last Modified:	20 Jun 2023 18:15
URI:	https://orca.cardiff.ac.uk/id/eprint/154959

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