Grid side unbalanced fault detection using soft open point in an electrical distribution network

Aithal, Avinash, Li, Gen ORCID: https://orcid.org/0000-0002-0649-9493 and Wu, Jianzhong ORCID: https://orcid.org/0000-0001-7928-3602 2017. Grid side unbalanced fault detection using soft open point in an electrical distribution network. Energy Procedia 105 , pp. 2859-2864. 10.1016/j.egypro.2017.03.631

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Abstract

Soft open point (SOP) is a power electronic device that installed in place of normally open points in distribution networks. This paper investigates the performance of SOP under an unbalanced line to ground (L-G) fault in a medium voltage (MV) distribution network. A method to detect unbalanced grid side AC faults was developed using positive and negative sequence currents injected into the feeder by the SOP. Simulations were carried out on a network model developed in PSCAD/EMTDC. Local measurements at SOP grid connection point were used to define a fault index. Results show that the fault index, based on the values of positive and negative sequence currents, is able to effectively detect the presence of an unbalanced fault in a MV distribution network.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	Elsevier
ISSN:	1876-6102
Date of First Compliant Deposit:	31 July 2018
Last Modified:	27 May 2023 00:53
URI:	https://orca.cardiff.ac.uk/id/eprint/113618

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