Improved methods for UHF localization of partial discharge in air-insulated substations

Rashwan, Ahmed and Reid, Alistair ORCID: https://orcid.org/0000-0003-3058-9007 2023. Improved methods for UHF localization of partial discharge in air-insulated substations. Energies 16 (10) , 4221. 10.3390/en16104221

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Abstract

A time-difference-of-arrival-based partial discharge (PD) location system that utilises prior knowledge of substation layout is presented. We propose a new time delay estimator that employs onset detection techniques and demonstrate, through experimental results, that it is at least 2.8 times more accurate than other conventional estimators. Using knowledge of a substation’s layout, we develop a minimum mean-square-error (MMSE)-based location estimator and an algorithm that optimises antenna placement to maximise location accuracy in regions occupied by high-voltage equipment. Simulation results show that a system that uses the proposed techniques is 5.9 times more accurate than a more conventional system in a high-noise environment.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	MDPI
ISSN:	1996-1073
Date of First Compliant Deposit:	22 May 2023
Date of Acceptance:	18 May 2023
Last Modified:	10 Feb 2024 02:30
URI:	https://orca.cardiff.ac.uk/id/eprint/159800

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