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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

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Time-frequency modelling of partial discharge radiation from current transformers

Xiao, S. and Moore, P.J. and Judd, M.D. (2006) Time-frequency modelling of partial discharge radiation from current transformers. In: Proceedings of the 41st International Universities Power Engineering Conference, 2006. (UPEC '06). IEEE, pp. 921-925. ISBN 978-186135-342-9

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Abstract

The non-contact detection of partial discharge (PD) from substation equipment is an important aspect of condition monitoring and asset management. This paper describes research using the finite difference time domain (FDTD) technique and the numerical electromagnetic code (NEC) in both time and frequency domains to simulate PD effects in a high-voltage current transformer (CT). The FDTD technique is widely applicable to electromagnetic computation, which is used to model the partial discharge pulse and the simplified CT. The frequency response of this system is obtained by first modelling the current transformer into a simplified antenna structure, and then simulating this structure using the NEC Win Professional v1.1 antenna simulation software. This paper firstly identifies the optimum directions for remote reception of the radiated field, and secondly estimates the dominant frequencies of radiation in order to optimize future measurement systems.