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Lumped Parameter Model for High Frequency Partial Discharge Estimation in High Voltage Transformer

Lumped Parameter Model for High Frequency Partial Discharge Estimation in High Voltage Transformer
Lumped Parameter Model for High Frequency Partial Discharge Estimation in High Voltage Transformer
The lumped parameter model is well known in solving high frequency signal propagation in high voltage transformer windings. At the University of Southampton, a modelling technique has been developed and employed to locate partial discharges (PD) that occur inside transformer windings. Firstly, a lumped capacitive parameter model was considered and secondly a transmission line lumped parameter approach developed. A technique of split winding analysis is introduced for both types of model. The derivation of the capacitive network considers the source location of a PD by defining the PD signal propagation in two directions. At the source, the currents are equal in magnitude and are attenuated as they flow in each direction. This provides information for a fixed distribution model equation. Under transmission line lumped parameter models, split winding analysis explains the development of accumulated harmonic waveforms of the PD propagation signal towards the neutral and bushing tappoint. Results indicate that this approach can also estimate the magnitude of PDs that occur within transformer windings.
978-1-61804-041-1
223-228
Mohamed, R
541bddba-9997-4f3f-a82a-3e055c173974
Lewin, P L
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Mohamed, R
541bddba-9997-4f3f-a82a-3e055c173974
Lewin, P L
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e

Mohamed, R and Lewin, P L (2011) Lumped Parameter Model for High Frequency Partial Discharge Estimation in High Voltage Transformer. Recent Research in Power Systems and Systems Science, Penang, Malaysia. 02 - 04 Oct 2011. pp. 223-228 .

Record type: Conference or Workshop Item (Paper)

Abstract

The lumped parameter model is well known in solving high frequency signal propagation in high voltage transformer windings. At the University of Southampton, a modelling technique has been developed and employed to locate partial discharges (PD) that occur inside transformer windings. Firstly, a lumped capacitive parameter model was considered and secondly a transmission line lumped parameter approach developed. A technique of split winding analysis is introduced for both types of model. The derivation of the capacitive network considers the source location of a PD by defining the PD signal propagation in two directions. At the source, the currents are equal in magnitude and are attenuated as they flow in each direction. This provides information for a fixed distribution model equation. Under transmission line lumped parameter models, split winding analysis explains the development of accumulated harmonic waveforms of the PD propagation signal towards the neutral and bushing tappoint. Results indicate that this approach can also estimate the magnitude of PDs that occur within transformer windings.

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More information

Published date: 3 October 2011
Additional Information: Event Dates: 3-5 October 2011
Venue - Dates: Recent Research in Power Systems and Systems Science, Penang, Malaysia, 2011-10-02 - 2011-10-04
Organisations: Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 272991
URI: http://eprints.soton.ac.uk/id/eprint/272991
ISBN: 978-1-61804-041-1
PURE UUID: 045e75ff-21ca-4a17-b39e-f0b249a596dd
ORCID for P L Lewin: ORCID iD orcid.org/0000-0002-3299-2556

Catalogue record

Date deposited: 10 Nov 2011 11:45
Last modified: 03 Dec 2021 02:35

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Contributors

Author: R Mohamed
Author: P L Lewin ORCID iD

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