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Autonomous classification of PD sources within three-phase 11 kV PILC cables

Autonomous classification of PD sources within three-phase 11 kV PILC cables
Autonomous classification of PD sources within three-phase 11 kV PILC cables
To allow utilities to fulfill self-imposed and regulative performance targets that apply to them, the demand for new tools to help judge the health of modern power distribution networks has increased. The analysis of partial discharge (PD) signals has been identified as a potential diagnostic tool for the condition monitoring of HV plant. In order to investigate the PD activity produced by a range of defects within three-phase paper insulated lead covered (PILC) distribution cable under rated conditions, an experiment has been developed. The experiment incorporates a commercially available on-line PD measurement system employing a high frequency current transformer (HFCT) to record PD data in a manner that is currently in operation in the UK. By replicating field conditions and using realistic hardware to collect experiment data, that any findings or analysis tools developed during this investigation are directly transferable to use in the field. Four defective cable samples, each containing different imperfections that are known to reduce in-service plant life have been fabricated and extensively PD tested. The raw experiment data was processed to produce a dataset containing a range of features from individual PD pulses including time, frequency and time-frequency information. This data was used to optimize and train several support vector machine (SVM) models to perform automated pulse classification. Four SVM models were tested using different combinations of pulse features to identify which characteristics were most effective at transferring source dependent information for classification. The results of the automated algorithm validated the approach returning a classification accuracy of 91.1%.
2117-2124
Hunter, J.A.
dae3e13b-a97e-4e81-a617-20ab6965da3c
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Hao, L.
7617ddd7-90e9-44b2-af12-717babd9c0ee
Walton, C.
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Michel, M.
560e6263-d080-4126-827a-8ad1b36764d4
Hunter, J.A.
dae3e13b-a97e-4e81-a617-20ab6965da3c
Lewin, P.L.
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Hao, L.
7617ddd7-90e9-44b2-af12-717babd9c0ee
Walton, C.
5b542bc7-7333-4e4a-9cf5-937fb449da66
Michel, M.
560e6263-d080-4126-827a-8ad1b36764d4

Hunter, J.A., Lewin, P.L., Hao, L., Walton, C. and Michel, M. (2013) Autonomous classification of PD sources within three-phase 11 kV PILC cables. IEEE Transactions on Dielectrics and Electrical Insulation, 20 (6), 2117-2124. (doi:10.1109/TDEI.2013.6678860).

Record type: Article

Abstract

To allow utilities to fulfill self-imposed and regulative performance targets that apply to them, the demand for new tools to help judge the health of modern power distribution networks has increased. The analysis of partial discharge (PD) signals has been identified as a potential diagnostic tool for the condition monitoring of HV plant. In order to investigate the PD activity produced by a range of defects within three-phase paper insulated lead covered (PILC) distribution cable under rated conditions, an experiment has been developed. The experiment incorporates a commercially available on-line PD measurement system employing a high frequency current transformer (HFCT) to record PD data in a manner that is currently in operation in the UK. By replicating field conditions and using realistic hardware to collect experiment data, that any findings or analysis tools developed during this investigation are directly transferable to use in the field. Four defective cable samples, each containing different imperfections that are known to reduce in-service plant life have been fabricated and extensively PD tested. The raw experiment data was processed to produce a dataset containing a range of features from individual PD pulses including time, frequency and time-frequency information. This data was used to optimize and train several support vector machine (SVM) models to perform automated pulse classification. Four SVM models were tested using different combinations of pulse features to identify which characteristics were most effective at transferring source dependent information for classification. The results of the automated algorithm validated the approach returning a classification accuracy of 91.1%.

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Published date: 1 December 2013
Organisations: EEE

Identifiers

Local EPrints ID: 360576
URI: http://eprints.soton.ac.uk/id/eprint/360576
PURE UUID: d7c6a739-8a06-4e4b-a97a-9dca864cffa6
ORCID for P.L. Lewin: ORCID iD orcid.org/0000-0002-3299-2556

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Date deposited: 02 Jan 2014 14:36
Last modified: 03 Dec 2021 02:35

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Contributors

Author: J.A. Hunter
Author: P.L. Lewin ORCID iD
Author: L. Hao
Author: C. Walton
Author: M. Michel

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