Radio Location of Partial Discharge Sources: A Support Vector Regression Approach

Ephraim Iorkyase, Christos Tachtatzis, Pavlos Lazaridis, Ian Glover, Robert Atkinson

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Partial discharge (PD) can provide a useful forewarning of asset failure in electricity substations. A significant proportion of assets are susceptible to PD due to incipient weakness in their dielectrics. This study examines a low cost approach for uninterrupted monitoring of PD using a network of inexpensive radio sensors to sample the spatial patterns of PD received signal strength. Machine learning techniques are proposed for localisation of PD sources. Specifically, two models based on support vector machines are developed: support vector regression (SVR) and least-squares support vector regression (LSSVR). These models construct an explicit regression surface in a high-dimensional feature space for function estimation. Their performance is compared with that of artificial neural network (ANN) models. The results show that both SVR and LSSVR methods are superior to ANNs in accuracy. LSSVR approach is particularly recommended as practical alternative for PD source localisation due to its low complexity.

Original languageEnglish
Pages (from-to)230-236
Number of pages7
JournalIET Science, Measurement and Technology
Volume12
Issue number2
Early online date27 Nov 2017
DOIs
Publication statusPublished - 19 Mar 2018

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