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Abstract
Partial discharges (PDs) are symptomatic of some localised defects in the insulation system of electrical equipment. PD activity emits electrical pulses in the form of radio frequency (RF) signals which can be captured using appropriate sensors. The analysis of the measured RF signals facilitate localisation of PD. This paper investigates the plausibility of using purely RF received signal features of PD pulses to locate PD at low cost. A localisation approach based on the analysis of these features has been developed, with the assumption that PDs generate unique RF spatial patterns due to the complexities and nonlinearities of RF propagation. In this approach, two distinct frequency bands which hold different PD information are exploited. PD location features are extracted from the main PD signal and the two sub-band signals. Correlation based feature selection (CFS) is employed for feature selection and dimensionality reduction. Experimental results show that PD location can be inferred from the features of the PD pulses. The application of CFS to PD data reduces memory/computational demand and improves localisation accuracy.
Original language | English |
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Number of pages | 5 |
Journal | IET High Voltage |
Early online date | 27 Sept 2018 |
DOIs | |
Publication status | E-pub ahead of print - 27 Sept 2018 |
Keywords
- partial discharge
- radio frequency signals
- electrical insulation
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Projects
- 1 Finished
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Scalable Radiometric Wireless Sensor Network for Partial Discharge Monitoring in the Future Smart Grid
Atkinson, R. (Principal Investigator), Judd, M. (Co-investigator) & Soraghan, J. (Co-investigator)
EPSRC (Engineering and Physical Sciences Research Council)
3/04/13 → 1/04/18
Project: Research