Wireless sensor network for radiometric detection and assessment of partial discharge in HV equipment

Upton, D. W. and Saeed, B. I. and Mather, P. J. and Lazaridis, P. I. and Vieira, M. F. Q. and Atkinson, R. and Tachtatzis, C. and Garcia, M. S. and Judd, M. and Glover, I. A. (2018) Wireless sensor network for radiometric detection and assessment of partial discharge in HV equipment. Radio Science. ISSN 0048-6604 (https://doi.org/10.1002/2017RS006507)

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Abstract

Monitoring of PD activity within high-voltage electrical environments is increasingly used for the assessment of insulation condition. Traditional measurement techniques employ technologies that require either off-line installation or have high power consumption and are hence costly. A wireless sensor network is proposed that utilizes only received signal strength to locate areas of PD activity within a high voltage electricity substation. The network comprises low-power and low-cost radiometric sensor nodes which receive the radiation propagated from a source of PD. Results are reported from several empirical tests performed within a large indoor environment and a substation environment using a network of nine sensor nodes. A portable PD source emulator was placed at multiple locations within the network. Signal strength measured by the nodes is reported via WirelessHART to a data collection hub where it is processed using a location algorithm. The results obtained place the measured location within 2 m of the actual source location.

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