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Proceedings 2017, 1(2), 12; doi:10.3390/ecsa-3-E003

The Influence of Antenna Positioning Errors on the Radio-Frequency Localization of Partial Discharge Sources

1
Department of Electrical Engineering, Universidad Carlos III de Madrid, Avda. Universidad, 30, Leganés 28911, Spain
2
Department of Electronic and Electrical Engineering, University of Strathclyde, 204 George Street, Glasgow G1 1XW, UK
Presented at the 3rd International Electronic Conference on Sensors and Applications, 15–30 November 2016; Available online: https://sciforum.net/conference/ecsa-3.
*
Author to whom correspondence should be addressed.
Published: 14 November 2016
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Abstract

Electrical insulation can have imperfections due to manufacturing or ageing. When the insulation is electrically stressed, partial discharge (PD) pulses, with very fast rise-times and short-time durations, may occur. One of the consequences of charges being accelerated within the discharge is the emission of electromagnetic energy. The measurement of these emissions is widely used to identify defective insulation within high voltage equipment and help in predictive and planned maintenance in order to prevent sudden failure. The location of the source of the radiated PD signals may be determined using multi-lateration techniques using an array of at least four antennas. Depending on the relative position between the antennas and the PD source, the pulsed emissions from the PD source arrive at each antenna at different times. The relative time differences of arrivals (TDOA) together with the antenna positions are variables used to locate the PD source in 3D space. This paper investigates the accuracy of the location determination of the source as a consequence of systematic errors on the positioning of the antennas. These errors are analyzed for three different antenna array configurations and for different vector directions from the arrays. Additionally, the least sensitive layout in relation to antenna positioning errors is proposed to assist in improving the location accuracy of PD sources.
Keywords: radio-frequency localization; partial discharges; antenna positioning; measurement errors radio-frequency localization; partial discharges; antenna positioning; measurement errors
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Fresno, J.M.; Robles, G.; Stewart, B.G.; Martínez-Tarifa, J.M. The Influence of Antenna Positioning Errors on the Radio-Frequency Localization of Partial Discharge Sources. Proceedings 2017, 1, 12.

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