Radiometric location of partial discharge sources on energized high-voltage plant

Moore, P.J. and Portugues, I. and Glover, I.A. (2005) Radiometric location of partial discharge sources on energized high-voltage plant. IEEE Transactions on Power Delivery, 20 (3). pp. 2264-2272. ISSN 0885-8977

Abstract

Partial discharges (PD) generate wideband radio frequency interference and, consequently, can be detected using radio receiving equipment. Due to the advances in ultra-high-speed sampling equipment, it is possible to accurately measure the propagation of the PD wavefront as it passes through a 4 element antenna array. From these measurements, the three-dimensional position of the PD source can be calculated using an iterative algorithm. The locating equipment is suitable for use within the vicinity of energized high-voltage plant and can locate sources up to 15 m from the array. Results are presented showing the location ability of the equipment under laboratory and field conditions. A significant advantage is the ability to detect PD sources in energized plant without the need for outages or electrical connections.

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