Calibration of free-space radiometric partial discharge measurements

Jaber, Adel A. and Lazaridis, Pavlos I. and Moradzadeh, Mohammad and Glover, Ian A. and Zaharis, Zaharias D. and Vieira, Maria F.Q. and Judd, Martin D. and Atkinson, Robert C. (2017) Calibration of free-space radiometric partial discharge measurements. IEEE Transactions on Dielectrics and Electrical Insulation, 24 (5). pp. 3004-3014. ISSN 1070-9878

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    The present study addresses the calibration of four types of partial discharge (PD) emulators used in the development of a PD Wireless Sensor Network (WSN). Three PD emulators have been constructed: a floating-electrode emulator, and two internal PD emulators. Both DC and AC high-voltage power supplies are used to initiate PD, which is measured using concurrent free-space radiometry (FSR) and a galvanic contact method based on the IEC 60270 standard. The emulators have been measured and simulated, and a good agreement has been found for the radiated fields. A new method of estimating the absolute PD activity level from radiometric measurements is proposed.