A nonintrusive partial discharge measurement system based on RF technology

Author

Moore, P.J. ; Portugués, I. ; Glover, I.A.

Volume

2

fYear

2003

fDate

13-17 July 2003

Abstract

Conventional electrical measurements of PD are performed with detectors connected to the plant. This paper describes research conducted in conjunction with the National Grid Company and the radiocommunications agency for the radiometric detection of partial discharge sources via a novel noncontact digital method. The equipment uses an antenna sensor and reference voltage inputs which are directly sampled at 2.5 GHz. Results for hv laboratory tests involving air, SF6 and oil discharges are presented. The results include the waveform, average frequency spectrum and pulse count distribution. A proposal is made for the characterisation of the recorded impulses from these different breakdown effects based on analysis of the spectra and pulse count distributions.

Keywords

UHF detectors; high-frequency discharges; partial discharge measurement; radiometry; spectral analysis; 2.5 GHz; National Grid Company; RF technology; SF6 discharge; air discharge; antenna sensor; hv laboratory test; input reference voltage; oil discharge; partial discharge measurement system; partial discharge source; pulse count distribution; radiometric detection; spectra analysis; waveform frequency spectrum; Antenna measurements; Detectors; Electric variables measurement; Partial discharge measurement; Partial discharges; Performance evaluation; Radio frequency; Radiometry; Sensor phenomena and characterization; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Society General Meeting, 2003, IEEE

Print_ISBN

0-7803-7989-6

Type

conf

DOI

10.1109/PES.2003.1270372

Filename

1270372