Title :
Continuous on-line monitoring of partial discharges in high voltage cables
Author :
Tian, Y. ; Lewin, P.L. ; Wilkinson, J.S. ; Sutton, S.J. ; Swingler, S.G.
Author_Institution :
Tony Davies High Voltage Lab., Southampton Univ., UK
Abstract :
This work reviews data acquisition, transmission and processing methodologies for continuous on-line monitoring of partial discharges in power cable systems. A PD continuous online monitoring system for underground cable circuits using capacitive couplers, LiNbO3 electro-optic modulators, laser, optical switch and optical fibers has been proposed. Data processing methods include pulse shape and spectrum analysis, time of flight analysis, phase-resolved two-dimensional histograms, three-dimensional φ-q-n patterns, trend analysis, wavelet-based denoising, alarm strategy and telecommunication function to enable remote control and data download.
Keywords :
capacitors; data acquisition; lithium compounds; modulators; niobium compounds; optical fibres; optical switches; partial discharge measurement; power cables; time of flight spectra; underground cables; LiNbO3; alarm strategy; capacitive couplers; data acquisition; data download; data processing; electro-optic modulators; high voltage cables; laser switch; optical fibers; optical switch; partial discharge on-line monitoring; phase-resolved two-dimensional histograms; power cable systems; pulse shape analysis; remote control; spectrum analysis; three-dimensional φ-q-n patterns; time of flight analysis; underground cable circuits; wavelet-based denoising; Circuits; Data acquisition; Monitoring; Optical fiber cables; Optical fiber couplers; Partial discharges; Pattern analysis; Shape control; Underground power cables; Voltage;
Conference_Titel :
Electrical Insulation, 2004. Conference Record of the 2004 IEEE International Symposium on
Print_ISBN :
0-7803-8447-4
DOI :
10.1109/ELINSL.2004.1380640
