Tian, Y., Lewin, P.L., Wilkinson, J.S., Sutton, S.J. and Swingler, S.G.
Continuous online monitoring of partial discharges in high voltage cables.
2004 IEEE International Symposium on Electrical Insulation, . (doi:10.1109/ELINSL.2004.1380640).
This paper reviews data acquisition, transmission and processing methodologies for continuous online 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 (phi)-q-n patterns, trend analysis, wavelet-based denoising, alarm strategy and telecommunication function to enable remote control and data download.
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