NDLI: Characterisation of partial discharge behaviour in liquid nitrogen

Content Provider	IEEE Xplore Digital Library
Author	Swaffield, D.J. Lewin, P.L. Tian, Y. Chen, G. Swingler, S.G.
Copyright Year	2004
Description	Author affiliation: Electron. & Comput. Sci., Southampton Univ., UK (Swaffield, D.J.; Lewin, P.L.; Tian, Y.; Chen, G.; Swingler, S.G.)
Abstract	Interest in superconductors for use in the transmission and distribution of power has grown since the advent of high temperature superconductors (HTS). The benefits of reduced ohmic losses leading to greater operational efficiency appear attractive to power transmission and distribution companies. Potentially this technology will increase power transfer for the same or lower voltage and for the same or smaller physical dimensions. For the successful employment of this technology in the field, power utilities must be convinced of the operational reliability of designs. Many of these designs make use of liquid nitrogen as the system coolant and also as a dielectric fluid. It is therefore vital that liquid nitrogen be well characterised as a dielectric medium. This work describes an experiment to characterise partial discharge behaviour in a nonuniform field geometry. A technique is described which allows synchronised capture and measurement of apparent charge and images of density change streamer activity. A /spl phi/qn analysis of AC results has been completed and characterisation of partial discharge behaviour is presented and discussed.
Starting Page	135
Ending Page	138
File Size	436624
Page Count	4
File Format	PDF
ISBN	0780384474
ISSN	1089084X
DOI	10.1109/ELINSL.2004.1380488
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-09-19
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Partial discharges Nitrogen High temperature superconductors Dielectric liquids Propagation losses Power transmission Voltage Employment Power system reliability Coolants
Content Type	Text
Resource Type	Article

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