NDLI: Measurements of temperature dependence of partial discharge in air gaps between insulated Bi-Sr-Ca-Cu-O tapes

Content Provider	IEEE Xplore Digital Library
Author	Grabovickic, R. James, D.R. Sauers, I. Ellis, A.R. Irwin, P.C. Weeber, K. Li, L. Gadre, A.D.
Copyright Year	2002
Abstract	Partial discharge (PD) in trapped air-filled gaps between two adjacent insulated high temperature superconducting (HTS) tapes made of Bi/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub x/ (BSCCO) was investigated experimentally. PD measurements were performed at several temperatures ranging from 295 K to 41 K. At each temperature a series of AC voltages of equal duration and increasing magnitude was applied to the inter-turn insulation until PD was initiated and observed on the insulation condition monitor ICM digital PD system. The PD data are presented in the form of phase and amplitude resolved PD (PRPD) patterns. The voltage at which PD initiation (PDIV) and extinction (PVEV) is observed at a particular temperature was measured on an oscilloscope. Experimentally obtained PDIV and PDEV values are compared with the Paschen curve values for air and the effect of temperature on PDIV is discussed. The data show that relatively low PD onsets can occur even when the insulation is cooled to the 40 to 50 K range which may be due to the presence of ice layers on the surface of the voids.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	3668
Ending Page	3671
Page Count	4
File Size	283748
File Format	PDF
ISSN	10518223
Volume Number	15
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Partial discharge measurement Temperature measurement Temperature dependence Partial discharges Air gaps Insulation High temperature superconductors Temperature distribution Voltage Superconducting films partial discharge BSCCO tapes cryogenic dielectrics cryogenic insulation
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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