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Title: Non-Uniform Field Breakdown and Surface Flashover in Liquid Nitrogen Gaps for HTS Applications

Abstract

Abstract: Liquid nitrogen (LN2) is used as a coolant and electrical insulation in many High Temperature Superconducting (HTS) applications. Hence a good understanding of the breakdown characteristics of this medium under a variety of practical electrode geometries and conditions is needed for design of high voltage equipment. While there is considerable literature on breakdown of LN2 gaps for uniform (plane-plane) or quasi-uniform electric fields (sphere-plane), there is much less data available for highly non-uniform field gaps and for surface flashover along insulators. In this paper we present results on sphere-plane and cylindrical rod-plane gaps in LN2 as a function of sphere and rod diameters and radius of the rod edge at 1 bar pressure. In addition the surface flashover voltages of Fiber-Reinforced Plastic (FRP) in LN2 with these electrode arrangements will also be reported.

Authors:
 [1];  [1];  [1];  [1];  [2];  [3]
  1. ORNL
  2. Consultant, SuperPower, Inc.
  3. SuperPower Incorporated, Schenectady, New York
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
OE USDOE - Office of Electric Transmission and Distribution
OSTI Identifier:
931691
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: 2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Kansas City, MO, USA, 20061015, 20061018
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BREAKDOWN; COOLANTS; DESIGN; DIELECTRIC MATERIALS; ELECTRIC FIELDS; ELECTRICAL INSULATION; ELECTRODES; FLASHOVER; NITROGEN; PLASTICS; cryogenic dielectrics; surface flashover; breakdown voltage; liquid nitrogen; fiberglass reinforced plastic

Citation Formats

James, David Randy, Sauers, Isidor, Tuncer, Enis, Ellis, Alvin R, Tekletsadik, Kasegn, and Hazelton, Drew. Non-Uniform Field Breakdown and Surface Flashover in Liquid Nitrogen Gaps for HTS Applications. United States: N. p., 2006. Web.
James, David Randy, Sauers, Isidor, Tuncer, Enis, Ellis, Alvin R, Tekletsadik, Kasegn, & Hazelton, Drew. Non-Uniform Field Breakdown and Surface Flashover in Liquid Nitrogen Gaps for HTS Applications. United States.
James, David Randy, Sauers, Isidor, Tuncer, Enis, Ellis, Alvin R, Tekletsadik, Kasegn, and Hazelton, Drew. Sun . "Non-Uniform Field Breakdown and Surface Flashover in Liquid Nitrogen Gaps for HTS Applications". United States. doi:.
@article{osti_931691,
title = {Non-Uniform Field Breakdown and Surface Flashover in Liquid Nitrogen Gaps for HTS Applications},
author = {James, David Randy and Sauers, Isidor and Tuncer, Enis and Ellis, Alvin R and Tekletsadik, Kasegn and Hazelton, Drew},
abstractNote = {Abstract: Liquid nitrogen (LN2) is used as a coolant and electrical insulation in many High Temperature Superconducting (HTS) applications. Hence a good understanding of the breakdown characteristics of this medium under a variety of practical electrode geometries and conditions is needed for design of high voltage equipment. While there is considerable literature on breakdown of LN2 gaps for uniform (plane-plane) or quasi-uniform electric fields (sphere-plane), there is much less data available for highly non-uniform field gaps and for surface flashover along insulators. In this paper we present results on sphere-plane and cylindrical rod-plane gaps in LN2 as a function of sphere and rod diameters and radius of the rod edge at 1 bar pressure. In addition the surface flashover voltages of Fiber-Reinforced Plastic (FRP) in LN2 with these electrode arrangements will also be reported.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}

Conference:
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