NDLI: Comparison Between PD Inception Voltage and BD Voltage of PPLP in <formula formulatype=inline><tex Notation=TeX>$hbox{LN}_{2}$</tex></formula> Considering HTS Cable Insulation

Content Provider	IEEE Xplore Digital Library
Author	Bang-Wook Lee Won Choi Young-Min Choi Yong-Han Kim Ja-Yoon Koo
Copyright Year	2002
Abstract	With the rapid development of world economics, demand for electricity in metropolitan areas has increased dramatically. The high-temperature superconductivity (HTS) cable is one of the most promising technologies for solving the bottleneck of the transmission system. However, power system planners have not yet considered the HTS cable as a mature technology due to its weak insulation characteristics with respect to those of conventional power cables. The electrical insulation design is one of the major issues for HTS cable. It is evident that the insulation in the dc cable should be investigated further at this time. For the insulation design of the HTS cable, it is necessary to investigate the breakdown (BD) characteristics and the partial discharge (PD) inception voltage of the liquid nitrogen (LN₂)/polypropylene laminated paper (PPLP) composite insulation system. In this paper, BD voltage and PD inception voltage of PPLP immersed in LN₂ was compared under ac and dc stresses. Various kinds of PPLP specimens considering the different layers and the butt gaps were prepared. The PD inception voltage was measured in a shield room according to IEC 60270. Consequently, it was investigated that characteristics of the PD inception voltage and the BD voltage was rather different when ac and dc voltages were respectively applied in LN₂, and these results could be used for the insulation design of ac and dc HTS cables.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	5402104
Ending Page	5402104
Page Count	1
File Size	515107
File Format	PDF
ISSN	10518223
Volume Number	23
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Superconducting cables Insulation Power cables High temperature superconductors Stress Partial discharges polypropylene laminated paper (PPLP) AC breakdown characteristic butt gap dc high-temperature superconductivity (HTS) cable inception voltage partial discharge
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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