Dielectric insulation characteristics of liquid-nitrogen-impregnated laminated paper-insulated cable

Journal Article · Thu Oct 01 04:00:00 EDT 1992 · IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/61.156965· OSTI ID:6932650

Suzuki, H; Ishihara, K; Akita, S ^[1]

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1. Central Research Inst. of Electric Power Industry, Yokosuka (Japan)

This paper reports that the electric characteristics and insulation design strength of a liquid-nitrogen-impregnated synthetic insulation was considered. It found to detect the impregnation of liquid nitrogen by measuring the electrostatic capacitance of the cable [epsilon] [center dot] tan [delta] an index of the dielectric loss, was 0.31% for cellulose paper and 0.18% for semisynthetic paper, PPLP and OPPL. It is found that the decline of the thickness dependence of the breakdown strength of the liquid-nitrogen-impregnated insulating cable is steeper than that of the OF cables. It is possible to design the insulation strength of the 66 kV cable to 10 kV/mm.

• OSTI ID: 6932650
• Journal Information: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States) Vol. 7:4; ISSN ITPDE5; ISSN 0885-8977
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240100 -- Power Systems-- (1990-)
240301* -- Power Transmission Lines & Cables-- Power Cables-- (1990-)
36 MATERIALS SCIENCE
360606 -- Other Materials-- Physical Properties-- (1992-)
CABLES
CONDUCTOR DEVICES
DEPOSITION
DESIGN
DIELECTRIC MATERIALS
DIELECTRIC PROPERTIES
ELECTRIC CABLES
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATION
ELECTRICAL PROPERTIES
ELECTROSTATICS
ELEMENTS
EQUIPMENT
GAS-INSULATED CABLES
MATERIALS
MATERIALS TESTING
NITROGEN
NONMETALS
PHYSICAL PROPERTIES
PLANNING
POWER SYSTEMS
SURFACE COATING
TESTING