Development of a perfluorocarbon liquid immersed prototype large power transformer with compressed SF sub 6 insulation

Journal Article · Mon Jul 01 04:00:00 EDT 1991 · IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/61.85855· OSTI ID:5841665

Mukaryama, Y; Nonaka, F; Takagi, I ^[1]; Higaki, M; Endoo, K; Sakamoto, T; Hiraishi, K; Kawashima, K ^[2]

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1. Chubu Electric Power Co. Inc., Nagoya (Japan)
2. Hitachi Ltd., Hitachi (JP)

This paper reports on a prototype of three phase non-flammable, large power transformer that has been developed. It uses non-flammable perfluorocarbon liquid as both a coolant and an insulating material for windings, and compressed SF{sub 6} gas as the insulation from the outer windings to the tank. Using cooling and insulation models, the cooling and insulation characteristics of the disc windings were clarified. Stress analyses and the pressure tests of the transformer tank were carried out, to evaluate its mechanical characteristics. Finally, a prototype of 275kV 100MVA three phase transformer was developed, and its excellent performance was confirmed.

• OSTI ID: 5841665
• 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. 6:3; ISSN 0885-8977; ISSN ITPDE
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240100* -- Power Systems-- (1990-)
240200 -- Power System Networks
Transmission & Distribution-- (1990-)
240400 -- Power Transmission & Distribution-- Health & Safety-- (1990-)
COOLING
DESIGN
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATION
EQUIPMENT
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
PERFORMANCE TESTING
SAFETY
SILICON COMPOUNDS
SILICON FLUORIDES
SILICON HALIDES
STRESS ANALYSIS
TESTING
TRANSFORMERS
WIRES