Rain and contamination tests on HVDC wall bushings with and without RTV coatings

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

DOI:https://doi.org/10.1109/61.85878· OSTI ID:5852946

Schneider, H M ^[1]; Hall, J F ^[2]; Nellis, C L ^[3]; Low, S S ^[4]; Lorden, D J ^[5]

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1. EPRI High Voltage Transmission Research Center, Lenox, MA (US)
2. Electric Power Research Inst., Palo Alto, CA (United States)
3. Bonneville Power Administration, Portland, OR (United States)
4. Los Angeles Dept. of Water and Power, Los Angeles, CA (US)
5. New England Power Service Co., Westborough, MA (United States)

In this paper results of tests made to determine the ability of room temperature vulcanized (RTV) silicone rubber coatings to improve the performance of HVDC wall bushings are described. The behavior of uncoated full scale {plus minus} 500 kV wall bushings is first determined in wetting conditions consisting of nonuniform rain and fog with various amounts of pre-deposited surface contamination. Parameters affecting flashover performance, such as polarity, rain conductivity, and contamination severity are discussed. Results of nonuniform rain tests on an RTV coated wall bushing are reported.

• OSTI ID: 5852946
• 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-)
240202 -- Power System Networks
Transmission & Distribution-- DC Systems-- (1990-)
240500* -- Power Transmission & Distribution-- Environmental Aspects-- (1990-)
ATMOSPHERIC PRECIPITATIONS
COATINGS
CURRENTS
DC SYSTEMS
DESIGN
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTRICAL INSULATION
ENVIRONMENTAL IMPACTS
FLASHOVER
FOG
HVDC SYSTEMS
MATERIALS TESTING
ORGANIC COMPOUNDS
ORGANIC SILICON COMPOUNDS
PERFORMANCE TESTING
PLANNING
POLYMERS
POWER SYSTEMS
PROTECTIVE COATINGS
RAIN
SILICONES
SILOXANES
TESTING