Composite rod insulators for ac power lines; Electrical performance of various designs at a coastal testing station

Journal Article · Mon Oct 01 00:00:00 EDT 1990 · IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (USA)

DOI:https://doi.org/10.1109/61.103691· OSTI ID:6343186

Houlgate, R G; Swift, D A ^[1]

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1. Central Electricity Research Labs., Leatherhead (UK)

The electrical performance of thirty-six composite insulators - of four commercial types for each AC system level of 34.5 kV, 230 kV and 500 kV - has been determined at the CEGB insulator testing station, Brighton, England. The weathershed materials were epoxy-resin, ethylene propylene rubber and silicone rubber; half of the 230 kV insulators had no stress rings. Surface leakage current was recorded for surge levels of 25 mA, 150 mA and 500 mA; a special technique was developed to obtain the flashover statistics of the 500 kV insulators, thereby enabling performance of the composite insulator to be quantified relative to that of a string of cap and pin porcelain insulators of anti-fog design, the deterioration of the insulators was observed by making regular visual inspections. The practical consequences of the findings and the causes of the degradation are discussed.

• OSTI ID: 6343186
• Journal Information: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (USA), Vol. 5:4; ISSN 0885-8977
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
36 MATERIALS SCIENCE
AC SYSTEMS
ELECTRICAL INSULATORS
COMPOSITE MATERIALS
ELECTRIC CONDUCTIVITY
MATERIALS TESTING
LIGHTNING
ENVIRONMENTAL IMPACTS
DESIGN
PLANNING
RESINS
SILICON
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ELEMENTS
ENERGY SYSTEMS
EQUIPMENT
MATERIALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
POLYMERS
POWER SYSTEMS
SEMIMETALS
TESTING
240201* - Power System Networks
Transmission & Distribution- AC Systems- (1990-)
360603 - Materials- Properties
240500 - Power Transmission & Distribution- Environmental Aspects- (1990-)
240100 - Power Systems- (1990-)