Investigation of high-voltage particle-initiated breakdown in gas-insulated systems. Final report
An experimentl and theoretical study of the processes involved in electrical breakdown in compressed gases, where the breakdown is initiated by conducting particles is described. A great deal of detailed quantitative data is presented relating to particle-initiated breakdown in large coaxial and uniform electrode systems at voltages of several hundred kV. One finding of interest involves the demonstration that there is a critical particle-to-electrode spacing at the instant of breakdown in SF/sub 6/ at gas pressures typically used in practical power transmission equipment. The variation of this critical spacing with SF/sub 6/ gas pressure has been determined and the results are reported. The statistical nature of particle-initiated breakdown has also been studied and the effects of the presence of multiple particles and of the duration of application of voltage reported. Further results given include data for different gases and gas mixtures, particle sizes and materials, corona and wind effects, particle deformation, ac and impulse voltages, and other factors.
- Research Organization:
- Westinghouse Electric Corp., Pittsburgh, PA (United States). Research and Development Center
- DOE Contract Number:
- EX-76-C-01-2125
- OSTI ID:
- 6239733
- Report Number(s):
- EPRI-EL-1007
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AIR
BREAKDOWN
CARBON DIOXIDE
ELECTRICAL INSULATION
FREONS
GAS-INSULATED CABLES
NITROGEN
POWER SUBSTATIONS
SULFUR FLUORIDES
CORONA DISCHARGES
EHV AC SYSTEMS
EXPERIMENTAL DATA
GASES
GRAPHS
HVAC SYSTEMS
MEASURING METHODS
MIXTURES
PARTICLES
TABLES
UNDERGROUND POWER TRANSMISSION
AC SYSTEMS
CABLES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CONDUCTOR DEVICES
CRYOGENIC FLUIDS
DATA
DATA FORMS
DISPERSIONS
ELECTRIC CABLES
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
ELEMENTS
EQUIPMENT
FLUIDS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HALOGENATED ALIPHATIC HYDROCARBONS
INFORMATION
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POWER SYSTEMS
POWER TRANSMISSION
REFRIGERANTS
SULFUR COMPOUNDS
200301* - Power Transmission & Distribution- AC Systems
EHV & UHV- (-1989)