Title :
Measurement of arc resistance and dielectric breakdown voltage at intermittent grounding of 6.6 kV distribution CVT cable
Author :
Ohnishi, H. ; Urano, Humihiro ; Hasegawa, Shun ; Morita, Tadashi ; Nakajima, Masatoshi
Author_Institution :
Tokyo Electr. Power Co. Inc., Japan
fDate :
1/1/1988 12:00:00 AM
Abstract :
Overvoltage in power distribution system due to intermittent ground faults was studied by measuring dielectric voltage and resistance. The dielectric breakdown voltage was low at the initial stage of the ground fault, became higher than the system voltage with time, and decreased to a lower value. The arc resistance of the fault point was almost 10 Ω. Agreement between these and calculated results are obtained
Keywords :
distribution networks; earthing; electric breakdown; fault currents; power cables; 6.6 kV; arc resistance measurement; dielectric breakdown voltage; dielectric voltage measurement; distribution CVT cable; intermittent ground faults; power distribution system; Breakdown voltage; Circuit faults; Circuit testing; Dielectric breakdown; Dielectric measurements; Electrical resistance measurement; Grounding; Low voltage; Performance analysis; Power cables; Power distribution; Power measurement; Voltage control; Voltage measurement;
Journal_Title :
Power Delivery, IEEE Transactions on
