Voltage-Time Characteristics of Particle-Initiated Impulse Breakdown in SF6 and SF6-N2
- 1 May 1983
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Apparatus and Systems
- Vol. PAS-102 (5) , 1352-1360
- https://doi.org/10.1109/tpas.1983.318085
Abstract
The paper comprises a theoretical and experimental investigation into the impulse breakdown voltage-time characteristics of a spherical- particle-contaminated coaxial-cylinder gap in compressed SF6 and SF6-N2 mixture. The experimental work was carried out on a 25/70-mm diameter coaxial-cylinder gap with a 3.2-mm spherical particle attached to the high-voltage electrode, at a gas pressure of 0.3 MPa under 0.5/50-¿s and 1.2/50-¿s impulses of both polarities. Whenever possible the results were compared to those previously obtained on a clean system from which the particle effect on impulse breakdown voltage and delay time was identified.Keywords
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