A model for switching impulse leader inception and breakdown of long air-gaps
The paper introduces a new mathematical model for continuous leader inception and breakdown of long air gaps under positive switching impulses with critical time-to-crest. The model deals with rod-, sphere- and conductor-plane gaps. It provides novel analytical expressions for continuous leader inception voltage, height of the final jump and breakdown voltage as well as analytical tools to determine the critical electrode radius for any gap spacing. The theory is extensively compared with previous experimental results and is tested against several formerly developed empirical formulae, relevant to several formerly developed empirical formulae, relevant to several discharge parameters, for different electrode forms and over a wide range of gap spacings.
- Research Organization:
- Institut de recherche d'Hydro-Quebec (IREQ) 1800 montee Ste-Julie, Varennes, Quebec, JOL 2PO (CA)
- OSTI ID:
- 6429400
- Journal Information:
- IEEE Trans. Power Del.; (United States), Vol. 4:1
- Country of Publication:
- United States
- Language:
- English
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