A method of predicting anomalous flashovers
- Central Research Inst. of Electric Power Industry, Komae, Tokyo (Japan)
When a long air gap or an insulator string is tested with a switching impulse voltage, flashovers sometimes occur at a gap which is longer than the test specimen. This phenomenon has been called anomalous flashover and the results of several experiments have been already reported. Although the mechanism of this anomalous flashover phenomena is important in coordinating insulation of high voltage transmission systems, especially for a UHV transmission system, almost no studies have been conducted on it. The authors analyze anomalous flashover phenomena statistically and propose a calculation method to predict the probability of anomalous flashovers occurs. This calculation method is then used to estimate the safety clearance needed for a UHV substation.
- OSTI ID:
- 136570
- Report Number(s):
- CONF-940702-; ISSN 0885-8977; TRN: IM9552%%112
- Journal Information:
- IEEE Transactions on Power Delivery, Vol. 10, Issue 3; Conference: 1994 Institute of Electrical and Electronic Engineers/Power Engineering Society (IEEE/PES) summer meeting, San Francisco, CA (United States), 24-28 Jul 1994; Other Information: PBD: Jul 1995
- Country of Publication:
- United States
- Language:
- English
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