Leader Progression Analysis Model for Shielding Failure Computation by Using the Charge Simulation Method
| Autor: | M.R.B. Tavakoli, M. Yahyaabadi, Behrooz Vahidi, Seyed Mohammad Ahadi |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Engineering
business.industry Computation Mode (statistics) Energy Engineering and Power Technology Structural engineering Lightning Electric power transmission Transmission line Electromagnetic shielding Arc flash Electronic engineering Electrical and Electronic Engineering business Power-system protection |
| Zdroj: | IEEE Transactions on Power Delivery. 23:2201-2206 |
| ISSN: | 0885-8977 |
| DOI: | 10.1109/tpwrd.2008.2002850 |
| Popis: | Shielding failure has long been recognized as a possible mode of lightning flashover. This paper reports the development of a method for estimating the shielding failure number of transmission lines using the charge simulation method. The effects of towers, sags of conductors, and a perfectly conducting ground are represented in 3-D computation. In addition, the stepwise descending nature of a downward negative leader-streamer system is taken into account by using an appropriate progression model. Upward leader inception and propagation is also modeled utilizing critical equivalent streamer-length criterion as well as Rizk's formula. The results of the comparison between traditional and proposed techniques with different criteria are also presented. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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