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CLC number: TM75
On-line Access: 2007-12-20
Received: 2007-09-12
Revision Accepted: 2007-10-30
Crosschecked: 0000-00-00
Cited: 4
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Evaluating transmission towers potentials during ground faults
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Maria VINTAN. Evaluating transmission towers potentials during ground faults[J]. Journal of Zhejiang University Science A, 2008, 9(2): 182-189.
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publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A072206"
}
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DOI - 10.1631/jzus.A072206
Abstract: During ground faults on transmission lines, a number of towers near the fault are likely to acquire high potentials to ground. These tower voltages, if excessive, may present a hazard to humans and animals. This paper presents analytical methods in order to determine the transmission towers potentials during ground faults, for long and short lines. The author developed a global systematic approach to calculate these voltages, which are dependent of a number of factors. Some of the most important factors are: magnitudes of fault currents, fault location with respect to the line terminals, conductor arrangement on the tower and the location of the faulted phase, the ground resistance of the faulted tower, soil resistivity, number, material and size of ground wires. The effects of these factors on the faulted tower voltages have been also examined for different types of power lines.
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[8] Vintan, M., 2005. Potentials of the Transmission Towers during Ground Faults. Proc. 5th Int. Conf. on Electro-mechanical and Power Systems. Chisinau, Republic of Moldova, 2:1075-1077.
[9] Vintan, M., Buta, A., 2006. Ground fault current distribution on overhead transmission lines. Facta Universitatis (Nis), 19(1):71-84.
Open peer comments: Debate/Discuss/Question/Opinion
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abdolmajid fadaei@environmental health<ali2fadae@yahoo.com>
2012-01-17 00:31:20
i have this paper