Abstract
This work studies in a deterministic point of view a lightning discharges that strikes directly the transmission line tower top. The calculation methods of this kind of surges: the method of successive reflections introduced by Jordan and the method of field well as compared with these purpose. Based on this two approaches a computational program is developed to calculate the overvoltage on the insulator string and the required parameters. Based on the results of this analysis, the simplest and most efficient method is chosen and where a simple sensitivity analysis is made for the following parameters: the impedance of lightning stroke channel, the tower foot impedance, time to crest of stroke shape function and tower surge impedance. This analysis is performed in order to verify the voltage variation on the insulator string. Finally, the last parameter, the tower surge impedance is emphasized comparing its calculated values with the measured values by geometrical model technique. (author)
Citation Formats
Godoy, Antonio Varejao de.
Overvoltage in chain of insulators front to lightning discharges: a comparative study of the calculation methods and of the parameter Z{sub t}; Sobretensoes em cadeia de isoladores frente a descargas atmosfericas: um estudo comparativo dos metodos de calculo e do parametro Z{sub t}.
Brazil: N. p.,
1989.
Web.
Godoy, Antonio Varejao de.
Overvoltage in chain of insulators front to lightning discharges: a comparative study of the calculation methods and of the parameter Z{sub t}; Sobretensoes em cadeia de isoladores frente a descargas atmosfericas: um estudo comparativo dos metodos de calculo e do parametro Z{sub t}.
Brazil.
Godoy, Antonio Varejao de.
1989.
"Overvoltage in chain of insulators front to lightning discharges: a comparative study of the calculation methods and of the parameter Z{sub t}; Sobretensoes em cadeia de isoladores frente a descargas atmosfericas: um estudo comparativo dos metodos de calculo e do parametro Z{sub t}."
Brazil.
@misc{etde_20108122,
title = {Overvoltage in chain of insulators front to lightning discharges: a comparative study of the calculation methods and of the parameter Z{sub t}; Sobretensoes em cadeia de isoladores frente a descargas atmosfericas: um estudo comparativo dos metodos de calculo e do parametro Z{sub t}}
author = {Godoy, Antonio Varejao de}
abstractNote = {This work studies in a deterministic point of view a lightning discharges that strikes directly the transmission line tower top. The calculation methods of this kind of surges: the method of successive reflections introduced by Jordan and the method of field well as compared with these purpose. Based on this two approaches a computational program is developed to calculate the overvoltage on the insulator string and the required parameters. Based on the results of this analysis, the simplest and most efficient method is chosen and where a simple sensitivity analysis is made for the following parameters: the impedance of lightning stroke channel, the tower foot impedance, time to crest of stroke shape function and tower surge impedance. This analysis is performed in order to verify the voltage variation on the insulator string. Finally, the last parameter, the tower surge impedance is emphasized comparing its calculated values with the measured values by geometrical model technique. (author)}
place = {Brazil}
year = {1989}
month = {Jul}
}
title = {Overvoltage in chain of insulators front to lightning discharges: a comparative study of the calculation methods and of the parameter Z{sub t}; Sobretensoes em cadeia de isoladores frente a descargas atmosfericas: um estudo comparativo dos metodos de calculo e do parametro Z{sub t}}
author = {Godoy, Antonio Varejao de}
abstractNote = {This work studies in a deterministic point of view a lightning discharges that strikes directly the transmission line tower top. The calculation methods of this kind of surges: the method of successive reflections introduced by Jordan and the method of field well as compared with these purpose. Based on this two approaches a computational program is developed to calculate the overvoltage on the insulator string and the required parameters. Based on the results of this analysis, the simplest and most efficient method is chosen and where a simple sensitivity analysis is made for the following parameters: the impedance of lightning stroke channel, the tower foot impedance, time to crest of stroke shape function and tower surge impedance. This analysis is performed in order to verify the voltage variation on the insulator string. Finally, the last parameter, the tower surge impedance is emphasized comparing its calculated values with the measured values by geometrical model technique. (author)}
place = {Brazil}
year = {1989}
month = {Jul}
}