[ Modélisation du couplage du circuit d’écoulement de l’onde de choc de foudre dans le réseau électrique haute tension : Application au poste haute tension 220 KV de Lingwala (Kinshasa) ]
Volume 34, Issue 2, November 2021, Pages 205–220
Mwanamputu Mbwanzo Clément1, Nsongo Timothée2, Pasi Bengi Masata André3, and Flory Lidinga Mombonda4
1 Institut Supérieur des Techniques Appliquées (ISTA), Kinshasa, RD Congo
2 Institut Supérieur des Techniques Appliquées (ISTA), Kinshasa, RD Congo
3 Institut Supérieur des Techniques Appliquées (ISTA), Kinshasa, RD Congo
4 Institut Supérieur des Techniques Appliquées (ISTA), Kinshasa, RD Congo
Original language: French
Copyright © 2021 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
This publication analyzes the problem of the coupling of lightning and the power transformer in the High Voltage substations of electrical networks during the injection of lightning current to the ground in sites with strong thunderstorm activity, in this case the Democratic Republic of the Congo.Although the aggressive overvoltage induced by lightning is short-lived, its amplitude and frequency greatly disturb the stability in terms of voltage and the continuity of service of the network, especially in its transport part often exposed to open air.During the flow of this shock wave to the earth, through the protection devices (surge arrester) and the earth network, the transient impedance of the substation earth electrode varies suddenly depending on the amplitude of the current flow and the nature of the ground, and reveals around it a potential difference called step voltage and touch voltage, due to the distribution of the electric field, which expose the direct environment of the substation to the danger of electrocution and substation equipment against overvoltage.This publication aims to synthesize the corrector (regulator) which will have to dampen and reject the shock of the flowing current and prevent the potential difference around the earth electrode from reaching deadly values for operators and people residing in the environment close to the substation and facilitated flow through the earth electrode.
Author Keywords: modeling, coupling, circuit, flow, shock wave, lightning, electrical network.
Volume 34, Issue 2, November 2021, Pages 205–220
Mwanamputu Mbwanzo Clément1, Nsongo Timothée2, Pasi Bengi Masata André3, and Flory Lidinga Mombonda4
1 Institut Supérieur des Techniques Appliquées (ISTA), Kinshasa, RD Congo
2 Institut Supérieur des Techniques Appliquées (ISTA), Kinshasa, RD Congo
3 Institut Supérieur des Techniques Appliquées (ISTA), Kinshasa, RD Congo
4 Institut Supérieur des Techniques Appliquées (ISTA), Kinshasa, RD Congo
Original language: French
Copyright © 2021 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
This publication analyzes the problem of the coupling of lightning and the power transformer in the High Voltage substations of electrical networks during the injection of lightning current to the ground in sites with strong thunderstorm activity, in this case the Democratic Republic of the Congo.Although the aggressive overvoltage induced by lightning is short-lived, its amplitude and frequency greatly disturb the stability in terms of voltage and the continuity of service of the network, especially in its transport part often exposed to open air.During the flow of this shock wave to the earth, through the protection devices (surge arrester) and the earth network, the transient impedance of the substation earth electrode varies suddenly depending on the amplitude of the current flow and the nature of the ground, and reveals around it a potential difference called step voltage and touch voltage, due to the distribution of the electric field, which expose the direct environment of the substation to the danger of electrocution and substation equipment against overvoltage.This publication aims to synthesize the corrector (regulator) which will have to dampen and reject the shock of the flowing current and prevent the potential difference around the earth electrode from reaching deadly values for operators and people residing in the environment close to the substation and facilitated flow through the earth electrode.
Author Keywords: modeling, coupling, circuit, flow, shock wave, lightning, electrical network.
Abstract: (french)
Cette publication analyse la problématique du couplage de la foudre et le transformateur de puissance dans les postes Haute Tension de réseaux électriques lors de l’injection du courant de foudre au sol dans les sites à forte activité orageuse à l’occurrence la République Démocratique du Congo.Bien que la surtension agressive induite par la foudre soit de courte durée, son amplitude et sa fréquence perturbent fortement la stabilité sur le plan de tenson et de la continuité de service du réseau surtout dans sa partie transport souvent exposée à l’air libre.Lors de l’écoulement de cette onde de choc à la terre, au travers de les organes de protection (parafoudre) et le réseau de terre , l’impédance transitoire de la prise de terre du poste varie brutalement en fonction de l’amplitude du courant écoulé et de la nature du sol, et fait apparaitre autour d’elle une différence de potentielle dite tension de pas et tension de toucher, due à la répartition du champ électrique, qui exposent l’environnement direct du poste au danger d’électrocution et des équipements du poste contre la surtension.Cette publication vise à synthétiser le correcteur (régulateur) qui devra amortir et rejeter le choc du courant écoulé et empêcher que la différence de potentielle autour de la prise de terre n’atteigne pas des valeurs mortelles pour les exploitants et les personnes résidant dans l’environnement proche du poste et facilité l’écoulement à travers la prise de terre.
Author Keywords: modélisation, couplage, circuit, écoulement, onde de choc, foudre, réseau électrique.
How to Cite this Article
Mwanamputu Mbwanzo Clément, Nsongo Timothée, Pasi Bengi Masata André, and Flory Lidinga Mombonda, “Coupling modeling of wave flow circuit of lighting impact in the high voltage electric network : Application in the high voltage 220 KV of Lingwala (Kinshasa),” International Journal of Innovation and Applied Studies, vol. 34, no. 2, pp. 205–220, November 2021.
