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Auteur Rabia Mehasni |
Documents disponibles écrits par cet auteur (7)
Affiner la recherche Interroger des sources externesContribution au CND par l’utilisation des signaux électromagnétiques véhiculés. / Hamza Boudjefdjouf
Titre : Contribution au CND par l’utilisation des signaux électromagnétiques véhiculés. Type de document : texte imprimé Auteurs : Hamza Boudjefdjouf, Auteur ; Rabia Mehasni, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 125 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Electro-techniqueTags : Réflectométrie équations des télégraphistes propagation TEM problème direct problème inverse HR-FDTD paramètres linéique R, L, G et C, jonction en T Reflectometry telegrapher’s equations TEM propagation direct problem inverse problem p.u.l RLGC T junction Index. décimale : 622 Electro-Technique Résumé :
This thesis focuses on fault diagnosis of wired electrical networks using reflectometry. To develop diagnosis algorithms; we have studied both, direct problem (based on numerical simulations of electrical networks) and the inverse problem (which allows obtaining the network parameters from its measurements). For the direct problem, a very High Resolution Finite Difference Time Domain (HR-FDTD) method can be used to simulate how a given electrical transmission network is affected by hard/soft faults with enough fidelity. However, such process requires heavy and costly computational resources. A valid alternative to the FDTD based model relies on the use of a quicker and more efficient analytical based approach. For instance, the wired electric networks supporting a TEM propagation mode can be easily modeled by solving the transmission line telegrapher equations. Since the precision of the optimization algorithm in identifying the fault location and topology requires a model sensitively similar to the considered network, the key step remains the precise evaluation of the p.u.l RLGC parameters of the cable. A further improvement of the model accuracy consists in the modeling of the parasitic inductance associated to the T-junction. Finally, the ultimate goal of the highly realistic forward modeling being the inversion, it is important to know that reflectographs obtained by forward modeling are generally difficult to interpret, and they are not self-explanatory. For this purpose, multiple iterations are required, and thus, an efficient optimization algorithm is introduced in this dissertation, which is able to treat the inverse problem, and to identify any abnormality affecting the network in a short computational time. The methodologies and algorithms proposed in this thesis are validated either by numerical simulations or by real measurements.Note de contenu :
Annexes.Diplôme : Doctorat en sciences En ligne : ../theses/electrotec/BOU7409.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11061 Contribution au CND par l’utilisation des signaux électromagnétiques véhiculés. [texte imprimé] / Hamza Boudjefdjouf, Auteur ; Rabia Mehasni, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2018 . - 125 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Electro-techniqueTags : Réflectométrie équations des télégraphistes propagation TEM problème direct problème inverse HR-FDTD paramètres linéique R, L, G et C, jonction en T Reflectometry telegrapher’s equations TEM propagation direct problem inverse problem p.u.l RLGC T junction Index. décimale : 622 Electro-Technique Résumé :
This thesis focuses on fault diagnosis of wired electrical networks using reflectometry. To develop diagnosis algorithms; we have studied both, direct problem (based on numerical simulations of electrical networks) and the inverse problem (which allows obtaining the network parameters from its measurements). For the direct problem, a very High Resolution Finite Difference Time Domain (HR-FDTD) method can be used to simulate how a given electrical transmission network is affected by hard/soft faults with enough fidelity. However, such process requires heavy and costly computational resources. A valid alternative to the FDTD based model relies on the use of a quicker and more efficient analytical based approach. For instance, the wired electric networks supporting a TEM propagation mode can be easily modeled by solving the transmission line telegrapher equations. Since the precision of the optimization algorithm in identifying the fault location and topology requires a model sensitively similar to the considered network, the key step remains the precise evaluation of the p.u.l RLGC parameters of the cable. A further improvement of the model accuracy consists in the modeling of the parasitic inductance associated to the T-junction. Finally, the ultimate goal of the highly realistic forward modeling being the inversion, it is important to know that reflectographs obtained by forward modeling are generally difficult to interpret, and they are not self-explanatory. For this purpose, multiple iterations are required, and thus, an efficient optimization algorithm is introduced in this dissertation, which is able to treat the inverse problem, and to identify any abnormality affecting the network in a short computational time. The methodologies and algorithms proposed in this thesis are validated either by numerical simulations or by real measurements.Note de contenu :
Annexes.Diplôme : Doctorat en sciences En ligne : ../theses/electrotec/BOU7409.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11061 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BOU/7409 BOU/7409 Thèse Bibliothèque principale Thèses Disponible
Titre : Elaboration de modèles de calcul de dispositifs à induction électromagnétique : application à un système de séparation magnétique dans les milieux particulaires Type de document : texte imprimé Auteurs : Rabia Mehasni ; Univ. de Constantine, Éditeur scientifique ; M.E.H. Latreche, Directeur de thèse Année de publication : 2007 Importance : 125 f. Note générale : 01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. Langues : Français (fre) Catégories : Français - Anglais
Electro-techniqueTags : Optimisation Elements finis Couplage magnétodynamique Homogéneisation Particules fines Particules pilotes Séparation magnétique Index. décimale : 622 Electro-Technique Permalink : index.php?lvl=notice_display&id=364 Elaboration de modèles de calcul de dispositifs à induction électromagnétique : application à un système de séparation magnétique dans les milieux particulaires [texte imprimé] / Rabia Mehasni ; Univ. de Constantine, Éditeur scientifique ; M.E.H. Latreche, Directeur de thèse . - 2007 . - 125 f.
01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C.
Langues : Français (fre)
Catégories : Français - Anglais
Electro-techniqueTags : Optimisation Elements finis Couplage magnétodynamique Homogéneisation Particules fines Particules pilotes Séparation magnétique Index. décimale : 622 Electro-Technique Permalink : index.php?lvl=notice_display&id=364 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité MEH/5277 MEH/5277 Thèse Bibliothèque principale Thèses Disponible
Titre : Elaboration de modèles de calcul de dispositifs a induction électromagnétique : Application a un système de séparation magnétique dans les milieux particulaires Type de document : texte imprimé Auteurs : Rabia Mehasni, Auteur ; Mohamed Elhadi Latreche, Directeur de thèse ; Mouloud Feliachi, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 2007 Importance : 126 f Format : 31 cm Note générale : Doctorat en sciences
2 copies imprimées disponiblesLangues : Français (fre) Catégories : Français - Anglais
Electro-techniqueTags : Couplage magnétodynamique, éléments finis homogénéisation optimisation particules fines particules pilotes séparation magnétique. Electro-technique Index. décimale : 622 Electro-Technique Diplôme : Doctorat en sciences En ligne : ../theses/electrotec/MEH10009.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=5816 Elaboration de modèles de calcul de dispositifs a induction électromagnétique : Application a un système de séparation magnétique dans les milieux particulaires [texte imprimé] / Rabia Mehasni, Auteur ; Mohamed Elhadi Latreche, Directeur de thèse ; Mouloud Feliachi, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2007 . - 126 f ; 31 cm.
Doctorat en sciences
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Electro-techniqueTags : Couplage magnétodynamique, éléments finis homogénéisation optimisation particules fines particules pilotes séparation magnétique. Electro-technique Index. décimale : 622 Electro-Technique Diplôme : Doctorat en sciences En ligne : ../theses/electrotec/MEH10009.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=5816 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité MEH/10009 MEH/10009 Thèse Bibliothèque principale Thèses Disponible
Titre : Etude 3D d’un procédé de séparation magnétique dans les liquides en ecoulement Type de document : texte imprimé Auteurs : Abdallah Belounis, Auteur ; Rabia Mehasni, Directeur de thèse ; Mouloud Feliachi, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2016 Importance : 106 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Electro-techniqueTags : Eléments finis 3D écoulement turbulent homogénéisation locale optimisation particules ferromagnétiques séparation magnétique 3D finite element turbulent flow local homogenization optimization ferromagnetic particles magnetic
separation ربط مغنيدينبميكي العنبصر المنتهية المجبنسة التكييف و الأختيبر الجزيئبت الذقيقة الجزيئبت المتحكمة و المىجهة العزل و
الألتقبط المغنبطيسيIndex. décimale : 622 Electro-Technique Résumé : This work presents a contribution to the study of the problems of the magnetic separation. It is a 3D study of the
existing magnetic, hydraulic and particle dynamic phenomena, the conception and the realization of a prototype
intended to purify flowing water by the extraction of contained ferromagnetic fine particles. A numerical approach
has been adapted and used in a 3D configuration. Such approach permits the taking into account the real effect of
the acting magnetic and hydrodynamic actions applied on the particles. The study of the particle behaviour in water
turbulent flow has permitted the identification of the parameters influencing on the separation performances. These
parameters are considered as optimization keys of the proposed device. The optimization was based on the
minimization of an objective function which is the distance between the central point of the capture element and the
capture site of a given particle with initial conditions chosen as a function of the flow and applied field
specifications. To implement the optimization approach, the Tabu search method has been used. The obtained
results have shown that the best capture is obtained by a separator with three capture elements spaced between them
by an angle of 120°. For a practical validation, a device has been realized and experiments have been achieved. The
flow regime is obtained by a pumping system. The capture elements are identical rectangular electromagnets. The
particles are injected through an opening made in the entrance of the channel. For a quantitative validation, the
particle motion and the captured particle build-up have been controlled by a camera. The quantitative validation has
been achieved by using a Hall effect sensing device.
Diplôme : Doctorat En ligne : ../theses/electrotec/BEL6960.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10359 Etude 3D d’un procédé de séparation magnétique dans les liquides en ecoulement [texte imprimé] / Abdallah Belounis, Auteur ; Rabia Mehasni, Directeur de thèse ; Mouloud Feliachi, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2016 . - 106 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Electro-techniqueTags : Eléments finis 3D écoulement turbulent homogénéisation locale optimisation particules ferromagnétiques séparation magnétique 3D finite element turbulent flow local homogenization optimization ferromagnetic particles magnetic
separation ربط مغنيدينبميكي العنبصر المنتهية المجبنسة التكييف و الأختيبر الجزيئبت الذقيقة الجزيئبت المتحكمة و المىجهة العزل و
الألتقبط المغنبطيسيIndex. décimale : 622 Electro-Technique Résumé : This work presents a contribution to the study of the problems of the magnetic separation. It is a 3D study of the
existing magnetic, hydraulic and particle dynamic phenomena, the conception and the realization of a prototype
intended to purify flowing water by the extraction of contained ferromagnetic fine particles. A numerical approach
has been adapted and used in a 3D configuration. Such approach permits the taking into account the real effect of
the acting magnetic and hydrodynamic actions applied on the particles. The study of the particle behaviour in water
turbulent flow has permitted the identification of the parameters influencing on the separation performances. These
parameters are considered as optimization keys of the proposed device. The optimization was based on the
minimization of an objective function which is the distance between the central point of the capture element and the
capture site of a given particle with initial conditions chosen as a function of the flow and applied field
specifications. To implement the optimization approach, the Tabu search method has been used. The obtained
results have shown that the best capture is obtained by a separator with three capture elements spaced between them
by an angle of 120°. For a practical validation, a device has been realized and experiments have been achieved. The
flow regime is obtained by a pumping system. The capture elements are identical rectangular electromagnets. The
particles are injected through an opening made in the entrance of the channel. For a quantitative validation, the
particle motion and the captured particle build-up have been controlled by a camera. The quantitative validation has
been achieved by using a Hall effect sensing device.
Diplôme : Doctorat En ligne : ../theses/electrotec/BEL6960.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10359 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BEL/6960 BEL/6960 Thèse Bibliothèque principale Thèses Disponible
Titre : Étude de l’écoulement de puissance optimal par les méthodes d’optimisation Metaheuristiques. Type de document : texte imprimé Auteurs : Ala Eddine Chaib, Auteur ; Rabia Mehasni, Directeur de thèse Mention d'édition : 24/06/2021 Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2021 Importance : 158 f. Format : 30 cm. Note générale : 1 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Electro-techniqueTags : Ecoulement de puissance optimal (OPF) Méthodes d’optimisation métaheuristiques Méthodes de Comparaison statistique non paramétrique FACTS SCOPF 0ptimal power flow (OPF) Metaheuristic Optimization Algorithm parametric and non parametric comparison التدفق الأمثل للطاقة(OPF) طاقة المقارنة الإحصائیة الغیر معیاریة التدفق الأمثل ل مع مراعاة SCOPFالسلامة قیود Index. décimale : 622 Electro-Technique Résumé :
In this work, an optimal power flow problem (OPF) has been treated where the aim is the identification of the powerful algorithm that can take into account both equality and inequality constraints for solving the OPF problems. For this, a comparative study of thirty algorithms implemented on four cases of bus systems has been achieved. The considered algorithms have been tested on nine objective functions which are the fuel cost, voltage profile improvement, stability index enhancement, gas emission reduction, cost with multi-fuels option, cost with valve-point effect, cost with valve-point effect and multi-fuels option, cost with FACTS devices and security constraints optimal power flow (SCOPF) for the IEEE30, IEEE57, IEEE 118 and the Algerian 59 bus test system. When solving the OPF problem, the control variables have been computed by solving the power flow problem using the Newton-Raphson method. To allow a valid comparison between the algorithms, these last have been performed
under the same computing conditions notably the number of iterations fixed in our case as 500. Two kinds of comparison have been done; parametric and non parametric. The parametric one is based on the consideration of the global optimum, the mean value and the standard deviation while in non parametric comparison we consider the multiple sign test, the Friedman test and the profile performance. The parametric comparison has shown that the ABC algorithm is the best to use for all the considered objective functions for all the treated bus systems followed by the MVPA, ICA, GA-MPC and the DSA algorithms. The non parametric comparison has showed that the MVPA, GA-MPC and the DSA are the best for solving the OPF problems. Taking into account the results of the two comparisons, we conclude that the MVPA, GA-MPC and the DSA are the suitable algorithms for solving the OPF problems.
Diplôme : Doctorat en sciences En ligne : ../theses/electrotec/CHE7777.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11611 Étude de l’écoulement de puissance optimal par les méthodes d’optimisation Metaheuristiques. [texte imprimé] / Ala Eddine Chaib, Auteur ; Rabia Mehasni, Directeur de thèse . - 24/06/2021 . - جامعة الإخوة منتوري قسنطينة, 2021 . - 158 f. ; 30 cm.
1 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Electro-techniqueTags : Ecoulement de puissance optimal (OPF) Méthodes d’optimisation métaheuristiques Méthodes de Comparaison statistique non paramétrique FACTS SCOPF 0ptimal power flow (OPF) Metaheuristic Optimization Algorithm parametric and non parametric comparison التدفق الأمثل للطاقة(OPF) طاقة المقارنة الإحصائیة الغیر معیاریة التدفق الأمثل ل مع مراعاة SCOPFالسلامة قیود Index. décimale : 622 Electro-Technique Résumé :
In this work, an optimal power flow problem (OPF) has been treated where the aim is the identification of the powerful algorithm that can take into account both equality and inequality constraints for solving the OPF problems. For this, a comparative study of thirty algorithms implemented on four cases of bus systems has been achieved. The considered algorithms have been tested on nine objective functions which are the fuel cost, voltage profile improvement, stability index enhancement, gas emission reduction, cost with multi-fuels option, cost with valve-point effect, cost with valve-point effect and multi-fuels option, cost with FACTS devices and security constraints optimal power flow (SCOPF) for the IEEE30, IEEE57, IEEE 118 and the Algerian 59 bus test system. When solving the OPF problem, the control variables have been computed by solving the power flow problem using the Newton-Raphson method. To allow a valid comparison between the algorithms, these last have been performed
under the same computing conditions notably the number of iterations fixed in our case as 500. Two kinds of comparison have been done; parametric and non parametric. The parametric one is based on the consideration of the global optimum, the mean value and the standard deviation while in non parametric comparison we consider the multiple sign test, the Friedman test and the profile performance. The parametric comparison has shown that the ABC algorithm is the best to use for all the considered objective functions for all the treated bus systems followed by the MVPA, ICA, GA-MPC and the DSA algorithms. The non parametric comparison has showed that the MVPA, GA-MPC and the DSA are the best for solving the OPF problems. Taking into account the results of the two comparisons, we conclude that the MVPA, GA-MPC and the DSA are the suitable algorithms for solving the OPF problems.
Diplôme : Doctorat en sciences En ligne : ../theses/electrotec/CHE7777.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11611 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité CHE/7777 CHE/7777 Thèse Bibliothèque principale Thèses Disponible 
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