Publications Scientifiques
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Item Optimum sizing of hybrid sustainable and renewable energy systems using a modified harris hawks optimizer(Elsevier, 2025) Sifou, Djamel Eddine; Kheldoun, Aissa; Chaib, Ahmed; Belmadani, Hamza; Alharbi, Hisham; Alharbi, Saleh S.; Agajie, Takele Ferede; Ghoneim, Sherif S.M.To boost the use of renewable energy sources while maintaining reliability and affordability, Multi-source renewable and sustainable energy systems must be optimally sized. This research introduces a stand-alone metaheuristic algorithm for designing a hybrid sustainable and renewable energy system combining Wind turbine, PV and battery system. The main goal is to lower the overall present-day system's cost at the same time considering the indicator of reliability, which is the loss of power supply probability (LPSP), as a constraint. The developed algorithm resulted from enhancing the recent Harris Hawks Optimizer (HHO). The modified version incorporates a vector that saves the best three solutions and opposition learning to enhance the population diversity and assist the algorithm in jumping out of local optima regions. Three scenarios are presented, the first is modeled by PV/Bat the second one is modeled by WT/Bat while the third one consists of PV/WT/Bat. The studied project is located in Sidi Khattab, Relizane province, Algeria. The results demonstrate that the MHHO outperforms a range of well-known algorithms, among which one can cite the original HHO, Krill Optimization Algorithm (KOA), Red Squirrel Algorithm (RSA), Modified Coati Optimization Algorithm (MCOA), and Generalized Oppositional-based Social Spider Algorithm (GOOSE). Compared to the other algorithms, MHHO demonstrated superior performance in all proposed configuration settingsItem Optimization of the structures of the electric feeder systems of the oil pumping plants in Algeria(2007) Bouguerra, M.; Laaouad, F.; Habi, I.; Azaizia, RachidIn Algeria, now, the oil pumping plants are fed with electric power by independent local sources. This type of feeding has many advantages (little climatic influence, independent operation). However it requires a qualified maintenance staff, a rather high frequency of maintenance and repair and additional fuel costs. Taking into account the increasing development of the national electric supply network (Sonelgaz), a real possibility of transfer of the local sources towards centralized sources appears.These latter cannot only be more economic but more reliable than the independent local sources as well. In order to carry out this transfer, it is necessary to work out an optimal strategy to rebuilding these networks taking in account the economic parameters and the indices of reliabilityItem Optimisation du réseau algérien de transport de brut et de condensat = optimization of the algerian crude and condensate network(2000) Smati, A.; Zeraibi, Noureddine; Touabti, M. C.Le diagnostic et l'extension optimale du réseau algérien de transport de brut et de condensat, en liaison avec l'intensification des rythmes de production, nécessitent la mise au point de procédures systémiques de modélisation. Dans ce contexte, le pompage par batch est représenté par des bi-flots. L'arsenal de la théorie des graphes et le problème du flot maximal, associé à un modèle de fiabilité, sont ensuite mis à contribution. Le modèle global peut alors être utilisé comme stand d'expérimentation où l'impact de chaque décision ou événement est dégagé par simulation. Cependant, en raison de la non-linéarité des coûts, l'extension optimale du réseau est soumise à la résolution d'un modèle de programmation non linéaireItem Improvement of the reliability of the industrial electric networks(2007) Bouguerra, M.; Habi, I.The continuity in the electric supply of the electric installations is becoming one of the main requirements of the electric supply network (generation, transmission, and distribution of the electric energy). The achievement of this requirement depends from one side on the structure of the electric network and on the other side on the avaibility of the reserve source provided to maintain the supply in case of failure of the principal one. The avaibility of supply does not only depends on the reliability parameters of the both sources (principal and reserve) but it also depends on the reliability of the circuit breaker which plays the role of interlocking the reserve source in case of failure of the principal one. In addition, the principal source being under operation, its control can be ideal and sure, however, for the reserve source being in stop, a preventive maintenances which proceed on time intervals (periodicity) and for well defined lengths of time are envisaged, so that this source will always available in case of the principal source failure. The choice of the periodicity of preventive maintenance of the source of reserve influences directly the reliability of the electric feeder system In this work and on the basis of the semi- markovian’s processes, the influence of the time of interlocking the reserve source upon the reliability of an industrial electric network is studied and is given the optimal time of interlocking the reserve source in case of failure the principal one, also the influence of the periodicity of the preventive maintenance of the source of reserve is studied and is given the optimal periodicityItem Determination of the optimal preventive maintenance of the reserve source in the industrial electric network(2006) Bouguerra, M.; Meglouli, H.; Habi, I.The great majority of the electric installations belong to the first and second category. In order to ensure a high level of reliability of their electric system feeder, two power supply sources are envisaged, one principal , the other of reserve, generally a cold reserve (electric diesel group). The principal source being under operation, it’s control can be ideal and sure, however for the reserve source being in stop, a preventive maintenance’s which proceed on time intervals (periodicity) and for well defined lengths of time are envisaged, so that this source will always available in case of the principal source failure. The choice of the periodicity of preventive maintenance of the source of reserve influences directly the reliability of the electric feeder system. On the basis of the semimarkovians processes, the influence of the periodicity of the preventive maintenance of the source of reserve is studied and is given the optimal periodicity