Publications Scientifiques

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    An application of PMU in solar energy generation Plant Connected Power Grid
    (2019) Mahboubi, Meriem; Bentarzi, Hamid; Ouadi, Abderahmane
    Solar energy is one of the most abundant green energies in our planet. In order to satisfy the world demand of electrical energy, solar energy may be used. Identical to all other types of power generation plants, the integration of the solar energy source in power grid has an impact on its operation. Thus, when the electrical power is injected into the power grid by the solar energy source, the system electrical parameters must be well monitored for synchronization purpose. This can be accomplished with the aid of synchro-phasors measurement units. The phase angle of the utility is a critical parameter for the operation of power devices feeding power into the grid like PV inverters. There are many techniques to obtain the grid phase angle such as the zero-crossing detection and the orthogonal phase locked loop. This research work discusses the use of PMUs (Phasor Measurement Unit) for providing this important parameter to system synchronization in the case of high penetration of solar energy in the power grid
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    Contribution to The Reliability Study of Photovoltaic Systems Using Static and Dynamic Analysis Methods
    (Inderscience, 2019) Mahdi, Ismahan; Nadji, Bouchra; Simeu-Abazi, Zineb
    The study of reliability has not been received great attention from researchers, an estimation of a lifetime and why not improve enhance is still possible. For that, it is necessary to distinguish the different failure modes, their causes and their effects on solar modules, in our case composed by Silicon, the most spread technology and the most used in the production of electricity. In this article, we will present a contribution to the reliability study of photovoltaic systems. First, the study will be focused on the static analysis of our system by using: structured analysis and design technique and function analysis system technique methods, which make it possible to carry out a functional analysis of our system. Next, our study will be based on the dynamic analysis by using: failure mode, effects, and criticality analysis, fault tree analysis and finally stochastic Petri nets methods. These allow making a dysfunctional analysis of the system by introducing the ‘time’ which is a very important factor in our study
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    Numerical investigation of a novel tower solar chimney concept
    (elsevier, 2020) Kebabsa, Hakim; Lounici, Mohand Said; Daimallah, Ahmed
    Divergent tower solar chimney power plant is an attractive upgrading of the solar chimney system. However, boundary layer separation (BLS) phenomenon can appear when the divergence angle exceeds a specific value, inducing system performance degradation. The present paper proposes a novel solar chimney tower concept, named annular tower solar chimney power plant (ATSCPP), to deal with BLS phenomenon and improve the divergent tower system. Accordingly, the influence of exterior tower radius (ETR) and interior tower radius (ITR) were evaluated, using the Spanish prototype. Simulations were carried out using a 3D model. The results indicate that flow behavior, power output and thermal efficiency shows a strong sensitivity to the change of both ETR and ITR. The best case is obtained when (ETR = 17 m, ITR = 13 m). The new solar chimney tower concept allowed a significant increase in the driving potential. The total improvement in power output reaches 32%. An improved concept which allows a compromise between induced cost and performance gain of the system is also proposed.
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    Hybrid model for estimating monthly global solar radiation for the Southern of Algeria : (Case study : Tamanrasset, Algeria)
    (Elsevier, 2017) Achour, Lazhar; Bouharkat, Malek; Assas, Ouarda; Behar, Omar
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    New model for estimating solar energy resources
    (2012) Behar, Omar; Khellaf, Abdallah; Mohammedi, Kamal
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    Numerical simulation of solar on grid plan in Tamanrasset
    (Praise Worthy Prize, 2015) Afif, Benameur; Allaoui, Tayeb; Chaker, Abdelkader; Benhamou, Amina
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    Comparative study between solar and conventional heating-economic study and environmental impact
    (Elsevier, 2014) Sahnoune, Fatiha; Madani, M.; Zelmat, M.; Belhamel, M.
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    Instantaneous performance of the first integrated solar combined cycle system in Algeria
    (Elsevier, 2011) Behar, Omar; Mohamedi, Kamal; Kellaf, Abdallah; Belhamel, Maiouf
    There is a great interest in the development of renewable energies and more particularly in solar energy. This study arises in midst of construction of the first integrated solar combined cycle system (ISCCS) in Algeria. In the present work, an integrated plant with simple pressure level is proposed and the preferred method for converting solar energy into electricity is applied. Thermal efficiency, electricity production and net solar electricity are the main parameters to evaluate the instantaneous performance of each component of the solar power station through a year. The simulation results show that the power plant can provide about 134MW with efficiency equals 57.5% at night. At daytime, the net solar electricity ratio can be very interested and reach the limit of 15% at the design point. As a result, the output from and the efficiency of the ISCCS will be above the combined cycle regime by 17 and 16.5%, which are correspond to 157MW and 67%, respectively. Increasing of steam turbine capacity by 50% at the design point is other advantage of the proposed design