Browsing by Author "Karimi, Mohammad"

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    Differential evolutionary algorithm for distribution capacitor allocation considering varying load conditions
    (Видавництво Львівської політехніки, 2011) Karimi, Mohammad
    Many loads in power systems are inductive loads then consume reactive power, this fact lead to drop voltage and in worst case blackout and collapse voltage. Best option in distribution networks for avoid of this problem is installation of capacitor bank. In capacitor installation, finding optimal location and size of capacitor have special importance. In this paper, Differential Evolutionary (DE) algorithm is proposed for optimal placement and sizing of capacitor. Our objective function includes the minimization of investment costs and energy losses. Load of network has been considered in three levels. The proposal method has been tested on 34-bus radial distribution system and results of simulation have been compared with several valid reference.
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    Solution of optimal capacitor placement problem using improved differential evolutionary algorithm on radial networks
    (Видавництво Львівської політехніки, 2011) Karimi, Mohammad; Shayeghi, Hossein
    The capacitor placement problem consists of determining the optimal numbers, types, locations and sizes of capacitor banks such that minimum yearly cost due to power/energy losses and cost of capacitors is achieved, while the operational and power quality constraints are maintained within the required limits. This paper has proposed several improvement steps on differential evolutionary algorithm (DE) for obtaining improved differential evolutionary (IDE) algorithm. The obtained IDE has used for optimal placement and sizing of capacitor in radial distribution networks. The proposal method has been tested on 10-bus IEEE standard network. To demonstrate sufficiency and reliability of proposed IDE, this compared with other approaches in valid references.