Abstract
In this study a hybrid configuration of weight improved particle swarm optimization (WIPSO) algorithm and gravitational search algorithm termed hybrid WIPSO-GSA algorithm is proposed for separate and simultaneous planning of distributed generation (DG) and capacitor in radial distribution network. The optimal DG and capacitor planning problem is examined from local distribution company's viewpoint considering minimization of total active power loss $(\mathbf{P}_{loss^{total}})$ as main objective. In addition, apart from constant power load modeling, the voltage dependent realistic mixed customer load modeling is also considered at different load levels such as light, medium and peak. Moreover, the total cost benefit achieved through DG and capacitor planning is established by considering necessary economic factors for the total planning period. The proposed methodology is tested on standard 33-bus radial distribution system. The superiority of the proposed technique is also illustrated by comparing the results with other optimization techniques.
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