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Abstract-This article presents a new efficient method for optimal placement and sizing of wind power generators (WPG) in power networks with an objective of coping maximum loadability margin and minimizing reactive power loss. A new total voltage stability based on continuation power flow (CPF) theorem is used to model the problem. The method also highlights the effects of random characteristics of wind resources on loadability margin. Cuckoo search algorithm is applied to find the optimum placement and sizing of WPG since it presents several advantages of few control parameters, high solution quality and fast computational time. The experiment results of IEEE 9-bus show that the optimum location and size of WPGs are different from those considering power system loss and voltage deviation in objective function of the optimization process. A significant effect of the random characteristic of wind resource during load demand growth is revealed. The simulation results show that the CSA can be an efficient and promising method for optimal placement and sizing of WPG in power networks problem.

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