Abstract
In this paper, battery energy storage system (BESS) is installed in the distribution network (DN) to realize peak shaving and valley filling. Furthermore, the reactive power capabilities of the wind turbine (WT) and BESS are utilized to reduce the power losses and improve voltage quality. The overall operating strategy is formulated as a nonlinear programming mathematical model, which consists of BESS charging/discharging power scheduling, BESS and WT reactive power dispatching as well. The formulated mathematical model is further solved by a nonlinearly decreased inertia weight particle swarm optimization (PSO) method. Finally, a modified 69-bus distribution network is selected to verify the performance of the proposed optimal operation strategy. Experimental results show that the optimal operating strategy of BESS and WT can greatly decrease the power losses of the DN and increase the profit of the DN utilities.
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