Abstract
This paper introduces an optimal planning strategy to find the location and the size of an energy storage system (ESS) among the power network buses along with transmission lines expansion to accommodate the wind power energy integration to serve the future demand growth. The proposed methodology gives the optimal location concerning the required size of ESS at each bus, along with the optimal selections to reinforce existing lines or recommending new ones in a single solving stage. The co-optimization problem was formulated as a mixed-integer linear programming problem, in which the power balance constraint was developed as a DC Optimal Power Flow (DC-OPF). Furthermore, the load shedding and wind curtailment are taken into account in the cost function. The methodology was exercised in the IEEE RTS-96 system. The simulation results demonstrate the effectiveness of the proposed optimal sizing strategy, which the optimal size and the location of an ESS were found, and the optimal candidates and transfer capacity for the tie-lines expansion planning are determined.
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