A daily scheduling algorithm of Photovoltaic-Power Storage System (PV-PS) and an economic estimation for its allocation in a transmission open access environment are presented in this paper. In addition to the total profit of transmission system operation, an expected profit of PV-PS daily operation is estimated using a spot market pricing of short run marginal cost. A desirable allocation point of PV-PS is discussed from various view points of economy and available solar energy etc. To demonstrate the effectiveness of the proposed method, numerical examples for a model power system of 44 nodes, 8 thermal units and one PV-PS are shown in detail including daily profits of system operator, PV-PS producer and consumers through the PV-PS operation.
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