Abstract
This paper proposes a model for coordinated transmission expansion planning-reactive expansion planning (TEP-RPP) that incorporates the costs related to the operation of large-scale photovoltaic units (LPU). The model is based on the dynamic evaluation of LPU generation and the effect of it on TEP-RPP problem. In a system with the presence of LPU and conventional units, the network expansion project has been dependent on two important environmental factors, solar irradiation and ambient temperature. The TEP-RPP issue has been systematized in a multi-purpose form based on investment and operation cost, voltage deviation, and stability criterion. A multi-objective gravitational search method is implemented to extract the Pareto-archive curve of the presented multi-purpose issue. Algorithm of similarity to ideal solution is used to trade-off different points of Pareto curve. The proposed mythology has been evaluated on two different modified systems, Azarbaijan regional power system of Iran and IEEE 30 bus test system. It is indicated that the presented model can be used effectively to study the intermittent impact of LPU on the solution of the TEP-RPP problem.
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