Abstract

AbstractIn real-life power system, optimization methods are used on a daily basis to obtain optimal dispatch for various types of power plants. In this paper, the existing optimization method is used to maximize profit of three cascaded Hydro Power Plants (HPP) and to co-ordinate HPPs dispatch according to Wind Power Plants (WPP) production forecast. A two-stage optimization method was used with first stage design to obtain optimal HPPs dispatch plan and to maximize profit by selling electricity on a day-ahead market. First optimization stage is defined as mixed-integer liner programming (MILP) problem. Obtained dispatch plan together with the WPPs production forecast is used to check power flows in the transmission network and if line congestion occurs, second optimization stage is needed, and it is defined as quadratic programming (QP) problem. The objective of second optimization stage is to find re-dispatch plan that would be minimal deviation from an initial dispatch but it would eliminate line congestions. Proposed optimization strategy is tested using IEEE 14 Bus Test System and the results are presented in this paper.KeywordsHydro power plantWind power plantOptimizationDispatch

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