Robust dispatch of power systems with multi-type renewable energy sources

Intermittence and volatility of renewable energy sources such as wind and photovoltaic power brings new challenges to power system dispatch problem. The predicted and error dispatch scenarios are defined based on the real outputs of intermittent generation sources. A robust dispatch model of power systems with multi-type renewable energy sources such as coal, hydro, natural gas, wind and photovoltaic is proposed in this paper. The dispatch scheme given by this model is optimal in the predicted scenario and adapt to all error scenarios. Through discussion of each constraint, the model is simplified and then solved by the interior point theory. Simulation results based on the data of a real power grid show that the model and solution method proposed in paper is effective. The effects of intermittent power confidence interval and adjustment time on the robust dispatch results are analyzed finally.