Abstract
In recent years, the proportion of new energy in the power grid has been increasing. As a result, the inverse peak shaving characteristics and randomness of intermittent new energy have brought great difficulties to the peak shaving and frequency regulation of the power grid. To solve this problem brought by new energy, this paper proposes a novel peak shaving and frequency regulation coordinated optimization scheme for the multi-power system including wind power, solar power, thermal power, hydropower, battery energy storage, and pumped storage. In the proposed scheme, uncertainties of the intermittent energy generation and load demand are considered. Besides, the demandside management and hydropower are considered to participate in the peak shaving and frequency regulation with the goal of minimizing the net load fluctuation and power abandonment. Finally, simulation results carried out in the MATLAB environment show that the proposed scheme is feasible in maintaining the stable operation of the system and improving the consumption level of new energy.
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