A multi‐energy complementary coordinated dispatch method for integrated system of wind‐photovoltaic‐hydro‐thermal‐energy storage

Abstract

In view of the current problem of severely abandoning wind and photovoltaic in the wind-photovoltaic-hydro-thermal-energy storage, a multi-energy complementary coordinated dispatch method for the integrated system of wind-photovoltaic-hydro-thermal-energy storage is proposed. First of all, the power output of wind and photovoltaic is simulated using the improved Markov chain. Secondly, the load demand, the minimum economic output of thermal power units, and the force output of hydropower units are determined. The feasible operation region of renewable energy power generation is also calculated. Then, the power generation of wind and photovoltaic is prioritized within the feasible operation region of renewable energy power generation. On this basis, the dispatch strategy of hydropower is formulated according to plan for water. Finally, aiming at the minimum cost of thermal power units and life attenuation comprehensively of energy storage within dispatch period, the dispatch strategy for thermal power units and energy storage is proposed. The particle swarm algorithm is used to solve the optimal objective function. The instance shows the correctness and validity of this method.