Wind-solar-thermal storage system capacity optimization configuration method considering thermal power flexible peak regulation transformation

The invention provides a wind-solar-thermal storage system capacity optimization configuration method considering thermal power flexibility transformation and deep peak regulation, and belongs to the field of power system capacity optimization configuration. The method comprises the following steps: constructing a thermal power generating unit deep peak regulation operation cost model; based on the deep peak regulation operation cost model, constructing a wind, light and fire storage power generation annual cost model, including establishing a first objective function with the minimum system wind, light and fire storage output fluctuation ratio, a second objective function with the minimum system annual cost, and establishing constraint conditions for safe and stable operation of the wind, light and fire storage system; and based on the first objective function, the second objective function and the constraint condition of safe and stable operation of the wind-solar-thermal storage system, obtaining an equipm