Power system capacity planning method, device, equipment and storage medium

The invention provides a power system capacity planning method, device and equipment and a storage medium, and the method comprises the steps: constructing a target function with the minimum total cost according to the comprehensive cost of a power supply in a power system, the environment cost and the daily income of an automatic generation control AGC frequency modulation auxiliary service; determining constraint conditions according to at least one of a system power constraint, an energy storage battery charge and discharge state constraint, an energy storage battery charge and discharge power constraint, a generator output constraint, a demand response load power constraint and a natural gas related constraint; according to the objective function and the constraint condition, establishing a capacity planning model corresponding to the power system; and processing the capacity planning model to obtain a capacity planning result of the power system. The configuration capacity of the power supply is reduced,