Source network load storage resource planning method considering flexible supply and demand balance

The invention relates to the field of load storage resource planning, and particularly discloses a source network load storage resource planning method considering flexible supply and demand balance, which comprises the following steps: obtaining various resource data of a planning year, and constructing a resource flexibility balance model with variable quantity balance between flexible resources and controllable resources; analyzing temperature characteristics of battery energy storage, and constructing a battery energy storage operation model containing temperature control; and constructing a double-layer planning model, establishing a power system flexibility supply and demand balance index, performing flexibility test according to an operation result output by the lower-layer optimization scheduling model, and iteratively solving the double-layer planning model until a verification condition is met, thereby obtaining an optimal planning scheme. According to the technical scheme, the problem that energy s