Coordinating planning of generation-grid-load-storage flexibility resources

The addition of the flexibility balance constraint makes planning a high-dimensional, nonlinear stochastic optimization problem with a high mathematical challenge to solve. Therefore, it is urgent to establish an optimal solution model based on flexibility programming. Firstly, a bi-level coordinated flexibility programming model based on upper-level investment decisions and lower-level operation simulation is developed; the output, flexibility supply, and demand of all types of resources are described by random variables; and the probability constraints are handled by alternate iterations of the two-tiered optimization problem. Secondly, the maximum “net benefit increment ratio” algorithm is proposed to solve the optimized flexibility planning model.