Power system source-network load-storage collaborative day-ahead optimization scheduling method and power system source-network load-storage collaborative day-ahead optimization scheduling system

The invention discloses an electric power system source network load storage cooperation day-ahead optimization scheduling method and system. The method comprises the following steps: collecting electric power system data; determining an objective function and a constraint condition according to the data; constructing a source-grid-load-storage collaborative day-ahead optimal scheduling model and an intra-day optimal scheduling model of the power system; and solving the model to obtain computer unit output and tie line power, and determining an optimal operation strategy of power system scheduling. According to the power system source-grid-load-storage collaborative day-ahead optimization scheduling method provided by the invention, energy storage charging and discharging time constraints are considered. According to the source-network-load-storage-coordinated day-ahead optimization scheduling method of the power system, day-ahead and intra-day models are decoupled and optimized respectively, so that the scal