Source-grid-storage Coordinated Planning for Power System Considering Flexibility Mutual Aid Among Regions
A collaborative planning method for the power system's source-grid-storage considering the mutual aid of flexibility among regions is proposed to address the contradiction between the increasing demand for flexibility in the new power system and the uneven distribution of flexibility resources.Firstly,considering the correlation and uncertainty of wind and solar power output,the flexibility requirements of the power system are quantified using scenario and interval methods.Furthermore,the operational characteristics of source-grid-storage multi-type flexible resources are analyzed to quantify their flexibility supply capacity.On this basis,a flexibility supply-demand balance conditionconsidering the mutual aid of flexibility among regions is established.With this balance condition as the core,a two-layer optimization model considering investment decision-making and operation simulation of the new power system is established to achieve collaborative planning of multiple types of source-grid-storage resources within a wide area.The model is then transformed into a mixed integer linear programming problem using a piecewise linearization method for solution.Finally,taking a regional interconnected power grid in Southwest China as an example for calculus analysis.The results show that the proposed planning method can effectively improve the flexible regulation ability of the power system while reducing the investment and construction costs of the system.
new power system planningsupply-demand balance of flexibilitypiecewise linearizationmutual aid among regions
万方数据
维普
