配电网源荷承载力协同评估及提升方法OA

With the large-scale integration of distributed power sources and loads like electric vehicles,the operating status of the distribution network has undergone significant changes.How to accurately assess the hosting capacity of the distribution network and adopt appropriate solutions to enhance it has become a problem worthy of studying.In view of the lack of effective collaborative assessment method for source-load hosting capacity of distribution network,the concept of"source-load hosting domain"of the distribution station area and the calculation method considering the overall maximum source-load access volume of the distribution network are proposed.Aiming at the problems of incomplete consideration of network hierarchy and insufficient utilization of scalable multiple distributed flexible resources in the hosting capacity enhancement methods for the distribution network,a multi-area flexible resource planning-operation co-optimization model of distribution network taking into account the multi-layer constraints of distribution station area,feeder line and substation is proposed.It is then decoupled into a two-layer model,and a distributed algorithm is used to obtain the hosting capacity enhancement scheme based on the allocation and regulation of flexible resources.Cases show that the proposed method can realize the collaborative assessment for the source-load hosting capacity of the distribution network,and it is more accurate and flexible than the traditional method.The proposed enhancement method can economically enhance the hosting capacity of the distribution network,promote the on-site consumption of renewable energy,reduce the waste of distribution assets,and improve the efficiency and feasibility of the model by introducing distributed solving algorithms.