Research on enhancing method of hosting capacity of distributed photovoltaic from the viewpoint of operation and planning
摘要
In the face of the development trend of large-scale distributed photovoltaic (PV) access, in order to solve the problem of distributed PV consumption difficulties in the distribution networks, considering partitioned coordination and complementarity in distribution system, a method to enhance the distributed PV hosting capacity from the viewpoint of operation and planning is proposed. Firstly, from the viewpoint of operation, aiming to reduce network losses and enhance the distributed PV hosting capacity through partitioned source-load complementarity, grid-side reconfiguration, load-side flexible resource scheduling, and storage-side regulation, a non-network solution model is established. Secondly, from the viewpoint of planning, aiming to enhance the economics of distribution network planning, and the distributed PV hosting capacity through coordinated planning of the grid infrastructure, flexible loads and energy storage devices, a network solution model is established. Then, a model solution method based on extended second-order cone programming (ESOCP) is introduced to improve solvability and accuracy. Finally, case studies validate the effectiveness of the proposed approach. Results demonstrate that through partitioned coordination and complementarity, along with the collaboration among network, load, and storage resources, PV hosting capacity can be significantly improved while reducing operational network losses and enhancing planning cost-efficiency.