Hosting Capacity Assessment Method of Distributed PV in Distribution Network Considering Flexibility Resource Attribute of Integrated Energy Microgrids

With the large-scale access of distributed photovoltaic (PV), it has brought new technical challenges to the safe and reliable operation of distribution network(DN). In order to maximize the use of distributed PV resources, this paper proposes a hosting capacity assessment method of distributed PV in the DN considering flexibility resource attribute of integrated energy microgrids (IEM). Firstly, a multivariate flexibility resource model for IEM considering electric vehicle, energy storage system and multi-energy coupling equipments is constructed. Secondly, it proposes an optimization model for maximum hosting capacity of distributed PV considering the safety operation constraints of DN. Then, the model is transformed into a mixed-integer linear model using convex relaxation and linear approximation method, which can be directly solved using the commercial solver GAMS. Finally, the feasibility and effectiveness of the model is verified on the modified actual DN test system, and the influence of different IEM adjustable characteristics on the maximum hosting capacity of distributed PV in the DN is analyzed.