Distributed PV Acceptance Capability Based on Local Control

With the integration of large-scale distributed PV into the distribution network, the PV penetration rate is increasing, and the imbalance between the PV output and the load leads to the reverse current in the line, causing voltage overruns, which seriously restricts the further consumption of distributed PV. To cope with this problem, this paper considers the distributed PV in local control and establishes a mathematical model to optimize the distributed PV capacity. Firstly, the in local control and regulation strategy of PV inverter is introduced, and then based on this control strategy, a mathematical model is established for optimizing distributed PV capacity with the objective of maximizing distributed PV admittance capacity, and with PV capacity, node voltage, and inverter reactive power as constraints. Finally, a differential evolutionary algorithm is used to solve the problem, and the validity of the model is verified by the IEEE33 node arithmetic example, which analyses the impact of whether or not to carry out in local control on the PV acceptance capacity, and provides a useful reference to improve the grid-connected PV capacity.