A Novel Photovoltaic Consumption Capacity Evaluation Strategy Considering the Randomness of Source and Load

When distributed generation (DG) is connected to the distribution network, the transfer of power from the low-voltage power grid to the high-voltage power grid can result in detrimental effects on the power grid. Among various factors, power restriction is the primary factor that affects DG's access to the distribution network. To address this, we establish a mathematical model that considers reverse power node voltage and power flow constraint to determine the maximum capacity of DG. Additionally, we introduce a hybrid approximation method to calculate the maximum access capacity. We validate the effectiveness of this approach through an example involving distributed photovoltaic (PV) generation accessing a 33-node low-voltage distribution network.