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Analysis of Photovoltaic Carrying Capacity of Distribution Network Based on Voltage Sensitivity

With the large-scale access of distributed photovoltaic to the distribution network, the increase of node voltage has become the main reason for limiting the large-scale access of distributed PV, and effectively evaluating the maximum carrying capacity of distributed PV in the distribution network has become the research focus.In this paper, the voltage sensitivity-based method is used to analyze the distributed PV carrying capacity of the rural distribution network. Different scenarios are selected to maximize the distributed PV carrying capacity of the rural distribution network. Based on the voltage sensitivity analysis, the sensitive points of the rural distribution network after the distributed PV is connected are determined through the active sensitivity matrix. The maximum PV carrying capacity and acceptance rate of the rural distribution network are obtained without causing the voltage of the sensitive points to exceed the limit. Finally, a typical rural distribution network example is simulated by matlab simulation software. The simulation results show that this method can effectively evaluate the PV carrying capacity in rural areas.