Study on Steady-State Voltage Distribution of Medium Voltage Distribution Network Considering High Proportion Distributed Photovoltaic Access

Considering the influence of distributed photovoltaic access to distribution network on steady-state voltage distribution, this paper establishes a mathematical model of steady-state voltage distribution based on constant current static model. The effects of different variables (including access capacity, access location, etc.) on the steady-state voltage distribution during distributed photovoltaic access are analyzed under three different conditions: uniform load distribution, increasing load distribution and decreasing load distribution. The results show that the model can effectively analyze the impact of distributed photovoltaic single point or multi-point access on the voltage distribution of distribution network. It can guide the reasonable arrangement of the location and capacity of distributed photovoltaic access in the actual power grid planning.