Data-Driven Construction of Static Voltage Security Region in Distribution Networks

The penetration rate of distributed generation, represented by photovoltaic power generation, is steadily increasing in distribution networks. As distribution networks expand in scale, the safety and stability constraints they must account for grow increasingly complex. Distribution network power flow calculations face challenges such as heightened nonlinearity and substantial computational burdens. This paper proposes a data-driven method for constructing static voltage security region in distribution networks. This approach enables security region construction without relying on precise network parameters, simplifies operational constraints, and significantly accelerates the solution of operational optimization problems. Finally, using the IEEE33 node system as an example, the effectiveness of the proposed method is validated through simulation analysis and comparative studies.