Optimization strategies for virtual power plants' participation in high penetration renewable energy systems' day-ahead scheduling

With the gradual reduction of conventional fossil fuels, the development of renewable energy has experienced rapid growth. The increasing penetration of renewable energy in the distribution grid presents new challenges and issues for its safe and stable operation. This paper proposes a day-ahead optimization scheduling strategy for the participation of virtual power plants (VPP) in high-penetration renewable energy systems. Firstly, the integration of renewable energy generation systems, energy storage systems, electric vehicles, and flexible loads is consolidated into a unified virtual power plant. Subsequently, a day-ahead optimization scheduling model is formulated, considering the involvement of the virtual power plant in the distribution grid. Finally, simulation calculations are performed on a modified IEEE33 node system. The results demonstrate the effectiveness of the high-penetration renewable energy system facilitated by VPP participation. This system not only enables electricity trading but also optimizes the utilization of internal resources, thereby enhancing the reliability of power supply and effectively promoting the integration of new energy sources.