太阳能-风能热储能混合发电系统的可行性分析

Abstract The global energy transformation is driving advancements in solar and wind energy technologies. The spatiotemporal complementarity of solar and wind energy makes their integration essential for enhancing the stability and efficiency of renewable energy systems. This study introduces a Solar-Wind Thermal Storage Hybrid Power Generation system (SWT-SHPG), designed to facilitate efficient and stable operation through multi-energy supply, thermochemical heat storage, and integrated power generation. The system uses high-density reversible calcium-based materials to achieve long-term low-loss heat storage at an operating temperature of 650–800 °C, with an energy density of 1554 kJ/kg. At the same time, a dynamic allocation algorithm optimizes solar-wind complementarity to meet balanced storage and generation needs, achieving a thermal cycle efficiency of 65 % and a 24-hour dynamic load response rate of 71.7 %. Technical and economic analyses indicate that the levelized cost of electricity for this system (0.047 €/kWh) is more competitive than lithium battery power system (0.077 €/kWh). It offers a new solution for the utilization of renewable energy and mitigation of the proportion of wind and solar power curtailment.