Wind energy and solar energy are both important renewable energy sources that are clean and abundant in reserves. Due to the influence of seasonal changes and weather changes, wind energy and solar energy are unstable and discontinuous energy sources. Single wind power generation or solar photovoltaic power generation has the defect of unstable power generation. However, wind energy and solar energy have natural complementary advantages, that is, strong sunlight during the day and strong wind at night; good sunshine in summer and weak wind, while strong wind and weak sunshine in winter and spring. The wind-solar complementary power generation system makes full use of the complementarity of wind and solar energy resources and is a new energy generation system with high cost performance.
Wind energy and solar energy can constitute a power generation system independently, or they can form a wind and solar hybrid power generation system, that is, a wind-solar complementary power generation system. The form of power generation mainly depends on the local natural resource conditions and the comprehensive cost of power generation. Wind power generation is suitable for areas with good wind energy resources, and solar photovoltaic power generation can be used in areas with abundant sunshine. Under normal circumstances, the comprehensive cost of wind power generation is much lower than the cost of solar photovoltaic power generation. Therefore, wind power generation system should be preferred in areas with good wind energy resources. In recent years, wind-solar complementary power generation systems have been increasingly widely used because of their resource complementarity, power supply security, and stability, which are better than single energy power generation systems, and their moderate prices.
