Optimized Configuration of Energy Storage in Solar Thermal Power Station Considering Solar Multiple

At present, energy shortage and environmental pollution have become the number one problem restricting the development. Therefore, the new energy power generation represented by solar energy has been developed rapidly. However, due to the excessive dependence on weather conditions for photovoltaic power generation, its output causes randomness and uncertainty. Compared with photovoltaic power generation, solar thermal power generation, as an emerging power generation technology, can flexibly adjust its output because of its large capacity heat storage system. The construction of photovoltaic thermal power stations near photovoltaic power stations to form photovoltaic-thermal power generation will become a common form of energy development. In order to use the output of the photothermal power station to alleviate the uncertainty of photovoltaic output, it is necessary to rationally configure the heat storage capacity of the photothermal power station in the combined power generation system, and use the output of the photothermal power station to alleviate the uncertainty of photovoltaic output. According to the uncertainty of photovoltaic forecast output and load prediction, this paper adopts scenario analysis method; establish the two-stage optimal configuration model of heat storage capacity of photothermal power station to further calculate the optimal heat storage capacity in each period. Through the example analysis, the proposed method can maximize the photovoltaic power supply and improve the operation efficiency of the whole system.