This power generation technology is different from solar "photovoltaic" power generation (light is directly converted into electricity). Solar "thermal power generation" uses all-weather follow-up driving heliostat to focus sunlight to heat working medium (water, molten salt or control) to generate steam, and the steam turbine drives the generator to generate electricity.
At present, the international solar thermal power generation technology usually adopts tower, trough, dish and linear Fresnel, while Kong Zhong Solar Technology Co., Ltd. has realized a unique solution of modular solar tower thermal power generation with independent intellectual property rights through several years of research and engineering technical research, and has realized the localization of related domestic main equipment (mirror field, drive, motor, heat absorber, steam turbine, etc.). ), truly capable of commercial operation. Compared with the traditional technical scheme, this scheme has obvious advantages:
※? Solar energy collection scheme of mirror field has the characteristics of high light efficiency and low cost, but its control and precision technology have always been difficult. Kong Zhong Solar has developed a cross-century revolutionary high-precision mirror field control and tracking system, and applied for a number of invention patents.
※? Modular configuration scheme: the problems of high design cost and nonstandard production cost are greatly reduced. Each module is about 65,438+00 MWe, 36,000 heliostats and 65,438+0 standardized cylindrical radiators, which are located at the top of the standard wind tower. All modules adopt the same design, which makes it possible to produce every part of the heliostat, such as hardware, motor, precision machinery, control module and heat absorber, and greatly reduces the cost.
※? Molten salt thermal storage system: The thermal storage system provided by the central control solar energy scheme is the first thermal storage system in the world that uses molten salt as working medium and can provide flexible thermal storage for power generation. Molten salt heat storage and heat exchange system and 50,000 kW steam turbine power generation system are used for modules 5-6 and above. This configuration can ensure stable power output.
※? Advanced design concept: reduce unit cost, mature technology reduces risk. Kong Zhong Solar always insists on replacing steel with the most advanced design concepts and software, and standardizes common components; Factory production to design the mirror field, so that the cost of the mirror field is minimized. All thermal schemes adopt traditional mature technologies and technologies verified by engineering cases, which reduces the risk of productization.
From the beginning of the design, the scheme not only ensures low cost but also reduces technical risk, so that the first generation solar thermal power generation system currently provided has the lowest construction cost, the lowest implementation risk and the shortest construction speed in the current market.
Solar thermal power generation has a very strong compatibility advantage with existing thermal power plants and power grid systems, which can make full use of existing industrial production capacity and design and operation experience in thermal power field, and has been highly valued by many countries in the world. The latest report of the International Energy Agency predicts that solar thermal power generation will provide global 1 1% electricity in 2050, and the current cost is 20-25%.