Independent photovoltaic power station with self-circulation expansion

Abstract

The invention relates to a self-circulation expanded independent photovoltaic power station comprising a photovoltaic power station and a compressed air energy-storage power generation system. The photovoltaic power station comprises an expandable photovoltaic panel module and a photovoltaic cell manufacturing system. Power output by the expandable photovoltaic panel module includes two parts; one part is transmitted to the photovoltaic cell manufacturing system for use; the other part is transmitted to the compressed air energy-storage power generation system and converted into compressed air energy to be stored; the compressed air energy-storage power generation system converts the stored compressed air energy into electric energy that is transmitted to the photovoltaic cell manufacturing system of the photovoltaic power station for use; photovoltaic panels manufactured by the photovoltaic cell manufacturing system are provided for the expandable photovoltaic panel module in order to expand generating capacity of the photovoltaic power station. The self-circulation expanded independent photovoltaic power station is capable of generating power continuously, has lower power generation cost than the existing energy power generation ways, and is actually significant to promoting the development of future photovoltaic power generation systems.

Description

【Technical field】 [0001] The invention relates to a photovoltaic power station, in particular to a self-circulating expansion independent photovoltaic power station. 【Background technique】 [0002] Photovoltaic power generation is a very longed-for life for human beings. In the true sense, the future photovoltaic power generation system must meet three requirements: 1. The photovoltaic power generation system can continuously generate electricity when there is no light, and the existing energy generation is in an auxiliary position. 2. The electricity cost of photovoltaic power generation 3. A system with strong solar energy transmission capacity. [0003] The characteristics of solar energy are: 1. The dispersion of solar energy, with only 1000 watts of energy per square meter; 2. The difference between day and night sunlight, and the difference in the duration of sunlight in different areas, such as; 1 times, 3, the difference in the longest continuous no-light duration i...

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Problems solved by technology

[0005] Chinese Patent No. 201120413107.0 is a container-loaded independent solar mobile power station, and Chinese Patent No. 201020276816.9 is an independent power generation system for solar pastures. It proposes a technical solution for disconnecting from the grid, but it cannot achieve continuous power generation

[0007] 1. The photoelectric conversion efficiency of photovoltaic cells is only one of the technical indicators. Even if the photoelectric conversion efficiency is good, the final power generation effect may not be good due to the poor allocation of solar energy utilization system resources. For example, the distributed photovoltaic power plants currently promoted, due to The duration of sunlight varies from region to region, and batteries with low efficiency installed in regions with long duration of sunlight generate more electricity than batteries with high efficiency installed in regions with short duration of sunlight

[0008] 2. The main cost of battery products in the photovoltaic industry is the cost of power consumption. According to the existing technology, the photovoltaic industry system and the photovoltaic power station system can also be integrated. When there is light, the power of the photovoltaic power station is used to manufacture photovoltaic battery products, and when there is no light, electricity is used Grid system power, but this cost reduction is limited, because the manufacturing process mainly consumes grid system power

[0009] 3. An important technology for photovoltaic power generation systems to maintain continuous power generation is energy storage power generation technology. There are many energy storage technology methods in the existing technology. Chemical energy storage methods are not feasible in photovoltaic power generation systems due to energy storage capacity and environmental protection requirements. At present, the widely recognized technology is compressed air energy storage power generation. For example, there have been reports abroad that photovoltaic power station energy storage power generation systems store compressed air in caves and mines; however, existing compressed air energy storage power generation systems have electricity-gas -The problem of low power conversion efficiency

According to the existing technology, the photovoltaic power station system and the compressed air energy storage power generation system can be integrated together, and the remaining excess power supplied by the photovoltaic power station system to the power grid is supplied to the compressed air energy storage power generation system and converted into compressed air energy for storage, and the power grid needs electricity Convert the energy of the compressed air into electricity to supply the grid; although this solution can maintain continuous power supply, the cost of photovoltaic cells used in photovoltaic power stations is still the existing cost

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