A simulation method of heliostat field for solar thermal power generation

Abstract

The invention discloses a heliostat field simulation method for CSP, which comprises the following steps: 1), calculating a sunlight incidence direction at the current location according to time and geographic information; 2), generating a random point on a solar disk, and calculating an actual incidence direction at the random point according to the sunlight incidence direction; 3), according to the actual incidence direction, calculating the emergent radiation energy of each random point by using a sun-shaped model; 4), according to a meteorological radiation model, calculating the actual radiation energy after the emergent radiation energy passes through the atmosphere and enters the ground; 5), using the monte carlo method to sample the direction of each reflection ray of the heliostat; 6), according to the actual radiation energy and the directions of the reflection rays, using a micro plane reflection model to calculate the light ray energy of each reflection ray; and 7), according to the light ray energy of each reflection ray and the path length between the heliostat and a receiver, calculating energy attenuation to obtain the final energy.

Description

technical field [0001] The invention relates to the fields of computer graphics drawing, meteorology and geometric optics, in particular to a field simulation method for solar thermal power generation heliostats. Background technique [0002] Energy and environmental issues are two prominent issues restricting the sustainable development of the world economy and society. In China, the stock of exploited energy such as oil, natural gas, and coal is very limited, and the per capita energy extraction is far below the world average level. Energy depletion and environmental degradation have become reality that we must face. Solar energy has the advantages of unlimited reserves, widespread existence, clean use, and economic development. Effective use of solar energy can not only alleviate my country's energy problems and reduce emissions of harmful gases such as carbon dioxide, but also play a vital role in protecting the ecological environment and ensuring economic development. S...

AI Technical Summary

Problems solved by technology

Because the existing simulation system does not effectively utilize the new generation of GPU acceleration, the calculation time for large mirror fields is very long; and the use of simple ray tracing algorithm ideas does not consider the impact of global illumination, and the calculation accuracy is far from the implementation results. , resulting in a large error in the simulation, they are becoming more and more difficult for the simulation work of the thermal power generation system in the new era

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