Method for calculating reduction of tower type power generation radiation from heliostat to absorber and medium

Abstract

The invention relates to a method for calculating reduction of tower type power generation radiation from a heliostat to an absorber, which comprises the following steps: acquiring the atmospheric transmissivity of the height of the heliostat of a tower-type solar power station and the atmospheric transmissivity of the height of the absorber of the tower-type solar power station; according to the atmospheric transmissivity of the height where the heliostat is located, the atmospheric transmissivity of the height where the absorber is located and the solar altitude angle at the current moment, calculating the atmospheric transmissivity within the vertical distance from the heliostat to the absorber; calculating the atmospheric transmissivity within the linear distance from the heliostat to the absorber according to the atmospheric transmissivity within the vertical distance from the heliostat to the absorber, the vertical distance from the heliostat to the absorber and the horizontal distance from the heliostat to the absorber; and calculating the reduction coefficient of solar radiation energy from the heliostat to the absorber according to the atmospheric transmissivity within the linear distance from the heliostat to the absorber.

Description

technical field [0001] The invention relates to the field of meteorological technology, in particular to a method for calculating the reduction of tower-type power generation radiation between a heliostat and an absorber, and a computer-readable medium. Background technique [0002] Tower solar power station (such as tower solar thermal power station) is a form of solar power generation at present. It has the advantages of stable output power, flexible adjustment, 24-hour continuous power generation, and peak regulation according to grid load demand. [0003] refer to figure 1 , the tower-type solar power plant includes a heliostat 1 located on the ground, and an absorber 2 installed at a higher position (such as the top of the tower). The solar radiation is transmitted to the heliostat 1 on the ground through the entire layer of the atmosphere, and then After being reflected by the heliostat 1, it is focused to the absorber 2, and absorbed and utilized by the absorber 2, a...

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Problems solved by technology

[0004] In tower-type solar power plants (such as large and medium-sized tower-type solar power plants), the distance between the heliostat 1 and the absorber 2 is often very large (such as 200m to 2000m, or even more than 2000m), and such a long distance, The solar radiation energy will be absorbed by the atmosphere during the transmission from the heliostat 1 to the heat absorber, which will directly affect the power generation efficiency to a large extent

[0005] The above absorption can be reflected by the reduction coefficient of solar radiation energy from the tower solar power station heliostat to the absorber, so if the above reduction coefficient cannot be accurately determined, it will affect the management of the tower solar power station

However, there is currently no effective method to calculate the above reduction factor

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