A method for correcting installation errors of solar thermal power generation heliostats

Abstract

The invention relates to a method for calculating the angle of a heliostat and correcting installation errors, which calculates the horizontal azimuth and pitch of the heliostat based on the angular relationship between the position of the heliostat, the position of the focusing target, and the position of the sun when focusing The actual angle of the angle, and the relationship between the actual angle and the theoretical angle of the heliostat obtained by adjusting the concentration at multiple time points in a day, deduces and calculates the relationship between the initial position of the heliostat installation and the theoretical position. The initially installed heliostat calculates the correction relationship through the above correction process. When the heliostat local control cabinet works, the program calculates the theoretical angle of the heliostat when concentrating, and converts the correction relationship into the actual angle and drives the motor to execute. , the adjustment of the target angle is completed by the closed-loop control of the heliostat angle. The method is convenient and quick to implement, has little dependence on instruments and equipment, solves the problem that the light-gathering control error is difficult to eliminate due to the installation error of the heliostat, and improves the light-gathering accuracy.

Description

technical field [0001] The invention belongs to the technical field of solar thermal power generation, and relates to a method for correcting installation errors of heliostats for solar thermal power generation. Background technique [0002] The concentrating system of the tower solar thermal power station is mainly composed of a large number of biaxial sun tracking mirrors (heliostats) and concentrating towers. The heat collector is heated, and the heat transfer medium in the heat collector heats up to exchange heat with the surface water system to generate steam to drive the turbogenerator to generate electricity. [0003] The power generation of tower solar thermal power station has higher working temperature and higher power generation efficiency, and has greater advantages compared with trough solar thermal power generation, Fresnel solar thermal power generation and butterfly solar thermal power generation, but due to The tower-type photothermal power generation occup...

AI Technical Summary

Problems solved by technology

[0003] The power generation of tower solar thermal power station has higher working temperature and higher power generation efficiency, and has greater advantages compared with trough solar thermal power generation, Fresnel solar thermal power generation and butterfly solar thermal power generation, but due to The tower-type photothermal power generation occupies a large area, and it needs to gather sunlight to the collector of the concentrating tower. Each heliostat needs to be controlled separately. The distance between the heliostats is long and the control accuracy is high. Precision, control system, etc. have very high requirements, and the implementation cost is relatively high

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