A method for calculating and controlling the angle of a solar thermal power generation heliostat
A control method and angle calculation technology, applied in the direction of control using feedback, which can solve the problems of reduced power generation efficiency and high requirements.
Active Publication Date: 2019-12-13
NORTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP +1
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[0005] However, the disadvantages of tower-type photothermal are also obvious: in order to accurately gather sunlight to the receiver on the top of the heat-collecting tower, the dual-axis tracking system of each heliostat must be individually controlled, and the algorithm and control accuracy must be controlled independently. , concentrating effect and other requirements are very high, while the single-axis tracking system of the trough system is much simpler in structure and control; Leading to a sharp drop in power generation efficiency; for this reason, there is an urgent need for a method based on optical reflection principles and space model derivation algorithms to accurately calculate and control the angle of heliostats in solar tower photothermal power generation systems
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[0052] See Figure 1~4 , The present invention relates to a method for calculating and controlling the angle of a solar thermal power generation heliostat. The method includes the following steps:
[0053] Step 1. Input the geographic location information of the heliostat and the concentrating target into the processor; the geographic location information includes longitude, latitude and altitude, which can be obtained by a high-precision theodolite;
[0054] Step 2. Calculation of the azimuth and altitude angle of the heliostat:
[0055] Step 2.1. Take the heliostat position 2 at the center of the heliostat in step 1 as the origin, and set up a three-dimensional coordinate system with the positive east as the positive X direction, the south as the positive direction Y, and the positive direction as the positive Z direction. The coordinates of the center of the heliostat is O (0, 0, 0), and the center position 3 of the concentrating target is marked as the mark point two B. The coor...
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The invention discloses a solar photo-thermal power generation heliostat angle calculation and control method which comprises the following steps: 1, inputting geological position information of a heliostat and a light focusing target into a processor, wherein the geological position information comprises longitudes, dimensions and altitudes; 2, calculating a direction angle and a height angle of the heliostat according to a spatial three-dimensional coordinate system and a spatial spherical surface reference coordinate system; 3, adjusting the heliostat according to the direction angle and the height angle, which are acquired in the step 2, of the heliostat. The solar photo-thermal power generation heliostat angle calculation and control method disclosed by the invention has the advantages of high precision.
Description
Technical field [0001] The invention relates to a method for calculating and controlling the angle of a heliostat in a solar thermal power generation system, in particular to a method for calculating and controlling the angle of a heliostat based on the principle of optical reflection and a space model The control method is used for the heliostat to calculate the level and azimuth angle of the reflected light spot to accurately condense the light according to its geographic coordinate position, condensing target position, and sun position, and then complete the heliostat tracking and condensing through the motor-driven heliostat angle . Background technique [0002] At present, the tower CSP station adopts the "light-thermal-electric" power generation method based on the principle of solar thermal power generation. Thousands of heliostats reflect sunlight to the surface of the heat sink on the top of the solar tower to form 800 High temperature above ℃; steam above 500℃ is gener...
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IPC IPC(8): G05D3/12
CPCG05D3/12
Inventor 仇韬吴敏军
Owner NORTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP