A calibration system and method for heliostat installation and transmission errors
A technology of transmission error and calibration system, applied in the field of solar energy application, can solve the problem of time-consuming and laborious heliostat, and achieve the effect of increasing calibration efficiency, preventing irradiation interference and avoiding errors
Active Publication Date: 2022-02-11
XIAN MICROELECTRONICS TECH INST
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Problems solved by technology
Due to the large number of heliostats, ranging from thousands to tens of thousands, manually calibrating the motion error of each heliostat is a time-consuming and laborious work, and an automatic error calibration method is very necessary
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[0042] The present invention is described in further detail below in conjunction with accompanying drawing:
[0043] Such as figure 1 with figure 2As shown, each heliostat 1 has two degrees of freedom of motion, pitch and horizontal rotation, and the pitch and horizontal rotation are associated with two single-turn absolute value type rotary encoders respectively, and each heliostat 1 is opposite to Since the absorption tower 2 has a definite orientation, each heliostat 1 also has a set of orientation calculation unit and servo drive unit, the servo drive unit is used to drive the rotation of the heliostat 1 in the horizontal and pitch directions; the orientation calculation unit It is used to calculate the azimuth angle of the heliostat 1 at different times and output the information to the servo drive unit at the same time. During the calibration work process, the orientation settlement unit regularly reads the readings of the angle encoder and saves it, and the input end...
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The invention discloses a calibration system and method for heliostat installation and transmission error, comprising an absorption tower, a calibration pulse unit, a heliostat and a central control computer; A circle of photoelectric receivers; each group of photoelectric receivers includes a number of vertically arranged pitch receivers and rotary receivers; the pitch receivers and rotary receivers are connected to the calibration pulse unit, and the calibration pulse unit is provided with a calibration timer that is connected interactively And the processor, the processor is interactively connected with the central control computer; the heliostat is equipped with a laser transmitter, an azimuth calculation unit, an angle encoder and a servo drive unit; the laser is perpendicular to the mirror surface; the servo drive unit is used to drive the heliostat horizontally and the rotation in the pitch direction; the azimuth calculation unit is used to regularly read and save the reading of the angle encoder; the azimuth calculation unit is connected to the servo drive unit; the central control computer is connected to the azimuth calculation unit. The automatic calibration of the heliostat is realized.
Description
technical field [0001] The invention belongs to the field of solar energy applications, and relates to a calibration system and method for heliostat installation and transmission errors. Background technique [0002] The tower-type solar thermal power station uses reflectors (heliostats) to reflect sunlight and gather it at one point to form a local high temperature, heat the appropriate working medium at high temperature, and then generate high-temperature and high-pressure water vapor to drive the steam turbine to generate electricity. [0003] As the sun moves, the angle of the heliostat needs to be constantly adjusted so that the reflected sunlight always converges on the top of the absorption tower. A large number of heliostats are arranged around the absorption tower, and each heliostat can independently perform two degrees of freedom of rotation and pitch, so that it can point to any direction in space. Associated with a degree of freedom of movement or used to deter...
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IPC IPC(8): G05D3/12
Inventor徐宏坤贺占庄杨乐
OwnerXIAN MICROELECTRONICS TECH INST