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System and method for positioning heliostat

A technology for positioning systems and heliostats, applied in the direction of light radiation generators, feedback control, generators/motors, etc., can solve problems such as inaccurate positioning coordinates of heliostats

Inactive Publication Date: 2012-05-09
ZHEJIANG SUPCON SOLAR TECHNOLOGY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In order to solve the current problem of inaccurate positioning coordinates of heliostats, the present invention provides a high-precision heliostat positioning system and method

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  • System and method for positioning heliostat
  • System and method for positioning heliostat
  • System and method for positioning heliostat

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Embodiment Construction

[0052] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. The embodiments and examples listed in the present invention are only for the purpose of illustration, so that those skilled in the art can better understand and implement the present invention, and are not intended to limit the scope of protection defined by the claims.

[0053] The invention provides a heliostat positioning system, such as figure 1 As shown, the system includes:

[0054] Central receiver 1 for collecting solar radiation energy;

[0055] heliostat 2 for reflecting sunlight to the central receiver 1;

[0056] The two-dimensional servo system platform 3 is arranged at the four corners of the mirror field, and can rotate along the horizontal and pitch directions around two mutually intersecting vertical axes, thereby driving the laser distance measuring device 5 fixed on the platform 3 to rotate;

[0057] CCD detector 4, is arra...

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Abstract

The invention discloses a system for positioning a heliostat. The system comprises a central receiver, the heliostat, a two-dimensional servo system platform, a CCD (Charge Coupled Device) detector, a laser ranging device, a main controller, a flash light emitter and a total reflecting prism. The invention further discloses a method for positioning the heliostat based on the system. The method comprises the following steps of: (1) adjusting the two-dimensional angle of the laser ranging device by using the two-dimensional servo system platform; (2) capturing the heliostat to be measured by using the CCD detector and the flash light emitter; (3) judging the size of the deviation between a laser facula and the center point of the heliostat by using the CCD detector, and controlling and rotating the two-dimensional servo system platform to adjust laser, so that the laser can shot the center of the heliostat; (4) measuring the distance from a laser emission point to the center point of the heliostat by using the laser ranging device; and (5) repeating the steps (1) to (4) to obtain the actual coordinates of the center point of the heliostat according to the distance from the laser ranging device to the center point of the heliostat and the position coordinates of the laser ranging device. According to the system and the method disclosed by the invention, the actual coordinates of the heliostat can be accurately calculated so as to accurately position the heliostat.

Description

field of invention [0001] The invention relates to the field of solar thermal power generation, in particular to a positioning system and method for a heliostat in tower-type solar thermal power generation. Background technique [0002] Tower-type solar thermal power generation uses thousands of heliostats to reflect sunlight to the central receiver on the top of the receiving tower, heating the working fluid in the receiver to generate steam to drive steam turbines and generators to generate electricity. Only when the heliostat accurately tracks the change of the sun’s position can the energy of the solar spot be accurately concentrated on the receiver, and the key to ensure the accurate tracking of the heliostat is the precise positioning of the heliostat, that is, the position coordinates of the heliostat must be accurate. [0003] Currently, there are several methods for obtaining the coordinates of a heliostat: [0004] 1. In the initial stage of the construction of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D3/12H02N6/00
Inventor 黄文君朱晓明祝雪妹项翀
Owner ZHEJIANG SUPCON SOLAR TECHNOLOGY CO LTD
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