A geometrical calibration method of a dish stirling solar dish column

A technology of geometric calibration and solar energy, applied in the direction of using feedback control, etc., can solve the problems of deviation tracking, installation error of dish support column, equipment unable to achieve sun tracking, etc., to achieve the effect of high efficiency and high precision

Active Publication Date: 2019-11-05
ZHEJIANG UNIV OF TECH
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Problems solved by technology

However, after the installation of the equipment is completed, due to the installation error of the support column on the dish surface, there is a deviation between the coordinate system of the solar tracking system and the ground coordinate system, so the equipment cannot achieve high-precision sun tracking and deviation from tracking occurs.

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  • A geometrical calibration method of a dish stirling solar dish column
  • A geometrical calibration method of a dish stirling solar dish column
  • A geometrical calibration method of a dish stirling solar dish column

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the drawings.

[0039] Reference figure 1 , A method for geometric calibration of the dish-type Stirling solar dish surface column, including the following steps:

[0040] 1) Collect operating data of the dish tracking system: After the equipment has the power generation conditions, the operator forces the equipment to start the sun tracking system and the power generation system, and collect the sun position data in the sun tracking system and the actual sun track data. If deviation from tracking occurs during data collection, the system is forced to start again until the data collection is completed. The collection process requires at least 3 hours of power generation operation data.

[0041] 2) Column deviation fitting: The fitting of column deviation essentially refers to the transformation relationship between the coordinate system of the tracking system and the ground coordinate system. In this ...

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Abstract

Provided is a disc type Stirling solar disc surface column geometric calibration method. The method includes the following steps: 1) after equipment has power generation conditions, an operator forcefully starts an equipment sun-tracking system and a power generation system to collect sun position data in the sun-tracking system and sun trace data in reality; 2) fitting of column deviation is essentially a conversion relationship between a coordinate system of the sun-tracking system and a ground coordinate system, fitting of the conversion relationship between the two coordinate systems is performed by means of the data in the step 1) and through a least square method, and then a deviation value of a column is obtained; 3) the deviation value is input to an equipment control system, that is to say, the system obtains the conversion relationship between the coordinate system of the sun-tracking system and the ground coordinate system, so high-precision sun tracking is realized; and 4) whether the sun-tracking system deviates again is determined, the system is started again after the fit deviation of the column is input, and the running state of the system is observed. The method is high in efficiency and high in precision.

Description

Technical field [0001] The invention belongs to the field of solar concentrating thermal power generation, more specifically the sun tracking technology in the field of dish-type Stirling concentrating thermal power generation, in particular to a geometric calibration method of the dish-type Stirling solar dish surface column. Background technique [0002] Due to the continuous consumption of fossil energy and environmental pollution, the development and utilization of solar energy has received more and more attention. Among the current solar energy utilization technologies, the dish-type Stirling concentrating solar energy has the highest photoelectric conversion efficiency. It uses a dual-axis tracker to drive a giant parabolic dish to track the sun, thereby obtaining a radiation source that drives the Stirling engine and generator to operate. Among them, high-precision sun tracking is the key to the stable and automatic operation of the equipment. This tracking system uses a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D3/12
CPCG05D3/12
Inventor 许金山陈泳任李松钟琪张子龙
Owner ZHEJIANG UNIV OF TECH
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