A geometrical calibration method of a dish stirling solar dish column

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 ...

AI Technical Summary

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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