Method for rapidly judging shade and shielding in solar tower thermal power generating system

A thermal power generation system, tower solar technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as efficient algorithms, to improve accuracy and efficiency, maintain accuracy, and efficient algorithms Effect

Active Publication Date: 2016-09-21
ZHEJIANG UNIV
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AI Technical Summary

Problems solved by technology

However, the traditional 3D-DDA algorithm is aimed at light, and there is no efficient algorithm for the problem of traversing a uniform grid like a beam of light reflected by a heliostat

Method used

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  • Method for rapidly judging shade and shielding in solar tower thermal power generating system
  • Method for rapidly judging shade and shielding in solar tower thermal power generating system
  • Method for rapidly judging shade and shielding in solar tower thermal power generating system

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Embodiment Construction

[0050] In this embodiment, a left-handed global coordinate system is adopted, and the Y axis is upward.

[0051] Such as figure 1 As shown, the method for quickly judging shadows and occlusions in the tower solar thermal power generation system of this embodiment includes the following steps:

[0052] (1) Establish a large bounding box parallel to the axis of the entire heliostat field. Each heliostat 1 builds a small bounding box 2 parallel to the axis. The side length of the small bounding box 2 is equal to the long side of the heliostat 1, and the center is the center of the heliostat 1, so that the small bounding box 2 can permanently surround the heliostat 1, such as figure 2 shown.

[0053] (2) Divide the large bounding box equidistantly along the distribution direction of the heliostats to generate a uniform grid 3. Multiple heliostats are marked with H1, H2, ... Hx respectively, such as Figure 3-5 shown;

[0054] Specifically, divide the large bounding box equidi...

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Abstract

The invention discloses a method for rapidly judging shade and shielding in a solar tower thermal power generating system. The method comprises the following steps of: (1) establishing a big bounding box with parallel axes of the whole heliostat field; (2) equidistantly dividing the big bounding box along the distribution direction of heliostats to generate uniform grids; (3) modeling light pillars reflected by or entering the heliostats; (4) finding out an intersection grid which intersects with each light pillar; (5) judging intersection of the heliostats in the intersection grids and the corresponding light pillars so as to obtain the shade or shielding of the heliostats which form the light pillars. According to the judging method disclosed by the invention, a classic uniform grid data structure in graphics is introduced, the characteristics of regular distribution of the heliostats on the heliostat field are reasonably utilized, the data information in a simulation environment is efficiently organized and the calculation accuracy and the calculation efficiency are effectively improved.

Description

technical field [0001] The invention relates to the technical field of simulation of a tower-type solar thermal power generation system, in particular to a method for quickly judging shadows and occlusions in a tower-type solar thermal power generation system. Background technique [0002] There are often two phenomena that affect the power generation efficiency on the heliostat field of the tower solar thermal power generation system: shadow and shading. Shadow refers to the blockage of adjacent heliostats to the solar light energy that should be incident on the specified heliostat, and occlusion refers to the fact that part of the energy reflected by the heliostat cannot reach the receiver due to the influence of adjacent heliostats. In order to improve power generation efficiency, both phenomena need to be quickly identified and avoided as much as possible. However, for a large heliostat field, to determine the shadow and occlusion relationship between heliostats, the ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06Q50/06
CPCG06F30/20G06Q50/06
Inventor 赵豫红冯结青何才透
Owner ZHEJIANG UNIV
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