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Method for building solar power station model through shade analysis

A technology of solar energy and solar components, applied in the field of solar power plant modeling, can solve problems such as not being the optimal design scheme of solar power plants, not being able to calculate the shadow of solar components, and reducing the conversion efficiency of power plants, so as to promote desertification design and ensure scientific layout , The effect of maximizing conversion efficiency

Active Publication Date: 2011-08-24
POWERCHINA HEBEI ELECTRIC POWER SURVEY & DESIGN INST CO LTD
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Problems solved by technology

Therefore, there are currently only two arrangements for the construction of solar power plants. One is to eliminate the influence of shadows by increasing the distance between solar modules, which will inevitably increase the project's footprint; Some shadows are allowed on the ground, this arrangement will inevitably lead to a reduction in the conversion efficiency of the entire power station
Undoubtedly, neither of these two layout forms is the optimal design scheme for solar power plant construction.
[0004] Moreover, the current manual calculation method has the following disadvantages: 1) It can only calculate the shadow length at 9 am on the winter solstice day; 2) It can only be used to calculate the shadow in the plane terrain; The shadow between the moving solar modules cannot be calculated
However, with the rapid development of the solar photovoltaic field and people's great demand for electricity, it is no longer enough to build solar power stations in flat terrain.

Method used

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  • Method for building solar power station model through shade analysis
  • Method for building solar power station model through shade analysis

Examples

Experimental program
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Effect test

Embodiment

[0046] For example, the latitude Build a solar power plant at a position of 39°. There is a tree in the solar power plant construction area with a height D of 5 meters. Calculate the shadow of the tree in the north direction at 9 am on January 1.

[0047] First, according to the formula δ=23.45sin(360*(1+284) / 365), the declination angle δ=-23.0116° on January 1st is calculated;

[0048] Secondly, put δ=-23.0116°, hour angle=45° into the following formula

[0049] α=arcsin(sin 39°*sin 23.0116°+cos39°cos 23.0116°cos 45°)

[0050] Calculate the sun altitude angle α=15.05726°;

[0051] Then put the calculated declination angle δ, hour angle ω and solar altitude angle α into the following formula

[0052] γ=arcsin(cos 23.0116°*sin45° / cos15.05726°)

[0053] Calculate the solar azimuth γ=42.37492°;

[0054] Put the sun altitude angle α=15.05726° and the obstacle height D into the formula L=5 / tan(15.05726°), and calculate the shadow length of the tree L=18.58594m;

[0055] Fina...

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Abstract

The invention discloses a method for building a solar power station model through shade analysis. The method comprises the following steps of: acquiring terrain data, obstacle data and solar power module data; drawing a shadow distribution map; building an initial solar power station model; and analyzing and calculating shade after the model is built. In the method, according to the influence of terrain, buildings and other obstacles constructed by humans on a solar power module, optimal arrangement of the solar power module is achieved to ensure scientific layout and maximize conversion efficiency of the solar power module.

Description

technical field [0001] The invention relates to the field of solar power station construction, in particular to a method for modeling the solar station by shadow analysis in the design of the solar station. Background technique [0002] A solar power station is a device that uses solar cell components to convert sunlight into electrical energy. It is a clean and renewable energy source for the earth. With the rapid development of solar cell components, the construction of solar power plants is also changing with each passing day. In the design process of solar power plants, one of the most critical steps is to arrange the energy-receiving elements, that is, solar cell components, to minimize shadow occlusion. , so as to maximize the use of solar energy. [0003] At present, in the design of solar power plants, solar modules are generally arranged in a flat terrain. When calculating the shadow, the staff combined the fixed solar modules and manually derived the projection o...

Claims

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Application Information

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IPC IPC(8): G06T17/00G06T15/60H02N6/00H02S10/00
CPCY02B10/10Y02E10/50
Inventor 张晓威
Owner POWERCHINA HEBEI ELECTRIC POWER SURVEY & DESIGN INST CO LTD
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