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A Fitting Method for the Relationship between Sunshine Radiation Value and Sunshine Hours in Southern Tibet

A technology of radiation value and sunshine time, applied in the field of meteorological detection, can solve problems such as lack of solar energy, and achieve the effects of low cost, good application prospect and simple test method

Active Publication Date: 2017-07-21
SOUTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP CORP
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Problems solved by technology

The calculation of solar resource assessment parameters is mainly based on solar radiation elements such as total radiation, diffuse radiation, and direct radiation. However, only the first-level meteorological stations in my country observe solar radiation elements, and most areas in southern Tibet do not conduct solar radiation observations. Lack of necessary data for solar resource assessment

Method used

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Embodiment Construction

[0023] A method for fitting the relationship between sunshine radiation value and sunshine hours in southern Tibet according to the present invention comprises the following steps:

[0024] Step 1: divide a period of time into N time periods, the duration of each time period is t, and use the sunshine sensing device to obtain the sunshine time of each time period;

[0025] Step 2: In each time period with a duration of t, the solar radiation value is measured by radiation observation equipment, and the solar radiation value includes the total radiation value and / or the scattered radiation value and / or the direct radiation value;

[0026] Step 3: Calculate the monthly total amount of each month or the daily total amount, total radiation value and / or diffuse radiation value and / or direct radiation value of each day of sunshine time according to the time period and the duration of each time period t Monthly total for each month or daily total for each day;

[0027] In the above,...

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Abstract

The invention provides a method for fitting the relation between a sunshine radiation value and sunshine duration in the southern Tibet area. The sunshine duration and the sunshine radiation value in the southern Tibet area are measured, the fitting relation between the sunshine duration and the sunshine radiation value is surveyed for providing a solar energy resource correct evaluation method used when solar radiation actual measurement data do not exist in the area. The method is of important significance in the solar energy development in the southern Tibet area.

Description

technical field [0001] The invention relates to the field of meteorological detection, in particular to a fitting method for the relationship between sunshine radiation value and sunshine hours in southern Tibet. Background technique [0002] In the design of solar thermal power generation engineering systems, the amount of solar radiation, especially the amount of direct radiation, is a key parameter in system design. Direct solar radiation is an important part of total solar radiation. From the perspective of observation or measurement, direct solar radiation usually includes radiation perpendicular to the sun's surface (viewing angle of about 0.5°) and diffuse radiation from a narrow ring-shaped sky around the sun (circumsolar scattering). The measurement of direct solar radiation intensity or irradiance is of great value in meteorological detection, solar energy utilization and other fields related to solar radiation. [0003] The Qinghai-Tibet Plateau accounts for abo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01W1/00
Inventor 王国羽谭绒黄帅刘渝
Owner SOUTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP CORP
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