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A method for estimating the proportion of direct radiation with double radiometer

A radiometer and irradiation technology, applied in the field of intelligent model algorithm optimization of solar energy and bifacial module tracking systems, can solve problems such as low cost, high reliability, misjudgment of weather conditions, etc.

Active Publication Date: 2022-03-22
TRINA SOLAR CO LTD
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Problems solved by technology

[0008] It can solve the problem of misjudgment of weather conditions in the prior art, with low cost, high reliability and convenient maintenance

Method used

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  • A method for estimating the proportion of direct radiation with double radiometer
  • A method for estimating the proportion of direct radiation with double radiometer
  • A method for estimating the proportion of direct radiation with double radiometer

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Embodiment Construction

[0052]The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0053] In this embodiment, two radiometers are used as an example for illustration. In the case of using more radiometers to collect radiation information, the division of labor of each radiometer in collecting horizontal total radiation and slope total radiation can be assigned according to actual needs.

[0054] Such as figure 1 Shown, the method for inferring direct radiation ratio of the present invention comprises the following steps:

[0055] S1: Use two irradiance meters to collect the total horizontal irradiance and the total irradiance on the slope; specifically, use two irradiance meters to measure the total horizontal irradiance and the total irradiance on the slope as the main input parameters, where the slope The inclination angle can be determined according to the specific project. The fixed inclination angle photovolta...

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Abstract

The invention discloses a method for estimating the proportion of direct radiation, which comprises the following steps: S1: using more than two radiometers to separately collect horizontal total radiation and slope total radiation; S2: preset sunny days according to the horizontal total radiation Index, get the horizontal direct radiation and horizontal diffuse radiation, calculate the theoretical slope radiation according to the slope radiation model; S3: deduce the sunny index, compare the theoretical slope radiation with the measured slope radiation, determine the sunny index range, and finally can Infer the current sunny index by interpolation. The present invention can provide necessary basic radiation information for subsequent data analysis, and can also provide necessary input conditions for calculation of optimal angles of tracking brackets under different weather conditions, such as excluding "pseudo-cloudy" states, and judging "cloudy days are flat", The cost of adding equipment is not high, and it is simple and easy to implement.

Description

technical field [0001] The invention relates to a method for estimating the ratio of radiation, in particular to a method for estimating the ratio of direct radiation with a double irradiance meter, and belongs to the technical field of intelligent model algorithm optimization for solar energy and double-sided module tracking systems. Background technique [0002] The global shortage of fossil energy, the development and utilization of renewable energy has received widespread attention from all walks of life. Solar photovoltaic power generation has developed rapidly in recent years due to its rich resources, wide distribution, and environmental protection. [0003] In order to increase the power generation capacity of photovoltaic systems, photovoltaic power generation technology is constantly innovating. Flat single-axis, inclined single-axis heel and dual-axis tracking systems enable photovoltaic modules to receive more radiation and greatly increase power generation. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J1/00
CPCG01W1/00G01J1/00G06F17/11
Inventor 孙凯赵明高纪凡全鹏黄国昆吴军
Owner TRINA SOLAR CO LTD
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