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Process for measuring tracking precision of photovoltaic tracking system based on vector decomposition method

A measurement method and tracking system technology, applied in the directions of measurement device, measurement angle, surveying and navigation, etc., can solve problems such as the test method that pays less attention to the feasibility and tracking accuracy of the sun position calculation method, and achieve the effect of saving test installation time.

Active Publication Date: 2012-10-17
STATE GRID CORP OF CHINA +1
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Problems solved by technology

And many algorithms mainly focus on how to accurately calculate the sun position parameters so that the designed photovoltaic tracking system can track better, but these literatures pay less attention to the feasibility of the sun position calculation method and the test method of tracking accuracy, that is, The angle between the incident light and the photovoltaic module

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  • Process for measuring tracking precision of photovoltaic tracking system based on vector decomposition method
  • Process for measuring tracking precision of photovoltaic tracking system based on vector decomposition method
  • Process for measuring tracking precision of photovoltaic tracking system based on vector decomposition method

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Embodiment Construction

[0042] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0043] Measurement method flow process of the present invention is as figure 1 As shown, first, use the compass to determine the orientation of the photovoltaic module installation, use the theodolite to determine the geographical location of the installation of the photovoltaic module, and determine the orientation of the installation to the south. Secondly, to judge the photovoltaic system, for the single-axis photovoltaic tracking system, when using the electronic protractor to determine the elevation angle of the photovoltaic module, test its all-day azimuth operation, and use the computer to record the test date and test results; for the dual-axis photovoltaic tracking system, test Its all-day azimuth and elevation angle operation, use the computer to record the test date and test results. The test results are calc...

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Abstract

The invention discloses a process for measuring the tracking precision of a photovoltaic tracking system based on a vector decomposition method. The process comprises the following steps: determining the mounting position and the mounting orientation of a photovoltaic assembly; judging which photovoltaic system is used, determining the elevation angle of the photovoltaic assembly through using an electronic protractor, testing the all-day azimuth operation case of the photovoltaic assembly and recording the test date and the test result if it is a single-axis photovoltaic tracking system, and testing the all-day azimuth operation and elevation angle operation case of the photovoltaic assembly and recording the test data and the test result if it is a double-axis photovoltaic tracking system; and calculating and determining the test result through utilizing the vector decomposition method to obtain the tracking precision of the photovoltaic system. The method has the advantages of no affection by the weather, no need of mounting of equipment on the photovoltaic assembly, and test and mounting time saving. The method allows coordinate transformation to be carried out as needs to satisfy test requirements of different single-axis tracking systems.

Description

technical field [0001] The invention relates to the field of power systems, in particular to a method for measuring tracking accuracy of a photovoltaic tracking system based on a vector decomposition method. Background technique [0002] In order to increase the power generation capacity of the photovoltaic system within the same period of time, a tracking photovoltaic power generation system is usually used. By tracking the position of the sun to increase the daily power generation of the photovoltaic system. Therefore, the difference in tracking accuracy of the solar position by the photovoltaic tracking system will be directly related to the daily power generation of the photovoltaic power generation system. Accurately measuring the tracking accuracy of the photovoltaic tracking system will be of great significance for evaluating the power generation of the photovoltaic power generation system. [0003] At present, in terms of photovoltaic tracking accuracy testing, som...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C1/00
Inventor 董颖华黄晶生刘美茵牛晨晖
Owner STATE GRID CORP OF CHINA
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