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An Optimal Tracking Method for Photovoltaic Tracking System Based on Similar Sun Irradiance Prediction

A tracking system and irradiation technology, applied in the field of photovoltaic tracking system optimization and tracking, can solve the problems of photovoltaic system increase, photovoltaic tracker power loss and other problems

Active Publication Date: 2022-02-11
深圳珈伟低碳科技有限公司
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Problems solved by technology

But in the short term, it is difficult for the first three to make a big breakthrough, so for concentrated photovoltaic systems, sun tracking has more important significance
Existing photovoltaic tracking technology can accurately track the position of the sun, but under cloudy and overcast conditions, photovoltaic tracking may not be able to add additional power generation revenue to the photovoltaic system and the photovoltaic tracker will generate additional power loss

Method used

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  • An Optimal Tracking Method for Photovoltaic Tracking System Based on Similar Sun Irradiance Prediction
  • An Optimal Tracking Method for Photovoltaic Tracking System Based on Similar Sun Irradiance Prediction
  • An Optimal Tracking Method for Photovoltaic Tracking System Based on Similar Sun Irradiance Prediction

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Embodiment Construction

[0063] The present invention is further described below. The following examples are for more clearly explaining the technical solutions of the present invention without limiting the scope of the invention.

[0064] The present invention provides a photovoltaic tracking system optimized tracking method based on similar day radiation prediction, such as figure 1 As shown, the specific is as follows:

[0065] (1) Meteorological data prediction module Gets meteorological data in the test location of the test

[0066] The meteorological data prediction module obtains the average temperature T from 17:00 in the morning to 17 hours to 17 in the morning, and the average rainfall RF, the average wind speed WS, the average relative humidity RH and the average relative humidity RH Sub-chromatic parameters of meteorological parameters 0 , P 0 = [T, RF, WS, RH, CI].

[0067] (2) Horizontal irradiation prediction module calculates the horizontal total radiation distribution and method in the ne...

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Abstract

The invention discloses a photovoltaic tracking system optimization tracking method based on similar daily radiation prediction. By obtaining the meteorological parameters forecasted by the meteorological station for the next day as the base vector, the N-day historical meteorological parameter vectors with the same weather phenomenon are selected, and the k-nearest neighbor method is used. Select the k closest vectors from the base vector to calculate the total horizontal surface radiation and the normal direct radiation distribution on the surface in the next day; through the photovoltaic tracking system, the predetermined tracking strategy, the geometric relationship between the sun-tracking system-ground, and the scattered radiation model, Calculate the distribution of direct and diffuse radiation on the surface of the photovoltaic tracking system; finally, comprehensively evaluate the power generation and power consumption of the photovoltaic tracking system, the optimal inclination installation and the power generation of the horizontally installed photovoltaic system, and choose the best operation mode for the next day. The invention can calculate and compare the difference in power generation under different installation modes at the measurement location, balance the power generation and power consumption of the photovoltaic tracking system, and obtain the operation mode of the photovoltaic tracking system with the best power generation cost.

Description

Technical field [0001] The present invention relates to an optimization tracking method of photovoltaic tracking system based on similar day radiation prediction, belonging to the technical field of solar photovoltaic system applications. [0002] technical background [0003] At present, the main method of improving the efficiency of photovoltaic power generation system is: improve battery efficiency, using maximum working power point tracking technology, develop new photovoltaic components and sun tracking. However, in the short term, the top three is difficult to have a big breakthrough, so there is more important significance for the concentrating photovoltaic system. The existing photovoltaic tracking technology can accurately track the sun position, but under cloudy and cloudy conditions, photovoltaic tracking may not increase additional power generation revenue to the photovoltaic system and the photovoltaic tracker produces additional electrical energy loss. There is there...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04G05D3/12
Inventor 祝曾伟张臻刘富光张起源李沁书杨旭
Owner 深圳珈伟低碳科技有限公司
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