Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for measuring peak sunshine hours

A measurement method and technology of hours, applied in the field of measurement, can solve problems such as inconvenient design, photovoltaic system design, and inability to solve weak light output deviations, and achieve the effects of accurate design, good application prospects, and simple testing methods

Inactive Publication Date: 2011-05-04
CSI CELLS CO LTD +6
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the measurement method of the meteorological department cannot solve the problem of output deviation in low light, which brings inconvenience to the design of photovoltaic systems
[0005] On the other hand, the data provided by the meteorological department are in kcal / m 2 、kwh / m 2 In the design of photovoltaic system, it is more convenient to directly use the peak sunshine hours to design. Therefore, it is usually necessary to convert the above solar radiation into peak sunshine hours before using it, which also brings a lot of problems to the design. inconvenient

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for measuring peak sunshine hours, comprising the steps of:

[0024] (1) Using a calibrated standard solar cell, divide each day into N time periods, the duration of each time period is t, measure the instantaneous radiation intensity S of each time period, then the daily radiation amount is Q=NSt, and the corresponding The daily peak sunshine hours are Hp=NSt / 1000;

[0025] (2) Obtain the daily average peak sunshine hours and annual average peak sunshine hours of each month according to the method of averaging;

[0026] (3) Store and export the above-mentioned daily peak sunshine hours, monthly average peak sunshine hours and annual average peak sunshine hours data.

[0027] In the above technical scheme, the instantaneous radiation intensity S in the step (1) is calculated according to the following formula:

[0028] S=1000×I SC1 ×[1+α(T-25)] / I SC2

[0029] Among them: I SC1 is the instantaneous short-circuit current of the standard solar cell, in A; α ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for measuring peak sunshine hours, which comprises the following steps: (1) using calibrated standard solar cells to divide each day into N time periods with a duration of t and measuring instantaneous radiation intensity S of each time period, wherein the daily radiation quantity can be calculated according to an equation that Q is equal to N,S and t and the corresponding daily peak sunshine hours can be calculated according to an equation that Hp is equal to NST / 1,000; (2) obtaining daily average peak sunshine hours of each month and yearly average peak sunshine hours by using an averaging method; and (3) storing and exporting the data on the daily peak sunshine hours, monthly average peak sunshine hours and yearly average peak sunshine hours. The methodcan directly obtain peak sunshine hours and make photovoltaic system design more visual and convenient.

Description

technical field [0001] The invention relates to a measuring method, in particular to a measuring method of peak sunshine hours. Background technique [0002] In photovoltaic system design, solar radiation is a key parameter in system design. At present, the solar radiation is mainly based on the radiation parameters provided by the meteorological department. These data are generally obtained by measuring with a solar radiation measuring instrument. The sensor used by the solar radiation measuring instrument is an electric heating pile. Under different spectral frequency bands and different radiation intensities, There is a big difference in the response of the electric heating pile and the solar cell to the radiation intensity. Therefore, using the radiation data obtained by the electric heating pile sensor as the design basis of the solar power generation system will inevitably cause the design deviation of the power generation system. [0003] For the deviation of the dat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01W1/12
CPCY02A90/10
Inventor 闫广川
Owner CSI CELLS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com