CN108173519A - A kind of method of automatic detection photovoltaic panel cleannes - Google Patents
A kind of method of automatic detection photovoltaic panel cleannes Download PDFInfo
- Publication number
- CN108173519A CN108173519A CN201810238581.0A CN201810238581A CN108173519A CN 108173519 A CN108173519 A CN 108173519A CN 201810238581 A CN201810238581 A CN 201810238581A CN 108173519 A CN108173519 A CN 108173519A
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- China
- Prior art keywords
- photovoltaic panel
- cleannes
- reference group
- voltage
- illumination
- Prior art date
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- Pending
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000001514 detection method Methods 0.000 title claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims abstract description 16
- 238000005286 illumination Methods 0.000 claims abstract description 13
- 239000000428 dust Substances 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims 1
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000010248 power generation Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/10—Cleaning arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a kind of photovoltaic panel method for detecting cleaning degree for a kind of method abstract of automatic detection photovoltaic panel cleannes of denomination of invention.This method principle is, in certain illumination range, intensity of illumination and photovoltaic panel output terminal open-circuit voltage are proportional, i.e., it is bigger to receive the stronger photovoltaic panel output terminal open-circuit voltage of intensity of illumination for photovoltaic panel, and photovoltaic panel receives intensity of illumination with its surface cleanness inversely；So, photovoltaic panel output terminal open-circuit voltage is smaller represents its surface to fall grey degree more serious.The present invention photovoltaic panel output end voltage different by comparing two pieces of cleannes, to determine whether photovoltaic panel needs to clean.Compared with prior art, the present invention can monitor the cleannes of photovoltaic panel in real time, and fall ash in photovoltaic panel cleans in time to a certain extent, excludes the interference of human factor, ensure that generating efficiency.
Description
Technical field
The present invention relates to solar energy generation technology, specially a kind of method of automatic detection photovoltaic panel cleannes.
Background technology
With the development in an all-round way of global industry, demand of the every country industry-by-industry to energy requirements drastically expands, energy
The number of source demand has become the standard of a country or regional economic development situation.Regenerative resource mainly have water energy,
The Energy situations such as solar energy, wind energy, geothermal energy, biomass energy, main advantage are with self-recovery ability.Make full use of this
A little regenerative resources are to solve current energy crisis and most effective, the feasible approach of environmental pollution, and especially solar energy is with it
The advantages of unique, has been to be concerned by more and more people, because solar energy has natural advantage, application of solar energy region is extensive；Too
Positive energy cleanliness without any pollution；Solar energy generating efficiency is high；Solar generation component does not have moving component, is hardly damaged and is easy to tie up
Shield.
Various countries start to put into substantial contribution construction solar photo-voltaic power generation station, and solar energy photovoltaic panel is photo-voltaic power generation station electric energy
What is generated is basic, and the generating efficiency of photovoltaic panel directly determines the generated energy of a solar power plant.It is found according to practical experience
Photovoltaic panel surface cleanness degree is directly proportional to generating efficiency, to improve generating efficiency and ensure that photovoltaic panel cleaning is a kind of effective way
Diameter.As solar power plant the more is built the more more, the photovoltaic panel cleaned is needed also to increase severely therewith, how photovoltaic panel is carried out fast
The effective and intelligent cleaning of speed has become each photovoltaic generation enterprise urgent need to solve the problem.
Existing photovoltaic panel cleaning equipment is largely cleaned for timing or manual control, it is impossible to clean dust accumulation in photovoltaic panel in time
Influence generating efficiency, and it is inconvenient, cost of labor is higher.
Invention content
In order to solve above-mentioned technological deficiency, the present invention provides a kind of method of automatic detection photovoltaic panel cleannes.
The technical solution adopted by the present invention is, sets reference group and two groups of photovoltaic battery panels of contrast groups, and in guarantee
It states two groups of photovoltaic battery panels and receives the primary condition such as illumination condition, setting angle and the complete phase of photovoltaic panel submatrix for needing to clean
Together；Wherein, the photovoltaic panel timing in reference group cleans, and ensures free from dust in its photovoltaic panel, and the photovoltaic battery panel in contrast groups
Ensure its to be allowed freely to fall ash in the case that its primary condition is identical with photovoltaic panel submatrix；It is found through experiments that, it is strong in certain illumination
Interior photovoltaic panel open-circuit voltage and the intensity of illumination for injecting photovoltaic panel are proportional in the range of degree, that is to say, that in certain illumination
The output end voltage of the grey photovoltaic panel in intensity whereabouts is less than the output end voltage of no dust photovoltaic panel；Again at the beginning of contrast groups photovoltaic panel
Beginning condition is identical with photovoltaic panel submatrix, then fall the grey time it is identical in the case of, two groups of photovoltaic panels fall grey degree be it is identical,
I.e. its generating efficiency is also identical；At this time only it is to be understood that photovoltaic panel falls grey degree and can represent photovoltaic plank in contrast groups
Battle array falls grey situation.
Photovoltaic panel does not have dust in standard group again, at this time as long as contrast standard group and contrast groups photovoltaic panel output end voltage
It is known that photovoltaic panel falls grey degree in contrast groups, if two groups of photovoltaic panel output end voltage differences reach a certain calibration value, then
Mean that photovoltaic panel falls ash and seriously needs to clean.
Description of the drawings
Fig. 1 is a kind of photovoltaic panel scheme of installation in the present invention.
Fig. 2 is schematic diagram of logic principle.
Fig. 3 is hardware architecture diagram.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment rather than whole embodiments of the present invention.Based on this
Embodiment in invention, the every other implementation that those skilled in the art are obtained without making creative work
Example, should all be considered as protection scope of the present invention.
It is as shown in Figure 1 two groups of photovoltaic panel scheme of installation of the present embodiment, two pieces is installed by photovoltaic plate array in power generation
Photovoltaic panel, respectively reference group（2）, contrast groups（1）, and above-mentioned two groups of photovoltaic panel setting angles and photovoltaic panel in photovoltaic plate array
Setting angle is identical；Cleaning agency is installed in above-mentioned two groups of photovoltaic panels（ 3）, which can complete pair
The cleaning of above-mentioned two groups of photovoltaic panels.In addition, above-mentioned cleaning agency（3）Timing cleans reference group（2）Photovoltaic panel ensures that its surface is clear
Clean free from dust；Above-mentioned contrast groups（1）It is identical with photovoltaic panel cleaning frequency in photovoltaic panel submatrix that photovoltaic panel cleans frequency.So, by
In contrast groups（1）Photovoltaic panel cleans frequency with photovoltaic panel in photovoltaic panel submatrix, receives illumination condition, falls the conditions all same such as ash,
So contrast groups（1）Middle photovoltaic panel cleannes can represent photovoltaic panel cleannes in photovoltaic panel submatrix；Referring again to group（2）Photovoltaic panel
Timing cleans free from dust, which can be used as reference and above-mentioned contrast groups（2）Photovoltaic panel generating efficiency carries out pair
Than.
As shown in Figure 2 and Figure 3, the method for a kind of automatic detection photovoltaic panel cleannes of the invention, includes the following steps：
Sample respectively the output voltage U1, U2, voltage U1, U2 of reference group and contrast groups through electric resistance partial pressure, operational amplifier isolation,
It is converted analog signals into after digital signal by processor multilevel iudge by the A/D ports of microcontroller.To ensure sampling precision,
Its average value is taken after need to carrying out multi collect.Executing agency can pass through light-coupled isolation rear-guard by the general delivery outlet of microcontroller
Dynamic motor, starts cleaning equipment, completes the cleaning to photovoltaic panel.Above-mentioned microcontroller can be that the LPC1768 of NXP companies is based on
The microcontroller of ARM Cortex-M3 kernels, the operating frequency of LPC1768 microcontrollers is up to 100MHz.ARM Cortex-
M3 CPU have 3 level production lines and Harvard structure.The peripheral component of LPC1768 microcontrollers includes up to 512KB's
Flash memories, the data storage of 64KB, 12 ADC of 8 channels, motor control PWM, 4 general purpose timers, 6
Output general PWM, with the battery-powered super low-power consumption RTC of independent electrical and the up to general I/O pin of 70.With
LPC1768 takes building data acquisition, it is not necessary to which external ADC avoids complicated hardware circuit design.
Rule of judgment is periodically to clean reference group, if reference group output terminal open-circuit voltage U1 and contrast groups output terminal open circuit
The difference of voltage U2 and the ratio diff_U12 of U1 are more than threshold value, and it is serious to represent that photovoltaic panel falls grey degree, needs to clean in time simultaneously
Alarm is provided, carries out cycle criterion next time again later；If diff_U12 is less than threshold value, represent that photovoltaic panel falls ash and is also not up to
Cleaning degree is needed, need to again be judged after certain time-delay;In addition above-mentioned threshold value can be with sets itself.
By above-mentioned specific embodiment, the technical field technical staff can readily realize the present invention.It requires emphasis
, the scope of the present invention is not restricted to the described embodiments.It is any in the present invention in addition to the technical characteristic described in specification
Any deduction done on the basis of claimed technical solution should all be considered as and all belong to the scope of protection of the present invention.
Claims (6)
- A kind of 1. method of automatic detection photovoltaic panel cleannes, which is characterized in that its principle is the photovoltaic in certain range of light intensity Plate open-circuit voltage and intensity of illumination are proportional, and photovoltaic panel, which falls ash, can reduce practical illumination injection intensity, then its electricity of opening a way Pressure also reduces therewith；Two groups of photovoltaic panel models are set, and photovoltaic panel timing, which cleans, in reference group ensures its surface cleaning free from dust, right Its is allowed freely to fall ash than photovoltaic panel in group；Photovoltaic panel is determined by comparing two groups of photovoltaic panel model output terminal open-circuit voltage sizes Clean-up performance.
- 2. the method for the detection photovoltaic panel cleannes according to claims 1, which is characterized in that the reference group, comparison Photovoltaic panel setting angle in group, to receive illumination condition identical.
- 3. the method for detection photovoltaic panel cleannes according to claim 1, which is characterized in that export the reference group Terminal voltage is compared as nominal voltage U1 and light contrast groups output terminal open-circuit voltage U2.
- 4. it is according to claim 1 detection photovoltaic panel cleannes method, which is characterized in that in system set voltage difference with Reference group voltage is than number calibration value X, as threshold value, if the two models output end voltage difference is less than institute with reference group voltage than number Threshold X is stated, represents that photovoltaic panel does not need to be cleared up；If two model output end voltage differences are more than threshold X, table with reference group than number Show that photovoltaic panel falls ash and seriously needs to clean, system, which gives a warning and starts cleaning equipment, cleans contrast groups photovoltaic panel.
- 5. the method for detection photovoltaic panel cleannes according to claim 1, which is characterized in that above-mentioned reference group, contrast groups Photovoltaic panel setting angle receives illumination condition, place environment all same；Wherein reference group photovoltaic panel is cleaned by cleaning agency timing Ensure its surface cleaning free from dust, it is identical with photovoltaic panel cleaning frequency in photovoltaic panel submatrix that contrast groups photovoltaic panel cleans frequency.
- 6. the method for detection photovoltaic panel cleannes according to claim 1, which is characterized in that the threshold X can be by outside Its size is changed in input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810238581.0A CN108173519A (en) | 2018-03-22 | 2018-03-22 | A kind of method of automatic detection photovoltaic panel cleannes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810238581.0A CN108173519A (en) | 2018-03-22 | 2018-03-22 | A kind of method of automatic detection photovoltaic panel cleannes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108173519A true CN108173519A (en) | 2018-06-15 |
Family
ID=62511206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810238581.0A Pending CN108173519A (en) | 2018-03-22 | 2018-03-22 | A kind of method of automatic detection photovoltaic panel cleannes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108173519A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109261609A (en) * | 2018-11-28 | 2019-01-25 | 徐州亿通光电有限公司 | A kind of solar panel automatic flushing device |
| CN112422081A (en) * | 2020-09-17 | 2021-02-26 | 东北电力大学 | Method for monitoring influence of accumulated dust on surface of solar photovoltaic panel on line |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202275150U (en) * | 2011-09-16 | 2012-06-13 | 苏州大学 | Solar battery dust monitor device |
| CN205725624U (en) * | 2016-05-26 | 2016-11-23 | 衢州职业技术学院 | Photovoltaic module cleannes sensor |
| CN106487330A (en) * | 2016-09-21 | 2017-03-08 | 东北电力大学 | A kind of solar energy photovoltaic panel superficial dust efficiency affects on-Line Monitor Device |
-
2018
- 2018-03-22 CN CN201810238581.0A patent/CN108173519A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202275150U (en) * | 2011-09-16 | 2012-06-13 | 苏州大学 | Solar battery dust monitor device |
| CN205725624U (en) * | 2016-05-26 | 2016-11-23 | 衢州职业技术学院 | Photovoltaic module cleannes sensor |
| CN106487330A (en) * | 2016-09-21 | 2017-03-08 | 东北电力大学 | A kind of solar energy photovoltaic panel superficial dust efficiency affects on-Line Monitor Device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109261609A (en) * | 2018-11-28 | 2019-01-25 | 徐州亿通光电有限公司 | A kind of solar panel automatic flushing device |
| CN112422081A (en) * | 2020-09-17 | 2021-02-26 | 东北电力大学 | Method for monitoring influence of accumulated dust on surface of solar photovoltaic panel on line |
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Application publication date: 20180615 |