CN208224148U - A kind of photovoltaic module dust detection - Google Patents
A kind of photovoltaic module dust detection Download PDFInfo
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- CN208224148U CN208224148U CN201820929331.7U CN201820929331U CN208224148U CN 208224148 U CN208224148 U CN 208224148U CN 201820929331 U CN201820929331 U CN 201820929331U CN 208224148 U CN208224148 U CN 208224148U
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- 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
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Abstract
The utility model provides a kind of photovoltaic module dust detection, provides fixed-illumination at night by fixed light source for photovoltaic module, it is ensured that the consistency of dust stratification degree detecting condition；Then it is detected by output electric current of the current detection means to photovoltaic module, generates and output electric current measure signal is to control unit；The current detection signal is compared by control unit with internal preset cleaning threshold again, when the current detection signal that detection obtains is greater than the cleaning threshold, will be generated by control unit and export clear instruction；And then accurate detection of the completion for dust stratification degree on photovoltaic module, it is ensured that the reasonable cleaning for photovoltaic module.
Description
Technical field
The utility model relates to technical field of photovoltaic power generation, in particular to a kind of photovoltaic module dust detection.
Background technique
Atmospheric dust is to influence one of the key factor of solar energy generating efficiency, and photovoltaic plant can be greatly reduced in dust pollution
Generated energy, estimation is annual at least 5% or more.Therefore, it is necessary to be carried out in time when dust accumulation occurs in photovoltaic module surface
Cleaning.
The detection for component dust is realized generally by artificial micro-judgment in the prior art, is then carried out again clear
It washes；However from the point of view of photovoltaic plant O&M, the cleaning for periodically carrying out photovoltaic module is to improve photovoltaic module power generation
One of most important, most effective means of efficiency.But since the cleaning up cost of photovoltaic module is higher, if cleaning compared with
Cleaning charge is excessively high will frequently to will cause, and cleans the generating efficiency that will affect component not in time；Therefore, a kind of energy is needed
Scheme of enough accurate detection dust stratification degree rationally to be cleaned.
Utility model content
The utility model provides a kind of photovoltaic module dust detection, can accurately detect dust stratification degree to provide one kind
With the scheme rationally cleaned.
To achieve the above object, technical solution provided by the present application is as follows:
A kind of photovoltaic module dust detection, comprising: fixed light source, current detection means and control unit；Wherein:
The fixed light source is provides the light source of fixed-illumination at night for photovoltaic module；
The input terminal of the current detection means is set to the output end of the photovoltaic module；
The output end output electric current measure signal of the current detection means to described control unit input terminal；
The cleaning threshold being compared with the current detection signal, described control unit are preset in described control unit
Output end export clear instruction；The clear instruction be when the current detection signal be greater than the cleaning threshold when, it is described
The instruction that control unit is generated and exported.
Preferably, it is provided with memory module in described control unit, with the current detection signal obtained every time to storage.
Preferably, the cleaning threshold are as follows: the photovoltaic module is completed after cleaning for the first time, by the current detection means
The current detection signal of output.
Preferably, further includes: power supply adaptor；
The input terminal of the power supply adaptor is connected with energy-storage battery, the output end of the power supply adaptor and the fixation
The feeder ear of light source, the current detection means and described control unit is connected；
The energy-storage battery is connected by DC/DC converter with the photovoltaic module.
Preferably, further includes: warning device, the input terminal and the output end phase of described control unit of the warning device
Even, the feeder ear of the warning device is connected with the output end of the power supply adaptor.
Preferably, further includes: communication unit, the input terminal and the output end phase of described control unit of the communication unit
Even, the output end of the communication unit is connected with external main station system, the feeder ear of the communication unit and the power adaptation
The output end of device is connected.
Preferably, further includes: the dust cover being set to above the fixed light source.
Preferably, the fixed light source is halogen lamp.
Preferably, the angle and distance between the fixed light source and the photovoltaic module is adjustable.
Photovoltaic module dust detection provided by the utility model is provided by fixed light source at night for photovoltaic module
Fixed-illumination, it is ensured that the consistency of dust stratification degree detecting condition；Then by current detection means to the output electric current of photovoltaic module
It is detected, generates and output electric current measure signal is to control unit；Again by control unit to the current detection signal and inside
Preset cleaning threshold is compared, will be by control unit when the current detection signal that detection obtains is greater than the cleaning threshold
It generates and exports clear instruction；And then accurate detection of the completion for dust stratification degree on photovoltaic module, it is ensured that for photovoltaic module
Reasonable cleaning.
Detailed description of the invention
It, below will be to embodiment in order to illustrate more clearly of the technical solution in the utility model embodiment or the prior art
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, interior attached drawing is described below only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of photovoltaic module dust detection provided by the embodiment of the utility model.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall in the protection scope of this application.
The utility model provides a kind of photovoltaic module dust detection, can accurately detect dust stratification degree to provide one kind
With the scheme rationally cleaned.
Referring to Fig. 1, which includes: fixed light source 101, current detection means 102 and control
Unit 103；Wherein:
Fixed light source 101 is used to provide fixed-illumination at night for photovoltaic module；Due to the wave of photovoltaic module spectral response
Long range is 320~1100nm, in practical application, as long as the spectral region of the fixed light source is in 320~1100nm；Halogen
The spectral region of plain lamp is in 350nm~450nm, therefore, halogen lamp can be used as the fixed light source 101, the illumination provided
It can be absorbed completely by photovoltaic module.
Also, in order to ensure the illumination that fixed light source 101 provides not will receive dust stratification influence and decay, photovoltaic module ash
Dust detection device further include: be set to the dust cover of 101 top of fixed light source, the influence to avoid dust stratification for illumination amplitude.
The input terminal of current detection means 102 is set to the output end of photovoltaic module, enables the current detection means 102
Enough detections realized for photovoltaic module output electric current；
The output end output electric current measure signal of current detection means 102 to control unit 103 input terminal, it is single for control
Member 103 is compared；
Specifically, the cleaning threshold being compared with current detection signal is preset in the control unit 103, when electric current is examined
When surveying signal greater than cleaning threshold, control unit 103, which generates, simultaneously exports clear instruction.
The clear instruction can be used in being sent to the driving unit of cleaning device to realize automatic cleaning.
Alternatively, the photovoltaic module dust detection further includes warning device 104, as shown in Figure 1, the warning device 104
Input terminal be connected with the output end of control unit 103；At this point, the clear instruction can be used in alarm with prompt operator into
Row cleaning.
Or the photovoltaic module dust detection further includes communication unit 105, as shown in Figure 1, the communication unit
105 input terminal is connected with the output end of control unit 103, and the output end of communication unit 105 is connected with external main station system；This
When, which is passed to external main station system by communication unit 105, which will be used for external main station system to clear
The calculating of the awake strategy of elution.
Effect for the clear instruction, is not specifically limited herein, depending on its application environment, in the guarantor of the application
It protects in range.
Additionally, it is preferred that, the angle and distance between fixed light source 101 and photovoltaic module is adjustable.
In practical application, can by adjust photovoltaic module support device (shown in heavy line as shown in figure 1), realize for
The adjusting of photovoltaic module angle, to meet the detection application in different latitude power station；Meanwhile it should also adjust the height of halogen source lamp
Degree, the height of adjusting and the inclination angle of component are related；It is not specifically limited herein, depending on its application environment, the application's
In protection scope.
Dotted line in Fig. 1 indicates signal transmssion line, photovoltaic module dust detection provided in this embodiment, by upper
The process for stating signal transmission and processing can complete accurate detection for dust stratification degree on photovoltaic module, it is ensured that for photovoltaic group
The reasonable cleaning of part.
It is worth noting that the dust stratification for photovoltaic module detects, there is also a small number of automatic detection sides in the prior art
Case, but it is usually dust detection carried out under the irradiation condition of natural light on daytime, and due to natural light and unstable, usually
It can cause the error of detection, and then since unnecessary cleaning causes the waste in expense, or since cleaning is made not in time
At the reduction of generated energy.
And the photovoltaic module dust detection provided in this embodiment, natural light is replaced with fixed light source 101, at night
Fixed-illumination is provided for photovoltaic module, error caused by nature photo-labile can be masked, maximizes factor pair of reducing the link
The influence of systematic survey, and then ensure the consistency of dust stratification degree detecting condition.
In addition, automatic detection scheme existing in the prior art, the output power of usually relatively more tested photovoltaic module with
Reference power, to realize the detection for dust stratification degree；However, since power is the product of electric current and voltage, wherein voltage by
Ambient temperature effect, electric current is mainly illuminated by the light influence, therefore its testing result will be inevitably affected by temperature.
And the photovoltaic module dust detection provided in this embodiment, in electric current comparison method, generation, are passed through by control unit 103
For above-mentioned power comparison method in the prior art, precision is higher, and testing result is more accurate.
Another embodiment of the utility model additionally provides a kind of specific photovoltaic module dust detection, in above-mentioned implementation
On the basis of example and Fig. 1, it is preferred that be provided with memory module in control unit 103, examined with the electric current obtained every time to storage
Survey signal.
Assuming that the photovoltaic module dust detection is just installed and used after photovoltaic module runs a period of time, that
The cleaning threshold are as follows: after photovoltaic module dust detection investment application, photovoltaic module is completed after cleaning for the first time,
The current detection signal exported by current detection means 102.Subsequent obtained current detection signal by with this cleaning threshold into
Row compares, the judging result for whether being needed to clean；Further, it can be combined with the historical data stored in memory module
To compare judgement；It is not specifically limited herein, depending on its application environment, within the scope of protection of this application.
Assuming that the photovoltaic module dust detection is the installation investment application together with photovoltaic module, then the cleaning threshold
After value may is that photovoltaic module dust detection investment application, the electric current that current detection means 102 exports for the first time is examined
Survey signal.Subsequent step can be identical as above content, no longer repeats one by one herein.
It is worth noting that automatic detection scheme existing in the prior art, the signal that typically will test with
The detection signal of the same race of one photovoltaic module as reference standard is compared, and in order to enable corresponding photovoltaic module conduct
Reference standard does not have dust stratification, keep it dry with regard to also needing to carry out it in advance cleaning, or using other means
It only, will be so that detection process be cumbersome is not easy to realize.And in scheme provided in this embodiment, standard of comparison is to be stored in advance in
Data in control unit 103, and the data are detection data of the same photovoltaic module under clean state, therefore process is simple
It is single, it is easy to accomplish.
Remaining principle is same as the previously described embodiments, no longer repeats one by one herein.
Another embodiment of the utility model additionally provides a kind of specific photovoltaic module dust detection, in above-mentioned implementation
On the basis of example and Fig. 1, it is preferred that further include: power supply adaptor 106；
The input terminal of power supply adaptor 106 is connected with energy-storage battery, the output end and fixed light source of power supply adaptor 106
101, the feeder ear of current detection means 102, control unit 103, warning device 104 and communication unit 105 is connected, such as Fig. 1
In fine line shown in；The output voltage of the power supply adaptor 106 can be 12V, can be used in powering for above-mentioned apparatus,
It is not specifically limited herein, depending on its application environment, within the scope of protection of this application.
Energy-storage battery is connected by DC/DC converter with photovoltaic module.
In specific practical application, the direct current that photovoltaic module generates is stored in storage by the transformation of the DC/DC converter
In energy battery, then passes through 12V power supply adaptor and power to above-mentioned apparatus etc..So that this photovoltaic module dust detection does not need
The additional power supply of external power supply is power itself during realizing dust stratification detection simultaneously, and implementation cost is low.Also, this light
Lying prostrate component dust detection, not only detection accuracy is high, meanwhile, simple structure, application is convenient.
It is worth noting that in practical application for photovoltaic module and DC/DC converter quantity and be correspondingly connected with relationship,
It is not specifically limited herein, depending on its application environment, within the scope of protection of this application.
Remaining principle is same as the previously described embodiments, no longer repeats one by one herein.
Each embodiment is described in a progressive manner in the utility model, the highlights of each of the examples are with its
The difference of his embodiment, the same or similar parts in each embodiment may refer to each other.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation.Although the utility model has been disclosed with preferred embodiment as above, it is not intended to limit the utility model.It is any ripe
Those skilled in the art is known, in the case where not departing from technical solutions of the utility model ambit, all using the side of the disclosure above
Method and technology contents make many possible changes and modifications to technical solutions of the utility model, or be revised as equivalent variations etc.
Imitate embodiment.Therefore, all contents without departing from technical solutions of the utility model, according to the technical essence of the utility model to
Any simple modifications, equivalents, and modifications that upper embodiment is done still fall within the model of technical solutions of the utility model protection
In enclosing.
Claims (9)
1. a kind of photovoltaic module dust detection characterized by comprising fixed light source, current detection means and control are single
Member；Wherein:
The fixed light source is provides the light source of fixed-illumination at night for photovoltaic module；
The input terminal of the current detection means is set to the output end of the photovoltaic module；
The output end output electric current measure signal of the current detection means to described control unit input terminal；
Preset the cleaning threshold being compared with the current detection signal in described control unit, described control unit it is defeated
Outlet exports clear instruction；The clear instruction is the control when the current detection signal is greater than the cleaning threshold
The instruction that unit is generated and exported.
2. photovoltaic module dust detection according to claim 1, which is characterized in that be provided in described control unit
Memory module, with the current detection signal obtained every time to storage.
3. photovoltaic module dust detection according to claim 2, which is characterized in that the cleaning threshold are as follows: described
Photovoltaic module is completed after cleaning for the first time, the current detection signal exported by the current detection means.
4. photovoltaic module dust detection according to claim 1, which is characterized in that further include: power supply adaptor；
The input terminal of the power supply adaptor is connected with energy-storage battery, the output end of the power supply adaptor and the fixed light
The feeder ear in source, the current detection means and described control unit is connected；
The energy-storage battery is connected by DC/DC converter with the photovoltaic module.
5. photovoltaic module dust detection according to claim 4, which is characterized in that further include: warning device, it is described
The input terminal of warning device is connected with the output end of described control unit, the feeder ear of the warning device and the power adaptation
The output end of device is connected.
6. photovoltaic module dust detection according to claim 4, which is characterized in that further include: communication unit, it is described
The input terminal of communication unit is connected with the output end of described control unit, the output end of the communication unit and external main station system
It is connected, the feeder ear of the communication unit is connected with the output end of the power supply adaptor.
7. -6 any photovoltaic module dust detection according to claim 1, which is characterized in that further include: it is set to
Dust cover above the fixed light source.
8. -6 any photovoltaic module dust detection according to claim 1, which is characterized in that the fixed light source is
Halogen lamp.
9. -6 any photovoltaic module dust detection according to claim 1, which is characterized in that the fixed light source with
Angle and distance between the photovoltaic module is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201820929331.7U CN208224148U (en) | 2018-06-14 | 2018-06-14 | A kind of photovoltaic module dust detection |
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| CN201820929331.7U CN208224148U (en) | 2018-06-14 | 2018-06-14 | A kind of photovoltaic module dust detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115764860A (en) * | 2022-10-21 | 2023-03-07 | 国网河北省电力有限公司营销服务中心 | Photovoltaic power generation power prediction analysis device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115764860A (en) * | 2022-10-21 | 2023-03-07 | 国网河北省电力有限公司营销服务中心 | Photovoltaic power generation power prediction analysis device and method |
| CN115764860B (en) * | 2022-10-21 | 2024-04-19 | 国网河北省电力有限公司营销服务中心 | Photovoltaic power generation power prediction analysis device and method |
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| TR01 | Transfer of patent right |
Effective date of registration: 20201210 Address after: 230000 second floor, scientific research building, sunshine power plant, No.2, Tianhu Road, hi tech Zone, Hefei City, Anhui Province Patentee after: HEFEI SUNGROW RENEWABLE ENERGY SCI. & TECH. Co.,Ltd. Address before: 230088 No. 1699 Xiyou Road, Hefei High-tech Zone, Anhui Province Patentee before: SUNGROW POWER SUPPLY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |
Address after: High tech Zone of Hefei city of Anhui Province in 230088 Lake Road No. 2 Patentee after: Sunshine New Energy Development Co.,Ltd. Address before: High tech Zone of Hefei city of Anhui Province in 230088 Lake Road No. 2 Patentee before: Sunshine New Energy Development Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: High tech Zone of Hefei city of Anhui Province in 230088 Lake Road No. 2 Patentee after: Sunshine New Energy Development Co.,Ltd. Address before: 230000 second floor, scientific research building, sunshine power plant, No.2, Tianhu Road, hi tech Zone, Hefei City, Anhui Province Patentee before: HEFEI SUNGROW RENEWABLE ENERGY SCI. & TECH. Co.,Ltd. |