CN107294495A - It is a kind of to be used to study experimental provision and system of the laying dust to photovoltaic module performance impact - Google Patents
It is a kind of to be used to study experimental provision and system of the laying dust to photovoltaic module performance impact Download PDFInfo
- Publication number
- CN107294495A CN107294495A CN201710407509.1A CN201710407509A CN107294495A CN 107294495 A CN107294495 A CN 107294495A CN 201710407509 A CN201710407509 A CN 201710407509A CN 107294495 A CN107294495 A CN 107294495A
- Authority
- CN
- China
- Prior art keywords
- dust
- photovoltaic module
- scatters
- performance impact
- experimental provision
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000428 dust Substances 0.000 title claims abstract description 160
- 238000001514 detection method Methods 0.000 claims abstract description 41
- 230000007613 environmental effect Effects 0.000 claims abstract description 38
- 238000002474 experimental method Methods 0.000 claims abstract description 23
- 238000012544 monitoring process Methods 0.000 claims abstract description 3
- 238000003860 storage Methods 0.000 claims description 31
- 238000005259 measurement Methods 0.000 claims description 11
- 238000004088 simulation Methods 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000005286 illumination Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000005057 refrigeration Methods 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000007791 dehumidification Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 239000000039 congener Substances 0.000 claims 1
- 230000014759 maintenance of location Effects 0.000 claims 1
- 238000011160 research Methods 0.000 description 19
- 238000013517 stratification Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000001028 reflection method Methods 0.000 description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002405 diagnostic procedure Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003331 infrared imaging Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000012795 verification Methods 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
-
- 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 present invention relates to the technical field of experimental provision, disclose a kind of for studying experimental provision of the laying dust to photovoltaic module performance impact, casing including closing, is arranged on the environment simulator of the box house, dust and scatters device, angle control device, power output detection means, camera and photovoltaic module；The environment simulator is used to simulate the environmental aspect residing for photovoltaic module；The dust scatters device for simulating the dust situation suffered by photovoltaic module；The camera is used for the working condition for monitoring all parts of box house；The power output detection means is used for the power output for detecting photovoltaic module；The angle control device is used for the angle of inclination for adjusting the base plane of photovoltaic module and casing.Also disclose a kind of for studying control system and experimental method of the laying dust to the experimental provision of photovoltaic module performance impact.The present invention can be tested in any occasion, free from the influence of the external environment, have the advantages that versatility, comparativity.
Description
Technical field
The invention belongs to the technical field of experimental provision, and in particular to one kind is used to study laying dust to photovoltaic module performance shadow
Loud experimental provision and system.
Background technology
The energy and environmental problem have become one of Present Global focus of attention.Compared with traditional fossil energy, the sun
There can be inexhaustible, nexhaustible, cleanliness without any pollution, have become one of principal mode of new energy.In photovoltaic
In electricity generation system research, except assembly material and conversion efficiency, power prediction, inversion efficiency, MPPT maximum power point tracking MPPT, from simultaneously
Outside the key technologies such as network control system, isolated island protection, Power quality management, for the photovoltaic system of longtime running, component product
Ash and its influence are also one the problem of can not be ignored.
Deposition of the atmospheric dust on photovoltaic module, adhere to and consolidate affected by various factors, such as component inclination angle, wind
Fast wind direction, dust property, ambient humidity etc..
Document《The research that dust stratification influences on photovoltaic module power generation performance》In test for Hebei Province photovoltaic plant
Influence of the dust storm to system output power, the situation of change of photovoltaic arrays surface area ash quantity using dust density quantitative assessment,
So as to reflect that power output is reduced caused by photovoltaic surface dust stratification；Document《Dust covers the original to photovoltaic module performance impact
Position experimental study》Photovoltaic array experiment porch is built in Xi'an somewhere, to the temperature of photovoltaic module, generated output, solar radiation
Intensity and ambient parameter are detected in real time, design the different dust stratification density operating mode in photovoltaic module surface, to loading condition similarly hereinafter
The data of detection are analyzed in one period, obtain dust stratification density and photovoltaic module upper strata glass relative light transmission, light
Lie prostrate the coupled relation of module operating temperature and generated output；Document《The experiment that dust stratification influences on polysilicon photovoltaic module efficiency
Research》Carry out the experiment of 863 projects in Hami Prefecture, test dust stratification density and amorphous silicon module upper cover plate light transmittance and component are most
High-power power relation；Document《Photovoltaic system is influenceed efficiently to utilize the factor Experimental Study of solar energy》In Hohhot district
Research of the different installation to photovoltaic system performance impact is carried out, photovoltaic module fixed angle has been installed, double-axis tracking, hung down
D-axis is tracked, and the solar radiation quantity obtained under the mounting means such as north and south axle tracking is simulated calculating and experimental study；Text
Offer《Photovoltaic module laying dust characteristic and High-efficiency dust removal method research》Using city of Hangzhou distributed photovoltaic system as research object, experiment
Test the output power of photovoltaic module attenuation law in the case of laying dust, it was demonstrated that the necessity of the regular dedusting of photovoltaic module, point
Analyse dust removal mechanism, devised dust-cleaning principle mechanism, and carry out simulation analysis and experimental verification.Experiment number in document above
Carried out according under external environment, ambient parameter is detectable but uncontrollable.
Patent of invention《Photovoltaic panel dust detection》、《The cleannes diagnostic method and device of photovoltaic battery panel》、《It is a kind of
The method and detector of reflection method detection photovoltaic panel cleannes》、《A kind of photovoltaic array Autonomous test cleaning device》Propose respectively
The different laying dust or clean condition detection method applied to actual photovoltaic generating system, is related to backboard temperature detection, light
According to method and technologies such as intensity detection, generated energy detection, reflection method, thermal infrared imagings, but do not refer on carrying out systematicness
The method of contrast experiment.
To sum up, the defect that presently, there are is：
1. although different researchers are to the dust stratification problem of photovoltaic module, especially dust stratification influence factor, dust stratification are to component
Reduction of exerting oneself effect etc. has carried out substantial amounts of experimental study and analysis, but most experiments process is in same area or outdoor
Carry out, lack to experimentation all affecting parameters (component parameter, sleet, frost and dew, temperature, humidity, illumination, wind direction and wind velocity, ash
Dirt composition and composition, support angle etc.) record or comprehensive analysis, therefore experimentation without repeatability, it is impossible to apply
In other photovoltaic systems；
2. the environment and experimental system parameter differences residing for different experiments are larger, experimental data and knot that document is recorded are caused
Fruit differs larger, and comparativity is lacked each other, it is also difficult to evaluate it good and bad；
Therefore, it is badly in need of a kind of experimental provision more integrated to grind photovoltaic module performance impact problem for carrying out laying dust
Study carefully.
The content of the invention
The present invention provides a kind of for studying experimental provision of the laying dust to photovoltaic module performance impact, solves existing apparatus
Experimentation repeatability it is poor, each other lack comparativity, also be difficult to evaluation its it is good and bad the problems such as.
The present invention can be achieved through the following technical solutions：
It is a kind of to be used to study experimental provision of the laying dust to photovoltaic module performance impact, include the casing of closing, be arranged on institute
State the environment simulator of box house, dust scatter device, angle control device, power output detection means, camera and
Photovoltaic module；
The environment simulator is used to simulate the environmental aspect residing for photovoltaic module；The dust scatters device for mould
Intend the dust situation suffered by photovoltaic module；The camera is used for the working condition for monitoring all parts of box house；Institute
State the power output that power output detection means is used to detect photovoltaic module；The angle control device is used to adjust photovoltaic module
With the angle of inclination of the base plane of casing.
Further, the dust scatters device including being in be set on the coniform device that scatters, the dome face of the device that scatters
There are multiple dust storage tanks, cone bottom is provided with magnetic valve, each dust storage tank is overall cylindrical, and dome face is adopted
With door, for pouring into for dust, the tapered shape in bottom, the cone-shaped passes through the dome face for the device that scatters to be arranged on the device that scatters
Inside, the bottom of the cone-shaped, which is set, also magnetic valve, and the inner tip of each dust storage tank is provided with infrared
Distance measuring sensor, for measuring dust top surface and the distance at the top of dust storage tank.
Further, the environment simulator includes actuator, light source and blower fan, and the actuator is used for box house
Apply refrigeration, heating, humidification and dehumidification operation, the light source is arranged on casing top, and the illumination for adjusting box house is strong
Degree, the blower fan is provided with multiple, wind direction and wind speed for adjusting box house；
Also include the Temperature Humidity Sensor, irradiance sensor, wind speed and direction sensor for being arranged on box house, respectively
For measuring the humiture of box house, irradiation level, wind speed and direction.
Further, the blower fan is provided with four, and the plane and the cone bottom for the device that scatters residing for four blower fans are in
Same plane, the wind speed and direction sensor is arranged on blower fan lower central and close to the position of photovoltaic module.
Further, the angle control device includes the support that can rotate, the rotary shaft of the support and motor it is defeated
Shaft is connected, and photovoltaic module is provided with the support.
It is a kind of based on described above for research laying dust to the control system of the experimental provision of photovoltaic module performance impact,
Including host computer, the host computer and scatter controller, pitch angle control device, environmental control, power detection controller, adjustable electric
Son load and camera are connected；
The controller that scatters is connected with multiple infrared distance sensors with multiple magnetic valves, and the controller that scatters passes through
Internal timer measures the Lifetime of each magnetic valve；
The pitch angle control device is connected with pwm signal driver, encoder, the pwm signal driver and encoder and
Motor is connected, and the encoder is used for the rotational displacement for detecting motor；
The environmental control and actuator, light source, multiple blower fans, Temperature Humidity Sensor, irradiance sensor, wind speed and
Wind transducer is connected；
The power detection controller is connected with current regulating circuit, voltage modulate circuit and adjustable electronic load, described
Current regulating circuit is connected with current Hall element, and the voltage modulate circuit is connected with voltage Hall element, and the electric current is suddenly
That element and voltage Hall element are connected with photovoltaic module, and the photovoltaic module is connected with adjustable electronic load.
Further, including the environmental aspect for different time sections and dust situation, measure to same tested photovoltaic module
Performance impact the step of and for different dust situation and identical environmental aspect, measure to same tested photovoltaic module
The step of performance impact.
Further, for different time sections environmental aspect and the experimental method of dust situation includes：
Step 1: tested photovoltaic module is arranged on support；
Step 2: set on host computer the certain time period of the tested photovoltaic module their location ambient parameter and
The dip angle parameter of photovoltaic module, the environmental simulation for completing to set using PC control environmental control controls pitch angle control device
Photovoltaic module is set to be placed in the incident angle of setting；
Step 3: the dust of species needed for being respectively charged into each dust storage tank, scattered control by PC control
Device opens the corresponding magnetic valve of each dust storage tank and carries out dust collection, after collection is finished, and the magnetic valve for opening the device that scatters enters
The capable operation that scatters；
Step 4: setting the different load values of photovoltaic module by host computer, control adjustable electronic load is to photovoltaic group
Part applies corresponding load, measures corresponding magnitude of voltage and current value by power output detection means, is uploaded to host computer, enters
Row is drawn and shows corresponding power curve；
Step 5: repeat step two to four, the power curve of measurement correspondence other times section.
Further, the experimental method for different dust situation and identical environmental aspect includes：
Step 1: tested photovoltaic module is arranged on support；
Step 2: setting the dip angle parameter of fixed ambient parameter and photovoltaic module on host computer, host computer control is utilized
Environmental control processed completes the environmental simulation set, the incident angle for controlling pitch angle control device to make photovoltaic module be placed in setting；
Step 3: the dust of species needed for being respectively charged into each dust storage tank, scattered principle according to a certain dust,
Opened the corresponding magnetic valve of each dust storage tank by the PC control controller that scatters and carried out dust collection, after collection is finished,
The magnetic valve for opening the device that scatters carries out the operation that scatters；
Step 4: setting the different load values of photovoltaic module by host computer, control adjustable electronic load is to photovoltaic group
Part applies corresponding load, measures corresponding magnitude of voltage and current value by power output detection means, is uploaded to host computer, enters
Row is drawn and shows corresponding power curve；
Step 5: cleaning photovoltaic module, repeat step two to four, other dusts of measurement correspondence scatter principle power it is bent
Line.
Further, the dust principle that scatters includes the dust of single kind, and identical amount is scattered, with same ratio
Scattered and scattered after different types of dust is mixed in varing proportions after different types of dust is mixed.
The present invention is beneficial to be had technical effect that：
1st, temperature, humidity, illumination, wind direction, wind speed, dust constituent and composition, support angle, photovoltaic group can be manually set
The parameters such as the load of part so that research of the laying dust to photovoltaic module performance impact is no longer limited by given area, specific environment,
It can be carried out in any occasion, it is free from the influence of the external environment；
2nd, experimentation has repeatability, while experimental data can be applied to the research of other photovoltaic systems, with logical
With property, comparativity, accuracy of detection height, high reliability.
Brief description of the drawings
Fig. 1 is general structure schematic diagram of the invention；
Fig. 2 scatters the structural representation of device for the dust of the present invention；
Fig. 3 connects block diagram for the overall control of the present invention；
Fig. 4 connects block diagram for the circuit of the power output detection means of the present invention；
Fig. 5 for the present invention dust scatter device circuit connection block diagram；
Fig. 6 connects block diagram for the circuit of the angle control device of the present invention；
Fig. 7 connects block diagram for the circuit of the environment simulator of the present invention；
Wherein, 1- casings, 2- cameras, 3- photovoltaic modulies, 4- scatters device, and 5- dust storage tanks, 6- magnetic valves, 7- is infrared
Distance measuring sensor, 8- light sources, 9- blower fans, 10- Temperature Humidity Sensors, 11- irradiance sensors 11,12- wind speed and directions sensing
Device, 13- supports.
Embodiment
Below in conjunction with the accompanying drawings and preferred embodiment describe in detail the present invention embodiment.
As shown in figure 1, the general structure schematic diagram of the present invention.It is used to study laying dust to photovoltaic group the invention provides one kind
The experimental provision of part performance impact, includes the casing 1 of closing, is arranged on the environment simulator inside casing 1, dust and scatters dress
Put, angle control device, power output detection means, camera 2 and photovoltaic module 3；Environment simulator is used to simulate photovoltaic
Environmental aspect residing for component 3；Dust scatters device for simulating the dust situation suffered by photovoltaic module 3；Camera is used for
The working condition of all parts inside casing 1 is monitored, angle control device is used for the bottom for adjusting photovoltaic module 3 and casing 1
The angle of inclination of plane；Power output detection means is used to apply photovoltaic module 3 output work for loading and detecting photovoltaic module 3
Rate.
As shown in Fig. 2 the dust scatters, device includes being in the coniform device 4 that scatters, and is set on the dome face for the device 4 that scatters
There are multiple dust storage tanks 5, cone bottom is provided with magnetic valve 6, and each dust storage tank 5 is overall cylindrical, and dome face is adopted
With door, facilitate dust pour into and tank body sealing, the tapered shape in bottom, the cone-shaped position passes through the circle for the device 4 that scatters
Top surface is arranged on the inside for the device 4 that scatters, and being set in the bottom at cone-shaped position also has a magnetic valve 6, each dust storage tank 5 it is interior
Portion top is additionally provided with infrared distance sensor 7, for measuring dust top surface and the distance at the top of dust storage tank 5, so may be used
To feed back the memory state of dust in tank in time, once less than setting value, the dome face at the top of tank body can be opened and supplemented, lead to
Scatter device 4 and the dust storage tank 5 of cone structure are crossed, the dust stream in dust storage tank 5 can be conveniently controlled using magnetic valve 6
Enter to scatter in device 4 and scattered in the device 4 that scatters.
The environment simulator includes actuator, light source 8 and blower fan 9, and actuator is used to apply refrigeration to box house, added
Heat, humidification and dehumidification operation, light source 8 are arranged on the top of casing 1, and for adjusting the intensity of illumination inside casing 1, blower fan 9 is set
The cone bottom for being equipped with four and the plane residing for it and the device 4 that scatters is in same plane, for the wind direction inside the body of regulating box 1 and
Wind speed, make from dust scatter device outflow dust be preferably applied on photovoltaic module 3, the effect for the dust that scatters is more true to nature；
Also include being arranged on Temperature Humidity Sensor 10, irradiance sensor 11, the wind speed and direction sensor 12 inside casing 1, respectively
For measuring humiture inside casing 1, irradiation level, wind speed and direction, wind speed and direction sensor 12 is arranged on the lower section of blower fan 9
Center and the position of close photovoltaic group 3, so can more accurately detect the wind speed and direction that photovoltaic module 3 is subject to, mould
Intend effect more vivid.
The angle control device includes the support 13 that can be rotated, and photovoltaic module 3 is provided with support 13, the support 13
Rotary shaft be connected with the output shaft of motor, desired position is arranged on so as to photovoltaic module 3 by motor driven support rotation.
Present invention also offers a kind of experiment based on described above for research laying dust to photovoltaic module performance impact
The control system of device, as shown in figure 3, including host computer, the host computer and scatter controller, pitch angle control device, environmental Kuznets Curves
Device, power detection controller, adjustable electronic load and camera 2 are connected.
As shown in figure 4, the power detection controller is connected with current regulating circuit and voltage modulate circuit, current regulating electricity
Road is connected with current Hall element, and voltage modulate circuit is connected with voltage Hall element, current Hall element and voltage Hall member
Part is connected with photovoltaic module 3, and photovoltaic module 3 is connected with adjustable electronic load, for detecting that photovoltaic module 3 is joined in varying environment
Power output under number, angle of inclination, dust stratification situation and load state.Photovoltaic module 3 is applied not by adjustable electronic load
Same load, the current value of output passes through current Hall element and current regulating circuit, sends into power detection controller；Output
Voltage is also fed into power detection controller by voltage Hall element and voltage modulate circuit；By power detection controller by phase
The test value answered is uploaded to host computer, is drawn and shows corresponding power curve.
As shown in figure 5, the controller that scatters is connected with multiple infrared distance sensors 7, multiple magnetic valves 6, the control that scatters
Device measures the Lifetime of each corresponding magnetic valve 6 by internal timer；Needed for the memory storage research of dust storage tank 5
Dust, the device 4 that scatters is used for the dust that is collected into of scattering, and controls the magnetic valve 6 of each dust storage tank to open by the controller 4 that scatters
The conjunction time, and then the scatter type and ratio of dust are controlled, required dust is discharged into and scattered in device, and is scattered by control
The magnetic valve 6 of device 4 carries out dust and scattered, while detecting whether dust is sufficient in tank.
As shown in fig. 6, pitch angle control device is connected with pwm signal driver, encoder, pwm signal driver and encoder
It is connected with motor, the encoder is used for the rotational displacement for detecting motor, the use of pitch angle control device can produce the list of pwm signal
Piece machine；The inclination angle of setting is inputted by host computer, pitch angle control device produces pwm signal, and inclination angle is controlled by pwm signal driver
Device processed produces pwm signal and carries out power amplification, and then motor adjustment angle, while encoder detects the rotation of current motor
Angular displacement is back to pitch angle control device and carries out PID control, until inclination angle reaches setting value.
As shown in fig. 7, environmental control and actuator, light source 8, multiple blower fans 9, Temperature Humidity Sensor 10, irradiation level are passed
Sensor 11, wind speed and wind transducer 12 are connected.The warm and humid angle value of setting is inputted by host computer, Temperature Humidity Sensor 10 is detected
The temperature inside the box, humidity are transmitted to environmental control, are contrasted with setting value, and environmental control sends corresponding control command, are opened
Or the refrigeration of actuator, heating, humidification, dehumidifying valve are closed, while the continuous temperature for detecting box house of Temperature Humidity Sensor 10
Humidity, carries out PID control, until the humiture of box house reaches setting value.
The irradiation level of setting is inputted by host computer, the detection internal irradiation degree of casing 1 of irradiance sensor 11 is transmitted to ring
Border controller, is contrasted with setting value, and environmental control sends corresponding control command, the voltage exported by D/A converting circuit
The brightness of value control light source is to setting value.
The wind speed and direction of setting is inputted by host computer, the adjustable blower fan 9 of rotating speed inside casing 1, wind speed and wind is opened
Detect the inside wind speed and direction of casing 1 to sensor 12, it is actual for four Fans 9 blow out wind force vector and size and direction,
Transmit to environmental control, contrasted with setting value, corresponding control command is sent, by the blower fan 9 for adjusting a certain or several
Rotating speed, makes wind speed and direction reach setting value.
Present invention also offers a kind of experiment based on described above for research laying dust to photovoltaic module performance impact
The experimental method of device, including environmental aspect and dust situation for different time sections, are measured to same tested photovoltaic module
Performance impact the step of and for different dust situation and identical environmental aspect, measure to same tested photovoltaic module
The step of performance impact.
The experimental method of environmental aspect and dust situation for different time sections includes：
Step 1: tested photovoltaic module 3 is arranged on support 13；
Step 2: setting the ambient parameter of the certain time period of the their location of tested photovoltaic module 3 on host computer
And the dip angle parameter of photovoltaic module 3, the environmental simulation for completing to set using PC control environmental control, control pitch angle control
Device makes photovoltaic module 3 be placed in the incident angle of setting；
Step 3: the dust of species needed for being respectively charged into each dust storage tank 5, scattered control by PC control
Device opens the corresponding magnetic valve 6 of each dust storage tank 5 and carries out dust collection, after collection is finished, and opens the magnetic valve for the device 4 that scatters
6 carry out the operation that scatters；
Step 4: setting the different load values of photovoltaic module 3 by host computer, control adjustable electronic load is to photovoltaic group
Part 3 applies corresponding load, measures corresponding magnitude of voltage and current value by power output detection means, is uploaded to host computer,
Drawn and show corresponding power curve；
Step 5: repeat step two to four, the power curve of measurement correspondence other times section.
Embodiment 1：
Certain photovoltaic generating system location external environment condition in May is as follows, 35 DEG C of outdoor temperature, humidity 40%RH, per day
Irradiation level 800Wm2, northwester, wind speed 5m/s, main dust source is soil, sand and dust, rock, and mixed proportion is about 1:1:
1；Photovoltaic panel model " 45 ° of black lattice MG-M100 ", panel and ground angle.Using the experimental provision of the present invention, more than simulation
The step of condition carries out output power measurement is as follows：
(1) " black lattice MG-M100 " photovoltaic modulies are on support for installation；
(2) photovoltaic module and ground elevation parameter are inputted by host computer：45 °, pass through angle control device adjustable inclination
To 45 °；
(3) be followed successively by by host computer input temp, humidity, irradiation level, wind direction, wind speed parameter " 35 DEG C, 40%RH,
800W·m2, northwester, 5m/s ", using environment simulator, by the ambient parameter inside the containment housing of the present invention adjust to
Values above；
(4) dust is scattered and is stored in a soil i.e. solenoid valve control, sand respectively in three dust storage tanks in device
Dirt is i.e. No. three solenoid valve controls of No. two solenoid valve controls, rocks, is scattered controller by PC control, and No. one is opened successively
Magnetic valve, No. two magnetic valves, No. three magnetic valves, a length of T when each magnetic valve is opened, when a valve is opened, other two passes
Close, treat that soil, sand and dust, the class dust of rock three are collected and finish, the magnetic valve for opening the device that scatters is scattered；
(5) the different load values of photovoltaic module 3 are set by host computer, and control adjustable electronic load is to photovoltaic module 3
Apply corresponding load, corresponding magnitude of voltage and current value are measured by power output detection means, host computer is uploaded to, carried out
Draw and show corresponding power curve, so as to draw generating efficiency；
(6) after being tested more than completing, if also needing to carry out the generating efficiency measurement in other months, by the number in (3), (4)
According to the data for making corresponding month into, the measurement of (5) is repeated, so that the data of whole year are readily available in the lab, for
Scientific research is used.
Experimental method for different dust situation and identical environmental aspect includes：
Step 1: tested photovoltaic module 3 is arranged on support 13；
Step 2: setting the dip angle parameter of fixed ambient parameter and photovoltaic module 3 on host computer, host computer control is utilized
Environmental control processed completes the environmental simulation set, the incident angle for controlling pitch angle control device to make photovoltaic module 3 be placed in setting；
Step 3: the dust of species needed for being respectively charged into each dust storage tank 5, scattered original according to a certain dust
Then, opened the corresponding magnetic valve 6 of each dust storage tank 5 by the PC control controller that scatters and carried out dust collection, collected
Bi Hou, the magnetic valve 6 for opening the device 4 that scatters carries out the operation that scatters；
Step 4: setting the different load values of photovoltaic module 3 by host computer, control adjustable electronic load is to photovoltaic group
Part 3 applies corresponding load, measures corresponding magnitude of voltage and current value by power output detection means, is uploaded to host computer,
Drawn and show corresponding power curve；
Step 5: cleaning photovoltaic module 3, repeat step two to four, other dusts of measurement correspondence scatter principle power it is bent
Line.
Wherein, the dust principle that scatters includes the dust of single kind, identical amount scattered, with same ratio by difference
Scattered and scattered after different types of dust is mixed in varing proportions after the dust mixing of species.
Embodiment 2：
Influence research for dust property to generating efficiency, the experiment that can be followed the steps below：
1) it is fixed value to set the model of photovoltaic module 3 and mounted angle, at the same the temperature inside containment housing 1 is set, it is wet
Degree, irradiation level, wind direction, wind speed parameter are fixed value；
2) dust is scattered and is stored in a soil i.e. solenoid valve control, sand respectively in three dust storage tanks 5 in device
Dirt is No. two solenoid valve controls, rock and No. three solenoid valve controls；
3) influence of the research equal amount, different types of dust to generating efficiency, is carried out by three below step：
(a) open a magnetic valve and continue after T time, the different load values of photovoltaic module 3 are set by host computer,
Control adjustable electronic load applies corresponding load to photovoltaic module 3, and corresponding voltage is measured by power output detection means
Value and current value, are uploaded to host computer, are drawn and show corresponding U-I characteristics, P-V characteristic curves, study generating efficiency；
(b) photovoltaic panel is cleaned, No. two magnetic valves is opened and continues after T time, photovoltaic module 3 is set by host computer
Different load values, control adjustable electronic load applies corresponding load to photovoltaic module 3, is surveyed by power output detection means
Corresponding magnitude of voltage and current value are measured, host computer is uploaded to, is drawn and shows corresponding U-I characteristics, P-V characteristic curves,
Study generating efficiency；
(c) photovoltaic panel is cleaned, No. three magnetic valves is opened and continues after T time, photovoltaic module 3 is set by host computer
Different load values, control adjustable electronic load applies corresponding load to photovoltaic module 3, is surveyed by power output detection means
Corresponding magnitude of voltage and current value are measured, host computer is uploaded to, is drawn and shows corresponding U-I characteristics, P-V characteristic curves,
Study generating efficiency；
4) influence of the research same ratio, different types of dust to generating efficiency, is carried out by following two steps：
1. photovoltaic panel, is cleaned, magnetic valve, No. two magnetic valves are successively opened, it is T to open duration, by upper
Machine sets the different load values of photovoltaic module 3, and control adjustable electronic load applies corresponding load to photovoltaic module 3, passed through
Power output detection means measures corresponding magnitude of voltage and current value, is uploaded to host computer, is drawn and show corresponding U-I
Characteristic, P-V characteristic curves, study generating efficiency；
2. photovoltaic panel, is cleaned, magnetic valve, No. two magnetic valves, No. three magnetic valves are successively opened, opening duration is
T, the different load values of photovoltaic module 3 are set by host computer, and control adjustable electronic load applies corresponding to photovoltaic module 3
Load, measures corresponding magnitude of voltage and current value by power output detection means, is uploaded to host computer, is drawn and shown
Corresponding U-I characteristics, P-V characteristic curves, study generating efficiency；
5) influence of the research different proportion, different types of dust to generating efficiency：
Photovoltaic panel is cleaned, a magnetic valve is first opened and continues T time, then is opened No. two magnetic valves lasting 2T times, is led to
The different load values that host computer sets photovoltaic module 3 are crossed, control adjustable electronic load applies corresponding negative to photovoltaic module 3
Carry, corresponding magnitude of voltage and current value are measured by power output detection means, host computer is uploaded to, is drawn and show phase
The U-I characteristics answered, P-V characteristic curves, study generating efficiency.
The present invention experimental provision can be manually set temperature, humidity, illumination, wind direction, wind speed, dust constituent and composition,
The parameters such as support angle, the load of photovoltaic module so that laying dust to the research of photovoltaic module performance impact no longer by given area,
The limitation of specific environment, can be carried out in any occasion, free from the influence of the external environment；Meanwhile, experimentation has repeatable
Property, while experimental data can be applied to the research of other photovoltaic systems, with versatility, comparativity, accuracy of detection height, reliability
High the advantages of.
Although the foregoing describing the embodiment of the present invention, it will be appreciated by those of skill in the art that these
It is merely illustrative of, on the premise of the principle and essence without departing substantially from the present invention, a variety of changes can be made to these embodiments
More or modification, therefore, protection scope of the present invention is defined by the appended claims.
Claims (10)
1. a kind of be used to study experimental provision of the laying dust to photovoltaic module performance impact, it is characterised in that：Casing including closing,
Be arranged on the environment simulator of the box house, dust scatter device, angle control device, power output detection means,
Camera and photovoltaic module；
The environment simulator is used to simulate the environmental aspect residing for photovoltaic module；The dust scatters device for simulated light
Lie prostrate the dust situation suffered by component；The camera is used for the working condition for monitoring all parts of box house；It is described defeated
Go out the power output that power detection device is used to detect photovoltaic module；The angle control device is used to adjust photovoltaic module and case
The angle of inclination of the base plane of body.
2. according to claim 1 be used to study experimental provision of the laying dust to photovoltaic module performance impact, it is characterised in that：
The dust scatters device including being in that multiple dusts storages are provided with the coniform device that scatters, the dome face of the device that scatters
Tank, cone bottom is provided with magnetic valve, and each dust storage tank is overall cylindrical, and dome face uses door, is used for
Dust is poured into, bottom tapered shape, and the cone-shaped passes through the dome face for the device that scatters to be arranged on the inside for the device that scatters, the cone
The bottom of shape, which is set, also magnetic valve, and the inner tip of each dust storage tank is provided with infrared distance sensor, uses
In measurement dust top surface and the distance at the top of dust storage tank.
3. according to claim 2 be used to study experimental provision of the laying dust to photovoltaic module performance impact, it is characterised in that：
The environment simulator include actuator, light source and blower fan, the actuator be used for box house apply refrigeration, heating,
Humidification and dehumidification operation, the light source are arranged on casing top, the intensity of illumination for adjusting box house, and the blower fan is set
Have multiple, wind direction and wind speed for adjusting box house；
Also include the Temperature Humidity Sensor, irradiance sensor, wind speed and direction sensor for being arranged on box house, be respectively used to
The humiture of measurement box house, irradiation level, wind speed and direction.
4. according to claim 3 be used to study experimental provision of the laying dust to photovoltaic module performance impact, it is characterised in that：
The blower fan is provided with four, and the cone bottom of the plane residing for four blower fans and the device that scatters is in same plane, the wind
Speed and wind transducer are arranged on blower fan lower central and close to the position of photovoltaic module.
5. according to claim 1 be used to study experimental provision of the laying dust to photovoltaic module performance impact, it is characterised in that：
The angle control device includes the support that can be rotated, and the rotary shaft of the support is connected with the output shaft of motor, the branch
Photovoltaic module is provided with frame.
6. a kind of study laying dust to the experimental provision of photovoltaic module performance impact based on being used for described in one of claim 1-5
Control system, it is characterised in that：Including host computer, the host computer and scatter controller, pitch angle control device, environmental control,
Power detection controller, adjustable electronic load and camera are connected；
The controller that scatters is connected with multiple infrared distance sensors with multiple magnetic valves, and the controller that scatters passes through inside
Timer measures the Lifetime of each magnetic valve；
The pitch angle control device is connected with pwm signal driver, encoder, the pwm signal driver and encoder and motor
It is connected, the encoder is used for the rotational displacement for detecting motor；
The environmental control and actuator, light source, multiple blower fans, Temperature Humidity Sensor, irradiance sensor, wind speed and wind direction
Sensor is connected；
The power detection controller is connected with current regulating circuit, voltage modulate circuit and adjustable electronic load, the electric current
Modulate circuit is connected with current Hall element, and the voltage modulate circuit is connected with voltage Hall element, the current Hall member
Part and voltage Hall element are connected with photovoltaic module, and the photovoltaic module is connected with adjustable electronic load.
7. a kind of study laying dust to the experimental provision of photovoltaic module performance impact based on being used for described in one of claim 1-5
Experimental method, it is characterised in that including the environmental aspect for different time sections and dust situation, is measured to same tested photovoltaic
The step of performance impact of component and for different dust situation and identical environmental aspect, measure to same tested photovoltaic group
The step of performance impact of part.
8. according to claim 7 be used to study experimental method of the laying dust to the experimental provision of photovoltaic module performance impact,
It is characterized in that the experimental method of the environmental aspect and dust situation for different time sections includes：
Step 1: tested photovoltaic module is arranged on support；
Step 2: setting the ambient parameter and photovoltaic of the certain time period of the tested photovoltaic module their location on host computer
The dip angle parameter of component, the environmental simulation for completing to set using PC control environmental control, control pitch angle control device makes light
Volt component is placed in the incident angle of setting；
Step 3: the dust of species needed for being respectively charged into each dust storage tank, beaten by the PC control controller that scatters
Drive the corresponding magnetic valve of each dust storage tank and carry out dust collection, after collection is finished, the magnetic valve for opening the device that scatters is raised
Dissipate operation；
Step 4: setting the different load values of photovoltaic module by host computer, control adjustable electronic load is applied to photovoltaic module
Plus corresponding load, corresponding magnitude of voltage and current value are measured by power output detection means, host computer is uploaded to, is painted
Make and show corresponding power curve；
Step 5: repeat step two to four, the power curve of measurement correspondence other times section.
9. according to claim 7 be used to study experimental method of the laying dust to the experimental provision of photovoltaic module performance impact,
It is characterized in that the experimental method for different dust situation and identical environmental aspect includes：
Step 1: tested photovoltaic module is arranged on support；
Step 2: setting the dip angle parameter of fixed ambient parameter and photovoltaic module on host computer, PC control ring is utilized
Border controller completes the environmental simulation set, the incident angle for controlling pitch angle control device to make photovoltaic module be placed in setting；
Step 3: the dust of species needed for being respectively charged into each dust storage tank, scattered principle according to a certain dust, by upper
The machine control controller that scatters in position opens the corresponding magnetic valve of each dust storage tank and carries out dust collection, after collection is finished, opens
The magnetic valve of device of scattering scatter operation；
Step 4: setting the different load values of photovoltaic module by host computer, control adjustable electronic load is applied to photovoltaic module
Plus corresponding load, corresponding magnitude of voltage and current value are measured by power output detection means, host computer is uploaded to, is painted
Make and show corresponding power curve；
Step 5: cleaning photovoltaic module, repeat step two to four, other dusts of measurement correspondence scatter the power curve of principle.
10. according to claim 9 be used to study experimental method of the laying dust to the experimental provision of photovoltaic module performance impact,
It is characterized in that：The dust principle that scatters includes the dust of single kind, and identical amount scattered, will not with same ratio
Scattered and scattered after different types of dust is mixed in varing proportions after congener dust mixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710407509.1A CN107294495B (en) | 2017-06-02 | 2017-06-02 | A kind of experimental provision that photovoltaic module performance is influenced for studying dust accumulation and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710407509.1A CN107294495B (en) | 2017-06-02 | 2017-06-02 | A kind of experimental provision that photovoltaic module performance is influenced for studying dust accumulation and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107294495A true CN107294495A (en) | 2017-10-24 |
| CN107294495B CN107294495B (en) | 2019-06-25 |
Family
ID=60094800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710407509.1A Active CN107294495B (en) | 2017-06-02 | 2017-06-02 | A kind of experimental provision that photovoltaic module performance is influenced for studying dust accumulation and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107294495B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108540094A (en) * | 2018-05-15 | 2018-09-14 | 李的根 | A kind of solar cell panel assembly tester |
| CN109510593A (en) * | 2018-11-23 | 2019-03-22 | 山东理工昊明新能源有限公司 | The simulated environment test device of new energy solar components |
| CN110346252A (en) * | 2019-07-18 | 2019-10-18 | 华北电力大学（保定） | A kind of visualization solar energy photovoltaic panel dust stratification experimental provision |
| CN110542745A (en) * | 2019-09-03 | 2019-12-06 | 天津工业大学 | Self-assembly ash falling experimental device |
| CN111478664A (en) * | 2020-05-29 | 2020-07-31 | 浙江晶科能源有限公司 | Photovoltaic module test system |
| CN111565025A (en) * | 2020-05-15 | 2020-08-21 | 东北电力大学 | System and method for measuring thickness of accumulated dust of photovoltaic cell panel based on capacitance method |
| CN112769399A (en) * | 2021-02-21 | 2021-05-07 | 司徒玮 | Photovoltaic module electrical property testing arrangement |
| CN113092321A (en) * | 2021-03-31 | 2021-07-09 | 东北电力大学 | Photovoltaic panel dust concentration detection system and method based on power attenuation |
| WO2022077667A1 (en) * | 2020-10-15 | 2022-04-21 | 苏州莱锦机电自动化有限公司 | Electromechanical monitoring device |
| FR3118174A1 (en) * | 2020-12-18 | 2022-06-24 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | DEVICE AND METHOD FOR CHARACTERIZING A SUBSTRATE IN A DIRTY ENVIRONMENT |
| CN114866030A (en) * | 2022-05-16 | 2022-08-05 | 江苏悦阳光伏科技有限公司 | Positive and negative detection device behind manual group frame of photovoltaic module frame |
| CN117639666A (en) * | 2023-12-14 | 2024-03-01 | 苏州潞能能源科技有限公司 | Tester for measuring photoelectric conversion efficiency of photovoltaic module and testing method thereof |
| CN117639666B (en) * | 2023-12-14 | 2024-05-31 | 苏州潞能能源科技有限公司 | Tester and testing method for measuring photoelectric conversion efficiency of photovoltaic module |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203365585U (en) * | 2013-07-23 | 2013-12-25 | 国家电网公司 | Photovoltaic panel dust detector |
| CN105388944A (en) * | 2015-12-03 | 2016-03-09 | 中国华能集团清洁能源技术研究院有限公司 | Photovoltaic detection device and method |
| CN205160429U (en) * | 2015-11-24 | 2016-04-13 | 国家电网公司 | Solar automatic tracking power generation device |
| CN106160662A (en) * | 2016-07-27 | 2016-11-23 | 安徽凯达能源科技有限公司 | The simulated environment test device of new forms of energy solar components |
| CN106487328A (en) * | 2016-11-10 | 2017-03-08 | 上海许继电气有限公司 | Photovoltaic plant laying dust state estimation monitoring system and its method |
-
2017
- 2017-06-02 CN CN201710407509.1A patent/CN107294495B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203365585U (en) * | 2013-07-23 | 2013-12-25 | 国家电网公司 | Photovoltaic panel dust detector |
| CN205160429U (en) * | 2015-11-24 | 2016-04-13 | 国家电网公司 | Solar automatic tracking power generation device |
| CN105388944A (en) * | 2015-12-03 | 2016-03-09 | 中国华能集团清洁能源技术研究院有限公司 | Photovoltaic detection device and method |
| CN106160662A (en) * | 2016-07-27 | 2016-11-23 | 安徽凯达能源科技有限公司 | The simulated environment test device of new forms of energy solar components |
| CN106487328A (en) * | 2016-11-10 | 2017-03-08 | 上海许继电气有限公司 | Photovoltaic plant laying dust state estimation monitoring system and its method |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108540094B (en) * | 2018-05-15 | 2019-11-01 | 江苏悦阳光伏科技有限公司 | A kind of solar cell panel assembly tester |
| CN108540094A (en) * | 2018-05-15 | 2018-09-14 | 李的根 | A kind of solar cell panel assembly tester |
| CN109510593A (en) * | 2018-11-23 | 2019-03-22 | 山东理工昊明新能源有限公司 | The simulated environment test device of new energy solar components |
| CN110346252A (en) * | 2019-07-18 | 2019-10-18 | 华北电力大学（保定） | A kind of visualization solar energy photovoltaic panel dust stratification experimental provision |
| CN110542745A (en) * | 2019-09-03 | 2019-12-06 | 天津工业大学 | Self-assembly ash falling experimental device |
| CN111565025A (en) * | 2020-05-15 | 2020-08-21 | 东北电力大学 | System and method for measuring thickness of accumulated dust of photovoltaic cell panel based on capacitance method |
| CN111478664A (en) * | 2020-05-29 | 2020-07-31 | 浙江晶科能源有限公司 | Photovoltaic module test system |
| WO2022077667A1 (en) * | 2020-10-15 | 2022-04-21 | 苏州莱锦机电自动化有限公司 | Electromechanical monitoring device |
| FR3118174A1 (en) * | 2020-12-18 | 2022-06-24 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | DEVICE AND METHOD FOR CHARACTERIZING A SUBSTRATE IN A DIRTY ENVIRONMENT |
| CN112769399A (en) * | 2021-02-21 | 2021-05-07 | 司徒玮 | Photovoltaic module electrical property testing arrangement |
| CN112769399B (en) * | 2021-02-21 | 2022-04-12 | 江苏汇锦新能源科技有限公司 | Photovoltaic module electrical property testing arrangement |
| CN113092321A (en) * | 2021-03-31 | 2021-07-09 | 东北电力大学 | Photovoltaic panel dust concentration detection system and method based on power attenuation |
| CN114866030A (en) * | 2022-05-16 | 2022-08-05 | 江苏悦阳光伏科技有限公司 | Positive and negative detection device behind manual group frame of photovoltaic module frame |
| CN114866030B (en) * | 2022-05-16 | 2023-11-24 | 江苏悦阳光伏科技有限公司 | Front and back detection device behind manual group frame of photovoltaic module frame |
| CN117639666A (en) * | 2023-12-14 | 2024-03-01 | 苏州潞能能源科技有限公司 | Tester for measuring photoelectric conversion efficiency of photovoltaic module and testing method thereof |
| CN117639666B (en) * | 2023-12-14 | 2024-05-31 | 苏州潞能能源科技有限公司 | Tester and testing method for measuring photoelectric conversion efficiency of photovoltaic module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107294495B (en) | 2019-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107294495B (en) | A kind of experimental provision that photovoltaic module performance is influenced for studying dust accumulation and system | |
| Fan et al. | A novel method for analyzing the effect of dust accumulation on energy efficiency loss in photovoltaic (PV) system | |
| CN100501366C (en) | Apparatus and method for quick measurement of heat performance of solar heat collector | |
| CN1841046A (en) | Specimen heater and control system for accelerated weathering test apparatus | |
| CN100394164C (en) | Dynamic temperature control accelerate slacking test device | |
| CN104180997A (en) | Indoor testing device and method for vehicle heat balance ability | |
| CN108195749A (en) | The dust storm erosion abrasion test device and its test method of Fan blade material | |
| CN207318291U (en) | Airborne dust monitoring and warning system | |
| CN103383306A (en) | Simulation experiment device of wind power generation yaw speed reducer and method thereof | |
| CN107764950A (en) | Industrial park ambient air quality supervisory systems | |
| CN107764951A (en) | Industrial park ambient air quality supervisory systems | |
| CN114329983A (en) | Photovoltaic panel dust deposition cleaning device and method based on discrete element method | |
| TW201413194A (en) | System for monitoring operating angle of solar tracker in real time | |
| CN212275745U (en) | Testing device for indoor simulation of soil evaporation process | |
| CN104579168A (en) | Method for outdoor exposure test of photovoltaic component | |
| CN113092321A (en) | Photovoltaic panel dust concentration detection system and method based on power attenuation | |
| CN115811044A (en) | Photovoltaic power abrupt change prediction method | |
| CN208060462U (en) | Industrial park ambient air quality supervisory systems | |
| CN112764131B (en) | Test method for rainfall calibration | |
| CN103888076A (en) | Apparatus for measuring power characteristic of PV assembly | |
| CN1325901C (en) | Suntracing reflection condensing condensing solarization experimental machine and used solar light tracing method | |
| CN105897162A (en) | Light decay test box used for solar cells | |
| CN2684294Y (en) | Comprehensive dryness simulating and operating equipment | |
| CN110196149A (en) | A kind of test device of fugitive dust concentration and wind speed and angular relationship | |
| CN205566221U (en) | A light decay proof box for solar cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |