CN107179122B - The measurement method and device of photovoltaic cell surface soil deposition and effective solar radiation - Google Patents
The measurement method and device of photovoltaic cell surface soil deposition and effective solar radiation Download PDFInfo
- Publication number
- CN107179122B CN107179122B CN201710549264.6A CN201710549264A CN107179122B CN 107179122 B CN107179122 B CN 107179122B CN 201710549264 A CN201710549264 A CN 201710549264A CN 107179122 B CN107179122 B CN 107179122B
- Authority
- CN
- China
- Prior art keywords
- photovoltaic cell
- cell surface
- solar radiation
- sand
- intensity
- 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.)
- Active
Links
- 210000004027 cell Anatomy 0.000 title claims abstract description 83
- 230000005855 radiation Effects 0.000 title claims abstract description 49
- 230000008021 deposition Effects 0.000 title claims abstract description 40
- 239000002689 soil Substances 0.000 title claims abstract description 37
- 238000000691 measurement method Methods 0.000 title claims abstract description 14
- 239000000428 dust Substances 0.000 claims description 24
- 239000004576 sand Substances 0.000 claims description 24
- 239000002245 particle Substances 0.000 claims description 20
- 239000003570 air Substances 0.000 claims description 9
- 238000005315 distribution function Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000002310 reflectometry Methods 0.000 claims description 5
- 238000000205 computational method Methods 0.000 claims description 3
- 239000013618 particulate matter Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 8
- 239000000443 aerosol Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 241001124569 Lycaenidae Species 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
-
- 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
Abstract
The measurement method and device of a kind of photovoltaic cell surface soil deposition and effective solar radiation, reflect photovoltaic cell surface soil deposition situation by measuring photovoltaic cell surface sun reflected radiation, and photovoltaic cell surface soil deposition amount is obtained based on this inverting, and then obtain out effective intensity of solar radiation of photovoltaic cell, foundation can be provided for Accurate Prediction photovoltaic cell capable of generating power power.
Description
Technical field
The invention belongs to photovoltaic cell technical field, be related to a kind of measurement method of photovoltaic cell surface soil deposition amount and
Device and a kind of measurement method and device of the effective intensity of solar radiation in photovoltaic cell surface.
Background technology
The Accurate Prediction of photovoltaic cell capable of generating power power is to realize photovoltaic electric station grid connection operation important link.Current photovoltaic hair
The prediction technique of electricity is included mathematical statistics Probabilistic Prediction Model, artificial intelligence prediction technique, is implemented based on weather forecast pattern
Prediction etc. (prediction summary [A] automated manufacturings of the photovoltaic power generation quantities such as jade, 2015,11 (on):27-30).On however,
The method of stating is all made of basic parameter of the practical intensity of solar radiation as prediction, does not account for sand and dust on photovoltaic cell surface etc.
Grain object deposition affects the precision of prediction of photovoltaic cell capable of generating power power to the attenuation of solar radiation.
Invention content
Simple and easy to do, measurement accuracy that it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of measurement process
The measurement method and device of high photovoltaic cell surface soil deposition amount and a kind of effective solar radiation in photovoltaic cell surface are strong
The measurement method and device of degree.
To achieve the above object, present invention employs following technical solutions：
Scheme 1：A kind of measurement method of photovoltaic cell surface soil deposition amount, includes the following steps：
1.1：According to sand and dust particle diameter distribution information in air, sand and dust particle size distribution function f (r) is obtained；
1.2：Obtain intensity of solar radiation I0With photovoltaic cell reflected solar radiation intensity I1, calculate and obtain photovoltaic cell
Surface reflectivity η is
η=I1/I0；
1.3：Calculating the relative dielectric constant ε for obtaining and having sand and dust to cover photovoltaic cell surface dielectric is
Wherein, θ is the incidence angle of sunlight；
1.4：The representative fraction p of sandy environment is in calculating acquisition soil deposition layer
Wherein, εs、ε0The respectively dielectric constant of sandy environment and air；
1.5：Calculating acquisition photovoltaic cell surface soil deposition amount N is
Wherein, A is the area on photovoltaic cell surface.
Scheme 2：A kind of measuring device of photovoltaic cell surface soil deposition amount, including：
First input module, for inputting sand and dust particle diameter distribution information, intensity of solar radiation I0, photovoltaic cell reflect the sun
Radiation intensity I1, angle of incidence of sunlight θ, sandy environment permittivity εs, dielectric constant of air ε0, photovoltaic cell surface area A
Initial value；
First computing module, using following computational methods：
2.1：According to sand and dust particle diameter distribution information in air, sand and dust particle size distribution function f (r) is obtained,
2.2：Calculate the surface reflectivity η=I for obtaining photovoltaic cell1/I0,
2.3：Calculate the relative dielectric constant for obtaining and having sand and dust covering photovoltaic cell surface dielectric
2.4：Calculate the representative fraction for obtaining sandy environment in soil deposition layer
2.5：It calculates and obtains photovoltaic cell surface soil deposition amount
First output module, for exporting photovoltaic battery surface soil deposition amount N.
Scheme 3：A kind of measurement method of the effective intensity of solar radiation in photovoltaic cell surface, includes the following steps：
3.1：Obtain the practical intensity of solar radiation I at photovoltaic cell mounting height0；
3.2：Calculating the acquisition photovoltaic cell effective intensity of solar radiation I in surface is
I=I0T,
Wherein,β is photovoltaic cell surface sandy environment object in formula
Transparency, N are photovoltaic cell surface soil deposition amount, and f (r) is sand and dust particle size distribution function.
Scheme 4：A kind of measuring device of the effective intensity of solar radiation in photovoltaic cell surface, including：
Second input module, for inputting the practical intensity of solar radiation I at photovoltaic cell mounting height0, photovoltaic cell
The transparency β of surface sandy environment object, the initial value and sand and dust particle size distribution function f of photovoltaic cell surface soil deposition amount N
(r)；
Second computing module, it is I=I to obtain the photovoltaic cell effective intensity of solar radiation I in surface with the following method0T,
In,
Second output module, for exporting the effective intensity of solar radiation I of photovoltaic battery surface.
The measurement method and device of a kind of photovoltaic cell surface soil deposition proposed by the present invention and effective solar radiation are led to
Measurement photovoltaic cell surface sun reflected radiation is crossed to reflect photovoltaic cell surface soil deposition situation, and is based on this inverting
It obtains photovoltaic cell surface soil deposition amount, and then obtains out effective intensity of solar radiation of photovoltaic cell, can be accurate pre-
It surveys photovoltaic cell capable of generating power power and foundation is provided.
Description of the drawings
The comparison for the sun light transmission rate result and actual value that present invention measurement obtains when Fig. 1 is different soil deposition amounts；
Fig. 2 is a kind of photovoltaic cell environmental parameter harvester.
Specific implementation mode
With reference to embodiments, a kind of photovoltaic cell surface soil deposition and effective solar radiation are further illustrated the present invention
Measurement method and device specific implementation mode.A kind of photovoltaic cell surface soil deposition proposed by the present invention and effective sun
The measurement method and device of radiation are not limited to the following description.
Embodiment 1：
The present embodiment provides the inversion reckoning process of the used computational methods of the present invention.
By aerosol particle spectrometer, sand and dust particle diameter distribution information in air is acquired, is fitted using normal distribution form,
It is denoted as f (r).
Intensity of solar radiation I is obtained by measuring in real time0With photovoltaic cell reflected solar radiation intensity I1, calculate and obtain light
The surface reflectivity for lying prostrate battery, is denoted as
η=I1/I0。
For specific measurement point, which is given value in the incidence angle θ of different moments sunlight.It is managed according to electromagnetism
By, it is assumed that have sand and dust covering photovoltaic cell surface dielectric relative dielectric constant be ε, then byIt calculates
Obtain have sand and dust covering photovoltaic cell surface dielectric relative dielectric constant ε be
For photovoltaic cell surface deposition medium, the mainly particulate matters such as sand and dust and air, therefore managed according to EFFECTIVE MEDIUM
By the representative fraction p for calculating sandy environment in acquisition soil deposition layer is
Wherein, εs、ε0The respectively dielectric constant of sandy environment and air.
Assuming that the area of photovoltaic cell is A, reTo deposit the average grain diameter of sandy environment, can r be calculated by following formulaeFor
It thereby it is assumed that, photovoltaic cell surface soil deposition amount N is
Assume that sandy environment is monolayer distribution in above-mentioned algorithm, this hypothesis can't cause too big error.Such as Fig. 1 institutes
Show, is the graph of relation of different soil deposition amounts and light transmission rate under two kinds of varying environments.Wherein, rectangular dotted line is first
The soil deposition amount and light transmission rate relation curve that actual tests obtain under kind environment, solid line are the sand and dust that this algorithm model obtains
Deposition and light transmission rate relation curve；Star dotted line is that the soil deposition amount that actual tests obtain under second of environment and light are saturating
Rate relation curve is crossed, dotted line is the soil deposition amount and light transmission rate relation curve that this algorithm model obtains.By this algorithm with
Actual tests are compared, this algorithm can obtain very accurate measurement result.
Further, the practical intensity of solar radiation I at photovoltaic cell mounting height is obtained by radiation intensity sensor0。
In turn, calculating the acquisition photovoltaic cell effective intensity of solar radiation I in surface according to following formula is
I=I0T,
Wherein,β is the transparency of photovoltaic cell surface sandy environment object,
It is related with the ingredient of particulate matter, for giving measurement point, can be obtained by sampled measurements.
Embodiment 2：
The present embodiment provides a kind of harvesters for obtaining photovoltaic cell relevant environmental parameter in embodiment 1.
A kind of photovoltaic cell relevant environmental parameter harvester, as shown in Fig. 2, including being arranged on main support 1, for surveying
It measures the Hygrothermograph 2 of aerial temperature and humidity, the aerosol particle spectrometer 3 for measuring aerosol concentration and its particle diameter distribution information, use
It is used to measure solar radiation and light in the anemobiagraph 4 for measuring wind speed and direction, the photovoltaic cell 5 kept flat, above photovoltaic cell 5
Lie prostrate the radiation intensity sensor 6 of the sun reflected radiation of battery surface；The Hygrothermograph 2, aerosol particle spectrometer 3, wind
4 radiation intensity sensor 6 of fast instrument is electrically connected with digital sampling and processing 7.
The main support 1 is vertical column.The photovoltaic cell 5 and radiation intensity sensor 6 pass through adapter ring 8 respectively
It is fixedly mounted on main support 1.It, can be from the phase of main regulation photovoltaic cell 5 and radiation intensity sensor 6 by adjusting switchover ring 8
To position.
The device is mainly used for measure aerial temperature and humidity, aerosol concentration and its particle diameter distribution information, wind speed and direction, the sun
The parameters such as the sun reflected radiation on radiation intensity and photovoltaic cell surface, support is provided for the algorithm in embodiment 1.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
The specific implementation of the present invention is confined to these explanations.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the present invention's
Protection domain.
Claims (4)
1. a kind of measurement method of photovoltaic cell surface soil deposition amount, it is characterised in that：Include the following steps：
1.1：According to sand and dust particle diameter distribution information in air, sand and dust particle size distribution function f (r) is obtained；
1.2：Obtain intensity of solar radiation I0With photovoltaic cell reflected solar radiation intensity I1, calculate the surface for obtaining photovoltaic cell
Reflectivity η is
η=I1/I0；
1.3：Calculating the relative dielectric constant ε for obtaining and having sand and dust to cover photovoltaic cell surface dielectric is
Wherein, θ is the incidence angle of sunlight；
1.4：The representative fraction p of sandy environment is in calculating acquisition soil deposition layer
Wherein, εs、ε0The respectively dielectric constant of sandy environment and air；
1.5：Calculating acquisition photovoltaic cell surface soil deposition amount N is
Wherein, A is the area on photovoltaic cell surface.
2. a kind of measuring device of photovoltaic cell surface soil deposition amount, it is characterised in that：Including：
First input module, for inputting sand and dust particle diameter distribution information, intensity of solar radiation I0, photovoltaic cell reflected solar radiation
Intensity I1, angle of incidence of sunlight θ, sandy environment permittivity εs, dielectric constant of air ε0, photovoltaic cell surface area A just
Initial value；
First computing module, using following computational methods：
2.1：According to sand and dust particle diameter distribution information in air, sand and dust particle size distribution function f (r) is obtained,
2.2：Calculate the surface reflectivity η=I for obtaining photovoltaic cell1/I0,
2.3：Calculate the relative dielectric constant for obtaining and having sand and dust covering photovoltaic cell surface dielectric
2.4：Calculate the representative fraction for obtaining sandy environment in soil deposition layer
2.5：It calculates and obtains photovoltaic cell surface soil deposition amount
First output module, for exporting photovoltaic battery surface soil deposition amount N.
3. a kind of measurement method of the effective intensity of solar radiation in photovoltaic cell surface, it is characterised in that：Include the following steps：
3.1：Obtain the practical intensity of solar radiation I at photovoltaic cell mounting height0；
3.2：Calculating the acquisition photovoltaic cell effective intensity of solar radiation I in surface is
I=I0T,
Wherein,β is the transparent of photovoltaic cell surface sandy environment object in formula
Degree, N are photovoltaic cell surface soil deposition amount, and f (r) is sand and dust particle size distribution function.
4. a kind of measuring device of the effective intensity of solar radiation in photovoltaic cell surface, it is characterised in that：Including：
Second input module, for inputting the practical intensity of solar radiation I at photovoltaic cell mounting height0, photovoltaic cell surface it is husky
The transparency β of dirt particulate matter, the initial value and sand and dust particle size distribution function f (r) of photovoltaic cell surface soil deposition amount N；
Second computing module, it is I=I to obtain the photovoltaic cell effective intensity of solar radiation I in surface with the following method0T, wherein
Second output module, for exporting the effective intensity of solar radiation I of photovoltaic battery surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710549264.6A CN107179122B (en) | 2017-07-07 | 2017-07-07 | The measurement method and device of photovoltaic cell surface soil deposition and effective solar radiation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710549264.6A CN107179122B (en) | 2017-07-07 | 2017-07-07 | The measurement method and device of photovoltaic cell surface soil deposition and effective solar radiation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107179122A CN107179122A (en) | 2017-09-19 |
| CN107179122B true CN107179122B (en) | 2018-08-10 |
Family
ID=59845575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710549264.6A Active CN107179122B (en) | 2017-07-07 | 2017-07-07 | The measurement method and device of photovoltaic cell surface soil deposition and effective solar radiation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107179122B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2027172A (en) * | 2020-01-09 | 2021-08-30 | State Grid Ningxia Electric Power Co Ltd Eco Tech Res Institute | Photovoltaic panel structure capable of reducing influence of dust accumulation and method for designing photovoltaic panel structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103977897A (en) * | 2014-05-15 | 2014-08-13 | 无锡同春新能源科技有限公司 | Device used for collecting particulate matters in air by using solar generator as power supply |
| CN204101476U (en) * | 2014-08-11 | 2015-01-14 | 特变电工新疆新能源股份有限公司 | A kind of photovoltaic module superficial dust pick-up unit |
-
2017
- 2017-07-07 CN CN201710549264.6A patent/CN107179122B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103977897A (en) * | 2014-05-15 | 2014-08-13 | 无锡同春新能源科技有限公司 | Device used for collecting particulate matters in air by using solar generator as power supply |
| CN204101476U (en) * | 2014-08-11 | 2015-01-14 | 特变电工新疆新能源股份有限公司 | A kind of photovoltaic module superficial dust pick-up unit |
Non-Patent Citations (2)
| Title |
|---|
| Muhammad Akhlaq•Tarek R. Sheltami •.A review of techniques and technologies for sand and dust.《Rev Environ Sci Biotechnol》.2012,全文. * |
| 带电沙尘暴对电磁波传播过程的影响;闵星;《光学学报》;20150131;第35卷(第1期);全文 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2027172A (en) * | 2020-01-09 | 2021-08-30 | State Grid Ningxia Electric Power Co Ltd Eco Tech Res Institute | Photovoltaic panel structure capable of reducing influence of dust accumulation and method for designing photovoltaic panel structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107179122A (en) | 2017-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Gouda et al. | Model selection for accurate daily global solar radiation prediction in China | |
| Lindsay et al. | Errors in PV power modelling due to the lack of spectral and angular details of solar irradiance inputs | |
| CN109299820B (en) | Photovoltaic power generation power prediction method and device based on inclined plane radiation correction | |
| Huang | A rapid maximum power measurement system for high-concentration photovoltaic modules using the fractional open-circuit voltage technique and controllable electronic load | |
| Marion | Influence of atmospheric variations on photovoltaic performance and modeling their effects for days with clear skies | |
| Nepal et al. | Accurate soiling ratio determination with incident angle modifier for PV modules | |
| Theristis et al. | Performance of a concentrating photovoltaic monomodule under real operating conditions: Part I–Outdoor characterisation | |
| Assi et al. | Prediction of global solar radiation in Abu Dhabi | |
| Chitturi et al. | Efficiency of photovoltaic systems in mountainous areas | |
| CN107179122B (en) | The measurement method and device of photovoltaic cell surface soil deposition and effective solar radiation | |
| CN207036621U (en) | A kind of photovoltaic cell surface soil deposition measuring device | |
| CN106768314A (en) | A kind of apparatus and method for determining positive the south sun direct projection scattering irradiation in real time | |
| Guechi et al. | Environmental effects on the performance of nanocrystalline silicon solar cells | |
| CN102818979A (en) | Method for measuring photoelectric properties of curved solar batteries | |
| Li et al. | Evaluation index system for photovoltaic systems statistical characteristics under hazy weather conditions in central China | |
| Mayer | Design optimization and power forecasting of photovoltaic power plants | |
| Ying et al. | The characteristics and parameterizations of the surface albedo of a utility-scale photovoltaic plant in the Gobi Desert | |
| Zeqiang et al. | Research on performance test method of silicon pyranometer | |
| Chan et al. | Quantifying the impact of individual atmospheric parameters on CPV system power and energy yield | |
| CN107608008B (en) | Detection method for clear sky time period based on generalized atmospheric turbidity | |
| Huld et al. | A simple model for estimating the influence of spectrum variations on PV performance | |
| Sutterlueti et al. | Improved PV Performance modelling by combining the PV_LIB Toolbox with the Loss Factors Model (LFM) | |
| CN116861707B (en) | Solar shortwave radiation sea surface albedo parameterization method | |
| Cotfas et al. | WIRELESS SYSTEM FOR MONITORING THE SOLAR RADIATION. | |
| Nkhaili et al. | A newly designed ZnO/CdS/CuO: Co solar cell and its performance |
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 |