CN111478666A - Device and method for detecting electrical parameters of photovoltaic panel monomer under different illumination conditions - Google Patents
Device and method for detecting electrical parameters of photovoltaic panel monomer under different illumination conditions Download PDFInfo
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- CN111478666A CN111478666A CN202010311109.2A CN202010311109A CN111478666A CN 111478666 A CN111478666 A CN 111478666A CN 202010311109 A CN202010311109 A CN 202010311109A CN 111478666 A CN111478666 A CN 111478666A
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- 239000000178 monomer Substances 0.000 title claims abstract description 101
- 238000005286 illumination Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000008859 change Effects 0.000 claims abstract description 6
- 238000004088 simulation Methods 0.000 claims description 11
- 229910001507 metal halide Inorganic materials 0.000 claims description 10
- 150000005309 metal halides Chemical class 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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- 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
- H02S50/15—Testing of PV devices, e.g. of PV modules or single PV cells using optical means, e.g. using electroluminescence
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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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- Photovoltaic Devices (AREA)
Abstract
The invention discloses a device and a method for detecting electrical parameters of a photovoltaic panel monomer under different illumination conditions. The device includes mechanical support, mechanical support is last to install the backup pad, solar photovoltaic board group is installed to the below of backup pad, be provided with a plurality of solar light source analog lamp in the backup pad, be provided with a plurality of rows of photovoltaic board monomer unit on the solar photovoltaic board group, every row of photovoltaic board monomer unit all includes a plurality of photovoltaic board monomer, the relation of connection between the photovoltaic board monomer unit can change, thereby form different series-parallel structure, the quantity of solar light source analog lamp is the same with the free quantity of photovoltaic board, and install in same high position directly over every photovoltaic board monomer one-to-one. By adopting the device and the method, when different positions of the photovoltaic panel are shielded, the influence of the photovoltaic panel on the output electrical parameters of the photovoltaic panel can be measured, so that early warning can be performed before the whole electric quantity is reduced, and whether cleaning is performed or not can be judged according to the shielding positions and the shielding quantity.
Description
Technical Field
The invention relates to a device and a method for researching output performance and electrical parameters of a photovoltaic panel under the condition that the photovoltaic panel is partially lack of illumination
Background
In recent years, the application and the gradual popularization of a photovoltaic panel of a photovoltaic power station are promoted by using new energy, but along with the extension of the working time of the photovoltaic panel, the problems of aging, heating faults, defects and the like of the photovoltaic panel all bring serious challenges to the operation and maintenance of the photovoltaic power station. The traditional solar photovoltaic panel detection adopts manual inspection, is low in efficiency, large in workload, high in cost and large in potential safety hazard, and is not feasible after being adopted for a long time.
Because sheltering from of the leaf of external environment, tree cloudy, bird droppings, local lack illumination in the photovoltaic board influences the output performance of photovoltaic board, but when different positions sheltered from, the influence to photovoltaic board output voltage was different, and the photovoltaic board must wash the surface after also not sheltering from. Because the cost of the cleaning process is high, if the cleaning process is carried out after the whole electric quantity of the photovoltaic power station is reduced, the economic benefit is influenced. If can early warning in advance before whole electric quantity descends, judge whether wash through sheltering from the position and sheltering from the quantity, then can reduce the cleaning cost, improve the generating efficiency.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a device and a method for detecting the electrical parameters of a photovoltaic panel monomer under different illumination conditions.
The technical scheme of the invention is as follows:
photovoltaic board monomer electrical parameter detection device under different illumination conditions, including mechanical support, the last backup pad of installing of mechanical support, solar photovoltaic board group is installed to the below of backup pad, be provided with a plurality of solar light source analog lamp in the backup pad, be provided with a plurality of rows of photovoltaic board monomer unit on the solar photovoltaic board group, every row of photovoltaic board monomer unit all includes a plurality of photovoltaic board monomers, the relation of connection between the photovoltaic board monomer unit can change to form different series-parallel structure, the quantity of solar light source analog lamp is the same with the free quantity of photovoltaic board, and installs in same high position directly over every photovoltaic board monomer one-to-one.
Furthermore, the outer part of each solar light source simulation lamp is covered with a lampshade, and the lampshade enables the light source to only directly irradiate the photovoltaic panel monomer below the lampshade and not irradiate other photovoltaic panel monomers.
Furthermore, an industrial robot is arranged on the mechanical support and comprises a sliding block capable of sliding up and down, and the supporting plate is fixed on the sliding block.
Furthermore, the solar light source simulation lamp can control on and off and adjust brightness.
Furthermore, the solar light source simulation lamp is a metal halide lamp.
The method for detecting the electrical parameters of the photovoltaic panel monomer under different illumination conditions comprises the following steps:
1) shielding of single photovoltaic panel series branch
Turning off or regulating the brightness of any one or more light sources in any row of photovoltaic panel monomer units, namely, any one or more monomers in any serial branch in the solar photovoltaic panel group are not irradiated or are not shielded sufficiently, and other monomers are illuminated, and observing the voltage and current changes at the output end of the photovoltaic panel, thereby simulating the influence on the output electrical parameters of the photovoltaic panel when the serial monomers are shielded;
2) shielding of single parallel branch of single photovoltaic panel
Turning off or regulating the brightness of any one or more of the photovoltaic panel monomer units in any row and any one or more combined light sources in the adjacent row of photovoltaic panel monomer units, namely, the light sources that a plurality of monomers of any parallel branch in the solar photovoltaic panel group are not irradiated or insufficiently shielded, and other monomers are irradiated with light, and observing the voltage and current changes of the output end of the photovoltaic panel, thereby simulating the influence of the shielding of the parallel monomers on the output electrical parameters of the photovoltaic panel;
3) shielding of single photovoltaic panel series-parallel mixed branch monomer
Turning off or adjusting the brightness of any one or more combined light sources in each row of photovoltaic panel monomer units, namely, a light source which is not irradiated or insufficiently shielded by any one of the multiple monomers of the series-parallel branch in the photovoltaic panel monomer, and observing the voltage and current changes of the output end of the photovoltaic panel when other monomers are irradiated, so as to simulate the influence of the series-parallel monomer on the output electrical parameters of the photovoltaic panel when the series-parallel monomer is shielded;
4) and changing the number and the connection form of the photovoltaic panel monomer units, repeating the steps, and simulating the influence of the photovoltaic panel group on the output electrical parameters of the photovoltaic panel group when the photovoltaic panel group is blocked by the serial and parallel monomers.
The invention has the following beneficial effects:
according to the device and the method for detecting the electrical parameters of the photovoltaic panel monomer under different illumination conditions, when different positions of the photovoltaic panel are shielded, the influence of the photovoltaic panel monomer on the electrical parameters output by the photovoltaic panel can be effectively and conveniently measured, so that early warning can be performed before the whole electric quantity is reduced, whether cleaning is performed or not is judged according to the shielding positions and the shielding quantity, the cleaning cost can be reduced, and the power generation efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of the frame structure of the detecting device of the present invention;
FIG. 2 is a schematic view of the internal structure of the detecting unit of the present invention;
FIG. 3 is a schematic diagram of the detection method of the present invention.
The labels in the figure are: 1. a mechanical support; 2. an industrial robot; 3. a support plate; 4. a solar photovoltaic panel group; 5. a connecting frame; 6. a first metal halide lamp; 7. a second metal halide lamp; 8. a third metal halide lamp; 9. a lamp shade; 10. a first photovoltaic panel monomer; 11. a second photovoltaic panel monomer; 12. a third photovoltaic panel monomer; 13. a photovoltaic panel output; 3-1, a first light source; 3-2, a second light source; 3-3, a third light source; 3-4, a fourth light source; 3-5, a fifth light source; 3-6, a sixth light source; 3-7, a seventh light source; 3-8, an eighth light source; 3-9, ninth light source; 3-10, tenth light source; 3-11, an eleventh light source; 3-12, a twelfth light source; 3-13, a thirteenth light source; 3-14, a fourteenth light source; 3-15, a fifteenth light source; 3-16, sixteenth light source; 3-17, a seventeenth light source; 3-18, eighteenth light source; 3-19, nineteenth light source; 3-20, twentieth light source; 3-21, a twenty-first light source; 3-22, a twenty-second light source; 3-23, a twenty-third light source; 3-24, twenty-fourth light source.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The invention mainly researches the electrical parameters of the photovoltaic panel monomer under different illumination conditions. The photovoltaic panel is laid in the laboratory, and under the condition of lacking external light source, according to photovoltaic panel monomer's range, build incandescent lamp, peripheral mechanical device and circuit above every monomer, the state of generating heat of simulation sun, through the light and darkness and the luminance of each light source of control monomer top, degree and quantity that the simulation shadow sheltered from observe electrical parameters such as output voltage, electric current and power of photovoltaic board group. The measurement of various working states of the photovoltaic panel is realized by simulating the monomer under different combination conditions of the irradiation of the solar light source in a laboratory. Through research, the relation between the position that the shadow sheltered from and the photovoltaic board electrical parameter is convenient for observe.
The technical scheme adopted by the embodiment is as follows:
step 1: a device for detecting electrical parameters of photovoltaic panel by simulating solar light source is set up (as shown in figures 1 and 2)
Step 1.1: the device includes mechanical support 1, the mechanical support both sides are provided with 2 industrial robot 2, and erection bracing board 3 is gone up to industrial robot slider in the middle of the mechanical support, and the mechanical support below is provided with solar photovoltaic board group 4.
Step 1.2: 4 groups of connecting frames 5 are arranged on the supporting plate, a first metal halide lamp 6 and a lampshade 9 simulating a solar light source are hung under the connecting frames, and bulbs are arranged right above each photovoltaic panel monomer at the same height. For example, the first metal halide lamp 6 corresponds to the first photovoltaic panel monomer 10, the second metal halide lamp 7 corresponds to the second photovoltaic panel monomer 11, and the third metal halide lamp 8 corresponds to the third photovoltaic panel monomer 12. The lampshade ensures that the light source can directly irradiate the lower monomer and prevent other monomers vertically below from being irradiated. The number of light sources is consistent with the number of monomers in the photovoltaic panel assembly. The light source has the functions of on-off and brightness adjustment.
Step 1.3: and (5) building the solar photovoltaic panel.
The photovoltaic panel groups are placed below the light sources, different series-parallel connection forms can be set according to actual requirements, and the number of the corresponding light sources can be matched according to the number of the photovoltaic panels.
Step 2: controlling the light source to achieve simulation of different states of the photovoltaic panel (as shown in FIG. 3)
In this embodiment, four rows of photovoltaic panel single units are taken as an example for illustration, and only the front 3 and the back 3 light sources of each row are shown in fig. 3, that is, only the first light source 3-1, the second light source 3-2, the third light source 3-3, the fourth light source 3-4, the fifth light source 3-5, the sixth light source 3-6, the seventh light source 3-7, the eighth light source 3-8, the ninth light source 3-9, the tenth light source 3-10, the eleventh light source 3-11, the twelfth light source 3-12, the thirteenth light source 3-13, the fourteenth light source 3-14, the fifteenth light source 3-15, the sixteenth light source 3-16, the seventeenth light source 3-17, the eighteenth light source 3-18, the nineteenth light source 3-19, the twentieth light source 3-20, the fourteenth light source 3-14, the fifteenth light source 3-15, the, Twenty-first light sources 3-21, twenty-second light sources 3-22, twenty-third light sources 3-23, and twenty-fourth light sources 3-24.
Step 2.1: shielding of single photovoltaic panel series branch
For example, turning off or adjusting the brightness of any one or more of the first light source 3-1 to the sixth light source 3-6, the seventh light source 3-7 to the twelfth light source 3-12, the thirteenth light source 3-13 to the eighteenth light source 3-18, and the nineteenth light source 3-19 to the twenty-fourth light source 3-24, that is, representing that any one or more of the series branches of the photovoltaic panel monomers is not irradiated or insufficiently shielded, the other monomers are irradiated with light, and the voltage and current change conditions of the output end (13) of the photovoltaic panel are observed.
The part is mainly controlled by a light source above the series monomer, and influences on the output electrical parameters of the photovoltaic panel when the series monomer is shielded are simulated.
Step 2.2: shielding of single parallel branch of single photovoltaic panel
For example, the light source is a combination of one or more of the first light source 3-1 to the sixth light source 3-6 and one or more of the seventh light source 3-7 to the twelfth light source 3-12, i.e., a light source representing that a plurality of single bodies of any parallel branch in a photovoltaic panel monomer are not irradiated or insufficiently shielded, and other single bodies are irradiated with light to observe the change of the voltage and current at the output end of the photovoltaic panel.
The part is mainly controlled by a light source above the parallel monomer, and influences on the output electrical parameters of the photovoltaic panel when the parallel monomer is shielded are simulated.
Step 2.3: shielding of single photovoltaic panel series-parallel mixed branch monomer
For example, the light source is any one or a combination of more of a first metal halide lamp first light source 3-1-a sixth light source 3-6, a seventh light source 3-7-a twelfth light source 3-12, a thirteenth light source 3-13-an eighteenth light source 3-18, a nineteenth light source 3-19-a twenty-fourth light source 3-24, namely, a light source which represents that a plurality of monomers of any serial-parallel branch in a photovoltaic panel monomer are not irradiated or insufficiently shielded, and other monomers are irradiated by light to observe the voltage and current change condition of the output end of the photovoltaic panel.
The part is mainly controlled by a light source above the series-parallel mixed branch monomer, and influences on the output electrical parameters of the photovoltaic panel when the series-parallel mixed branch monomer is shielded are simulated.
And step 3: changing the number and connection form of photovoltaic panel groups
A plurality of photovoltaic panels can be connected in series or in parallel, light sources corresponding to the number of the monomers are built, and the step 2 is repeated.
The influence of series-parallel connection monomers of the photovoltaic panel groups on the output electrical parameters of the photovoltaic panel groups is simulated mainly by changing the connection form and the number of the photovoltaic panel groups.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
And 4, step 4: manually adjusting the distance between light sources according to different types of photovoltaic panels
Aiming at photovoltaic panels of different types and sizes, the distance between rows can be manually adjusted, and the distance between light sources in each row can also be adjusted. The monomers with different distances below the monomer are ensured.
Claims (6)
1. Photovoltaic board monomer electrical parameter detection device under different illumination conditions, its characterized in that: including mechanical support (1), install backup pad (3) on mechanical support (1), solar photovoltaic board group (4) are installed to the below of backup pad (3), be provided with a plurality of solar light source simulation lamp on backup pad (3), be provided with a plurality of rows of photovoltaic board monomer unit on solar photovoltaic board group (4), every row of photovoltaic board monomer unit all includes a plurality of photovoltaic board monomers, the relation of connection between the photovoltaic board monomer unit can change to form different series-parallel connection structures, the quantity of solar light source simulation lamp is the same with the free quantity of photovoltaic board, and installs in same high position directly over every photovoltaic board monomer one-to-one.
2. The device for detecting the electrical parameters of the photovoltaic panel monomer under different illumination conditions according to claim 1, wherein: the outer part of each solar light source simulation lamp is covered with a lampshade (9), and the lampshade (9) enables a light source to only directly irradiate a photovoltaic panel monomer below the lamp, but not irradiate other photovoltaic panel monomers.
3. The device for detecting the electrical parameters of the photovoltaic panel monomer under different illumination conditions according to claim 1, wherein: be provided with industrial robot (2) on mechanical support (1), industrial robot (2) are including the slider that can go up and down to slide, backup pad (3) are fixed in on the slider.
4. The device for detecting the electrical parameters of the photovoltaic panel monomer under different illumination conditions according to claim 1, wherein: the solar light source simulation lamp can control on and off and adjust brightness.
5. The device for detecting the electrical parameters of the photovoltaic panel monomer under different illumination conditions according to claim 1, wherein: the solar light source simulation lamp is a metal halide lamp.
6. The method for detecting the electrical parameters of the photovoltaic panel monomer under different illumination conditions comprises the following steps:
1) shielding of single photovoltaic panel series branch
Turning off or adjusting the brightness of any one or more light sources in any row of photovoltaic panel monomer units, namely, any one or more monomers in any serial branch in the solar photovoltaic panel group (4) are not irradiated or are not shielded sufficiently, and other monomers are irradiated, and the voltage and current changes of the output end (13) of the photovoltaic panel are observed, so that the influence on the output electrical parameters of the photovoltaic panel when the serial monomers are shielded is simulated;
2) shielding of single parallel branch of single photovoltaic panel
Turning off or adjusting the brightness of any one or more of the photovoltaic panel monomer units in any row and any one or more combined light sources in the adjacent row of photovoltaic panel monomer units, namely, the light sources that a plurality of monomers of any parallel branch in the solar photovoltaic panel group (4) are not irradiated or insufficiently shielded, and other monomers are irradiated, and the voltage and current changes of the output end (13) of the photovoltaic panel are observed, so that the influence of the output electrical parameters of the photovoltaic panel when the parallel monomers are shielded is simulated;
3) shielding of single photovoltaic panel series-parallel mixed branch monomer
Turning off or adjusting the brightness of any one or more combined light sources in each row of photovoltaic panel monomer units, namely, a light source which is not irradiated or insufficiently shielded by any one of the multiple monomers of the serial-parallel branch in the photovoltaic panel monomer, and observing the voltage and current changes of the output end (13) of the photovoltaic panel when other monomers are irradiated, so as to simulate the influence of the serial-parallel monomer on the output electrical parameters of the photovoltaic panel when the serial-parallel monomer is shielded;
4) and changing the number and the connection form of the photovoltaic panel monomer units, repeating the steps, and simulating the influence of the photovoltaic panel group on the output electrical parameters of the photovoltaic panel group when the photovoltaic panel group is blocked by the serial and parallel monomers.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010311109.2A CN111478666B (en) | 2020-04-20 | 2020-04-20 | Device and method for detecting electrical parameters of photovoltaic panel monomer under different illumination conditions |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010311109.2A CN111478666B (en) | 2020-04-20 | 2020-04-20 | Device and method for detecting electrical parameters of photovoltaic panel monomer under different illumination conditions |
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| CN111478666A true CN111478666A (en) | 2020-07-31 |
| CN111478666B CN111478666B (en) | 2021-04-02 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108011588A (en) * | 2017-11-29 | 2018-05-08 | 常州工学院 | The apparatus and method that analog solar light source realizes photovoltaic panel detection |
| CN208572037U (en) * | 2018-08-08 | 2019-03-01 | 常州华阳检验检测技术有限公司 | A kind of photovoltaic module sun steady-state simulation device |
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- 2020-04-20 CN CN202010311109.2A patent/CN111478666B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108011588A (en) * | 2017-11-29 | 2018-05-08 | 常州工学院 | The apparatus and method that analog solar light source realizes photovoltaic panel detection |
| CN208572037U (en) * | 2018-08-08 | 2019-03-01 | 常州华阳检验检测技术有限公司 | A kind of photovoltaic module sun steady-state simulation device |
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