CN105356851A - Photovoltaic assembly incident angle impact factor test device and method - Google Patents
Photovoltaic assembly incident angle impact factor test device and method Download PDFInfo
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- CN105356851A CN105356851A CN201510940866.5A CN201510940866A CN105356851A CN 105356851 A CN105356851 A CN 105356851A CN 201510940866 A CN201510940866 A CN 201510940866A CN 105356851 A CN105356851 A CN 105356851A
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- 238000012360 testing method Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005259 measurement Methods 0.000 claims abstract description 44
- 238000010998 test method Methods 0.000 claims abstract description 15
- 238000004891 communication Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000005855 radiation Effects 0.000 abstract 1
- 238000010248 power generation Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003252 repetitive effect Effects 0.000 description 2
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- 238000005457 optimization Methods 0.000 description 1
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Classifications
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention discloses a photovoltaic assembly incident angle impact factor test device. The test device comprises a double-shaft tracking support having a pitch angle drive and a rotation angle drive, wherein a photovoltaic assembly to be tested is installed on the double-shaft tracking support. The test device is characterized in that a temperature sensor is arranged on the back surface of the photovoltaic assembly; the double-shaft tracking support is provided with a weather tracking measurement instrument, a total radiation gauge, a dip angle measurement instrument and an assembly short-circuit current test module. The test device also comprises a collection control cabinet for collecting and recording a numerical number, and calculating and outputting a control instruction. The invention also discloses a photovoltaic assembly incident angle impact factor test method. By adopting the method and device, the information of various factors influencing the performance of the photovoltaic assembly can be automatically acquired and calculated by virtue of an industrial personal computer of the collection control cabinet so as to obtain an accurate incidence angle impact factor value; the test is simple and accurate.
Description
Technical field
The present invention relates to a kind of photovoltaic testing apparatus and method of testing, particularly relate to a kind of photovoltaic module incidence angle factor of influence testing apparatus and method, belong to solar photovoltaic assembly technical field.
Background technology
Solar energy is as a kind of low-carbon (LC) regenerative resource, just worldwide flourish, and various countries' installation increases year by year.Photovoltaic system receives the sunlight energy by installation photovoltaic component and converts solar energy into direct current, then by photovoltaic DC-to-AC converter, direct current is converted to alternating current.The energy output of photovoltaic module directly has influence on the income of photovoltaic plant owner, and in industry, the corporate facility of specialty is all in the Study of Lifting of carrying out assembly height energy output.
The height of photovoltaic module energy output is subject to the impact of several factors, as: cell piece technique, assembly material, production technology etc.In the application, by the impact of sunrise sunset, the angle of incidence of light that each moment is radiated on photovoltaic module surface is all different for photovoltaic module.Incidence angle refers to that photovoltaic module installs the normal of rear place plane and the angle of sunlight incident ray, represents with θ.Incidence angle factor of influence refers to the definition of incidence angle to photovoltaic module performance impact degree, represents with t (θ).During different incidence angle, the value of incidence angle factor of influence is different, but has certain regularity.The photovoltaic module of different process, material shows different power generation performances under different incidence angles.For better studying and grasp the impact of incidence angle on photovoltaic module performance, promote the power generation performance of photovoltaic module, need the method for testing and the device that design a kind of photovoltaic module incidence angle factor of influence, in real time, dynamically measure for different angle of incidence of sunlight degree of analyzing and researching the impact of assembly power generation performance.At present, such method of testing rarely seen and testing apparatus.
Summary of the invention
The present invention is directed in prior art, the method measuring solar energy incidence angle and photovoltaic module power generation performance is complicated, artificial disturbance factor is many, the technical problems such as measurement result deviation is larger, a kind of photovoltaic module incidence angle factor of influence testing apparatus is provided, simplified measurement step, makes measurement result more accurate; Another aspect of the present invention, also provides a kind of photovoltaic module incidence angle factor of influence method of testing.
For this reason, the present invention adopts following technical scheme:
A kind of photovoltaic module incidence angle factor of influence testing apparatus, comprise and there is the tracking support with double shafts that the angle of pitch drives and corner drives, photovoltaic module to be tested is arranged on tracking support with double shafts, it is characterized in that: the back side of described photovoltaic module is provided with temperature sensor; Described tracking support with double shafts is provided with meteorological tracking measurement instrument, total irradiation table, dipmeter and assembly short circuit current test module, described meteorological tracking measurement instrument comprises optical sensor, direct light transducer and direct light normal plane inclination angle tester, meteorological tracking measurement instrument is according to the light sensor test feedback real-time tracking sun, by direct projection light sensors direct light irradiation, tested the angle β of incident light normal plane and horizontal plane by direct light normal plane inclination angle tester; Described total irradiation table carries out the real-time measurement of total irradiation and accumulative measurement; The angle α of photovoltaic module installed surface and horizontal plane measured in real time by described dipmeter; Described assembly short circuit current test module is for measuring the actual short current value of assembly when incidence angle is θ; Also comprise one for the collection control cubicle of acquisition and recording numerical value, computing and output control command.
Further, described collection control cubicle comprises and exports the industrial computer of control command for the multi-Channels Data Acquisition of acquisition and recording numerical value with for computing.
Further, the compartment of terrain, the back side of each photovoltaic module is provided with several temperature sensor.
Further, described tracking support with double shafts is provided with a mount pad, at grade, described meteorological tracking measurement instrument, total irradiation table and dipmeter are installed on this mount pad for the installed surface of this mount pad and the installed surface of photovoltaic module.
Another aspect of the present invention, also provides a kind of photovoltaic module incidence angle factor of influence method of testing, comprises the steps:
S1: photovoltaic module to be tested is installed on the tracking support with double shafts of testing apparatus;
S2: access and check temperature sensor, meteorological tracking measurement instrument, total irradiation table and dipmeter, assembly short circuit current test module, checking that whether the communication of the industrial computer in each transducer, instrument and functional module and collection control cubicle is normal;
S3: by gathering the angle of pitch and the corner of control cubicle regulation and control tracking support with double shafts, until be fixed on the incidence angle θ position needing test;
S4: utilize the synchronous record component temperature automatically of the multi-Channels Data Acquisition gathered in control cubicle, total irradiation, direct light irradiation, assembly Isc (short circuit current) value;
S5: adjustment tracking support with double shafts other incidence angle angle, repeats above step and measures, and industrial computer is calculated automatically by following computing formula and incidence angle factor of influence t (θ) under showing this incidence angle angle:
In formula:
Isco is the short-circuit current value of photovoltaic module under STC standard test condition, and this value can obtain on photovoltaic module nameplate, or to be remeasured by indoor traditional test methods in test and obtain exact value;
Isc (θ) is for direct light when incidence angle is θ is to photovoltaic module generation photoproduction short circuit current
The part of value contribution, Isc (θ) is calculated by following formula:
In formula:
The assembly actual short current value of Iscm (θ) for recording when incidence angle is θ, directly can be recorded by electronic load and voltage, current testing device;
α
iscfor the temperature coefficient of photovoltaic module, this value can obtain on photovoltaic module nameplate, or to be remeasured by indoor traditional test methods in test and obtain exact value;
Tc is the observed temperature of photovoltaic module, is the straight measured value in test process;
Go is with reference to irradiation value 1000W/ ㎡;
Gzhi (θ) is direct light irradiation, is the straight measured value in test process;
Gsan (θ) is scattered light irradiation, by formulae discovery below:
G
san(θ)＝G
ce(θ)-G
zhi(θ)·cosθ
Gce (θ) is total irradiation value of actual measurement.
Further, incidence angle θ is chosen at interval of 3 ° ~ 5 ° within the scope of-80 ° ~ 80 °.Be convenient to the curve drawing incidence angle θ and incidence angle factor of influence t (θ).
Further, in step s 4 which, test assembly temperature, total irradiation, direct light irradiation, assembly Isc (short circuit current) value at interval of 5-10s, average and calculate.
Incidence angle θ directly can be read by industrial computer interface, the Measurement and Computation principle of incidence angle θ is: carry out Measurement and Computation by tracking support with double shafts top rade tester and direct light normal plane inclination angle tester, the angle that inclination angle tester records assembly mounting plane and horizontal plane is α, direct light followed the tracks of by meteorological tracking measurement instrument, and direct light inclination angle tester mounted thereto records direct light normal plane and horizontal plane angle is β; Can calculate according to triangulation calculation principle: incidence angle θ=β-α.
Photovoltaic module incidence angle factor of influence testing apparatus of the present invention and method, by arranging tracking support with double shafts and rack-mount meteorological tracking measurement instrument, always irradiation table, dipmeter and assembly short circuit current test module, automatic collection is to the information of the influential every factor of photovoltaic module performance, carry out computing by the industrial computer gathering control cubicle, draw incidence angle factor of influence value accurately; Eliminate the link of manual hand manipulation in test process, decrease disturbing factor, test result is more accurate; Improve operating efficiency; Assembly property under dynamic measurement components dry run state, under different external environment condition, for optimization component performance provides the most real measurement data.
Accompanying drawing explanation
Fig. 1 is the structural representation of testing apparatus of the present invention;
Fig. 2 is the A portion enlarged drawing of Fig. 1;
In figure, 1 is tracking support with double shafts, 11 be mount pad, 2 for temperature sensor, 3 be meteorological tracking measurement instrument, and 4 be total irradiation table, and 5 is dipmeter, and 6 is collection control cubicle, and 100 is photovoltaic module.
Embodiment
In order to make those skilled in the art person better understand the present invention program, carry out clear, complete description below in conjunction with accompanying drawing to technical scheme of the present invention, part same as the prior art in the present invention is with reference to prior art.
Embodiment 1:
As shown in Figure 1-2, photovoltaic module incidence angle factor of influence testing apparatus of the present invention, comprise and there is the tracking support with double shafts 1 that the angle of pitch drives and corner drives, photovoltaic module 100 to be tested is arranged on tracking support with double shafts, the back side of described photovoltaic module 100 is provided with temperature sensor 2, as preferably, the compartment of terrain, the back side of each photovoltaic module 100 is provided with several temperature sensor 2, the temperature information of multipoint acquisition photovoltaic module, makes measurement result more accurate.
Tracking support with double shafts is provided with polylith photovoltaic module 100, be four pieces in the present embodiment, tracking support with double shafts 1 is provided with a mount pad 11, the installed surface of this mount pad and the installed surface of photovoltaic module at grade, mount pad 11 are provided with meteorological tracking measurement instrument 3, total irradiation table 4, dipmeter 5 and assembly short circuit current test module (not shown).
Meteorological tracking measurement instrument 3 comprises optical sensor, direct light transducer and direct light normal plane inclination angle tester, meteorological tracking measurement instrument is according to the light sensor test feedback real-time tracking sun, by direct projection light sensors direct light irradiation, tested the angle β of incident light normal plane and horizontal plane by direct light normal plane inclination angle tester; Meteorological tracking measurement instrument can together carry out the tracking of the sun with dual-axis tracking system, and also can follow the tracks of separately, whether dual-axis tracking system follows the tracks of the real-time tracking that the sun does not affect tracking measurement instrument.
Total irradiation table 4 carries out the real-time measurement of total irradiation and accumulative measurement; The angle α of photovoltaic module installed surface and horizontal plane measured in real time by dipmeter 5; Described assembly short circuit current test module is for measuring the actual short current value of assembly when incidence angle is θ.
Gather control cubicle 6 to comprise and export the industrial computer of control command for the multi-Channels Data Acquisition of acquisition and recording numerical value with for computing.
Tracking support with double shafts in the present invention, has angle of pitch driving in employing prior art and corner drives, from the tracking support with double shafts of the motion tracking sun, can not describe in detail.
Embodiment 2
Another aspect of the present invention, provides a kind of photovoltaic module incidence angle factor of influence method of testing, comprises the steps:
S1: photovoltaic module to be tested is installed on the tracking support with double shafts of testing apparatus;
S2: access and check temperature sensor, meteorological tracking measurement instrument, total irradiation table and dipmeter, assembly short circuit current test module, checking that whether the communication of the industrial computer in each transducer, instrument and functional module and collection control cubicle is normal;
S3: by gathering the angle of pitch and the corner of control cubicle regulation and control tracking support with double shafts, until be fixed on the incidence angle θ position needing test;
S4: utilize the synchronous record component temperature automatically of the multi-Channels Data Acquisition gathered in control cubicle, total irradiation, direct light irradiation, assembly Isc (short circuit current) value;
S5: adjustment tracking support with double shafts other incidence angle angle, repeats above step and measures, and industrial computer is calculated automatically by following computing formula and incidence angle factor of influence t (θ) under showing this incidence angle angle:
In formula:
Isco is the short-circuit current value of photovoltaic module under STC standard test condition, and this value can obtain on photovoltaic module nameplate, or to be remeasured by indoor traditional test methods in test and obtain exact value;
Isc (θ) is for direct light when incidence angle is θ is to the part of photovoltaic module generation photoproduction short-circuit current value contribution, and Isc (θ) is calculated by following formula:
In formula:
The assembly actual short current value of Iscm (θ) for recording when incidence angle is θ, directly can be recorded by electronic load and voltage, current testing device;
α
iscfor the temperature coefficient of photovoltaic module, this value can obtain on photovoltaic module nameplate, or to be remeasured by indoor traditional test methods in test and obtain exact value;
Tc is the observed temperature of photovoltaic module, is the straight measured value in test process;
Go is with reference to irradiation value 1000W/ ㎡;
Gzhi (θ) is direct light irradiation, is the straight measured value in test process;
Gsan (θ) is scattered light irradiation, by formulae discovery below:
G
san(θ)＝G
ce(θ)-G
zhi(θ)·cosθ
Gce (θ) is total irradiation value of actual measurement.
Incidence angle θ is chosen at interval of 3 ° ~ 5 ° within the scope of-80 ° ~ 80 °, preferred interval 5 °.Be convenient to the curve drawing incidence angle θ and incidence angle factor of influence t (θ), to increase the smoothness of curve.
In step s 4 which, assembly temperature, total irradiation, direct light irradiation, assembly Isc (short circuit current) value is tested at interval of 5-10s, the mean value getting repetitive measurement value calculates, mean value can be the mean value of fixed number of times, as the mean value of 10 measured values, also can be the mean value of repetitive measurement value in set time section, as the mean value of measured value for several times in 1 minute; To obtain measurement data more accurately.
Incidence angle θ directly can be read by industrial computer interface, the Measurement and Computation principle of incidence angle θ is: carry out Measurement and Computation by tracking support with double shafts top rade tester and direct light normal plane inclination angle tester, the angle that inclination angle tester records assembly mounting plane and horizontal plane is α, direct light followed the tracks of by meteorological tracking measurement instrument, and direct light inclination angle tester mounted thereto records direct light normal plane and horizontal plane angle is β; Can calculate according to triangulation calculation principle: incidence angle θ=β-α.
Obviously, described embodiment is only section Example of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
Claims (7)
1. a photovoltaic module incidence angle factor of influence testing apparatus, comprise and there is the tracking support with double shafts that the angle of pitch drives and corner drives, photovoltaic module to be tested is arranged on tracking support with double shafts, it is characterized in that: the back side of described photovoltaic module is provided with temperature sensor; Described tracking support with double shafts is provided with meteorological tracking measurement instrument, total irradiation table, dipmeter and assembly short circuit current test module, described meteorological tracking measurement instrument comprises optical sensor, direct light transducer and direct light normal plane inclination angle tester, meteorological tracking measurement instrument is according to the light sensor test feedback real-time tracking sun, by direct projection light sensors direct light irradiation, tested the angle β of incident light normal plane and horizontal plane by direct light normal plane inclination angle tester; Described total irradiation table carries out the real-time measurement of total irradiation and accumulative measurement; The angle α of photovoltaic module installed surface and horizontal plane measured in real time by described dipmeter; Described assembly short circuit current test module is for measuring the actual short current value of assembly when incidence angle is θ; Also comprise one for the collection control cubicle of acquisition and recording numerical value, computing and output control command.
2. photovoltaic module incidence angle factor of influence testing apparatus according to claim 1, is characterized in that: described collection control cubicle comprises and exports the industrial computer of control command for the multi-Channels Data Acquisition of acquisition and recording numerical value with for computing.
3. photovoltaic module incidence angle factor of influence testing apparatus according to claim 1, is characterized in that: the compartment of terrain, the back side of each photovoltaic module is provided with several temperature sensor.
4. photovoltaic module incidence angle factor of influence testing apparatus according to claim 1, it is characterized in that: described tracking support with double shafts is provided with a mount pad, at grade, described meteorological tracking measurement instrument, total irradiation table and dipmeter are installed on this mount pad for the installed surface of this mount pad and the installed surface of photovoltaic module.
5. a photovoltaic module incidence angle factor of influence method of testing, comprises the steps:
S1: photovoltaic module to be tested is installed on the tracking support with double shafts of testing apparatus;
S2: access and check temperature sensor, meteorological tracking measurement instrument, total irradiation table and dipmeter, assembly short circuit current test module, checking that whether the communication of the industrial computer in each transducer, instrument and functional module and collection control cubicle is normal;
S3: by gathering the angle of pitch and the corner of control cubicle regulation and control tracking support with double shafts, until be fixed on the incidence angle θ position needing test;
S4: utilize the synchronous record component temperature automatically of the multi-Channels Data Acquisition gathered in control cubicle, total irradiation, direct light irradiation, assembly Isc (short circuit current) value;
S5: adjustment tracking support with double shafts other incidence angle angle, repeats above step and measures, and industrial computer is calculated automatically by following computing formula and incidence angle factor of influence t (θ) under showing this incidence angle angle:
In formula:
Isco is the short-circuit current value of photovoltaic module under STC standard test condition, and this value can obtain on photovoltaic module nameplate, or to be remeasured by indoor traditional test methods in test and obtain exact value;
Isc (θ) is for direct light when incidence angle is θ is to the part of photovoltaic module generation photoproduction short-circuit current value contribution, and Isc (θ) is calculated by following formula:
In formula:
The assembly actual short current value of Iscm (θ) for recording when incidence angle is θ, directly can be recorded by electronic load and voltage, current testing device;
α
iscfor the temperature coefficient of photovoltaic module, this value can obtain on photovoltaic module nameplate, or to be remeasured by indoor traditional test methods in test and obtain exact value;
Tc is the observed temperature of photovoltaic module, is the straight measured value in test process;
Go is with reference to irradiation value 1000W/m
2;
Gzhi (θ) is direct light irradiation, is the straight measured value in test process;
Gsan (θ) is scattered light irradiation, by formulae discovery below:
G
san(θ)＝G
ce(θ)-G
zhi(θ)·cosθ
Gce (θ) is total irradiation value of actual measurement.
6. photovoltaic module incidence angle factor of influence method of testing according to claim 5, is characterized in that: incidence angle θ is chosen at interval of 3 ° ~ 5 ° within the scope of-80 ° ~ 80 °.
7. photovoltaic module incidence angle factor of influence method of testing according to claim 5, it is characterized in that: in step s 4 which, test assembly temperature, total irradiation, direct light irradiation, assembly Isc (short circuit current) value at interval of 5-10s, average and calculate.
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| CN108615345A (en) * | 2018-04-10 | 2018-10-02 | 中山大学 | A kind of wireless remote sensor-based system of photoelectric coupling |
| CN111474962A (en) * | 2020-05-09 | 2020-07-31 | 广东产品质量监督检验研究院（国家质量技术监督局广州电气安全检验所、广东省试验认证研究院、华安实验室） | Optimization method of installation angle of solar double-sided photovoltaic module and pitching tracking system |
| CN114624172A (en) * | 2022-03-30 | 2022-06-14 | 无锡市检验检测认证研究院 | Testing method of photovoltaic material-based outdoor demonstration accelerated aging testing system |
| CN117367771A (en) * | 2023-10-08 | 2024-01-09 | 天合光能股份有限公司 | Tracking bracket aging test method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108615345A (en) * | 2018-04-10 | 2018-10-02 | 中山大学 | A kind of wireless remote sensor-based system of photoelectric coupling |
| CN111474962A (en) * | 2020-05-09 | 2020-07-31 | 广东产品质量监督检验研究院（国家质量技术监督局广州电气安全检验所、广东省试验认证研究院、华安实验室） | Optimization method of installation angle of solar double-sided photovoltaic module and pitching tracking system |
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| CN114624172B (en) * | 2022-03-30 | 2024-01-05 | 无锡市检验检测认证研究院 | Test method based on photovoltaic material outdoor demonstration accelerated aging test system |
| CN117367771A (en) * | 2023-10-08 | 2024-01-09 | 天合光能股份有限公司 | Tracking bracket aging test method and device |
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