CN104076313A - Online calibration device for solar simulator electronic load case - Google Patents
Online calibration device for solar simulator electronic load case Download PDFInfo
- Publication number
- CN104076313A CN104076313A CN201410259383.4A CN201410259383A CN104076313A CN 104076313 A CN104076313 A CN 104076313A CN 201410259383 A CN201410259383 A CN 201410259383A CN 104076313 A CN104076313 A CN 104076313A
- Authority
- CN
- China
- Prior art keywords
- solar simulator
- electronic load
- load box
- data collection
- collection device
- 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.)
- Pending
Links
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The invention discloses an online calibration device for a solar simulator electronic load case. The online calibration device is used for online calibration of the measuring accuracy of current, voltage and power of the solar simulator electronic load case and comprises a photovoltaic module (1), a Y-type three-joint connector (2), a rapid data collector (3), a Hall closed-loop current sensor (4) and a computer (5). Signals obtained through detection by the online calibration device are signals collected by the rapid data collector (3), one signal is a voltage signal obtained after being I-V conversion by the Hall closed-loop current sensor, the other signal is a voltage signal output by the photovoltaic module (1), AD conversion is performed on the two signals through the rapid data collector (3), then, the signals are output to the computer (5), and a data curve is displayed by the computer (5). According to the online calibration device, the technical problem of calibrating the solar simulator electronic load case under the transient condition is solved, the measuring accuracy of the current, the voltage and the power is calibrated at the same time, and calibration of an IV curve is achieved.
Description
Technical field
The present invention relates to solar simulator electronic load box collimation technique field, be specifically related to a kind of solar simulator electronic load box on-line calibration device, for the accuracy of measurement of the electric current of on-line calibration solar simulator electronic load box, voltage, power.
Background technology
Solar simulator is a kind of light source of simulating nature solar spectrum and irradiance, conventionally light source and power supply, optics and optical filter, control operation system, electronic load box etc., consists of.Compare with the true sun, solar simulator has the advantages such as stability by force, is not subject to that Changes in weather affects.Electronic load box as solar simulation the most the parts of core be widely used in the test of photovoltaic module and solar cell photoelectric properties (as short-circuit current, open-circuit voltage, peak power, conversion efficiency, fill factor, curve factor etc.), the quality of its performance has determined the accuracy that photovoltaic module and solar cell photoelectric properties are measured, and directly has influence on economic interests and finally practical application and the assessment of photovoltaic plant in assembly trade settlement process.Domestic and international market existing solar simulator electronic load box performance is very different, has to a great extent the erroneous judgement to photovoltaic module power measurement result.In order to guarantee the accuracy of its measurement, must calibrate solar simulator electronic load box.
Now to the calibration of solar simulator electronic load box, mostly electronic load box need to be separated to simulator, then sending China Metrology Accreditation mechanism to calibrates, and the cycle is longer, reduced to a great extent the utilization ratio of solar simulator, affected the production capacity of photovoltaic enterprise.And off-line calibration adopts source of stable pressure and constant-current source to input as signal conventionally, tests respectively the accuracy of measurement of electronic load tank current, voltage, exist differently from the sampling mode that mostly is transient acquisition in actual application, may introduce measuring error.
Summary of the invention
(1) technical matters that will solve
In view of this, fundamental purpose of the present invention is to provide a kind of solar simulator electronic load box on-line calibration device, to solve the technological difficulties of calibrating solar simulator electronic load box under transient condition, and calibration current, voltage, power measurement accuracy simultaneously, realize the calibration of IV curve.
(2) technical scheme
For achieving the above object, the invention provides a kind of solar simulator electronic load box on-line calibration device, this device comprises photovoltaic module 1, Y-type three way type connector 2, rapid data collection device 3, Hall closed loop current sensor 4 and computing machine 5, wherein:
Photovoltaic module 1, consists of with array format a plurality of solar cell pieces, positive towards solar simulator light source, for this solar simulator electronic load box on-line calibration device provides voltage and current signal source;
Y-type three way type connector 2, adopts unshielded cable to form, and one end is binary channels interface, and the other end is single channel interface, and photovoltaic module 1 is docked with rapid data collection device 3 and solar simulator electronic load box 6 couplings to be calibrated respectively;
Rapid data collection device 3, comprise a plurality of data acquisition ports, the corresponding passage of each data acquisition port, during detection, select any two passages wherein, passage collection gained voltage signal after Hall closed loop current sensor I-V conversion, another passage gathers photovoltaic module 1 output voltage signal, and these two kinds of signals that gather are carried out to AD conversion, exports to computing machine 5;
Hall closed loop current sensor 4, by concentric cable, be connected with rapid data collection device 3 couplings, to this solar simulator electronic load box on-line calibration device, provide testing current, the current signal from photovoltaic module 1 of adopting is carried out to I-V conversion, and the voltage signal obtaining after conversion is exported to some passages of rapid data collection device 3 by concentric cable;
Computing machine 5, adopts USB port to be connected to rapid data collection device 3 and Hall closed loop current sensor 4, shows, for Hall closed loop current sensor 4 provides working power to being received from the signal of rapid data collection device 3 with data and curves.
In such scheme, in described Y-type three way type connector 2, binary channels interface comprises first passage interface a and second channel interface b, first passage interface a docks with solar simulator electronic load box 6 couplings to be calibrated, and second channel interface b is connected with a certain passage coupling of rapid data collection device 3 by concentric cable; Single channel interface is third channel interface c, docks with the lead-in wire Interface Matching of photovoltaic module 1.
In such scheme, described rapid data collection device 3 process before collection signal is demarcated.
In such scheme, the sensitivity KH of described Hall closed loop current sensor 4 is through demarcating, and sensitivity KH equals output voltage and input current ratio.
In such scheme, between described Hall closed loop current sensor 4 and rapid data collection device 3, adopt concentric cable to be connected, all there is a joint at the two ends of this concentric cable.
In such scheme, a USB port in described computing machine 5 is connected with Hall closed loop current sensor 4 power ports, for it provides working power.
In such scheme, a USB port in described computing machine 5 is connected with rapid data collection device 3, to being received from the signal of rapid data collection device 3, with data and curves, shows.
In such scheme, it is the signal that rapid data collection device 3 gathers that this solar simulator electronic load box on-line calibration device detects gained signal, a signal is gained voltage signal after Hall closed loop current sensor I-V conversion, another signal is the voltage signal of photovoltaic module 1 output, these two signals are exported to computing machine 5 after rapid data collection device 3 carries out AD conversion, by computing machine 5, show data and curves.
(3) beneficial effect
From technique scheme, can find out, the present invention has following beneficial effect:
1, solar simulator electronic load box on-line calibration device provided by the invention, adopt binary channels or multi-channel signal acquiring, when can realize solar simulator electronic load tank current, voltage, power measurement accuracy, calibration, has solved the technological difficulties of calibrating solar simulator electronic load box under transient condition.
2, solar simulator electronic load box on-line calibration device provided by the invention, can realize the on-line calibration of solar simulator electronic load box accuracy of measurement, greatly reduce calibration cycle, do not affected the practical application of solar simulator, do not affected the practical application of photovoltaic enterprise.
3, solar simulator electronic load box on-line calibration device provided by the invention, can realize the calibration that solar simulator electronic load box is measured IV curve.
4, solar simulator electronic load box on-line calibration device provided by the invention, calibrates based under transient mode, with solar simulator electronic load box practical application term harmonization.
5, solar simulator electronic load box on-line calibration device provided by the invention, simple in structure, is easy to carry and installs, can fine Site Detection and the metering demand that meets photovoltaic enterprise and testing agency.
6, solar simulator electronic load box on-line calibration device provided by the invention, to transient state and stable state solar simulator, comprises component tester, solar cell piece separator etc., all applicable.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, result of the present invention and feature are described in further detail, wherein:
Fig. 1 is the schematic diagram according to the solar simulator electronic load box on-line calibration device of the embodiment of the present invention.
Fig. 2 utilizes the electronic load box of solar simulator shown in Fig. 1 on-line calibration device to record electric current, voltage, power relation over time.
Fig. 3 utilizes the electronic load box of solar simulator shown in Fig. 1 on-line calibration device to record calibration IV curve.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
Refer to shown in Fig. 1, Fig. 1 is the schematic diagram according to the solar simulator electronic load box on-line calibration device of the embodiment of the present invention, accuracy of measurement for the electric current of on-line calibration solar simulator electronic load box 6, voltage, power, this device comprises photovoltaic module 1, Y-type three way type connector 2, rapid data collection device 3, Hall closed loop current sensor 4 and computing machine 5, wherein:
Photovoltaic module 1, consists of with array format a plurality of solar cell pieces, positive towards solar simulator light source, for this solar simulator electronic load box on-line calibration device provides voltage and current signal source; In actual applications, can choose magnitude of voltage or the current value that this photovoltaic module provides according to the testing range of electronic load box to be measured 6.
Y-type three way type connector 2, adopts unshielded cable to form, and one end is binary channels interface, and the other end is single channel interface, and photovoltaic module 1 is docked with rapid data collection device 3 and solar simulator electronic load box 6 couplings to be calibrated respectively; Wherein, binary channels interface comprises first passage interface a and second channel interface b, first passage interface a docks with solar simulator electronic load box 6 couplings to be calibrated, and second channel interface b is connected with a certain passage coupling of rapid data collection device 3 by concentric cable; Single channel interface is third channel interface c, docks with the lead-in wire Interface Matching of photovoltaic module 1.In actual applications, in this solar simulator electronic load box on-line calibration device, the number of Y-type three way type connector can be one, also can be for a plurality of, and the number of the connector of Y-type three way type shown in Fig. 1 is two.
Rapid data collection device 3, this data acquisition unit process before collection signal is demarcated, comprise a plurality of data acquisition ports, the corresponding passage of each data acquisition port, during detection, select any two passages wherein, passage collection gained voltage signal after Hall closed loop current sensor I-V conversion, another passage gathers photovoltaic module 1 output voltage signal; Above-mentioned two kinds of signals of 3 pairs of collections of this rapid data collection device carry out AD conversion, export to computing machine 5, by computing machine 5, show data and curves.
Hall closed loop current sensor 4, by concentric cable, be connected with rapid data collection device 3 couplings, to this solar simulator electronic load box on-line calibration device, provide testing current, the current signal from photovoltaic module 1 of adopting is carried out to I-V conversion, and the voltage signal obtaining after conversion is exported to a certain passage of rapid data collection device 3 by concentric cable.The sensitivity KH of this Hall closed loop current sensor is through demarcating, and sensitivity KH equals output voltage and input current ratio.Between described Hall closed loop current sensor 4 and rapid data collection device 3, adopt concentric cable to be connected, all there is a joint at the two ends of this concentric cable.
Computing machine 5, adopts USB port to be connected to rapid data collection device 3 and Hall closed loop current sensor 4, and one of them USB port is connected with Hall closed loop current sensor 4 power ports, for it provides working power; A USB port is connected with rapid data collection device 3, to being received from the signal of rapid data collection device 3, with data and curves, shows.
It is the signal that rapid data collection device 3 gathers that this solar simulator electronic load box on-line calibration device detects gained signal, a signal is gained voltage signal after Hall closed loop current sensor I-V conversion, another signal is the voltage signal of photovoltaic module 1 output, these two signals are exported to computing machine 5 after rapid data collection device 3 carries out AD conversion, by computing machine 5, show data and curves.
In the set-up procedure detecting, according to solar simulator electronic load box calibration range, select suitable photovoltaic module as electric current and the voltage signal source of solar simulator electronic load box and measuring apparatus, after its temperature stabilization, be placed in test surfaces, positive over against solar simulator light source.Record Hall closed loop current sensor output zero-point voltage value V0.By Y-type three way type connector wherein one through Hall closed loop current sensor perforation punching circular hole, for the measurement of this solar simulator electronic load box on-line calibration device current signal.
Photovoltaic module 1 is carried out to irradiation, utilize solar simulator electronic load box to measure its IV characteristic, comprise voltage, electric current curve over time, utilize the 3 sampled signal outputs of rapid data collection device simultaneously, record photovoltaic module 1 output voltage V and Hall current sensor secondary output voltage V 1 curve over time.Formula electric current I=(V1-V0)/KH and power P=VI are embedded in to rapid data collection device 3 software handling procedures, carry out computing and export accordingly result.Obtain photovoltaic module 1 output current (the former limit of Hall current sensor input current) I, output voltage V, the output power P change curve with the sampling time.Sample same time point place solar simulator electronic load box measurement electric current, voltage, power and this solar simulator electronic load box on-line calibration device electric current, voltage, power measurement values and compare, obtain the calibration result under this range.By sampling different time points (corresponding different electric currents, voltage, power range), realize the multirange calibration that solar simulator electronic load box is measured electric current, voltage, power accuracy.
Consider the situation of practical application, open-circuit voltage (Voc) (output current is the magnitude of voltage of 0 o'clock), short-circuit current (Isc) (output voltage is the current value of 0 o'clock), peak power output (Pm) and corresponding magnitude of voltage (Vm), current value (Im) thereof are to evaluate the most key photoelectric parameter of photovoltaic module performance, therefore the calibration of general solar simulator electronic load box accuracy of measurement is only for above 5 parameters.Preferably, repeat 5 tests, average as final calibration result.
Test case
Be to adopt solar simulator electronic load box on-line calibration device provided by the invention as follows, Dui Mou photovoltaic enterprise production test transient state solar simulator electronic load box voltage, electric current, power measurement accuracy used calibrated.
By demarcation, obtain Hall current sensor sensitivity KH=0.200175V/A.With rapid data collection device, measure Hall closed loop current sensor zero point voltage V0=2.507V.Choose nominal power Pm=230W, short-circuit current Isc=8.4A, the monocrystalline silicon photovoltaic module of open-circuit voltage Voc=37.0V is as voltage, current signal source, after itself and surrounding environment heat exchange temperature are stable, be placed in test surfaces, positive in the face of simulator light source.According to accompanying drawing 1, connect each service wire, trigger solar simulator pulse flash, utilize solar simulator electronic load box and this solar simulator electronic load box on-line calibration device to gather photovoltaic module output IV characteristic simultaneously.Record solar simulator electronic load box records open-circuit voltage Vocm, short-circuit current Iscm, peak power output Pmm and corresponding magnitude of voltage Vmm, current value I mm thereof.Utilize the 3 sampled signal outputs of rapid data collection device, record photovoltaic module output voltage V c and Hall current sensor secondary output voltage V 1 curve over time.Formula electric current I c=(V1-V0)/KH and power P c=VcIc are embedded in to rapid data collection device 3 software handling procedures, carry out computing and export accordingly result, obtain photovoltaic module output current Ic, output voltage V c, output power Pc with the change curve in sampling time, as shown in Figure 2.Take Vc as horizontal ordinate, and it is ordinate mapping that each same time is put corresponding Ic, Pc, obtains calibrated IV family curve, as shown in Figure 3.While getting Vc=0, corresponding Ic is short-circuit current calibration value Iscc, and while getting Ic=0, corresponding Vc is open-circuit voltage calibration value Vocc, and the maximal value of getting Pc is peak power calibration value Pmc, and corresponding voltage, electric current are respectively Vmc, Imc.
Repeat above test process 5 times, calculate respectively Vocm, Iscm, Pmm, Imm, Vmm, Vocc, Iscc, Pmc, Imc, the mean value of Vmc, and then obtain open-circuit voltage modifying factor (Vocc/Vocm), short-circuit current modifying factor (Iscc/Iscm), peak power modifying factor (Pmc/Pmm), peak power corresponding current modifying factor (Imc/Imm), the calibration result of peak power corresponding voltage modifying factor (Vmc/Vmm), as shown in table 1, table 1 is the calibration result of utilizing the electronic load box of solar simulator shown in Fig. 1 on-line calibration device calibration solar simulator electronic load box accuracy of measurement.
Table 1
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a solar simulator electronic load box on-line calibration device, it is characterized in that, this device comprises photovoltaic module (1), Y-type three way type connector (2), rapid data collection device (3), Hall closed loop current sensor (4) and computing machine (5), wherein:
Photovoltaic module (1), consists of with array format a plurality of solar cell pieces, positive towards solar simulator light source, for this solar simulator electronic load box on-line calibration device provides voltage and current signal source;
Y-type three way type connector (2), employing unshielded cable forms, one end is binary channels interface, and the other end is single channel interface, and photovoltaic module (1) is docked with rapid data collection device (3) and solar simulator electronic load box (6) to be calibrated coupling respectively;
Rapid data collection device (3), comprise a plurality of data acquisition ports, the corresponding passage of each data acquisition port, during detection, select any two passages wherein, passage collection gained voltage signal after Hall closed loop current sensor I-V conversion, another passage gathers photovoltaic module (1) output voltage signal, and these two kinds of signals that gather are carried out to AD conversion, exports to computing machine (5);
Hall closed loop current sensor (4), by concentric cable, be connected with rapid data collection device (3) coupling, to this solar simulator electronic load box on-line calibration device, provide testing current, the current signal from photovoltaic module (1) of adopting is carried out to I-V conversion, and the voltage signal obtaining after conversion is exported to some passages of rapid data collection device (3) by concentric cable;
Computing machine (5), adopt USB port to be connected to rapid data collection device (3) and Hall closed loop current sensor (4), to being received from the signal of rapid data collection device (3), with data and curves, show, for Hall closed loop current sensor (4) provides working power.
2. solar simulator electronic load box on-line calibration device according to claim 1, it is characterized in that, in described Y-type three way type connector (2), binary channels interface comprises first passage interface a and second channel interface b, first passage interface a docks with solar simulator electronic load box (6) coupling to be calibrated, and second channel interface b is connected with a certain passage coupling of rapid data collection device (3) by concentric cable; Single channel interface is third channel interface c, docks with the lead-in wire Interface Matching of photovoltaic module (1).
3. solar simulator electronic load box on-line calibration device according to claim 1, is characterized in that, described rapid data collection device (3) process before collection signal is demarcated.
4. solar simulator electronic load box on-line calibration device according to claim 1, is characterized in that, the sensitivity KH of described Hall closed loop current sensor (4) is through demarcating, and sensitivity KH equals output voltage and input current ratio.
5. solar simulator electronic load box on-line calibration device according to claim 1, it is characterized in that, between described Hall closed loop current sensor (4) and rapid data collection device (3), adopt concentric cable to be connected, all there is a joint at the two ends of this concentric cable.
6. solar simulator electronic load box on-line calibration device according to claim 1, is characterized in that, a USB port in described computing machine (5) is connected with Hall closed loop current sensor (4) power port, for it provides working power.
7. solar simulator electronic load box on-line calibration device according to claim 1, it is characterized in that, a USB port in described computing machine (5) is connected with rapid data collection device (3), to being received from the signal of rapid data collection device (3), with data and curves, shows.
8. solar simulator electronic load box on-line calibration device according to claim 1, it is characterized in that, it is the signal that rapid data collection device (3) gathers that this solar simulator electronic load box on-line calibration device detects gained signal, a signal is gained voltage signal after Hall closed loop current sensor I-V conversion, another signal is the voltage signal of photovoltaic module (1) output, these two signals are exported to computing machine (5) after rapid data collection device (3) carries out AD conversion, by computing machine (5), show data and curves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410259383.4A CN104076313A (en) | 2014-06-12 | 2014-06-12 | Online calibration device for solar simulator electronic load case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410259383.4A CN104076313A (en) | 2014-06-12 | 2014-06-12 | Online calibration device for solar simulator electronic load case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104076313A true CN104076313A (en) | 2014-10-01 |
Family
ID=51597700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410259383.4A Pending CN104076313A (en) | 2014-06-12 | 2014-06-12 | Online calibration device for solar simulator electronic load case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104076313A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107219800A (en) * | 2017-06-30 | 2017-09-29 | 安徽大恒能源科技有限公司 | A kind of photovoltaic module monitoring product automatic configuration system and method |
| CN110868156A (en) * | 2019-12-20 | 2020-03-06 | 青海黄河上游水电开发有限责任公司光伏产业技术分公司 | Method for measuring power of high-efficiency solar module in sections |
| CN115373321A (en) * | 2022-09-14 | 2022-11-22 | 中国人民解放军96963部队 | Multi-path star simulator calibrating device |
-
2014
- 2014-06-12 CN CN201410259383.4A patent/CN104076313A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107219800A (en) * | 2017-06-30 | 2017-09-29 | 安徽大恒能源科技有限公司 | A kind of photovoltaic module monitoring product automatic configuration system and method |
| CN110868156A (en) * | 2019-12-20 | 2020-03-06 | 青海黄河上游水电开发有限责任公司光伏产业技术分公司 | Method for measuring power of high-efficiency solar module in sections |
| CN115373321A (en) * | 2022-09-14 | 2022-11-22 | 中国人民解放军96963部队 | Multi-path star simulator calibrating device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104330765B (en) | Electric energy meter field calibrating installation based on satellite navigation system | |
| CN202815166U (en) | Detection device of solar energy photovoltaic array I-V characteristic | |
| CN102288891A (en) | Method for extracting parameters of solar cell | |
| CN105116369A (en) | Radio frequency radiation disturbance rejection degree test apparatus and system | |
| CN102385937A (en) | Leakage rate detection method and system for containment of nuclear power station | |
| CN203069774U (en) | System for evaluating accuracy of digital electric energy meter | |
| CN102455214A (en) | Device for detecting uniformity and stability of irradiation of solar simulator | |
| CN104113281A (en) | Novel multi-channel solar cell module test system and double intelligent scan method | |
| CN112129415B (en) | Transformer substation infrared temperature measurement device and method based on temperature dynamic calibration | |
| CN103308841B (en) | The method of a kind of demarcation four main grid taps | |
| Caruso et al. | A low-cost, real-time monitoring system for PV plants based on ATmega 328P-PU microcontroller | |
| CN204788900U (en) | Solar simulator irradiance, irradiation homogeneity and stable detection device | |
| CN110031792A (en) | Consider the Basic Error of Energy Meter test device and method of temperature and curent change | |
| CN104579169B (en) | Light intensity calibration method used for solar battery piece testing device | |
| CN104076313A (en) | Online calibration device for solar simulator electronic load case | |
| CN104201988A (en) | Test method for electric performance of solar cell module | |
| CN204228901U (en) | Local discharge detection device | |
| CN103558571A (en) | Calibration system of electronic transformer and merging unit | |
| CN201859011U (en) | Apparatus for detecting irradiation homogeneity and stability of solar simulator | |
| CN204065389U (en) | Solar simulator electronic load box on-line calibration device | |
| CN106199486A (en) | A kind of measurement system of power meter temperature impact test | |
| CN103353576B (en) | Based on the photovoltaic module energy output method of measurement of volt-ampere characteristic | |
| CN204028346U (en) | A kind of electric energy meter Auto-Test System | |
| CN203551762U (en) | Electronic instrument transformer and merging unit verification system | |
| CN107543574B (en) | Automatic detector for high-temperature aging test of airborne sensor and operation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141001 |
|
| WD01 | Invention patent application deemed withdrawn after publication |