CN205647433U - Photovoltaic module cluster current -voltage tester - Google Patents
Photovoltaic module cluster current -voltage tester Download PDFInfo
- Publication number
- CN205647433U CN205647433U CN201620399038.5U CN201620399038U CN205647433U CN 205647433 U CN205647433 U CN 205647433U CN 201620399038 U CN201620399038 U CN 201620399038U CN 205647433 U CN205647433 U CN 205647433U
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- China
- Prior art keywords
- photovoltaic module
- switch
- voltmeter
- parallel
- air switch
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- Expired - Fee Related
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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)
- Testing Of Individual Semiconductor Devices (AREA)
Abstract
The utility model discloses photovoltaic module cluster current -voltage tester relates to a measuring instrument, including voltmeter, ampere meter, resistance restraint, air switch K1, air switch K2, switch K3 and switch K4, voltmeter and photovoltaic module connection in series -parallel, air switch K1 establish ties voltmeter and photovoltaic module cluster the institute among the parallel circuit, switch K3 connects in parallel at the voltmeter both ends, the ampere meter restraints simultaneously with resistance and the photovoltaic module cluster is established ties mutually, air switch K2 establish ties ampere meter, resistance restraint and photovoltaic module go here and there the institute among the current circuit, switch K4 connects in parallel at the ampere meter both ends. The utility model has the advantages of light practicality, low cost, the quick accuracy of test.
Description
Technical field
This utility model relates to a kind of measuring instrument, particularly to a kind of current/voltage tester.
Background technology
Photovoltaic generation is a kind of cleaning, efficient novel energy mode.It utilizes photovoltaic module, the distributed generation system converted solar energy into electrical energy.Country is vigorously supporting the sector development at present, and a collection of national, provincial level key project is also being launched successively.
In photovoltaic generation project construction, it is one of principal Item that photovoltaic module is installed.According to photo-voltaic power generation station job specfication (GB 50794-2012), photovoltaic module carries out tackling the open-circuit voltage of photovoltaic module string after group series winding connects and short circuit current is tested.Conventional measuring equipment is that circuit tester is measured, and uses which to measure constantly, often causes the damage of circuit tester because of reasons such as electric current instability and triggering electric arcs, and the poor stability therefore measured with circuit tester, consuming rate is high, measures cost big；And use pincerlike meter to measure, easily cause precision inadequate because electric current is too small again.The most safe and reliable and carry out photovoltaic module performance detection accurately, bigizationner ensure that photovoltaic module generating efficiency is then the problem needing to consider and solve.
Summary of the invention
The purpose of this utility model be to provide a kind of light practicality, with low cost, test photovoltaic module string current/voltage tester fast and accurately, it is simple to open-circuit voltage and short circuit current to photovoltaic module string are quickly measured.
This utility model the technical scheme is that a kind of photovoltaic module string current/voltage tester for achieving the above object, including voltmeter, ammeter, resistance bundle, air switch K1, air switch K2, switch K3And switch K4, voltmeter and photovoltaic module connection in series-parallel, air switch K1It is connected in voltmeter and photovoltaic module string institute parallel circuit, switchs K3Being connected in parallel on voltmeter two ends, ammeter is in series with photovoltaic module string with resistance bundle simultaneously, air switch K2It is connected in ammeter, resistance bundle and photovoltaic module string institute series circuit, switchs K4It is connected in parallel on ammeter two ends.
This utility model photovoltaic module string current/voltage tester has the advantages that
1, instrumentation is simple, low cost: this instrument material and accessory are simple, and capital equipment is one piece of ammeter (0-10A), voltmeter (0-999V) a piece, copper conductor (1.5mm2) 3 meters, air switch (C65H-DC C63A) 2, resistor rod one group, photovoltaic component terminal box and photovoltaic cable 1 overlap, and electrical adhesive tape is some；
2, measuring safety high: compared with tradition circuit tester test, this utility model installs two air switches, the opening and closing of circuit in time testing will not produce electric arc, measure process electric current steady, to survey crew and equipment not damaged；
3, measurement data is accurate, calculate simple: the ammeter used by this instrument, voltmeter are demarcates qualified measuring instruments, load resistance it is known that the most in the measurements instrument video data accurate, open-circuit voltage and short circuit current numerical value can be calculated by simple physical equation；
4, measuring low cost: according to statistics, carry out photovoltaic module measurement with circuit tester, accumulative about 120KW capacity will damage one piece of circuit tester, and use the instrument of the present invention to be continuously finished about 90MWp capacity, and instrument is not damaged.
With embodiment, this utility model photovoltaic module string current/voltage tester is further described below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of this utility model photovoltaic module string current/voltage tester；
Drawing reference numeral illustrates: 1-photovoltaic module string, 2-air switch K1, 3-switchs K4, 4-switchs K3, 5-air switch K2, 6-voltmeter, 7-ammeter, 8-resistance bundle.
Detailed description of the invention
As it is shown in figure 1, this utility model photovoltaic module string current/voltage tester, including voltmeter 6, ammeter 7, resistance bundle 8, air switch K12, air switch K25, switch K34 and switch K43, voltmeter 6 is in parallel with photovoltaic module string 1, air switch K12 are connected in voltmeter 6 and 1 parallel circuit of photovoltaic module string, switch K34 are connected in parallel on voltmeter 6 two ends, and ammeter 7 is in series with photovoltaic module string 1 with resistance bundle 8 simultaneously, air switch K25 are connected in ammeter 7, resistance bundle 8 and 1 series circuit of photovoltaic module string, switch K43 are connected in parallel on ammeter 7 two ends.Above-mentioned each element is attached by copper conductor.
Measure open-circuit voltage and the short circuit current of photovoltaic module string, available this utility model photovoltaic module string current/voltage tester independent measurement photovoltaic module string 1 open-circuit voltage and operating current I work, then tried to achieve the short circuit current of photovoltaic module string by calculating；Photovoltaic module string 1 open-circuit voltage and operating current I work can also be measured simultaneously, then tried to achieve the short circuit current I work of photovoltaic module string by calculating.When independent measurement photovoltaic module string 1 open-circuit voltage, close air switch K12, switch K34, disconnect air switch K25, switch K43, read voltage table 6 number of degrees are U, and because between equipment, connecting line is shorter, cable resistance is negligible, and therefore the magnitude of voltage U of voltmeter 6 display is photovoltaic module string 1 open-circuit voltage.When independent measurement photovoltaic module string 1 operating current I man-hour, close air switch K12, air switch K25, switch K43, disconnect switch K34, from ammeter 7 read work electric current I work.When measuring photovoltaic module string 1 open-circuit voltage and operating current I man-hour simultaneously, close air switch K12, switch K25, switch K43, switch K34, read voltage table 6 number of degrees are U and ammeter 7 operating current I work, and the short circuit current I finally calculating photovoltaic module string is short.Known resistance bundle 8 resistance value is R, calculate photovoltaic module string 1 internal resistance r=U/I work-R, calculate again short circuit current I short=U/r=U/ (U/I work-R)=UI work/(U-RI work), i.e. complete the open-circuit voltage to photovoltaic module string 1 and short circuit current tested.
Above example is only preferred embodiment of the present utility model; structure of the present utility model is not limited to the form that above-described embodiment is enumerated; all made within spirit of the present utility model and principle any amendment, equivalent etc., within should be included in protection domain of the present utility model.
Claims (1)
1. a photovoltaic module string current/voltage tester, it is characterised in that include voltmeter (6), ammeter (7), resistance bundle (8), air switch K1(2), air switch K2(5), switch K3(4) and switch K4(3), voltmeter (6) is in parallel with photovoltaic module string (1), air switch K1(2) it is connected in voltmeter (6) and photovoltaic module string (1) institute parallel circuit, switchs K3(4) being connected in parallel on voltmeter (6) two ends, ammeter (7) is in series with photovoltaic module string (1) with resistance bundle (8) simultaneously, air switch K2(5) it is connected in ammeter (7), resistance bundle (8) and photovoltaic module string (1) institute series circuit, switchs K4(3) ammeter (7) two ends it are connected in parallel on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620399038.5U CN205647433U (en) | 2016-05-05 | 2016-05-05 | Photovoltaic module cluster current -voltage tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620399038.5U CN205647433U (en) | 2016-05-05 | 2016-05-05 | Photovoltaic module cluster current -voltage tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205647433U true CN205647433U (en) | 2016-10-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620399038.5U Expired - Fee Related CN205647433U (en) | 2016-05-05 | 2016-05-05 | Photovoltaic module cluster current -voltage tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205647433U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333495A (en) * | 2018-03-01 | 2018-07-27 | 国家电投集团西安太阳能电力有限公司 | A kind of bypass diode working state detecting method of photovoltaic component terminal box |
-
2016
- 2016-05-05 CN CN201620399038.5U patent/CN205647433U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333495A (en) * | 2018-03-01 | 2018-07-27 | 国家电投集团西安太阳能电力有限公司 | A kind of bypass diode working state detecting method of photovoltaic component terminal box |
| CN108333495B (en) * | 2018-03-01 | 2020-11-03 | 国家电投集团西安太阳能电力有限公司 | Method for detecting working state of bypass diode of photovoltaic module junction box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |