CN205647433U - Photovoltaic module cluster current -voltage tester - Google Patents

Photovoltaic module cluster current -voltage tester Download PDF

Info

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
Authority
CN
China
Prior art keywords
photovoltaic module
switch
voltmeter
parallel
air switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201620399038.5U
Other languages
Chinese (zh)
Inventor
姜斌
林秋蕙
葛仝
黎钟辉
潘东美
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangxi Construction No2 Building & Installation Co Ltd
Original Assignee
Guangxi Construction No2 Building & Installation Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangxi Construction No2 Building & Installation Co Ltd filed Critical Guangxi Construction No2 Building & Installation Co Ltd
Priority to CN201620399038.5U priority Critical patent/CN205647433U/en
Application granted granted Critical
Publication of CN205647433U publication Critical patent/CN205647433U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

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

Photovoltaic module string current/voltage tester
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.
CN201620399038.5U 2016-05-05 2016-05-05 Photovoltaic module cluster current -voltage tester Active CN205647433U (en)

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

ID=57049045

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620399038.5U Active 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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN201203438Y (en) Solar photovoltaic set tester
CN101706531B (en) Method for testing insulation performance of insulator
CN102072999A (en) Connection testing device of electric energy metering device and using method thereof
CN205647433U (en) Photovoltaic module cluster current -voltage tester
CN204882746U (en) Electric automobile alternating current -direct current stake examination conversion equipment that charges
CN202939297U (en) Verification system for ground resistance tester
CN104698253A (en) Determination method of lithium battery open circuit voltage
CN105093011B (en) A kind of electric vehicle alternating current-direct current charging pile calibrating conversion equipment
CN201955466U (en) Multifunctional electric apparatus parameter test instrument
CN102253346B (en) Method and device for automatically testing battery charging
CN201837694U (en) Wiring tester for electric energy metering device
CN103323764A (en) Silicon PIN semiconductor detector leak current detecting device and detecting method thereof
CN201757762U (en) Circuit breaker tripping and closing voltage tester
CN203324465U (en) Device using voltage method to measure ratio of transformation of current transformer
CN105527468A (en) Comprehensive test transformation device for high voltage switch cabinet
CN202929193U (en) Integrated error verification system for electric energy meter
CN201732123U (en) Constant-flow type earthing resistance tester
CN105699832A (en) Cable checking and grouping method
CN204439820U (en) Once-through type lightning arrester on-Line Monitor Device detector
Koliushko et al. Testers for Measuring the Electrical Characteristics of Grounding Systems by IEEE Standards
Zheng Fault location and type identification on transmission line using a novel traveling wave method
CN203949963U (en) A kind of two pincers digit phase volt ampere meter
CN202453476U (en) Battery sorting device capable of automatically calibrating measurement error of two-wire battery clamp
Megantoro et al. The Analysis of Comparison Electrical Power Measurement on LED Lamps
CN106771948A (en) A kind of metal-oxide-semiconductor cut-in voltage measurement apparatus

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant