CN103529302A - Performance test circuit and test method for photovoltaic module - Google Patents
Performance test circuit and test method for photovoltaic module Download PDFInfo
- Publication number
- CN103529302A CN103529302A CN201310439670.9A CN201310439670A CN103529302A CN 103529302 A CN103529302 A CN 103529302A CN 201310439670 A CN201310439670 A CN 201310439670A CN 103529302 A CN103529302 A CN 103529302A
- Authority
- CN
- China
- Prior art keywords
- resistance
- photovoltaic module
- performance test
- series
- test circuit
- 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.)
- Granted
Links
Images
Abstract
The invention discloses a performance test circuit and a test method for a photovoltaic module. The circuit comprises two coupling ends, wherein the two coupling ends are used for connecting with the anode and the cathode of the photovoltaic module; a resistance bridge is connected in series between the two coupling ends; the resistance bridge comprises an adjustable resistor R, two terminals and two regulation resistors R1 and R2, wherein the two terminals are connected into an equivalent insulation resistor; a first series branch consisting of the adjustable resistor R and the first regulation resistor R1 is connected with a second series branch consisting of the two terminals used for connecting into the equivalent insulation resistor and the second regulation resistor R2 in parallel; and an amperemeter is connected between the series points of the two series branches. According to the performance test circuit and the test method for the photovoltaic module, which are disclosed by the invention, the insulation resistance of the photovoltaic module is precisely measured by a resistance bridge circuit. The performance test circuit has the advantages of simple structure and convenience in implementation, the series internal resistor and the insulation resistance of the photovoltaic module can be quickly and accurately measured in field, the quality and the insulativity of the photovoltaic module can be evaluated, and the parameter test under the practical illumination is realized.
Description
Technical field
The invention belongs to industrial measurement and control technical field, be specifically related to a kind of test circuit and method of testing of fast detecting photovoltaic module performance.
Background technology
Along with increasingly sharpening of energy crisis and environmental problem, the application of solar photo-voltaic power generation station is increasingly extensive.At present, heliotechnics is applied in all trades and professions more and more widely, but when utilizing sun power, must test the performance of photovoltaic module (being mainly insulation resistance), because once in system insulation fault, be easy to occur security incident, thereby cause the harm of the person, property.
According to as follows about the program requirement of the 10.3.4 in 10.3 the Insulation Test of " whether current carrying part and the insulation between module frame or outside measured in photovoltaic module be good " in international standard IEC61646 " ground membrane photovoltaic component---design is identified and sizing ": will receive the positive pole of the D.C. isolation tester of current limiting device after the short circuit of assembly extension line, the metal that assembly is exposed is partly received the negative pole of insulation tester, if assembly is Rimless, or frame is poor conductor, the periphery of assembly and the back side are wrapped up with conductive foil, if assembly does not contain glass outer layer, before assembly, with conductive foil, wrap up, again conductive foil is connected to the negative pole of insulation tester.But in practical operation, for Rimless assembly (as the photovoltaic module of internal and external layers of glass encapsulation) and containing assembly (as the flexible thin-film battery assembly) Insulation Test of glass outer, conductive foil for assembly edge is not pasted to parcel, the method operating difficulties, the conductive foil of pasting can not reuse.
Now the principle of solar electrical energy generation with and performance parameter detect and become the ABC that tradesman must grasp, but using at present more is large-scale detecting instrument, equipment volume and weight are huge, installation and transportation are inconvenient, and expensive, can not to the quality of photovoltaic module, carry out fast detecting at the scene.
Chinese Patent Application No. 201210367758.X discloses the good and bad fast detector of a kind of photovoltaic module power, and an external resistance value can accurate adjustment and external series resistance that can pin-point reading; And external series resistance adjustment is guaranteed to the establishment of linear equation.Although this detector is simple in structure, this circuit can only be realized the measurement to photovoltaic module series resistance and power, can not detect its insulation resistance.
Chinese Patent Application No. 201210302192.2 discloses a kind of insulated test device and method of solar photovoltaic assembly, and this device comprises the cavity body structure of conduction in an external insulation, packed spool and the electrode contact of bleeding of electro-insulating rubber; The inside surface of proving installation is coated with conductive metal film, or is pasted with conductive rubber, realizes internally conduction.When detecting, photovoltaic module is put into insulation cavity, after the sealing of insulation cavity, vacuumizes, and the coated photovoltaic module of conductive layer of insulation cavity inner surface, detects insulating resistance value by resistance meter.The complicated structure of this device, also will vacuumize insulation cavity in use, therefore, also needs optional equipment vaccum-pumping equipment, uses comparatively trouble, is not suitable for fast detecting; In addition, this device can not detect the series resistance of photovoltaic module.
Summary of the invention
The performance test circuit that the object of this invention is to provide a kind of photovoltaic module, is used to solve existing testing apparatus the problem that trouble cannot fast detecting, and a kind of method of testing of utilizing this test circuit is provided simultaneously.
In order to realize above object, the technical scheme that the performance test circuit of institute of the present invention photovoltaic module adopts is: comprise two links for being connected with photovoltaic module both positive and negative polarity, between described two links, be serially connected with a resistance bridge, described resistance bridge comprises adjustable resistance R, for accessing two terminals and two regulating resistance R1 of equivalent insulation resistance, R2, the first series arm that adjustable resistance R forms with the first regulating resistance R1 and in parallel with the second series arm of the second regulating resistance R2 composition for accessing two terminals of equivalent insulation resistance, between the series connection point of described two series arms, be connected with a reometer.
One end of described two splicing ears is used for connecting photovoltaic module shell, and the other end is for being connected with ground.
Between the series connection point of described the first series arm and the first regulating resistance R1, string is provided with the first K switch 1, on the second regulating resistance R2, be parallel with second switch K2, between the splicing ear being connected with adjustable resistance R and the series connection point of the second series arm, string is provided with in the 3rd K switch 3, two series arms and is also parallel with a voltage table.
Described the first adjustable resistance is identical with the resistance of the second adjustable resistance.
The technical scheme that the performance test methods of institute of the present invention photovoltaic module adopts is: the method comprises the steps:
(1) treat photometry photovoltaic assembly and carry out illumination simulation, and make intensity of illumination reach setting value;
(2) first regulating resistance R1 and the second regulating resistance R2 are fixing given value, and adjusting adjustable resistance R, when current value shown in reometer is 0, obtains insulation resistance R3=R2*R/R1.
Treating photometry photovoltaic assembly carries out illumination simulation and adopts hernia lamp to irradiate after concave mirror reflected in parallel to the mode of photovoltaic module to be measured again.
Described the first regulating resistance R1 is identical with the second regulating resistance R2.The performance test circuit of photovoltaic module of the present invention and method of testing are utilized the insulation resistance of a resistance bridge circuit precise measuring photovoltaic assembly, simple in structure, implement convenient series resistance and the insulation resistance that can measure at the scene fast and accurately photovoltaic module, the quality of photovoltaic module and insulating property are evaluated, realized the parameter testing under actual light is shone.
In circuit, increase corresponding switch and voltage table, can measure the series resistance of photovoltaic module and short-circuit current, open circuit voltage, fill factor, curve factor and shunt resistance, the performance of overall understanding photovoltaic module, realizes the on-the-spot detection to photovoltaic module.
Accompanying drawing explanation
Fig. 1 is simulated solar irradiation schematic diagram;
Fig. 2 is the equivalent circuit diagram of performance test circuit first embodiment of photovoltaic module;
Fig. 3 is the equivalent circuit diagram of performance test circuit second embodiment of photovoltaic module;
Fig. 4 is photovoltaic module
with
be related to schematic diagram;
Fig. 5 is the I-V curve map of photovoltaic module.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention is described further.
Be illustrated in figure 1 the schematic diagram that simulated solar irradiation of the present invention carries out illumination, utilize hernia lamp 1 to irradiate after concave mirror 2, the reflected light of formation again reflected in parallel, to photovoltaic module to be measured, is treated photometry photovoltaic assembly and is carried out illumination simulation.
As shown in Figure 2, be the performance test circuit embodiment of photovoltaic module of the present invention, in figure, V
d, diode, R
shand R
sintegral body is equivalent to a photovoltaic module, wherein, and V
dfor the photovoltaic voltage that photovoltaic module to be measured produces under the illumination simulation of hernia lamp, I
dfor flowing through the electric current of diode, R
shfor the shunt resistance of photovoltaic module to be measured, R
sseries resistance for photovoltaic module to be measured.This test circuit comprises two links for being connected with photovoltaic module both positive and negative polarity, between two links, be serially connected with a resistance bridge, resistance bridge comprises adjustable resistance R, for accessing two terminals and two regulating resistance R1, the R2 of equivalent insulation resistance R3, the first series arm that adjustable resistance R forms with the first regulating resistance R1 and in parallel with the second series arm of the second regulating resistance R2 composition for accessing two terminals of equivalent insulation resistance, is connected with a reometer G between the series connection point of described two series arms.
Insulation resistance R3 is the specific character that photovoltaic module itself has, description be photovoltaic module metal shell and the resistance on ground.When by photovoltaic module access test circuit to be measured, one end of two terminals is used for connecting photovoltaic module shell, and the other end is for being connected with ground.
In order to use this test circuit, the series resistance of photovoltaic module is tested, foregoing circuit is further improved, as shown in Figure 3, between adjustable resistance R and the first regulating resistance R1, string is provided with the first K switch 1, on the second regulating resistance R2, be parallel with second switch K2, between the splicing ear being connected with adjustable resistance R and insulation resistance R3, string is provided with the 3rd K switch 3, and between described two splicing ears, also string is provided with a voltage table V.
For ease of calculating, in the present embodiment, the first adjustable resistance R1 is identical with the resistance of the second adjustable resistance R2.
The present invention also provides a kind of performance test methods of photovoltaic module, when measuring insulation resistance, comprises the steps:
(1) treat photometry photovoltaic assembly and carry out illumination simulation, and make intensity of illumination reach setting value: regulate the power of xenon lamp, reach standard intensity of illumination 1000W/m
2.
(2) first regulating resistance R1 and the second regulating resistance R2 are fixing given value, and adjusting adjustable resistance R, when the current value between adjustable resistance R and insulation resistance R3 is 0, can obtain insulation resistance R3=R2*R/R1.
The measuring principle of above-mentioned measuring method is as follows: stablizing under intensity of illumination closed K
1, K
3, disconnect K
2, according to Kirchhoff's current law (KCL) and Ohm law:
I
1＝I
2+I
I
4＝I
3+I (1)
V＝I
1R+I
2R
1
V＝I
3R
3+I
4R
2 (2)
By (1) and (2), obtained:
I
1(R+R
1)-IR
1＝I
3(R
3+R
2)+IR
2 (3)
R due to the present embodiment
1=R
2, regulate R, when I=0, I
1=I
3, R
3=R, thereby the insulation resistance R of precise measuring photovoltaic assembly
3.
In addition, the series resistance R that test circuit of the present invention can also be to photovoltaic module
smeasure, its measuring process is as follows: under illumination simulation intensity, and K
1, K
3disconnect K
2closure, regulates adjustable resistance R, and the indicating value of voltage table and reometer is respectively I, V, records a series of R, I, V data, according to whole circuit law of ohm:
V＝IR (4)
By (4) and (5), obtained
Reciprocal to above-mentioned Solving Equations:
As shown in Figure 4,
with
show as linear relationship, by curve, obtain V
d,
the series resistance R of each photovoltaic module to be measured relatively
s, R
snumerical value is less, and photovoltaic module quality is better.
In addition, according to a series of I that record and V data, the method by curve obtains I-V curve, as shown in Figure 5, can calculate short-circuit current, open circuit voltage, fill factor, curve factor, the shunt resistance of photovoltaic module, accurately describes the performance of photovoltaic module.The computation process of each parameter is as follows: when V=0, and I
scvalue be short-circuit current; When I=0, V
ocvalue be open circuit voltage; Fill factor, curve factor FF is measuring of solar cell quality (resistance in series and parallel resistance), is defined as actual peak power output divided by the output power of dreamboat.
wherein, I
mand V
mpeak power P
mtime voltage and current, I
sCand V
oCrespectively short-circuit current and open circuit voltage; Shunt resistance R
sh passes throughdifferential calculation obtains,
Above embodiment is the unrestricted technical method of the present invention in order to explanation only, although the present invention is had been described in detail with reference to above-described embodiment, those of ordinary skill in the art is to be understood that: the present invention is modified or is equal to replacement, and do not depart from any modification or partial replacement of the spirit and scope of the present invention, all should be encompassed in the middle of claim scope of the present invention.
Claims (7)
1. the performance test circuit of a photovoltaic module, it is characterized in that: comprise two links for being connected with photovoltaic module both positive and negative polarity, between described two links, be serially connected with a resistance bridge, described resistance bridge comprises adjustable resistance R, for accessing two terminals and two regulating resistance R1 of equivalent insulation resistance, R2, the first series arm that adjustable resistance R forms with the first regulating resistance R1 and in parallel with the second series arm of the second regulating resistance R2 composition for accessing two terminals of equivalent insulation resistance, between the series connection point of described two series arms, be connected with a reometer.
2. the performance test circuit of photovoltaic module according to claim 1, is characterized in that: one end of described two splicing ears is used for connecting photovoltaic module shell, and the other end is for being connected with ground.
3. the performance test circuit of photovoltaic module according to claim 2, it is characterized in that: between the series connection point of described the first series arm and the first regulating resistance R1, string is provided with the first K switch 1, on the second regulating resistance R2, be parallel with second switch K2, between the splicing ear being connected with adjustable resistance R and the series connection point of the second series arm, string is provided with in the 3rd K switch 3, two series arms and is also parallel with a voltage table.
4. according to the performance test circuit of the photovoltaic module described in claim 2 or 3, it is characterized in that: described the first adjustable resistance is identical with the resistance of the second adjustable resistance.
5. a performance test methods that utilizes the performance test circuit of photovoltaic module as claimed in claim 1, is characterized in that, comprises the steps:
(1) treat photometry photovoltaic assembly and carry out illumination simulation, and make intensity of illumination reach setting value;
(2) first regulating resistance R1 and the second regulating resistance R2 are fixing given value, and adjusting adjustable resistance R, when current value shown in reometer is 0, obtains insulation resistance R3=R2*R/R1.
6. the performance test methods of photovoltaic module according to claim 5, is characterized in that: treat photometry photovoltaic assembly and carry out illumination simulation and adopt hernia lamp to irradiate after concave mirror reflected in parallel to the mode of photovoltaic module to be measured again.
7. according to the performance test methods of the photovoltaic module described in claim 5 or 6, it is characterized in that: described the first regulating resistance R1 is identical with the second regulating resistance R2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310439670.9A CN103529302B (en) | 2013-09-24 | 2013-09-24 | The performance test circuit and method of testing of a kind of photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310439670.9A CN103529302B (en) | 2013-09-24 | 2013-09-24 | The performance test circuit and method of testing of a kind of photovoltaic module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103529302A true CN103529302A (en) | 2014-01-22 |
| CN103529302B CN103529302B (en) | 2017-12-12 |
Family
ID=49931470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310439670.9A Expired - Fee Related CN103529302B (en) | 2013-09-24 | 2013-09-24 | The performance test circuit and method of testing of a kind of photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103529302B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007319A (en) * | 2014-06-10 | 2014-08-27 | 湖北工业大学 | Method for measuring equivalent parallel-connection resistance value of multi-junction concentrating solar battery |
| CN108957112A (en) * | 2018-07-04 | 2018-12-07 | 南京中认南信检测技术有限公司 | Photovoltaic module current continuity monitor |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1465981A (en) * | 2002-06-29 | 2004-01-07 | 骆乃光 | Electric bridge for experiment |
| CN101603988A (en) * | 2008-06-12 | 2009-12-16 | 中茂电子(深圳)有限公司 | Series resistors inside solar energy battery measuring method and measuring system |
| US20100117671A1 (en) * | 2008-11-12 | 2010-05-13 | Optisolar, Inc. | Simulated mounting structure for testing electrical devices |
| CN102841256A (en) * | 2012-08-23 | 2012-12-26 | 深圳市创益科技发展有限公司 | Insulation test device and method of solar photovoltaic modules |
| CN102854395A (en) * | 2012-09-04 | 2013-01-02 | 阳光电源（上海）有限公司 | Circuit and method for detecting direct-current power ground insulation resistor |
| CN202870176U (en) * | 2012-10-09 | 2013-04-10 | 浙江埃菲生能源科技有限公司 | Direct-current grounding resistor detection device |
| CN202948043U (en) * | 2012-10-15 | 2013-05-22 | 山东轻工业学院 | Open type Wheatstone bridge experimental instrument |
| CN204008858U (en) * | 2013-09-24 | 2014-12-10 | 国家电网公司 | A kind of performance test circuit of photovoltaic module |
-
2013
- 2013-09-24 CN CN201310439670.9A patent/CN103529302B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1465981A (en) * | 2002-06-29 | 2004-01-07 | 骆乃光 | Electric bridge for experiment |
| CN101603988A (en) * | 2008-06-12 | 2009-12-16 | 中茂电子(深圳)有限公司 | Series resistors inside solar energy battery measuring method and measuring system |
| US20100117671A1 (en) * | 2008-11-12 | 2010-05-13 | Optisolar, Inc. | Simulated mounting structure for testing electrical devices |
| CN102841256A (en) * | 2012-08-23 | 2012-12-26 | 深圳市创益科技发展有限公司 | Insulation test device and method of solar photovoltaic modules |
| CN102854395A (en) * | 2012-09-04 | 2013-01-02 | 阳光电源（上海）有限公司 | Circuit and method for detecting direct-current power ground insulation resistor |
| CN202870176U (en) * | 2012-10-09 | 2013-04-10 | 浙江埃菲生能源科技有限公司 | Direct-current grounding resistor detection device |
| CN202948043U (en) * | 2012-10-15 | 2013-05-22 | 山东轻工业学院 | Open type Wheatstone bridge experimental instrument |
| CN204008858U (en) * | 2013-09-24 | 2014-12-10 | 国家电网公司 | A kind of performance test circuit of photovoltaic module |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007319A (en) * | 2014-06-10 | 2014-08-27 | 湖北工业大学 | Method for measuring equivalent parallel-connection resistance value of multi-junction concentrating solar battery |
| CN104007319B (en) * | 2014-06-10 | 2017-02-01 | 湖北工业大学 | Method for measuring equivalent parallel-connection resistance value of multi-junction concentrating solar battery |
| CN108957112A (en) * | 2018-07-04 | 2018-12-07 | 南京中认南信检测技术有限公司 | Photovoltaic module current continuity monitor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103529302B (en) | 2017-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202815166U (en) | Detection device of solar energy photovoltaic array I-V characteristic | |
| CN204008858U (en) | A kind of performance test circuit of photovoltaic module | |
| CN101706531A (en) | Method for testing insulation performance of insulator and device thereof | |
| Wagner | Peak-power and internal series resistance measurement under natural ambient conditions | |
| CN103234659A (en) | Online temperature measuring method for overhead wire | |
| CN105787235B (en) | A kind of photovoltaic cell Building of Simulation Model method and device | |
| CN103529302A (en) | Performance test circuit and test method for photovoltaic module | |
| CN104678175A (en) | Square-matrix insulation resistance detection system for photovoltaic power generation system | |
| CN202710712U (en) | I-V characteristic adjusting and sampling device of solar cell | |
| CN102759696A (en) | Device for adjusting and sampling I-V characteristics of solar battery | |
| CN102621393A (en) | Method for measuring resistance of glass substrate and cover plate in photovoltaic component | |
| Bardizza et al. | Metastability in performance measurements of perovskite PV devices: a systematic approach | |
| CN104579169A (en) | Light intensity calibration method used for solar battery piece testing device | |
| CN204044246U (en) | A kind of square formation insulation impedance detection system of photovoltaic generating system | |
| CN104242819A (en) | Method for predicting photovoltaic power generation on basis of electrical parameters of battery at two different temperatures | |
| Siahaan et al. | Analysis the effect of reflector (flat mirror, convex mirror, and concave mirror) on solar panel | |
| CN103353576B (en) | Based on the photovoltaic module energy output method of measurement of volt-ampere characteristic | |
| CN103744029B (en) | A kind of evaluation method based on internal resistance measurement cell residual capacity | |
| CN103197275B (en) | The calibration steps in light source irradiation direction | |
| CN103105574B (en) | Analytic method for extracting solar battery parameter | |
| CN103091616B (en) | New analytic method for extracting solar battery parameters | |
| CN206523579U (en) | Based on wireless radio-frequency lightning arrester resistance leakage current detection means | |
| CN105136288A (en) | Solar simulator irradiance real-time monitoring device under vacuum low-temperature condition and method thereof | |
| CN207896934U (en) | A kind of component generated energy contrast test device | |
| CN104181401A (en) | Testing device and testing method for light dark conductivity of HIT exclusive single-layer membrane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171212 |