CN219577009U - Photovoltaic group string fault testing device - Google Patents
Photovoltaic group string fault testing device Download PDFInfo
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- CN219577009U CN219577009U CN202320791430.4U CN202320791430U CN219577009U CN 219577009 U CN219577009 U CN 219577009U CN 202320791430 U CN202320791430 U CN 202320791430U CN 219577009 U CN219577009 U CN 219577009U
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- fault testing
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- 238000012360 testing method Methods 0.000 title claims abstract description 37
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 238000009413 insulation Methods 0.000 claims abstract description 20
- 238000005286 illumination Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Classifications
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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)
Abstract
The utility model relates to the technical field of photovoltaic string detection, in particular to a photovoltaic string fault testing device, which consists of a photovoltaic string and a fault testing device, wherein an MC4 plug is connected into the anode and the cathode of the photovoltaic string, the anode of the photovoltaic string is connected with one end of a first switch through the MC4 plug, the other end of the first switch is respectively connected with a port I of an insulation detection module, one end of a voltmeter and one end of a first resistor, the other end of the first resistor is connected with one end of a ammeter, the other end of the ammeter is respectively connected with one end of a second resistor, one end of a third resistor and one end of a fourth resistor, the other end of the second resistor, the other end of the third resistor and the other end of the fourth resistor are respectively connected with one end of a second switch, the other end of the second switch is respectively connected with the other end of the voltmeter, the port II of the insulation detection module and one end of the third switch, the other end of the third switch is grounded, and the other end of the third switch is connected with the cathode of the photovoltaic string through the MC4 plug.
Description
Technical Field
The utility model relates to the technical field of photovoltaic string detection, in particular to a photovoltaic string fault testing device.
Background
The photovoltaic module is a circuit unit with a certain direct current output formed by connecting a plurality of photovoltaic modules in series in the photovoltaic power generation system. At present, fault detection of the photovoltaic string mainly depends on an inverter, the photovoltaic string needs to be frequently plugged and unplugged in detection, time and labor are consumed, working efficiency is low, and the inverter is easy to cause electric quantity loss in frequent start and stop. Based on the above, we have designed a photovoltaic string fault testing device to overcome the above technical problems.
Disclosure of Invention
The utility model aims to provide a photovoltaic string fault testing device, which is small in size and light in weight, is convenient to carry to a photovoltaic field region for carrying out fault testing of a photovoltaic string by arranging the fault testing device without an external power supply, and solves the technical problems of inconvenience such as low working efficiency caused by repeated plugging and unplugging of the photovoltaic string in the fault detection of the photovoltaic string.
The embodiment of the utility model is realized by the following technical scheme:
the utility model provides a photovoltaic group cluster fault testing device, comprises photovoltaic group cluster and fault testing device, wherein, fault testing device includes: MC4 plug, first switch, insulation detection module, voltmeter, LED lamp, first resistance, ampere meter, second resistance, third resistance, fourth resistance, second switch, third switch; the MC4 plug is connected into the anode and the cathode of the photovoltaic group string, the anode of the photovoltaic group string is connected with one end of the first switch through the MC4 plug, the other end of the first switch is connected with one end of a port I of the insulation detection module, one end of the voltmeter and one end of the first resistor respectively, the other end of the first resistor is connected with one end of the ammeter, the other end of the ammeter is connected with one end of the second resistor, one end of the third resistor and one end of the fourth resistor respectively, the other end of the second resistor, the other end of the third resistor and the other end of the fourth resistor are connected with one end of the second switch respectively, the other end of the second switch is connected with the other end of the voltmeter, one end of the second switch and one end of the third switch respectively, the port III of the insulation detection module is grounded, and the other end of the third switch is connected with the cathode of the photovoltaic group string through the MC4 plug.
Optionally, the device further comprises a fuse, wherein the other end of the first switch is connected with one end of the fuse, and the other end of the fuse is respectively connected with the port I of the insulation detection module, one end of the voltmeter and one end of the first resistor.
Optionally, the device further comprises an auxiliary device, the auxiliary device comprising: LED lamps and fans; the other end of the fuse is connected with the port I of the insulation detection module, one end of the voltmeter, one end of the first resistor, one end of the LED lamp and one end of the fan respectively, and the other end of the first resistor, the other end of the LED lamp and the other end of the fan are connected with one end of the ammeter respectively.
Optionally, the second switch is specifically a knob type change-over switch.
Optionally, each component in the fault testing device is a direct current device.
Optionally, the fault testing device further comprises a case, and all components in the fault testing device are fixedly arranged in the case.
The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:
the fault testing device without an external power supply is small in size and light in weight, is convenient to carry to the photovoltaic field region to perform fault testing of the photovoltaic string, and solves the technical problems that the photovoltaic string needs to be repeatedly plugged and unplugged in the fault detection of the photovoltaic string, so that the working efficiency is low and the like.
Drawings
Fig. 1 is a schematic circuit diagram of a photovoltaic string fault testing device provided by the utility model.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
As shown in fig. 1, a fault testing device for a photovoltaic string is composed of a photovoltaic string and a fault testing device, wherein the fault testing device comprises: MC4 plug, first switch, insulation detection module, voltmeter, LED lamp, first resistance, ampere meter, second resistance, third resistance, fourth resistance, second switch, third switch; the MC4 plug is connected into the anode and the cathode of the photovoltaic group string, the anode of the photovoltaic group string is connected with one end of the first switch through the MC4 plug, the other end of the first switch is connected with one end of a port I of the insulation detection module, one end of the voltmeter and one end of the first resistor respectively, the other end of the first resistor is connected with one end of the ammeter, the other end of the ammeter is connected with one end of the second resistor, one end of the third resistor and one end of the fourth resistor respectively, the other end of the second resistor, the other end of the third resistor and the other end of the fourth resistor are connected with one end of the second switch respectively, the other end of the second switch is connected with the other end of the voltmeter, one end of the second switch and one end of the third switch respectively, the port III of the insulation detection module is grounded, and the other end of the third switch is connected with the cathode of the photovoltaic group string through the MC4 plug.
In this embodiment, the photovoltaic string is a power supply end, the MC4 plug is connected to the positive and negative poles of the photovoltaic string, the ground wire is grounded, and a complete electrical loop can be formed after the air switch (in this embodiment, the first switch and the third switch are both dc air switches) is closed. Specifically, the photovoltaic string is a power supply, the resistor is a load, meanwhile, the voltmeter, the ammeter and the insulation detection module (the insulation detection module is specifically a direct current charging pile insulation monitor in the embodiment, GYDCG-UBCMV3.0 is taken as an example for specific model) display the operation parameters, the fan can be used as an operation indication while radiating heat, the LED lamp can be used as an operation indication and provide night illumination, the fuse and the air switch can provide overcurrent and leakage protection for the fault test device, and the second switch can switch the resistance value of the access loop so as to adapt to different illumination conditions and photovoltaic strings with different configurations, so that the operation of the photovoltaic string can be operated under a better voltage condition.
More specifically, the novel electric power source further comprises a fuse, the other end of the first switch is connected with one end of the fuse, and the other end of the fuse is connected with the port I of the insulation detection module, one end of the voltmeter and one end of the first resistor respectively.
Specifically, the second switch is specifically a knob type change-over switch.
Specifically, each component in the fault testing device is a direct current device.
In this embodiment, the auxiliary device is further included, and the auxiliary device includes: LED lamps and fans; the other end of the fuse is connected with the port I of the insulation detection module, one end of the voltmeter, one end of the first resistor, one end of the LED lamp and one end of the fan respectively, and the other end of the first resistor, the other end of the LED lamp and the other end of the fan are connected with one end of the ammeter respectively.
In the application of this embodiment, the fan is configured to dissipate heat from the first resistor and the LED lamp, and meanwhile, the LED lamp may be used as an indication of operation of the first resistor, and similarly, may be used as an indication of operation of the first resistor and the fan, and may also provide night illumination.
In this embodiment, the fault testing device further includes a chassis, and each component in the fault testing device is fixedly disposed in the chassis.
In the application of the embodiment, the chassis is convenient for the installation and carrying of the fault testing device on one hand, and can effectively isolate dust outside the fault testing device on the other hand.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. The utility model provides a photovoltaic group cluster fault testing device which characterized in that comprises photovoltaic group cluster and fault testing device, wherein, fault testing device includes: MC4 plug, first switch, insulation detection module, voltmeter, LED lamp, first resistance, ampere meter, second resistance, third resistance, fourth resistance, second switch, third switch; the MC4 plug is connected into the anode and the cathode of the photovoltaic group string, the anode of the photovoltaic group string is connected with one end of the first switch through the MC4 plug, the other end of the first switch is connected with one end of a port I of the insulation detection module, one end of the voltmeter and one end of the first resistor respectively, the other end of the first resistor is connected with one end of the ammeter, the other end of the ammeter is connected with one end of the second resistor, one end of the third resistor and one end of the fourth resistor respectively, the other end of the second resistor, the other end of the third resistor and the other end of the fourth resistor are connected with one end of the second switch respectively, the other end of the second switch is connected with the other end of the voltmeter, one end of the second switch and one end of the third switch respectively, the port III of the insulation detection module is grounded, and the other end of the third switch is connected with the cathode of the photovoltaic group string through the MC4 plug.
2. The device for testing the fault of the photovoltaic string according to claim 1, further comprising a fuse, wherein the other end of the first switch is connected to one end of the fuse, and the other end of the fuse is connected to the port one of the insulation detection module, one end of the voltmeter, and one end of the first resistor, respectively.
3. The photovoltaic string fault testing device of claim 2, further comprising an auxiliary device comprising: LED lamps and fans; the other end of the fuse is connected with the port I of the insulation detection module, one end of the voltmeter, one end of the first resistor, one end of the LED lamp and one end of the fan respectively, and the other end of the first resistor, the other end of the LED lamp and the other end of the fan are connected with one end of the ammeter respectively.
4. The photovoltaic string fault testing device according to claim 1, wherein the second switch is in particular a rotary knob type change-over switch.
5. The photovoltaic string failure testing apparatus of any of claims 1-4, wherein each component within the failure testing apparatus is a direct current device.
6. The photovoltaic string fault testing device of claim 5, further comprising a chassis, each component within the fault testing device being fixedly disposed within the chassis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320791430.4U CN219577009U (en) | 2023-04-11 | 2023-04-11 | Photovoltaic group string fault testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320791430.4U CN219577009U (en) | 2023-04-11 | 2023-04-11 | Photovoltaic group string fault testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219577009U true CN219577009U (en) | 2023-08-22 |
Family
ID=87658032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320791430.4U Active CN219577009U (en) | 2023-04-11 | 2023-04-11 | Photovoltaic group string fault testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219577009U (en) |
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2023
- 2023-04-11 CN CN202320791430.4U patent/CN219577009U/en active Active
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