CN107659266A - The EL detection methods and EL detecting systems of solar power system - Google Patents
The EL detection methods and EL detecting systems of solar power system Download PDFInfo
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- CN107659266A CN107659266A CN201710846885.0A CN201710846885A CN107659266A CN 107659266 A CN107659266 A CN 107659266A CN 201710846885 A CN201710846885 A CN 201710846885A CN 107659266 A CN107659266 A CN 107659266A
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- 238000002503 electroluminescence detection Methods 0.000 title claims abstract description 109
- 238000000034 method Methods 0.000 title claims abstract description 59
- 210000003850 cellular structure Anatomy 0.000 claims abstract description 161
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 238000004146 energy storage Methods 0.000 claims description 40
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 210000004027 cell Anatomy 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000005401 electroluminescence Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 230000005923 long-lasting effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
- H02S50/15—Testing of PV devices, e.g. of PV modules or single PV cells using optical means, e.g. using electroluminescence
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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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Abstract
The application provides the EL detection methods and EL detecting systems of solar power system.The EL detection methods include：Inverter transmits electric energy to photovoltaic cell component；Photovoltaic cell component lights in the presence of electric energy；Image capture device collection photovoltaic cell component is in the image of luminance；EL detection means carries out EL detections according to image to photovoltaic cell component.The EL detection methods and EL detecting systems that the application provides, the detection efficiency for the photovoltaic cell component being favorably improved in solar power system.
Description
Technical field
The application is related to new energy field, and more particularly, to the battery electroluminescence of solar power system
(Electroluminescence, EL) detection method and EL detecting systems.
Background technology
Photovoltaic cell component is the core of solar power system, and the quality of its quality directly determines that solar energy is sent out
The power generation performance of electric system.Therefore, it is essential stream detection to be carried out to the photovoltaic cell component in solar power system
Journey.
At present, the common method detected to the photovoltaic cell component in solar power system detects for EL.Tradition
EL detection methods in, the alternating current in external power supply or portable power source is dressed up into direct current using rectifier, and pass through photovoltaic
Direct current is delivered to photovoltaic cell component by the power port on battery component.Photovoltaic cell component is sent out in the presence of direct current
After light, photovoltaic cell component is detected using EL detection means.
In traditional EL detection methods, assembly type detection can only detect to one piece of photovoltaic cell component every time；Group string
Formula detection device is huge, operating difficulties；And operation with high pressure can have security risks.These all make it that photovoltaic cell group can be reduced
The EL detection efficiencies of part.
The content of the invention
The application provides the EL detection methods and EL detecting systems of solar power system, is favorably improved solar power generation
The detection efficiency of photovoltaic cell component in system.
In a first aspect, this application provides a kind of EL detection methods of solar power system.The EL detection methods include：
Inverter transmits electric energy to photovoltaic cell component；Photovoltaic cell component lights in the presence of electric energy；Image capture device gathers
Photovoltaic cell component is in the image of luminance；The image that EL detection means gathers according to image capture device is to photovoltaic cell
Component carries out EL detections.
In the EL detection methods, electric energy is transmitted to photovoltaic cell component by inverter so that pass to photovoltaic cell component
In the case of a defeated electric energy, electroluminescent luminous effect can occur for all photovoltaic cell components being connected with inverter, so as to
To gather the EL images for all photovoltaic cell components being connected with inverter, and carry out EL detections.
Compared with it can only once test one piece or a string of photovoltaic cell components in traditional EL detection methods, the EL inspections of the application
Survey method can improve EL detection efficiencies.
In addition, the EL detection methods of the application do not have to remove the electricity for operating photovoltaic cell component as traditional EL detection methods
Source port, so as to save the time for the power port for looking for photovoltaic cell component, and then it is favorably improved the efficiency of EL detections.
With reference in a first aspect, in the first possible implementation, inverter transmits electric energy, bag to photovoltaic cell component
Include：Inverter transmits the electric energy in power network to photovoltaic cell component.
Because the electric energy in power network under normal circumstances can be more than the electric energy in extraneous portable power source, therefore, examined with traditional EL
Survey method is compared, and the electric energy in power network is transferred to photovoltaic cell component by inverter, can carry out more longlasting EL detections, so as to
It is favorably improved detection efficiency.
With reference to the first possible implementation, in second of possible implementation, inverter is to photovoltaic cell group
Electric energy in part transmission power network, including：AC conversion in power network is direct current by inverter, and is passed to photovoltaic cell component
Defeated direct current.
It could be lighted that is, photovoltaic cell component leads to direct current, and when power network can only provide alternating current, inverter will
Alternating current in power network is converted to direct current, and is delivered to photovoltaic cell component, to cause photovoltaic cell component to light.
With reference in a first aspect, in the third possible implementation, inverter transmits electric energy, bag to photovoltaic cell component
Include：Inverter transmits the electric energy in energy storage device to photovoltaic cell component.
With reference to the third possible implementation, in the 4th kind of possible implementation, inverter is to photovoltaic cell group
Electric energy in part transmission energy storage device, including：AC conversion in energy storage device is direct current by inverter, and to photovoltaic electric
Pond component transmits the direct current.
It could be lighted that is, photovoltaic cell component leads to direct current, and when energy storage device can only provide alternating current, inversion
Alternating current in person's energy storage device is converted to direct current by device, and is delivered to photovoltaic cell component, to cause photovoltaic cell component
It is luminous.
With reference to first aspect or any one above-mentioned possible implementation, in the 5th kind of possible implementation, figure
As collecting device is mobile image acquisition equipment.
Correspondingly, EL detection methods also include：Inverter sends the position of inverter to mobile image acquisition equipment.Its
In, image capture device gathers the image of photovoltaic cell component, including：Mobile image acquisition equipment gathers the light of the opening position
Photovoltaic cell components are in the image of luminance.
In the implementation, the image that photovoltaic cell component carries out EL detections is gathered using mobile image acquisition equipment,
The convenience of IMAQ can be improved, so as to improve the efficiency of EL detections.
For example, can more easily be collected in mobile image acquisition equipment, deployment area is wide, deployment distance is remote or deployment
The EL images of the photovoltaic cell component of environment difference.
Because inverter is typically that therefore, inverter is to mobile image acquisition together with photovoltaic cell component deployment
The position that equipment sends inverter can be equal to the position that photovoltaic cell component to be detected is sent to mobile image acquisition equipment
Put.This allows mobile image acquisition equipment more accurately to collect the EL images of photovoltaic cell component, so as to help to carry
The efficiency of high EL detections and automation positioning.
With reference to first aspect or any one above-mentioned possible implementation, in the 6th kind of possible implementation, EL
Detection method also includes：Inverter receives the instruction that control system is sent；Wherein, inverter is transmitted in power network or energy storage device
Electric energy to photovoltaic cell group, including：Inverter transmits the electric energy in power network or energy storage device according to the instruction of the instruction
To photovoltaic cell group.
That is, control system can be sent and instruct when needing to carry out EL detections to inverter, instruction inverter will
The electric energy of power network or energy storage device is transmitted to photovoltaic cell component.Correspondingly, inverter receives the finger of control system transmission
After order, it can start to transmit the electric energy of power network or energy storage device to photovoltaic cell component under the instruction of the instruction.
For example, after inverter receives the instruction of control system, start to be converted in the alternating current in power network or energy storage device
Direct current, and direct current is delivered to photovoltaic cell component.
Alternatively, control system can also send to inverter and instruct, and instruction inverter stops defeated to photovoltaic cell component
Power transmission energy, but rather indicate that inverter is by the electrical energy transportation of photovoltaic cell component to power network or energy storage device.
For example, after inverter receives the instruction of control system, stop changing in the alternating current in power network or energy storage device
For direct current, so as to stop conveying direct current to photovoltaic cell component.Now, inverter can will be straight in photovoltaic cell component
Stream electricity is converted to alternating current, and is delivered to power network or energy storage device.
In a kind of possible implementation, control system includes EL detection means.Correspondingly, EL detection methods are also wrapped
Include：Mobile image acquisition equipment sends the image of mobile image acquisition equipment collection to control system.
In other words, mobile image acquisition equipment sends the image collected to EL detection means.
Second aspect, this application provides a kind of EL detecting systems of solar power system.The EL detecting systems include：
Photovoltaic cell component, inverter, image capture device and EL detection means, photovoltaic cell component are connected with inverter.
Inverter is used to transmit electric energy to photovoltaic cell component；Photovoltaic cell component is used to send out in the presence of the electric energy
Light；Image capture device is used to gather the image that photovoltaic cell component is in luminance；EL detection means is used for according to image
The image of collecting device collection carries out EL detections to photovoltaic cell component.
In the EL detecting systems, electric energy is transmitted to photovoltaic cell component by inverter so that pass to photovoltaic cell component
In the case of a defeated electric energy, electroluminescent luminous effect can occur for all photovoltaic cell components being connected with inverter, so as to
To gather the EL images for all photovoltaic cell components being connected with inverter, and carry out EL detections.
Compared with it can only once test one piece or a string of photovoltaic cell components in traditional EL detection methods, the EL inspections of the application
Examining system can improve EL detection efficiencies.
In addition, in the EL detecting systems of the application, without going to operate photovoltaic cell component as traditional EL detection methods
Power port, so as to save the time for the power port for looking for photovoltaic cell component, so be favorably improved EL detection
Efficiency.
With reference to second aspect, in the first possible implementation, power network is also included in EL detecting systems.Wherein, it is inverse
Become implement body to be used to transmit the electric energy in power network or the energy storage device to photovoltaic cell component.
Because the electric energy in power network under normal circumstances can be more than the electric energy in extraneous portable power source, therefore, EL detections system
In system, the electric energy in power network is transferred to photovoltaic cell component by inverter, more longlasting EL detections can be carried out, so as to contribute to
Improve detection efficiency.
With reference to the first possible implementation, in second of possible implementation, inverter is specifically used for：By electricity
AC conversion in net or the energy storage device is direct current, and transmits direct current to photovoltaic cell component.
It could be lighted that is, photovoltaic cell component leads to direct current, and when power network can only provide alternating current, inverter will
Alternating current in power network is converted to direct current, and is delivered to photovoltaic cell component, to cause photovoltaic cell component to light.
With reference in a first aspect, in the third possible implementation, energy storage device is also included in EL detecting systems.Inversion
Device transmits electric energy to photovoltaic cell component, including：Inverter transmits the electric energy in energy storage device to photovoltaic cell component.
With reference to the third possible implementation, in the 4th kind of possible implementation, wherein, inverter is specifically used for
It is direct current by the AC conversion in energy storage device, and the direct current is transmitted to photovoltaic cell component.
It could be lighted that is, photovoltaic cell component leads to direct current, and when energy storage device can only provide alternating current, inversion
Alternating current in person's energy storage device is converted to direct current by device, and is delivered to photovoltaic cell component, to cause photovoltaic cell component
It is luminous.
With reference to first aspect or any one above-mentioned possible implementation, in the 5th kind of possible implementation, figure
As collecting device is mobile image acquisition equipment.Wherein, the inverter is additionally operable to send to the mobile image acquisition equipment
The position of the inverter；The photovoltaic cell component that described image collecting device is specifically used for gathering the opening position is in luminous
The image of state.
In the implementation, the image that photovoltaic cell component carries out EL detections is gathered using mobile image acquisition equipment,
The convenience of IMAQ can be improved, so as to improve the efficiency of EL detections.
For example, can more easily be collected in mobile image acquisition equipment, deployment area is wide, deployment distance is remote or deployment
The EL images of the photovoltaic cell component of environment difference.
Because inverter is typically that therefore, inverter is to mobile image acquisition together with photovoltaic cell component deployment
The position that equipment sends inverter can be equal to the position that photovoltaic cell component to be detected is sent to mobile image acquisition equipment
Put.This allows mobile image acquisition equipment more accurately to collect the EL images of photovoltaic cell component, so as to help to carry
The efficiency of high EL detections and automation positioning.
With reference to first aspect or any one above-mentioned possible implementation, in the 6th kind of possible implementation, EL
Detecting system also includes control system.Inverter is additionally operable to receive the instruction that control system is sent.Wherein, inverter is specifically used for
According to the instruction of the instruction, electric energy is transmitted to photovoltaic cell group.
That is, control system can be sent and instruct when needing to carry out EL detections to inverter, instruction inverter will
The electric energy of power network or energy storage device is transmitted to photovoltaic cell component.Correspondingly, inverter receives the finger of control system transmission
After order, it can start to transmit the electric energy of power network or energy storage device to photovoltaic cell component under the instruction of the instruction.
For example, after inverter receives the instruction of control system, start to be converted in the alternating current in power network or energy storage device
Direct current, and direct current is delivered to photovoltaic cell component.
Alternatively, control system can also send to inverter and instruct, and instruction inverter stops defeated to photovoltaic cell component
Power transmission energy, but rather indicate that inverter is by the electrical energy transportation of photovoltaic cell component to power network or energy storage device.
For example, after inverter receives the instruction of control system, stop changing in the alternating current in power network or energy storage device
For direct current, so as to stop conveying direct current to photovoltaic cell component.Now, inverter can will be straight in photovoltaic cell component
Stream electricity is converted to alternating current, and is delivered to power network or energy storage device.
In a kind of possible implementation, control system includes EL detection means.
Brief description of the drawings
Fig. 1 is the schematic diagram of the solar power system of the application one embodiment；
Fig. 2 is the indicative flowchart of the EL detection methods of the application one embodiment；
Fig. 3 is the indicative flowchart of the EL detection methods of the application another embodiment；
Fig. 4 is the indicative flowchart of the EL detection methods of the application another embodiment；
Fig. 5 is the schematic diagram of the EL detecting systems of the application one embodiment；
Fig. 6 is the schematic diagram of the EL detecting systems of the application another embodiment；
Fig. 7 is the schematic diagram of the EL detecting systems of the application another embodiment.
Embodiment
Below in conjunction with accompanying drawing, the technical scheme in the application is described.
As shown in figure 1, in the solar power system of the application one embodiment can include photovoltaic cell component 110,
Inverter 120, power network 130 and control system 140.
Wherein, photovoltaic cell component 110 is referred to as photoelectric subassembly or photovoltaic module or photovoltaic group string.Photovoltaic cell group
Part 110 can be a string or more strings.
Photovoltaic cell component 110 is connected with inverter 120, and inverter 120 is connected with power network 130, inverter 120 and control
It can be communicated between system 140.Instructed for example, control system is sent to inverter.
When solar power system shown in Fig. 1 is operated in power generation mode, photovoltaic cell component 110 converts solar energy into
Direct current；Direct current is converted to alternating current by inverter 120；Power network 130 transmits alternating current.
It should be understood that the solar power system shown in Fig. 1 is only example.In the solar power system of the embodiment of the present application
More devices or equipment can also be included.For example, it is also possible to including transformer.
Or less device or equipment can be included in the solar power system of the embodiment of the present application.For example, can be with
Do not include control system 140.
Or similar device or equipment can be included in the solar power system of the embodiment of the present application.For example, power network
130 could alternatively be energy storage device.
Or each device or equipment can also include more work(in the solar power system of the embodiment of the present application
Energy.For example, inverter 120 can also have communication function.
It should be understood that connection described in the embodiment of the present application, can be joined directly together or be indirectly connected.For example,
It can be connected between inverter 120 and power network 130 by transformer.
Fig. 2 is the indicative flowchart of the EL detection methods of the application one embodiment.It should be understood that Fig. 2 shows that EL is examined
The step of survey method or operation, but these steps or operation are only examples, the embodiment of the present application can also carry out other operations or
The deformation of each operation in person Fig. 2.In addition, each step in Fig. 2 can be held according to the different orders presented from Fig. 2
OK, and it is possible to do not really want to perform all operationss in Fig. 2.
S210, inverter 120 transmit electric energy to photovoltaic cell component 110.
S220, photovoltaic cell component 110 light in the presence of electric energy.
For example, in the presence of the electric energy that inverter 120 transmits electroluminescent luminous effect occurs for photovoltaic cell component 110, so as to
It is luminous.
S230, image capture device collection photovoltaic cell component 110 are in the image of luminance.
For example, image capture device collection photovoltaic cell component 110 is in the image of luminance.Photovoltaic cell component
110 when being in luminance, and the image that image capture device collects is properly termed as EL images.
S240, EL detection means carry out EL detections according to the image that image capture device gathers to photovoltaic cell component 110.
The method that EL detection means carries out EL detections according to EL images to photovoltaic cell component, may be referred to prior art.
In the embodiment of the present application, electric energy is transmitted to photovoltaic cell component by inverter so that pass to photovoltaic cell component
In the case of a defeated electric energy, electroluminescent luminous effect can occur for all photovoltaic cell components being connected with inverter, so as to
To gather the EL images for all photovoltaic cell components being connected with inverter, and carry out EL detections.
Compared with it once can only test a string of photovoltaic cell components in traditional EL detection methods, the EL detection methods of the application
EL detection efficiencies can be improved.
In addition, the EL detection methods of the embodiment of the present application do not have to go for photovoltaic cell component as traditional EL detection methods
Power port, so as to save the time for the power port for looking for photovoltaic cell component, so be favorably improved EL detection
Efficiency.
Alternatively, inverter 120 transmits electric energy to photovoltaic cell component 110, can include：Inverter 120 is to photovoltaic electric
Pond component 110 transmits the electric energy in power network 130.
Because the electric energy in power network under normal circumstances can be more than the electric energy in extraneous portable power source, therefore, examined with traditional EL
Survey method is compared, and the electric energy in power network is transferred to photovoltaic cell component by inverter, can carry out more longlasting EL detections, so as to
It is favorably improved detection efficiency.
Alternatively, inverter 120 transmits the electric energy in power network 130 to photovoltaic cell component 110, can include：Inverter
AC conversion in power network 130 is direct current by 120, and transmits direct current to photovoltaic cell component 110.
Photovoltaic cell component, which leads to direct current, to light, and when power network or energy storage device can only provide alternating current, inversion
Alternating current in power network or energy storage device is converted to direct current by device, and is delivered to photovoltaic cell component, to cause photovoltaic electric
Pond component lights, so as to improve the flexibility of EL detections.
Alternatively, inverter 120 transmits electric energy to photovoltaic cell component 110, can include：Inverter 120 is to photovoltaic electric
Pond component 110 transmits the electric energy in energy storage device.
Alternatively, inverter 120 transmits the electric energy in energy storage device to photovoltaic cell component 110, can include：Inverter
AC conversion in energy storage device is direct current by 120, and transmits direct current to photovoltaic cell component 110.
Alternatively, inverter 120 can utilize the inverter circuit of inverter in itself to realize exchange (alternating
Current, AC) to direct current (direct current, DC) conversion, the alternating current in power network 130 is converted to directly with realizing
Stream electricity, and it is transferred to photovoltaic cell component.
Or AC-DC translation circuits can be increased in inverter 120, the alternating current in power network 130 is converted to realizing
Direct current, and it is transferred to photovoltaic cell component.
Alternatively, the image capture device in S230 can be mobile image acquisition equipment.Correspondingly, the EL shown in Fig. 2
It can also include in detection method：Inverter 120 sends the position of inverter 120 to mobile image acquisition equipment；IMAQ
Equipment gathers the image of photovoltaic cell component 110, can include：Mobile image acquisition equipment collection inverter 120 present position
The photovoltaic cell component 110 at place is in the image of luminance.
Alternatively, the EL detection methods shown in Fig. 2 can also include：Inverter 120 receives the finger that control system 140 is sent
Order.Wherein, inverter 120 transmits electric energy to photovoltaic cell group 110, can include：Inverter 120 is according to control system 140
The instruction of instruction, electric energy is transmitted to photovoltaic cell group 110.
Alternatively, EL detection means can be included in control system 140.Correspondingly, the EL detection methods shown in Fig. 2 may be used also
With including：Mobile image acquisition equipment sends the image of mobile image acquisition equipment collection to control system 140.
With reference to Fig. 3 and Fig. 4, the EL detection methods of the embodiment of the present application are discussed in detail.
The EL detection methods of another embodiment of the application are as shown in Figure 3.It should be understood that Fig. 3 shows EL detection methods
Step or operation, but these steps or operation are only examples, and the embodiment of the present application can also carry out in other operations or Fig. 3
The deformation of each operation.In addition, each step in Fig. 3 can perform according to the different orders presented from Fig. 3, and have
It may not really want to perform all operationss in Fig. 3.
EL detection methods shown in Fig. 3 can include：AC conversion in power network 130 is direct current by inverter 120,
And transmit direct current to photovoltaic cell component 110；Photovoltaic cell component 110 lights in the presence of the direct current；IMAQ
Equipment collection photovoltaic cell component 110 is in the image of luminance, i.e. EL images；EL detection means is according to EL images to photovoltaic
Battery component 110 carries out EL detections.
In EL detection methods shown in Fig. 3, the AC conversion in power network 130 is that direct current electricity output is given by inverter 120
Photovoltaic cell component 110 so that photovoltaic cell component 110 is luminous, not only can be with one-time detection more so as to carry out EL detections
More photovoltaic cell components, and more longlasting EL detections can be carried out, so as to improve the efficiency of EL detections.In addition, also
The flexibility of EL detections can be improved.
The EL detection methods of another embodiment of the application are as shown in Figure 4.It should be understood that Fig. 4 shows EL detection methods
Step or operation, but these steps or operation are only examples, and the embodiment of the present application can also carry out in other operations or Fig. 3
The deformation of each operation.In addition, each step in Fig. 4 can perform according to the different orders presented from Fig. 4, and have
It may not really want to perform all operationss in Fig. 4.
In EL detection methods shown in Fig. 4, control system 140 sends to inverter and instructed, and indicates inverter by power network 130
In electrical energy transportation to photovoltaic cell component 110；After inverter 120 receives the instruction of control system 140, by power network 130
AC conversion is direct current, and is transported to photovoltaic cell component 110；Photovoltaic cell component 110 is sent out in the presence of direct current
Light；Inverter 120 sends the position of oneself to mobile image acquisition equipment；Mobile image acquisition equipment receives inverter 120
Position after, be moved to the EL images of the location of inverter 120 collection photovoltaic cell component 110, and the EL that will be collected
Image is sent to control system 140；EL detection means in control system 140 is according to the EL images to photovoltaic cell component 110
Carry out EL detections.
In EL detection methods shown in Fig. 4, inverter exports electric energy to carry out EL detections to photovoltaic cell component, can be with one
Secondary batch detection photovoltaic cell component, so as to improve the efficiency of EL detections.
Further, electric energy in power network is transferred to photovoltaic cell component by inverter, more due to that can include in power network
Electricity, so as to carry out more longlasting EL detections, so as to improve EL detection efficiencies；
Further, inverter by the AC conversion in power network be direct current electricity output to photovoltaic cell component, Ke Yiti
The flexibility of high EL detections.
Further, inverter sends the position of oneself to mobile image acquisition equipment so that mobile image acquisition equipment
The position of inverter can be positioned, and gathers the photovoltaic cell component near inverter, so as to improve IMAQ just
Victory, and then the efficiency of EL detections can be improved.
For example, the deployment area of inverter and photovoltaic cell component is wide, the region of deployment is inclined or remote or bad environments feelings
Under condition, inverter sends the position of oneself to mobile image acquisition, and then mobile image acquisition equipment determines the position of inverter
And gather EL images.This can improve the efficiency of EL detections compared with manually collection EL images.
Fig. 5 is the exemplary block diagram of the EL detecting systems 500 of the application one embodiment.It should be understood that the EL shown in Fig. 5
Detecting system is only example.More devices or equipment can also be included in the EL detecting systems of the embodiment of the present application.Or this
Apply that in the solar power system of embodiment similar device or equipment can be included.
Inverter 540 is used to transmit electric energy to photovoltaic cell component 530.
Photovoltaic cell component 530 is used to light in the presence of the electric energy.
Image capture device 510 is used to gather the image that photovoltaic cell component 530 is in luminance.
EL detection means 520 is used to carry out EL to photovoltaic cell component 530 according to the image that image capture device 510 gathers
Detection.
Alternatively, as shown in fig. 6, also including power network 550 or energy storage device 550 in EL detecting systems 500.Correspondingly, it is inverse
Become device 540 to be specifically used for transmitting the electric energy in power network 550 or energy storage device 550 to photovoltaic cell component 530.
Alternatively, the inverter 540 in Fig. 6 is specifically used for：By the AC conversion in power network 550 or energy storage device 550
For direct current, and the direct current is transmitted to photovoltaic cell component 530.
Alternatively, image capture device 510 is mobile image acquisition equipment.Correspondingly, inverter 540 is additionally operable to image
Collecting device 510 sends the position of inverter 540；Image capture device 510 is specifically used for the photovoltaic electric for gathering the opening position
Pond component is in the image of luminance.
Alternatively, EL detecting systems 500 also include control system 560.Inverter 540 is additionally operable to receive control system 560
The instruction of transmission.Correspondingly, inverter 540 is specifically used for the instruction according to the instruction, and electricity is transmitted to photovoltaic cell group 530
Energy.
Alternatively, as shown in fig. 7, control system includes EL detection means.
Those of ordinary skill in the art are it is to be appreciated that the list of each example described with reference to the embodiments described herein
Member and algorithm steps, it can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
Performed with hardware or software mode, application-specific and design constraint depending on technical scheme.Professional and technical personnel
Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed
Scope of the present application.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, can be with
Realize by another way.For example, device embodiment described above is only schematical, for example, the unit
Division, only a kind of division of logic function, can there is other dividing mode, such as multiple units or component when actually realizing
Another system can be combined or be desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or
The mutual coupling discussed or direct-coupling or communication connection can be the indirect couplings by some interfaces, device or unit
Close or communicate to connect, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the application can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.
If the function is realized in the form of SFU software functional unit and is used as independent production marketing or in use, can be with
It is stored in a computer read/write memory medium.Based on such understanding, the technical scheme of the application is substantially in other words
The part to be contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are causing a computer equipment (can be
People's computer, server, or network equipment etc.) perform each embodiment methods described of the application all or part of step.
And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (read-only memory, ROM), arbitrary access are deposited
Reservoir (random access memory, RAM), magnetic disc or CD etc. are various can be with the medium of store program codes.
Described above, the only embodiment of the application, but the protection domain of the application is not limited thereto is any
Those familiar with the art can readily occur in change or replacement in the technical scope that the application discloses, and should all contain
Cover within the protection domain of the application.Therefore, the protection domain of the application should be based on the protection scope of the described claims.
Claims (12)
- A kind of 1. battery electroluminescence EL detection methods of solar power system, it is characterised in that including：Inverter transmits electric energy to photovoltaic cell component；The photovoltaic cell component lights in the presence of the electric energy；Image capture device gathers the image that the photovoltaic cell component is in luminance；EL detection means carries out EL detections according to the image that described image collecting device gathers to the photovoltaic cell component.
- 2. EL detection methods according to claim 1, it is characterised in that the inverter transmits electricity to photovoltaic cell component Can, including：The inverter transmits the electric energy in power network or energy storage device to the photovoltaic cell component.
- 3. EL detection methods according to claim 2, it is characterised in that the inverter passes to the photovoltaic cell component Electric energy in power transmission network or energy storage device, including：AC conversion in the power network or the energy storage device is direct current by the inverter, and to the photovoltaic cell Component transmits the direct current.
- 4. EL detection methods according to any one of claim 1 to 3, it is characterised in that described image collecting device is Mobile image acquisition equipment；Wherein, the EL detection methods also include：The inverter sends the position of the inverter to the mobile image acquisition equipment；Described image collecting device gathers the image of the photovoltaic cell component, including：The photovoltaic cell component of the mobile image acquisition equipment collection opening position is in the image of luminance.
- 5. EL detection methods according to claim 4, it is characterised in that the EL detection methods also include：The inverter receives the instruction that control system is sent；Wherein, the inverter transmits electric energy to photovoltaic cell group, including：The inverter transmits electric energy according to the instruction of the instruction to the photovoltaic cell group.
- 6. EL detection methods according to claim 5, it is characterised in that the control system includes the EL detections dress Put；The EL detection methods also include：The mobile image acquisition equipment sends the image of the mobile image acquisition equipment collection to the control system.
- A kind of 7. electroluminescent EL detecting systems of solar power system, it is characterised in that including：Photovoltaic cell component, it is inverse Become device, image capture device and EL detection means；The inverter is used to transmit electric energy to the photovoltaic cell component；The photovoltaic cell component is used to light in the presence of the electric energy；Described image collecting device is used to gather the image that the photovoltaic cell component is in luminance；The EL detection means is used to carry out EL to the photovoltaic cell component according to the image that described image collecting device gathers Detection.
- 8. EL detecting systems according to claim 7, it is characterised in that also include power network or storage in the EL detecting systems Can equipment；Wherein, the inverter is specifically used for transmitting the electricity in the power network or the energy storage device to the photovoltaic cell component Energy.
- 9. EL detecting systems according to claim 8, it is characterised in that the inverter is specifically used for：It is direct current by the AC conversion in the power network or the energy storage device, and institute is transmitted to the photovoltaic cell component State direct current.
- 10. the EL detecting systems according to any one of claim 7 to 9, it is characterised in that described image collecting device is Mobile image acquisition equipment；Wherein, the inverter is additionally operable to send the position of the inverter to the mobile image acquisition equipment；Described image collecting device is in the image of luminance specifically for gathering the photovoltaic cell component of the opening position.
- 11. EL detecting systems according to claim 10, it is characterised in that the EL detecting systems also include control system System；The inverter is additionally operable to receive the instruction that the control system is sent；Wherein, the inverter is specifically used for the instruction according to the instruction, and electric energy is transmitted to the photovoltaic cell group.
- 12. EL detecting systems according to claim 11, it is characterised in that the control system includes the EL detections Device.
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| CN201710846885.0A CN107659266A (en) | 2017-09-19 | 2017-09-19 | The EL detection methods and EL detecting systems of solar power system |
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| CN201710846885.0A CN107659266A (en) | 2017-09-19 | 2017-09-19 | The EL detection methods and EL detecting systems of solar power system |
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| CN112290886A (en) * | 2020-09-18 | 2021-01-29 | 华为技术有限公司 | Fault detection method and device and photovoltaic power generation system |
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| WO2022000466A1 (en) * | 2020-07-03 | 2022-01-06 | 华为数字能源技术有限公司 | Electric energy backward-flow control method, converter, and photovoltaic power generation system |
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| WO2022178680A1 (en) * | 2021-02-23 | 2022-09-01 | 华为数字能源技术有限公司 | Photovoltaic cell testing method and apparatus, and system, medium, and chip |
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