CN114583699A - Rapid turn-off device for photovoltaic power generation, intelligent photovoltaic module and turn-off method - Google Patents
Rapid turn-off device for photovoltaic power generation, intelligent photovoltaic module and turn-off method Download PDFInfo
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- 230000009471 action Effects 0.000 claims description 26
- 238000004891 communication Methods 0.000 abstract description 7
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- 238000004519 manufacturing process Methods 0.000 description 4
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- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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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
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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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 invention belongs to the technical field of photovoltaic power generation, and particularly relates to a quick turn-off device for photovoltaic power generation, an intelligent photovoltaic module and a turn-off method, wherein the quick turn-off device for photovoltaic power generation comprises the following components: a controller and a plurality of drive assemblies; the output end of each photovoltaic power generation unit is connected with a corresponding switch box; the controller is arranged in one of the switch boxes; each driving component is respectively arranged in the other switch boxes, namely the controller outputs corresponding level signals to control the working state of the shut-off device connected with the controller, and each driving component is controlled to drive the corresponding shut-off device to act; according to the photovoltaic power generation unit, the controller controls each driving component to drive the shutoff device to work, the output of the photovoltaic power generation unit can be quickly shut off, meanwhile, the control panel is connected with each driving component through the signal line, the cost is low, the communication effect is good, the signal line can be wired from the inside of the photovoltaic power generation unit, and the risk of damage is reduced.
Description
Technical Field
The invention belongs to the technical field of photovoltaic power generation, and particularly relates to a quick turn-off device for photovoltaic power generation, an intelligent photovoltaic module and a turn-off method.
Background
In the traditional photovoltaic power generation, a plurality of photovoltaic modules are connected in series to form a string, and then an inverter is connected to convert direct current into alternating current and then grid connection is carried out. When a fire disaster occurs to the photovoltaic system, the photovoltaic direct-current voltage up to kilovolt causes difficulty in fire fighting and rescue, and the direct-current voltage of the system can be quickly reduced to a safe voltage range by the component-level quick turn-off function, so that rescue is conveniently implemented.
For a multi-junction-box intelligent assembly with an integrated turn-off function, two turn-off methods are generally adopted to cut off the output of a photovoltaic assembly, one is that each photovoltaic power generation unit is provided with a switch box (a turn-off device arranged in the junction box is defined as the switch box), and a corresponding bypass diode is arranged in the switch box for connection and protection, and meanwhile, each switch box needs a control panel for control, so that the manufacturing cost is too high; the other is that one of the photovoltaic units is provided with a switch box, and the other photovoltaic units are provided with junction boxes, except that the corresponding switch box and junction box are provided with bypass diodes of respective photovoltaic units, a total bypass diode is also arranged in the switch box to realize component-level bypass, and the total bypass diode is connected between total positive output and total negative output, so that a power line is required to be connected into the switch box from the total positive electrode or the total negative electrode, and the manufacturing cost is increased.
Therefore, it is desirable to develop a new fast turn-off device, an intelligent photovoltaic module and a turn-off method for photovoltaic power generation to solve the above problems.
Disclosure of Invention
The invention aims to provide a quick turn-off device for photovoltaic power generation, an intelligent photovoltaic module and a turn-off method.
In order to solve the above technical problem, the present invention provides a fast turn-off device for photovoltaic power generation, including: the controller and a plurality of driving components are electrically connected with the controller; the output end of each photovoltaic power generation unit is connected with a corresponding switch box, and the switch boxes are sequentially connected in series; the controller is arranged in one of the switch boxes and is connected with the breaker in the switch box; each driving assembly is respectively arranged in the other switch boxes, and each driving assembly is respectively connected with the corresponding switch-off device in the switch box, namely, the controller outputs corresponding level signals to control the working state of the switch-off device connected with the controller, and drives the corresponding switch-off device to act by controlling each driving assembly.
Further, the drive assembly includes: the output module is electrically connected with the controller; the output modules are arranged in the corresponding switch boxes and are connected with the corresponding turn-off devices; when the output module receives the corresponding level signal output by the controller, the level signal is output to the corresponding cut-off device, namely, the corresponding cut-off device is controlled to execute an opening action or a closing action.
Further, the controller is connected with the output modules through signal lines, and the signal lines are wired from the inside of the photovoltaic power generation units.
Further, each output module is connected in series on a signal line, that is, the controller controls each breaker to synchronously execute an opening action or a closing action.
In another aspect, the present invention provides an intelligent photovoltaic module, comprising: the photovoltaic power generation system comprises a plurality of photovoltaic power generation units, a plurality of switch boxes, a controller and a plurality of driving assemblies electrically connected with the controller; the output end of each photovoltaic power generation unit is connected with a corresponding switch box, and the switch boxes are sequentially connected in series; the controller is arranged in one of the switch boxes and is connected with the breaker in the switch box; each driving assembly is respectively arranged in the other switch boxes, and each driving assembly is respectively connected with the corresponding switch-off device in the switch box, namely, the controller outputs corresponding level signals to control the working state of the switch-off device connected with the controller, and drives the corresponding switch-off device to act by controlling each driving assembly.
Furthermore, each switch box leads out a positive power line and a negative power line of the corresponding photovoltaic power generation unit; each shut-off device is arranged on a corresponding negative power line or a corresponding positive power line, and a corresponding bypass diode is arranged between the positive power line and the negative power line, namely, the positive power line of one switch box is connected with the negative power line of the other switch box.
Further, the drive assembly includes: the output module is electrically connected with the controller; the output modules are arranged in the corresponding switch boxes and are connected with the corresponding turn-off devices; when the output module receives the corresponding level signal output by the controller, the level signal is output to the corresponding shutoff device, namely, the corresponding shutoff device is controlled to execute an opening action or a closing action.
Furthermore, the controller is connected with each output module through a signal wire, and the signal wire is wired from the inside of each photovoltaic power generation unit; each output module is connected in series on a signal line, namely, the controller controls each breaker to synchronously execute opening action or closing action.
In a third aspect, the present invention provides a shutdown method, comprising: connecting the output end of each photovoltaic power generation unit with a corresponding switch box so as to sequentially connect the switch boxes in series; arranging a controller in one of the switch boxes so that the controller is connected with a shutoff device in the switch box; respectively arranging each driving assembly in the other switch boxes so that each driving assembly is respectively connected with the turn-off device in the corresponding switch box; the controller outputs corresponding level signals to control the working state of the shut-off device connected with the controller, and each driving component is controlled to drive the corresponding shut-off device to act.
Further, be suitable for adopting above-mentioned intelligent photovoltaic module to work.
The photovoltaic power generation unit has the advantages that the controller controls each driving component to drive the shutoff device to work, the output of the photovoltaic power generation unit can be quickly shut off, meanwhile, the control panel is connected with each driving component through the signal line, the cost is low, the communication effect is good, the signal line can be wired from the inside of the photovoltaic power generation unit, and the risk of damage is reduced.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a circuit diagram of a rapid turn-off device for photovoltaic power generation of the present invention;
fig. 2 is a circuit diagram of an alternative form of the rapid turn-off device for photovoltaic power generation of the present invention;
fig. 3 is a circuit diagram of another alternative of the rapid shutdown device for photovoltaic power generation of the present invention;
FIG. 4 is a functional block diagram of the photovoltaic power generation quick turn-off apparatus of the present invention;
FIG. 5 is a schematic diagram of the circuit of the present invention corresponding to FIG. 2;
fig. 6 is a schematic diagram of the circuit of the present invention corresponding to fig. 3.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
In the present embodiment, as shown in fig. 1 to 6, the present embodiment provides a rapid turn-off device for photovoltaic power generation, including: the controller U1 and a plurality of driving components electrically connected with the controller U1; the output end of each photovoltaic power generation unit is connected with a corresponding switch box, and the switch boxes are sequentially connected in series; the controller U1 is arranged in one switch box, and the controller U1 is connected with a shutoff device in the switch box; each driving assembly is respectively arranged in the other switch boxes, and each driving assembly is respectively connected with the turn-off device in the corresponding switch box, that is, the controller U1 outputs a corresponding level signal to control the working state of the turn-off device connected with the controller U1, and drives the corresponding turn-off device to act by controlling each driving assembly.
In this embodiment, this embodiment controls each drive assembly drive shutoff ware through controller U1 and carries out work, can realize shutting off photovoltaic power generation unit's output fast, and the control panel passes through signal line with each drive assembly and is connected simultaneously, and the cost is lower, communication effect is good, can realize that the signal line walks the line from photovoltaic power generation unit inside, reduces the risk of damage.
In this embodiment, the driving assembly includes: the output module is electrically connected with the controller U1; the output modules are arranged in the corresponding switch boxes and are connected with the corresponding turn-off devices; when the output module receives the corresponding level signal output by the controller U1, the corresponding level signal is output to the corresponding switch, that is, the corresponding switch is controlled to perform an opening action or a closing action.
In this embodiment, as an optional implementation manner of the output module, the output module may adopt an output optocoupler.
In the embodiment, as shown in fig. 1, the controller U1 is powered by the power supply, and the controller U1 can directly output a corresponding level signal to the switch-off device K1 to control the switch-off device K1, i.e., control the switch-off device K1 to perform an opening action or a closing action.
In this embodiment, as shown in fig. 2, when the output module employs an output optical coupler, the power supply, the switch K2, the output optical coupler OP1, the output optical coupler OP2, and the protection resistor R1 form a loop, and the controller U1 can control the switch K2 to be closed, so that the output optical coupler OP1 and the output optical coupler OP2 respectively output high levels to control the switch-off device K3 and the switch-off device K4, that is, control the switch-off device K3 and the switch-off device K4 to perform a closing action, or the controller U1 can control the switch K2 to be opened, so that the output optical coupler OP1 and the output optical coupler OP2 respectively output low levels to control the switch-off device K3 and the switch-off device K4, that is, control the switch-off device K3 and the switch-off device K4 to perform an opening action; adopt corresponding output opto-coupler in this embodiment is based on the optimization scheme that improves electrical isolation, reduce cost, adopts corresponding output opto-coupler can realize signal unidirectional transmission, and electrical isolation has been realized completely to input and output, and output signal does not have the influence to the input, possesses the interference killing feature reinforce, job stabilization, and is contactless, long service life, advantage that transmission efficiency is high.
In this embodiment, as shown in fig. 3, each of the unit U3 and the unit U4 includes a transformer, a rectifier filter circuit, and a driving unit, and the driving circuit includes a protection resistor R1, a dc blocking capacitor C4, and a driving unit U2, and magnetic isolation is implemented by using the transformer, so that smooth signal transmission can be ensured, and meanwhile, current or resistance connection between the output circuit and the input circuit is cut off, and the transformer is an optimized scheme based on improvement of transmission efficiency and reduction of power consumption, and has power consumption as low as one tenth of that of a conventional optocoupler, small volume, convenient application, high reliability, and long service life; meanwhile, the DC blocking capacitor C4 is used for blocking DC to ensure the stable output signal of the transformer.
In this embodiment, as shown in fig. 1, the power supply is directly connected to the power supply loop of the photovoltaic power generation unit, and the photovoltaic power generation unit is used for supplying power without being additionally connected to the power supply, so that the service life is long, and the installation is convenient.
In this embodiment, the protection resistor R1 plays a role of current limiting, and avoids burning out components.
In this embodiment, as a connection manner between the controller U1 and each output module, the controller U1 is connected to each output module through a signal line, and the signal line is routed from the inside of each photovoltaic power generation unit.
In this embodiment, the signal line is walked from photovoltaic power generation unit inside, can reduce the risk of damage.
In this embodiment, as another connection manner between the controller U1 and each output module, the controller U1 is connected to each output module through a signal line, and the signal line can be routed from the outside of each photovoltaic power generation unit.
In this embodiment, the output modules are connected in series to a signal line, that is, the controller U1 controls the turn-off devices to synchronously perform an opening operation or a closing operation.
In the present embodiment, as shown in fig. 4 to 5, the thick lines are power lines and the thin lines are signal lines, and the amount of power lines used can be reduced, thereby reducing the manufacturing cost.
Example 2
On the basis of embodiment 1, this embodiment provides an intelligent photovoltaic module, and it includes: the photovoltaic power generation system comprises a plurality of photovoltaic power generation units, a plurality of switch boxes, a controller U1 and a plurality of driving components electrically connected with a controller U1; the output end of each photovoltaic power generation unit is connected with a corresponding switch box, and the switch boxes are sequentially connected in series; the controller U1 is arranged in one switch box, and the controller U1 is connected with a shutoff device in the switch box; each driving assembly is respectively arranged in the other switch boxes, and each driving assembly is respectively connected with the turn-off device in the corresponding switch box, that is, the controller U1 outputs a corresponding level signal to control the working state of the turn-off device connected with the controller U1, and drives the corresponding turn-off device to act by controlling each driving assembly.
In the embodiment, each switch box leads out a positive power line and a negative power line of a corresponding photovoltaic power generation unit; each shut-off device is arranged on a corresponding negative power line or a corresponding positive power line, and a corresponding bypass diode is arranged between the positive power line and the negative power line, namely, the positive power line of one switch box is connected with the negative power line of the other switch box.
In the embodiment, the total bypass diode is not required to be arranged, and the power line is not required to be additionally connected from the total anode or the total cathode, so that the production cost can be further reduced.
In this embodiment, the driving assembly includes: the output module is electrically connected with the controller U1; the output modules are arranged in the corresponding switch boxes and are connected with the corresponding turn-off devices; when the output module receives the corresponding level signal output by the controller U1, the corresponding level signal is output to the corresponding switch, that is, the corresponding switch is controlled to perform an opening action or a closing action.
In this embodiment, the controller U1 is connected to each output module through a signal line, and the signal line is routed from inside each photovoltaic power generation unit; the output modules are connected in series on a signal line, that is, the controller U1 controls the turn-off devices to synchronously perform an opening action or a closing action.
In this embodiment, as an optional implementation manner, the photovoltaic power generation unit PV1, the photovoltaic power generation unit PV2, and the photovoltaic power generation unit PV3 are provided, and output is performed through a three-part junction box, the controller U1 is provided in the negative switch box, and the bypass diode D1, the bypass diode D2, the bypass diode D3, and the corresponding driving components are respectively provided in the negative switch box, the middle switch box, and the positive switch box, so as to implement a fast turn-off function, so that the photovoltaic power generation unit PV1, the photovoltaic power generation unit PV2, and the photovoltaic power generation unit PV3 can safely output, and meanwhile, the controller U1 can perform signal sampling and processing on a power carrier signal through a signal sampling circuit, thereby implementing an automatic turn-off function.
Example 3
On the basis of the foregoing embodiments, the present embodiment provides a shutdown method, which includes: connecting the output end of each photovoltaic power generation unit with a corresponding switch box so as to sequentially connect the switch boxes in series; the controller U1 is disposed in one of the switch boxes such that the controller U1 is connected to the shutdown device in that switch box; respectively arranging each driving assembly in the other switch boxes so that each driving assembly is respectively connected with the turn-off device in the corresponding switch box; the controller U1 outputs corresponding level signals to control the working state of the shut-off device connected with the controller U1, and drives the corresponding shut-off device to act by controlling each driving component.
In this embodiment, the intelligent photovoltaic module provided in embodiment 2 is suitable for operation.
In summary, the controller controls each driving component to drive the shutdown device to work, so that the output of the photovoltaic power generation unit can be rapidly shut off, and meanwhile, the control board is connected with each driving component through the signal line, so that the cost is low, the communication effect is good, the signal line can be wired from the inside of the photovoltaic power generation unit, and the risk of damage is reduced.
The components selected for use in the present application (components not illustrated for specific structures) are all common standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experimentation.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A quick turn-off device for photovoltaic power generation, characterized by comprising:
the controller and a plurality of driving components are electrically connected with the controller; wherein
The output end of each photovoltaic power generation unit is connected with a corresponding switch box, and the switch boxes are sequentially connected in series;
the controller is arranged in one of the switch boxes and is connected with the breaker in the switch box;
each of the drive assemblies is arranged in the rest of the switch boxes, and each of the drive assemblies is connected with the breaker in the corresponding switch box, that is
The controller outputs corresponding level signals to control the working state of the shut-off device connected with the controller, and drives the corresponding shut-off device to act by controlling each driving component.
2. The fast turn-off device for photovoltaic power generation as claimed in claim 1,
the drive assembly includes: the output module is electrically connected with the controller;
the output modules are arranged in the corresponding switch boxes and are connected with the corresponding turn-off devices;
when the output module receives the corresponding level signal output by the controller and outputs the level signal to the corresponding cut-off device, namely
And controlling the corresponding turn-off device to execute an opening action or a closing action.
3. The rapid turn-off device for photovoltaic power generation as claimed in claim 2,
the controller is connected with each output module through a signal wire, and the signal wire is wired from the inside of each photovoltaic power generation unit.
4. The fast turn-off device for photovoltaic power generation as claimed in claim 3,
each of the output modules is connected in series to a signal line, i.e.
The controller controls the turn-off devices to synchronously execute opening action or closing action.
5. An intelligent photovoltaic module, comprising:
the photovoltaic power generation system comprises a plurality of photovoltaic power generation units, a plurality of switch boxes, a controller and a plurality of driving components electrically connected with the controller; wherein
The output end of each photovoltaic power generation unit is connected with a corresponding switch box, and the switch boxes are sequentially connected in series;
the controller is arranged in one of the switch boxes and is connected with the breaker in the switch box;
each of the driving assemblies is respectively arranged in the other switch boxes, and each of the driving assemblies is respectively connected with the turn-off device in the corresponding switch box, namely
The controller outputs corresponding level signals to control the working state of the shut-off device connected with the controller, and drives the corresponding shut-off device to act by controlling each driving component.
6. The intelligent photovoltaic module of claim 5,
each switch box leads out a positive power line and a negative power line of the corresponding photovoltaic power generation unit;
each of the turn-off devices is arranged on the corresponding negative power line or the corresponding positive power line, and a corresponding bypass diode is arranged between the positive power line and the negative power line, namely
And the positive power line of one switch box is connected with the negative power line of the other switch box.
7. The intelligent photovoltaic module of claim 6,
the drive assembly includes: the output module is electrically connected with the controller;
the output modules are arranged in the corresponding switch boxes and are connected with the corresponding turn-off devices;
when the output module receives the corresponding level signal output by the controller and outputs the level signal to the corresponding cut-off device, namely
And controlling the corresponding turn-off device to execute an opening action or a closing action.
8. The intelligent photovoltaic module of claim 7,
the controller is connected with each output module through a signal wire, and the signal wire is wired from the inside of each photovoltaic power generation unit;
each of the output modules is connected in series to a signal line, i.e.
The controller controls the turn-off devices to synchronously execute opening action or closing action.
9. A shutdown method, comprising:
connecting the output end of each photovoltaic power generation unit with a corresponding switch box so as to sequentially connect the switch boxes in series;
arranging a controller in one of the switch boxes so that the controller is connected with a shutoff device in the switch box;
respectively arranging each driving assembly in the other switch boxes so that each driving assembly is respectively connected with the turn-off device in the corresponding switch box;
the controller outputs corresponding level signals to control the working state of the shut-off device connected with the controller, and each driving component is controlled to drive the corresponding shut-off device to act.
10. A shutdown method according to claim 9,
adapted to work with the intelligent photovoltaic module of any of claims 5-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210375332.2A CN114583699A (en) | 2022-04-11 | 2022-04-11 | Rapid turn-off device for photovoltaic power generation, intelligent photovoltaic module and turn-off method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210375332.2A CN114583699A (en) | 2022-04-11 | 2022-04-11 | Rapid turn-off device for photovoltaic power generation, intelligent photovoltaic module and turn-off method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116388131A (en) * | 2023-05-26 | 2023-07-04 | 阳光电源股份有限公司 | Photovoltaic power generation system, fault protection method and device thereof, combiner box and inverter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116388131A (en) * | 2023-05-26 | 2023-07-04 | 阳光电源股份有限公司 | Photovoltaic power generation system, fault protection method and device thereof, combiner box and inverter |
| CN116388131B (en) * | 2023-05-26 | 2023-08-11 | 阳光电源股份有限公司 | Photovoltaic power generation system, fault protection method and device thereof, combiner box and inverter |
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