CN207543063U - Multicompartment grade Quick shut-off device and photovoltaic system - Google Patents
Multicompartment grade Quick shut-off device and photovoltaic system Download PDFInfo
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- CN207543063U CN207543063U CN201721225093.3U CN201721225093U CN207543063U CN 207543063 U CN207543063 U CN 207543063U CN 201721225093 U CN201721225093 U CN 201721225093U CN 207543063 U CN207543063 U CN 207543063U
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- 238000004891 communication Methods 0.000 claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 238000005070 sampling Methods 0.000 claims description 8
- 230000005284 excitation Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 2
- 238000010248 power generation Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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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
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The utility model discloses a kind of multicompartment grade Quick shut-off devices, and photovoltaic module string connected to it is controlled in photovoltaic system, and the photovoltaic module string includes multiple photovoltaic modulies being cascaded；The multicompartment grade Quick shut-off device includes microcontroller, communication unit, driving circuit, accessory power supply, switch unit and output bypass diode；Microcontroller is communicated with communication unit and controls driving circuit, communication unit is used for transmission shutdown and provisioning instruction, driving circuit receives micro-controller instructions so as to which driving switch unit turns off and opens photovoltaic module string, all photovoltaic modulies when opening in photovoltaic component string are accessory power supply power supply, so as to balance power supply of all photovoltaic modulies to accessory power supply, generated energy is improved.
Description
Technical field
Multicompartment grade the present invention relates to technical field of photovoltaic power generation more particularly to a kind of novel power supply mode of band is quickly closed
Disconnected device and photovoltaic system.
Background technology
Solar energy is not only resourceful, environmentally safe as a kind of low-carbon regenerative resource, and is that the mankind can
The energy freely utilized, therefore solar energy becomes the focus of people's attention with its exclusive advantage.Photovoltaic generation is as solar energy
Widest application obtains being widelyd popularize in the society of Xinjin, and installation increases year by year.Distributed photovoltaic power generation system is
Refer at user scene or close to the smaller photovoltaic generating system of electricity consumption situ configuration, to meet the needs of specific user, support existing
Requirement in terms of depositing the economical operation of power distribution network or meeting the two simultaneously.
Distributed photovoltaic power generation system may be generally mounted on building roof, but since photovoltaic generating system is as a kind of
Always with the presence of electric current in charging equipment, equipment and circuit.When fire occurs for building, due to the presence of electric current, can influence to disappear
Anti- personnel sue and labour in time.With the continuous expansion of photovoltaic industry, the probability that accident occurs also is being continuously increased.At the same time, it is right
Photovoltaic generating system carries out the side that the intellectualized operations such as the monitoring of intelligence, control access and disconnection are also current industry development
To and trend.Therefore in order to improve the safety of photovoltaic system, photovoltaic system is proposed in NEC2017 (U.S.'s electrician's bill 2017)
Rapidly switch off the requirement of (RS, Rapid Shutdown).Existing Quick shut-off device is that each photovoltaic module will access one
A Quick shut-off device, cost are higher.In normal power generation, the switch of the corresponding multiple Quick shut-off devices of multiple photovoltaic modulies
Series relationship can be formed, larger conduction loss is generated, influences generating efficiency.
In addition, the power supply mode in existing component level Quick shut-off device uses first component of negative terminal to accessory power supply
Power supply, such Power Supply Assembly one part of current more than other components in same string formation consumes, so as to which this component is into the group
The power generation bottleneck of string, particularly in the morning, at dusk, cloudy day, sleet and block wait dim lights in the case of, the component of power supply can be brought
Entire string formation stops generating electricity in advance, and then affect the generated energy of system.
In view of this, it is necessory to propose a kind of novel power supply mode of suitable multicompartment grade Quick shut-off device, with solution
The certainly above problem.
Invention content
The purpose of the present invention is to provide a kind of multicompartment grade Quick shut-off device of the novel power supply mode of band and photovoltaic systems
System so that each photovoltaic module is powered during power generation to accessory power supply, balances confession of all photovoltaic modulies to accessory power supply
Electricity improves generated energy.
For achieving the above object, the present invention provides a kind of multicompartment grade Quick shut-off device, used in photovoltaic system
Middle control photovoltaic module string connected to it, the photovoltaic module string include at least two photovoltaic modulies being cascaded；Institute
It states multicompartment grade Quick shut-off device and includes microcontroller, communication unit, driving circuit, accessory power supply, switch unit and output
Bypass diode；The microcontroller is communicated with communication unit and controls driving circuit, and the communication unit is used for transmission
Shutdown instruction, the driving circuit receives micro-controller instructions so as to which driving switch unit turns off photovoltaic module string, when being not turned off
All photovoltaic modulies in photovoltaic module string are accessory power supply power supply.
As a further improvement on the present invention, the multicompartment grade Quick shut-off device includes first for electric diode and the
Two supply electric diode；First connects the anode of the photovoltaic module string for electric diode one end, other end connection accessory power supply
Input terminal；Second connects the anode of first photovoltaic module of the photovoltaic module string negative terminal for electric diode one end, and the other end connects
Connect the input terminal of accessory power supply.
As a further improvement on the present invention, the switch unit includes at least two switches, the switch and the light
The photovoltaic module of volt component string is corresponded and is connected in the circuit of corresponding photovoltaic module access series circuit, the switch
In the negative terminal access of corresponding photovoltaic module or in the anode access of corresponding photovoltaic module.
As a further improvement on the present invention, the multicompartment grade Quick shut-off device further comprises connecting with microcontroller
The sampling unit connect, the sampling unit are used to sample the voltage of photovoltaic module and temperature data and send it to microcontroller
Device.
As a further improvement on the present invention, the initial and end end of the output bypass diode is attempted by photovoltaic module string
Positive and negative terminal；The switch is one kind in MOSFET, IGBT or relay；The accessory power supply uses circuit of reversed excitation；It is described logical
It is direct current PLC or communication to believe unit
The present invention also provides another multicompartment grade Quick shut-off devices, are controlled in photovoltaic system connected to it
Photovoltaic module string, the photovoltaic module string include at least two photovoltaic modulies being cascaded；The multicompartment grade is quickly closed
Disconnected device includes control unit, communication unit, accessory power supply, switch unit and output bypass diode；The communication unit is used
In transmission shutdown instruction to control unit, described control unit control switch unit is switched on or off each photovoltaic module, described to open
It is that accessory power supply is powered to close all photovoltaic modulies when unit is opened in photovoltaic component string, photovoltaic module when switch unit turns off
A photovoltaic module in string is powered for accessory power supply.
As a further improvement on the present invention, the multicompartment grade Quick shut-off device includes first for electric diode and the
Two supply electric diode；Described first connects the anode of the photovoltaic module string, other end connection auxiliary electricity for electric diode one end
The input terminal in source；Described second connects the anode of first photovoltaic module of the photovoltaic module string negative terminal for electric diode one end,
The other end connects the input terminal of accessory power supply；All photovoltaic modulies are accessory power supply jointly for electric diode by first when opening
Power supply, during shutdown described first photovoltaic module of photovoltaic module string negative terminal by second for power supply being helped to power supplemented by electric diode.
As a further improvement on the present invention, the switch unit includes at least two switches, the switch and the light
The photovoltaic module of volt component string is corresponded and is connected in the circuit of corresponding photovoltaic module access series circuit, the switch
In the negative terminal access of corresponding photovoltaic module or in the anode access of corresponding photovoltaic module.
The present invention also provides a kind of photovoltaic system, the photovoltaic system rapidly switches off dress including aforementioned multicompartment grade
It puts, corresponding with multicompartment grade Quick shut-off device at least a photovoltaic module string, gateway and inverter, multicompartment grade rapidly switch off
The input terminal of device connects with photovoltaic module series winding, the output terminal of multicompartment grade Quick shut-off device and the input terminal phase of inverter
Even, gateway is used to send out instruction to multicompartment grade Quick shut-off device, and multicompartment grade Quick shut-off device is according to instruction shutdown pair
The photovoltaic module string answered.
As a further improvement on the present invention, the photovoltaic system, which further includes, is connected between the inverter and power grid
Air switch, the gateway are integrated in inverter.
The beneficial effects of the present invention are：It is equipped in the photovoltaic module string of the multicompartment grade Quick shut-off device of the present invention
Each photovoltaic module can power during power generation to accessory power supply so that the energy water consumption of multicompartment grade Quick shut-off device
It is flat to reach mean consumption, the generation of bottleneck is prevented, meanwhile, this power supply mode is to morning, dusk, cloudy day, sleet and screening
The power generation of the dim lights situations such as gear, which plays optimization well, to be improved, and then improve the generated energy of system.
Description of the drawings
Fig. 1 is the schematic diagram of the multicompartment grade cutoff device embodiment one of the novel power supply mode of band provided by the invention.
Fig. 2 is the schematic diagram of the multicompartment grade cutoff device embodiment two of the novel power supply mode of band provided by the invention.
Fig. 3 is the schematic diagram of double component level cutoff devices of the novel power supply mode of band provided by the invention.
Fig. 4 is the schematic diagram of photovoltaic system provided by the invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, it is right in the following with reference to the drawings and specific embodiments
The present invention is described in detail.
Refering to Figure 1, the schematic diagram for multicompartment grade Quick shut-off device embodiment one provided by the invention.This reality
The multicompartment grade Quick shut-off device of example offer is applied in photovoltaic generating system, controlling photovoltaic module string connected to it.Institute
It states photovoltaic module string and includes multiple photovoltaic module 101- photovoltaic modulies 10n being cascaded.The multicompartment grade rapidly switches off
Device includes control unit, communication unit 201, accessory power supply 202, switch unit, sampling unit 203 and output bypass diode
D1.The switch unit includes multiple switch Q1-Qn.
The multicompartment grade Quick shut-off device further includes first for electric diode D2 and second for electric diode D3.It is described
First connects the anode of photovoltaic module string for electric diode D2 one end, and the other end connects the input terminal of accessory power supply 202；Described
Two connect the anode of first photovoltaic module 101 of the negative terminal in photovoltaic module string, other end connection for electric diode D3 one end
The input terminal of accessory power supply 202.
Described control unit includes microcontroller (MCU) 204 and driving circuit 205.Microcontroller 204 is controlled as center
Center processed, communicated with communication unit 201 and by driving circuit 205 control switch unit shutdown with it is open-minded.Driving
Circuit 205 is connect respectively with switch Q1-Qn, according to the instruction of microcontroller 204, by control signal amplification, and then controls switch
Each switch Q1-Qn of unit is switched on or off.
The communication unit 201 is used to receive the instruction of external i.e. gateway (Gateway) transmission, and instruction is passed to micro-
Controller 204.Plc communication or wireless communication can be used in the communication unit 201.It, can be by being multiplexed direct current mother when using PLC
Line cable carries out direct current carrier communication with gateway.During using communication, wireless communication unit 201 with it is wireless in gateway
Transmit-Receive Unit carries out wireless communication, and the shutdown received and provisioning instruction are passed to microcontroller.Wireless communication unit can be adopted
With modes such as wireless Zigbee, RF.
The sampling unit 203 can carry out real-time sampling, wherein voltage to the voltage and temperature of each photovoltaic module
Measurement electric resistance partial pressure mode or differential mode can be used, then need to send related data according to system by communication unit 201
To gateway.
Further, the switch Q1-Qn is connected with the photovoltaic module 101-10n one-to-one correspondence in photovoltaic module string, and
It is connected in the circuit of the series circuit of photovoltaic module string formation.The switch unit according to instruction, the shutdown of executive module grade with
Open-minded, further, the switch Q1-Qn can be MOSFET, IGBT or relay etc..
The switch Q1-Qn accesses the negative terminal in corresponding photovoltaic module 101-10n, that is, switchs Q1 accesses in correspondence
Between the negative terminal of photovoltaic module 101 and the negative terminal of photovoltaic module string, switch Q2 accesses are in the negative terminal and light of corresponding photovoltaic module 102
Between the anode for lying prostrate component 101, negative terminal and with photovoltaic module 10n adjacent light of the switch Qn accesses in corresponding photovoltaic module 10n
Between the anode for lying prostrate component (not shown), specifically, in the present embodiment in addition to the corresponding switch Q1 of power supply photovoltaic module 101,
Rest switch Q2-Qn is light-coupled isolation driving.
During normal work, when the switch Q1-Qn conductings, each photovoltaic module 101- 10n output electricity of photovoltaic module string
Energy；When encountering emergency, when the microcontroller 204 sends out shutdown instruction, all switch Q1-Qn are disconnected, each photovoltaic
Component 101-10n mutually opens a way, and the voltage exported at this time is 0.It should be noted that the switch Q1- disclosed in the present embodiment
The working condition of Qn is identical, that is, when working normally, all switches are all open-minded；During emergency, all switches are turned off.
The initial and end end of the output bypass diode D1 is attempted by the positive and negative terminal of photovoltaic module string.With two or more
In the photovoltaic system of multicompartment grade Quick shut-off device, wherein during the failure of multicompartment grade Quick shut-off device, string formation
Electric current can form access by exporting bypass diode D1, and it is fast that the cutoff device to fail in this way does not interfere with other multicompartment grades
The normal output of the corresponding photovoltaic module string of fast cutoff device.
The accessory power supply 202 is powered by photovoltaic module 101, and during system normal power generation, switch Q1-Qn is open-minded, connection
All photovoltaic module 101-10n of the multicompartment grade Quick shut-off device are supplied after the switch series connection in device, then through first
Electric diode D2 provides energy to accessory power supply, therefore all photovoltaic modulies of photovoltaic module string are all powered for accessory power supply 202,
These photovoltaic modulies are supplied to the energy of accessory power supply to be almost equal.Accessory power supply uses circuit of reversed excitation.System occurs tight
During anxious situation, Quick shut-off device turns off all switch Q1-Qn successively after receiving instruction, during this period all photovoltaic modulies
101- 10n no longer transmit energy to photovoltaic system, and accessory power supply is only by photovoltaic module 101 through the second two poles of power supply at this time
Pipe D3 powers.Due to 202 electricity consumption very little of accessory power supply, and the energy of photovoltaic module 101 is provided only to accessory power supply 202 at this time,
So it can meet completely.
It please join shown in Fig. 2, the multicompartment grade Quick shut-off device provided when turning off mode using anode for the present invention shows
It is intended to, with the operation logic phase of multicompartment grade Quick shut-off device shown in FIG. 1 controlled using component negative terminal shutdown mode
Seemingly.
Wherein, the multicompartment grade Quick shut-off device includes control unit, communication unit 201, accessory power supply 202, opens
Close unit, sampling unit 203 and output bypass diode D1.
The switch unit includes multiple switch Q1-Qn.Each switch Q1-Qn of switch unit is accessed in corresponding photovoltaic
The anode of component 101-10n.Wherein switch Q1 accesses corresponding photovoltaic module 101 anode and photovoltaic module 102 negative terminal it
Between, switch Q2 accesses are in the anode of corresponding photovoltaic module 102 and between the negative terminal of photovoltaic module 103, and switch Qn accesses are right
It answers between the anode of photovoltaic module 10n and the anode of photovoltaic module string.It is that light-coupled isolation is driven that Q1-Qn is switched in the present embodiment
It is dynamic.
During normal work, when the switch Q1-Qn conductings, each photovoltaic module 101- 10n output electricity of photovoltaic module string
Energy；When encountering emergency, when the microcontroller 204 sends out shutdown instruction, all switches disconnect, each photovoltaic module
101-10n mutually opens a way, and the voltage exported at this time is 0.Specifically, shape is switched when switch Q1-Qn is in identical working environment
State is identical, that is, when working normally, all switches are all open-minded；During emergency, all switches are turned off.
It please refers to shown in Fig. 3, is a kind of schematic diagram of double component level Quick shut-off devices provided by the invention.The present embodiment
In the corresponding photovoltaic module string of double component level Quick shut-off device include two photovoltaic modulies 101,102.Q1 accesses are switched in light
It lies prostrate between the negative terminal of component 101 and the negative terminal of photovoltaic module string, switch Q2 accesses are in the negative terminal of photovoltaic module 102 and photovoltaic group
Between the anode of part 101, further, in the present embodiment switch Q2 and driven for light-coupled isolation.
It please refers to shown in Fig. 4, is photovoltaic system schematic diagram provided by the invention.Photovoltaic system provided in this embodiment includes
Multiple double component level Quick shut-off devices 200, with double 200 corresponding multiple photovoltaic module strings of component level Quick shut-off device, net
Close 300, inverter 400 and air switch 500.Input terminal and corresponding photovoltaic per a pair of component level Quick shut-off device 200
Component string connects, and the output terminal of each double component level Quick shut-off devices 200, which is cascaded, connects the input terminal of inverter 400.
It is understood that when photovoltaic system only include a multicompartment grade Quick shut-off device when, the output terminal of the cutoff device with
The input terminal connection of inverter 400.
The gateway 300 is used to send out instruction, double component level Quick shut-off devices to double component level Quick shut-off devices 200
200 turn off corresponding photovoltaic module string according to instruction.Air switch 500 is connected between 400 inverters and power grid 600.It can be with
Understand, gateway 300 may alternatively be integrated in inverter 400.
With reference to Fig. 3 and Fig. 4, the course of work of photovoltaic system is further illustrated.When initial, double component levels are quick
For cutoff device 200 without output, gateway 300 carries out ad hoc network after the power is turned on, and provisioning instruction is sent after the completion of networking.Double component levels are quick
After cutoff device 200 receives provisioning instruction, Q1, Q2 are turned on the switch respectively, and photovoltaic module 101-110 is normally exported, inverter
400 work.Each photovoltaic module 101,102 after connecting in per a pair of component level Quick shut-off device is through first for electric diode D2
Jointly energy is provided for accessory power supply.Under normal conditions, double component level Quick shut-off device timings upload voltage, temperature and failure
Etc. information.
Under emergency, shutdown air switch 500 is automatically shut down, and gateway 300 detects that power grid 600 is lost, and sends immediately
Shutdown instruction.After each double component level Quick shut-off devices 200 receive shutdown instruction, switch Q1, Q2 are immediately turned off.Emergency
After releasing, air switch 500 is closed, and gateway 300 sends provisioning instruction.Double component level Quick shut-off devices 200 receive open-minded
After instruction, switch Q1, Q2 are opened respectively, and photovoltaic system works normally again.
Other multicompartment grades are quickly closed only by taking double component level Quick shut-off devices 200 as an example description above part
Disconnected device operation principle is identical, and details are not described herein.
In conclusion multicompartment grade Quick shut-off device provided by the invention, only with a Quick shut-off device
Control the shutdown of multiple photovoltaic modulies, it is not necessary to as each photovoltaic module of the prior art is required to a corresponding cutoff device,
Therefore, cutoff device quantity is reduced, and reduces cost；And the energy of photovoltaic module normal work is also reduced to a certain extent
Amount consumption.Each photovoltaic module in entire photovoltaic module string is powered during power generation to accessory power supply, reaches mean consumption,
Without bottleneck, thus this power supply mode is to morning, dusk, cloudy day, sleet and blocks the power generation of dim lights situation is waited to play
Optimization improves well, and then improves the generated energy of system
The above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to preferred embodiment to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that, it can modify to technical scheme of the present invention
Or equivalent replacement, without departing from the spirit and scope of technical solution of the present invention.
Claims (10)
1. a kind of multicompartment grade Quick shut-off device controls photovoltaic module string connected to it, the light in photovoltaic system
It lies prostrate component string and includes at least two photovoltaic modulies being cascaded；It is characterized in that：The multicompartment grade Quick shut-off device
Including microcontroller, communication unit, driving circuit, accessory power supply, switch unit and output bypass diode；The microcontroller
It is communicated with communication unit and controls driving circuit, the communication unit is used for transmission shutdown and provisioning instruction, the driving
Circuit receives micro-controller instructions so as to which driving switch unit turns off and opens photovoltaic module string, when opening in photovoltaic component string
All photovoltaic modulies are accessory power supply power supply.
2. multicompartment grade Quick shut-off device according to claim 1, it is characterised in that：The multicompartment grade rapidly switches off
Device includes first and supplies electric diode for electric diode and second；First connects the photovoltaic module string for electric diode one end
Anode, the other end connect the input terminal of accessory power supply；Second connects the photovoltaic module string negative terminal first for electric diode one end
The anode of a photovoltaic module, the other end connect the input terminal of accessory power supply.
3. multicompartment grade Quick shut-off device according to claim 1, it is characterised in that：The switch unit is included at least
Two switches, the switch correspond with the photovoltaic module of the photovoltaic module string and are connected to corresponding photovoltaic module and access
In the circuit of series circuit, the switch is in the negative terminal access of corresponding photovoltaic module or in the positive termination of corresponding photovoltaic module
Enter.
4. multicompartment grade Quick shut-off device according to claim 1, it is characterised in that：The multicompartment grade rapidly switches off
Device includes the sampling unit being connect with microcontroller, and the sampling unit is used to sample the voltage and temperature data of photovoltaic module
And send it to microcontroller.
5. multicompartment grade Quick shut-off device according to claim 1, it is characterised in that：The output bypass diode
Initial and end end is attempted by the positive and negative terminal of photovoltaic module string；The switch is one kind in MOSFET, IGBT or relay；It is described auxiliary
Power supply is helped to use circuit of reversed excitation；The communication unit is direct current PLC or communication.
6. a kind of multicompartment grade Quick shut-off device controls photovoltaic module string connected to it, the light in photovoltaic system
It lies prostrate component string and includes at least two photovoltaic modulies being cascaded；It is characterized in that：The multicompartment grade Quick shut-off device
Including control unit, communication unit, accessory power supply, switch unit and output bypass diode；Communication unit is used for transmission shutdown
With provisioning instruction to control unit, described control unit control switch unit is switched on or off each photovoltaic group of photovoltaic module string
Part, all photovoltaic modulies when switch unit is opened in photovoltaic component string are accessory power supply power supply, and switch unit turns off the time
The photovoltaic module lied prostrate in component string is powered for accessory power supply.
7. multicompartment grade Quick shut-off device according to claim 6, it is characterised in that：The multicompartment grade rapidly switches off
Device includes first and supplies electric diode for electric diode and second；First connects the photovoltaic module string for electric diode one end
Anode, the other end connect the input terminal of accessory power supply；Second connects the photovoltaic module string negative terminal first for electric diode one end
The anode of a photovoltaic module, the other end connect the input terminal of accessory power supply；All photovoltaic modulies pass through the first power supply two when opening
Pole pipe is powered jointly for accessory power supply, and described first photovoltaic module of photovoltaic module string negative terminal passes through the second two poles of power supply during shutdown
It manages and powers for accessory power supply.
8. multicompartment grade Quick shut-off device according to claim 6, it is characterised in that：The switch unit is included at least
Two switches, the switch correspond with the photovoltaic module of the photovoltaic module string and are connected to corresponding photovoltaic module and access
In the circuit of series circuit, the switch is in the negative terminal access of corresponding photovoltaic module or in the positive termination of corresponding photovoltaic module
Enter.
9. a kind of photovoltaic system, it is characterised in that:The photovoltaic system is included described at least one claim 1-8 any one
Multicompartment grade Quick shut-off device, an at least photovoltaic module string corresponding with multicompartment grade Quick shut-off device, gateway and inverse
Become device, input terminal and the photovoltaic module series winding of multicompartment grade Quick shut-off device connect, the output of multicompartment grade Quick shut-off device
End is connected with the input terminal of inverter, and gateway is used to send out instruction to multicompartment grade Quick shut-off device, and multicompartment grade is quickly closed
Disconnected device turns off photovoltaic module string corresponding with opening according to instruction.
10. photovoltaic system according to claim 9, it is characterised in that：The photovoltaic system includes being connected to the inversion
Air switch between device and power grid, the gateway can be used as external autonomous device, can also be integrated into the inverter.
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| CN201721225093.3U CN207543063U (en) | 2017-09-22 | 2017-09-22 | Multicompartment grade Quick shut-off device and photovoltaic system |
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| CN201721225093.3U CN207543063U (en) | 2017-09-22 | 2017-09-22 | Multicompartment grade Quick shut-off device and photovoltaic system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109066798A (en) * | 2018-09-17 | 2018-12-21 | 阳光电源股份有限公司 | A kind of cutoff device of photovoltaic module |
| CN109245713A (en) * | 2018-11-15 | 2019-01-18 | 上海谦牧信息技术有限公司 | A kind of tandem component level photovoltaic turning off system |
| CN109546959A (en) * | 2017-09-22 | 2019-03-29 | 阿特斯阳光电力集团有限公司 | Multicomponent grade Quick shut-off device and photovoltaic system |
| CN110649645A (en) * | 2018-06-27 | 2020-01-03 | 台达电子工业股份有限公司 | Quick turn-off device and photovoltaic power generation system suitable for same |
| CN110729751A (en) * | 2018-07-16 | 2020-01-24 | 浙江英达威芯电子有限公司 | Direct current component shutoff device |
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