CN109546959A - Multicomponent grade Quick shut-off device and photovoltaic system - Google Patents
Multicomponent grade Quick shut-off device and photovoltaic system Download PDFInfo
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- CN109546959A CN109546959A CN201710868054.3A CN201710868054A CN109546959A CN 109546959 A CN109546959 A CN 109546959A CN 201710868054 A CN201710868054 A CN 201710868054A CN 109546959 A CN109546959 A CN 109546959A
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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 13
- 238000010586 diagram Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 6
- 238000002955 isolation Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 208000033748 Device issues Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring 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
- 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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- H02J3/383—
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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 invention discloses a kind of multicomponent 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 multicomponent 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 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, to balance power supply of all photovoltaic modulies to accessory power supply, generated energy is improved.
Description
Technical field
The present invention relates to the multicomponent grades of technical field of photovoltaic power generation more particularly to a kind of novel power supply mode of band quickly to close
Disconnected device and photovoltaic system.
Background technique
Solar energy is that the mankind can as a kind of low-carbon renewable energy, not only resourceful, no pollution to the environment
The energy freely utilized, therefore solar energy becomes the focus that people pay attention to its exclusive advantage.Photovoltaic power generation is as solar energy
It is most widely used in society now and is widelyd popularize, installation increases year by year.Distributed photovoltaic power generation system refers to
Existing match is supported close to the lesser photovoltaic generating system of electricity consumption situ configuration to meet the needs of specific user in user scene
The economical operation of power grid, or meet the requirement in terms of 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, it will affect and 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, right
Photovoltaic generating system carries out the side that the intelligent 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, higher cost.In normal power generation, the switch of the corresponding multiple Quick shut-off devices of multiple photovoltaic modulies
It will form series relationship, generate biggish conduction loss, influence generating efficiency.
In addition, the power supply mode in existing component level Quick shut-off device is using 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 group of string consumes, so that this component is at the group
The power generation bottleneck of string, especially in the morning, at dusk, the cloudy day, sleet and in the case of blocking equal dim lights, the component of power supply can be brought
Entire group string stops power generation in advance, and then affects the generated energy of system.
In view of this, the novel power supply mode it is necessory to propose a kind of suitable multicomponent grade Quick shut-off device, with solution
The certainly above problem.
Summary of the invention
The purpose of the present invention is to provide a kind of multicomponent grade Quick shut-off device of the novel power supply mode of band and photovoltaic systems
System balances confession of all photovoltaic modulies to accessory power supply so that each photovoltaic module is powered during power generation to accessory power supply
Electricity improves generated energy.
For achieving the above object, the present invention provides a kind of multicomponent grade Quick shut-off devices, are used in photovoltaic system
Middle control photovoltaic module string connected to it, the photovoltaic module string includes at least two photovoltaic modulies being cascaded；Institute
Stating multicomponent grade Quick shut-off device includes microcontroller, communication unit, driving circuit, accessory power supply, switch unit and output
Bypass diode；The microcontroller is communicated with communication unit and is controlled driving circuit, and the communication unit is used for transmission
Shutdown and provisioning instruction, the driving circuit receive micro-controller instructions 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.
As a further improvement of the present invention, the multicomponent grade Quick shut-off device includes first for electric diode and the
Two for electric diode；First connects the anode of the photovoltaic module string for electric diode one end, and the other end connects 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 of 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 route 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 of the present invention, the multicomponent 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 of 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 of MOSFET, IGBT or relay；The accessory power supply uses circuit of reversed excitation；It is described logical
Believe that unit is direct current PLC or communication
The present invention also provides another multicomponent grade Quick shut-off devices, control in photovoltaic system connected to it
Photovoltaic module string, the photovoltaic module string include at least two photovoltaic modulies being cascaded；The multicomponent 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 and provisioning instruction to control unit, described control unit control switch unit is switched on or off each photovoltaic module,
All photovoltaic modulies when the switch unit is opened in photovoltaic component string are accessory power supply power supply, and switch unit turns off the time
Lying prostrate a photovoltaic module in component string is auxiliary power supply power supply.
As a further improvement of the present invention, the multicomponent grade Quick shut-off device includes first for electric diode and the
Two for 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 input terminal of other end connection accessory power supply；All photovoltaic modulies are accessory power supply for electric diode by first jointly when opening
Power supply, when shutdown, described first photovoltaic module of photovoltaic module string negative terminal was by second for helping power supply power supply supplemented by electric diode.
As a further improvement of 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 route 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 includes that multicomponent grade above-mentioned rapidly switches off dress
It sets, corresponding with multicomponent grade Quick shut-off device at least a photovoltaic module string, gateway and inverter, multicomponent grade rapidly switch off
The input terminal of device connects with photovoltaic module series winding, the input terminal phase of the output end and inverter of multicomponent grade Quick shut-off device
Even, gateway be used for multicomponent grade Quick shut-off device issue instruct, multicomponent grade Quick shut-off device according to instruction shutdown with
Open corresponding photovoltaic module string.
As a further improvement of the present invention, the photovoltaic system further includes being connected between the inverter and power grid
Air switch, the gateway can be used as external autonomous device, also can be integrated into the inverter.
The beneficial effects of the present invention are: it is equipped in the photovoltaic module string of multicomponent grade Quick shut-off device of the invention
Each photovoltaic module can power to accessory power supply during power generation so that the energy water consumption of multicomponent 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 improves the generated energy of system.
Detailed description of the invention
Fig. 1 is the schematic diagram of the multicomponent 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 multicomponent 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, right in the following with reference to the drawings and specific embodiments
The present invention is described in detail.
Refering to Figure 1, being the schematic diagram of multicomponent grade Quick shut-off device embodiment one provided by the invention.This reality
The multicomponent grade Quick shut-off device of example offer is applied for controlling photovoltaic module string connected to it in photovoltaic generating system.Institute
Stating photovoltaic module string includes multiple photovoltaic module 101- photovoltaic module 10n being cascaded.The multicomponent 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 multicomponent grade Quick shut-off device further include first for electric diode D2 and second for electric diode D3.It is described
First connects the anode of photovoltaic module string for the one end electric diode D2, 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 the one end electric diode D3
The input terminal of accessory power supply 202.
Described control unit includes microcontroller (MCU) 204 and driving circuit 205.Microcontroller 204 is as center control
Center processed, communicated with communication unit 201 and by the shutdown of 205 control switch unit of driving circuit with it is open-minded.Driving
Circuit 205 is separately connected with switch Q1-Qn, according to the instruction of microcontroller 204, control signal is amplified, and then control 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 female by multiplexing direct current when using PLC
Line cable and gateway carry out direct current carrier communication.When 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 wireless Zigbee, the modes such as RF.
The sampling unit 203 can voltage to each photovoltaic module and temperature carry out real-time sampling, wherein voltage
Measurement can be used electric resistance partial pressure mode or differential mode, then by microcontroller 204 through communication unit 201 according to system need by
Related data is sent to gateway 300.
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 route 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, i.e. switch Q1 access is in corresponding light
It lies prostrate between the negative terminal of component 101 and the negative terminal of photovoltaic module string, negative terminal and photovoltaic of the switch Q2 access in corresponding photovoltaic module 102
Between the anode of component 101, negative terminal and with photovoltaic module 10n adjacent photovoltaic of the switch Qn access in corresponding photovoltaic module 10n
Between the anode of component (not shown), specifically, in the present embodiment in addition to the corresponding switch Q1 of photovoltaic module 101 that powers,
Remaining switch Q2- Qn is light-coupled isolation driving.
When normal work, when switch Q1-Qn conducting, each photovoltaic module 101- 10n of photovoltaic module string exports electricity
Energy；When encountering emergency, when the microcontroller 204 issues 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 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；When 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.There are two or more
In the photovoltaic system of multicomponent grade Quick shut-off device, in the wherein failure of a multicomponent grade Quick shut-off device, group string
Electric current can form access by output bypass diode D1, and it is fast that the cutoff device to fail in this way will not influence other multicomponent grades
The normal output of the corresponding photovoltaic module string of fast cutoff device.
For the accessory power supply 202 in system normal power generation, switch Q1-Qn is open-minded, and it is quick to connect the multicomponent grade
All photovoltaic module 101-10n of cutoff device give auxiliary for electric diode D2 after the switch series connection in device, then through first
Power supply provides energy, therefore all photovoltaic modulies of photovoltaic module string are all that accessory power supply 202 is powered, these photovoltaic modulies provide
Energy to accessory power supply is almost equal.Accessory power supply uses circuit of reversed excitation.When emergency occurs for system, rapidly switch off
Device successively turns off all switch Q1-Qn after receiving instruction, and all photovoltaic module 101-10n are no longer to photovoltaic during this period
System transmits energy, and accessory power supply is only powered through second for electric diode D3 by photovoltaic module 101 at this time.Due to accessory power supply
202 electricity consumption very littles, and the energy of photovoltaic module 101 is provided only to accessory power supply 202 at this time, so can satisfy completely.
It please join shown in Fig. 2, the multicomponent grade Quick shut-off device provided when turning off mode using anode for the present invention shows
It is intended to, the operation logic phase with the multicomponent grade Quick shut-off device shown in FIG. 1 controlled using component negative terminal shutdown mode
Seemingly.
Wherein, the multicomponent 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 access corresponding photovoltaic module 101 anode and photovoltaic module 102 negative terminal it
Between, in the anode of corresponding photovoltaic module 102 and between the negative terminal of photovoltaic module 103, switch Qn is accessed right for switch Q2 access
It answers between the anode of photovoltaic module 10n and the anode of photovoltaic module string.Switch Q1-Qn is that light-coupled isolation is driven in the present embodiment
It is dynamic.
When normal work, when the switch Q1-Qn is connected, each photovoltaic module 101-10n of photovoltaic module string exports electricity
Energy；When encountering emergency, when the microcontroller 204 issues shutdown instruction, all switches are disconnected, 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；When emergency, all switches are turned off.
It please refers to shown in Fig. 3, is a kind of schematic diagram of multicomponent grade Quick shut-off device provided by the invention.The present embodiment
The corresponding photovoltaic module string of middle multicomponent grade Quick shut-off device includes two photovoltaic modulies 101,102.Switch Q1 is accessed in light
It lies prostrate between the negative terminal of component 101 and the negative terminal of photovoltaic module string, switch Q2 accesses the negative terminal and photovoltaic group in photovoltaic module 102
Between the anode of part 101, further, switch Q2 is light-coupled isolation driving in the present embodiment.
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, multiple photovoltaic module strings corresponding with double component level Quick shut-off devices 200, net
Close 300, inverter 400 and air switch 500.The input terminal of every a pair of component level Quick shut-off device 200 and corresponding photovoltaic
Component string connection, the output end 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 includes a multicomponent grade Quick shut-off device, the output end of the cutoff device with
The input terminal of inverter 400 connects.
The gateway 300 is used to issue to double component level Quick shut-off devices 200 and instruct, double component level Quick shut-off devices
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 can be used as external autonomous device, also can be integrated into the inverter 400.
Below 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 powering 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 every a pair of component level Quick shut-off device is through first for electric diode D2
Energy is provided jointly for accessory power supply.Under normal conditions, double component level Quick shut-off device timings upload voltage, temperature and failure
Etc. information.
Under emergency, air switch 500 is turned off, gateway 300 detects that power grid 600 is lost, and sends shutdown instruction immediately.
After each double component level Quick shut-off devices 200 receive shutdown instruction, switch Q1, Q2 are immediately turned off.It is empty after emergency releases
Air cock 500 is closed, and gateway 300 sends provisioning instruction.After double component level Quick shut-off devices 200 receive provisioning instruction, point
Switch Q1, Q2 are not opened, and photovoltaic system works normally again.
Only by taking double component level Quick shut-off devices 200 as an example, other multicomponent grades are quickly closed above instructions part
Disconnected device working principle is identical, and details are not described herein.
In conclusion multicomponent 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 in the prior art is required to a corresponding cutoff device,
Therefore, cutoff device quantity is reduced, and is reduced costs；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, and mean consumption is reached,
Without bottleneck, thus this power supply mode plays morning, dusk, cloudy day, sleet and the power generation for blocking equal dim lights situation
Optimization improves well, and then improves the generated energy of system
The above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to preferred embodiment to this hair
It is bright to be described in detail, those skilled in the art should understand that, it can modify to technical solution of the present invention
Or equivalent replacement, without departing from the spirit and scope of the technical solution of the present invention.
Claims (10)
1. a kind of multicomponent grade Quick shut-off device controls photovoltaic module string connected to it, the light in photovoltaic system
Lying prostrate component string includes at least two photovoltaic modulies being cascaded；It is characterized by: the multicomponent grade Quick shut-off device
Including microcontroller, communication unit, driving circuit, accessory power supply, switch unit and output bypass diode；The microcontroller
Driving circuit is communicated and controlled with communication unit, and the communication unit is used for transmission shutdown and provisioning instruction, the driving
Circuit receives micro-controller instructions 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. multicomponent grade Quick shut-off device according to claim 1, it is characterised in that: the multicomponent grade rapidly switches off
Device include first for electric diode and second for electric diode；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. multicomponent grade Quick shut-off device according to claim 1, it is characterised in that: the switch unit includes 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 route 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. multicomponent grade Quick shut-off device according to claim 1, it is characterised in that: the multicomponent grade rapidly switches off
Device includes the sampling unit connecting with microcontroller, and the sampling unit is used to sample the voltage and temperature data of photovoltaic module
And send it to microcontroller.
5. multicomponent 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 of MOSFET, IGBT or relay；It is described auxiliary
Help power supply using circuit of reversed excitation；The communication unit is direct current PLC or communication.
6. a kind of multicomponent grade Quick shut-off device controls photovoltaic module string connected to it, the light in photovoltaic system
Lying prostrate component string includes at least two photovoltaic modulies being cascaded；It is characterized by: the multicomponent 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
Lying prostrate a photovoltaic module in component string is auxiliary power supply power supply.
7. multicomponent grade Quick shut-off device according to claim 6, it is characterised in that: the multicomponent grade rapidly switches off
Device include first for electric diode and second for electric diode；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 auxiliary power supply power supply jointly, and when shutdown, described first photovoltaic module of photovoltaic module string negative terminal passed through the second two poles of power supply
Pipe is auxiliary power supply power supply.
8. multicomponent grade Quick shut-off device according to claim 6, it is characterised in that: the switch unit includes 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 route 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 includes described at least one claim 1-8 any one
Multicomponent grade Quick shut-off device, an at least photovoltaic module string corresponding with multicomponent grade Quick shut-off device, gateway and inverse
Become device, input terminal and the photovoltaic module series winding of multicomponent grade Quick shut-off device connect, the output of multicomponent grade Quick shut-off device
End is connected with the input terminal of inverter, and gateway is used to issue to multicomponent grade Quick shut-off device and instruct, and multicomponent 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, also can be integrated into the inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710868054.3A CN109546959A (en) | 2017-09-22 | 2017-09-22 | Multicomponent grade Quick shut-off device and photovoltaic system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710868054.3A CN109546959A (en) | 2017-09-22 | 2017-09-22 | Multicomponent grade Quick shut-off device and photovoltaic system |
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| CN201710868054.3A Pending CN109546959A (en) | 2017-09-22 | 2017-09-22 | Multicomponent grade Quick shut-off device and photovoltaic system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110417347A (en) * | 2019-08-15 | 2019-11-05 | 海宁昱能电子有限公司 | It is a kind of for control photovoltaic module shutdown controller and control method |
| WO2021142905A1 (en) * | 2020-01-15 | 2021-07-22 | 浙江昱能科技有限公司 | Photovoltaic inverter |
| US11532935B2 (en) | 2020-03-09 | 2022-12-20 | Delta Electronics (Shanghai) Co., Ltd | Rapid shutdown device for photovoltaic system and control method thereof and protection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104167980A (en) * | 2014-08-28 | 2014-11-26 | 常州天合光能有限公司 | Photovoltaic system with intelligent shut-off function |
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| CN110417347A (en) * | 2019-08-15 | 2019-11-05 | 海宁昱能电子有限公司 | It is a kind of for control photovoltaic module shutdown controller and control method |
| CN110417347B (en) * | 2019-08-15 | 2022-02-18 | 浙江英达威芯电子有限公司 | Controller and control method for controlling turn-off of photovoltaic module |
| WO2021142905A1 (en) * | 2020-01-15 | 2021-07-22 | 浙江昱能科技有限公司 | Photovoltaic inverter |
| US11532935B2 (en) | 2020-03-09 | 2022-12-20 | Delta Electronics (Shanghai) Co., Ltd | Rapid shutdown device for photovoltaic system and control method thereof and protection system |
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