WO2019196096A1 - Appareil d'arrêt de réseau d'ensembles photovoltaïques - Google Patents

Appareil d'arrêt de réseau d'ensembles photovoltaïques Download PDF

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Publication number
WO2019196096A1
WO2019196096A1 PCT/CN2018/082979 CN2018082979W WO2019196096A1 WO 2019196096 A1 WO2019196096 A1 WO 2019196096A1 CN 2018082979 W CN2018082979 W CN 2018082979W WO 2019196096 A1 WO2019196096 A1 WO 2019196096A1
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WO
WIPO (PCT)
Prior art keywords
unit
transistor
photovoltaic module
circuit board
control circuit
Prior art date
Application number
PCT/CN2018/082979
Other languages
English (en)
Chinese (zh)
Inventor
周民
王忆诞
许琦彦
张为
Original Assignee
苏州谐通光伏科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 苏州谐通光伏科技股份有限公司 filed Critical 苏州谐通光伏科技股份有限公司
Priority to PCT/CN2018/082979 priority Critical patent/WO2019196096A1/fr
Priority to CN201880000843.8A priority patent/CN108886339A/zh
Publication of WO2019196096A1 publication Critical patent/WO2019196096A1/fr

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Classifications

    • 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
    • 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
    • H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02—Details
    • H01L31/02016—Circuit arrangements of general character for the devices
    • H01L31/02019—Circuit arrangements of general character for the devices for devices characterised by at least one potential jump barrier or surface barrier
    • H01L31/02021—Circuit arrangements of general character for the devices for devices characterised by at least one potential jump barrier or surface barrier for solar cells
    • 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
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
    • 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
    • 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

Definitions

  • the present invention relates to a photovoltaic module array shutdown system.
  • a photovoltaic cell is a device that directly converts solar radiation energy into electrical energy.
  • a photovoltaic component is a product that is connected and packaged by a plurality of photovoltaic cells, and is a basic unit of a battery array in a photovoltaic power generation system. When the PV module array fails, the grid needs to be turned off. However, the PV module is a power generation system. Each series unit has a high voltage, which poses a safety hazard to maintenance personnel. Therefore, it is necessary to provide a fast and intelligent shutdown system. It can automatically realize the fast and safe shutdown of each component in the system to ensure the safety of personnel.
  • the present invention provides a photovoltaic module array shut-off device for connecting or disconnecting a photovoltaic module under control of a shutdown controller, including a casing having a mounting cavity.
  • the mounting cavity is provided with a cover body, and the mounting cavity is provided with a control circuit board, and the box body is provided with a first connection end and a second connection end respectively electrically connected to the control circuit board
  • the first connection end is connected in series with a shutdown controller
  • the second connection end is connected in series with an adjacent photovoltaic component
  • the control circuit board comprises an interconnection main control unit, a controlled unit, and a power supply unit.
  • the interconnecting main control unit is connected to the first connecting end, and the interconnecting main control unit generates a main control signal under the action of the shutdown controller, the power supply The unit is connected to the controlled unit, and the controlled unit generates a controlled signal under the action of the main control signal, and the interconnecting switch unit is connected to the second connecting end, and the interconnecting switch The unit is in the controlled signal Communication or disconnected under the action.
  • the first connecting end and the second connecting end are fixedly disposed on the box body, or the first connecting end and the second connecting end are disposed on the box body through an extension line. .
  • the mounting cavity is provided with a bracket body
  • the control circuit board is mounted on the upper surface of the bracket body
  • the lower surface of the bracket body is provided with a high voltage plug sleeve and a low voltage plug sleeve.
  • One end of the low-voltage socket is deep into the first connection end, and the other end is connected to the corresponding contact of the lower surface of the control circuit board through the bracket body, and one end of the high-voltage socket penetrates into the second connection
  • the end and the other end are connected with a conductive sheet through the bracket body, and the conductive sheet is connected to a corresponding contact of the lower surface of the control circuit board.
  • the conductive sheet has a first connecting surface, an extending portion and a connecting pin
  • the high-voltage socket has a second connecting surface, and the first connecting surface and the second connecting surface are in close contact and pass the resistance welding Fixed connection.
  • the first connecting end is located inside the second connecting end.
  • the hook further comprises a hook, the inner end of the hook is connected to the bracket body, and the outer end of the hook is connected to the photovoltaic component.
  • the extension line of the first connection end and the second connection end are disposed in the casing, and the extension line is fastened by a line card located in the installation cavity, and the control circuit board has a soldering under the control circuit board. And a hole through which the extension end of the first connection end and the second connection end are soldered to the corresponding contacts on the lower surface of the control circuit board, and the sealing hole is mounted on the welding hole.
  • control circuit board has fixed wings at both ends, and the fixed wings are correspondingly inserted into the line card.
  • the interconnecting main control unit and the controlled unit are connected by a photoelectrically coupled switch, the optocoupler switch comprising a light emitting diode D and a photo-controlled phototransistor T;
  • the interconnecting switch unit includes a MOS field effect transistor, and a gate of the MOS field effect transistor is connected to the controlled unit;
  • the controlled unit includes:
  • the resistor R1 is connected to the collector of the phototransistor T;
  • the complementary push-pull circuit is connected to the power supply unit, and the complementary push-pull circuit comprises a transistor T2, a resistor R3, a transistor T3 and a resistor R4.
  • One of the transistor T2 and the transistor T3 is an NPN transistor and the other is a PNP type.
  • the triode, the triode T2, the base of the triode T3 are connected, the collectors are connected in parallel, the emitter is connected in parallel to the gate of the MOS field effect transistor to output a controlled signal, the resistor R3 is connected to the emitter of the triode T2, and the resistor R4 is connected.
  • the transistor T1 and the resistor R2 are connected to the power supply unit.
  • the base of the transistor T1 is connected to the collector of the phototransistor T, and the collector of the transistor T1 is connected to the base of the transistor T2 and the transistor T3.
  • the power supply unit comprises a power take-off input unit, a DC/DC converter, and a regulated output unit, wherein the power take-off input unit is connected to an output end of the photovoltaic module, and the regulated output unit is connected to the Controlled unit, wherein
  • the DC/DC converter has a VIN terminal, an EN terminal, a SW terminal, an FB terminal, a CB terminal, and a GND terminal, and the power take-off input unit includes a reverse-proof diode D1 connected to the VIN terminal and the EN terminal, and a filter capacitor C2. Filter capacitor C3;
  • the regulated output unit includes a storage inductor L1 connected to the SW end, a sampling resistor R11, a sampling resistor R12, a freewheeling diode D2, a filter capacitor C4, and a filter capacitor C5.
  • the FB terminal is connected to the sampling resistor R1 and the sampling resistor R2.
  • the bias capacitor C1 is connected between the CB terminal and the SW terminal.
  • the present invention can automatically realize fast and safe shutdown of each component in the system to ensure personnel safety.
  • FIG. 1 is a perspective view 1 of a first embodiment of a power supply unit of a photovoltaic module array shutdown device of the present invention
  • FIG. 2 is a perspective view 2 of a first embodiment of a power supply unit of a photovoltaic module array shutdown device of the present invention
  • FIG. 3 is a side view of a first embodiment of a power supply unit of a photovoltaic module array shutdown device of the present invention
  • FIG. 4 is a split view of a first embodiment of a power supply unit of a photovoltaic module array shutdown device of the present invention
  • FIG. 5 is a perspective view of a second embodiment of a power supply unit of a photovoltaic module array shutdown device of the present invention.
  • FIG. 6 is a split view of a second embodiment of a power supply unit of a photovoltaic module array shutdown device of the present invention.
  • FIG. 7 is a system frame diagram of Embodiment 1 of the photovoltaic module array shut-off device of the present invention.
  • Figure 8 is a circuit diagram of a photovoltaic module array shutdown device of the present invention.
  • Figure 9 is a circuit diagram of a power supply unit of a photovoltaic module array shutdown device of the present invention.
  • Figure 10 is a system frame diagram of a second embodiment of the photovoltaic module array shut-off device of the present invention.
  • FIG. 1 is a perspective view of a first embodiment of a power supply unit of a photovoltaic module array shutdown device of the present invention
  • FIG. 2 is a perspective view of a first embodiment of a power supply unit of a photovoltaic module array shutdown device of the present invention
  • 3 is a side view of the first embodiment of the power supply unit of the photovoltaic module array shut-off device of the present invention
  • FIG. 4 is a split view of the first embodiment of the power supply unit of the photovoltaic module array shut-off device of the present invention.
  • the photovoltaic module array shut-off device in the embodiment comprises a box body 1.
  • the box body 1 has a mounting cavity 2, and the mounting cavity 2 is provided with a cover body 3, and the edge of the cover body 3 is provided with a sealing ring 16 to ensure waterproof performance of the circuit. .
  • a control circuit board 4 is disposed in the mounting cavity 2, and the first connecting end 5 and the second connecting end 6 respectively electrically connected to the control circuit board 4 are disposed on the box body 1, and the first connecting end 5 is connected in series with the shutdown controller.
  • the second connection 6 is connected in series with an adjacent photovoltaic component.
  • the first connecting end 5 and the second connecting end 6 in this embodiment are fixedly disposed on the casing 1, and the first connecting end 5 is located inside the second connecting end 6.
  • a mounting body 7 is disposed in the mounting cavity 2, and the control circuit board 4 is mounted on the upper surface of the bracket body 7.
  • the lower surface of the bracket body 7 is provided with a high voltage plug sleeve 8 and a low voltage plug sleeve 9, and one end of the low voltage plug sleeve 9 is deep into the first
  • the connecting end 5 and the other end are connected to the corresponding contacts of the lower surface of the control circuit board 4 through the bracket body 7.
  • One end of the high voltage plug sleeve 8 penetrates the second connecting end 6 and the other end is connected with the conductive sheet 10 through the bracket body 7.
  • the conductive sheet 10 is connected to a corresponding contact of the lower surface of the control circuit board 4.
  • the outer side of the casing 1 is further provided with a hook 15 which is connected to the bracket body 7 for fixing, and the outer end of the hook 15 is connected to the photovoltaic module.
  • the conductive sheet 10 has a first connecting surface 11 , an extending portion 12 and a connecting pin 13
  • the high-voltage plug sleeve 8 has a second connecting surface 14
  • the first connecting surface 11 and the second connecting surface 14 are closely attached and fixedly connected by electric resistance welding.
  • the voltage of the high voltage plug sleeve 8 is relatively high (1500 V or more).
  • the conductive sheet 10 has a large diameter, a long length, and a large surface area, thereby enhancing the heat dissipation effect.
  • the control circuit board comprises an interconnection main control unit, a controlled unit, a power supply unit, an interconnection switch unit, and the interconnection main control unit is connected to the first connection end, and the interconnection main control unit generates a main under the action of the shutdown controller
  • the control signal is connected to the controlled unit, and the controlled unit generates a controlled signal under the action of the main control signal, and the interconnecting switch unit is connected to the second connecting end, and the interconnecting switching unit is connected or disconnected under the action of the controlled signal. open.
  • FIG. 5 is a perspective view of a second embodiment of a power supply unit of a photovoltaic module array shutdown device of the present invention
  • FIG. 6 is a split view of a second embodiment of a power supply unit of the photovoltaic module array shutdown device of the present invention.
  • the first connecting end 5 and the second connecting end 6 are disposed on the box body 1 through the extension line 21, wherein the first connecting end 5 is located at the lower ends of the box body 1, and the second connecting end 6 is located in the box.
  • the upper ends of the body 1 , the extension lines 21 of the first connection end 5 and the second connection end 6 are bored in the casing 1 , and the extension wire 21 is fastened and fixed by the line card 17 located in the installation cavity 2 , and the control circuit board is 4 has a soldering hole 19 at the lower side, and the fixing blade 18 at both ends of the control circuit board 4 is inserted into the line card 17 to fix the control circuit board 4, and then the first connecting end 5 and the second connection are connected through the soldering hole 19.
  • the end of the extension wire 21 of the end 6 is soldered to a corresponding contact on the lower surface of the control circuit board, and the sealing cap 20 is mounted on the soldering hole 19.
  • FIG. 7 is a system frame diagram of a first embodiment of a photovoltaic module array shutdown device of the present invention for shutting down a photovoltaic module array, including a shutdown controller and a plurality of independent shutdown devices, shutting down
  • the device has a first connecting end and a second connecting end, the shut-off device is connected in series with the photovoltaic module through the second connecting end between the DC bus bars, the positive and negative terminals are DC bus bars, connected to the inverter, and each shut-off device is located Between adjacent photovoltaic modules, the shutdown device is connected in series with the shutdown controller through the first connection end, the shutdown system is a device that turns off the photovoltaic cell assembly string by turning off the controller, and the shutdown controller is controlled to be turned off. The circuit of the device is turned on and off, and the shutdown controller is operated as needed. The shutdown controller is turned on or off at the same time to control the connection or disconnection of the photovoltaic module circuit under the preset condition.
  • the shutdown device comprises an interconnection main control unit, a controlled unit, a power supply unit, an interconnection switch unit, and the interconnection main control unit has a second connection end, and the interconnection main control unit generates a main control under the action of the shutdown controller
  • the signal is connected to the controlled unit, and the controlled unit generates a controlled signal under the action of the main control signal.
  • the interconnecting switch unit has a first connecting end, and the interconnecting switching unit is connected or disconnected under the action of the controlled signal.
  • FIG. 8 is a circuit diagram of a photovoltaic module array shutdown device of the present invention.
  • Z1 is connected to the former PV module, and Z2 is connected to the PV module.
  • the control connection is realized by the photoelectric coupling switch between the interconnecting main control unit and the controlled unit.
  • the photoelectric coupling switch comprises an LED D and a photo-controlled phototransistor T, D and T form an optocoupler for transmitting signals and isolating Since the input impedance of the photocoupler is small, even if the amplitude of the interference voltage is large, the noise voltage fed back to the input end of the photocoupler is small, and only a very weak current can be formed, thereby being suppressed.
  • the optocoupler can play a good role in safety. Even when the external device fails, even if the input signal is shorted, the component will not be damaged, because the input and output loops of the optocoupler can withstand several High voltage of kilovolts. Finally, the optocoupler has a very fast response speed and a response delay time of only about 10 ⁇ s, which is suitable for the case where the response speed is high in the present invention.
  • K1 Connected to the previous interconnect switch unit, K2 is connected to the next interconnect switch unit, the interconnect switch unit includes a MOS FET, and the gate of the MOS FET is connected to the controlled unit.
  • the controlled unit includes: a phototransistor T connected to the power supply unit and a resistor R1, the resistor R1 is connected to the collector of the phototransistor T; a complementary push-pull circuit connected to the power supply unit, and the complementary push-pull circuit includes a triode T2, a resistor R3, and a triode T3 and resistor R4, transistor T2, transistor T3 one is NPN type transistor, the other is PNP type transistor, transistor T2, transistor T3 base is connected, collector is connected in parallel, and the emitter is connected in parallel to the gate of MOS field effect transistor To output the controlled signal, the resistor R3 is connected to the emitter of the transistor T2, the resistor R4 is connected to the emitter of the transistor T3; the transistor T1 and the resistor R2 are connected to the power supply unit, and the base of the transistor T1 is connected to the collector of the phototransistor T The collector of the transistor T1 is
  • Complementary' is the use of two different polarity triodes, using different polarity of the input polarity of different transistors, using a signal to excite two different polarity triodes, one is the NPN type triode, the other is the PNP type triode,
  • the bases of the two transistors are connected, and an input signal is applied to the base of the two tubes as a push signal.
  • the base and emitter of the two tubes are connected in parallel. Due to the different polarities of the two transistors, the input signal voltage on the base is forward biased to the two tubes, and one is reverse biased. When there is an input signal, the voltage of the base of the two tubes rises at the same time.
  • the input signal voltage adds a forward bias voltage to one tube, so the tube enters the conduction and amplification states. Since the base voltage rises and a reverse bias voltage is applied to the other tube, the tube is in an off state. When there is no input signal, the voltage of the base of the two tubes drops at the same time, and the other tube is forward biased, so that the tube enters the conducting and amplifying state, and one tube enters the cut-off state again.
  • the working principle of the fast shutdown circuit of the invention when the photovoltaic system needs to be connected, the control signal flows from K1 to K2, D emits light, T turns on, T1 cuts off, R2 lower end high level, T2 turns on T3 cutoff, T4 gate Extremely high, T4 is on and the PV system is on.
  • the signal between K1K2 is cut off, D does not emit light, T is turned off, T1 is saturated, the lower end of R2 is low level, T2 is turned off T3 is turned on, the gate of T4 is low level, T4 is cut off, The photovoltaic system is disconnected.
  • the power supply unit includes a power take-off input unit, a DC/DC converter, and a regulated output unit, and the power take-off unit is connected to an output end of the photovoltaic module.
  • the regulated output unit is connected to the controlled unit.
  • the DC/DC converter uses a DC/DC chip.
  • the DC/DC chip is a current mode step-down converter with a wide input voltage range of 4.5V ⁇ . 52V for a variety of applications, Adjust the unstable power supply to a fixed, stable output.
  • the built-in low-resistance 0.9 ⁇ switch makes the IC 85% good operating efficiency, plus the advantage of effectively reducing the surface temperature of the chip.
  • the chip has a VIN terminal, an EN terminal, a SW terminal, an FB terminal, a CB terminal, and a GND terminal.
  • VIN and GND are input terminals of the power supply, and power is taken from the photovoltaic component.
  • the power take-off input unit includes a reverse-proof diode D1, a filter capacitor C2, and a filter capacitor C3 connected to the VIN terminal and the EN terminal.
  • V, GND is the output end of the power supply, which supplies power to the photovoltaic fast shutdown circuit.
  • the regulated output unit includes a storage inductor L1 connected to the SW end, a sampling resistor R11, a sampling resistor R12, a freewheeling diode D2, a filter capacitor C4, and a filter capacitor C5.
  • the FB terminal is connected between the sampling resistor R1 and the sampling resistor R2, CB.
  • a bias capacitor C1 is connected between the terminal and the SW terminal.
  • This circuit takes power from the PV module by VIN and GND, and is decoupled by C1 and C3 after D1 anti-connection, U1 for DC/DC conversion, L1 for D1 free-flow, C4 and C5 for filtering, by R1 R2 samples are fed back to U1 to obtain the stable voltage required by the subsequent circuits.
  • FIG. 10 is a system frame diagram of a second embodiment of a photovoltaic module array shut-off device of the present invention.
  • the photovoltaic module junction box shut-off device in this embodiment is similar to that in the first embodiment, with the difference being the shutdown in the present embodiment.
  • the device is disposed correspondingly inside the photovoltaic module, and specifically, can be integrated with the photovoltaic component junction box, and exists as a separate unit of the photovoltaic component junction box, so that the installation is simpler, so the invention can be automatically realized in the system. Quick and safe shutdown of each component to ensure personnel safety.

Abstract

L'invention concerne un appareil d'arrêt de réseau d'ensembles photovoltaïques, permettant la connexion ou la déconnexion d'un ensemble photovoltaïque sous la commande d'un dispositif de commande d'arrêt, et comprenant un corps de boîtier. Le corps de boîtier comprend une chambre de montage. La chambre de montage est dotée d'un corps de recouvrement qui comporte intérieurement une carte de circuit imprimé de commande. Le corps de boîtier comprend des première et seconde extrémités de connexion qui sont électriquement connectées à la carte de circuit imprimé de commande, la première extrémité de connexion étant connectée en série au dispositif de commande d'arrêt et la seconde extrémité de connexion étant connectée en série à un ensemble photovoltaïque adjacent. La carte de circuit imprimé de commande comprend une unité de commande principale d'interconnexion, une unité commandée, une unité d'alimentation électrique et une unité de commutation d'interconnexion. L'unité de commande d'interconnexion est connectée à la première extrémité de connexion et produit un signal de commande principal sous l'action du dispositif de commande d'arrêt. L'unité d'alimentation électrique est connectée à l'unité commandée, et l'unité commandée produit un signal commandé sous l'action du signal de commande principal. L'unité de commutation d'interconnexion est connectée à la seconde extrémité de connexion et est connectée ou déconnectée sous l'action du signal commandé. À l'aide de la solution technique décrite, la présente invention permet un arrêt automatique rapide et sécurisé de chaque composant dans un système, garantissant ainsi la sécurité du personnel.
PCT/CN2018/082979 2018-04-13 2018-04-13 Appareil d'arrêt de réseau d'ensembles photovoltaïques WO2019196096A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2018/082979 WO2019196096A1 (fr) 2018-04-13 2018-04-13 Appareil d'arrêt de réseau d'ensembles photovoltaïques
CN201880000843.8A CN108886339A (zh) 2018-04-13 2018-04-13 光伏组件阵列关断装置

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Application Number Priority Date Filing Date Title
PCT/CN2018/082979 WO2019196096A1 (fr) 2018-04-13 2018-04-13 Appareil d'arrêt de réseau d'ensembles photovoltaïques

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