WO2021182263A1 - アーク検出装置、パワーコンディショナ、屋内配線システム、ブレーカ、太陽光パネル、太陽光パネル付属モジュール及び接続箱 - Google Patents

アーク検出装置、パワーコンディショナ、屋内配線システム、ブレーカ、太陽光パネル、太陽光パネル付属モジュール及び接続箱 Download PDF

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Publication number
WO2021182263A1
WO2021182263A1 PCT/JP2021/008297 JP2021008297W WO2021182263A1 WO 2021182263 A1 WO2021182263 A1 WO 2021182263A1 JP 2021008297 W JP2021008297 W JP 2021008297W WO 2021182263 A1 WO2021182263 A1 WO 2021182263A1
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WO
WIPO (PCT)
Prior art keywords
wiring
arc
detection device
solar panel
converter
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2021/008297
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English (en)
French (fr)
Japanese (ja)
Inventor
達雄 古賀
光武　義雄
圭太 金森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
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 Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Priority to EP21767679.0A priority Critical patent/EP4120496A4/en
Priority to CN202180017579.0A priority patent/CN115210980A/zh
Priority to JP2022505986A priority patent/JPWO2021182263A1/ja
Priority to US17/908,987 priority patent/US12184055B2/en
Publication of WO2021182263A1 publication Critical patent/WO2021182263A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
    • H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
    • G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/14—Circuits therefor, e.g. for generating test voltages, sensing circuits
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/40—Testing power supplies
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
    • H02H1/0015—Using arc detectors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/50—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to the appearance of abnormal wave forms, e.g. AC in DC installations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/20—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electronic equipment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/268—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for DC systems
    • 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
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/1213—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for DC-DC converters
    • 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
    • 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

Definitions

  • the present invention relates to an arc detection device, a power conditioner, an indoor wiring system, a breaker, a solar panel, a module attached to the solar panel, and a junction box.
  • branch wiring wiring that branches from one DC power supply to each of the multiple devices.
  • an arc may be generated for each of the path before branching and the plurality of paths after branching of the branch wiring. If arc detection means are provided for each of the pre-branch route and the post-branch route of the branch wiring, the arc can be detected for each of the pre-branch route and the post-branch route, but the system can detect the arc. The size will increase and the cost will increase.
  • the present invention provides an arc detection device or the like that can easily detect an arc generated in a branch wiring.
  • One aspect of the arc detection device is a first wiring that connects a positive voltage of a DC power supply and a plurality of devices and branches from the DC power supply to each of the plurality of devices, and the DC power supply. It is connected between the negative electrode and the second wiring that connects the plurality of devices and branches from the DC power supply to each of the plurality of devices, and detects the voltage between the first wiring and the second wiring.
  • the voltage detecting unit is provided, and an arc determination unit that determines the generation of an arc based on the voltage detected by the voltage detecting unit is provided.
  • One aspect of the power conditioner according to the present invention includes the above arc detection device and a converter that converts the output power of the DC power supply.
  • One aspect of the indoor wiring system according to the present invention includes the arc detection device, the first wiring, the second wiring, and the plurality of devices installed indoors.
  • One aspect of the breaker according to the present invention is provided with the above-mentioned arc detection device, and when it is determined that an arc has been generated, the current flowing through the first wiring and the second wiring is cut off.
  • One aspect of the solar panel according to the present invention is provided with the above-mentioned arc detection device and generates electricity by sunlight.
  • One aspect of the module attached to the solar panel according to the present invention is provided with the above-mentioned arc detection device and converts the signal output from the solar panel.
  • junction box is provided with the above-mentioned arc detection device, and connects the solar panel and the power conditioner.
  • an arc generated in a branch wiring can be easily detected.
  • FIG. 1 is a configuration diagram showing an example of a photovoltaic power generation system according to the first embodiment.
  • FIG. 2 is a diagram for explaining that the voltage between the paths before branching and between the paths after branching is the same.
  • FIG. 3 is a configuration diagram showing an example of the indoor wiring system according to the second embodiment.
  • FIG. 4 is a diagram for explaining an application example of the arc detection device according to the present invention.
  • FIG. 1 is a configuration diagram showing an example of the photovoltaic power generation system 1 according to the first embodiment.
  • the photovoltaic power generation system 1 includes a solar panel 41, storage batteries 54, 55 and 56, DC / DC converters 51, 52 and 53, and a power conditioner (power conditioner) 60.
  • the solar panel 41 generates electricity by sunlight and generates DC power.
  • the DC power generated by the solar panel 41 is supplied to the power conditioner 60.
  • the storage battery 54 stores the DC power from the DC / DC converter 51
  • the storage battery 55 stores the DC power from the DC / DC converter 52
  • the storage battery 56 stores the DC power from the DC / DC converter 53.
  • the storage batteries 54, 55, and 56 may be mounted on an electric vehicle, an electric bicycle, or the like, or may be used for supplying power to household electric appliances or the like.
  • the DC / DC converters 51, 52, and 53 are voltage converters that boost or step down the DC voltage of the supplied DC power and output it.
  • the DC / DC converter 51 boosts or lowers the DC power supplied from the power conditioner 60 and outputs it to the storage battery 54.
  • the DC / DC converter 52 boosts or lowers the DC power supplied from the power conditioner 60 and outputs it to the storage battery 55.
  • the DC / DC converter 53 boosts or lowers the DC power supplied from the power conditioner 60 and outputs it to the storage battery 56.
  • the power conditioner 60 has a function of converting DC power supplied from the solar panel 41 into AC power. Further, the power conditioner 60 has a function of supplying DC power supplied from the solar panel 41 to a storage battery or the like without converting it into AC power.
  • the power conditioner 60 includes a DC / DC converter 61, an inverter 62, and an arc detection device 10.
  • the DC / DC converter 61 boosts or lowers the DC power supplied from the solar panel 41 and outputs it to the DC / DC converters 51, 52 and 53 and the inverter 62. Since DC power is output from the DC / DC converter 61, the DC / DC converter 61 can be regarded as a DC power supply. That is, the DC / DC converter 61 is an example of a DC power supply.
  • the DC / DC converter 61 has a positive electrode and a negative electrode, and the wiring 110 is connected to the positive electrode and the wiring 120 is connected to the negative electrode.
  • Wiring 110 and 120 connect the DC / DC converter 61 and the DC / DC converters 51, 52 and 53.
  • the wiring 110 is an example of the first wiring for connecting the positive electrode of the DC / DC converter 61 and a plurality of devices.
  • the wiring 120 is an example of the second wiring that connects the negative electrode of the DC / DC converter 61 and a plurality of devices.
  • the DC / DC converters 51, 52 and 53 are examples of a plurality of devices connected to the DC / DC converter 61 via the wirings 110 and 120.
  • the wiring 110 is wiring that branches from the positive electrode of the DC / DC converter 61 to each of the DC / DC converters 51, 52, and 53.
  • the point at which the positive electrode of the DC / DC converter 61 in the wiring 110 branches to the DC / DC converters 51, 52, and 53 is defined as the branch point N3.
  • the path before branching connecting the branch point N3 and the positive electrode of the DC / DC converter 61 is the path 110a
  • the path after branching connecting the branch point N3 and the DC / DC converter 51 is the path 110c
  • the branch point is defined as the path 110c.
  • the post-branch route connecting N3 and the DC / DC converter 52 is referred to as the path 110d
  • the post-branch route connecting the branch point N3 and the DC / DC converter 53 is referred to as the path 110b.
  • the wiring 120 is a wiring that branches from the negative electrode of the DC / DC converter 61 to each of the DC / DC converters 51, 52, and 53.
  • the point at which the negative electrode of the DC / DC converter 61 in the wiring 120 branches to the DC / DC converters 51, 52, and 53 is defined as the branch point N4.
  • the path before branching connecting the branch point N4 and the negative electrode of the DC / DC converter 61 is set as the path 120a
  • the path after branching connecting the branch point N4 and the DC / DC converter 51 is set as the path 120c.
  • the post-branch route connecting N4 and the DC / DC converter 52 is referred to as the path 120d
  • the post-branch route connecting the branch point N4 and the DC / DC converter 53 is referred to as the path 120b.
  • the inverter 62 converts the DC power supplied from the DC / DC converter 61 into AC power and outputs it.
  • the inverter 62 employs, for example, an MPPT (Maximum Power Point Tracking) method, and adjusts the current and voltage of the DC power supplied from the DC / DC converter 61 to values that maximize the power, respectively.
  • MPPT Maximum Power Point Tracking
  • the inverter 62 converts DC power into AC power having a voltage of 100 V and a frequency of 50 Hz or 60 Hz.
  • the AC power is used in household electric appliances and the like.
  • Wiring 110 and 120 are branch wirings, and arcs may be generated for each of the pre-branch path and the post-branch plurality of paths of the branch wiring. If arc detection means are provided for each of the pre-branch route and the plurality of post-branch routes, arcs can be detected for each of the pre-branch route and the post-branch route, but the system becomes large and the system becomes large. In addition, the cost will be increased.
  • the arc detection device 10 is used.
  • the arc detection device 10 includes a voltage detection unit 20 and an arc determination unit 30.
  • the voltage detection unit 20 is connected between the wiring 110 and the wiring 120, and detects the voltage between the wiring 110 and 120.
  • the voltage detection unit 20 is, for example, a voltmeter.
  • the voltage detected by the voltage detection unit 20 is input to the arc determination unit 30.
  • the voltage detection unit 20 is connected between the path 110a in the wiring 110 and the path 120a in the wiring 120 (in other words, the node N1 is a node on the path 110a and the node N2 is a node on the path 120a.
  • node N1 may be a node on route 110b, 110c or 110d
  • node N2 may be a node on route 120b, 120c or 120d.
  • the arc determination unit 30 is realized by, for example, a microcomputer (microcontroller).
  • the microcomputer is a ROM, a RAM in which a program is stored, a processor (CPU: Central Processing Unit) that executes a program, a timer, an A / D converter, a semiconductor integrated circuit having a D / A converter, and the like.
  • the arc determination unit 30 may be realized by hardware by a dedicated electronic circuit composed of an A / D converter, a logic circuit, a gate array, a D / A converter, and the like.
  • the arc determination unit 30 determines the occurrence of an arc based on the voltage detected by the voltage detection unit 20. For example, the arc determination unit 30 determines the occurrence of an arc in the wiring 110 or 120 by frequency-analyzing the voltage detected by the voltage detection unit 20. The voltage on which the high frequency component generated by the generation of the arc is superimposed includes the frequency component caused by the arc, and the generation of the arc can be determined by detecting the frequency component.
  • the arc determination unit 30 determines that an arc has occurred, it can be seen that an arc has occurred somewhere in the wirings 110 and 120. That is, only one voltage detection unit 20 (for example, a voltmeter) can detect an arc in the branch wiring (here, wirings 110 and 120).
  • the arc can be detected by using one voltage detection unit 20 regardless of where the arc is generated in the pre-branch path and the plurality of post-branch paths in the wirings 110 and 120.
  • FIG. 2 is a diagram for explaining that the voltage between the paths before branching and between the paths after branching is the same.
  • FIG. 2 shows the voltage V1 between the paths 110a and 120a, the voltage V2 between the paths 110c and 120c, the voltage V3 between the paths 110d and 120d, and the paths 110b and 120b when an arc is generated in the path 110a.
  • It is a figure which shows the frequency spectrum of the voltage V4 between.
  • the frequency spectra for the voltages V1, V2, V3 and V4 are all substantially the same as the frequency spectra shown in FIG.
  • the routes before and after branching are measured between the routes before branching (for example, between routes 110a and 120a) or between the routes after branching (for example, between routes 110b and 120b), the routes before and after branching. This is because the voltage between the wiring 110 and the wiring 120 is substantially the same without being affected by the branching of the wiring even between the paths (for example, between the paths 110a and 120b).
  • the arc can be detected by using one voltage detection unit 20.
  • the arc detection device 10 connects the positive electrode of the DC power supply (for example, DC / DC converter 61) and a plurality of devices (for example, DC / DC converters 51, 52, 53).
  • the first wiring for example, wiring 110
  • the DC power supply branches to each of the plurality of devices.
  • a voltage detection unit 20 that is connected to the second wiring (for example, wiring 120) and detects the voltage between the first wiring and the second wiring, and the arc based on the voltage detected by the voltage detection unit 20.
  • An arc determination unit 30 for determining generation is provided.
  • the voltage detection unit 20 that detects the voltage between the first wiring and the second wiring can detect the voltage on which the high-frequency component generated by the generation of the arc is superimposed, and detects the arc based on the voltage. can. That is, it is possible to detect an arc generated in the branch wiring without providing arc detection means for each of the path before branching and the plurality of paths after branching of the branch wiring.
  • the arc generated in the branch wiring can be easily detected by using one voltage detection unit 20.
  • the DC / DC converter 61 and the inverter 62 are stopped or a breaker or the like (not shown) provided in each wiring is operated based on the detection result. The current flowing through the wiring can be cut off.
  • the power conditioner 60 includes an arc detection device 10 and a converter (for example, an inverter 62) that converts the output power of a DC power supply.
  • a converter for example, an inverter 62
  • FIG. 3 is a configuration diagram showing an example of the indoor wiring system 2 according to the second embodiment. Note that FIG. 3 also shows a system power supply 43 connected to the indoor wiring system 2.
  • the grid power supply 43 is a power supply that supplies AC power generated at a power plant or the like.
  • the indoor wiring system 2 includes an AC / DC converter 42, wirings 111 and 121, lighting fixtures 57, 58 and 59, and an arc detection device 10.
  • the AC / DC converter 42, wirings 111 and 121, lighting fixtures 57, 58 and 59, and the arc detection device 10 are installed indoors in a facility such as a detached house, an apartment house, a building or a factory.
  • the AC / DC converter 42 is a power converter in which AC power is supplied from the system power supply 43, and the supplied AC power is converted into DC power and output. Since DC power is output from the AC / DC converter 42, the AC / DC converter 42 can be regarded as a DC power supply.
  • the AC / DC converter 42 converts the AC power supplied from the system power supply 43 into DC power and outputs it to the lighting fixtures 57, 58 and 59.
  • the AC / DC converter 42 has a positive electrode and a negative electrode, and the wiring 111 is connected to the positive electrode and the wiring 121 is connected to the negative electrode.
  • Wiring 111 and 121 connect the AC / DC converter 42 and the lighting fixtures 57, 58 and 59.
  • the wiring 111 is an example of the first wiring that connects the positive electrode of the AC / DC converter 42 and a plurality of devices.
  • the wiring 121 is an example of the second wiring that connects the negative electrode of the AC / DC converter 42 and a plurality of devices.
  • the luminaires 57, 58 and 59 are examples of a plurality of devices connected to the AC / DC converter 42 via the wirings 111 and 121, respectively.
  • the wiring 111 is a wiring that branches from the positive electrode of the AC / DC converter 42 to each of the lighting fixtures 57, 58, and 59, as in the wiring 110 in the first embodiment.
  • the wiring 121 is a wiring that branches from the negative electrode of the AC / DC converter 42 to each of the lighting fixtures 57, 58, and 59, as in the wiring 120 in the first embodiment.
  • the plurality of devices are not limited to lighting fixtures, and are not particularly limited as long as they are devices installed indoors.
  • the plurality of devices may be speakers, microphones, or the like.
  • Wiring 111 and 121 are branch wirings, and arcs may be generated for each of the pre-branch path and the post-branch plurality of paths of the branch wiring. If arc detection means are provided for each of the pre-branch route and the plurality of post-branch routes, arcs can be detected for each of the pre-branch route and the post-branch route, but the system becomes large and the system becomes large. In addition, the cost will be increased.
  • the arc detection device 10 is used.
  • the arc detection device 10 includes a voltage detection unit 20 and an arc determination unit 30.
  • the voltage detection unit 20 is connected between the wiring 111 and the wiring 121, and detects the voltage between the wiring 111 and 121.
  • the arc determination unit 30 determines the occurrence of an arc based on the voltage detected by the voltage detection unit 20. Since the arc determination unit 30 has the same function as that in the first embodiment, the description thereof will be omitted.
  • the arc can be detected by using one voltage detection unit 20 regardless of where the arc is generated in the pre-branch path and the plurality of post-branch paths in the wirings 111 and 121.
  • the indoor wiring system 2 includes an arc detection device 10, a first wiring (for example, wiring 111), a second wiring (for example, wiring 121), and a plurality of indoor wiring systems installed indoors.
  • Equipment eg, lighting fixtures 57, 58 and 59).
  • the arc detection device 10 may be applied to the indoor wiring system 2, and the indoor wiring system 2 capable of easily detecting the arc generated in the branch wiring can be provided.
  • the arc detection device is applied to a photovoltaic power generation system (specifically, a power conditioner) and an indoor wiring system
  • a photovoltaic power generation system specifically, a power conditioner
  • an indoor wiring system specifically, a power conditioner
  • the application example is not limited to these.
  • Another application example of the arc detection device according to the present invention that is, the arc detection device that can easily detect the arc generated in the branch wiring
  • FIG. 4 is a diagram for explaining an application example of the arc detection device according to the present invention.
  • the arc detection device is applied to, for example, each component in a system in which DC power supplied from a solar panel 310 via wiring is converted into AC power by a power conditioner 500.
  • a plurality (for example, three) of solar panels 310 connected in series by one wiring 600 (string) are arranged side by side to form a solar cell array 300.
  • the plurality of wirings 600 are grouped by the junction box 400 and connected to the power conditioner 500.
  • the DC power supply is the solar panel 310
  • the first wiring is the wiring 600 connected to the positive electrode of the solar panel 310
  • the second wiring is the wiring 600 connected to the negative electrode of the solar panel 310.
  • the wiring 600 is branched in the power conditioner 500.
  • a breaker 410 is provided for each wiring 600, and here, a breaker 410 is provided in the junction box 400.
  • the breaker 410 does not have to be provided in the junction box 400.
  • the breaker 410 may be provided between the junction box 400 and the solar cell array 300, or may be provided between the junction box 400 and the power conditioner 500 without being provided for each wiring 600.
  • the solar panel 310 has, for example, a solar panel accessory module 320 that converts a signal output from the solar panel 310.
  • the solar panel accessory module 320 is, for example, a DC / DC converter that optimizes the amount of power generation for each solar panel 310.
  • the solar panel 310 does not have to have the module attached to the solar panel 320.
  • the breaker 410 may be provided with an arc detection device.
  • the breaker 410 cuts off the current flowing through the wiring 600 when it is determined that an abnormality has occurred.
  • the solar panel 310 or the module attached to the solar panel 320 may include an arc detection device.
  • the solar panel 310 or the module attached to the solar panel 320 stops the output to the wiring 600 when it is determined that an arc has been generated.
  • the junction box 400 may be provided with an arc detection device. When it is determined that an arc has been generated, the junction box 400 cuts off the current flowing through the wiring 600, for example, via a breaker 410 or the like.
  • the arc detection device according to the present invention is not limited to these, and can be applied to all systems that require arc detection.
  • the breaker 410 may be provided with an arc detection device, and when it is determined that an arc has been generated, the current flowing through the first wiring and the second wiring may be cut off.
  • the solar panel 310 may include an arc detection device and generate electricity by sunlight.
  • the solar panel accessory module 320 may include an arc detection device and convert the signal output from the solar panel 310.
  • the junction box 400 may include an arc detection device and may connect the solar panel 310 and the power conditioner 500.
  • the arc determination unit included in the arc detection device may be realized by software in a general-purpose computer such as a personal computer.
  • Photovoltaic power generation system Indoor wiring system 10
  • Arc detection device 20
  • Voltage detection unit 30
  • Arc judgment unit 41, 310
  • Solar panel 42
  • AC / DC converter 43
  • System power supply 51, 52, 53, 61
  • DC / DC converter 54, 55, 56
  • Lighting equipment 60
  • Wiring 110a, 110b, 110c, 110d, 120a, 120b, 120c, 120d Route 300
  • Solar cell array 320
  • Solar panel included Module 400
  • Junction Box 410 Breaker N1, N2 Node N3, N4 Branch Point V1, V2, V3, V4 Voltage

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)
  • Inverter Devices (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
PCT/JP2021/008297 2020-03-11 2021-03-03 アーク検出装置、パワーコンディショナ、屋内配線システム、ブレーカ、太陽光パネル、太陽光パネル付属モジュール及び接続箱 Ceased WO2021182263A1 (ja)

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CN202180017579.0A CN115210980A (zh) 2020-03-11 2021-03-03 电弧检测装置、功率调节器、室内布线系统、断路器、太阳能板、太阳能板附属模块以及连接箱
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