WO2014069054A1 - Dispositif de raccordement au réseau destiné à un système d'achat d'énergie et permettant de gérer un état anormal du réseau d'énergie pendant des catastrophes et procédé connexe - Google Patents

Dispositif de raccordement au réseau destiné à un système d'achat d'énergie et permettant de gérer un état anormal du réseau d'énergie pendant des catastrophes et procédé connexe Download PDF

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Publication number
WO2014069054A1
WO2014069054A1 PCT/JP2013/070069 JP2013070069W WO2014069054A1 WO 2014069054 A1 WO2014069054 A1 WO 2014069054A1 JP 2013070069 W JP2013070069 W JP 2013070069W WO 2014069054 A1 WO2014069054 A1 WO 2014069054A1
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WO
WIPO (PCT)
Prior art keywords
power
output
connection
purchase
grid
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PCT/JP2013/070069
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English (en)
Japanese (ja)
Inventor
友和 浮須
智幸 澤口
英正 山口
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株式会社日立産機システム
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Publication of WO2014069054A1 publication Critical patent/WO2014069054A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • 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
    • H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
    • 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
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects

Definitions

  • the present invention relates to a grid interconnection device for a power purchase system that can cope with an abnormal situation of a power system caused by a disaster or the like, and uses the generated power of the grid interconnection device for the power purchase system to
  • the present invention relates to an emergency output method for avoiding abnormal situations.
  • the “system” means an electric power system for supplying electric power, and refers to an integrated system from power generation to power distribution for an electric power company to supply electric power to consumers of electric power.
  • the term “specific output system” may be used to indicate an electric power system from a specific power supply source to a specific power demand destination.
  • “Disasters” include human disasters (including wars, civil wars, acts of terrorism), natural disasters (including earthquakes, heavy rains, lightning strikes, tsunamis, tornadoes, etc.), accidents (including railway and traffic accidents, etc.), and power supply An event that causes an abnormal condition over a long period of time in the system.
  • the “power system abnormal situation” refers to a situation in which a serious abnormality occurs in the power system due to an event caused by a disaster, for example, a critical situation such as causing a life crisis. It does not include simple power outages, but it includes large-scale power outages such as power outages throughout the region.
  • “Emergency evacuation use” means that the power generated by the grid connection device for power purchase according to the present invention is used as a power system in order to obtain necessary power for maintaining public interests or maintaining lives in the event of a disaster. Means emergency evacuation in different systems.
  • Power purchase grid interconnection device is used for a system that purchases the generated power by supplying the power obtained by solar power generation or wind power generation to the existing power grid A grid interconnection device.
  • a grid interconnection device used in a system that purchases the entire amount of generated electric power is referred to as a “full grid purchase grid interconnection device”.
  • the “surplus power purchase system” is a system stipulated in the “Act on the Use of Non-Fossil Energy Sources and Effective Use of Petrified Energy Raw Materials by Energy Suppliers (November 1, 2009)” In this system, electric power companies purchase surplus power generated at homes and offices at a fixed price.
  • total fixed purchase system or “total purchase system” is a system stipulated by the Act on Special Measures concerning Renewable Energy Electricity Procurement by Electric Power Companies (August 26, 2011). It is a system that requires electric power companies to purchase all the power generated by renewable energy sources such as solar, wind, hydropower, geothermal, and biomass at a fixed price.
  • the present invention is effective when applied to a system of a power generation company in a power purchase system. In particular, it functions effectively under the total purchase system, but is also effective under the surplus power purchase system.
  • a typical example is a solar power generation system.
  • the solar light energy is converted into a direct current by the solar cell module, and this direct current is converted into alternating current power by the inverter of the power conditioner and used.
  • the voltage is boosted in accordance with the voltage (output) to be used, and a low-voltage AC output is provided via an insulation and step-up transformer so that a DC component from the inverter does not flow into the system.
  • Such power conditioners are already manufactured and sold by many manufacturers.
  • Patent document 1 Japanese Unexamined Patent Publication No. 2011-61970 divides the current power system into a plurality of independent power systems and connects them to each other in order to enable mass introduction of renewable energy.
  • the objective is to build a power system that can be operated stably and stably and its operation means.
  • This is configured by a multi-terminal type asynchronous interconnection device characterized in that a plurality of asynchronous power systems including the main power system are connected and the power control is performed so that the sum of the inflow power and the output power is zero.
  • Patent Document 2 Japanese Unexamined Patent Application Publication No. 2011-182641 has the same problem as Patent Document 1, and connects a plurality of asynchronous power systems including a main power system, and flows in and sends out power. Power control so that the total sum of power is zero, and a multi-terminal asynchronous interconnection network system composed of multi-terminal asynchronous interconnection devices, and power equipment installed in an independent electric power system. Power interchange between different power system power devices by connecting a power network control network device composed of power device control terminal devices having means for power control and integrating power control and communication control, We are constructing a power network system that enables simultaneous and asynchronous power interchange between power systems.
  • Patent Document 3 Japanese Unexamined Patent Publication No. 2012-10530
  • Japanese Unexamined Patent Publication No. 2012-10530 has a problem of suppressing the possibility of a chain power outage due to unstable system due to a large amount of fluctuation of natural energy power supply, Therefore, the power system is subdivided, and an apparatus capable of accommodating asynchronous power between them is developed, and power is interchanged with a destination through a plurality of routes like the Internet.
  • a multi-terminal power conversion device that distributes and distributes power is devised, and asynchronous power connection of subdivided power systems is performed, thereby enabling chain power failure Suppress.
  • By adding an information processing address power can be accommodated to a target power system like the Internet.
  • the power conversion related information and the transaction related information are associated with each other so that power transactions and transactions of derivative products can be performed.
  • Patent Document 4 (International Publication WO2008 / 117392) aims to provide a power system that can stand on its own without relying on a conventional power system, and includes one or more power generation devices and one or more power storage devices. And self-sustained distribution in which a plurality of power consumers including one or a plurality of power consuming devices and a power supply / demand control device are directly or indirectly interconnected, and each power supplier / supply unit exchanges excess or deficient power. In each type of power system, each power demand control device determines whether or not there is a power shortage in each power consumer, or whether or not there is a power surplus.
  • An invention is disclosed in which power is received from a power supplier and demander, and when power surplus occurs in the power supplier and demander, the power is supplied to another power supplier and demander.
  • Patent Document 5 Japanese Laid-Open Patent Publication No. 2012-60761 aims to properly trade electric power within a region even when the reception status of reverse power flow varies from region to region.
  • the power distributor is between the power generated by the solar cell, the power stored or discharged by the storage battery, the power received or transmitted via the commercial low-voltage line, and other residential or regional facilities via the shared low-voltage line.
  • An invention is disclosed that includes a switching unit that switches a flow of power to be transmitted or received and power supplied to a power load.
  • the transaction device determines and switches the flow of power in the home power distributor based on the measurement results of the generated power of the solar cell measured by the home power distributor, the stored or stored power of the storage battery, and the power consumption of the power load.
  • the transaction apparatus stores the surplus power in the local storage battery when there is surplus power in the area, and transmits the stored power of the local storage battery to the shared low voltage line when the surplus power decreases.
  • Patent document 6 Japanese Unexamined Patent Publication No. 2011-101532 discloses that the amount of electric power that can be accommodated between electric power consumers and the amount of commercial AC power is suppressed and the amount of electric power is accommodated. It is an object to provide an electric power interchange system that can be used.
  • this power interchange system the amount of solar power generated by solar cells is interchanged between housings in an apartment house. Each house receives supply of commercial AC power through the same power supply system, and also receives power supply from solar cells. The amount of power supplied to each house is managed by a power management device.
  • the power management apparatus grasps the surplus power amount in one house and the required power amount of another house, and supplies the surplus power amount of one house to another house through the power supply system.
  • Patent document 7 Japanese Unexamined Patent Publication No. 2011-1015373 aims to provide a power distribution system that can contribute to the promotion of energy saving awareness, solar cells that supply power generated by sunlight, oil, and the like
  • a power supply system that can drive a DC device and an AC device with power supplied from at least one of the commercial AC power sources that supply the power generated by the solar cell, the solar cell and the commercial AC power source
  • an invention including a light emitting element for notifying a power source in use as a power supply source is disclosed.
  • Patent Document 8 Japanese Patent Application Laid-Open No. 2010-273489
  • the first object of the present invention is to provide a power conditioner that can improve partial load efficiency and improve system conversion efficiency in a photovoltaic power generation system in a power conditioner equipped with a transformer.
  • a second object of the present invention is to provide a power conditioner that can be further reduced in size in a power conditioner configured by putting a transformer and an inverter in the same casing.
  • Non-Patent Document 2 also discloses a power conditioner.
  • the surplus power purchase system has been promoted by local governments for a long time, and the total power purchase system, which is a new purchase system that has a different purpose from the surplus power purchase system that has been implemented in the past, was released on July 1, 2012. Effective from the day, administrative guidance is also being promoted. In this way, whether it is a surplus power purchase system or a full quantity purchase system, the power generated by a system different from the system of the power company is distributed in the system. However, the distribution is only between the systems of specific power generation companies and electric power companies. It is not a system that freely allows direct supply of surplus power from a specific power generation company that is a consumer of an electric power company to other consumers.
  • the total amount purchase system in particular, the total amount of generated power is purchased directly connected to the high-voltage or special high-voltage system of the electric power company, not to the interconnection between the low-voltage systems of each home or factory. Therefore, it is considered that the future full purchase system will be introduced as a system that does not allow self-consumption of power generated by a solar power generation system or the like.
  • Non-Patent Document 2 a power conditioner that can supply power even in the event of a power failure in self-sustained operation is already known in Non-Patent Document 2.
  • a general grid-connected photovoltaic power generation system cannot use electricity when commercial power is interrupted” solves the problem of the present invention. It is not possible.
  • the grid connection device for power purchase of the present invention A power conditioner that converts DC power from a renewable energy source such as solar power generation or wind power generation into AC power, and a step-up transformer that converts AC power output from the power conditioner into high voltage power, A grid connection device for power purchase that outputs high voltage power from the step-up transformer to a high voltage power system, In order to output the output from the grid connection device for power purchase to a connection destination of a system different from the high-voltage power system, a switch for switching the connection destination is provided.
  • the switch is provided between the power conditioner and the step-up transformer, and the switching operation of the switch is limited.
  • the output from the switch is branched from the output system so that it can be output to a plurality of output destinations.
  • Each of the branched output systems includes a blocking unit, and connection / cutoff of the blocking unit is controlled by control of the output blocking control unit.
  • the power conditioner, the step-up transformer, and the switch are arranged in the same casing.
  • the grid connection device for power purchase of the present invention A power conditioner that converts DC power from a renewable energy source such as solar power generation or wind power generation into AC power, and a step-up transformer that converts AC power output from the power conditioner into high voltage power
  • the power conditioner and the step-up transformer are arranged in the same housing, and are a power purchase system interconnection device that outputs high-voltage power from the step-up transformer to a high-voltage power system
  • a connection terminal for outputting the output from the grid connection device for power purchase to a system different from the high-voltage power system and a switch for switching the connection destination of the output from the power conditioner.
  • the switch is configured to switch the connection to the connection terminal that outputs the output from the power conditioner to the step-up transformer or the separate system, and the switching operation of the switch is limited. It is characterized by.
  • the switching device in which the switching operation is restricted includes a security mechanism unit that outputs a switching signal to the switching device, A terminal box containing a connection terminal that outputs to the other system is provided, and the terminal box has a sealing structure covered with a destructible sealing cover. When the emergency evacuation such as a disaster, the sealing cover is opened. Connection with the connection terminal to the other system is possible, and an input unit for inputting the password to the security mechanism unit is provided.
  • the grid connection device for power purchase of the present invention is provided with a display device that displays the operating state,
  • the display mode displayed on the display device is A safety work mode for displaying that the connection work with the connection terminal to the different system can be safely done; and It has another system output mode which displays that the electric power is output with respect to another system from the connection terminal to said another system.
  • the output method to another system of power using the grid interconnection device for power purchase of the present invention A power conditioner that converts DC power from a renewable energy source such as solar power generation or wind power generation into AC power, and a step-up transformer that converts AC power output from the power conditioner into high voltage power,
  • the power conditioner and the step-up transformer are arranged in the same enclosure, and a method for outputting power to another system using a power purchase system interconnection device that outputs high-voltage power from the step-up transformer to a high-voltage power system
  • a connection terminal that outputs the output from the grid connection device for power purchase to a system different from the high-voltage power system, and a switch that switches a connection destination of the output from the power conditioner the switch is
  • the power switching system interconnection device is configured to switch the connection from an output from the power conditioner to a connection terminal that outputs to the step-up transformer or the separate system, and the power purchase system interconnection device outputs a switching signal to the switch Part
  • the security mechanism performs password authentication processing consist
  • the output method to another system of power using the grid interconnection device for power purchase of the present invention In the display device that displays the operating state of the grid connection device for power purchase, When the ID / password entered by a legitimate operator is authenticated and the switch detects that the output from the power conditioner has not switched the connection to the connection terminal to the other system Displays the safety work mode, When the switch detects that the output from the power conditioner is switching the connection to the connection terminal to the other system, and it detects that the power is output from the connection terminal. The system output mode is displayed.
  • the grid connection device for power purchase of the present invention is particularly effective when applied to a total purchase system, and converts DC power from a renewable energy source such as solar power generation or wind power generation into AC power.
  • a power conditioner, and a step-up transformer that converts AC power output from the power conditioner into high-voltage power, and the power conditioner and the step-up transformer are arranged in the same casing, and from the step-up transformer
  • a high-voltage power grid interconnection device that outputs high-voltage power to a high-voltage power grid, Provided in the same housing are a connection terminal for outputting the output from the total quantity purchase system interconnection device to a system different from the high-voltage power system, and a switch for switching the connection destination of the output from the power conditioner.
  • the switch is configured to switch connection to a connection terminal that outputs the output from the power conditioner to the step-up transformer or the separate system, and the switching operation of the switch is limited.
  • a security mechanism that outputs a switching signal to the switch is provided.
  • a terminal box is provided that encloses the connection terminals that are output to the separate system, and the terminal box has a sealing structure covered with a destructible sealing cover, and the sealing cover is destroyed during an emergency evacuation such as a disaster.
  • an input unit for inputting the password to the security mechanism unit is provided.
  • the emergency output method of power at the time of emergency evacuation such as a disaster using the grid connection device for power purchase of the present invention is particularly effective when applied to the total purchase system,
  • a power conditioner that converts DC power from a renewable energy source such as solar power generation or wind power generation into AC power, and a step-up transformer that converts AC power output from the power conditioner into high voltage power
  • the power conditioner and the step-up transformer are arranged in the same housing, and the electric power at the time of emergency evacuation such as a disaster using a total quantity purchase system interconnection device that outputs the high-voltage power from the step-up transformer to the high-voltage power system
  • Emergency output method Provided with a connection terminal for outputting the output from the total amount purchase grid interconnection device to a system different from the high-voltage power system, and a switch for switching the connection destination of the output from the power conditioner, the switch,
  • the system is configured to switch the connection from the output from the power conditioner to the step-up transformer or a connection terminal that outputs to the separate system, and
  • the security mechanism performs password authentication processing consisting of letters or numbers input by an operator, and if it is authenticated as a legitimate operator, outputs a switching permission command signal, After the output of the switching permission command signal, the switch can be switched from the connection destination of the output from the power conditioner to the connection terminal outputting from the connection to the high-voltage power system to the connection terminal. It is characterized by providing.
  • the present invention is a device that is used as a general grid connection device for power purchase in normal times, but has a configuration capable of switching the connection of the output power to a system other than the power system in an emergency evacuation during a disaster. Because it is equipped, it can cope with an abnormal situation at the time of a disaster.
  • a power factor of 1 is achieved at the time of receiving power, and even when power is output to a system other than the power system in the event of a disaster such as an earthquake disaster, The power factor of 1 can be realized.
  • FIG. 1 is a block diagram showing the configuration of an embodiment of the power purchase grid interconnection device of the present invention.
  • FIG. 2 is a flowchart of control in the case of outputting to another system in the embodiment of the power purchase grid interconnection apparatus of the present invention.
  • FIG. 3 is a mounting diagram of equipment arrangement of an embodiment of the grid connection device for power purchase of the present invention.
  • FIG. 4 is a diagram showing a display example of the display device in the embodiment of the power purchase grid interconnection device of the present invention.
  • FIG. 5 is a flowchart for explaining display on the display device in the embodiment of the grid connection device for power purchase of the present invention.
  • FIG. 6 is a diagram showing another display example of the display device in the embodiment of the grid connection device for power purchase of the present invention.
  • FIG. 7 is a block diagram of the adjustment of the power phase of the power conditioner in the embodiment of the grid connection device for power purchase of the present invention.
  • FIG. 8 is a block diagram illustrating a multiple output configuration and an interrupt configuration thereof according to the embodiment of the present invention. The relationship with FIG. 1 is shown in the figure.
  • FIG. 9 is a flowchart for explaining a first pattern of the multiple output function and the cutoff function thereof according to the embodiment of the present invention.
  • FIG. 10 is another flowchart for explaining the second pattern of the multiple output function and the cutoff function thereof according to the embodiment of the present invention.
  • connection terminal for another system that is newly connected to another system, separately from a terminal that connects the generated power of solar power generation or wind power generation to a high-voltage power system of an electric power company.
  • connection terminals for different systems There may be one or more connection terminals for different systems. As will be described in detail in the following embodiment, when a plurality of connection terminals for different systems are provided, it is necessary to consider ON / OFF of power supply to each connection terminal.
  • connection terminals for other systems shall be sealed so that they cannot be connected to the terminals during normal use from the viewpoint of safety.
  • the sealing structure is, for example, covered with a sealing cover that performs sealing in order to suppress the free use of everyone and limit the use to a predetermined qualified person.
  • the sealing cover can be physically broken to enable connection to a connection terminal for another system.
  • the sealing cover may be configured to be opened only when a specific condition is satisfied, or may be configured to be opened only by a specific worker.
  • the present invention can be provided with a switch for switching the connection so that power is output from the connection terminal for another system.
  • This switch can be configured so that the connection is switched only when a specific condition is satisfied.
  • the present invention may be configured to provide a display device for informing the worker that the connection work can be safely performed for the connection terminal for another system.
  • the present invention is configured to provide two modes of an operation mode in which the operation is synchronized with the grid output phase at the time of power purchase and an operation mode in which the operation is performed independently (asynchronous) during private consumption, and the two operation modes are switched. You can also
  • FIG. 1 is a configuration example of an embodiment of the power purchase grid interconnection device of the present invention, and the same parts as those in FIGS.
  • the description of the embodiments does not limit the technical scope of the invention, and design modifications that can be easily made by those skilled in the art are included in the present invention within the scope of the inventive idea.
  • the DC output power generated by the solar cell modules 1, 1 is converted into AC power by the inverter 3 in the power conditioner 2, and the waveform is passed through the reactor 4. Is converted to AC power with a sine wave.
  • This AC power is transmitted to the step-up transformer 6 via the conductor (electric wire) 5.
  • the step-up transformer 6 applies low-voltage (600 V or less, for example, 200 V or less) AC power output from the power conditioner 2 to a high voltage (600 to 7000 V or less, for example, 6.6 KV for AC) or extra high voltage (7000 V for AC). It is a transformer that converts to the above, and also plays the role of an isolation transformer.
  • the electric power boosted to a high voltage or extra high voltage by the step-up transformer 6 takes out a power amount signal from the power line 19 via a vacuum circuit breaker (VCB) 7 and a disconnector (DS) 8.
  • VCT vacuum circuit breaker
  • DS disconnector
  • PALS column top air switch
  • a vacuum circuit breaker (VCB) 7 protects those connected devices by interrupting the step-up transformer 6 from the high-voltage system in the event of a short circuit or ground fault in the high-voltage system.
  • a power meter 12 is connected to the power supply / demand meter transformer 9, and the amount of power transmitted to the power system 11 (the amount of power sold) is measured.
  • the power conditioner 2 constitutes a low-voltage system (LS) device, which includes a step-up transformer 6 to a power supply / demand meter transformer 9 and a watt-hour meter 12.
  • pressure system (HS) is comprised.
  • the low-voltage system (LS) and high-voltage system (HS) devices are housed in the same housing 13. That is, in the housing 13, the power conditioner 2, the step-up transformer 6, the vacuum circuit breaker 7, the disconnector 8, the power transformer 9 for power supply and demand, and the wattmeter 12 are housed.
  • an air load switch may be used as a load switch for protecting and switching the line instead of the vacuum circuit breaker 7 and the disconnecting switch 8.
  • the load switch protects the line with a built-in fuse and serves as a vacuum circuit breaker 7 and a disconnecting switch 8.
  • the power supply / demand meter transformer 9 and the watt-hour meter 12 are not necessarily housed in the housing 13.
  • the embodiment of the present invention relates to the grid interconnection device for power purchase as described above, and outputs the output power from the power conditioner 2 to a system separate from the power system in an emergency evacuation during a disaster such as an earthquake disaster.
  • the present invention relates to an apparatus and a method that make it possible. Specifically, as shown in FIG. 1, a connection terminal 15 is provided between the low-voltage system (LS) and the high-voltage system (HS) of the grid connection device for power purchase so that power can be output in the event of a disaster. It is.
  • the power from the power conditioner 2 is connected to the step-up transformer 6 so that the power from the power conditioner 2 is boosted by the step-up transformer 6.
  • This is required in the power purchase system interconnection device for power purchase.
  • the switch 14 having a special configuration, it is urgent at the time of disaster such as an earthquake disaster. As an evacuation, the output power from the power conditioner 2 can be safely output not only to its own use but also to another system 18 different from the power system.
  • the connection of the switch 14 can be switched in an emergency evacuation manner using a safe and simple method, and the output power output from the power conditioner 2 is different from the power system 11 in addition to the self-use.
  • This allows safe output to another system 18.
  • the grid interconnection apparatus according to the embodiment of the present invention is a facility that can be used even in the total quantity purchase system, it is assumed that power to the separate system 18 is not output in normal times.
  • the grid interconnection device for power purchase according to the embodiment of the present invention must output power to the separate grid 18 in an emergency evacuation only in the event of a disaster, for the purpose of the total fixed purchase system. Therefore, the application of the present invention is particularly effective.
  • emergency evacuation measures such as at the time of a disaster can be safely achieved by the following two specific configurations.
  • the switch 14 provided with the connection terminal 15 to the separate system 18 is configured by a sealing structure that restricts free use by everyone.
  • the switch 14 is sealed, and is usually configured so that the connection terminal 15 cannot be physically connected to the other system 18.
  • this is possible by covering the switching lever of the switch 14 with a sealing cover. Since this seal cover is not intended to be impossible to use, it may be transparent so that the switching lever of the switch 14 is visible, but it is opaque and not visually visible. It may be one that restricts free use. In an emergency evacuation such as a disaster, a technician having electric construction qualification destroys the sealing cover and exposes the switching lever of the switch 14 to enable connection work with another system 18. You may do it.
  • the box 16 in which the switch 14 shown in FIG. 1 is housed may have a locking structure that can be opened and closed only during an emergency evacuation such as a disaster. In that case, it is necessary to make it possible for a technician having a qualification for electrical work to release the lock.
  • the destruction of the sealing cover and enabling the connection work is intended to allow the connection to the separate system 18 for emergency evacuation in the event of a disaster, etc. Since it is possible to use a technician having a construction qualification, it is intended to be shown explicitly from the exterior as the case 13 of the grid connection device for power purchase according to the embodiment of the present invention. is there.
  • a seal cover such as a fire alarm, there is also an aim to make the operator psychologically and implicitly aware that it is an emergency evacuation action in the event of a disaster. In particular, if the equipment is compatible with the full-volume purchase system, it is allowed to be used outside of the electric power system as an emergency evacuation for disasters, etc. is there.
  • the above-described operation of “switch only by software only when a specific limited condition is satisfied” is configured to be performed by the security mechanism unit 17 of FIG. More specifically, the security mechanism unit 17 can be provided with an authentication system, and only a specific limited worker or a responsible person having a specific authority can issue a switch command to the switch 14. Configure as follows.
  • the operation when this specific condition is satisfied will be described with reference to the flowchart of FIG.
  • the flow chart of FIG. 2 is necessary when switching work is divided into a case where the grid interconnection device for power purchase according to the embodiment of the present invention is applied to the total purchase system and a case where it is applied to the surplus power purchase system. It is an example of the flow of processing until a switching permission command is issued.
  • the authentication system according to the second embodiment of the present invention requests input of an ID that is an identifier for identifying a worker such as a person in charge and input of a password.
  • the authentication of the person may be a system that can be authenticated by handing the IC card to a legitimate worker.
  • step 200 when the processing of the authentication system starts (step 200), the power from the grid connection device for power purchase is normally supplied by the power company. It is detected whether the power supply system 11 is supplied or stopped, that is, whether or not the power company system 11 is operating normally (step 210). If power is being supplied to the power company's grid 11 (NO in step 210), the power company's grid 11 is normal, and the above-mentioned "during emergency evacuation such as a disaster" described above. Does not correspond to Therefore, it is not permitted to switch the switch 14, that is, the process is terminated without outputting a switch permission command to the switch 14 because “the specific condition is not satisfied” (step 250). .
  • step 210 if the electric power of the grid 11 of the electric power company is stopped (power failure state) (YES in step 210), this corresponds to the above-mentioned “at the time of emergency evacuation such as disaster”. Therefore, one of the “specific conditions” for switching the switch 14 is satisfied. However, the connection to the separate system 18 should be permitted only to a specific worker or responsible person, and it is necessary to provide a further safe working environment.
  • the process waits for input of an ID and a password by a specific worker (step 220).
  • step 210 is omitted, and the process directly waits for input of an ID and password by a specific worker (step 220). If the input ID and password are correct (YES in step 230), a switching permission command for permitting switching of the switch 14 is output (step 240), and the process ends (step 250). On the other hand, if the input ID and password are not correct (NO in step 230), the “specific condition” is not satisfied, and a switching permission command for permitting switching of the switch 14 is output. First, the process ends (step 250).
  • detecting whether power from the grid 11 of the electric power company is supplied or stopped is to detect whether or not it corresponds to “emergency evacuation such as a disaster”. Yes, specifically, the power failure state of the grid 11 of the electric power company is detected. However, even if the grid 11 of the power company is in a power outage state, the instantaneous power failure state or the normal short time power outage state does not correspond to “emergency evacuation such as a disaster” in the present invention.
  • the grid connection device for power purchase of the present invention When the grid connection device for power purchase of the present invention is applied to the total purchase system, that is, the grid interconnection device of the embodiment of the present invention corresponding to the total purchase system is allowed to output power to another system 18. Since this is exceptionally permitted only during “emergency evacuation such as a disaster”, strict detection, control, and processing must be performed.
  • the grid connection device for power purchase according to the present invention is applied to the surplus power purchase system, the connection work from the connection terminal 15 to the separate system 18 is performed in a safe state. Need to be able to provide. Therefore, there is an aim to confirm that the construction work is in a safe state. This is necessary both when applied to the full purchase system and when applied to the surplus power purchase system.
  • a sealing cover having a sealing structure for the switching lever and the like of the connection terminal 15 is provided, which is destroyed in the event of a disaster to expose the switching lever and the like of the connection terminal 15, so that He explained that connection work to 18 would be done.
  • both the first embodiment and the second embodiment described above may be used in combination without being carried out independently. That is, in the process of step 240 in the flowchart shown in FIG. 2, an opening permission command for opening the sealing structure may be output to the sealing mechanism unit when a switching permission command is issued to the switch 14. .
  • a step of outputting an opening permission command (without a flowchart) is provided, and the opening of the sealing cover is permitted by the opening permission command. Further, for safety, it is preferable to provide an opening mechanism portion that can be opened after the opening permission command is output.
  • the authentication system in the security mechanism unit 17 is not limited to an authentication method by inputting an ID / password.
  • the sealing structure may be based on locking of a key, and the one that is unlocked by inserting a dedicated key for unlocking may be used, or one that is used in combination with the authentication system described above may be used.
  • biometric authentication systems that use biometric information such as fingerprints, iris patterns, retinal patterns, vein patterns, and voiceprints of specific authorized workers / responsible persons, systems that use IC cards, The system used together may be used.
  • the reason for limiting the construction work to a specific authorized worker / responsible person is as follows. Although it is one repetition, although it is the grid connection apparatus for power purchase of the Example of this invention which can switch an electric power grid
  • FIG. 3A is a front view showing a part of the grid connection device for power purchase according to the embodiment of the present invention
  • FIG. 3B is a side view showing a part of the system. is there.
  • the housing 13 is configured by connecting a plurality of three rectangular parallelepiped boxes 13a, 13b, and 13c.
  • a wall is provided at the boundary of each box 13a, 13b, 13c, and each box may be an independent box, and is a box between the low pressure system (LS) and the high pressure system (HS).
  • LS low pressure system
  • HS high pressure system
  • a wall may be provided only at the boundary between 13a and 13b.
  • the power conditioner 2 is disposed in the right box 13a, and the step-up transformer 6, the vacuum circuit breaker 7, and the disconnector 8 are disposed in the box 13b adjacent to the box 13a. Further, a power supply / demand transformer 9 and a watt hour meter 12 are disposed in the adjacent box 13c. Ventilation fans 24 and 24 are installed above the box body 13a and the box body 13b. By exhausting the heat generated from the power conditioner 2 and the step-up transformer 6 to the outside of the casing 13, the inside of the casing is I try not to get hot. When the total heat generation amount is small, one of the ventilation fans 24 may be omitted.
  • the box 16 provided in FIG. 3 is provided in the box 13a on the low-voltage system (LS) side, and is configured as a box-shaped structure including the switch 14 and the connection terminal 15.
  • the box 16 is provided in the box 13a on the low-voltage system (LS) side for ease of wiring. That is, the box 16 is provided in the box 13a in order to output the output power from the power conditioner 2 from the connection terminal 15 via the switch 14 by a short connection line.
  • the box 16 is provided in the box 13c due to the arrangement space of each device in the housing 13.
  • the box 16 has a sealed structure. Specifically, the cover is covered with a sealing cover.
  • the devices housed in the boxes 13a and 13b in the housing 13 are managed by the power selling side, and maintenance work is performed.
  • the equipment stored in the box 13c is managed by the electric power company, and maintenance work is performed.
  • the box 16 is provided in the box body 13a, this is suitable for the power selling side to perform connection work.
  • the box 16 is provided in the box 13c, even if the power company performs the connection work or the power selling side performs the connection work, it is suitable for performing the connection work under the management of the power company. Yes.
  • the low-pressure system (LS) device and the high-pressure system (HS) device are housed in the same housing, so that the installation area can be reduced and the space can be saved.
  • a conventional low voltage system voltage is created by using the power purchase system interconnection device configured by placing the step-up transformer 6 and the power conditioner 2 in one casing. Therefore, the AC power passing through the reactor 4 of the power conditioner 2 can be transmitted to the step-up transformer 6 as it is, and the power conditioner unit can be transformerless.
  • the conventional low voltage transformer has its own loss, and by eliminating this transformer, the loss can be reduced and the power generation efficiency can be improved.
  • the low-voltage transformer also has a function of insulation from the power company system. In the embodiment of the present invention, since the low-voltage transformer is not required, this insulation function is achieved by the step-up transformer 6. Devised to substitute.
  • FIG. 4 shows an example of connection to another system 18 in order to supply output power from the grid interconnection apparatus according to the embodiment of the present invention to a highly public facility P such as a hospital as emergency evacuation such as a disaster. It is a figure explaining the status display in the step which permits construction.
  • the status display panel 400 is provided so as to be visually seen at any position of the housing 13 of the grid interconnection device of the embodiment of the present invention.
  • the installation position of the state display panel 400 is preferably in the vicinity of the box 16.
  • the status display panel 400 permits a “system power cut-off” display 410 indicating that power from the grid 11 of the power company is stopped (power failure status), and connection work to another grid 18 is permitted.
  • An example is shown in which a “construction possible mode” display 420 indicating that the connection work has been completed and a “disaster output mode” display 430 indicating that power is being output to another system 18 is displayed as highlights. Yes.
  • characters such as “system power cut-off”, “construction possible mode”, and “disaster output mode” may be blinked by blinking the display LED.
  • connection switching work is performed in the grid connection device for power purchase according to the embodiment of the present invention
  • the “system power cut-off” display 410 and the “construction possible mode” display 420 are displayed on the status display panel 400. After confirming the above, connection work with the connection terminal 15 is performed toward the other system 18. Next, the flow until the “construction possible mode” display 420 is displayed will be described with reference to the flowchart of FIG.
  • step 500 when the process of displaying the “construction possible mode” display 420 on the status display panel 400 is started (step 500), power from the grid 11 of the power company is supplied or stopped. Is detected (step 510). If power is supplied from the grid 11 (NO in step 510), the usage state when applied to the total purchase system does not correspond to the above-mentioned "emergency evacuation such as disaster". . Therefore, since the output to the other system 18 is not permitted, that is, “the specific condition is not satisfied”, the transition to the “construction possible mode” display 420 is prohibited, and the processing is ended (step 590). . Further, even when applied to the surplus power purchase system, if power is supplied from the grid 11 (NO in step 510), it may not be safe to perform the construction, so the power grid stop process 515 I do. Thereby, the safety of construction can be secured.
  • step 510 if the power from the grid 11 is stopped (power failure state) (YES in step 510), the construction safety is maintained, or “emergency evacuation such as disasters” in the total purchase system described above. Corresponds to "time”. Therefore, in order to achieve a state satisfying one of “a construction safety ensuring state” or “a specific condition” in which power output to another system 18 is permitted, “construction indicating that connection switching work is permitted”
  • the “possible mode” display 420 is displayed and the processing of the step may be advanced.
  • step 520 it is detected whether the output power is output from the power conditioner 2 (step 520). If power is being output from the power conditioner 2 (NO in step 520), touching a device or terminal including the connection terminal 18 will touch a charged part due to power supply, and there is a risk of electric shock or the like. However, attention is required. In such a state of caution, it is not preferable to perform construction. Therefore, the process is terminated without displaying the “construction possible mode 420” (step 590). On the other hand, if the output power of the power conditioner 2 is stopped (YES in step 520), it can be said that the environment is close to the wiring work, and the process proceeds to the next process.
  • step 530 If the input ID / password is correct (YES in step 530), the process proceeds to the next process, and the absolute maximum rating of the power output from the power purchase grid interconnection device of the embodiment of the present invention is displayed (step). 550).
  • the step of inputting the ID / password by this specific worker does not necessarily have to be performed at this timing, but can be input when it is necessary to be an authorized worker. It is also possible to input immediately after the start.
  • step 560 the magnitude of power required by the supply destination P connected as the separate system 18 and the magnitude of demand electric power are input (step 560).
  • construction is started after confirming the specifications of both powers in advance, but it is input for confirmation for safety.
  • the “construction possible mode” display 420 as the next process is displayed.
  • the input of the demand power capacity of the power supply destination P is accepted (step 560)
  • it is compared with the magnitude of the absolute maximum rating of the output power from the grid connection device for power purchase according to the embodiment of the present invention (step 560).
  • step 590 when the magnitude of the absolute maximum rating of the output power of the grid connection device for power purchase is smaller (NO in step 570), the process ends without shifting to the “construction possible mode” display 420.
  • step 540 if the input ID / password is not correct (NO in step 540), the “specific condition” is not satisfied, and the process does not proceed to the “construction possible mode” display 420. The process ends (step 590).
  • the display device 600 shown in FIG. 6 may be the same as the status display panel 400 shown in FIG. 4 or may be another display device.
  • the display screen of the display device 600 includes a display screen unit 605 for displaying comments and messages, a numeric keypad unit for inputting an ID / password, and a button input unit 640 as a touch panel.
  • the display device 600 may be configured by an input means such as a keyboard button for inputting an ID / password.
  • step 550 When an ID / password or the like is input using the display device 600 as shown in FIG. 6 and the input ID / password is correct (YES in step 540), in step 550, the display screen 605 in FIG. Above, the display 610 of the value of the absolute maximum rating of the grid connection device for power purchase according to the embodiment of the present invention is displayed. In the next step 560, after the demand power capacity of the power supply destination is input, the display 615 of the input power demand capacity of the power supply destination is displayed.
  • step 570 if the power demand power capacity of the power supply destination is larger by comparing the absolute maximum rated power of the output power from the power purchase grid interconnection device of the embodiment of the present invention and the power demand capacity of the power supply destination.
  • a display 620 in which the power demand capacity of the power supply destination exceeds the absolute maximum rating is displayed.
  • 80% of the absolute maximum rating including the margin is used as a criterion for determination with the intention of increasing safety.
  • the screen is not limited to 80%, and the safety value is judged and compared using the management value as a guideline that can be obtained from regulations on the handling of electric power, or a predetermined guideline that can be aimed at enhancing safety based on experience. It may be displayed on the screen.
  • a display 625 for prohibiting connection is displayed for safety.
  • a display 630 indicating that the construction specifications are to be reconsidered is displayed, or a consultation destination display 635 for enabling connection work to another connection destination is displayed. May be displayed to support the construction. By touching the display part of the consultation destination display 635 and pressing the screen, it may be possible to automatically contact the consultation destination. For example, a configuration in which a telephone call is automatically made or an email is transmitted is possible.
  • FIG. 7 is a block diagram for adjusting the power phase of the plurality of power conditioners 2,... 2 corresponding to the plurality of power generation systems (solar panels 1,... 1).
  • the switchers 20 and 20 are provided with a switcher 14 that connects / cuts off a plurality of power generation systems (solar panels 1,... 1) and a line to the step-up transformer 6.
  • symbol 21 in FIG. 7 is a power phase detection apparatus connected to the connection point of the vacuum circuit breaker 7 and the disconnecting switch 8, and detecting the power phase of a high voltage
  • the inverter 3 is an output phase adjustment device for feeding back the phase output from the power phase detection device 21 to the inverter 3 through the gate circuit 23.
  • the inverter 3 generates an alternating current having a phase that matches the detected phase of the high-voltage system and supplies it to the step-up transformer 6.
  • connection point of the vacuum circuit breaker 7 and the disconnector 8 where this phase is detected is arranged in the housing 13 so as not to connect other loads, an unexpected load may be connected. Absent. Therefore, there is little delay in the power factor in the feedback detected from this connection point, and the power factor 1 at the power receiving point can be realized more reliably.
  • the connection point between the vacuum circuit breaker 7 and the disconnecting switch 8 is arranged in the same housing 13 as the inverter 3, the phase signal of the connection point (power receiving point, supply point) of the high voltage system is transmitted in the housing 13. Easy to capture.
  • a load switch (LBS: air load switch) that protects and switches the line is used instead of the vacuum circuit breaker 7 and the disconnect switch 8.
  • the power phase signal is taken from the high voltage system side of the load switch.
  • the power phase detector 21 obtains phase information used for feedback control of the inverter 3 via the switch 28.
  • the switch 28 is connected to the contact a, so that the phase is determined from the connection point of the vacuum circuit breaker 7 and the disconnecting switch 8 as described above. Is detected.
  • the phase is detected from the input terminal to the switch 14 that switches to the connection terminal 15 as shown in FIG. To be.
  • An input terminal for output power to the switch 14 is connected to the contact b of the switch 28.
  • the switch 28 switches to the contact point b, and the phase of the output power input to the switch 14 detected by the power phase detector 21 (that is, the phase of the power output from the connection terminal 15). )
  • the inverter 3 is feedback-controlled. This makes it possible to achieve a power factor of 1 at the power receiving point even during an emergency evacuation such as a disaster.
  • this system can propose a configuration in which a plurality of output terminals are provided.
  • the first output terminal is used as an output terminal for supplying emergency evacuation power to other facilities other than one's own facility
  • the second output terminal is used as power for one's own facility. Can be used as an output terminal.
  • FIG. 8 is a configuration block diagram of a power purchase grid interconnection device system in which power from the power generation devices 1 and 1 such as solar power generation can be output from a plurality of output terminals.
  • the power generation devices 1 and 1 such as solar power generation can be output from a plurality of output terminals.
  • FIG. 8 as an example, an example of supplying power from the solar cell module 1 is illustrated as a power supply device, but it is not necessary to explain that this may be another power generation facility such as wind power generation. However, since the price of selling electricity varies depending on the power generation equipment, measures should be taken. Components common to those in FIG. 1 are given the same reference numerals to indicate the relationship with FIG. That is, the configuration common to the configuration shown in FIG. 1 is not explicitly shown.
  • the output from the switch 14 is output to a plurality of output destinations so as to be branched and output.
  • the calibration instrument 83 and the calibration instrument 84 can acquire, store, and record the output power value output from the output A and output B as the integrated value of the numerical data. Thereby, for example, when the emergency evacuation power supply is prolonged, the value of the power supply amount between both the supply source and the supply destination can be confirmed with respect to the power supply with the supply destination. It provides a means.
  • one of the output destinations A and B is forcibly cut off, and the remaining One solution can be proposed to supply continuously. For example, the output of the output terminal with the higher priority is continued and the output of the output terminal with the lower priority is shut off. Or, for example, the output of the terminal with the smaller required power supply capacity is continued within a range not exceeding the limit capacity of the supplied power of the solar cell modules 1, 1, and the required power supply capacity The larger output is cut off and stopped.
  • the component that blocks the output is the blocking unit 81 or the blocking unit 82 in FIG.
  • the output cutoff control unit 80 performs the control.
  • the output cutoff control unit 80 acquires and stores the power generated by the solar cell modules 1 and 1 as the power value T, and sums the output power (a and b) from the output terminal A and the output terminal B.
  • the blocking unit 81 or blocking unit 82 of one output circuit is blocked.
  • the interruption unit 81 is continuously supplied with power by the control signal of the output interruption control unit 80, but the interruption unit 82 is interrupted, so that the power supply to the output terminal B is not performed. The state of not being performed is shown.
  • the flow chart of FIG. 9 explains the procedure in this case.
  • the power supply to the output terminal A has priority over the power supply to the output terminal B.
  • Information on the priority of the output destination is stored in the output cutoff control unit 80.
  • a power value T that is a value of supplied power (which may be the maximum value) that is acquired or stored in advance, and a plurality of values
  • the sum (a + b) of the output power to the supply destination is compared (step 92) and the sum (a + b) of the power exceeds the power value T (step 92-YES), for example, exceeds the limit capacity of the supplied power
  • a shutoff control signal is output to the shutoff unit 82, and the output to the output terminal B is shut off, or the shutoff is continued (step 94). If the total output power (a + b) does not exceed the power value T (step 92-NO), the output to the output terminal B is continued or returned (step 93).
  • the power value T is compared with the output power a to the output terminal A (step 96), and the output power a exceeds the power value T (step 96-YES).
  • the control signal of interruption is outputted to the interruption unit 81, and the output of the output terminal A is interrupted or, if already interrupted, the interruption is continued (step 98). If the output power a does not exceed the power value T (step 96-NO), the output to the output terminal A is continued or returned (step 97).
  • the embodiment of the flowchart of FIG. 9 exemplifies an embodiment in which the output of the output terminal with the higher priority is continued and the output of the output terminal with the lower priority is mainly cut off.
  • the output terminal A is an example in which the power supply priority is higher than that of the output terminal B.
  • the output terminals A and / or B can be returned from the shut-off state based on appropriate judgment criteria (steps 93 and 97).
  • the process returns to step 92, and the procedure for determining whether or not to shut off the output terminals A and B is entered again.
  • the output of the terminal having the smaller power supply capacity required is continued in a range that does not exceed the limit capacity of the power supply of the solar cell modules 1, 1.
  • An embodiment in which the output with the larger power supply capacity is cut off will be described.
  • the output cutoff control unit 80 starts processing (step 100) under the condition of a> b, it is the value of supplied power (which may be the maximum value) acquired or stored in advance.
  • the power value T is compared with the sum (a + b) of output power to a plurality of supply destinations (step 102), and the sum (a + b) of the power exceeds the power value T (step 102-YES).
  • a cutoff control signal is output to the cutoff unit 81, and when the output to the output terminal A is cut off or is already cut off, the cutoff is continued (step 104). If the total power (a + b) does not exceed the power value T (step 102-NO), the output to the output terminal A is continued or the output is restored (step 106). As described above, the output terminal A once shut off can be returned from the shut-off state based on an appropriate judgment criterion (step 106). After the connection state of the output terminal A is restored, the process returns to step 102 and the procedure for determining whether or not to shut off the output terminal A is entered again.
  • the embodiment of the flowchart of FIG. 10 illustrates an embodiment in which the output terminal B requires a smaller power value to supply power than the output terminal A (a> b).
  • the power value T, the power value a, and the power value b in the above-described embodiments of FIGS. 8 to 10 are the maximum value, the specification value, the rated value, or the power value generated by the power generation facility such as the solar cell module, or the like.
  • the maximum value, the specification value, and the rated value of the power used in the load required at the supply destination from the output terminals A and B may be used.
  • the output terminal B is blocked or the output terminal A is blocked.
  • the procedure for performing the re-output of the output terminal B and the re-output of the output terminal A after the shut-off is described for the return operation.
  • Step 92, Step 96, and Step 102 in which the power values are compared and determined, if the output terminal B is re-output and the output terminal A is re-output, the output power is Under appropriate judgment such as confirmation of a state where the power value T is not exceeded, the output terminal connection is restored so that these outputs are output again.
  • the embodiments of the flowcharts of FIGS. 9 and 10 may be changed as appropriate, and these embodiments are within a range that can be sufficiently predicted by those skilled in the art. .
  • the grid connection device for power purchase using natural energy power generation such as solar power generation and wind power generation
  • it is usually a facility corresponding to the power purchase system. Therefore, it is possible to provide a configuration that can output power to another system such as a highly public facility as an emergency evacuation use at the time of emergency evacuation such as a disaster (for example, an earthquake disaster).
  • this invention can provide the safe environment of the connection construction to the said different system

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  • Engineering & Computer Science (AREA)
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  • Supply And Distribution Of Alternating Current (AREA)
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  • Inverter Devices (AREA)

Abstract

La présente invention concerne un dispositif de raccordement au réseau destiné à l'achat d'énergie et permettant de se raccorder au réseau à haute tension ou très haute tension d'un fournisseur d'énergie, disposant d'une conception compacte, empêchant le raccordement d'une charge entre un conditionneur d'énergie et un point de raccordement, et ne présentant aucun retard de facteur de puissance. Le dispositif de raccordement au réseau destiné à l'achat d'énergie et fournissant de l'énergie solaire ou éolienne à un réseau haute tension (11) existant de la présente invention comprend : un conditionneur d'énergie (2) comprenant un onduleur (3) qui convertit le courant continu produit en courant alternatif et un réacteur (4) ; un transformateur élévateur (6) qui convertit le courant alternatif en sortie du conditionneur d'énergie (2) en énergie haute tension ; et une unité de commutation (14) disposée entre le transformateur élévateur (6) et le réseau d'énergie haute tension existant et qui fournit de l'énergie en sortie à un réseau séparé (18). Le dispositif de raccordement au réseau est caractérisé en ce que le conditionneur d'énergie (2), le transformateur élévateur (6) et un disjoncteur (7) sont disposés dans le même boîtier.
PCT/JP2013/070069 2012-10-31 2013-07-24 Dispositif de raccordement au réseau destiné à un système d'achat d'énergie et permettant de gérer un état anormal du réseau d'énergie pendant des catastrophes et procédé connexe WO2014069054A1 (fr)

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JP2012240063A JP5596102B2 (ja) 2012-10-31 2012-10-31 災害時の電力系統の異常事態に対応可能な電力買取システム用系統連系装置、及び当該電力買取システム用系統連系装置を用いた災害等の緊急避難時における電力の緊急出力方法

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104135022A (zh) * 2014-08-19 2014-11-05 四川省科本哈根能源科技有限公司 一种风光并行发电运行方法
CN110546836A (zh) * 2017-04-21 2019-12-06 利塔尔两合公司 用于对特别是布置在开关柜中或组装系统上的部件的连接工艺进行自动化支持的方法和系统
JP7064949B2 (ja) 2018-05-15 2022-05-11 河村電器産業株式会社 キュービクルのモニタ装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015192567A (ja) * 2014-03-28 2015-11-02 京セラ株式会社 電力配線切換方法、電力配線切換装置、および電力制御装置
JP6453585B2 (ja) * 2014-08-25 2019-01-16 京セラ株式会社 電力制御装置、蓄電装置、電力制御システム及び電力制御方法
CN106253110B (zh) * 2016-08-30 2018-06-19 宁波奥克斯高科技有限公司 一种紧凑型风力发电箱变装置及安装方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012117751A1 (fr) * 2011-03-01 2012-09-07 シャープ株式会社 Système de production d'énergie électrique
WO2012124131A1 (fr) * 2011-03-15 2012-09-20 オムロン株式会社 Dispositif de commande de puissance et procédé de commande de puissance

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012117751A1 (fr) * 2011-03-01 2012-09-07 シャープ株式会社 Système de production d'énergie électrique
WO2012124131A1 (fr) * 2011-03-15 2012-09-20 オムロン株式会社 Dispositif de commande de puissance et procédé de commande de puissance

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104135022A (zh) * 2014-08-19 2014-11-05 四川省科本哈根能源科技有限公司 一种风光并行发电运行方法
CN104135022B (zh) * 2014-08-19 2016-03-23 四川省科本哈根能源科技有限公司 一种风光并行发电运行方法
CN110546836A (zh) * 2017-04-21 2019-12-06 利塔尔两合公司 用于对特别是布置在开关柜中或组装系统上的部件的连接工艺进行自动化支持的方法和系统
CN110546836B (zh) * 2017-04-21 2021-08-24 利塔尔两合公司 用于对连接工艺进行自动化支持的方法和系统
JP7064949B2 (ja) 2018-05-15 2022-05-11 河村電器産業株式会社 キュービクルのモニタ装置

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