WO2011039586A1 - 電力管理システム - Google Patents
電力管理システム Download PDFInfo
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- WO2011039586A1 WO2011039586A1 PCT/IB2010/002285 IB2010002285W WO2011039586A1 WO 2011039586 A1 WO2011039586 A1 WO 2011039586A1 IB 2010002285 W IB2010002285 W IB 2010002285W WO 2011039586 A1 WO2011039586 A1 WO 2011039586A1
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- Prior art keywords
- power
- information
- conditioner
- meter
- grid
- Prior art date
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Classifications
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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
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
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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
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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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
- 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
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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
- 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
- H02J2300/28—The renewable source being wind energy
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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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/30—The power source being a fuel cell
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/30—State monitoring, e.g. fault, temperature monitoring, insulator monitoring, corona discharge
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Definitions
- the present invention relates to a power management system that manages power by linking a power generation device such as a solar power generation device to a power system of a commercial power source.
- the power generated by the solar battery is the same as the AC power of the commercial power supply by the power conditioner having an inverter or the like. And is linked to the power system of the commercial power source.
- the power conditioner is a device that converts the electric power generated by the solar cell so as to match the voltage, frequency, and phase of the power of the commercial power source.
- Patent Document 1 describes an example. The power conditioner described in Patent Document 1 is designed to boost the voltage of DC power generated by a solar cell with a boosting booster and then convert it into AC power with an inverter and output it.
- the power conditioner links the power generated by the solar cell to the power system of the commercial power supply, converts it to a voltage higher than the voltage of the power system of the commercial power supply, and supplies the output power to the electrical equipment.
- surplus power that was not consumed by these electrical devices can be back-supplied (sold) to the power system of the commercial power supply.
- Patent Document 1 Japanese Patent Laid-Open No. 2 0 7-7-9 7 3 1 0
- the power conditioner makes the voltage of the output power higher than the voltage of the power system of the commercial power supply. If the same power is output at the same time, there is a risk that the voltage of the commercial power system will increase significantly. And this voltage rise is caused by the power of commercial power There is a concern that power fluctuations exceeding the allowable value may occur in the grid power, and the voltage difference between the voltage of the power conditioner output power and the voltage of the utility power grid is reduced to reduce the output power of the conditioner. Inconveniences such as reducing the amount of power output to the power system of the commercial power supply (the amount of power sold) will also occur. Summary of the Invention
- the present invention has been made in view of such a situation, and even when a large number of power generation devices such as solar cells are connected, power management capable of stabilizing the power quality as a power system of a commercial power source. Provide a system.
- a power management system connected to an electric power system including a commercial power source, the electric power generating device generating electric power, the electric device consuming electric power, and the electric power system connected to the electric power system And a power meter that detects the amount of power that is input from the power system and the amount of power that is output to the power system, and a power conditioner that is connected to the power generation device and the electrical device via each power line,
- the power management system is based on the amount of power input from the power system and the amount of power output to the power system generated by the power generation device and the amount of power consumed by the electrical device.
- the power conditioner outputs the power generated by the power generator based on the grid linkage information to the power grid, and
- the grid link information is provided from the management center that manages the power of the power grid and the power conditioners of other power management systems.
- the power meter receives the grid linkage information from the management center that manages the power of the power grid via first communication means, and the power conditioner receives the power meter via second communication means. To obtain the grid linkage information.
- the power meter receives the grid link information from the power meter of the management center that manages the power of the power grid and the other power management system via first communication means.
- the quality of the AC power (frequency, voltage, etc.) of the commercial power system is stabilized to a specified state, and the power of the power generator such as a private power generator (solar power generator) is connected to the commercial power supply. After being linked to the power system, the power is output to the commercial power system.
- the power of the power generator is adjusted to the same quality as the AC power of the commercial power grid, and is adjusted to a voltage higher than the voltage of the commercial power grid. Supplied to the power system.
- the voltage of the power system of the commercial power source will increase, and the voltage increase of the power system of the commercial power source will This reduces the voltage difference between the output voltage and the amount of power that can be output to the utility power grid.
- the grid link information which is information related to the stabilization of the power of the commercial power grid received from the management center by the power meter, is ⁇ It will also be shared by the conditioner, and the output from the power conditioner to the power system of the commercial power source of the power generator will be performed based on the grid linkage information. Since the grid linkage information is information related to the stabilization of the power of the power system of the commercial power supply, power output to the power grid of the commercial power supply performed by the power conditioner based on this information is suitably performed. Become.
- the power conditioner can output power to the power system of the commercial power source at an appropriate timing based on the grid linkage information. As a result, according to this power management system, the power quality is stabilized, for example, the voltage rise of the power system of the commercial power supply can be suppressed.
- the grid connection information is reliably and accurately transmitted from the management center to the power meter through the first communication means managed in the same way as the power system of the commercial power supply, such grid link information is transmitted to the power meter.
- the conditioner By using the conditioner, the output power can be more accurately linked to the grid, and the power quality of the commercial power grid can be kept stable.
- a plurality of power generation devices are provided, and the power generated by one power generation device among the plurality of power generation devices is the other power generation device of the plurality of power generation devices.
- the power may be stored in a power storage device that stores the power.
- the power generated by the power generation device can be stored in the power storage device, the power generated by the power generation device can be supplied to the power of the commercial power source at a more appropriate timing based on the system linkage information. It can be supplied to the grid.
- the power can be efficiently output to the power system of the commercial power source based on the grid linkage information regardless of the generation timing.
- the power generation device can output more of the generated power to the power system of the commercial power supply.
- the power conditioner determines that the power generated by the one power generation device cannot be output to the power system of the commercial power source based on the grid linkage information, the power conditioner stores the power not consumed by the electrical device. The device can also be charged.
- the one power generation device When the power conditioner determines that the power generated by the one power generation device can be output to the power system of the commercial power source based on the grid linkage information, the one power generation device is generated.
- the power stored in the power storage device may be output from the power storage device to the power system of the commercial power source.
- the power generation device when the power generated by the power generation device can be output to the power system of the commercial power source based on the determination based on the grid linkage information, the power generation device is generated in advance and temporarily stored in the power storage device.
- the power stored in can be output to the commercial power grid under suitable conditions. Therefore, an increase in the amount of output power can be expected.
- it when power is output to the power system of the commercial power supply, it can be output efficiently, and there is no risk that the output will destabilize the power quality of the power system of the commercial power supply. Can be.
- the management center is acquired as the grid linkage information from the power conditioner corresponding to the power meter connected to the power system of the commercial power source to the power meter via the second communication means.
- the information on the status of the power generation device is taken in via the first communication means via the power meter, and the power conditioner supplies power to the power system of the commercial power source based on the fetched information. It is also possible to generate grid linkage information including output conditions that can be output.
- the power conditioner outputs power to the power system of the commercial power source based on the output condition included in the grid linkage information generated based on the status of the power generation device.
- the conditioner will be controlled by the management center, and the power quality of the commercial power system will be improved.
- the power generation device further includes a solar power generation device, and the information on the status of the power generation device indicates power generation information indicating an amount of power generated by the solar power generation device and an environmental condition around the solar power generation device.
- Illuminance information indicating the illuminance of light that illuminates the solar power generation device is included as environmental information, and the management center is calculated from the illuminance information and the power generation information of the solar power generation device.
- An output condition included in the grid linkage information may be generated based on the amount of power generated by the system.
- the solar power generation device Since the output condition included in the grid linkage information is generated based on the power generation amount of the solar power generation device calculated from the power generation information and the illuminance information that is environment information, the solar power generation device The power generated can be efficiently output to the power system. As a result, more appropriate output conditions can be provided to the power generator, and the power system of the commercial power supply is stabilized and the efficiency of the power generated by the power generator is promoted. It is done.
- the power system of the commercial power supply is provided with a plurality of the power meters connected thereto, and the management center outputs the illuminance information and the illuminance information respectively input through the plurality of power meters.
- a change in illuminance of the photovoltaic power generation apparatus corresponding to each power meter is predicted from position information indicating the position where the power meter is obtained from the power meter, and the illuminance change is based on the predicted change in illuminance. It is also possible to create system linkage information.
- the illuminance information measured through each power meter whose position is specified based on the position information is collected, and the solar power corresponding to each power meter is collected based on the distribution of the illuminance information.
- the accuracy of the prediction of the power generation amount of the photovoltaic power generation device is improved, and the grid linkage information generated based on the prediction improves the stabilization of the power system of the commercial power supply.
- the power conditioner measures and stores past power operation data, and stores the stored data.
- the management center can predict the power consumption according to the power conditioner with higher accuracy, so that it is possible to systematically stabilize the power system of the commercial power supply. become able to.
- the management center and the power meter are relay-communicated via a parent device provided on a pillar, and the first communication means includes the management center and the parent device, and the parent device and the power meter.
- Communication between the main unit and the power meter can be performed by wireless communication or wired communication, and when the system linkage information is not received, the power conditioner is based on a value generated appropriately at random.
- the power generated by the power generator can be output to the power system.
- the power meter when the communication between the power meter and the base unit is performed wirelessly, the power meter does not require communication wiring, and is required for wiring the communication line to the power meter. Time and place are omitted.
- the communication equipment when communication between the power meter and the main unit is performed by wire, the communication equipment is simple and stable communication is ensured. For example, if wired communication is power line carrier communication, it becomes possible to perform wired communication between the power meter and the base unit without the need for new wiring for communication, and the power management system is reduced in wiring.
- FIG. 1 is a configuration diagram showing functional blocks of a schematic configuration of a power supply system that constitutes a part of the power management system in a first embodiment that embodies the power management system according to the present invention.
- FIG. 2 is a configuration diagram showing a specific configuration of the power management system of the embodiment.
- FIG. 3 is a schematic diagram schematically showing communication between the power meter and the power conditioner according to the embodiment.
- FIG. 4 is a schematic diagram schematically showing communication between the linkage server and the power conditioner according to the embodiment.
- FIG. 5 is a relationship diagram showing the relationship between each device regarding the power sale processing of the power conditioner of the embodiment.
- FIG. 6 is a schematic diagram of a plurality of power supply systems linked to the power management system of the embodiment.
- FIG. 7 is a diagram illustrating a second embodiment of the power management system according to the present invention, in which communication between a power meter and a power conditioner is performed via an external network. The schematic diagram shown about an aspect.
- FIG. 8 is a schematic diagram showing a case where communication between a power meter and a power conditioner is performed via a server of an external network in a third embodiment that embodies the power management system according to the present invention.
- FIG. 9 shows a case where communication between a power meter and a power conditioner is performed through an electric power company connected to an external network in a fourth embodiment that embodies the power management system according to the present invention.
- FIG. 10 is a schematic diagram showing an example of communication in each of the above embodiments, where (a) shows an example in which communication between the parent device and the power meter is wireless, and (b) shows a power meter and power. An example is shown when the communication with the conditioner is wireless.
- FIG. 11 is a schematic diagram illustrating an example in which communication between the power meter and the power conditioner is power line carrier communication (PLC) in each of the embodiments.
- PLC power line carrier communication
- FIG. 12 is a schematic diagram showing an example in which power is supplied from a storage battery to a power meter when the power system fails in the respective embodiments.
- FIG. 13 is a schematic diagram showing an example of an aspect of the power meter according to each of the embodiments.
- FIG. 14 is a perspective view showing an example in which a camera is provided in the power meter of each of the embodiments.
- Figure 1 shows the power supply system 1 that forms part of the power management system.
- the house is provided with a power supply system 1 that supplies power to various devices (lighting equipment, air conditioners, home appliances, audiovisual equipment, etc.) installed in the home.
- various devices lighting equipment, air conditioners, home appliances, audiovisual equipment, etc.
- the power supply system 1 uses the commercial AC power source (commercial power source) 2 for household operation as well as operating various devices, and also supplies the solar cell power generated by sunlight 3 to various devices as a power source.
- the power supply system 1 supplies power not only to the DC device 5 that operates by inputting DC power from a DC power source (DC power source) but also to the AC device 6 that operates by inputting AC power from the AC power source 2.
- DC power source DC power source
- the power supply system 1 includes a power conditioner 5 0 of the power supply system 1 Control unit 7 and DC distribution board (with built-in DC breaker) 8 are provided. Further, the power supply system 1 is provided with a control unit 9 and a relay unit 10 as devices for controlling the operation of the DC device 5 in the house.
- the control unit 7 is connected to an AC distribution board 11 1 for branching AC power via an AC power line 12.
- the control unit 7 is connected to a commercial AC power supply 2 through the AC distribution board 11 and connected to the solar cell 3 through a DC power line 13.
- the control unit 7 takes in AC power from the AC distribution board 11 and takes in DC power from the solar cell 3 and converts these powers into predetermined DC power as a device power source.
- the control unit 7 outputs the converted DC power to the DC distribution board 8 via the DC power line 14 or to the storage battery 16 via the DC power line 15. To store electricity.
- the control unit 7 can not only take AC power from the AC distribution board 11 but also convert the power of the solar cell 3 and storage battery 16 to AC power and supply it to the AC distribution board 11 .
- the control unit exchanges data with the DC distribution board 8 via the signal line 17.
- the control unit 7 is connected to an illuminance meter 42 that measures the illuminance of the light that illuminates the solar cell 3, and illuminance information as environmental information such as the illuminance value is transmitted from the illuminance meter 42.
- the DC distribution board 8 is a type of breaker that supports DC power.
- the DC distribution board 8 branches the DC power input from the control unit 7 and outputs the branched DC power to the control unit 9 via the DC power line 1 8 or the DC power line 1 9 Or output to relay unit 10 via. Further, the DC distribution board 8 exchanges data with the control unit 9 through the signal line 20 and exchanges data with the relay unit 10 through the signal line 21.
- the power supply system 1 includes a power conditioner 50 that adjusts the power operation in the power supply system 1 and a power control unit 7 and a DC distribution board 8. In other words, the power conditioner 50 is connected to the AC distribution board 11, the solar battery 3, the storage battery 16, and the DC devices 5 via respective power lines.
- the power conditioner 50 measures the power information of AC power supplied to and reversely supplied (input / output) to / from the AC power source 2, and the power information of the power generated by the solar cell 3 (power generation information).
- the measurement of the power information of the DC power consumed by the C device 5 is performed.
- AC power information includes types such as voltage, current, power, frequency, and phase
- DC current power information includes types such as voltage, current, and power.
- the selected power information is measured by the power conditioner 50. As a result, the power conditioner 50 collects the power information of the AC power source 2 and the power information of the solar cell 3 and the DC device 5.
- a plurality of DC devices 5, 5... are connected to the control unit 9. These DC devices 5 are connected to the control unit 9 via a DC supply line 22 that can carry both DC power and data by the same wiring.
- DC supply line 2 2 is the DC power used as the power source for DC equipment.
- a communication signal for transmitting data by a high frequency carrier wave is superimposed.
- both power and data are conveyed to the DC device 5 by a pair of wires.
- the control unit 9 acquires the DC power of the DC device 5 through the DC power line 18 and what DC device 5 is used based on the operation command obtained from the DC distribution board 8 through the signal line 20. Know what to control. Then, the control unit 9 outputs DC power and an operation command to the instructed DC device 5 via the DC supply line 22 2 to control the operation of the DC device 5.
- the control unit 9 is connected via a DC supply line 22 to a switch 23 that is operated when switching the operation of the DC device 5 in the house. Further, for example, a sensor 24 for detecting a radio wave transmitted from an infrared ray remote controller is connected to the control unit 9 via a DC supply line 22. Therefore, not only the operation instruction from the DC distribution board 8 but also the operation of the switch 23 and the detection of the sensor 24, the communication signal is sent to the DC supply line 22 and the DC device 5 is controlled.
- the control unit 9 can transmit power information such as the amount of power consumed by each DC device 5 detected there to the power conditioner 50 (DC distribution board 8) via the signal line 20.
- the power conditioner 50 is configured to collect the power information of each DC device 5 connected to the control unit 9. Further, the DC device 5 connected via the DC supply line 22 transmits power information such as the amount of power detected by the DC device 5 itself to the power conditioner 50 through the control unit 9 to thereby transmit the power conditioner. It is also possible to consolidate to 50.
- a plurality of DC devices 5, 5... are connected to the relay unit 10 via individual DC power lines 25.
- the relay unit 10 acquires the DC power of the DC device 5 via the DC power line 19 and operates which DC device 5 based on the operation command obtained from the DC distribution board 8 via the signal line 21. Know what to do.
- the relay unit 10 controls the operation of the DC device 5 by instructing or turning on / off the power supply to the DC power line 25 with the built-in relay with respect to the C device 5.
- the relay unit 10 is connected to a plurality of switches 26 for manual operation of the DC device 5, and the power supply to the DC power line 25 is switched to the relay by the operation of the switch 26.
- the DC device 5 is controlled by turning it on / off.
- the relay unit 10 can transmit power information such as the amount of power consumed by each DC device 5 detected there to the power conditioner 50 (DC distribution board 8) via the signal line 21. it can. As a result, the power conditioner 50 collects the power information of each DC device 5 connected to the relay unit 10.
- the power conditioner 50 has various kinds of power information in the power supply system 1 such as the power information measured by itself and the power information detected by the control unit 9 relay unit 10. These power information can be used as power operation data in the power supply system 1.
- the power conditioner 50 can also generate predicted consumption information, which is the current power consumption, based on power operation data obtained from various types of power information. That is, the power conditioner 50 also has a function as a prediction control unit for generating predicted consumption information.
- the power conditioner 50 is based on power information measured by itself, power information detected by the control unit 9 or relay unit 10 and power information received from power conditioners of other power supply systems. System linkage information can be generated.
- a wall outlet or a floor outlet is connected to the DC distribution board 8 via a DC power line 28. If a DC device plug (not shown) is inserted into the DC outlet 27, DC power can be supplied directly to the device.
- the power meter 29 Between the commercial AC power source 2 and the AC distribution board 11 is connected an electric power meter 29 that can remotely measure the amount of commercial AC power source 2 used.
- the power meter 2 9 functions not only remote meter reading power usage of the commercial power supply, for example, power line communication (PLC: P OW er L ine C o mm unication) of and the wireless communication function is installed.
- the power meter 29 sends the meter reading result to an electric power company or the like via power line carrier communication or wireless communication.
- the communication between the power meter 29 that transmits the meter reading result to the electric power company and the electric power company is performed between the electric power company and the utility pole via a known communication line.
- power line carrier communication is performed using the power line 2A connected to the step-down transformer TR (see FIG. 2) of the same power pole as a communication medium.
- the power supply system 1 is provided with a network system 30 that enables various devices in the home to be controlled by network communication.
- the network system 30 is provided with a home server 31 as a control unit of the network system 30.
- the home server 31 is connected to a management server 32 outside the home via an external communication network N such as the Internet, and is connected to the home equipment 3 4 via a signal line 33.
- the in-home server 31 operates using DC power acquired from the DC distribution board 8 via the DC power line 35 as a power source.
- a control box 36 that manages operation control of various devices in the home by network communication is connected to the home server 31 via a signal line 37.
- the control box 36 is connected to the control unit 7 and the DC distribution board 8 via the signal line 17 and can directly control the DC device 5 via the DC supply line 38.
- a gas / water meter 39 that can remotely measure the amount of gas used or the amount of water used is connected to the control box 36, and also connected to the operation panel 40 of the network system 30.
- the operation panel 40 is connected to a monitoring device 41 composed of, for example, a door phone slave, a sensor, or a camera.
- the home server 3 1 When the home server 31 receives an operation command for various devices in the home via the external communication network N, the home server 3 1 notifies the control box 36 and instructs the various devices to operate according to the operation command. Operate control box 3 6.
- the in-house server 3 1 stores various information acquired from the gas Z water meter 39 through the external communication network N.
- the monitoring device 4 1 accepts that an abnormality has been detected from the operation panel 40, the fact is also provided to the management server 32 via the external communication network N.
- FIGS. Fig. 2 is a configuration diagram specifically showing the configuration of the power management system
- Fig. 3 is a diagram schematically showing the configuration of the communication line between the power meter 29 and the power conditioner 50.
- FIG. 4 is a diagram schematically showing a communication line between the power conditioner 50 and the grid connection server 61.
- the power meter 29 and the power conditioner 50 are substantially connected via the AC distribution board 11.
- the dotted line 2 B is shown.
- a power supply system 1 provided in a house or the like is connected to a power system of an AC power source 2 managed by a power company 60 through a power meter 29.
- a plurality of power meters 29 are connected to the power system of the AC power supply 2 via different lead-in power lines 2 A from the step-down transformer TR.
- the power meter 29 is provided with a slave unit 6 8 having a function of performing power line communication with the master unit 6 6 on the power pole.
- the slave unit 68 is connected to the step-down transformer TR through the power signal line 67 and the lead-in power line 2A. That is, the lead-in power line 2 A carries AC power between the power system and the power meter 29 and power line carrier communication as a communication medium between the master unit 6 6 and the slave unit 6 8 of the power meter 29. Carry the signal.
- the power company 60 has a dedicated communication line 6 4 that is used to remotely measure the amount of power measured by the power meter 29, in accordance with the wiring of the power system of the AC power supply 2.
- the master unit 6 6 is connected to the line 6 4 via the communication line 6 5 and the media converter 6 3 so that they can communicate with each other.
- the master unit 6 6 enables transmission and reception of communication signals between the communication line 64 and the power signal line 67, and converts the received signal system into a signal system for transmission.
- a meter reading server (not shown) of the electric power company 60 is communicably connected to the communication line 64.
- the meter reading server acquires the amount of power (meter reading result) measured by each power meter 29 connected to be communicable via the communication line 64, and records the acquired amount of power and the like.
- the so-called remote meter reading is to be done.
- the electric power company 60 also has a grid connection server 61 that manages information for stabilizing the AC power flowing through the power supply system of the commercial power supply.
- the grid connection server 61 is connected to the communication line 62 and the medium.
- the communication line 6 4 is communicably connected to the communication line 6 4 via the first converter 63.
- the grid connection server 61 of the electric power company 60 is connected to each electric camera 29, which is also connected to the communication line 64, so that they can communicate with each other via the communication line 64. It has become.
- the grid linking server 61 is reversely supplied from each of the power generation of a plurality of power plants owned by the power company 60, the power consumption of each power system divided into a plurality of regions, and the solar system 3 from the solar cell 3 etc.
- system linkage information that is information for stabilizing the AC power of the power system managed by the power company 60 is generated and stored. That is, it communicates with the grid connection server 61
- Each of the power meters 29 that can be connected can acquire grid link information for stabilizing the above-described power grid from the grid link server 61.
- the grid-linking server 61 is responsible for each power generation so that appropriate power is supplied to the power system of the commercial power source based mainly on the prediction of the power consumption of the commercial power system based on past performance.
- the grid link information that defines the power that each solar cell 3 outputs to the power system of the commercial power supply is generated.
- the grid link information is generated based on the power company's past results, power information such as predicted consumption information, etc. This is done to improve the accuracy of the system linkage information.
- communication between the grid connection server 61 and the power meter 29 is performed by the first communication means.
- the first communication means is connected to the grid link.
- the server 61 and the power meter 29 are communicably connected to each other, and are composed of a communication line 6 4, a master unit 6 6, a retractable power line 2 A, a slave unit 6 8 of the power meter 29.
- the first communication means is communication between the power company 60 and the base unit 66 on the power pole, and communication between the base unit 66 on the power pole and the power meter 29. Consists of.
- the power conditioner 50 is provided with a sub slave unit 70 having a function capable of communicating with the slave unit 6 8 of the power meter 29, and the slave unit 6 of the power meter 29. 8 and the sub-slave unit 70 of the power conditioner 50 are in a wired communication via a dedicated communication line 69 connecting them.
- the power meter 29 and the power conditioner 50 carry AC power through the power line 2 B and carry communication signals through the dedicated communication line 69.
- communication between the slave unit 68 of the power meter 29 and the sub slave unit 70 of the power conditioner 50 is not limited to wired communication performed via the dedicated communication line 69.
- the second communication means is configured by a configuration in which the power meter 29 and the power conditioner 50 are communicably connected. That is, the second communication means is a child of the power meter 29. It consists of the unit 68, the sub-slave unit 70 of the power conditioner 50, and the dedicated communication line 69.
- the power meter 29 is provided with a storage device 29 DB, and the storage device 29 DB has the same AC power supplied and reversely supplied via the power meter 29.
- the power information 29 J including the current, voltage, power amount, etc. detected by the power meter 29 is stored.
- the power conditioner 50 is provided with a storage device 50 DB, and the storage device 50 DB includes power information including various kinds of power information and predicted consumption information collected in the power conditioner 50. 5 0 J is stored.
- the grid connection server 61 is provided with a storage device 61 DB, and the storage device 61 DB is supplied back to the power generation amount of the power plant, the power consumption of each power system, and the power system.
- Various kinds of power information 6 1 J including the amount of power is stored.
- the power meter 29 acquires the power information 50 J of the power conditioner 50 and stores the storage device 29. It can be stored in the DB as power information 29 J.
- the power;] conditioner 50 acquires the power information 29 J of the power meter 29 and stores it in the storage device 50 DB. Information 5 0 J can be stored.
- the grid connection server 61 and the power meter 29 are connected to each other so as to be able to communicate with each other, the grid connection server 61 acquires the power information 29 J of the power meter 29 and stores the storage device 6 1 Power information 6 1 J can be stored in DB.
- the power meter 29 can acquire the power information 61J of the grid connection server 61 and store it in the storage device 29 DB as the power information 29J.
- the grid connection server 61 and the power conditioner 50 can communicate with each other via the power meter 29, so the grid connection server 61 is a storage device for the power meter 29. 2 9 It is possible to acquire the power information 50 0 J of the power conditioner 50 through the DB and store it as the power information 61 J in the storage device 61 DB.
- the power conditioner 50 acquires the power information 6 1 J of the grid connection server 61 via the storage device 29 DB of the power meter 29, and acquires the power information 5 0 J in the storage device 50 DB. Can be stored as
- the storage device 6 1 DB of the grid connection server 61 also stores grid link information 61 K generated to stabilize the power system of the commercial power supply.
- this grid link information 61K is also acquired by the power meter 29 and stored in the storage device 29 DB in the same way as the grid information 61 of the previous grid link 61.
- the power conditioner 50 can share various types of power information 50 J and grid linkage information 50 K not only with the power meter 29 but also with the grid linkage server 61. Yes.
- Fig. 5 is a sequence diagram showing the information processing sequence of the power management system when the power conditioner 50 outputs the power generated by the solar cell 3 to the commercial power system.
- Fig. 6 4 is a schematic diagram of a power system of a communication line 6 4 and an AC power supply 2 connected to the system linkage server 61.
- FIG. 5 is a sequence diagram showing the information processing sequence of the power management system when the power conditioner 50 outputs the power generated by the solar cell 3 to the commercial power system.
- Fig. 6 4 is a schematic diagram of a power system of a communication line 6 4 and an AC power supply 2 connected to the system linkage server 61.
- the power system of AC power supply 2 has its AC power quality (frequency, voltage, etc.) stabilized in a predetermined state, and the power of the power generator such as solar cell 3 is the power of the commercial power supply to which it is connected. It is adjusted in the same way as the AC power quality of the power grid, and is output to the power grid of the commercial power supply after being linked to the grid.
- the power of the solar cell 3 is adjusted to the same quality as the AC power of the commercial power grid by the power conditioner 50, and when it is output to the commercial power grid, By adjusting the voltage to be higher than the grid voltage, it will be output to the utility power grid.
- the voltage of the power system of the commercial power source may be increased.
- such a voltage increase in the power system of the commercial power source reduces the voltage difference between the output voltage of each power conditioner 50 (solar cell 3) and the voltage of the power system of the commercial power source, thereby reducing the power conditioner 5.
- the power conditioner 50 outputs the power of the solar cell 3 to the power system of the commercial power source based on the system link information 50 K acquired from the system link server 61. ing.
- the power conditioner 50 when the power conditioner 50 generates surplus power that is not consumed by the electrical equipment in the power generated by the solar cell 3 (step S 1 0), the power conditioner 50 outputs the surplus power.
- Power sale request information J1 that requests permission to output (sell power) from the power conditioner 50 to the power system of the commercial power supply is sent to the grid connection server.
- the power sale request information J 1 is the same as when the power information 50 0 of the power conditioner 50 is acquired by the grid connection server 61. Are transmitted to the grid connection server 61 via the slave units 6 8 and the main unit 6 6 on the utility pole in order.
- the grid connection server 61 When the grid connection server 61 receives the power sale request information J1 from the power conditioner 50, the power conditioner 50 as the grid link information 61K calculated based on various kinds of power information 61J etc.
- the power output conditions that are permitted, that is, the power purchase conditions for the electric power company 60 are set (step
- the grid link server 61 sends the grid link information 61 K with the output condition (power purchase condition) set to the power conditioner 50.
- the grid link information 6 1 K transmitted from the grid link server 6 1 includes the master unit 6 6 on the power pole, the slave unit 6 8 of the power meter 29, and the sub slave unit 70 of the power conditioner 50. Are transmitted to the inverter 50 in sequence.
- power conditioner 50 sends power to the utility power grid based on the output conditions (power purchase conditions) included in grid connection information 61 K.
- the power sale control for output (power sale) is performed (step S 30).
- the voltage output from the conditioner 50 is increased, whereby electric power is output from the power conditioner 50 to the power supply system of the commercial power supply.
- the power sale amount of the power conditioner 50 is transmitted to the grid connection server 61 as the power sale information J3.
- the power sale information J3 is also the same as when the power information 50 of the power conditioner 50 is acquired by the grid connection server 61.
- the power is transmitted to the grid connection server 61 via the slave unit 6 8 of the power meter 29 and the master unit 66 on the power pole in order.
- the grid connection server 61 can check the power sale status of the power conditioner 50, and stabilize the power system of the commercial power source together with the amount of power output by the power conditioner 50. Can be performed.
- a plurality of houses having a power supply system 1 are connected to the power system of the commercial power source.
- communication lines are arranged along the power system of commercial power.
- the 6 4 is communicably connected to a plurality of power supply systems 1 for each of the master units 6 6 A to 6 6 G adjacent to the step-down transformer provided separately in the power system of the commercial power source. That is, the plurality of power supply systems 1 AA, 1 AB, 1 AC, 1 AD connected to the master unit 6 6 A are connected to the grid connection server 61 and the other via the master unit 6 6 A and the communication line 64. Are connected so that they can communicate with each other. Similarly, a plurality of power supply systems 1 BA, 1 BB, and 1 BC connected to the master unit 6 6 B are connected to the grid connection server 61 and others via the master unit 6 6 B and the communication line 64. The plurality of power supply systems are communicably connected.
- multiple power supply systems 1 CA, 1 CB, 1 CC, 1 CD connected to the main unit 66 C and multiple power supply systems 1 DA, 1 DB, connected to the main unit 66 D 1 DC and 1 DD are communicably connected between the grid connection server 61 and other power supply systems via the corresponding master units 66 C and 66 D and the communication line 64.
- the FC and 1 FD are communicably connected between the system linkage server 61 and other plurality of power supply systems via the corresponding master units 66 E and 66 F and the communication line 64.
- a plurality of power supply systems 1 GA, 1 GB, 1 GC, and 1 GD connected to the base unit 66 G are also connected to the grid connection server 61 and other multiple units via the base unit 66 G and the communication line 64.
- the power supply systems are communicably connected.
- each power conditioner 50 is configured to supply power based on the grid linkage information, and when the grid linkage information is not received, the power conditioners 50 are randomly generated as appropriate. Based on the value, the power generated by the power generator is output to the power system.
- the power supply system 1 when the power supply system 1 wants to sell power, it first transmits the power sale request information J 1 to the grid connection server 61.
- the grid connection server 61 receives the power sale request information J1 from each of the plurality of power supply systems 1, the grid connection server 61 does not impair the power stabilization of the power system of the commercial power supply. Adjustment is made, and grid coordination information 50 K is generated, in which the adjustment result is set as the power purchase condition of each power supply system 1. Then, the generated grid linkage information 50 K is transmitted to the corresponding power supply system 1. Then, the power supply system 1 that has received the grid link information 50 K outputs (sells) power from the power conditioner 50 according to the power purchase conditions set by the grid link server 61. The stability of the power is maintained.
- the grid connection server 61 receives the power sale request information J 1 from each of the plurality of power supply systems 1 AA, 1 BA, 1 CA, 1 DA, 1 EA, 1 FA, 1 GA,
- the power stabilization of the power system of the commercial power supply is impaired.
- the period when each said electric power supply system can output electric power is adjusted.
- the power supply system 1 AA, 1 BA, 1 CA can output power only for a predetermined period from now.
- Power purchase conditions are set, and power supply systems 1 DA, 1 EA, 1 FA, 1 GA are set with power purchase conditions that can output power only after the elapse of the predetermined period. Then, each power conditioner 50 determines whether the power can be output to the power supply system of the commercial power source according to the power purchase condition, and the output of the power is controlled based on the determination. In this way, the power output to the power supply system to the power supply system of the commercial power supply is dispersed over time, and the power of the power supply system of the commercial power supply can be stabilized.
- One conditioner 50 stores the power that it wants to output, for example, in storage battery 16 and outputs the power stored in storage battery 16 when it can output power.
- the power generated by the solar cell 3 can be used effectively.
- the power generation amount of the solar cell 3 provided in the power supply system 1 greatly fluctuates depending on the illuminance of received sunlight.
- the fluctuation of this power generation amount is input from the power supply system of each commercial power supply by each power supply system.
- the amount of power output to the power system of the commercial power supply is greatly varied. In other words, if the amount of power that is input from or output to the power supply system of the commercial power supply of a large number of power supply systems 1 changes at the same time, the change in the amount of power of each power supply system 1 There is also a risk of destabilizing the power system.
- the illuminance information acquired by each power meter from the power conditioners 50 of each power supply system 1 AA to 1 GD is aggregated in the grid linking server 61, and each grid linking server 6 "I is aggregated.
- each power supply system 1 AA to 1 GD From the illuminance information and the position of each power supply system 1 AA to 1 GD corresponding to each illumination information, the change in illuminance due to cloud movement of each power supply system 1 AA to 1 GD is predicted, and In this way, fluctuations in the amount of power generated in the solar cell 3 due to changes in illuminance caused by the movement of clouds can be predicted, and the power system of the commercial power supply By setting power purchase conditions that do not impair power stabilization in each power supply system 1 AA to 1 GD, stabilization of power in the power system of the commercial power supply can be maintained.
- Position of elsewhere is grasped from the position of the corresponding step-down transformer and the base unit, detailed location is grasped by address registered for the power meter 2 9 for managing the power company 6 0.
- the power generation amount of the solar cell 3 can be predicted with high accuracy, and the power system of the commercial power supply can be highly stabilized. That is, for the prediction of illuminance, if the decrease in illuminance is measured in the order of the power supply systems 1 AD, 1 AC, 1 AB, 1 AA on the left side of FIG. Illuminance of power supply system 1 BA ⁇ 1 BC Power Next, it is predicted that the illuminance of the power supply system 1 CA ⁇ 1 CD connected to the main unit 6 6 C will gradually decrease.
- weather information generally provided as another illuminance prediction may be used in combination.
- the power supply system 1 decreases the illuminance of AD If is measured, a decrease in illuminance occurring in each subsequent power supply system 1 can be predicted.
- the power purchase conditions are set based on these forecasts, and the power supply to the power grid of the commercial power supply is changed to correspond to the expected increase or decrease in power consumption. As a result, it becomes possible to suitably maintain the power stabilization of the power system of the commercial power supply.
- the grid link information 6 1 K which is information related to the stabilization of power of the power grid received by the power meter 29 from the grid link server 61, is shared by the power conditioner 50.
- the power output from the power conditioner 50 to the power system of the commercial power supply is performed based on the system linkage information. Since the grid linkage information is information related to the stabilization of power in the power system of the commercial power supply, the power output to the commercial power grid by the power conditioner 50 based on the information is suitably performed. It becomes like this.
- the power conditioner 50 can output power to the power system of the commercial power source at an appropriate timing based on the system linkage information. As a result, according to this power management system, the power quality is stabilized, for example, the voltage rise of the power system of the commercial power supply can be suppressed.
- the grid connection information is reliably and accurately transmitted to the power meter 29 via the communication line 64 managed from the grid link server 61 in the same manner as the commercial power grid.
- the use of such grid linkage information by the power conditioner 50 makes it possible to more accurately link the output power to the grid, stabilizing the power quality of the commercial power grid. Will be able to maintain.
- the electric power generated by the solar cell 3 can be stored in the storage battery, the electric power generated by the solar cell 3 can be supplied to the commercial power supply power system at a more appropriate timing based on the grid linkage information. It becomes like this. In other words, by temporarily storing the power that must be consumed immediately after generation, the power can be output to the power system of the commercial power source based on the grid linkage information regardless of the generation timing. As a power system, the quality of the power is further stabilized. In addition, the solar cell 3 and the like can output more of the generated power to the commercial power system.
- the power generation pattern changes sequentially due to sunshine, and the power consumption pattern is a waste of power generated by the solar cell 3 whose power generation pattern does not match if it is not consumed. It can be stored in the storage battery. According to this, the power generated by the solar cell 3 can be efficiently output to the power system of the commercial power source based on the grid linkage information regardless of the timing of the power generation. In addition to stabilizing the power quality of the power grid, the solar cell 3 can output more of the generated power to the commercial power grid.
- the power of the power conditioner 50 can be output to the power system of the commercial power source under suitable conditions. As a result, an increase in the amount of output power can be expected. As a result, when power is output to the power system of the commercial power supply, it can be output efficiently and there is no risk that the output will destabilize the power quality of the power system of the commercial power supply. Can be done.
- the power conditioner 50 outputs power to the power system of the commercial power source based on the output conditions included in the grid linkage information generated based on the situation such as the power generation of the solar cell 3.
- the power quality of the power system of the re-commercial power source in which the power conditioner 50 is controlled by the grid connection server 61 is further improved.
- the output condition included in the grid linkage information is generated based on the power generation amount of the solar cell 3 calculated from the illuminance information and the power generation information, the power generated by the solar cell 3 is efficiently converted to the commercial power source.
- the power can be output to the power system.
- the grid connection server 61 can predict the power consumption according to the power conditioner 50 with higher accuracy, so it is necessary to systematically stabilize the power system of the commercial power supply. Will be able to.
- FIG. 7 is a diagram schematically illustrating a mode in which communication between the power meter 29 and the power conditioner 50 is performed via the external communication network N.
- the second embodiment is different from the first embodiment in that communication between the power meter 29 and the power conditioner 50 is performed via the external communication network N. Other than that, the second embodiment is the same as the first embodiment. Therefore, in the present embodiment, differences from the first embodiment will be mainly described, the same components as those in the first embodiment will be denoted by the same reference numerals, and detailed description will be omitted for convenience of explanation. .
- the slave unit 68 of the power meter 29 is connected to the master unit 66 so as to be communicable.
- Base unit 6 6 is communicably connected to electric power company 60 through communication line 64, and is also communicably connected to external communication network N. That is, the slave unit 68 of the power meter 29 is connected to the external communication network N via the master unit 66 so as to be communicable.
- the slave unit 68 of the power meter 29 has a logical relationship between the communication line 64 and the external communication network N depending on the destination of the communication. It has become possible to choose.
- the sub-slave unit 70 of the inverter 50 is connected to the home server 31 so as to be communicable, and is connected to the external communication network N via the home server 31 so as to be communicable.
- the slave unit 68 of the power meter 29 and the sub slave unit 70 of the power conditioner 50 are connected to the external communication network N so as to be able to communicate with each other, the slave unit of the power meter 29
- the unit 68 and the sub-unit 70 of the power conditioner 50 are connected to each other via the external communication network N so that they can communicate with each other.
- the power information 29 J of the power meter 29 and the grid link information 29 K from the grid link server 61 are transmitted to the power conditioner 50 via the external communication network N, and the power The power information 50 0 J of the conditioner 50 is also transmitted to the power meter 29 and the grid connection server 61 via the external communication network N.
- Power meter 29 and power conditioner 50 communicate with each other via external communication network N, eliminating the need for dedicated communication equipment for direct communication between power meter 29 and power conditioner 50. It becomes.
- the power meter 29 uses the communication device with the grid connection server 61 for the external communication network N, and the power conditioner is installed in the house.
- the power meter 29 and the power conditioner 50 can eliminate the need for direct communication devices. This will increase the degree of freedom in applying the power management system.
- FIG. 8 is a diagram schematically showing a mode in which communication between the power meter 29 and the power conditioner 50 is performed via the relay server 77 provided in the external communication network N.
- the relay server 7 7 in which the communication between the power meter 29 and the power conditioner 50 is provided in the external communication network N as compared with the second embodiment 7 7 This is the same as that of the second embodiment. Therefore, in the present embodiment, differences from the second embodiment will be mainly described, the same components as those in the second embodiment will be denoted by the same reference numerals, and the detailed description will be given for the convenience of description. Omitted.
- the external communication network N is connected to the slave unit 68 of the power meter 29 and the relay server 77 that can communicate with the sub slave unit 70 of the power conditioner 50.
- the slave unit 6 8 of the power meter 29 is communicated with the relay server 7 7 connected to the external communication network N via the master unit 6 6 to transmit power information addressed to the power conditioner 50.
- the sub-slave unit 70 of the power conditioner 50 communicates with the relay server 7 7 of the external communication network N via the in-home server 31 and communicates the power information 29 J and the system addressed to the power conditioner 50. Get link information 2 9 K.
- the power conditioner 50 stores the power information 5 0 J addressed to the power meter 29 in the relay server 7 7 temporarily, and the power meter 29 receives the power addressed from the relay server 7 7 to the power meter 29. Information 5 0 J is acquired. In this way, via the relay server 77, the degree of freedom in communication between the power meter 29 and the power conditioner 50 can be increased.
- effects equivalent to or equivalent to the effects (1) to (16) of the previous first and second embodiments can be obtained, and are listed below. Effects can be obtained.
- FIG. Figure 9 shows the communication between power meter 29 and power conditioner 50 It is a figure which shows typically the aspect performed via the information server 71 provided in the company 60.
- the information server 7 1 is provided in the electric power company 60, and the electric power company is connected to the external communication network N.
- the other points are the same as in the first embodiment. Therefore, in the present embodiment, differences from the first embodiment will be mainly described, the same components as those in the first embodiment will be denoted by the same reference numerals, and detailed description will be omitted for convenience of explanation. To do.
- the sub-slave unit 70 of the power conditioner 50 is connected to the home server 31 and the home server 31 is connected to the power company 60 via the external communication network N.
- the electric power company 60 is provided with an information server 71 that is not connected to the grid connection server 61 and is connected to the external communication network N.
- the electric power company 60 is connected to the power conditioner 50 via the parent device 6 6 and the child device 68 of the power meter 29, and is also connected to be able to communicate through the external communication network N. It is done.
- the communication line 64 dedicated to the power company 60 arranged along the power system of the commercial power supply has a high security level such as being physically separated from the external communication network N. Therefore, information that requires a high level of security, such as grid connection information 61 K, is transmitted from the power company 60 through the communication line 64, master unit 6 6, slave unit 6 8, and sub slave unit 70. Communicate to conditioner 50. In addition, information that does not require a very high level of security, such as the power information 50 0 J of the power conditioner 50 0, can be obtained from the power conditioner 50 through the home server 31 and the external communication network N. Can be communicated to the information server 7 1.
- each said embodiment can also be implemented in the following aspects, for example.
- the power conditioner 50 includes the control unit 7 and the DC distribution board 8 is illustrated.
- the power conditioner includes other devices, such as an AC distribution board, a control box, and a home server, as long as the power management system can suitably manage power.
- the DC distribution board may not be included. This increases the degree of freedom in the configuration of the power conditioner and increases the possibility of adopting it as a power management system.
- the case where the storage device 50 DB is provided in the power conditioner 50 is illustrated.
- the power conditioner is not limited to this. If it is possible to manage the storage device, the storage device itself may not be provided in the power conditioner. In such a case, power information may be stored in a home server or the like so that it can be accessed by a power conditioner. This increases the degree of freedom in the configuration of the inverter and increases the possibility of adopting it as a power management system.
- the environmental information is information related to the environment in which the power supply system is installed.
- information such as temperature, humidity, wind direction, and wind power may be used.
- the temperature and humidity can be used to predict changes in the power consumption of the air conditioner indoors, and the wind direction and wind can be used to predict cloud movement.
- the first communication means is exemplified when the communication between the grid connection server 61 and the power meter 29 is wired communication using the communication line 64 or the pull-in power line 2A as a communication medium. did.
- the present invention is not limited to this, and the communication between the main unit on the power pole and the power meter may be wireless communication as shown in Fig. 10 (a), for example. This eliminates the need for communication wiring between the power meter and the master unit, and eliminates the labor and space required for wiring the communication line to the power camera.
- the cordless communication between the slave unit 68 of the power meter 29 and the sub slave unit 70 of the power conditioner 50 via the dedicated communication line 69 is illustrated.
- the present invention is not limited to this, and communication between the slave unit of the power meter and the sub slave unit of the power conditioner may be wireless communication as the second communication means. That is, for example, as shown in FIG. 10 (b), by providing a wireless device capable of mutual communication between the slave unit 68 of the power meter 29 and the sub slave unit 70 of the power conditioner 50, The power meter 29 and the power conditioner 50 can communicate with each other. As a result, no wiring is required for communication between the power meter 29 and the power conditioner 50, and the introduction of such a power management system is facilitated.
- the cordless communication between the slave unit 68 of the power meter 29 and the sub slave unit 70 of the power conditioner 50 via the dedicated communication line 69 is illustrated.
- the communication between the power meter slave unit and the power conditioner sub-slave unit is not limited to this, and the second power communication medium is a power line that carries power between the power meter and the power conditioner.
- Power line carrier communication may be used as the communication means. That is, for example, as shown in FIG. 11, by providing a power line carrier communication device capable of mutual communication between the slave unit 68 of the power meter 29 and the sub slave unit 70 of the power conditioner 50, the power line
- the power meter 29 and the power conditioner 50 can communicate with each other by carrier communication (PLC). This eliminates the need for communication wiring in communication between the power meter and the power conditioner, and enables stable information transmission by wire.
- the power meter 29 of each of the above embodiments supplies its driving power from the power system of the commercial power supply.
- power for driving the power meter should be supplied from the storage battery via the power conditioner. It may be.
- the switching determination unit 7 4 of the power meter 29 detects a power failure
- the battery 1 is stored in the power conditioner 5 0 through communication between the slave unit 6 8 and the sub slave unit 70. Requires power supply from 6.
- the switch 7 4 A between the power meter 29 and the lead-in power line 2 A is opened and the power conditioner 72 is connected to the power conditioner 72.
- the power output from the power supply 50 is supplied to the memory 73 and the like from the power supply unit 72.
- the switching judgment unit 7 4 of the electric camera 29 detects power recovery, it requests the power conditioner 50 to stop the power supply from the storage battery 16 and stops the power supply from the storage battery 16.
- the switch 7 4 A is closed in synchronization with and the connection between the power meter 29 and the power line 2 A is restored. This reduces the possibility that information stored in the power meter 29 will be lost due to a power failure, and ensures communication with the power conditioner 50 even during a power failure. The convenience of operation of a simple power management system is improved.
- the position of the power meter 29 is specified by the address registered with the power company 60
- the present invention is not limited to this, and the position of the power meter may be specified by data acquired by a position measuring device such as GPS (Global Positioning System) provided in the electric camera, or equipped with a GPS.
- the installation contractor may set the power meter, power conditioner, power company, etc. using a setter (not shown).
- the power meter 29 is provided with a GPS 75, and the position information obtained by the GPS 75 is transmitted from the power meter 29 to the grid connection server 61 by communication.
- the position of the power meter 29 can be specified by the grid connection server 61. This eliminates the need for setting the position when installing the power meter 29, and eliminates the possibility of making a mistake in the setting, so that the position of the power meter 29 can be specified reliably and easily.
- the voltage measured by the power meter 29, current, power information such as the amount of power 29 J is transmitted to the meter reading center of the power company 60 and the power conditioner 50 Illustrated.
- the present invention is not limited to this, and power information such as voltage, current, and electric energy measured by a power meter may be easily referred to.
- a web server 76 is provided in the electric camera 29, and the browser of the computer 78 connected to the electric power meter 29 through the home server 31 and the power conditioner 50.
- the power information 29 J information such as voltage, current, and power measured by the power meter 29 may be returned in response to a request from This facilitates access to the power meter 29 and improves its maintainability.
- This allows the power meter to be For example, information such as the amount of power input from the power supply system of the commercial power supply and the amount of power output to the power supply system can be easily confirmed.
- the grid link information is generated by the grid link server based on the information fetched from the power conditioner of each power supply system via the power meter, and this is used as the power conditioner of each power supply system. It illustrated about the case where it transmits to.
- the present invention is not limited to this, and the power conditioner of each power supply system generates grid link information and receives the grid link information from the power conditioners of other power supply systems via the power meter. May be.
- the power conditioner of the power supply system 1 A A can receive information from the power conditioner of the other power supply system 1 A D via the master unit 6 6 A and the communication line 64.
- the electric power meter 29 of each of the above embodiments is usually attached to the outside of a house, for example, the outer wall of a house. Therefore, a security camera that can shoot around the power meter may be provided in the power meter.
- the measurement unit 8 is located below the measurement unit 8 3 of the power meter 2 9 which is attached to the outer wall via the base 80 and connected to the power lines 8 1 and 8 2.
- outdoor power meter 29 can be used for crime prevention, etc. by being able to monitor outdoors, and power supply from power meter 29 and communication of power meter 29 can be used. This eliminates the need for wiring for the camera 86.
- the present invention is not limited to this, and the inverter may communicate with other inverters via the master unit.
- the master unit is provided for each step-down transformer or for several transformers.
- the master unit may be relayed so that it can communicate with other power conditioners connected to the corresponding step-down transformer.
- This enables intercommunication limited to the neighborhood, such as exchanging information about power interchange between neighboring power conditioners, and a circulation board that is not directly related to power but limited to the region. It can also be used to communicate such information.
- Information such as circulation boards limited to the region can be confirmed by images and sounds through the operation panel 40, door phone slave unit, TV, and other devices that have a user interface connected to the inverter 50. It can also be made possible.
- the solar cell 3 is a power generation device.
- the present invention is not limited to this, and the power generation device only needs to have a function of generating power, and may be a storage battery, a fuel cell, a wind power generation device, or the like.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Control Of Electrical Variables (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/498,755 US9088182B2 (en) | 2009-09-29 | 2010-09-14 | Electric power management system |
CN201080043434XA CN102668300A (zh) | 2009-09-29 | 2010-09-14 | 电力管理系统 |
EP10819967.0A EP2485361A4 (en) | 2009-09-29 | 2010-09-14 | POWER MANAGEMENT SYSTEM |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009225067A JP2011078168A (ja) | 2009-09-29 | 2009-09-29 | 電力管理システム |
JP2009-225067 | 2009-09-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011039586A1 true WO2011039586A1 (ja) | 2011-04-07 |
Family
ID=43825614
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2010/002285 WO2011039586A1 (ja) | 2009-09-29 | 2010-09-14 | 電力管理システム |
Country Status (5)
Country | Link |
---|---|
US (1) | US9088182B2 (ja) |
EP (1) | EP2485361A4 (ja) |
JP (1) | JP2011078168A (ja) |
CN (1) | CN102668300A (ja) |
WO (1) | WO2011039586A1 (ja) |
Cited By (1)
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Also Published As
Publication number | Publication date |
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CN102668300A (zh) | 2012-09-12 |
JP2011078168A (ja) | 2011-04-14 |
EP2485361A4 (en) | 2014-06-11 |
US20120181974A1 (en) | 2012-07-19 |
EP2485361A1 (en) | 2012-08-08 |
US9088182B2 (en) | 2015-07-21 |
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