JP2013219908A - In-district power supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an in-district power supply system in which electric power stored in a secondary battery within a district is flexibly used for each building.SOLUTION: In an in-district power supply system, HEMSs 30 in buildings 10A-10C store power storage amounts stored from the buildings 10A-10C into secondary batteries 92A-92C, respectively, and a control center 82 obtains via a network 72 the power storage amounts from the buildings 10A-10C to the secondary batteries 92A-92C stored in the HEMSs 30, and the control center 82 aggregates the power storage amounts obtained from the HEMSs 30 of the buildings 10A-10C in association with buildings 10A-10C from which it has acquired the power storage amounts, respectively, and allows the HEMSs 30 of the buildings 10A-10C to display the aggregated result via the network 72.

Description

  The present invention relates to an in-region power supply system that interchanges electric power in a region among a plurality of buildings in an area composed of a plurality of buildings.

  A system or method for storing surplus power of a building in a storage battery and using the power stored in the storage battery as necessary has been proposed.

  For example, in the technology described in Patent Document 1, the storage battery power of the power supply system that can grasp how much power is stored in the storage battery from any one of the supply sources such as the system power and the solar power generation device. A source monitoring device has been proposed.

JP 2011-83058 A

  However, the technique described in Patent Document 1 is based on the premise that the storage battery is charged with surplus power in one house and the use of the charged power, and the storage battery is used in an area where a plurality of buildings exist. There was a problem that the stored power was not taken into account in each building.

  The present invention has been made in consideration of the above-described facts, and an object thereof is to provide an in-region power supply system that accommodates power stored in a storage battery in an area where a plurality of buildings exist.

  In order to achieve the above object, the invention according to claim 1 is a power storage means for storing a plurality of buildings to which power is supplied from system power or another power source, and a surplus portion of the power supplied from the plurality of buildings. And a control terminal that is provided in each of the plurality of buildings and has storage means for storing the amount of electricity stored in the electricity storage means from the building in which the device is provided, and display means for displaying various information. A communication network that enables communication with each control terminal of the building in an area to which the plurality of buildings belong; and communication with each control terminal of the building via the communication network; The amount of electricity stored in the storage means of each control terminal of the building is acquired via, and the acquired amount of electricity stored is associated with each building related to the amount of electricity stored and the result of the aggregation Via the communication network It is characterized by and a control means for displaying on the display unit of the control terminal of the building.

  According to the invention described in claim 1, the plurality of buildings are a house, a business establishment, a school, or the like that exists in a predetermined area. Including.

  The power storage means can be charged with grid power, solar power, or power supplied from a co-generator such as a fuel cell or a gas engine, and can supply stored power to buildings in the area as needed. Next battery.

  The control terminal is a HEMS (Home Energy Management System), and can store an amount of electricity stored as electric power stored in a storage battery.

  The communication network is a so-called LAN (Local Area Network), and terminals or devices connected to the communication network can communicate with each other.

  The control means is a facility or apparatus that centrally controls the power that can be used in the area, acquires the amount of power stored in the storage means of the control terminal of each building via the communication network, and acquires the acquired amount Each power storage amount can be totaled in association with each building related to the power storage amount, and the totaled result can be displayed on the display means of the building control terminal via the communication network.

  As a result, the user of each building recognizes the power of the power storage means that can be used in the region and how much each building contributes to charging from the result of the accumulation of the power storage means displayed on the control terminal. can do.

  As in the invention described in claim 2, the building control terminal can select either the grid power or the power storage means when power can be supplied from the grid power or the power storage means. You may make it.

  According to the second aspect of the present invention, the user can select whether to use the grid power or the power of the power storage means via the control terminal of each building.

  Further, as in the invention described in claim 3, when the supply of power from the system power is insufficient, the control means stores the power stored in the power storage means in order from the building with the largest amount of power stored in the power storage means. May be preferentially supplied.

  According to the third aspect of the present invention, it is possible to preferentially supply power from the power storage means to a building that has contributed to charging the power storage means.

  According to a fourth aspect of the present invention, when the power supply from the system power and the power storage means is insufficient, the control means supplies the display means of the control terminal of the building from the other power source. It may be displayed that the power to be used is used.

  According to the invention described in claim 4, when the supply of electric power is tight, the control terminal of each building is used so as to use the electric power supplied from solar power generation or a co-generator such as a fuel cell or a gas engine. Can be displayed.

  According to a fifth aspect of the present invention, the other power source includes the vehicle power storage means, the solar power generation means, the fuel cell, and the gas engine of the vehicle that travels with the power stored in the vehicle power storage means. It may be at least one of the co-generators.

  According to invention of Claim 5, various power supplies other than system electric power and an electrical storage means can be used.

  According to a sixth aspect of the present invention, the control means detects whether a vehicle having power generation capability is connected to each of the buildings via the control terminal of the building and the communication line. When the power supply from the grid power and the power storage means is insufficient, the power generated by the vehicle is supplied into the area to the display means of the control terminal of the building to which the vehicle having the power generation capability is connected. A message requesting this may be displayed.

  According to the invention of claim 6, when the supply of electric power in the area is tight, the vehicle is connected to the control terminal of the building to which a vehicle such as HV (Hybrid Vehicle) or PHV (Plug-in Hybrid Vehicle) is connected. The engine can be started to cause the vehicle to generate power, and the generated power can be requested to be supplied to the area.

  Further, as in the invention described in claim 7, a plurality of the power storage means may be provided in the area. Thereby, even if the power storage means is made redundant and one power storage means becomes unusable, another power storage means can be used.

  Further, as in the invention described in claim 8, the power storage means may be provided in each building in the area. As a result, the power storage means can be made redundant, and the power stored in the power storage means included in each building can be easily used preferentially by the building including the power storage means.

  Further, as in the invention described in claim 9, each of the buildings may have means for selecting either the grid power or the power stored in the power storage means. As a result, the power supply source can be switched from the system power to the power storage means.

  As described above, according to the invention described in claim 1, the power of the power storage means that can be used in the area can be displayed on the control terminal of each building in the area. There is an effect that a power feeding system can be provided.

  According to the second aspect of the present invention, the user can select whether to use the grid power or whether to use the power of the power storage means.

  According to the third aspect of the present invention, it is possible to provide a fair in-region power supply system that preferentially accommodates power to a building in which a large amount of power is charged in the power storage means.

  According to invention of Claim 4, when supply of system power and the electric power from an electrical storage means is tight, it uses that the electric power from other electric power sources, such as solar power generation, uses the control terminal of each building By displaying on the screen, there is an effect that the tight power supply and demand in the region can be eased.

  According to the fifth aspect of the present invention, the power supply source can be made redundant by using various power sources other than the system power or the power storage means.

  According to the sixth aspect of the present invention, there is an effect that electric power from a vehicle having power generation capability can be supplied in the area even when supply of power from the grid power and the power storage means is insufficient.

  According to the invention described in claim 7 and the invention described in claim 8, by having a plurality of power storage means in the area, an increase in power storage capacity and an improvement in system reliability due to redundancy of the power storage means can be expected. There is an effect.

  According to invention of Claim 9, there exists an effect that an appropriate electric power supply source can be selected according to a condition.

It is the schematic which shows an example of the electric power feeding system in a region which concerns on the 1st Embodiment of this invention. It is a block diagram which shows schematic structure of HEMS contained in the in-region electric power feeding system which concerns on the 1st Embodiment of this invention. It is a figure which shows an example of the total result of the electrical storage amount of each storage battery displayed on the display part of HEMS. It is a figure which shows an example of the screen which selects the electric power used displayed on the display part of HEMS. It is a figure which shows an example of the screen which selects the electric power used displayed on the display part of HEMS. It is a figure which shows an example of the screen which requests | requires starting of the engine of the vehicle displayed on the display part of HEMS. It is the schematic which shows an example of the local electric power feeding system which concerns on the 2nd Embodiment of this invention.

[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of an in-region power supply system 100 according to the present embodiment.

  The regional power supply system 100 according to the present embodiment receives the power supplied from the grid power 12 by the regional transformer 62, and the regional transformer 62 receives the power supplied from the grid power 12 through the local power line 64. Convert to voltage and current suitable for power transmission.

  As the voltage and current in the local power line 64, a three-phase three-wire system 200V, a single-phase two-wire system 200V, a single-phase two-wire system 100V, or the like can be considered.

  In FIG. 1, the regional power line 64 is an annular system having a section switch 66, but may be a dendritic system, a low-voltage banking system, or a regular network system.

  In the buildings 10A, 10B, and 10C in the area, the distribution board 14 is connected to the in-area power line 64, respectively.

  In addition, the regional power supply system 100 according to the present embodiment has a network 72 that connects the buildings 10A, 10B, and 10C in the region, and the network 72 and the regional power line 64 include the network 72 according to the present embodiment. A control center 82 that controls the power supply system 100 is connected.

  The buildings 10A, 10B, and 10C in the region are configured to be connectable to vehicles 18A, 18B, and 18C such as EV (Electric Vehicle), HV, and PHV, respectively. Hereinafter, the configurations of the buildings 10A, 10B, and 10C and the vehicles 18A, 18B, and 18C will be described. However, the configurations of the buildings 10A, 10B, and 10C and the configurations of the vehicles 18A, 18B, and 18C are all the same. Therefore, the same reference numerals are used for explanation.

  First, as described above, the buildings 10A, 10B, and 10C are provided with the distribution boards 14 to which the grid power 12 supplied from the power company is connected via the regional transformer 62 and the regional power line 64. The power from the grid power 12 is supplied into the buildings 10A, 10B, and 10C via the distribution board 14.

  The distribution board 14 is connected to home appliances 20 and housing equipment 22 provided in the buildings 10A, 10B, and 10C as a plurality of power supply destinations, and is supplied with power from the system power 12.

  Furthermore, the buildings 10 </ b> A, 10 </ b> B, and 10 </ b> C may include the solar power generation device 16.

  Further, it is possible to charge the vehicle storage battery 28 of the vehicles 18A, 18B, and 18C connected to the distribution board 14 via the vehicle connecting portion 26, and conversely, from the vehicle storage battery 28 to the distribution board 14. It is also possible to supply power to.

  Although the electric power taken out from the vehicle storage battery 28 is a direct current, it is converted into an alternating current of 50 Hz or 60 Hz by a single-phase two-wire system 100V by an inverter (not shown) provided in each vehicle, and a vehicle connecting portion 26 described later is provided. To the distribution board 14.

  The vehicle connecting portion 26 is a connector that electrically connects the distribution board 14 and the vehicle by being connected to the vehicle by a cable. The connector includes a terminal of a power line for supplying electric power from the distribution board 14 to the vehicle or supplying electric power of the vehicle to the distribution board 14, a HEMS 30 for managing and controlling energy in the building, and the vehicle. You may have the terminal of the information line which concerns on communication.

  The vehicle connecting portion 26 supplies power to the vehicle under the control of the HEMS 30 and charges the vehicle storage battery 28. Moreover, the vehicle connection part 26 supplies the electric power by the discharge | release of the storage battery 28 for vehicles to the distribution board 14 according to control of HEMS30.

  Further, the HEMS 30 monitors the current between the vehicle connecting portion 26 and the vehicle connected to the vehicle connecting portion 26, and the vehicle storage battery 28 is charged via the vehicle connecting portion 26, or for the vehicle. It is grasped whether the electric power of the vehicle is supplied to the distribution board 14 by the discharge of the storage battery 28.

  The communication between the HEMS 30 and the vehicle may be so-called power line carrier communication using a power line instead of an information line.

  The buildings 10A, 10B, and 10C are provided with fuel cells 90A, 90B, and 90C, respectively, and the generated power can be supplied to the distribution board 14 of each connected building.

  In the present embodiment, each building may include a co-generator using a gas engine in addition to the fuel cell.

  In the present embodiment, the photovoltaic generator 16, fuel cells 90A, 90B and 90C, and the co-generator using the gas engine generate the generated direct current from the distribution board 14 to the home appliance 20 and the residential equipment 22. (For example, it is provided with conversion means (not shown) such as an inverter capable of conversion to a single-phase two-wire system of 100 V and 50 Hz or 60 Hz).

  Further, the buildings 10A, 10B, and 10C are provided with storage batteries 92A, 92B, and 92C, respectively, and can store surplus power generated in each building.

  As the storage batteries 92A, 92B and 92C, rechargeable secondary batteries such as lead storage batteries, nickel metal hydride batteries, or lithium ion batteries are used. Since one cell of these secondary batteries has an electromotive force of about 1 to 2 V, in this embodiment, a plurality of cells are connected in series so that a desired voltage can be obtained and a desired voltage can be obtained. A desired current can be obtained by bundling a plurality of aggregates composed of a plurality of cells connected in series to each other and packaging them.

  The packaged storage batteries 92A to 92C convert alternating current (for example, 100 V, 50 Hz) supplied via the distribution board 14 into direct current having a voltage suitable for charging the storage battery, and the storage battery is discharged. Conversion means (not shown) such as a bidirectional inverter capable of converting the direct current into alternating current supplied from the distribution board 14 to the home appliance 20 and the housing equipment 22 is provided.

  Furthermore, the storage batteries 92A to 92C include a charge / discharge control circuit (not shown) that controls charging / discharging of the storage batteries 92A to 92C, and are controlled by the HEMS 30 together with the above-described inverter.

  A HEMS 30 is connected to the distribution board 14. The HEMS 30 controls the distribution board 14 so that the power of the grid power 12, the solar power generation device 16, the fuel cell 90A (or 90B or 90C), the co-generator by the gas engine and the vehicle storage battery 28 is supplied to the building 10A (or 10B). Alternatively, control for supplying to 10C) or control of electric power for charging the vehicle storage battery 28 and the storage battery 92A (or 92B or 92C) is performed.

  The HEMS 30 supplies the electric power stored in the vehicle storage battery 28 of each vehicle and the electric power generated by each vehicle starting the engine to the local power line 64 via the vehicle connecting portion 26 and the distribution board 14. Can do.

  Further, the HEMS 30 provided in each of the buildings 10A, 10B, and 10C is configured such that the electric power stored in the storage battery 92A in the building 10A, the storage battery 92B in the building 10B, and the storage battery 92C in the building 10C is supplied via the distribution board 14. It is possible to supply the power line 64 within the area.

  The distribution board 14 may have a function of converting the power supplied from each vehicle and the storage battery into a voltage and a current transmitted through the regional power line 64 such as the above-described three-phase three-wire system 200V. .

  In the present embodiment, the HEMS 30 provided in each of the buildings 10A, 10B, and 10C includes a solar power generation device 16, a fuel cell 90A (a fuel cell 90B in the building 10B, a fuel cell 90C in the building 10C), and a gas engine. The power sources other than the system power such as the co-generator are controlled, and the amount of power generated by these power sources is stored.

  Further, the HEMS 30 provided in each of the buildings 10A, 10B, and 10C in the present embodiment controls the storage battery 92A in the building 10A, the storage battery 92B in the building 10B, and the storage battery 92C in the building 10C, and the buildings 10A to 10C. The generated surplus power is stored in each of the storage batteries 92A to 92C.

  In that case, HEMS30 memorize | stores the electrical storage amount which is the electric power by which surplus electric power produced in the building 10A was charged by the storage battery 92A (the storage battery 92B in the building 10B, and the storage battery 92C in the building 10C). The amount of power stored in the storage battery is generally calculated based on the voltage of the storage battery before charging and the voltage of the storage battery after charging, but more simply, the power supplied to the storage battery is determined according to the charging efficiency. The electric power obtained by multiplying the coefficient (<1) may be used as the amount of electricity stored in the battery.

  FIG. 2 is a block diagram showing a schematic configuration of the HEMS 30 included in the regional power supply system 100 according to the embodiment of the present invention.

  As shown in FIG. 2, the HEMS 30 includes a CPU 36, a ROM 38, a RAM 40, and an input / output port 42. These include a bus 44 such as an address bus, a data bus, and a control bus. Are connected to each other.

  A display unit 46, an operation unit 48, and a memory 50 are connected to the input / output port 42 as various input / output devices. The display unit 46 and the operation unit 48 are integrally configured, and a touch panel provided on the display unit 46 can be applied to the operation unit 48.

  In the memory 50, a program for controlling the power supplied to the buildings 10A, 10B, and 10C, a program for controlling the home appliance 20, the housing equipment 22, and the like, and charging / discharging of the vehicle storage battery 28 are performed. Program, a program for controlling the solar power generation device 16, a program for controlling the fuel cells 90A to 90C, a program for controlling charging / discharging of the storage batteries 92A to 92C, various information for executing these programs, etc. Is remembered.

  Further, the memory 50 can store the amount of power stored in the storage battery.

  The HEMS 30 performs various types of control such as control of power supplied to the buildings 10A, 10B, and 10C by developing a program stored in the memory 50 on the RAM 40 and the like and executing it by the CPU 36.

  Further, the input / output port 42 includes a distribution board 14, a solar power generation device 16, a fuel cell 90A (90B, 90C), a storage battery 92A (92B, 92C), a vehicle connection unit 26, and a network interface 52 connected to the network. Etc. are connected.

  The control center 82 acquires information on the storage amount of the storage batteries 92 </ b> A to 92 </ b> C stored in the HEMS 30 of each building via the network 72.

  The control center 82 totals the acquired storage amounts of the storage batteries 92A, 92B, and 92C in association with the buildings 10A, 10B, and 10C, and transmits the totaled results to the buildings 10A, 10B, and 10C via the network 72.

  In the buildings 10 </ b> A, 10 </ b> B, and 10 </ b> C, the total result of the storage amount of the storage battery existing in the area received from the control center 82 can be received by the HEMS 30 and displayed.

  FIG. 3 is a diagram illustrating an example of a total result of the storage amount of each storage battery displayed on the display unit 46 of the HEMS 30. In FIG. 3, the power storage amount with respect to the capacity that can be stored in the storage batteries 92 </ b> A to 92 </ b> C in the area is shown on the left side for each building that supplies power related to charging.

  “%” On the left side of FIG. 3 means the contribution rate of each building in charging the storage battery. For example, the building 10A (“Building A” in FIG. 3) has a contribution rate of 40%, which corresponds to the contribution rate. Power can be preferentially supplied.

  There are various methods for preferentially supplying power corresponding to the contribution rate of storage battery charging to each building. As an example, first, the control center 82 transmits a command for limiting the power supplied via the regional power line 64 to the HEMS 30 of each building via the network 72. It is conceivable that the HEMS 30 of each building controls the distribution board 14 based on the received command to limit the power supplied from the in-region power line 64 to a level commensurate with the contribution rate of charging the storage battery.

  In this way, by distributing the power supplied from the storage batteries 92A to 92C to each building in consideration of the contribution rate of charging to the storage batteries in each building, it is possible to interchange power within the fair area. Become.

  In the present embodiment, when the supply of power from the grid power 12 is smooth and the storage amount of the storage batteries 92A to 92C is sufficient, as shown in FIG. Or you may display the screen selected from the electric power stored in the storage battery on the display part 46 of HEMS30. In this case, as shown in FIG. 4, means capable of selecting either the grid power or the power stored in the storage battery may be displayed together.

  Various conditions for switching from system power to power stored in the storage battery are conceivable. As an example, when the electricity charge of the system power is a predetermined level, for example, 50 yen / kWh or more, a means for switching from the system power to use the power stored in the storage battery may be displayed on the display unit 46.

  In addition, when the amount of system power used exceeds a basic capacity, for example, 40 kWh, it is conceivable to display a means for switching to use the power stored in the storage battery on the display unit 46.

  Furthermore, when the electricity charge for the grid power is above a predetermined level, or when the grid power usage exceeds the basic capacity, the power supply source is automatically set to use the power stored in the storage battery from the grid power. You may make it switch to.

  Further, in the present embodiment, as shown in FIG. 5, the building is provided with a power source other than the system power such as the solar power generation device 16 and the fuel cell 90A (or 90B or 90C), When power from these power sources can be used, a screen for selecting power used in the building from power from other power sources may be displayed on the display unit 46 of the HEMS 30. In this case, as shown in FIG. 5, means capable of selecting either the fuel cell or the electric power stored in the storage battery may be displayed together.

  Further, in the present embodiment, the control center 82 determines that the power supplied from other power sources such as the grid power 12, the storage batteries 92A to 92C, and the fuel cells 90A to 90C cannot meet the demand for power in the area. In such a case, a message as shown in FIG. 6 may be displayed on the display unit 46 of the HEMS 30.

  In FIG. 6, the control center 82 generates power by starting the connected HV or PHV engine for the building where the HV or PHV is connected to the vehicle connecting portion 26, and uses the electric power obtained by the power generation. Display a message recommending that you do.

  In addition, in FIG. 6, you may make it display the message which recommends using the electric power stored in the storage battery 28 for vehicles, before starting the engine of HV or PHV.

  With such a message, it is possible to cope with the case where the vehicle connected to the building is EV, and after using the power of the vehicle storage battery 28, the vehicle is started by starting the HV or PHV engine. The fuel can be saved and the exhaust gas can be suppressed.

  In addition, the control center 82 may display a message requesting that the power generated by the HV or PHV be supplied to the area through the local power line 64.

  In this way, a user of a building connected to a vehicle having a power generation capability starts the engine of the vehicle to generate power, and supplies the power obtained by power generation in the region, thereby reducing the power in the tight region Supply and demand can be eased.

  Note that the message shown in FIG. 6 may be transmitted only to a building to which a vehicle having power generation capability is connected.

  In the present embodiment, the HEMS 30 of each building can detect whether or not a vehicle is connected to the vehicle connecting portion 26, and is not shown in FIG. 1, but between the HEMS 30 and the vehicle. A means for enabling the wireless communication may be provided separately, and the presence or absence of a vehicle in each building may be detected by the wireless communication.

  The control center 82 obtains the detection result of the presence or absence of the vehicle by the HEMS 30 of each building via the network 72, so that only the building to which a vehicle capable of generating power such as HV or PHV is connected is shown in FIG. You can send a message like

  As described above, according to the present embodiment, the power of the storage battery that can be used in the area can be displayed on the control terminal of each building in the area according to the contribution rate of the charging of each building. Can be accommodated.

  In the present embodiment, each building is provided with a storage battery. However, all buildings in the area may not have a storage battery.

  In the present embodiment, each storage battery is connected to each building, but a plurality of storage batteries are connected to the local power line 64 or the control center 82 instead of the building, and the surplus power of each building is A plurality of storage batteries may be charged through the internal power line 64.

  Whether each building has its own storage battery or connected to any of the buildings, a plurality of storage batteries are connected to the local power line 64 or the control center 82. In the embodiment, it is only necessary that a plurality of storage batteries exist in the area.

  By providing a plurality of storage batteries in the area, it is possible to increase the storage capacity and improve the reliability of the system by making the storage batteries redundant.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. FIG. 7 is a schematic diagram showing an example of the in-area power supply system 102 according to the second embodiment of the present invention.

  As shown in FIG. 7, the present embodiment is the same as the first embodiment except that the storage battery 92E is provided and the storage batteries 92A to 92C are not provided in the buildings 10A to 10C. About the same structure as 1 embodiment, the same code | symbol is used and description is abbreviate | omitted.

  The regional storage battery 92E is a secondary battery capable of storing the power supplied from the power source including the grid power 12 and the photovoltaic power generation and the fuel cell, and supplying the stored power to the buildings 10A to 10C in the region. As a kind of the secondary battery, a lead storage battery, a nickel metal hydride battery, a lithium ion battery, or the like can be considered, but other than these, a secondary battery capable of charging and discharging can be used.

  The regional storage battery 92E is an assembly of storage battery modules in which storage battery modules having an electromotive force of, for example, about 12V, which are formed by combining a plurality of cells having an electromotive force of approximately 1 to 2V in series, are further combined in series and in parallel. However, it is configured to generate a voltage and current comparable to the system power 12.

  The voltage of the local storage battery 92E is, for example, about 140 to 150 V, and the current can take various values depending on the scale of the area where it is installed.

  The regional storage battery 92E can convert the alternating current from the grid power 12 into a direct current of a voltage suitable for charging the storage battery module assembly, and the direct current discharged from the storage battery module assembly can be converted into a local power line. For example, an inverter (not shown) suitable for power transmission at 64 can be converted into a three-phase three-wire system 200V, a single-phase two-wire system 200V, a single-phase two-wire system 100V, or the like.

  Further, the regional storage battery 92E includes a charge / discharge control circuit (not shown) that controls charging / discharging of the assembly of storage battery modules, and is controlled by the control center 82 together with the above-described inverter.

  The control center 82 monitors the voltage of the regional storage battery 92E to grasp the amount of power stored in the regional storage battery 92E. Moreover, when there is a margin in the power in the area, control is performed so that the local storage battery 92E is charged, and if the power consumption of the buildings 10A to 10C exceeds the target power consumption, the power is stored in the local storage battery 92E. Supply the generated power to the region.

  In the present embodiment, the electric power used for charging the regional storage battery 92E is surplus power in the area, but the surplus power generated in the buildings 10A to 10C is the same as in the first embodiment. Power can be included.

  In the present embodiment, when surplus power is generated in the buildings 10A to 10C, the HEMS 30 of the buildings 10A to 10C supplies the surplus power to the in-region power line 64.

  The control center 82 controls the regional storage battery 92E so as to charge the regional storage battery 92E with surplus power in the region including the power supplied from the buildings 10A to 10C.

  The HEMS 30 of the buildings 10 </ b> A to 10 </ b> C stores the power supplied to the regional power line 64 in the memory 50.

  The control center 82 acquires information on the power supplied to the regional power line 64 stored in the HEMS 30 of the buildings 10 </ b> A to 10 </ b> C via the network 72 via the network 72.

  The control center 82 calculates the amount of electricity stored in the regional storage battery 92E from the buildings 10A to 10C from the information on the power supplied by the buildings 10A to 10C to the in-region power line 64.

  The amount of power stored in the storage battery is generally calculated based on the voltage of the storage battery before charging and the voltage of the storage battery after charging. However, in this embodiment, since the power supplied from a plurality of buildings is concentrated on one regional storage battery, the storage amount of the regional storage battery 92E of the buildings 10A to 10C is grasped from the voltage before charging and the voltage after charging. It is difficult to do.

  In the present embodiment, the power obtained by multiplying the power supplied from the buildings 10A to 10C to the local power line 64 by a predetermined coefficient (<1) related to the charging efficiency of the regional storage battery 92E is used as the storage amount of the battery. .

  In the present embodiment, the HEMS 30 of the buildings 10A to 10C stores a value obtained by multiplying the power supplied to the regional power line 64 by a predetermined coefficient (<1) in the memory 50 as a storage amount, and the control center 82 The amount of power stored in the HEMS 30 of the buildings 10A to 10C may be acquired.

  The control center 82 totals the amount of power stored in the regional storage batteries 92E of the buildings 10A to 10C in association with the buildings 10A, 10B, and 10C.

  The control center 82 displays the messages as shown in FIGS. 3 to 6 in the first embodiment on the HEMS 30 of the buildings 10A to 10C based on the aggregated regional storage battery 92E and the power supply status of the system power 12. can do.

  It should be noted that the storage power of the regional storage battery 92E calculated by the control center 82 based on the voltage of the regional storage battery 92E and the result obtained by summing the power supplied from the buildings 10A to 10C to the regional power line 64 by a predetermined coefficient as the storage amount. May cause wrinkles in quantity.

  In such a case, the storage amount obtained by multiplying the power supplied from the buildings 10A to 10C to the regional power line 64 by a predetermined coefficient is corrected based on the storage amount of the regional storage battery 92E calculated based on the voltage of the regional storage battery 92E. May be.

  Specifically, first, the storage amount of the regional storage battery 92E calculated based on the voltage of the regional storage battery 92E and the total value of the storage amount calculated based on the power supplied to the local power line 64 from the buildings 10A to 10C. Calculate the quotient.

  Next, using the quotient as a correction coefficient, the correction coefficient is used for the amount of electricity stored in each of the buildings 10A to 10C in the regional storage battery 92E calculated based on the power supplied to the local power line 64 by each of the buildings 10A to 10C. Multiply.

  As described above, according to the present embodiment, charge / discharge management of a storage battery is facilitated by centrally managing one regional storage battery 92E within the area.

  Moreover, by providing the regional storage battery 92E capable of centralized management, it is easy to prevent system troubles in advance, and even if a problem occurs in the regional storage battery 92E, it is possible to respond quickly. is there.

  In the first and second embodiments described above, the case of three buildings and three vehicles has been described. However, the present application is not limited to these, and the number of buildings and the number of vehicles The number of units varies depending on the scale of the region to which the present invention is applied.

10A, 10B, 10C Building 12 System power 14 Distribution board 16 Solar power generation device 18A, 18B, 18C Vehicle 26 Vehicle connection 28 Vehicle storage battery 30 HEMS
46 Display unit 50 Memory 52 Network interface 64 Intraregional power line 72 Network 82 Control center 90A, 90B, 90C Fuel cell 92A, 92B, 92C Storage battery 92E Regional storage battery 100 Intraregional power supply system 102 Intraregional power supply system

Claims (9)

A plurality of buildings powered by grid power or other power sources;
Power storage means for storing surplus power supplied from the plurality of buildings;
A control terminal that is provided in each of the plurality of buildings and has storage means for storing the amount of electricity stored in the electricity storage means from the building where the self-machine is provided, and display means for displaying various information;
A communication network that enables communication with each control terminal of the building in an area to which the plurality of buildings belong;
It is communicable with each control terminal of the building via the communication network, acquires the amount of electricity stored in the storage means of each control terminal of the building via the communication network, and each of the acquired A control unit that aggregates the amount of stored electricity in association with each building related to the amount of stored electricity, and causes the display unit of the control terminal of the building to display the aggregated result via the communication network;
Regional power supply system with   3. The regional power supply according to claim 1, wherein the building control terminal enables selection of either the grid power or the power storage means when power can be supplied from the grid power or the power storage means. 4. system.   The control means is configured to preferentially supply the power stored in the power storage means in order from a building with a large amount of power stored in the power storage means when power supply from the grid power is insufficient. 2. The regional power supply system described in 2.   The said control means makes it display that it uses the electric power supplied from said another electric power source on the display means of the control terminal of the said building, when the power supply from the said system power and the said electrical storage means is insufficient. The in-region electric power feeding system of any one of -3.   The other power source is at least one of a vehicular power storage unit, a solar power generation unit, a fuel cell, and a co-generator of a gas engine of a vehicle that travels with power stored in the vehicle power storage unit. The in-region electric power feeding system of any one of 1-4.   The control means detects whether a vehicle having power generation capability is connected to each of the buildings via the control terminal of the building and the communication line, and supplies power from the grid power and the power storage means. 6. When there is a shortage of power, a message requesting that the power generated by the vehicle be supplied to the area is displayed on the display means of the control terminal of the building to which the vehicle having the power generation capability is connected. The in-region power supply system according to any one of the above.   The in-region power supply system according to claim 1, wherein a plurality of the power storage units are provided in the region.   The in-region power supply system according to claim 1, wherein the power storage unit is provided in each of the buildings in the region.   The in-region power supply system according to any one of claims 1 to 7, wherein each of the buildings has means capable of selecting either the grid power or the power stored in the power storage means.

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