JP5952071B2 - Residential area power management system - Google Patents

Description

  The present invention relates to a power management system for a residential area.

  In the household power supply system of Patent Document 1, a storage battery is provided, the storage battery is charged with surplus power in the midnight hours, and the power of photovoltaic power generation and the power of the storage battery are used as household power during the daytime hours when power consumption peaks. Consuming.

  Moreover, in the household power supply system of patent document 1, when the electric power of photovoltaic power generation and the electric power charged to the storage battery are insufficient with respect to power consumption, the electric power of a system power supply is supplied, the electric power of solar power generation and the electric power of a storage battery If surplus occurs, the power of the grid power supply is averaged by selling power.

JP 2002-17043 A

  However, the home power supply system of Patent Document 1 does not change the consumption of the power of the system power supply, and does not effectively use the power generated using the natural energy obtained in the living area.

  The present invention has been made in view of the above-described facts, and an object of the present invention is to provide a residential area power management system capable of effectively using power generated using natural energy obtained in a residential area.

The living area power management system according to the invention of claim 1 includes a natural energy power generation means that is provided in at least one of a plurality of buildings in a predetermined living area and generates power using natural energy, and a system power supply. A plurality of power sources for supplying power to the electrical equipment of the building, a display unit provided in the plurality of buildings for displaying information, and a use order of the natural energy power generation unit is higher than a use order of the system power supply Priorities are set, and based on the priorities, power is supplied from the natural energy power generation means, and control is performed to suppress the supply of power from other power sources than the natural energy power generation means. a power management unit for managing, of displaying the power source power on each of the building of the plurality of power source is consumed on the display means It possesses that a power management unit, and wherein in the residential area, power from the plurality of power sources provided on one of the building to the other of the building is can be supplied, provided on one of the building The display means is provided with a means for selecting whether or not to allow power supply to the other building, and the power management means is provided with surplus power generated by the natural energy power generation means of one building. When the requesting information for power supply to the other building is transmitted to the display means of the one building, and the permission is selected by the selecting means, the nature of the one building is A storage battery is provided for storing electric power generated by the natural energy power generation means when power is supplied from the energy power generation means to the other building, and the power generated by the natural energy power generation means becomes surplus. The building In some cases, to display the requested information of the power supply to the display means to another said building of the building with the storage battery.

In the living area power management system according to the first aspect of the present invention, a plurality of power sources including a natural energy power generation means and a system power source are provided in a plurality of buildings in a predetermined living area. Here, the power management means supplies power from the natural energy power generation means in each of the plurality of buildings, and suppresses supply of power from the other power sources more than the natural energy power generation means. Thereby, since use of a system power supply is suppressed and natural energy is fully utilized, the electric power generated using the natural energy obtained in a living area can be used effectively. In addition, the power management means displays on the display means a power source in which power is consumed in the building among the plurality of power sources. Thereby, the resident of the building can know from which power source the consumed electric power is supplied, and thus can clearly grasp that the power consumption of the system power supply is suppressed. Furthermore, when the power generated by the natural energy power generation means of one building is surplus, the power management means transmits request information for power supply to other buildings to the display means of one building. And when permission of the electric power supply to another building is selected by the selection means, an electric power management means supplies electric power from the natural energy power generation means of one building to the electric equipment of another building. Thereby, in the building where power is insufficient, it is not necessary to increase the power consumption of the charged system power supply, and thus it is possible to suppress an increase in the power charge in the living area. In addition, when there is a building that lacks power in the residential area, the power management means has priority over the building that does not have a storage battery, and other display means for the building that has the storage battery. Send request information for power supply to the building. And when a resident selects the permission of the electric power supply to another building by a selection means, an electric power management means makes electric power supply to another building from the natural energy power generation means or storage battery of one building. Thereby, since the number of power sources increases, the electric power supplied to the other building where power is insufficient can be secured.

  In a residential area power management system according to a second aspect of the invention, the power management means manages the power of all of the plurality of buildings in the residential area in one center.

  In the residential area power management system according to the second aspect of the present invention, the power management means manages the power of all of the plurality of buildings in the residential area in one center, so that the power in the residential area is efficiently managed. be able to.

According to a third aspect of the present invention, there is provided a power management system for a residential area, wherein the power management means is connected to the building where the output of the natural energy power generation means is lower than that of the other building in the residential area. Priority is given to surplus power.

In the residential area power management system according to the invention of claim 3 , when there is a building whose output of the natural energy power generation means is low, the power management means preferentially supplies surplus power of other buildings to the building. Thereby, since the use of other power sources that do not use natural energy is suppressed in the building, it is possible to suppress an increase in power charges in the entire residential area.

In the power management system for a residential area according to the invention of claim 4, the natural energy power generation means is a first power generation means for receiving sunlight to generate power, and a second power generation system using other natural energy different from sunlight. The power management means can change the priority order of use of the first power generation means and the second power generation means.

  When the natural energy power generation means is only the first power generation means (solar power generation means), the amount of power generation is reduced at night, so it may be difficult to prioritize the power supplied from the first power generation means over other power sources. There is.

Here, the residential area power management system according to the invention of claim 4 has, as the natural energy power generation means, a first power generation means using sunlight and a second power generation means using other natural energy. . The priority order of the first power generation means and the second power generation means can be changed. Thereby, for example, the first power generation means is used with priority over the second power generation means (wind power generation means as an example) during the daytime, and the second power generation means is used with priority over the first power generation means at night. Thus, since the natural energy power generation means can be operated throughout the day, the natural energy power generation means can be used preferentially over other power sources.

The power management system for a residential area according to the invention of claim 5 includes a vehicle that can be electrically connected to at least one of the buildings in the residential area, and when the vehicle has surplus power, the power management means The surplus power of the vehicle is supplied to the other buildings in the living area with priority over the system power supply.

In the residential area power management system according to the fifth aspect , when there is a vehicle with surplus power, the power management means preferentially supplies the surplus power of the vehicle to another building over the system power supply. Thereby, since use of a system | strain power supply is suppressed, the increase in the electric power charge in the whole living area can be suppressed.

  As described above, according to the power management system for a residential area according to the first aspect of the present invention, it is possible to effectively use the power generated using the natural energy obtained in the residential area. Have

  As described above, the residential area power management system according to the second aspect of the present invention has an excellent effect that the power in the residential area can be efficiently managed.

As described above, the residential area power management system according to the third aspect of the present invention has an excellent effect that an increase in the power charge in the entire residential area can be suppressed.

As described above, according to the power management system for a residential area according to the fourth aspect of the present invention, an excellent effect that the natural energy power generation means can be used preferentially over other power sources. Have

As described above, the residential area power management system according to the fifth aspect of the present invention has an excellent effect of suppressing an increase in the power charge in the entire residential area.

It is the schematic of the electric power management system of the living area which concerns on this embodiment. It is explanatory drawing which shows schematic structure of the house which concerns on this embodiment. It is a block diagram which shows the outline of the connection of the electric power supply part which concerns on this embodiment, and an electric equipment. It is a block diagram which shows the outline of the connection to the management control board which concerns on this embodiment. It is the schematic which shows an example of U / I which concerns on this embodiment. It is a block diagram which shows the outline of the center server which concerns on this embodiment. (A) It is explanatory drawing which shows the setting screen of the priority of the electric power supply part in U / I which concerns on this embodiment. (B) It is explanatory drawing which shows the use condition of the electric power supply part in U / I which concerns on this embodiment. It is a flowchart which shows a process when supplying electric power based on a priority from the electric power supply part which concerns on this embodiment. (A) It is explanatory drawing which shows the request screen of the power supply in U / I which concerns on this embodiment. (B) It is explanatory drawing which shows the solar power generation status screen of the house in the living area in U / I which concerns on this embodiment. It is a flowchart which shows the selection process of the electric power supply source and electric power supply destination in the center server which concerns on this embodiment.

  An example of a residential area power management system according to an embodiment of the present invention will be described.

  As shown in FIG. 1, the power management system 10 for a residential area includes power as an example of a plurality of power sources respectively provided in houses 11A, 11B, and 11C as examples of a plurality of buildings in a predetermined living area A. Manages the power of the supply units 20A, 20B, and 20C, U / Is (user interfaces) 50A, 50B, and 50C as examples of display means for displaying information, and the houses 11A, 11B, and 11C in the living area A And a center server 48 as an example of a power management means and a center.

  The power supply units 20A, 20B, and 20C include solar power generation devices 24A, 24B, and 24C and wind power generation devices 26A, 26B, and 26C, storage batteries 30A and 30B, and an in-vehicle battery 33 (see FIG. 2). The fuel cell 28A, 28B, 28C and the system power supply 12 are included, and it is comprised so that electric power may be supplied to each electric equipment 19A, 19B, 19C of the house 11A, 11B, 11C.

  In the residential area power management system 10, management control panels 42A, 42B, and 42C for controlling the power supply of the houses 11A, 11B, and 11C and the center server 48 are connected via the network 13 such as the Internet. Yes. In addition, the house 11A, the house 11B, and 11C have basically the same configuration except that the storage battery 30 is not installed in the house 11C. For this reason, in the following description, when it is not necessary to distinguish between the houses 11A, 11B, and 11C, the alphabetic characters A, B, and C are omitted and described as the house 11, and it is necessary to distinguish between the houses 11A, 11B, and 11C. In the case where there is a letter, explanation will be given with the letters A, B, and C added. The same applies to the configuration of each part in the house 11.

  Furthermore, the power management system 10 in the residential area is provided with a power transmission switching unit 70 in the residential area A. The power transmission switching unit 70 is connected to later-described distribution boards 14A, 14B, and 14C in the houses 11A, 11B, and 11C by power transmission lines 69A, 69B, and 69C, and the power transmission switching is performed by the center server 48 via the network 13. Is managed. Thereby, in the power management system 10 in the residential area, the power supply unit 20A of the house 11A to the houses 11B and 11C, the power supply unit 20B of the house 11B to the houses 11A and 11C, and the power supply unit 20C of the house 11C to the house 11A. , 11B can be supplied with electric power.

  Next, the configuration of the house 11 will be described.

  As shown in FIGS. 2 and 3, a distribution board 14 is installed in the house 11, and the system power supply 12 drawn into the house 11 is connected to the distribution board 14 via an unillustrated integrated watt-hour meter. It is connected. The distribution panel 14 has a main switch (main breaker) having a breaking capacity determined by the contract power or the total amount of power consumed by the electrical equipment used in the house 11, and a preset setting connected to the secondary side of the main breaker. A large number of branch switches (branch breakers) having the same capacity are provided (all are not shown).

  The house 11 is provided with various electric devices 19 including home appliances such as a lighting fixture 16, a refrigerator 18, and an air conditioner (air conditioner) 21. In the house 11, these electrical devices 19 are connected to any branch breaker in the distribution board 14 through a wiring (indoor wiring) (not shown) or an outlet connected to the indoor wiring.

  As a result, in the house 11, the power of the power source such as the system power supply 12 supplied to the distribution board 14 is sent to the electric devices 19 such as the lighting fixture 16, the refrigerator 18, and the air conditioner 21 through the main breaker and the branch breaker. Supplied and each electric device 19 is operated by the supplied electric power. Note that the electrical equipment 19 provided in the house 11 can use a power load including a known general electrical equipment that uses power. Moreover, a well-known structure can be applied to the electrical wiring used for each electrical device 19 in the house 11, and detailed description thereof is omitted here.

  Further, as described above, as an example of a natural energy power generation unit that generates power using natural energy, the house 11 generates power corresponding to the amount of received light by receiving sunlight with the solar panel 22. A solar power generation device 24 as an example of a first power generation unit and a wind power generation device 26 as an example of a second power generation unit that generates power by rotating a generator by wind power are provided. In the following description, the solar power generation device 24 and the wind power generation device 26 are described as examples of the power generation device using natural energy. However, the present invention is not limited thereto, and any power generation device (hydropower generation, etc.) that uses natural energy is used. Applicable, and the house 11 may be anything provided with at least one power generation device using natural energy.

  In addition, the house 11 is provided with a fuel cell (SOCF) 28 as non-natural energy power generation means. The non-natural energy power generation means is not limited to this, and a power generation means having an arbitrary configuration such as a power generation device having a general configuration that generates electric power by rotating a generator using an internal combustion engine that uses fuel as a drive source is applied. be able to.

  Furthermore, the storage 11 is provided with the storage battery (battery) 30 in the house 11 as an electrical storage means to store electric power. The power storage means is not limited to this, and an electric vehicle (EV) having a storage battery as an electrical energy source, a plug-in hybrid electric vehicle (PHV), or the like can be used. In the house 11, a plug-in hybrid vehicle (PHV, hereinafter referred to as a vehicle 32) is used as a power storage unit. Hereinafter, the vehicle 32 including an in-vehicle battery 33 (see FIG. 2) provided in the vehicle 32 is used. explain. The vehicle 32 can be electrically connected to at least one house 11 in the living area A. When the vehicle 32 has surplus power, the center server 48 prioritizes the system power supply 12 to Surplus power is supplied to other houses 11 in the living area A.

  In the following description, a natural energy power generation unit, a non-natural energy power generation unit, and a power storage unit will be described. However, any power source may be used as long as it includes at least the natural energy power generation unit and the system power source 12. It is not necessary to include natural energy power generation means and power storage means. However, in order to suppress the power consumption of the system power supply 12, it is preferable that at least one of the non-natural energy power generation means and the power storage means is provided.

  As shown in FIG. 3, a power switching device 34 is provided in the house 11. The system power supply 12, the solar power generation device 24, the wind power generation device 26, the fuel cell 28, the storage battery 30, and the in-vehicle battery 33 constituting the power supply unit 20 are connected to the power switching device 34, and the power switching device 34. It is possible to supply power to the distribution board 14 via

  Here, each of the storage battery 30 and the in-vehicle battery 33 (vehicle 32) is connected to the dedicated charging / discharging devices 31 and 32A and connected to the power switching device 34. The charge / discharge devices 31 and 32A have an inverter function for converting DC power into AC power and a converter function for converting AC power into DC power, and convert DC power into AC power according to the voltage, phase, and the like of the system power supply 12 And output to the power switching device 34.

  The charge / discharge devices 31 and 32A are connected to a branch breaker (not shown) of the distribution board 14. Thereby, the charging / discharging devices 31 and 32A operate as an electric device (electric power load), and convert the AC power supplied via the distribution board 14 into DC power by the inverter function, and thereby the storage battery 30 and the vehicle-mounted battery. Charge to 33. Here, the charging / discharging device 32 </ b> A can charge / discharge the in-vehicle battery 33 (vehicle 32) when the vehicle 32 is parked and connected to a parking space (not shown) provided adjacent to the house 11.

  In addition, the general structure which controls charging / discharging so that the storage battery 30 and the vehicle-mounted battery 33 (vehicle 32) may be maintained in the range of the charge amount used as the optimal operation state is applied to the charging / discharging apparatuses 31 and 32A. Moreover, when discharging the accumulated electric power, the charging / discharging devices 31 and 32 </ b> A supply electric power corresponding to the amount of electric power that can be discharged with a preset electric power value (current value) as an upper limit, and the in-vehicle battery 33 ( Discharge from vehicle 32).

  Each of the solar power generation device 24, the wind power generation device 26, and the fuel cell 28 converts the generated power into AC power that matches the voltage and phase of the system power supply 12 and outputs it. A known general configuration can be applied to the configuration including such an inverter function and a converter function.

  Here, the power switching device 34 selects at least one system of power from the power supply unit 20 and outputs it to the distribution board 14. Further, as an example, the power switching device 34 is provided with a backflow prevention function, and the power of the system power supply 12 is prevented from flowing from the power switching device 34 to the system such as the solar power generation device 24. The power of other systems is prevented from flowing to the system power supply 12.

  On the other hand, as shown in FIG. 3, the management control panel 42 forms a HEMS (Home Energy Management System) that manages the energy consumption of the house 11, manages the generated power of the solar power generation device 24, the storage battery 30, etc. It also has functions to control charging and discharging. The management control panel 42 manages the power supplied to the distribution board 14, that is, manages the power consumed by each electrical device 19 in the house 11. Here, as an example, the distribution board 14 and the management control board 42 will be described separately. However, the distribution board 14 and the management control board 42 may be integrated.

  As shown in FIG. 4, the management control panel 42 includes a CPU 44A, a RAM 44B, a ROM 44C, and an HDD 44D, and includes a microcomputer having a general configuration connected to a bus 44E. Various programs and data are stored in the ROM 44C and the HDD 44D used as the storage means, and the CPU 44A performs various processes by executing the programs stored in the ROM 44C and the HDD 44D. At this time, the RAM 44B is used as a work memory.

  The management control board 42 is provided with a network interface (NET I / F) 46. The network I / F 46 is connected to a public line network such as the Internet or a dedicated line network, so that the management control board 42 is predetermined. Are connected to the center server 48. As a result, the management control panel 42 transmits preset data to the center server 48 and can acquire various types of data from the center server 48, and a part of the power management system 10 in the residential area (inside the house 11). ) Functions as HEMS. The management control board 42 is provided (connected) with a U / I 50.

  As shown in FIG. 5, the U / I 50 is provided with a display 52A, a power switch 52B, a menu switch 52C, a speaker 52D, and the like. The display 52A is, for example, a touch panel type using an LCD, thereby displaying various information and touching the display surface (hereinafter referred to as “operation”) to display a user interface displayed on the display 52A. Various information input operations according to (UI) are possible.

  As shown in FIG. 4, the U / I 50 is connected to a bus 44E. As a result, the CPU 44A displays various types of information including information that causes the display 52A of the U / I 50 to function as display means (notification means). Further, the CPU 44A displays a preset UI on the display 52A, and functions as an input means for inputting various types of information by a touch operation corresponding to this display.

  In this embodiment, as shown in FIG. 9A, a selection button 52E (permission), a selection button as an example of a selection unit for determining whether or not to permit power supply to another house on the display 52A. 52F (rejection) is displayed. Then, when the resident touches one of the selection button 52E and the selection button 52F (presses one), it is possible to select whether or not to supply power to other houses.

  The management control board 42 is provided with an input / output interface (hereinafter referred to as an input / output I / F) 54, and the input / output I / F 54 is connected to the bus 44E. In the HEMS of the house 11, it is preferable that each electrical device 19 (see FIG. 3) is connected to the management control panel 42 so that information such as data and control signals can be exchanged. As a result, the management control panel 42 can grasp whether or not each electrical device 19 is operating, the operating state such as power consumption when it is operating, the maintenance state, and the like, and each electrical device as necessary. 19 activation / deactivation can be controlled.

  In the house 11 of this embodiment, the management control panel 42 includes a communication unit 56 as an example. In the management control panel 42, a communication unit 56 is connected to the input / output I / F 54. The management control panel 42 can exchange information with each electrical device 19 via the communication unit 56. As such a communication unit 56, the management control board 42 and each electric equipment 19 may be connected by wire, and may perform wireless communication. As the communication unit 56, any communication method such as communication via a power line, communication via an indoor network using a communication line installed in the house 11 can be applied.

  On the other hand, in the management control panel 42, the power switching device 34 is connected to the input / output I / F 54. The input / output I / F 54 of the management control panel 42 includes a solar power generation device 24, a wind power generation device 26, a fuel cell 28, a charge / discharge device 31 for the storage battery 30, and a charge / discharge device for the in-vehicle battery 33 (vehicle 32). 32A is connected.

  As a result, the management control panel 42 acquires whether or not each of the solar power generation device 24 and the wind power generation device 26 is operating, and the generated power when it is operating. The management control panel 42 controls power generation of the fuel cell 28 and controls charging / discharging of the storage battery 30 and the in-vehicle battery 33 by controlling the operation of the charging / discharging devices 31 and 32A.

  As shown in FIG. 3, the distribution board 14 is provided with a wattmeter 58 (WM). The wattmeter 58 detects the power consumed by the operation of each electrical device 19 with the power supplied from the distribution board 14 (instantaneous value of power consumption, hereinafter referred to as power consumption), and the detected power consumption Output a signal according to. As shown in FIG. 4, the management control panel 42 is provided with an A / D converter 60, and a wattmeter 58 is connected to the input / output I / F 54 via the A / D converter 60.

  The management control panel 42 detects power consumption (hereinafter referred to as power consumption Pc) consumed in the house 11 by receiving a detection signal from the wattmeter 58. Then, the management control panel 42 controls the operation of the power switching device 34 (that is, power supply from the power supply unit 20) according to the power consumption Pc detected by the wattmeter 58, and reduces the power consumption in the house 11. to manage. In this embodiment, the wattmeter 58 is used as an example. However, the wattmeter 58 is not limited to this. For example, the power consumption (power consumption value) is calculated and acquired from the current value detected using the ammeter. Any configuration can be applied as long as it is a configuration that detects consumed power.

  Here, the management control panel 42 detects the power supplied from each system of the power supply unit 20 and the power consumption Pc consumed in the house 11 and can be supplied from the power supply Pc and the power supply unit 20 at the present time. The power source to be supplied to the distribution board 14 is selected based on the above, and the operation of the power switching device 34 is controlled so that power is supplied from the selected power source to the distribution board 14.

  Next, the configuration of the center server 48 will be described.

  As shown in FIG. 6, the center server 48 includes a computer and includes a CPU 71, ROM 72, RAM 73, and input / output port 74. In the center server 48, the CPU 71, the ROM 72, the RAM 73, and the input / output port 74 are connected via a bus 75 such as an address bus, a data bus, and a control bus.

  Connected to the input / output port 74 are a display 76, a mouse 77, a keyboard 78, a hard disk (HDD) 79A, and a disk drive 79B for reading information from various disks (not shown) as various input / output devices. In addition, a network 13 is connected.

  Here, in the center server 48 in the power management system 10 in the residential area shown in FIG. 1, the power usage order of the solar power generation devices 24A, 24B, 24C and the wind power generation devices 26A, 26B, 26C is A priority higher than the usage order is set. Then, the center server 48 supplies power from the solar power generation devices 24A, 24B, 24C and the wind power generation devices 26A, 26B, 26C based on the priority order, and from other power supply units 20 excluding them. The power is managed by controlling to suppress the supply of the power.

  FIG. 7A shows an example of display on the display 52A when setting the priority order of the power supply unit 20 (see FIG. 2). In this setting screen, the current priority, power source name, daytime priority, and nighttime priority are displayed in order from left to right. The administrator can change the settings. In the display of FIG. 7A, the first priority is the photovoltaic power generation device 24, the second is the wind power generation device 26, the third is the storage battery 30 + the in-vehicle battery 33, the fourth is the fuel cell 28, and the fifth is the system power supply 12. It has become.

  As an example, the priority in the daytime and the priority in the nighttime are different. In the daytime, the solar power generation device 24 is first and the wind power generation device 26 is second. In the nighttime, the wind power generation device 26 is first and the sunlight. The power generation device 24 is in second place.

  As shown in FIG. 1, the center server 48 includes power sources (solar power generation device 24, wind power generation device 26, storage battery 30, in-vehicle battery 33 ( 2), any one of the fuel cell 28 and the system power supply 12) is displayed on the U / I 50 (power source information is transmitted to the U / I 50).

  In FIG. 7B, as an example, the power of the solar power generation device 24, the wind power generation device 26, the storage battery 30, and the in-vehicle battery 33 is used in the upper column of the display 52A for XX hours. Is displayed, and a message indicating that power supply from the fuel cell 28 and the system power supply 12 is stopped is displayed in the lower column. As described above, the resident can set the current priority, display a power source that supplies power (or can supply power) to the current power consumption, and stops a power source from the display on the display 52A. Can be clearly understood.

  Furthermore, the center server 48 shown in FIG. 1 is configured so that the surplus power generated by at least one of the solar power generation device 24 and the wind power generation device 26 of one home 11 is surplus. / I50 is set to transmit request information for power supply to other houses 11. The center server 48 selects at least one of the solar power generation device 24 and the wind power generation device 26 of the one house 11 when the selection button 52E is selected in the selection buttons 52E and 52F (see FIG. 9A). Is set to supply power to other houses 11.

  In addition, the center server 48 uses the power generated by the solar power generation device 24 and the wind power generation device 26 in the house 11 in which the power generated by the solar power generation device 24 and the wind power generation device 26 is surplus. When there is the house 11 provided with the storage battery 30 for storing electricity, the U / I 50 of the house 11 having the storage battery 30 is requested to supply power to the other house 11 in preference to the house 11 not having the storage battery 30. It is set to display information.

  In addition, the center server 48 preferentially supplies surplus power of the other houses 11 to the houses 11 in which the outputs of the solar power generation device 24 and the wind power generation device 26 are lower than those of the other houses 11 in the living area A. Is set to

  Further, in the power management system 10 in the residential area, the priority of use of the solar power generation device 24 and the wind power generation device 26 can be set and changed at the U / I 50 of each house 11. And when the setting is changed, the center server 48 is set so as to manage whether the power is supplied to the solar power generation device 24 and the wind power generation device 26 in the priority order after the change.

  Next, the operation of this embodiment will be described.

  FIG. 8 is a flowchart showing an example of processing executed by the management control panel 42 and the center server 48. This flowchart is executed at a preset time interval (for example, about 1 minute to 10 minutes). The power management in each house 11 is executed by the management control panel 42, and the power management between the houses 11A, 11B, and 11C is executed by the center server 48. In the initial state of the power management system 10 in the residential area, power corresponding to the power consumption Pc is supplied to the distribution board 14. Moreover, in description of a flowchart, description of each drawing number is abbreviate | omitted as referring to FIGS. 1-6 about each part which comprises the power management system 10 of a living area.

  In step S10, the power consumption Pc is detected by reading a signal input from the wattmeter 58, and the process proceeds to step S12. It is assumed that the solar power generation device 24 and the wind power generation device 26 are operating.

  Subsequently, in step S12, the generated power Ps of the operating solar power generation device 24 and the generated power Pw of the wind power generation device 26 are read (detected), and the generated power Ps + Pw using natural energy as the current supplyable power. (Hereinafter referred to as generated power Pg) is calculated.

  Subsequently, in step S14, whether or not the generated power Pg exceeds the consumed power Pc is confirmed by comparing the generated power Pg and the consumed power Pc, and when the generated power Pg exceeds the consumed power Pc. Control goes to step S16. On the other hand, when the generated power Pg is less than or equal to the power consumption Pc, the process proceeds to step S22.

  Subsequently, in step S <b> 16, the power switching device 34 is operated so that the generated power Ps of the solar power generation device 24 and the generated power Pw of the wind power generation device 26 are supplied to the distribution board 14. As a result, the generated power Ps and the generated power Pw are supplied to each electrical device 19 via the distribution board 14. In addition, power supply from the system power supply 12, the storage battery 30, and the fuel cell 28 is cut off. Then, the process proceeds to step S18.

  Subsequently, in step S18, the resident is notified by performing a display on the display 52A indicating that the power consumed in the house 11 can be provided by the solar power generation device 24 and the wind power generation device 26. Then, the process proceeds to step S20.

  Subsequently, in step S20, the display 52A is displayed on the display 52A to indicate that power supply from the system power source 12, the storage battery 30, and the fuel cell 28 is stopped, and the process ends.

  In addition, when the difference between the power consumption Pc and the generated power Pg is small, it is conceivable that the power consumption Pc exceeds the generated power Pg when a new electric device 19 is activated. In order to suppress this, for example, it is preferable to provide a margin when it is determined that the generated power Pg exceeds the power consumption Pc (for example, Pg> Pc + α). Further, when a change in the power consumption Pc is measured and there is a possibility that the power consumption Pc increases and exceeds the generated power Pg, the power consumption Pc exceeds the suppliable power (in this case, the generated power Pg). Apply methods such as making judgments.

  On the other hand, in step S22, the discharge power Pb of the storage battery 30 and the in-vehicle battery 33 is detected, and in addition to the generated power Pg, the process proceeds to step S24. That is, the power that can be supplied is Pg + Pb (= Ps + Pw + Pb). The discharge power Pb is only the discharge power of the storage battery 30 when the vehicle 32 is not in a parking space and is not connected to the charge / discharge device 32A. When the remaining capacity of both the storage battery 30 and the in-vehicle battery 33 is small, etc., the discharge power Pb = 0 when the discharge cannot be performed.

  Subsequently, in step S24, the suppliable power (Ps + Pw + Pb) and the power consumption Pc are compared to determine whether the suppliable power (Ps + Pw + Pb) exceeds the power consumption Pc. When the suppliable power (Ps + Pw + Pb) exceeds the power consumption Pc, the process proceeds to step S26. On the other hand, when the suppliable power (Ps + Pw + Pb) is less than or equal to the power consumption Pc, the process proceeds to step S32.

  Subsequently, in step S26, power switching is performed so that the generated power Ps of the solar power generation device 24, the generated power Pw of the wind power generation device 26, and the discharge power Pb of the storage battery 30 and the in-vehicle battery 33 are supplied to the distribution board 14. The device 34 is operated. As a result, the generated power Ps, the generated power Pw, and the discharged power Pb are supplied to each electrical device 19 via the distribution board 14. Further, power supply from the system power supply 12 and the fuel cell 28 is cut off. Then, the process proceeds to step S28.

  Subsequently, in step S28, the display 52A is displayed by displaying on the display 52A that the power consumed in the house 11 can be provided by the solar power generation device 24, the wind power generation device 26, the storage battery 30, and the in-vehicle battery 33. Inform the person. Then, the process proceeds to step S30.

  Subsequently, in step S30, the display 52A is displayed on the display 52A to indicate that power supply from the system power supply 12 and the fuel cell 28 has been stopped, and the process ends. Here, FIG. 7B shows an example of display on the display 52A in step S28 and step S30. The power of the solar power generation device 24, the wind power generation device 26, the storage battery 30, and the in-vehicle battery 33 is shown. A message indicating that the fuel cell 28 and the system power supply 12 have been stopped is displayed.

  On the other hand, in step S32, the generated power Pf of the fuel cell 28 is detected, and in addition to the generated power Pg and the discharged power Pb, the process proceeds to step S34. That is, the power that can be supplied is Pg + Pb + Pf (= Ps + Pw + Pb + Pf).

  Subsequently, in step S34, the suppliable power Ps + Pw + Pb + Pf and the power consumption Pc are compared, and it is determined whether or not the suppliable power Ps + Pw + Pb + Pf exceeds the power consumption Pc. When the suppliable power Ps + Pw + Pb + Pf exceeds the power consumption Pc, the process proceeds to step S36. On the other hand, if the suppliable power Ps + Pw + Pb + Pf is less than or equal to the power consumption Pc, the process proceeds to step S42.

  Subsequently, in step S36, the power generation power Ps of the solar power generation device 24, the power generation power Pw of the wind power generation device 26, the discharge power Pb of the storage battery 30 and the in-vehicle battery 33, and the power generation power Pf of the fuel cell 28 are distributed. The power switching device 34 is operated so that the power is supplied. As a result, the generated power Ps, the generated power Pw, the discharge power Pb, and the generated power Pf are supplied to each electrical device 19 via the distribution board 14. Further, the power supply from the system power supply 12 is cut off. Then, the process proceeds to step S38.

  Subsequently, in step S38, a display indicating that the power consumed in the house 11 can be provided by the solar power generation device 24, the wind power generation device 26, the storage battery 30, the in-vehicle battery 33, and the fuel cell 28 is displayed on the display 52A. Notify residents by doing. Then, the process proceeds to step S40.

  Subsequently, in step S40, the display 52A is notified by displaying on the display 52A that the power supply from the system power supply 12 is stopped, and the process ends.

  On the other hand, in step S42, it is determined whether or not the center server 48 can supply surplus power of the other house 11 (basically, the power generated by the natural energy of the solar power generation device 24 and the wind power generation device 26). . If supply is possible, the process proceeds to step S44. If supply is not possible, the process proceeds to step S50.

  Subsequently, in step S44, the power generation power Ps of the solar power generation device 24, the power generation power Pw of the wind power generation device 26, the discharge power Pb of the storage battery 30 and the in-vehicle battery 33, and the power generation power Pf of the fuel cell 28 are distributed. The supplied power Pe is supplied from the other house 11 to the distribution board 14 via the power transmission switching unit 70. As a result, the generated power Ps, the generated power Pw, the discharge power Pb, the generated power Pf, and the provided power Pe are supplied to each electrical device 19 via the distribution board 14. Further, the power supply from the system power supply 12 is cut off. Then, the process proceeds to step S46.

  Subsequently, in step S46, a display indicating that the power consumed in the house 11 can be covered by the solar power generation device 24, the wind power generation device 26, the storage battery 30, the on-vehicle battery 33, the fuel cell 28, and the provided power Pe. Is notified to the resident. Then, the process proceeds to step S48.

  Subsequently, in step S48, the display 52A is displayed on the display 52A to indicate that the power supply from the system power supply 12 is stopped, and the process ends.

  On the other hand, in step S50, insufficient power is supplied from the system power supply 12 to the distribution board 14, and the process proceeds to step S52.

  Subsequently, in step S52, the power consumed in the house 11 indicates that the solar power generation device 24, the wind power generation device 26, the storage battery 30, the in-vehicle battery 33, the fuel cell 28, and the system power supply 12 are used. The resident is notified by performing the display on the display 52A, and the process ends.

  Next, a method of selecting the power supply source house 11 and the power supply destination house 11 in the living area A will be described.

  In the flowchart shown in FIG. 10, in step S60, the power generation amount (and discharge amount) of the power source (power supply units 20A, 20B, and 20C) of each house 11 (housing 11A, 11B, and 11C) is detected, and the process proceeds to step S62. Transition.

  Subsequently, in step S62, it is determined whether or not there is a house 11 with insufficient power. If there is a house 11 with insufficient power, the process proceeds to step S64, and if not, the process ends. Note that the presence or absence of power shortage in this case is “Yes” when the power consumption is larger by comparing the total power of the power sources excluding the system power supply 12 in the power supply unit 20 and the power consumption. “None” when the power is smaller.

  Subsequently, in step S64, it is determined whether or not there is a house 11 with surplus power (basically, the power generated by the solar power generation device 24 and the wind power generation device 26). The process proceeds to step S66, and if not, the process proceeds to step S78. In addition, in the houses 11A, 11B, and 11C, as an example, on the display 52A, it can be confirmed how much the power generation amount of the solar power generation device 24 is different from the power generation amount of other houses (FIG. 9B). Pm is the average value of the amount of power generated by the solar power generator 24 in each house).

  Subsequently, in step S66, it is determined whether or not there is a house 11 having the storage battery 30 among the houses 11 having surplus power. And when there exists the house 11 which has the storage battery 30, it transfers to step S68, and when it does not exist, it transfers to step S70.

  Subsequently, in step S68, a power supply is requested to the house where the storage battery 30 is located, and the process proceeds to step S72. In this request, a request message and selection buttons 52E and 52F are displayed on the display 52A of the house 11 (see FIG. 9A).

  On the other hand, in step S70, a power supply is requested to a house without the storage battery 30, and the process proceeds to step S72. Also in this request, a request message and selection buttons 52E and 52F are displayed on the display 52A of the house 11.

  Subsequently, in step S72, the resident selects one of the selection buttons 52E and 52F on the display 52A in the house 11 that has received the request for power supply. If “permitted” is selected, the process proceeds to step S74, and if “rejected” is selected, the process proceeds to step S80.

  Subsequently, in step S74, when there are a plurality of houses 11 with insufficient power, the house 11 with low generated power (output) of the solar power generation device 24 and the wind power generation device 26 is selected, and the process proceeds to step S76. On the other hand, if the generated power (output) of the solar power generator 24 and the wind power generator 26 is almost unchanged, the process proceeds to step S78.

  Subsequently, in step S76, electric power is supplied from the other house 11 to the house 11 where the generated power (output) of the solar power generation device 24 and the wind power generation device 26 is low, and the process ends.

  On the other hand, in step S78, power is supplied from the other house 11 to the house 11 with the least generated power, and the process ends.

  In step S80, power is supplied from the system power supply 12 according to the priority order because there is no power supply from the other house 11.

  As described above, in the residential area power management system 10 according to the present embodiment, the center server 48 supplies power from the solar power generation device 24 and the wind power generation device 26 to each of the plurality of houses 11. The power supply from the power source is suppressed more than the solar power generation device 24 and the wind power generation device 26. Thereby, since use of the system power supply 12 is suppressed and natural energy is fully utilized, the electric power generated using the natural energy obtained in the living area A can be used effectively.

  In the residential area power management system 10, the center server 48 displays, on the U / I 50, a power source that consumes power in the house 11 among the plurality of power sources of the power supply unit 20. Thereby, since the resident of the house 11 knows from which power source the consumed electric power is supplied, it can clearly grasp that the power consumption of the system power supply 12 is suppressed. it can.

  Further, in the power management system 10 in the residential area, when the power generated by the solar power generation device 24 and the wind power generation device 26 of one house 11 is surplus, the center server 48 Request information for power supply to other houses 11 is transmitted to the U / I 50. When the permission of power supply to the other house 11 is selected by the selection button 52E, the center server 48 transmits the electricity of the other house 11 from the solar power generator 24 and the wind power generator 26 of the one house 11. Electric power is supplied to the device 19. Thereby, since it is not necessary to increase the power consumption of the charged system power supply 12 in the house 11 in which power is insufficient, an increase in the power charge in the living area A can be suppressed.

  In addition, in the residential area power management system 10, when there is a house 11 that lacks power in the residential area A, the center server 48 has priority over the house 11 that does not have the storage battery 30. The request information for power supply to other houses 11 is transmitted to the U / I 50 of the house 11 having the storage battery 30. When the resident selects the permission to supply power to the other house 11 with the selection button 52E, the center server 48 transmits another power from the solar power generation device 24 and the wind power generation device 26 or the storage battery 30 of the one home 11. Electric power is supplied to the house 11. Thereby, since the number of electric power sources increases, the electric power supplied to other houses 11 in which electric power is insufficient can be secured.

  Further, in the residential area power management system 10, when there is a house 11 with low output of the solar power generation device 24 and the wind power generation device 26, the center server 48 gives priority to the surplus of other homes 11 to the home 11. Supply power. Thereby, in this house 11, use of the other electric power source which does not use natural energy is suppressed, Therefore The increase in the electric power charge in the living area A whole can be suppressed.

  Further, the residential area power management system 10 includes a solar power generation device 24 and a wind power generation device 26 as natural energy power generation means. And the priority of the solar power generation device 24 and the wind power generation device 26 can be changed. Thus, for example, by using the solar power generation device 24 with priority over the wind power generation device in the daytime and using the wind power generation device 26 with priority over the solar power generation device 24 at night, natural energy can be used throughout the day. Since the power generation means can be operated, the natural energy power generation means can be used with priority over other power sources.

  In addition, in the power management system 10 in the residential area, when there is a vehicle 32 that can be electrically connected to at least one house 11 in the residential area A, and the vehicle 32 has surplus power, the center server 48 can Since the surplus power of the vehicle 32 is supplied to the other houses 11 in the living area A preferentially over the power supply 12, the use of the system power supply 12 is suppressed, and the increase in the power charge in the entire living area A is suppressed. Can do. In addition, in the case of HV and PHV, if fuel is contained, the amount of electricity stored above a predetermined amount is regarded as surplus power.

  Further, in the residential area power management system 10, since the power of all the plurality of houses 11 in the residential area A is managed by the single center server 48, the power in the residential area A can be efficiently managed.

  When there is no fuel cell 28, the priority order of power to be used is 1) natural energy, 2) natural energy stored in the storage battery 30, 3) surplus power of the vehicle 32 (on-vehicle battery 33), 4) grid power 12 and Become.

  In addition, this invention is not limited to said embodiment.

  In the power supply unit 20, any of the storage battery 30, the in-vehicle battery 33, and the fuel cell 28 may be prioritized as a power source that is prioritized next to the solar power generation device 24 and the wind power generation device 26. In addition, the use order of the system power supply 12 is the last.

  Moreover, when neither the solar power generation device 24 nor the wind power generation device 26 is generating electricity (there is almost no output), it is supplied from another power source of the power supply unit 20 based on the set priority order. Can be done.

  Furthermore, when all the power sources of the power supply unit 20 are used, it is displayed on the display 52A that the power consumption in the house 11 is too large, and the resident is informed to reduce the power consumption. Good.

  In addition, natural energy is not limited to sunlight and wind power as long as it can be used, and may be hydropower or thermal power. In the case of hydroelectric power generation, for example, a water turbine may be provided in a stream.

  Moreover, the number of the houses 11 in the living area A is not limited to three, and may be two or four or more. The power supply unit 20 may be provided in at least one of a plurality of buildings (for example, houses 11A, 11B, and 11C).

10 Residential area power management system 11 Housing (example of building)
12 system power supply 19 electric equipment 20A power supply part (an example of a plurality of power sources)
20B power supply unit (an example of a plurality of power sources)
20C power supply unit (an example of multiple power sources)
24 Solar power generation device (an example of natural energy generation means and first power generation means)
26 Wind power generator (an example of natural energy power generation means and second power generation means)
32 Vehicle 48 Center server (an example of power management means and center)
50A U / I (an example of display means)
50B U / I (an example of display means)
50C U / I (an example of display means)
52E Selection button (example of selection means)
52F selection button (example of selection means)
A living area

Claims (5)

A plurality of power sources provided in at least one of a plurality of buildings in a predetermined living area, including a natural energy power generation means for generating power using natural energy, and a system power supply, and supplying power to the electrical equipment of the building When,
Display means provided in the plurality of buildings for displaying information;
A priority order in which the use order of the natural energy power generation means is higher than the use order of the grid power supply is set, and based on the priority order, power is supplied from the natural energy power generation means, and from other power sources. Power management means for managing power by performing control that suppresses supply of power more than that of the natural energy power generation means , wherein the power source in which power is consumed in each of the buildings among the plurality of power sources. Power management means for displaying on the display means ;
I have a,
In the living area, it is possible to supply power from the plurality of power sources provided in one building to the other building,
The display means provided in one of the buildings is provided with a selection means as to whether or not to allow power supply to the other building,
When the power generated by the natural energy power generation unit of one building is surplus, the power management unit is configured to request power supply to another building on the display unit of the one building. And when the permission is selected by the selection means, power is supplied from the natural energy power generation means of one building to the other building, and the power generated by the natural energy power generation means is surplus. And when there is the building provided with a storage battery for storing the electric power generated by the natural energy power generation means, the display means of the building having the storage battery supplies power to other buildings. Residential area power management system that displays request information .   The living area power management system according to claim 1, wherein the power management unit manages the power of all of the plurality of buildings in the living area in one center. Said power management means, the building output is low of the natural energy power generation device in comparison with the other said building in said residential area, according to claim 1 or claim to supply preferentially the surplus power of the other of said building The power management system for residential areas as described in 2 . The natural energy power generation means includes first power generation means for receiving sunlight to generate power, and second power generation means for generating power with other natural energy different from sunlight,
The living power management system according to any one of claims 1 to 3 , wherein the power management means is capable of changing a priority order of use of the first power generation means and the second power generation means. . When there is a vehicle that can be electrically connected to at least one of the buildings in the living area, and the vehicle has surplus power, the power management means prioritizes surplus power of the vehicle over the system power supply. The power management system for a residential area according to any one of claims 1 to 4 , wherein the power is supplied to another building in the residential area.