Power supply system, power supply method, and program

Abstract

To provide a power supply system, a power supply method, and a program, capable of increasing a captive consumption rate of power from a dispersion type power source and reducing low voltage collective reception electric energy.SOLUTION: A power supply system comprises: a receiving board for low voltage collective reception of power from a line; a high-order meter device for measuring consumption electric energy of power received by the receiving board; a distribution board having a plurality of breakers for distributing power received by the receiving board to a shared part and respective dwelling units of a multiple dwelling house; low-order meter devices that are provided between the plurality of breakers of the distribution board and loads of the respective dwelling units; a dispersion type power source that comprises at least a storage battery and a photovoltaic power generation device; and a controller that controls the dispersion type power source and detects outage of the line.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a power supply system, a power supply method, and a program. [Background technology]

[0002] There is known a power distribution system in which a contract is made with an electric power company and power supplied from a power grid is distributed to each unit in an apartment building. Contracts with electric power companies include a lump-sum contract for high-voltage power and a lump-sum contract for low-voltage power. In the case of a lump-sum contract for high-voltage power, a high-voltage power receiving and transforming device is required to supply power from the power grid to each unit (see, for example, Patent Document 1).

[0003] In recent years, there has been a demand for the use of renewable energy, and some apartment buildings are equipped with solar panels and storage batteries. Furthermore, there is a demand for ZEH (Net Zero Energy Houses), which are homes that aim to achieve zero annual primary energy consumption by significantly improving the insulation performance of the exterior and introducing highly efficient equipment systems to achieve significant energy savings while maintaining the quality of the indoor environment, and then introducing renewable energy. For this reason, apartment buildings such as those mentioned above are required to significantly improve insulation performance and install solar panels and storage batteries. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-74760 Summary of the Invention [Problem to be solved by the invention]

[0005] However, conventional techniques have not effectively utilized the power from distributed power sources.

[0006] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a power supply system, a power supply method, and a program that can increase the self-consumption rate of power from distributed power sources and reduce the amount of low-voltage collective power received. [Means for solving the problem]

[0007] (1) In order to achieve the above object, one aspect of the present invention is a system including: a power receiving panel that receives low-voltage power from a grid in one go; a host meter device that measures the amount of power consumed by the power receiving panel; a distribution panel having a plurality of breakers for distributing the power received by the power receiving panel to common areas and each dwelling unit in an apartment building; a host meter device that is installed between the plurality of breakers of the distribution panel and the loads of each dwelling unit; a distributed power source that includes at least a storage battery and a solar power generation device; and a control device that controls the distributed power source and detects a power outage in the grid. a switching panel that determines whether the power is being supplied from the grid or the power of the distributed power source supplied via the control device, and switches between the grid power and the power of the distributed power source to supply power to the common section; Equipped with When the control device detects a power outage in the system, the control device supplies the power stored in the storage battery to the common section, without going through the distribution board, to the switching board. It is a power supply system.

[0008] According to the power supply system of this embodiment, it is possible to increase the self-consumption rate of power from distributed power sources and reduce the amount of low-voltage collective receiving power.

[0010] According to the power supply system of this embodiment, when a power outage is detected, power stored in the storage battery can be supplied to the common area.

[0011] ( 2 In one aspect of the present invention, a power supply node that supplies power from the distributed power source may be provided between the power receiving panel and the distribution panel.

[0012] ( 3 In one aspect of the present invention, a power supply node that supplies power from the distributed power sources may be provided between the grid and the upper level meter device.

[0013] ( 4In one aspect of the present invention, a power supply node that supplies power from the distributed power sources may be provided between the upper level meter device and the power receiving panel.

[0014] ( 5 ) In one aspect of the present invention, a power supply node that supplies power from the distributed power source may be provided between the distribution board and the lower-level meter device.

[0015] ( 6 ) In one aspect of the present invention, the lower-level meter device may include a first lower-level meter device for the common area and a second lower-level meter device for the dwelling unit, and a power supply node that supplies power from the distributed power source may be provided between the distribution board and the second lower-level meter device.

[0016] ( 7 ) In one aspect of the present invention, the lower meter device may include a first lower meter device for the common area and a second lower meter device for the dwelling unit, and may further include a branch section connected between the distribution board and the second lower meter device, and a power supply node that supplies power from the distributed power source may be provided between the branch section and the second lower meter device.

[0017] ( 2 )~( 7 According to the power supply system of this embodiment, the self-consumption rate of power from distributed power sources can be increased, and the amount of low-voltage collective power received can be reduced.

[0018] ( 8In order to achieve the above object, one aspect of the present invention is a system for controlling a power receiving panel that collectively receives low-voltage power from a grid, a host meter device that measures the amount of power consumed by the power receiving panel, a distribution panel having a plurality of breakers for distributing the power received by the power receiving panel to a common area and each dwelling unit in an apartment building, that distributes the power received by the power receiving panel to the common area and each dwelling unit, a host meter device that is provided between the plurality of breakers of the distribution panel and a load of each dwelling unit measures the amount of power consumed by each dwelling unit, and a control device that controls a distributed power source that includes at least a storage battery and a solar power generation device, and that detects a power outage in the grid. death , A power supply method in which a switching panel determines whether power is being supplied from the grid or from the distributed power source supplied via the control device, and switches between the grid power and the distributed power source to supply power to the common area, wherein when the control device detects a power outage in the grid, the control device supplies the power stored in the storage battery to the common area via the switching panel without going through the distribution panel. This is a power supply method.

[0019] According to the power supply method of this embodiment, it is possible to increase the self-consumption rate of power from distributed power sources and reduce the amount of low-voltage collective receiving power.

[0020] ( 9 In order to achieve the above object, one aspect of the present invention is to provide the above-mentioned (1) to ( 7 ) is a program for causing a computer to function as a control device for a power supply system according to any one of the above.

[0021] According to the program of this embodiment, it is possible to increase the self-consumption rate of power from distributed power sources and reduce the amount of low-voltage collective receiving power. [Effects of the Invention]

[0022] According to the present invention, it is possible to increase the self-consumption rate of power from distributed power sources and reduce the amount of low-voltage collective power received. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a diagram illustrating an overview of a power supply system according to an embodiment. [Figure 2] FIG. 10 is a diagram showing an overview of another power supply system according to an embodiment. [Figure 3]FIG. 1 is a diagram for explaining an overview of an apartment building equipped with a solar power generation system and a storage battery. [Figure 4] 1 is a diagram illustrating an example of the configuration of an apartment building facility according to a first embodiment. [Figure 5] 1 is a diagram showing an example of the configuration of an apartment building facility in the case where there is one control device according to the first embodiment. FIG. [Figure 6] 4 is a flowchart of a processing procedure of the control device according to the first embodiment. [Figure 7] FIG. 10 is a diagram illustrating an example of the configuration of an apartment building facility according to a second embodiment. [Figure 8] FIG. 10 is a diagram illustrating an example of the configuration of an apartment building facility according to a third embodiment. [Figure 9] FIG. 10 is a diagram illustrating an example of the configuration of an apartment building facility according to a fourth embodiment. [Figure 10] FIG. 13 is a diagram illustrating an example of the configuration of an apartment building facility according to a fifth embodiment. [Figure 11] FIG. 13 is a diagram illustrating an example of the configuration of an apartment building facility according to a sixth embodiment. [Figure 12] FIG. 13 is a diagram illustrating an example of the configuration of an apartment building facility according to a seventh embodiment. [Figure 13] FIG. 2 is a diagram illustrating an example of a power supply path from a distribution board. DETAILED DESCRIPTION OF THE INVENTION

[0024] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that in the drawings used in the following description, the scale of each component has been appropriately changed so that each component can be recognized. The embodiment described below is merely an example, and the embodiment to which the present invention is applied is not limited to the following embodiment. In all the drawings for explaining the embodiments, the same reference numerals are used for components having the same functions, and repeated explanations will be omitted. Furthermore, in this application, "based on XX" means "based on at least XX," and includes cases where it is based on other elements in addition to XX. Furthermore, "based on XX" is not limited to cases where XX is used directly, but also includes cases where it is based on XX that has been calculated or processed. "XX" is any element (for example, any information).

[0025] <Business model overview> First, an outline of the business model in the embodiment will be explained with reference to FIGS. 1 is a diagram showing an overview of a power supply system according to an embodiment. As shown in FIG. 1, the power supply system 1 includes, for example, a home 2, a home 3, a power company 4, an agency company 5, a home 6, and a power supply destination 7.

[0026] The residence 2 is an apartment building or a single-family home. The residence 2 is equipped with a solar power generation system.

[0027] The residence 3 is an apartment building or a single-family home. The residence 3 is equipped with a solar power generation system and a storage battery.

[0028] Electric power company 4 purchases surplus electricity from residence 2 and residence 3 through intermediary company 5. Note that electric power company 4 may purchase electricity from residence 2 that does not have a storage battery at the standard price, and purchase electricity from residence 3 that has a storage battery at a premium price higher than the standard price. Electric power company 4 supplies the electricity purchased through intermediary company 5 to, for example, residence 6 constructed by intermediary company 5 and to electricity destination 7 of intermediary company 5.

[0029] The builders of houses 2 and 3 may rent their roofs etc. to intermediary company 5. In that case, intermediary company 5 will install a solar power generation system on the roof rented from the builder of house 2 and will maintain and manage the solar power generation system. Intermediary company 5 will install a solar power generation system on the roof rented from the builder of house 3, install a storage battery, and will maintain and manage the solar power generation system and storage battery. Intermediary company 5 will act as an intermediary for electricity from electric power company 4.

[0030] The house 6 is, for example, a house constructed by the agency company 5. The house 6 is an apartment building or a single house.

[0031] The power supply destinations 7 are operated by the distributor company 5 or the power company 4, and are, for example, offices 71, exhibition halls 72, and factories 73.

[0032] Fig. 2 is a diagram showing an outline of another power supply system according to an embodiment. The power supply system 1A shown in Fig. 2 includes, for example, a house 20 under contract with an agency company 5 (Fig. 1), an electric vehicle 23, a consumer 24, an owner (builder) 25 of the house 20, a wholesale electricity market 26, a second business operator 27, a house 28, and an office 29 of a first business operator.

[0033] The house 20 is, for example, a rental apartment building, and is equipped with a distributed power source 21 having, for example, a solar power generation system and a storage battery. Electricity generated or stored in distributed power source 21 is supplied at a low cost to the facilities of multiple consumers 24 residing in residence 20 via the first business operator. During a power outage, distributed power source 21 supplies electricity stored in a storage battery to, for example, a common area. Distributed power source 21 may also be linked to, for example, an electric vehicle 23 of consumer 24 to supply power to the electric vehicle.

[0034] The first business operator 22 is, for example, the intermediary company 5 in FIG. 1. The first business operator 22 supplies surplus electricity generated by the residence 20 to the second business operator. The first business operator 22 also purchases electricity at a low price from the second business operator 27. The relationship between the first business operator 22 and the second business operator 27 is as shown in the dashed rectangle g10. Furthermore, if the owner 25 rents the roof or the like of the residence 20 to the first business operator, the first business operator 22 may pay the owner 25 rent for the roof, for example, according to the number of solar cell modules or the amount of electricity generated or consumed.

[0035] The house 28 is another house whose roof is rented to the first business operator 22. A solar cell module has been installed on the roof of the house 28 by the first business operator. The second business operator 27 has a power grid. The second business operator 27 purchases surplus power generated by the distributed power source 21 via the first business operator 22, and purchases power from the wholesale power market 26. The second business operator 27 purchases surplus power from homes 28. The second business operator 27 supplies this power to the first business operator's business establishments 29 and the like. The system shown in FIG. 2 is an example and is not limited to this.

[0036] FIG. 3 is a diagram illustrating an overview of an apartment building equipped with a solar power generation system and a storage battery. As shown in FIG. 3, the house 3 includes a solar power generation system 31, a storage battery 32, and a higher-level metering device 33. The house 3 also includes a common area 34 and a living area 35. The common area 34 includes, for example, lighting, a common entrance unit, an electric key control device, an outlet, a telephone security box, etc. The living area 35 includes, for example, six units 101 to 103 and 201 to 203. Each unit in the living area 35 includes a lower-level metering device 36. Note that, for example, power conditioners, breakers, etc. are omitted from the example of FIG. 3.

[0037] In the business model of the embodiment, it is the intermediary company that concludes a lump-sum contract for low-voltage electricity with the electric power company. The residents of the residential area 35 then conclude an electricity supply contract with the intermediary company and pay their electricity bills to the intermediary company.

[0038] As described above, under normal circumstances, the electricity received collectively from the low-voltage power source and the generated electricity are supplied to the common area 34 and the residential area 35. For example, during the day, the electricity generated by the solar power generation system 31 is supplied to each residence and stored in the storage battery 32. Then, at night, the electricity stored in the storage battery 32 is supplied to each residence. In this way, in the embodiment, the generated electricity is used in the apartment building as much as possible, and the amount of electricity purchased from the power utility company can be reduced.

[0039] In the event of a power outage, power is supplied to the common area 34 from the storage battery 32. Also, in the event of a power outage, power for wireless communication is supplied to each unit in the residential area 35 from the common area 34 to, for example, an access point 37 via, for example, a LAN (Local Area Network) cable.

[0040] 1 to 3 are only an outline of the configuration, and the present invention is not limited to this. The number of units in the apartment building may be five or less, or seven or more.

[0041] As described above, according to the business model of the embodiment, by having the tenants purchase the generated electricity, it is possible to raise the tenants' awareness of contributing to the environment and encourage local production and consumption of electricity. According to the business model of the embodiment, by using the purchased electricity at the electricity supply destination 7 operated by the intermediary company 5 or the electric power company 4, it is possible to contribute to replacing the electricity consumed in the business activities of the intermediary company 5 and the electric power company 4 with renewable energy, and more broadly, to the realization of a carbon-neutral society.

[0042] Furthermore, according to the business model of the embodiment, building owners can possess rental housing with high environmental value and resilience without incurring the cost of installing and maintaining facilities, thereby strengthening their competitiveness in attracting tenants and satisfying their need to participate in a decarbonized society. Furthermore, according to the business model of the embodiment, tenants can purchase electricity with a high proportion of renewable energy at a lower price than major power companies, which not only fosters a sense of contribution to a decarbonized society, but also allows them to, for example, charge their smartphones using the electricity supplied to common areas from the storage battery in the event of a power outage due to a disaster, which helps to alleviate information shortages after a disaster.

[0043] In a conventional apartment building, for example, if a solar cell power generation system or the like is installed in each residence, the amount of power used by each residence differs, so for example, power from an unoccupied residence is sold and not distributed to a residence that consumes a lot of power, and the shortfall in power must be purchased from the power company. In contrast, in the embodiment, if there is surplus power, it can be distributed to residences that need it.

[0044] First Embodiment Fig. 4 is a diagram showing an example of the configuration of an apartment building facility according to this embodiment. The apartment building shown in Fig. 4 is an example of a house 3 equipped with a solar power generation system and a storage battery. The apartment building facility 100 includes an upper meter device 101, a power receiving panel 102, a sensor 103, a distributed power source 104, a control device 105, a distribution panel 106, a lower meter device 107, a distribution panel 108, a switching panel 109, a common area 110, a lower meter device 111, a customer facility 112, a lower meter device 113, a customer facility 114, and a branching area 115. The apartment building facility 100 is connected to a grid 10 from, for example, an electric power company. The grid 10 is a low-voltage collective power receiving system.

[0045] In the apartment building facility 100 of this embodiment, a power supply node 121 that supplies power from a distributed power source 104 is provided between the power receiving panel 102 and the distribution panel 106. As will be described later, the power supply node 121 includes, for example, a sensor 103 and a terminal block (FIG. 13).

[0046] 4, solid connection lines are power lines, chain lines are signal lines, and dashed lines are communication lines capable of supplying power, for example. Note that earth wires and the like are omitted from the illustration in FIG. 4.

[0047] 4 shows two units as an example of a customer facility for the sake of simplicity, but the number of units in the apartment building facility 100 is not limited to this, as mentioned above. The apartment building facility 100 may also be equipped with an output control device that includes, for example, a remote control for controlling the output of the solar cell module 1041, a device for accepting remote operation from outside, etc. The apartment building facility 100 may also be equipped with, for example, a solar power expansion panel so that it can accommodate the addition of solar cell modules.

[0048] The upper meter device 101 has an input side connected to a system 10 from a power company, and an output side connected to the input side of a power receiving panel 102 . The power receiving board 102 has an output side connected to an input side of a distribution board 106 and a first output side of a control device 105 via a power feeding node 121 . The power receiving panel 102 has an output side connected to the input side of the lower-level meter device 107 and the input side of the branching section 115 . The output side of the lower-level meter device 107 is connected to the input side of a distribution board 108 . The distribution board 108 has an output side to which a first input side of a switching board 109 and an outlet 1103 in a common area 110 are connected. The second output side of the control device 105 is connected to the second input side of the switchboard 109, and the router 1101 and the outlet 1102 of the common section 110 are connected to the output side. The control device 105 has a solar cell module 1041 connected to a first control side and a storage battery 1042 connected to a second control side. Branching section 115 has a first output side connected to the input side of lower-level meter device 111, and a second output side connected to the input side of lower-level meter device 113. The lower-level meter device 111 is connected to a customer facility 112 on the output side. The lower-level meter device 113 has a customer facility 114 connected to its output side.

[0049] The host meter device 101 is a meter for measuring the amount of power contracted with an electric power company, and is a collective power receiving meter. The host meter device 101 measures the amount of power consumed by the multiple customer facilities (112, 114) and the amount of power consumed by the common area 110. The host meter device 101 may be, for example, a smart meter.

[0050] The power receiving panel 102 is connected to the upper meter device 101 and receives power from the grid 10 through low-voltage bulk power reception. The power receiving panel 102 includes, for example, a current transformer and a breaker 1061 for the grid 10. The power receiving panel 102 supplies the received power to the distribution panel 106.

[0051] The sensor 103 is connected between the power receiving board 102 and the distribution board 106, and detects the direction of the current flowing between the distribution boards 106. The sensor 103 outputs the detection result to the control device 105.

[0052] The distributed power source 104 includes at least a solar cell module 1041 and a storage battery 1042. The distributed power source 104 may also include a fuel cell, a wind power generation system, or the like.

[0053] The control device 105 includes a first control device 1051 and a second control device 1052. The first control device 1051 and the second control device 1052 are, for example, power conditioners. The first control device 1051 controls the solar cell module 1041. The second control device 1052 controls the storage battery 1042. The control device 105 converts DC electricity generated by the solar cell module 1041 into AC electricity that can be used in the home. The control device 105 converts the voltage of surplus DC electricity generated by the solar cell module 1041 that is not used in the common area 110 or the customer facilities (112, 114) into a voltage that can be charged to the storage battery 1042, and stores the converted voltage in the storage battery 1042. When the amount of power generated by the solar cell module 1041 is low, the control device 105 supplies the power stored in the storage battery 1042 to the common area 110 and the customer facilities (112, 114). The control device 105 controls the charging and discharging of the storage battery based on the detection result indicating the direction of current flow detected by the sensor 103. The control device 105 detects the presence or absence of power supply from the grid side, and if it detects that a power outage has occurred, it supplies the power stored in the storage battery 1042 to the router 1101 and the outlet 1102 in the common area 110 via the switchboard 109.

[0054] The distribution board 106 includes, for example, a plurality of breakers 1061 and sensors 103 for each branch destination. The distribution board 106 branches the power received by the power receiving board 102 during grid-connected operation into a plurality of branches and distributes it to the common section 110 and customer facilities (112, 114). The distribution board 106 also branches the power supplied via the control device 105 into a plurality of branches and distributes it to the common section 110 and customer facilities (112, 114). Note that if the apartment building has multiple floors, the distribution board 106 may distribute the power by floor.

[0055] The lower level meter device 107 is a meter that measures the power consumption for the common area 110 .

[0056] The distribution board 108 supplies power to a switching board 109 and an outlet 1103 in a common area 110 .

[0057] The switching board 109 determines whether the power is coming from the grid 10 or the control device 105 and switches between the power from the grid and the power supplied via the control device 105 to supply power to the router 1101 and the outlet 1102 in the common area 110. Note that, as shown in FIG. 4, during a power outage, the power of the storage battery 1042 is supplied to the switching board 109 directly from the control device 105 without going through the distribution board 106.

[0058] The common area 110 is, for example, an electrical facility such as a lobby, hallway, management office, or meeting hall of an apartment building. The common area 110 is equipped with, for example, a router 1101, an outlet 1102, and an outlet 1103. Note that power is supplied to the outlet 1103 under normal circumstances, but is not supplied during a power outage. Power is not supplied to the router 1101 and the outlet 1102 under normal circumstances, but is supplied during a power outage.

[0059] The lower-level meter device 111 is a meter that measures the power consumption of the customer facility 112 .

[0060] The customer facility 112 is, for example, a first residential facility of the apartment building facility 100. The customer facility 112 includes, for example, an access point 1121 and a load 1122 (such as an outlet or a light).

[0061] The lower-level meter device 113 is a meter that measures the power consumption of the customer facility 114 .

[0062] The customer facility 114 is, for example, a second residential facility of the apartment building facility 100. The customer facility 114 includes, for example, an access point 1141 and a load 1142 (such as an outlet or a light).

[0063] The intermediary company 5 acquires the results measured by the lower-level meter devices (107, 111, 113), calculates the power consumption based on the acquired results, and collects the electricity bill from the residents of the consumer facilities (112, 114). The results measured by the lower-level meter devices (107, 111, 113) may be acquired by the control device 105, for example, and output to the electric power company 4.

[0064] 4 shows an example in which the apartment building facility 100 includes a first control device 1051 that controls the solar cell module 1041 and a second control device 1052 that controls the storage battery 1042, but the present invention is not limited to this. As shown in FIG. 5, in the apartment building facility 100A, one control device 105A may control the solar cell module 1041 and the storage battery 1042. FIG. 5 is a diagram showing an example of the configuration of the apartment building facility in the case where one control device according to this embodiment is used.

[0065] The upper meter device 101 has an input side connected to a system 10 from a power company, and an output side connected to the input side of a power receiving panel 102 . The power receiving board 102 has an output side connected to an input side of the distribution board 106 and, via a power feeding node 121, a first output side of the control device 105A. The distribution board 106 has an input side of a lower-level meter device 107 and an input side of a branching section 115 connected to its output side. The output side of the lower-level meter device 107 is connected to the input side of a distribution board 108 . The distribution board 108 has an output side to which a first input side of a switching board 109 and a socket 1103 in a common area 110 are connected. The second input side of the switchboard 109 is connected to the second output side of the control device 105A, and the router 1101 and the outlet 1102 of the common section 110 are connected to the output side. The control device 105A has a distributed generation 104 connected to its control side. Branching section 115 has a first output side connected to the input side of lower-level meter device 111, and a second output side connected to the input side of lower-level meter device 113. The lower-level meter device 111 is connected to a customer facility 112 on the output side. The lower-level meter device 113 has a customer facility 114 connected to its output side.

[0066] 4 and 5, the sensor 103 may be provided in, for example, the power receiving panel 102. In this case, however, the sensor must be capable of handling large currents in order to detect all currents flowing through the power receiving panel 102.

[0067] (Operation during normal operation and power outage) Next, examples of operation during normal operation and during power outage operation will be described with reference to FIG. Under normal circumstances, power generated by the solar cell module 1041 is supplied to the distribution board 106 via the control device 105. The distribution board 106 supplies the supplied power to the outlet 1103 in the common area 110 and to the customer facilities (112, 114). When the generated power alone is insufficient to meet the demand, the power receiving board 102 supplies power from the grid 10 to the outlet 1103 in the common area 110 and to the customer facilities (112, 114). When there is surplus power generated by the solar cell module 1041, the control device 105 charges the storage battery 1042 and then sells the generated power to the grid 10 via the power receiving board 102. Note that the outlet 1103 that supplies power to the common area 110 under normal circumstances is an example and is not limited to this. For example, power is also supplied to lights installed in the common area 110, a control device for an electronic key at the entrance, and the like.

[0068] During a power outage, the control device 105 detects whether or not there is power supply from the grid, and supplies the power stored in the storage battery 1042 to the router 1101 and the outlet 1102 in the common area 110 via the switchboard 109. Note that during a power outage, if the solar cell module 1041 is generating power, the control device 105 may supply the power generated by the solar cell module 1041 to the distribution board 106. In this case, power may also be supplied from the distribution board 106 to consumer facilities (112, 114). Note that during a power outage, the router 1101 and the outlet 1102 supplying power to the common area 110 are just an example, and the present invention is not limited to this. For example, power may also be supplied to an emergency light installed in the common area 110, a control device for an electronic key at the entrance, and the like.

[0069] 6 is a flowchart of a processing procedure for the control device according to this embodiment to output power from the storage battery 1042. Note that FIG. 6 shows an example of processing in the configuration described with reference to FIG.

[0070] (Step S1) The control device 105 detects whether or not a power outage has occurred by detecting whether or not there is a power supply from the grid side. If the control device 105 determines that a power outage has occurred (step S1; YES), the control device 105 proceeds to the processing of step S2. If the control device 105 determines that a power outage has not occurred (step S1; NO), the control device 105 proceeds to the processing of step S4.

[0071] (Step S2) The control device 105 stops supplying power from the storage battery 1042 to the customer facilities (112, 114) and supplies power to the router 1101 and the outlet 1102 in the common area 110.

[0072] (Step S3) The control device 105 supplies power via, for example, a wireless communication access point, for example, a LAN cable, of the customer facilities (112, 114). After the process, the control device 105 returns to the process of step S1.

[0073] (Step S4) The control device 105 acquires the detection result detected by the sensor 103.

[0074] (Step S5) Based on the detection result of the sensor 103, the control device 105 determines whether or not it is possible to output power from the storage battery 1042 to the outlet 1103 of the common part 110 and the customer facilities (112, 114). If the control device 105 determines that it is possible to output power to the outlet 1103 of the common part 110 and the customer facilities (112, 114) (step S5; YES), it proceeds to processing of step S6. If the control device 105 determines that it is not possible to output power to the outlet 1103 of the common part 110 and the customer facilities (112, 114) (step S5; NO), it proceeds to processing of step S7.

[0075] (Step S6) The control device 105 outputs the power stored in the storage battery 1042 to the outlet 1103 in the common area 110 and the customer facilities (112, 114). After the process, the control device 105 returns to the process of step S1.

[0076] (Step S7) The control device 105 stops supplying the power stored in the storage battery 1042 to the outlet 1103 in the common area 110 and the customer facilities (112, 114). After the process, the control device 105 returns to the process of step S1.

[0077] The processing procedure and processing contents shown in FIG. 6 are merely an example and are not limited to this.

[0078] As described above, this embodiment includes a power receiving panel 102 that receives low-voltage power from the grid 10 in one go, an upper meter device 101 that measures the amount of power consumed by the power receiving panel 102, a distribution panel 106 that has multiple breakers 1061 for distributing the power received by the power receiving panel 102 to common areas and each dwelling unit in the apartment building, lower meter devices (107, 111, 113) that are installed between the multiple breakers of the distribution panel 106 and the loads of each dwelling unit, a distributed power source 104 that has at least a storage battery 1042 and a solar power generation device (solar cell module 1041), and a control device 105 that controls the distributed power source 104 and detects power outages in the grid 10, and a power supply node 121 that supplies power from the distributed power source 104 is installed between the power receiving panel 102 and the distribution panel 106.

[0079] As a result, according to this embodiment, it is possible to increase the self-consumption rate of power from the distributed power sources 104 and reduce the amount of power received in a low-voltage lump sum. Furthermore, according to this embodiment, a power outage is detected, and when a power outage is detected, power is not supplied to the residence, but is instead supplied to the common area 110 from the storage battery 1042. As a result, according to this embodiment, emergency power can be secured in an apartment building.

[0080] Second Embodiment Fig. 7 is a diagram showing an example of the configuration of an apartment building facility according to this embodiment. The apartment building shown in Fig. 7 is an example of a house 3 equipped with a photovoltaic power generation system and a storage battery. The apartment building facility 100B includes an upper meter device 101, a power receiving panel 102, a sensor 103, a distributed power source 104, a control device 105B, a distribution panel 106, a lower meter device 107, a distribution panel 108, a switching panel 109, a common area 110, a lower meter device 111, a customer facility 112, a lower meter device 113, a customer facility 114, and a branching area 115. The apartment building facility 100B is connected to a grid 10 from, for example, an electric power company.

[0081] The upper meter device 101 has an input side connected to the system 10 from the electric power company and the first output side of the control device 105B via a power supply node 121, and an output side connected to the input side of the power receiving panel 102. The output side of the power receiving board 102 is connected to the input side of the distribution board 106 . The distribution board 106 has an input side of a lower-level meter device 107 and an input side of a branching section 115 connected to its output side. The output side of the lower-level meter device 107 is connected to the input side of a distribution board 108 . The distribution board 108 has a first output side connected to the outlet 1103 in the common area 110 and a second output side connected to the first input side of the switching board 109 . The second input side of the switchboard 109 is connected to the second output side of the control device 105B, and the router 1101 and the outlet 1102 of the common section 110 are connected to the output side. The control device 105B has the distributed generation 104 connected to its control side. Branching section 115 has a first output side connected to the input side of lower-level meter device 111, and a second output side connected to the input side of lower-level meter device 113. The lower-level meter device 111 is connected to a customer facility 112 on the output side. The lower-level meter device 113 has a customer facility 114 connected to its output side.

[0082] 7, in the apartment building facility 100B of this embodiment, a power supply node 121 that supplies power from a distributed power source 104 is provided between the grid 10 and the upper meter device 101. Note that, as in the first embodiment, two control devices 105B may be provided, one for controlling the solar cell module 1041 and the other for controlling the storage battery 1042.

[0083] The control content and control procedure of the control device 105B are the same as those in FIG. 6 of the first embodiment.

[0084] As described above, this embodiment includes a power receiving panel 102 that receives power from the grid 10 at low voltage in one go, an upper meter device 101 that measures the amount of power consumed by the power receiving panel 102, a distribution panel 106 having multiple breakers 1061 for distributing the power received by the power receiving panel 102 to common areas and each dwelling unit in the apartment building, lower meter devices (107, 111, 113) that are installed between the multiple breakers of the distribution panel 106 and the loads of each dwelling unit, a distributed power source 104 that has at least a storage battery 1042 and a solar power generation device (solar cell module 1041), and a control device 105B that controls the distributed power source 104 and detects power outages in the grid 10, and a power supply node 121 that supplies power from the distributed power source 104 is installed between the grid 10 and the upper meter device 101.

[0085] According to this embodiment, the same effects as those of the first embodiment can be obtained.

[0086] <Third embodiment> Fig. 8 is a diagram showing an example of the configuration of an apartment building facility according to this embodiment. The apartment building shown in Fig. 8 is an example of a house 3 equipped with a photovoltaic power generation system and a storage battery. The apartment building facility 100C includes an upper meter device 101, a power receiving panel 102, a distributed power source 104, a control device 105C, a distribution panel 106, a lower meter device 107, a distribution panel 108, a switching panel 109, a common area 110, a lower meter device 111, a customer facility 112, a lower meter device 113, a customer facility 114, and a branching area 115. The apartment building facility 100C is connected to a grid 10 from, for example, an electric power company.

[0087] The upper meter device 101 has an input side connected to the grid 10 from the electric power company, and an output side connected to the input side of the power receiving panel 102 and the first output side of the control device 105C via the power supply node 121. The output side of the power receiving board 102 is connected to the input side of the distribution board 106 . The distribution board 106 has an input side of a lower-level meter device 107 and an input side of a branching section 115 connected to its output side. The output side of the lower-level meter device 107 is connected to the input side of a distribution board 108 . The distribution board 108 has a first output side connected to an outlet 1103 or the like in the common area 110, and a first input side of the switching board 109 connected to the first output side. The second output side of the control device 105C is connected to the second input side of the switchboard 109, and the router 1101, outlet 1102, etc. of the common section 110 are connected to the output side. The control device 105C has the distributed generation 104 connected to its control side. Branching section 115 has a first output side connected to the input side of lower-level meter device 111, and a second output side connected to the input side of lower-level meter device 113. The lower-level meter device 111 is connected to a customer facility 112 on the output side. The lower-level meter device 113 has a customer facility 114 connected to its output side.

[0088] 8, in the apartment building facility 100C of this embodiment, a power supply node that supplies power from a distributed power source 104 is provided between the upper meter device 101 and the power receiving panel 102. Note that, as in the first embodiment, two control devices 105C may be provided, one for controlling the solar cell module 1041 and the other for controlling the storage battery 1042.

[0089] The control content and control procedure of the control device 105C are the same as those in FIG. 6 of the first embodiment.

[0090] As described above, this embodiment includes a power receiving panel 102 that receives low-voltage power from the grid 10 in one go, an upper-level meter device 101 that measures the amount of power consumed by the power receiving panel 102, a distribution panel 106 having multiple breakers 1061 for distributing the power received by the power receiving panel 102 to common areas and each dwelling unit in the apartment building, lower-level meter devices (107, 111, 113) that are installed between the multiple breakers of the distribution panel 106 and the loads of each dwelling unit, a distributed power source 104 that has at least a storage battery 1042 and a solar power generation device (solar cell module 1041), and a control device 105C that controls the distributed power source 104 and detects power outages in the grid 10, and a power supply node 121 that supplies power from the distributed power source 104 is installed between the upper-level meter device 101 and the power receiving panel 102.

[0091] According to this embodiment, the same effects as those of the first embodiment can be obtained.

[0092] <Fourth embodiment> Fig. 9 is a diagram showing an example of the configuration of an apartment building facility according to this embodiment. The apartment building shown in Fig. 9 is an example of a house 3 equipped with a solar power generation system and a storage battery. The apartment building facility 100D includes an upper metering device 101, a power receiving panel 102, a sensor 103, a distributed power source 104, a control device 105D, a distribution panel 106, a lower metering device 107, a distribution panel 108, a switching panel 109, a common area 110, a lower metering device 111, a customer facility 112, a lower metering device 113, a customer facility 114, and a branching section 115. The sensor 103 is provided in the distribution panel 106, for example. The apartment building facility 100D is connected to a grid 10 from, for example, an electric power company.

[0093] The upper meter device 101 has an input side connected to a system 10 from a power company, and an output side connected to the input side of a power receiving panel 102 . The output side of the power receiving board 102 is connected to the input side of the distribution board 106 . The distribution board 106 has an output side to which the input side of the lower-level meter device 107, a first output side of the control device 105D, and an input side of the branching section 115 are connected. The output side of the lower-level meter device 107 is connected to the input side of a distribution board 108 . The distribution board 108 has a first output side connected to the outlet 1103 in the common area 110 and a second output side connected to the first input side of the switching board 109 . The second output side of the control device 105D is connected to the second input side of the switchboard 109, and the router 1101, outlet 1102, etc. of the common section 110 are connected to the output side. The control device 105D has the distributed generation 104 connected to its control side. Branching section 115 has a first output side connected to the input side of lower-level meter device 111, and a second output side connected to the input side of lower-level meter device 113. The lower-level meter device 111 is connected to a customer facility 112 on the output side. The lower-level meter device 113 has a customer facility 114 connected to its output side.

[0094] 9, in an apartment building facility 100D of this embodiment, a power supply node that supplies power from a distributed power source 104 is provided between a distribution board 106 and lower-level meter devices (107, 111, 113). Note that, as in the first embodiment, two control devices 105D may be provided, one for controlling a solar cell module 1041 and the other for controlling a storage battery 1042.

[0095] The control contents and control procedures of the control device 105D are the same as those in FIG. 6 of the first embodiment.

[0096] As described above, this embodiment includes a power receiving panel 102 that receives low-voltage power from the grid 10 in one go, an upper meter device 101 that measures the amount of power consumed by the power receiving panel 102, a distribution panel 106 having multiple breakers 1061 for distributing the power received by the power receiving panel 102 to common areas and each dwelling unit in the apartment building, lower meter devices (107, 111, 113) that are installed between the multiple breakers of the distribution panel 106 and the loads of each dwelling unit, a distributed power source 104 that has at least a storage battery 1042 and a solar power generation device (solar cell module 1041), and a control device 105D that controls the distributed power source 104 and detects power outages in the grid 10, and a power supply node that supplies power from the distributed power source 104 is installed between the distribution panel 106 and the lower meter devices (107, 111, 113).

[0097] According to this embodiment, the same effects as those of the first embodiment can be obtained.

[0098] Fifth Embodiment Fig. 10 is a diagram showing an example of the configuration of an apartment building facility according to this embodiment. The apartment building shown in Fig. 10 is an example of a house 3 equipped with a photovoltaic power generation system and a storage battery. The apartment building facility 100E includes an upper meter device 101, a power receiving panel 102, a sensor 103, a distributed power source 104, a control device 105E, a distribution panel 106, a lower meter device 107, a distribution panel 108, a switching panel 109, a common area 110, a lower meter device 111, a customer facility 112, a lower meter device 113, a customer facility 114, and a branching area 115. The apartment building facility 100E is connected to a grid 10 from, for example, an electric power company.

[0099] The upper meter device 101 has an input side connected to a system 10 from a power company, and an output side connected to the input side of a power receiving panel 102 . The output side of the power receiving board 102 is connected to the input side of the distribution board 106 . The distribution board 106 has a first output side connected to the input side of the lower-level meter device 107, and a second output side connected to the first output side of the control device 105E and the input side of the branch section 115 via the power supply node 121. The output side of the lower-level meter device 107 is connected to the input side of a distribution board 108 . The distribution board 108 has a first output side connected to the outlet 1103 in the common area 110 and a second output side connected to the first input side of the switching board 109 . The switching panel 109 has a second input side connected to the second output side of the control device 105E, a first output side connected to the router 1101 and outlet 1102 of the common section 110, etc., and a second output side connected to the output side of the control device 105E and the input side of the branching section 115 via the power supply node 121. The control device 105E has the distributed generation 104 connected to its control side. Branching section 115 has a first output side connected to the input side of lower-level meter device 111, and a second output side connected to the input side of lower-level meter device 113. The lower-level meter device 111 is connected to a customer facility 112 on the output side. The lower-level meter device 113 has a customer facility 114 connected to its output side.

[0100] In the configuration of FIG. 10 , the sensor 103 detects, for example, the current from the storage battery 1042. Therefore, according to this embodiment, the current from the storage battery 1042 is detected without detecting the overall current, so the amount of current detected by the sensor 103 can be reduced. As a result, for example, in a configuration in which the sensor 103 is provided in the power receiving panel 102 when the total number of households is large, even a sensor that does not satisfy the current resistance requirement can be used in this embodiment. In this case, the distribution panel 106 is provided with a breaker for each path, and the sensor 103 is provided on the path that supplies power from the storage battery 1042.

[0101] 10 , in an apartment building facility 100E of this embodiment, power is supplied from a distribution board 106 to a common area 110 via a first path, and to customer facilities (112, 114) via a second path. In addition, in the apartment building facility 100E, a power supply node that supplies power from the distributed power source 104 is provided between the distribution board 106 and the second lower-level meter devices (111, 113). Note that, as in the first embodiment, two control devices 105E may be provided, one for controlling the solar cell module 1041 and the other for controlling the storage battery 1042.

[0102] The control content and control procedure of the control device 105E are the same as those in FIG. 6 of the first embodiment.

[0103] As described above, in this embodiment, the power receiving panel 102 receives low-voltage power from the grid 10 in a lump, the upper meter device 101 measures the amount of power consumed by the power receiving panel 102, the distribution panel 106 having a plurality of breakers 1061 for distributing the power received by the power receiving panel 102 to the common area 110 and each dwelling unit (customer facilities 112, 114) in the apartment building, the lower meter devices (107, 111, 113) provided between the plurality of breakers of the distribution panel 106 and the loads of each dwelling unit, the storage battery 1042 and the photovoltaic power generation system, The power supply system includes a distributed power source 104 having at least a device (solar cell module 1041) and a control device 105E that controls the distributed power source 104 and detects a power outage in the grid 10, and the lower level meter devices include a first lower level meter device 107 for the common area 110 and second lower level meter devices (111, 113) for the dwelling units (consumer facilities 112, 114), and a power supply node 121 that supplies power from the distributed power source 104 is provided between the distribution board 106 and the second lower level meter devices (111, 113).

[0104] According to this embodiment, the same effects as those of the first embodiment can be obtained.

[0105] Sixth Embodiment Fig. 11 is a diagram showing an example of the configuration of an apartment building facility according to this embodiment. The apartment building shown in Fig. 11 is an example of a house 3 equipped with a photovoltaic power generation system and a storage battery. The apartment building facility 100F includes an upper meter device 101, a power receiving panel 102, a sensor 103, a distributed power source 104, a control device 105F, a distribution panel 106, a lower meter device 107, a distribution panel 108, a switching panel 109, a common area 110, a lower meter device 111, a customer facility 112, a lower meter device 113, a customer facility 114, and a branching area 115. The apartment building facility 100F is connected to a grid 10 from, for example, an electric power company.

[0106] The upper meter device 101 has an input side connected to a system 10 from a power company, and an output side connected to the input side of a power receiving panel 102 . The output side of the power receiving board 102 is connected to the input side of the distribution board 106 . The distribution board 106 has a first output side connected to the input side of the lower-level meter device 107, and a second output side connected to the input side of the branching section 115. The output side of the lower-level meter device 107 is connected to the input side of a distribution board 108 . The distribution board 108 has a first output side connected to the outlet 1103 in the common area 110 and a second output side connected to the first input side of the switching board 109 . The switchboard 109 has a second input side connected to the second output side of the control device 105F, and an output side connected to a router 1101, an outlet 1102, etc. of the common section 110. The control device 105F has the distributed generation 104 connected to its control side. The branching section 115 has a first output side connected to the input side of the lower meter device 111, and a second output side connected to the first output side of the control device 105F and, via the power supply node 121, the output side of the control device 105F and the input side of the lower meter device 113. The lower-level meter device 111 is connected to a customer facility 112 on the output side. The lower-level meter device 113 has a customer facility 114 connected to its output side.

[0107] In the configuration of FIG. 11, the sensor 103 detects, for example, the current from the storage battery 1042. Therefore, according to this embodiment, the current from the storage battery 1042 is detected without detecting the overall current, so the amount of current detected by the sensor 103 can be reduced. As a result, for example, in a configuration in which the sensor 103 is provided in the power receiving panel 102 when the total number of households is large, even a sensor that does not satisfy the current resistance requirement can be used in this embodiment. In this case, the distribution panel 106 is provided with a breaker for each path, and the sensor 103 is provided on the path that supplies power from the storage battery 1042.

[0108] 11 , in the apartment building facility 100F of this embodiment, power is supplied from the distribution board 106 to a common area 110 via a first path, and to customer facilities (112, 114) via a second path. In addition, in the apartment building facility 100F, a power supply node 121 that supplies power from the distributed power source 104 is provided between the branching section 115 and the second lower-level metering device 113. Note that, as in the first embodiment, two control devices 105F may be provided, one for controlling the solar cell module 1041 and the other for controlling the storage battery 1042.

[0109] The control contents and control procedures of the control device 105F are the same as those in FIG. 6 of the first embodiment.

[0110] As described above, in this embodiment, the power receiving panel 102 receives low-voltage power from the grid 10 in a lump, the upper meter device 101 measures the amount of power consumed by the power receiving panel 102, the distribution panel 106 having a plurality of breakers 1061 for distributing the power received by the power receiving panel 102 to the common area 110 and each dwelling unit (consumer facilities 112, 114) in the apartment building, the lower meter devices (107, 111, 113) provided between the plurality of breakers of the distribution panel 106 and the loads of each dwelling unit, the storage battery 1042 and the photovoltaic power generation device (solar cell module), The system includes a distributed power source 104 having at least a power module 1041, and a control device 105F that controls the distributed power source 104 and detects a power outage in the grid 10, and the lower metering devices include a first lower metering device 107 for the common area 110 and a second lower metering device 113 for the dwelling unit, and further includes a branching section 115 connected between the distribution board 106 and the second lower metering device 113, and a power supply node 121 that supplies power from the distributed power source 104 is provided between the branching section 115 and the second lower metering device 113.

[0111] According to this embodiment, it is possible to obtain the same effects as in Embodiment 1. Furthermore, according to this embodiment, it is possible to set, among a plurality of customer facilities, customer facilities to which power from the storage battery is supplied during normal times.

[0112] Seventh Embodiment Fig. 12 is a diagram showing an example of the configuration of an apartment building facility according to this embodiment. The apartment building shown in Fig. 12 is an example of a house 3 equipped with a photovoltaic power generation system and a storage battery. The apartment building equipment 100G includes an upper meter device 101, a power receiving panel 102, a sensor 103, a distributed power source 104, a control device 105G, a distribution panel 106, a lower meter device 107, a distribution panel 108, a switching panel 109, a common area 110, a lower meter device 111, a customer facility 112, a lower meter device 113, a customer facility 114, a branch section 116, a branch section 117, and a branch section 118. The apartment building facility 100G is connected to a grid 10 from, for example, an electric power company.

[0113] The upper meter device 101 has an input side connected to a system 10 from a power company, and an output side connected to the input side of a power receiving panel 102 . The output side of the power receiving board 102 is connected to the input side of the distribution board 106 . The distribution board 106 has a first output side connected to the output side of the control device 105G via the power feeding node 121, and a second output side connected to the input side of the branching section 116. The sensor 103 of the power supply node 121 is connected to the input side of the branch 118 at its output. Branching section 118 has a first output side connected to the input side of lower-level meter device 107, and a second output side connected to the input side of branching section 117. The output side of the lower-level meter device 107 is connected to the input side of a distribution board 108 . The distribution board 108 has a first output side connected to the outlet 1103 in the common area 110 and a second output side connected to the first input side of the switching board 109 . The second input side of the switchboard 109 is connected to the second output side of the control device 105G, and the router 1101 and the outlet 1102 of the common section 110 are connected to the output side. The control device 105G has the distributed power sources 104 connected to its control side. The branching unit 116 has an output side connected to the input side of the lower-level meter device 113 . The branching unit 117 has an output side connected to the input side of the lower-level meter device 111 . The lower-level meter device 111 is connected to a customer facility 112 on the output side. The lower-level meter device 113 has a customer facility 114 connected to its output side.

[0114] 12 , in the apartment building equipment 100G of this embodiment, power is supplied from the distribution board 106 to a common area 110 and a customer facility 112 via a first path, and to a customer facility 114 via a second path. The customer facility 112 is, for example, a plurality of customer facilities (residences) on the first floor of an apartment building. The customer facility 114 is, for example, a plurality of customer facilities (residences) on the second floor of an apartment building. In this embodiment, during normal times, for example at night, power from the storage battery 1042 is supplied to the common area 110 and the customer facility 112 which is the residence on the first floor, but is not supplied to the customer facility 114 which is the residence on the second floor. Furthermore, during a power outage, as in the first to sixth embodiments, power is supplied to the router 1101 and outlet 1102 in the common area 110, but is not supplied to the customer facility 112 which is the residence on the first floor or the customer facility 114 which is the residence on the second floor. However, during a power outage, as in the first to sixth embodiments, power is supplied from the router 1101 in the common area 110 to the access point via a LAN cable.

[0115] In the apartment building facility 100G, the distributed power source 104 is connected between the distribution board 106 and the lower metering devices 107 and 111 via a control device 105G, for example. The position at which the distributed power source 104 is connected may be any of the positions in the first to sixth embodiments. As in the first embodiment, two control devices 105G may be provided, one for controlling the solar cell module 1041 and the other for controlling the storage battery 1042.

[0116] The control contents and control procedures of the control device 105G are the same as those in FIG. 6 of the first embodiment.

[0117] According to this embodiment, it is possible to obtain the same effects as in Embodiment 1. Furthermore, according to this embodiment, it is possible to set, among a plurality of customer facilities, customer facilities to which power from the storage battery is supplied during normal times.

[0118] In the configuration of FIG. 12, the sensor 103 detects current flowing to, for example, the common area 110 and the customer facility 112. Therefore, according to this embodiment, the amount of current detected by the sensor 103 can be reduced without detecting the overall current. As a result, for example, in a configuration in which the total number of households is large and the sensor 103 is provided in the power receiving panel 102, even a sensor that does not satisfy the current resistance requirement can be used in this embodiment. In this case, as shown in FIG. 13, the distribution panel 106 is provided with a breaker for each path, and the sensor 103 is provided on the path that supplies power from the storage battery 1042.

[0119] 13 is a diagram illustrating an example of a power supply path from a distribution board 106. In the example of FIG. 13, the distribution board 106 includes, for example, a sensor 103, a breaker 1063, a breaker 1064, a terminal block 1065, and a breaker 1066.

[0120] The breaker 1063 and the breaker 1064 are supplied with power from the grid 10 via the power receiving panel 102 . The breaker 1063 is connected to a lower-level meter device 113 of a system that does not supply the power stored in the storage battery 1042 . A terminal block 1065 is connected to the breaker 1064 via the sensor 103. The system of the breaker 1064 is a system that supplies the power stored in the storage battery 1042. The breaker 1066 connects one end of the lower-level meter device 107 to the switchboard 109. Electric power is supplied to the common section 110 via the switchboard 109. The terminal block 1065 has the other end of the lower meter device 107 connected to the input side, the breaker 1064 via the sensor 103, and the output side of the control device 105 connected to the lower meter device 111 of the system that supplies the electricity stored in the storage battery 1042 on the output side.

[0121] With this configuration, power from the grid 10 or power generated by the solar cell module 1041 is supplied to the customer facility connected to the lower meter device 111 and the customer facility connected to the lower meter device 113. Also, with this configuration, power stored in the storage battery 1042 is supplied to the customer facility connected to the lower meter device 111. Also, with this configuration, power is supplied to the common area 110 during a power outage. Such a configuration may be provided in the apartment building facilities 100 (or 100A, 100B, 100C, 100D, 105E, 100F, 100G) of each of the above-described embodiments.

[0122] The configurations, operations, processes, etc. of the above-described embodiments are merely examples and are not intended to be limiting. The apartment building facility 100 (or 100A, 100B, 100C, 100D, 100E, 100F, or 100G) of each embodiment may include other components.

[0123] In the above example, an example of one solar cell module 1041 and one control device 105 (or 105A, 105B, 105C, 105D, 105E, 105F, 105G) has been described, but the present invention is not limited to this. There may be two or more pairs of solar cell modules and control devices. In this case, for example, in the configuration of FIG. 5, a solar cell module extension panel having a breaker for each control device may be further provided between the control devices and the distribution board 106.

[0124] Note that a program for realizing all or part of the functions of the control device 105 (or 105A, 105B, 105C, 105D, 105E, 105F, or 105G) of the present invention may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be loaded into a computer system and executed to perform all or part of the processing performed by the control device 105 (or 105A, 105B, 105C, 105D, 105E, 105F, or 105G). Note that the term "computer system" as used herein includes hardware such as an OS and peripheral devices. The term "computer system" also includes a WWW system equipped with a homepage providing environment (or display environment). The term "computer-readable recording medium" refers to portable media such as a flexible disk, optical magnetic disk, ROM, or CD-ROM, and storage devices such as a hard disk built into a computer system. Furthermore, the term "computer-readable recording medium" also includes a device that stores a program for a certain period of time, such as volatile memory (RAM) within a computer system that serves as a server or client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line.

[0125] The program may also be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by transmission waves in the transmission medium. Here, the "transmission medium" that transmits the program refers to a medium that has the function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. The program may also be a program that realizes part of the above-mentioned functions. Furthermore, the program may be a so-called differential file (differential program) that can realize the above-mentioned functions in combination with a program already recorded in the computer system.

[0126] The above describes the form for carrying out the present invention using an embodiment, but the present invention is not limited to such an embodiment, and various modifications and substitutions can be made within the scope that does not deviate from the gist of the present invention. [Explanation of symbols]

[0127] 1,1A...power supply system, 2...house, 3...house, 4...electric power company, 5...intermediary company, 6...house, 7...power supply destination, 10...system, 100,100A,100B,100C,100D,100E,100F,100G...apartment building equipment, 101...upper meter device, 102...power receiving panel, 103...sensor, 104...distributed power source, 105,105A,105B,105C,105D,105E,105F,105G...control device, 106...distribution board, 107...lower meter device, 108...distribution board, 109...switching panel, 110...common area, 111...lower meter device, 112...customer facility, 113...lower meter device, 114...customer facility, 115,11 6,117,118...Branch section, 1061...Breaker, 1063...Breaker, 1064...Breaker, 1065...Terminal block, 1066...Breaker, 1101...Router, 1102...Outlet, 1103...Outlet, 1121,1141...Access point, 1122,1142...Load, 20...House, 21...Distributed power source, 22...First utility company, 23...Electric vehicle, 24...Consumer, 25...Owner, 26...Wholesale electricity market, 27...Second utility company, 28...House, 29...First utility company's business establishment, 31...Photovoltaic power generation system, 32...Storage battery, 33...Upper meter device, 34...Common area, 35...Residential area, 36...Lower meter device, 37...Access point

Claims

1. A power receiving panel that receives low-voltage power from the grid in one go, an upper meter device for measuring the amount of power consumed by the power receiving panel; a distribution board having a plurality of breakers for distributing the power received by the power receiving board to common areas and each dwelling unit in the apartment building; a lower-level meter device provided between the plurality of breakers of the distribution board and the loads of each dwelling unit; A distributed power source including at least a storage battery and a solar power generation device; a control device that controls the distributed power sources and detects a power outage in the grid; a switching panel that determines whether the power is being supplied from the grid or the power of the distributed power source supplied via the control device, and switches between the grid power and the power of the distributed power source to supply power to the common section; Equipped with When the control device detects a power outage in the system, the control device supplies the power stored in the storage battery to the common part to the switching board without going through the distribution board. Power supply system.

2. a power supply node that supplies power from the distributed power source is provided between the power receiving panel and the distribution panel; The power supply system according to claim 1 .

3. a power supply node that supplies power from the distributed power source is provided between the grid and the upper level meter device; The power supply system according to claim 1 .

4. a power supply node that supplies power from the distributed power source is provided between the upper level meter device and the power receiving panel; The power supply system according to claim 1 .

5. a power supply node that supplies power from the distributed power source is provided between the distribution board and the lower-level meter device; The power supply system according to claim 1 .

6. The lower level metering device includes a first lower level metering device for the common area and a second lower level metering device for the dwelling unit, a power supply node that supplies power from the distributed power source is provided between the distribution board and the second lower-level meter device; The power supply system according to claim 1 .

7. The lower level metering device includes a first lower level metering device for the common area and a second lower level metering device for the dwelling unit, a branch section connected between the distribution board and the second lower-level meter device; a power supply node that supplies power from the distributed power source is provided between the branch and the second lower-level meter device; The power supply system according to claim 1 .

8. The power receiving panel receives low-voltage power from the grid in one go, The host meter device measures the amount of power consumed by the power receiving panel, A distribution board having a plurality of breakers for distributing the power received by the power receiving board to the common area and each dwelling unit in the apartment building distributes the power received by the power receiving board to the common area and each dwelling unit, A lower-level meter device installed between the plurality of breakers of the distribution board and the load of each dwelling unit measures the amount of power consumed by each dwelling unit, a control device controls a distributed power source including at least a storage battery and a solar power generation device, and detects a power outage in the grid; a switching panel that determines whether the power is supplied from the grid or the distributed power source supplied via the control device, and switches between the grid power and the distributed power source to supply power to the common section; A power supply method, comprising: When the control device detects a power outage in the system, the control device supplies the power stored in the storage battery to the common part to the switching board without going through the distribution board. Power supply method.

9. A program for causing a computer to function as the control device for the power supply system according to any one of claims 1 to 7.

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