Power supply system

Abstract

To provide a power supply system that can supply power from a distributed power source to a load that is used on a daily basis.SOLUTION: A power supply system includes a distributed power source including at least a storage battery and a solar power generation device, a residential unit switching board that detects a power outage and switches the supplied power, and a common section power board that supplies power to the common section load and a second load that is different from the first load of the residential unit, and in the event of a power outage, power from the distributed power source is supplied to the common section load via the common section power board, and then to the second load via the common section power board and residential unit switching board.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a power supply system.

Background Art

[0002] There is an apartment building having a plurality of residential units and a common area. In such an apartment building, power from the power grid is supplied to the common area and the residential units. When the common area is equipped with a distributed power source composed of a solar panel, a storage battery, and a power conditioner, during a power outage, the power of the distributed power source is supplied to the load in the common area via the distribution board installed in the common area, and is supplied to the load in each residential unit via the distribution board and the power supply unit. Note that the load to which power is supplied via the distribution board and the power supply unit is a load having a smaller power consumption than the load to which power from the power grid is supplied (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the technique described in Patent Document 1, the power of the distributed power source cannot be supplied to a load for daily use.

[0005] The present invention has been made in view of the above problems, and an object thereof is to provide a power supply system capable of supplying the power of a distributed power source to a load for daily use.

Means for Solving the Problems

[0006] (1) To achieve the above objective, one aspect of the present invention provides a power supply system comprising: a distributed power source equipped with at least a storage battery and a solar power generation device; a dwelling unit switching panel that detects a power outage and switches the power supplied; and a common area electrical panel that supplies power to a common area load and a second load separate from the first load in the dwelling unit, wherein in the event of a power outage, power from the distributed power source is supplied to the common area load via the common area electrical panel, and power is supplied to the second load via the common area electrical panel and the dwelling unit switching panel. The power supply system further comprises a first power supply unit that supplies power from the power grid to the first and second loads, and a second power supply unit that supplies power from the distributed power source to the second load, wherein the first and second power supply units are provided in the dwelling unit, the dwelling unit switchboard is connected between the first and second power supply units, the first power supply unit is connected between the power grid and the dwelling unit switchboard, the second power supply unit is connected between the common area electrical panel and the dwelling unit switchboard, and the dwelling unit switchboard supplies power from the first power supply unit to the second load during normal operation, and supplies power from the second power supply unit to the second load during a power outage.

[0007] According to the power supply system of this embodiment, since it is equipped with a dwelling unit switching panel that detects power outages and switches the power supplied, it is possible to supply power from distributed power sources to loads used on a daily basis.

[0008] (2) One aspect of the present invention relates to a power supply system ,before The shared electrical panel is for power supply. The aforementioned Common area load and the second power supply unit The power is supplied to the distributed power source, and in the event of a power outage, the power from the distributed power source is supplied to the second load via the common area power panel, the second power supply unit, and the dwelling unit switching panel.

[0009] According to the power supply system of this embodiment, power can be supplied to the second load via the first power supply unit when there is no power outage (normal operation), and power can be supplied to the second load via the second power supply unit and the dwelling unit switching panel when there is a power outage.

[0010] (3) In one aspect of the present invention, the dwelling unit may further include a limiter between the common area electrical panel and the second power supply unit that limits the amount of power consumed.

[0011] According to the power supply system of this embodiment, it is possible to limit the amount of electricity used in the living area during a power outage.

[0012] (4) In one aspect of the present invention, the dwelling unit further comprises a display unit that displays information relating to the power stored in the storage battery, wherein the display unit may be at least one of the remaining capacity of the storage battery or the real-time amount of power consumed by the second load, including other dwelling units, during a power outage.

[0013] According to the power supply system of this embodiment, consumers can obtain information about the electricity stored in a battery that can be used in their living area during a power outage.

[0014] (5) In one aspect of the present invention, the dwelling unit may comprise a plurality of residences, and each of the plurality of residences may be provided with a dwelling unit switching panel.

[0015] (6) In one aspect of the present invention, the first load may be a load that is not used during a power outage, and the second load may be a load that can be used during a power outage.

[0016] (7) In one aspect of the present invention, if the power generation capacity or storage capacity of the distributed power source is sufficient to supply the amount of electricity consumed in the dwelling unit for a predetermined period of time, the first load in the dwelling unit may be connected to the second power supply unit.

[0017] The allocation of the first and second loads within a dwelling unit is a design decision made based on the amount of electricity that the distributed power supply can provide during a power outage. For example, only a portion of the loads with low power consumption can be designated as the second load. Conversely, all loads in a dwelling unit can also be designated as the second load. This ensures that all loads within the dwelling unit can be supplied with power during a power outage. [Effects of the Invention]

[0018] According to the present invention, power from distributed power sources can be supplied to loads used on a daily basis. [Brief explanation of the drawing]

[0019] [Figure 1]It is a diagram showing a schematic configuration example of a power supply system for an apartment house equipped with a photovoltaic power generation system and a storage battery according to an embodiment. [Figure 2] It is a diagram showing a configuration example of a power supply system according to an embodiment. [Figure 3] It is a diagram for explaining an example of the switching state of a household switchboard in normal times according to an embodiment. [Figure 4] It is a diagram for explaining an example of the switching state of a household switchboard during a power outage according to an embodiment. [Figure 5] It is a flowchart of a processing procedure of a power supply system according to an embodiment. [Figure 6] It is a diagram showing a configuration example of a first modification of a power supply system according to an embodiment. [Figure 7] It is a diagram showing a configuration example of a second modification of a power supply system according to an embodiment.

Mode for Carrying Out the Invention

[0020] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings used in the following description, the scales of each member are appropriately changed in order to make each member recognizable in size. In all the drawings for explaining the embodiments, those having the same function are denoted by the same reference numerals, and repeated explanations are omitted. In addition, “based on XX” as used in the present application means “based on at least XX”, and includes cases where it is based on another element in addition to XX. Also, “based on XX” is not limited to the case where XX is directly used, and includes cases where it is based on something obtained by performing calculations or processing on XX. “XX” is an arbitrary element (for example, arbitrary information).

[0021] (Example of Overall Schematic Configuration) Figure 1 is a diagram illustrating a schematic configuration example of a power supply system for an apartment building equipped with a solar power generation system and a storage battery according to this embodiment. As shown in Figure 1, the apartment building 3 is equipped with a solar power generation system 31, a storage battery 32, and a higher-level meter device 33. The apartment building 3 also includes a common area 34 and residential areas 35. The common area 34 is equipped with, for example, a switching panel 341 and an outlet 342. The residential area 35 is equipped with, for example, 6 units. Each unit in the residential area 35 is equipped with a lower-level meter device 351, a dwelling unit switching panel 352, and an outlet 353. Note that the example in Figure 1 is a schematic configuration example and is not limited thereto. The apartment building 3 is equipped with, for example, a power conditioner and a circuit breaker. Also, the number of units in the apartment building is not limited to 6, but can be 2 or more. Thus, in the power supply system 1 of this embodiment, each unit in the apartment building is equipped with a dwelling unit switching panel 352.

[0022] (Example of a power supply system) Figure 2 shows an example configuration of a power supply system according to this embodiment. As shown in Figure 2, the power supply system 1 includes a multi-unit residential building facility 100. The multi-unit residential building facility 100 is connected to, for example, a power grid 10 from a power company. The power grid 10 is a low-voltage bulk power supply.

[0023] The apartment building facilities 100 include, for example, a higher-level metering device 101, a power receiving panel 102, a distribution panel 103, a common area 105, and a residential area 120. The distribution board 103 is equipped with a circuit breaker 104.

[0024] The common area 105 includes, for example, a common area metering device 106, a common area switching panel 107, a distributed power supply 108, a common area electrical panel 112, and a common area load 113. The distributed power source 108 includes, for example, a control device 109, a solar cell module 110, and a storage battery 111.

[0025] The residential area 120 includes consumer facilities 130 and consumer facilities 140. Note that in the configuration shown in Figure 2, two of the multiple residences are shown as an example. The customer facility 130 includes, for example, a lower metering device 131, a first power supply unit 132, a first load 133, a dwelling unit switching panel 134, a second power supply unit 135, and a second load 136. The customer facility 140 includes, for example, a lower metering device 141, a first power supply unit 142, a first load 143, a dwelling unit switching panel 144, a second power supply unit 145, and a second load 146.

[0026] The upper-level metering device 101 has the power grid 10 from the power company connected to its input side, and the input side of the power receiving panel 102 connected to its output side. The power receiving panel 102 has the input side of the distribution panel 103 connected to its output side. The distribution board 103 has the following connections on its output side: the input side of the common area metering device 106 of the common area 105, the input side of the lower metering device 131 of the customer facility 130, the distributed power supply 108, and the input side of the lower metering device 141 of the customer facility 140.

[0027] The connection relationships of the common area 105 will be explained. The common area metering device 106 has the input side of the common area switching panel 107 connected to its output side. The shared area switchboard 107 is connected to the distributed power supply 108 and the input side of the shared area electrical panel 112. The common area power distribution panel 112 has the common area load 113 connected to its first output side, and the second power supply unit 135 of the customer facility 130 and the second power supply unit 145 of the customer facility 140 connected to its second output side.

[0028] The connection relationships of the living area 120 will be explained. The lower meter device 131 has the input side of the first power supply unit 132 connected to its output side. The first power supply unit 132 has the first load 133 connected to its first output side, and the first input terminal of the dwelling unit switching panel 134 connected to its second output side. The dwelling unit switching panel 134 has the output side of the second power supply unit 135 connected to the second input terminal, and the second load 136 connected to the output terminal. The lower meter device 141 has the input side of the first power supply unit 142 connected to its output side. The first power supply unit 142 has the first load 143 connected to its first output side, and the first input terminal of the dwelling unit switching panel 144 connected to its second output side. The dwelling unit switching panel 144 has the output side of the second power supply unit 145 connected to the second input terminal, and the second load 146 connected to the output terminal.

[0029] Next, we will explain examples of the functions of each component. The upper-level metering device 101 is a meter for measuring electricity consumption contracted with the power company, and is a bulk power receiving meter. The upper-level metering device 101 measures the amount of electricity consumed by the common area 105 and the amount of electricity consumed by multiple customer facilities (130, 140). The upper-level metering device 101 may be, for example, a smart meter.

[0030] The power receiving panel 102 is connected to the higher-level metering device 101 and receives power from the grid 10 through low-voltage bulk power reception. The power receiving panel 102 supplies the received power to the common areas 105 and residential areas 120 via the distribution panel 103.

[0031] The distribution board 103 supplies power from the receiving board 102 to the common area 105, the customer facility 130, and the customer facility 140 during normal times (when there is no power outage). The distribution board 103 may also be configured such that, for example, during the day, power generated by the solar cell modules 110 is supplied to the common area 105 and the customer facility 140, and at night, power obtained from the grid 10 is supplied.

[0032] Under normal conditions, for example, the customer facility 130 receives power from the grid or distributed power source 108 to the first load 133 and the second load 136 via the first power supply unit 132. During a power outage, for example, the customer facility 130 receives power from the distributed power source 108 to the first load 133 and the second load 136 via the second power supply unit 136. In Figure 2, symbols g1 and g2 indicate the power output paths under normal conditions. Symbol g3 indicates the output path during a power outage.

[0033] Next, we will explain the functional examples of each component of the common area 105. The common area metering device 106 measures the amount of electricity consumed by the common area 105. The common area metering device 106 may, for example, be a smart meter.

[0034] The common area switchboard 107 supplies power generated by the solar cell modules 110 or power obtained from the grid 10 to the common area load 113 via the common area distribution board 112 during normal operation (when there is no power outage). When the common area switchboard 107 detects a power outage by detecting the flow of current, it supplies power generated by the solar cell modules 110 or power stored in the battery 111 to the common area load 113, the second power supply unit 135, and the second power supply unit 145 via the common area distribution board 112.

[0035] The control device 109 is, for example, a power conditioner. The control device 109 controls the solar cell modules 110. The control device 109 converts the DC electricity generated by the solar cell modules 110 into AC electricity that can be used in homes. The control device 109 may also control the supply of power generated by the solar cell modules 110 to customer facilities (130, 140) via the common area switching panel 107 and the distribution board 103. The control device 109 converts the voltage of the surplus DC electricity generated by the solar cell modules 110 into a voltage that can be charged to the battery 111, and stores the converted power in the battery 111. When the amount of power generated by the solar cell modules 110 is low, the control device 109 supplies the power stored in the battery 111 to the common area 105 and customer facilities (130, 140). The control device 109 may also control the sale of surplus power to the grid 10.

[0036] The solar cell module 110 generates electricity from sunlight. The solar cell module 110 is installed, for example, on the roof of an apartment building 3.

[0037] The storage battery 111 is a secondary battery, such as a lithium-ion battery.

[0038] The common area power panel 112 distributes the electricity generated by the solar cell module 110 and stored in the battery 111 during a power outage to the common area load 113, the second power supply unit 135, and the second power supply unit 145.

[0039] Common area loads 113 include, for example, electrical outlets, lighting, a shared entrance intercom, an electrical key control device, a telephone security box, etc. Note that common area loads that do not go through a switching panel may also be installed (not shown).

[0040] Next, we will explain the functional examples of each component of the residential area 120. Since the functions of each component of the consumer facilities 130 and 140 are similar, we will use the components of consumer facilities 130 as an example. The lower-level metering device 131 measures the amount of electricity consumed by the customer facility 130. The lower-level metering device 131 may be, for example, a smart meter.

[0041] The first power supply unit 132 supplies power to the first load 133 and the dwelling unit switching panel 134. The power supplied to the first power supply unit 132 is power obtained from grid 10.

[0042] The first load 133 is, for example, a load connected to the first outlet. During a power outage, the first load 133 is not supplied with power from the grid 10 or the distributed power source 108. For this reason, the first load 133 is, for example, an unnecessary load during a power outage.

[0043] The dwelling unit switching panel 134 supplies power from the first power supply unit 132 to the second load during normal operation, and switches to supplying power from the second power supply unit 135 to the second load 136 during a power outage. The dwelling unit switching panel 134 detects power outages based on, for example, the voltage output by the first power supply units (132, 142). Power outage detection may also be performed by, for example, a sensor (not shown). The switching operation of the dwelling unit switching panel 134 will be described later with reference to Figures 3 and 4.

[0044] The second power supply unit 135 supplies power from the distributed power supply 108 to the dwelling unit switching panel 134.

[0045] The second load 136 is, for example, a load connected to a second outlet. The second load 136 is a load connected to an outlet that receives power even during a power outage. Examples of equipment that is expected to receive power even during a power outage include water heaters and refrigerators.

[0046] Note that the configuration example in Figure 2 is just one example and is not limited to this. For example, each consumer facility (130, 140) in the residential area 120 may be equipped with, for example, a communication access point. In this case, in the event of a power outage, each unit in the residential area 120 may be supplied with power for wireless communication from the storage battery 111 to the access point, for example, via a LAN (Local Area Network) cable.

[0047] (Operation of the dwelling unit's switching panel) Next, the operation of the dwelling unit switch panel will be explained using Figures 3 to 5. Note that dwelling unit switch panel 134 and dwelling unit switch panel 144 are the same, so the explanation will use dwelling unit switch panel 134 as an example.

[0048] Figure 3 is a diagram illustrating an example of the switching state of the dwelling unit switching panel under normal conditions according to this embodiment. As shown in Figure 3, under normal conditions, the dwelling unit switching panel 134 has its first input terminal 134a connected to its output terminal 134c. As a result, under normal conditions, the power supplied from the first power supply unit 132 (for example, grid power) is supplied to the first load 133 and the second load 136 via the dwelling unit switching panel 134.

[0049] Figure 4 is a diagram illustrating an example of the switching state of the dwelling unit switching panel during a power outage according to this embodiment. As shown in Figure 4, during a power outage, the dwelling unit switching panel 134 has its second input terminal 134b connected to the output terminal 134c. As a result, during a power outage, the power supplied from the second power supply unit 135, that is, the power stored in the battery 111 of the distributed power supply 108, is supplied to the second load 136 via the dwelling unit switching panel 134.

[0050] Figure 5 is a flowchart of the processing procedure of the power supply system according to this embodiment. (Step S1) The power supply system 1 detects whether grid power is being supplied, that is, whether there is a power outage. If there is no power outage (Step S1; NO), the power supply system 1 proceeds to step S2. If there is a power outage (Step S1; YES), the power supply system 1 proceeds to step S3.

[0051] (Step S2) The first power supply unit 132 supplies power from grid 10 to the first load as it is normal operation. The dwelling unit switching panel 134 switches to supply power from grid 10 output by the first power supply unit 132 to the second load.

[0052] (Step S3) The dwelling unit switching panel 134 switches to supplying power from the distributed power source 108 output by the second power supply unit 135 to the second load, since there is a power outage.

[0053] As described above, the power supply system 1 of this embodiment includes, at least, a storage battery 111 and a solar power generation device (solar cell module 110, control device 109) as the distributed power source 108. Furthermore, the power supply system 1 has a dwelling unit switching panel 134 that detects a power outage and switches the power supplied, and a common area electrical panel 112 that supplies grid power to the common area load 113 and the first loads (133, 143) and second loads (136, 146) of the residential area 120. In the event of a power outage, the power supply system 1 is configured so that power from the distributed power source 108 is supplied to the common area load 113 via the common area electrical panel 112, and to the second load 136 via the common area electrical panel 112 and the dwelling unit switching panel 134.

[0054] As a result, according to this embodiment, under normal circumstances when there is no power outage, grid power can be supplied to the second load (136, 146) via the first power supply unit (132, 142), and in the event of a power outage, power from the distributed power source 108 can be supplied to the second load (136, 146) via the second power supply unit (135, 145).

[0055] (modified version) Figure 6 shows a configuration example of a first modified example of the power supply system according to this embodiment. As shown in Figure 6, the power supply system 1A includes the apartment building equipment 100A. The apartment building facility 100A includes, for example, a higher-level metering device 101, a power receiving board 102, a distribution board 103, a common area 105, and a residential area 120A. Each consumer facility (130A, 140A) of the apartment building facility 100A is equipped with limiters (137, 147). In Figure 6, symbols g11 and g12 indicate the power output path during normal operation. Symbol g13 indicates the output path during a power outage.

[0056] The output side of the second power supply unit 135 is connected to the second input terminal of the dwelling unit switching panel 134 via a limiter 137. The output side of the second power supply unit 145 is connected to the second input terminal of the dwelling unit switching panel 144 via a limiter 147.

[0057] Limiter 137 (or 147) is a device that can limit power consumption, such as a circuit breaker.

[0058] In the first modified version, limiters (137, 147) are used to restrict the amount of electricity used from the distributed power sources 108 at each customer facility (130A, 140A) during a power outage. This prevents, for example, a specific customer from consuming electricity by using a microwave oven or similar device during a power outage, thereby reducing unfairness among customers.

[0059] The limiters (137, 147) may be connected between the common area power panel 112 and the second power supply unit (135, 145). Furthermore, the control device 109 may be configured to limit the power supplied to the entire customer facility based on the capacity and performance of the battery 111.

[0060] Figure 7 shows a configuration example of a second modified example of the power supply system according to this embodiment. As shown in Figure 7, the power supply system 1B includes the apartment building equipment 100B. The apartment complex equipment 100B includes, for example, a higher-level metering device 101, a power receiving panel 102, a distribution panel 103, a common area 105B, and a residential area 120B. Each of the customer facilities (130B, 140B) of the apartment complex equipment 100B is equipped with display units (138, 148). In Figure 7, symbols g21 and g22 indicate the power output path during normal operation. Symbol g23 indicates the output path during a power outage.

[0061] In this configuration, the control device 109B of the distributed power supply 108B provided in the common area 105B acquires information such as the amount of electricity stored in the battery 111 or the remaining amount of electricity (information regarding the stored electricity) using a well-known method. The control device 109B outputs the acquired information regarding the stored electricity to the display units (138, 148). The display units (138, 148) display information such as the amount of electricity currently charged or the remaining amount of electricity. The information displayed may include, for example, the remaining charge of the battery 111, or the real-time amount of electricity consumed by the second load (135, 145), including other dwelling units, during a power outage. The display units (138, 148) may also be lamps, for example. In this case, the lamps may be illuminated to notify the user when the remaining charge of the battery 111 falls below a predetermined capacity.

[0062] As a result, according to the second modification, consumers using electricity at consumer facilities (130B, 140B) during a power outage can determine the amount of electricity remaining in the battery 111. Consumers can then choose which electrical appliances to use, for example, by using a water heater when there is a lot of electricity remaining, or by charging their mobile phones when there is little electricity remaining.

[0063] (Comparison with conventional technology) In contrast, the technology described in conventional document 1 supplied power to the load only during power outages, and neither grid power nor power from distributed sources was supplied during normal operation. In contrast, according to this embodiment, under normal circumstances, power is supplied to the second load (136, 146) via the first power supply unit (132, 142), and in the event of a power outage, power is supplied to the second load (136, 146) via the second power supply unit (135, 145). Therefore, according to this embodiment, for example, lights connected to outlets in the second load (136, 146), door locks, and mobile phone chargers can be used within the customer facility (130, 140). According to this embodiment, for example, if such everyday items are connected to the second load (136, 146), they can be used even during a power outage.

[0064] Furthermore, in cases where shared grid power extends into individual dwelling units, emergency outlets and other wiring are not permitted within that grid power supply in Japan. Therefore, the configuration of the technology described in conventional document 1 could only achieve the supply of power from distributed power sources to each household's load during a power outage. In contrast, in this embodiment, each unit is equipped with a dwelling unit switching panel (134, 144), so that power can be supplied to the load even when there is no power outage.

[0065] Even if the technology described in Patent Document 1 were to be used to supply power to a load that is only supplied with power during a power outage, during normal operation, the power supply to the load would be fixed to go through a shared meter, meaning that the electricity under the shared meter would be used during normal operation. Therefore, if the technology described in Patent Document 1 were to be used to supply power to a load that is only supplied with power during a power outage, during normal operation, the amount of electricity used by the residents would be added to the shared meter. In contrast, in the above-described embodiment and each modified example, the normal power consumption of each household is measured by the lower metering device (131, 141) in the dwelling unit, with power supplied to both the first load (133, 143) and the second load (136, 146) via the first power supply unit (132, 142). In the event of a power outage, power is supplied only to the second load (136, 146) via the second power supply unit (135, 145). This power comes from the distributed power source 108, and is supplied in the following order from the distributed power source (108, 108B): common area switchboard 107, common area electrical panel 112, second power supply unit (135, 145), dwelling unit switchboard (134, 144), and second load (136, 146). Therefore, in the above-described embodiments and their respective modifications, the power to each household during a power outage does not pass through either the common area meter device 106 or the lower-level meter devices (131, 141) in the individual dwelling units. For this reason, in the above-described embodiments and their respective modifications, the amount of power consumed by each household during a power outage is not measured.

[0066] Furthermore, in the embodiments and variations described above, by supplying power to the second load (136, 146) and not supplying power to the first load (133, 143) during a power outage, the limited distributed power sources (108, 108B) can be used effectively.

[0067] Furthermore, if the amount of power generated by the solar cell module 110 and the amount of power stored in the storage battery 111 are sufficient to cover the power consumption of each household, then in the embodiments and modifications described above, all loads may be second loads (136, 147). In this case, there is no need to separate the first load and the second load in the embodiments and modifications described above, so for example, all household loads may be connected below the household unit switching panel (134, 144). This ensures that power is supplied to the loads via the first power supply unit (132, 142) during normal operation, and power is supplied to the loads via the second power supply unit during a power outage.

[0068] In the example described above, each residential unit is equipped with a unit-specific switch and a second power supply panel, but this is not the only example. It is sufficient for one or more of the multiple residences to be equipped with a unit-specific switch and a second power supply panel. For example, the optional charges for electricity may differ for each room. In this case, the apartment building 3 may have residences that receive power during a power outage and residences that do not (for example, the first floor may receive power during a power outage, while the second floor may not). Alternatively, even if all residences are equipped with a unit-specific switch and a second power supply panel, the management company or its employees may switch the functions of the unit-specific switch and second power supply panel on and off according to the contract.

[0069] Furthermore, a program to implement all or part of the functions of the control device 109 in this invention may be recorded on a computer-readable recording medium, and all or part of the processing performed by the control device 109 may be performed by loading the program recorded on this recording medium into a computer system and executing it. Herein, "computer system" includes hardware such as an OS and peripheral devices. Furthermore, "computer system" also includes a WWW system equipped with a homepage provisioning environment (or display environment). Furthermore, "computer-readable recording medium" refers to portable media such as flexible disks, magneto-optical disks, ROMs, CD-ROMs, and storage devices such as hard disks built into a computer system. Moreover, "computer-readable recording medium" also includes volatile memory (RAM) inside a computer system that acts 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, which holds the program for a certain period of time.

[0070] Furthermore, the above program may be transmitted from a computer system that stores the program in a memory device or the like to another computer system via a transmission medium or by transmission waves within the transmission medium. Here, the "transmission medium" for transmitting 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. In addition, the above program may be for the purpose of realizing a part of the functions described above. Furthermore, it may be a so-called differential file (differential program) that can realize the above functions in combination with a program already recorded in the computer system.

[0071] Although embodiments for carrying out the present invention have been described above using examples, the present invention is not limited in any way to these embodiments, and various modifications and substitutions can be made without departing from the spirit of the present invention. [Explanation of Symbols]

[0072] 1,1A,1B…Power supply system, 3…Apartment building, 100,100A,100B…Apartment building equipment, 33,101…Higher-level metering equipment, 102…Power receiving board, 103…Distribution board, 34,105,105B…Common areas, 35,120…Residential areas, 104…Circuit breaker, 106…Common area metering equipment, 107…Common area switching panel, 108,108B…Distributed power supply, 109,109B…Control Equipment, 110...Solar cell module, 111...Storage battery, 112...Common area electrical panel, 113...Common area load, 130, 130A, 130B, 140, 140A, 140B...Customer facilities, 131, 141...Lower metering equipment, 132, 142...First power supply unit, 133, 143...First load, 134, 144...Residential unit switching panel, 135, 145...Second power supply unit, 136, 146...Second load

Claims

1. A distributed power source that includes at least a storage battery and a solar power generation device, A dwelling unit switch panel that detects power outages and switches the power supply, It includes a common area electrical panel that supplies power to the common area load and to a second load separate from the first load in the residential unit, A power supply system in which, in the event of a power outage, power from the distributed power source is supplied to the common area load via the common area distribution board, and power is supplied to the second load via the common area distribution board and the dwelling unit switching board, A first power supply unit that supplies power from the power grid to the first load and the second load, The system further comprises a second power supply unit that supplies power from the distributed power source to the second load, The first power supply unit and the second power supply unit are provided in the dwelling unit, The aforementioned dwelling unit switching panel is connected between the first power supply unit and the second power supply unit, The first power supply unit is connected between the power grid and the dwelling unit switching panel. The second power supply unit is connected between the common area electrical panel and the dwelling unit switching panel. The aforementioned dwelling unit switching panel is Under normal conditions, the power supplied from the first power supply unit is supplied to the second load. In the event of a power outage, the power supplied from the second power supply unit is supplied to the second load. Power supply system.

2. The aforementioned shared section electrical panel supplies power to the shared section load and the second power supply section. During a power outage, the power from the distributed power source is supplied to the second load via the common area distribution board, the second power supply unit, and the dwelling unit switching panel. The power supply system according to claim 1.

3. The dwelling unit further includes a limiter between the common area electrical panel and the second power supply unit, which limits the amount of power consumed. The power supply system according to claim 2.

4. The dwelling unit further includes a display unit that displays information regarding the electricity stored in the battery, The information presented is at least one of the following: the remaining charge of the storage battery, or the real-time amount of electricity consumed by the second load, including other dwelling units, during a power outage. A power supply system according to any one of claims 1 to 3.

5. The aforementioned dwelling unit comprises multiple residences, Each of the aforementioned multiple residences is equipped with the aforementioned dwelling unit switching panel. A power supply system according to any one of claims 1 to 3.

6. The first load is a load that is not used during a power outage, and the second load is a load that can be used during a power outage. A power supply system according to any one of claims 1 to 3.

7. If the power generation capacity or storage capacity of the distributed power source is sufficient to supply the amount of electricity consumed in the dwelling unit for a predetermined period, the first load in the dwelling unit is connected to the second power supply unit. The power supply system according to claim 2 or claim 3.

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