Power network system

Abstract

To enable respective buildings utilize electric energy fairly in the case of power outage.SOLUTION: A power network system comprises: a plurality of electrical facilities that are provided in a plurality of buildings in a region, respectively, receive power supply from a commercial system power supply via transmission lines, and can mutually exchange power through privately owned lines throughout the region; and a shared power storage facility that is provided in an institution in the region and receives power supply from the privately owned lines to store power. Each electrical facility includes: a private power generation device; a distributor capable of distributing private power generation power to the inside of the electrical facility and the transmission lines; a transferred electric energy meter to measure transferred electric energy; a received electric energy meter to measure received electric energy; and an individual power management device that acquires a measured value of the received electric energy meter at the time of power outage as outage start time received electric energy, compares a difference obtained by subtracting the outage start time received electric energy from a measured value of the received electric energy meter after that with a predetermined threshold, and cuts off the distributor from the privately owned lines when the difference exceeds the predetermined threshold.SELECTED DRAWING: Figure 1

Description

Technical Field

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

Background Art

[0002] Patent Document 1 discloses a technique related to power sharing between a plurality of houses built in a residential block. The power used in this residential block is purchased in a lump sum from an electric power company and supplied to each house. In addition, each house is equipped with a solar power generation unit, a fuel cell, and a storage battery. When the power generated by the solar power generation unit and the fuel cell is surplus, the surplus power is stored in the storage battery, shared with other houses, or sold to the electric power company.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, when power is shared between houses during a power outage, unfairness may occur. Specifically, in a house that has tried to reduce energy consumption before a power outage, a large amount of power is stored in the storage battery, but in a house that has wasted power before a power outage, the amount of power stored in the storage battery is small. In such a case, as a result of the latter house consuming all the power in the storage battery during a power outage, if power is shared from the storage battery of the former house to the latter house, the amount of power that can be consumed in the former house will decrease.

[0005] Therefore, the present invention has been made in view of the above circumstances, and an object thereof is to enable each building to use power fairly during a power outage.

Means for Solving the Problems

[0006] The invention described in claim 1 is a power network system 1 constructed in a local area, comprising: a plurality of electrical facilities 20 each installed in a plurality of buildings 2 constructed in the area, which receive power from the commercial grid power supply through transmission lines 8 and can exchange power with each other through private lines 10 laid out in the area; and a shared energy storage facility 50 installed in a facility 3 constructed in the area, which receives power from the private lines 10 and stores energy, wherein each of the electrical facilities 20 is a private power generation device 27 that generates electricity from natural energy. The system includes a distribution unit 31 capable of distributing the self-generated power to the electrical equipment 20 and the transmission line 8, and capable of detecting power outages in the transmission line 8; a power exchange meter 39 that measures the amount of power exchanged output from the distribution unit 31 to the private line 10; a power receiving meter 41 that measures the amount of power received from the private line 10 to the distribution unit 31; and when the distribution unit 31 detects a power outage in the transmission line 8, the measured value of the power receiving meter 41 at that time is acquired as the amount of power received at the start of the power outage, and the measured value of the power receiving meter 41 thereafter is used to determine the amount of power received at the start of the power outage. covered The system includes an individual power management device 43 that compares the difference after subtracting the amount of power exchanged with a predetermined threshold, and shuts off the distribution unit 31 from the private line 10 when the difference exceeds the predetermined threshold, wherein the individual power management device 43 determines the predetermined threshold based on the amount of power exchanged over a predetermined period measured by the power exchange meter 39 before the power distribution unit 31 detects a power outage in the transmission line 8.

[0007] According to the invention described in claim 1, the amount of electricity that each electrical appliance in building 2 can receive after the start of a power outage is limited to a predetermined threshold, and the predetermined threshold is determined based on the amount of electricity received before the power outage. Therefore, in the event of a power outage, the electrical equipment in each building 2 can fairly utilize the remaining charge in the shared battery 53 of the shared energy storage facility 50. Furthermore, the fact that the amount of electricity that each building 2's electrical equipment can receive after a power outage is limited based on the amount of electricity received before the outage provides an incentive for residents of each building 2 to share electricity. In other words, residents of each building 2 will live in a way that increases the amount of electricity they share before a power outage so that they can receive more electricity during a power outage.

[0008] The invention described in claim 2 is a power network system 1 as described in claim 1, further comprising a central management device 90, wherein each of the individual power management devices 43 transmits to the central management device 90 the amount of shared power measured by the shared power meter before the power distribution device 31 detects a power outage in the transmission line 8, and the central management device 90 ranks the accounts to which each of the individual power management devices 43 has logged into the central management device 90 with respect to the amount of shared power transmitted by each of the individual power management devices 43.

[0009] The invention described in claim 3 is a power network system 1 as described in claim 2, characterized in that the central management device 90 transmits to each of the individual power management devices 43 the ranking assigned to the account that logged into the central management device 90, and the individual power management devices 43 display the received ranking.

[0010] According to the inventions described in claims 2 and 3, the account of each individual power management device 43 is ranked in terms of the amount of electricity exchanged, and the ranking is displayed on the individual power management device 43, thereby providing an incentive for the residents of each building 2 to exchange electricity.

[0011] The invention described in claim 4 is a power network system 1 according to claim 2 or 3, characterized in that the central management device 90 classifies the accounts based on the private information associated with the accounts using common private information, and then ranks the accounts belonging to the common category based on the classification with respect to the amount of power transmitted by each of the individual power management devices 43.

[0012] The invention described in claim 5 is a power network system 1 as described in claim 4, characterized in that the central management device 90 transmits the classification rank assigned to the account belonging to a common class according to the classification to the individual power management device 43, and the individual power management device 43 displays the received classification rank.

[0013] According to the inventions described in claims 4 and 5, accounts belonging to a common category are ranked in terms of the amount of electricity exchanged, and their category ranking is displayed on the individual power management device 43, thereby providing an incentive for residents of each building 2 to exchange electricity. Since the ranked accounts share common private information, a competitive spirit is stimulated among the residents who have accounts.

[0014] The invention described in claim 6 is a power network system 1 according to any one of claims 2 to 5, characterized in that each of the individual power management devices 43 calculates a self-consumption rate based on the amount of shared power measured by the shared power meter before the power distribution device 31 detects a power outage in the transmission line 8, transmits the self-consumption rate to the central management device 90, and the central management device 90 ranks the accounts that each of the individual power management devices 43 has logged into the central management device 90 with respect to the self-consumption rates transmitted by each of the individual power management devices 43.

[0015] According to the invention described in claim 6, since the account of each individual power management device 43 is ranked in terms of self-consumption rate, the residents of each building 2 will strive to improve their self-consumption rate. [Effects of the Invention]

[0016] According to the present invention, electrical equipment in each building can fairly utilize the remaining charge of the shared battery in the shared energy storage facility during a power outage. [Brief explanation of the drawing]

[0017] [Figure 1]FIG. 1 is a diagram showing a configuration example of a power network system. [Figure 2] FIG. 2 is a block diagram of electrical equipment provided in a building. [Figure 3] FIG. 3 is a block diagram of shared power storage equipment provided in a facility. [Figure 4] FIG. 4 is an explanatory diagram of power distribution by a distribution board of electrical equipment. [Figure 5] FIG. 5 is an explanatory diagram of power distribution by a distribution board of electrical equipment. [Figure 6] FIG. 6 is an explanatory diagram of power distribution by a distribution board of electrical equipment. [Figure 7] FIG. 7 is an explanatory diagram of power distribution by a distribution board of electrical equipment. [Figure 8] FIG. 8 is an explanatory diagram of power distribution by a distribution board of electrical equipment. [Figure 9] FIG. 9 is an explanatory diagram of power distribution by a distribution board of electrical equipment. [Figure 10] FIG. 10 is an explanatory diagram of power distribution by a distribution board of electrical equipment. [Figure 11] FIG. 11 is an explanatory diagram of power distribution by a distribution board of electrical equipment. [Figure 12] FIG. 12 is an explanatory diagram of power distribution by a distribution board of electrical equipment. [Figure 13] FIG. 13 is an explanatory diagram of power distribution by a distribution board of electrical equipment. [Figure 14] FIG. 14 is an explanatory diagram of power distribution by a distribution board of electrical equipment. [Figure 15] FIG. 15 is an explanatory diagram of power distribution by a distribution board of electrical equipment. [Figure 16] FIG. 16 is an explanatory diagram of power distribution by a distribution board of electrical equipment. [Figure 17] FIG. 17 is an explanatory diagram of power distribution by a distribution board of electrical equipment.

MODE FOR CARRYING OUT THE INVENTION

[0018] Embodiments of the present invention will be described below with reference to the drawings. However, the embodiments described below are subject to various technically preferred limitations for carrying out the present invention, but the technical scope of the present invention is not limited to the following embodiments and illustrated examples.

[0019] <Smart cities and power network systems> Figure 1 shows an example of the configuration of power network system 1. Multiple residents live in a local area, and these residents constitute a local community. Multiple buildings 2 and facilities 3 belonging to the community are constructed in the local area, and streetlights 4 belonging to the community are installed on the roads, sidewalks, gardens, or parks in that area. The buildings 2, facilities 3 and streetlights 4 in that area constitute a so-called local smart city.

[0020] In the local area, commercial power lines 8 are laid out. Power lines 8 are either buried underground or suspended in the air, supported by utility poles. Power lines 8 supply electricity from the commercial grid to each building 2 and facility 3. In order to utilize electricity other than the commercial power supplied by power lines 8 within the community, a local power network system 1 belonging to the community is built in the local area and is also adopted in the smart city. Power network system 1 is used to share electricity generated on-site by buildings 2 and facility 3 within the community.

[0021] Building 2 is a detached house. Each Building 2 is inhabited by one or more residents. Each Building 2 is comprised of a residential group consisting of one or more residents. A residential group is a family. One account is assigned to each residential group, and each residential group has its own account. The accounts of residential groups residing in Building 2 are also assigned to Building 2.

[0022] Facility 3 is a shared facility used by multiple residential groups belonging to the community. Facility 3 is a building used, for example, as a storage room, equipment installation room, shelter, exercise area, party venue, lounge, meeting hall, or conference room.

[0023] Streetlight 4 is turned on at night and turned off during the day. Specifically, the daytime off and nighttime on of streetlight 4 is achieved by having a light sensor. In other words, when the amount of ambient light incident on the light sensor of streetlight 4 exceeds a predetermined threshold, streetlight 4 is turned on, and when the amount of ambient light incident on the light sensor is less than or equal to the predetermined threshold, streetlight 4 is turned off. Here, streetlight 4 receives power from the private line 10 described later and consumes that power by turning on.

[0024] To join the community, you must meet all of the following conditions (1) to (4), or one, two, or three of them. (1) The applicant's building must qualify as a ZEH (Net Zero Energy House) (2) The applicant's building must meet the specified seismic resistance rating (3) The building of the applicant must meet the specified performance grade. (4) The building of the applicant must qualify as a long-term superior quality housing.

[0025] <Power Network System> The power network system 1 comprises a private line 10, multiple electrical facilities 20, a shared energy storage facility 50, and a central control device 90.

[0026] The private power lines 10 are laid out in the local area, connecting local buildings 2 and facilities 3. The private power lines 10 are used to transmit power between these buildings 2 and facilities 3. More specifically, the private power lines 10 are used to transmit power between multiple electrical facilities 20 and shared energy storage facilities 50. The private power lines 10 are either buried underground or suspended in the air, supported by utility poles.

[0027] The central management device 90 includes a computer, display device, and input devices. The central management device 90 is connected to the internet. The central management device 90 operates a software-based management system. The management system operated by the central management device 90 has multiple accounts assigned to multiple residential groups. The functions of the central management device 90 will be described in detail later.

[0028] Multiple electrical equipment units 20 are installed in multiple buildings 2, and the accounts of residential groups residing in buildings 2 are also allocated to the electrical equipment units 20 installed in those buildings 2. These electrical equipment units 20 are connected to a private power line 10, allowing for the exchange of power between them through the private power line 10. A shared energy storage unit 50 is installed in facility 3 and is also connected to the private power line 10. The electrical equipment units 20 generate electricity using a private power generator 27 (described later) and forcibly supply a portion of the generated electricity to the shared energy storage unit 50 via the private power line 10. The electrical equipment units 20 consume the remaining generated electricity, store any surplus electricity, and then reverse-flow any surplus electricity into the transmission line 8. If the power consumption of the electrical equipment units 20 cannot be covered by the remaining generated electricity, or if the electrical equipment units 20 do not generate electricity, the electrical equipment units 20 receive power from the commercial grid power supply via the transmission line 8. The shared energy storage unit 50 stores the electricity forcibly supplied from each electrical equipment unit 20. The electricity stored in the shared energy storage facility 50 is for the residents of building 2, which belongs to the community. In the event of a power outage on the transmission line 8, the shared energy storage facility 50 supplies the stored electricity to each electrical facility 20. Because the shared energy storage facility 50 stores electricity before a power outage, each electrical facility 20 can use the electricity stored by the shared energy storage facility 50 for an extended period after the power outage.

[0029] The electrical equipment 20 in each building 2 forcibly outputs the generated power to the shared energy storage facility 50, The energy stored in the energy storage facility 50 is shared among the electrical equipment 20 of each building 2.

[0030] <Electrical equipment and shared energy storage facilities> As shown in Figure 2, each electrical facility 20 includes a general electrical wiring network 21, a critical electrical wiring network 23, one or more small power generators 25, a private power generator 27, a storage battery 29, a distribution unit 31, a power generation meter 33, a forward power flow meter 35, a reverse power flow meter 37, a power exchange meter 39, a power exchange meter 41, and an individual power management device 43.

[0031] As shown in Figure 3, the shared energy storage facility 50 includes a shared power generator 51, a shared energy storage unit 53, a shared power distribution unit 55, an outlet 57, a power generation meter 59, a power receiving meter 61, a power supply meter 63, and a shared power management device 65.

[0032] The components of the electrical equipment 20 and the shared energy storage equipment 50 will be described in detail below.

[0033] <Components of electrical equipment> <<General electrical wiring networks and critical electrical wiring networks>> The general electrical wiring network 21 and the critical electrical wiring network 23 are independent of each other and are spread throughout the building 2. The general electrical wiring network 21 and the critical electrical wiring network 23 are connected to the distribution unit 31. The critical electrical wiring network 23 consists of an electrical wiring network that supplies electricity to critical loads that are minimally necessary for the lives of residents in the event of an emergency such as a disaster or power outage. For example, lighting fixtures, refrigerators, air conditioners, water heaters, or communication network equipment (routers, wireless base stations, telephones, etc.) or two or more of these are connected to the critical electrical wiring network 23 as critical loads. The general electrical wiring network 21 consists of an electrical wiring network that supplies electricity to general loads other than critical loads.

[0034] A load is an electrical device that consumes power. In addition to the lighting fixtures, refrigerators, air conditioners, water heaters, and communication network equipment (routers, wireless base stations, wireless repeaters, telephones, etc.) mentioned above, televisions, audio equipment, recording devices, and kitchen appliances are also considered loads.

[0035] At least one critical load connected to the critical electrical wiring network 23 is connected to the processing unit 45 of the individual power management device 43 described below via signal lines or a home network. At least one general load connected to the general electrical wiring network 21 is connected to the processing unit 45 via signal lines or a home network. The signal lines or home network are laid out within the building 2.

[0036] <<Small-scale power generator>> The small power generator 25 is connected to the distribution unit 31 via the power generation meter 33. The small power generator 25 has, for example, a piezoelectric element or a motor. The small power generator 25 is installed, for example, on the floor, stairs, entrance approach, movable parts (e.g., hinges), handles, knobs, bathtubs, shower heads, toothbrushes, or beds within the building 2. When an resident unconsciously or consciously applies kinetic energy to the small power generator 25 through daily activities, the small power generator 25 generates electricity from the kinetic energy and outputs that electricity to the distribution unit 31. Daily activities refer to actions performed by residents while living in the building 2, such as opening doors, turning handles or knobs, going up and down stairs, walking, and brushing teeth.

[0037] Furthermore, guide lights may be installed on the approach to the entrance of Building 2, and a small power generator 25 that generates electricity from vibrations may also be installed on the approach to the entrance. In this case, when residents walk along the approach, the small power generator 25 generates electricity from the vibrations of walking, and the guide lights are illuminated by the generated power.

[0038] The installation of such a small power generation device 25 allows residents to carry out their daily activities without being conscious of power generation, which contributes to the storage of energy in the shared energy storage facility 50's shared energy storage unit 53.

[0039] <<Private power generation system>> The private power generation device 27 is connected to the distribution unit 31 via the power generation meter 33. The private power generation device 27 generates electricity from solar energy and outputs that electricity to the distribution unit 31.

[0040] The private power generation system 27 is a solar power generation system that includes solar panels 28, a junction box, and a power conditioner. The solar panels 28 are installed on the roof of building 2. The solar panels 28 are connected to the junction box. The junction box has current collectors and other components and collects electricity generated by each block of solar panels 28. The junction box is connected to the power conditioner. The power conditioner has a DC-AC converter and other components and converts the DC power output from the junction box into AC power, and outputs the AC power to the distribution unit 31. The power conditioner is connected to the distribution unit 31 via a power generation meter 33.

[0041] Furthermore, the private power generation device 27 may be a wind power generation device or a hydroelectric power generation device instead of a solar power generation device equipped with solar panels 28. In other words, the private power generation device 27 is not limited to a solar power generation device as long as it is a natural energy power generation device that converts natural energy into electricity. In addition, the private power generation device 27 may be a combination of multiple types of natural energy power generation devices.

[0042] <<Energy Storage Unit>> The power storage unit 29 is connected to the power distribution unit 31. When charging, the power storage unit 29 converts the power output from the power distribution unit 31 into chemical energy, thereby storing the power output from the power distribution unit 31 as chemical energy. When discharging, the power storage unit 29 converts the stored chemical energy into electricity, and outputs that electricity to the power distribution unit 31.

[0043] The battery storage unit 29 includes a power conditioner, a charge / discharge circuit, a measurement circuit, and a battery. The power conditioner includes an AC / DC converter and a DC / AC converter, etc., and converts the AC power output from the distribution unit 31 into DC power and outputs it to the charge / discharge circuit, and converts the DC power discharged from the battery via the charge / discharge circuit into AC power and outputs it to the distribution unit 31. During charging, the charge / discharge circuit charges the battery with the DC power output from the power conditioner, and during discharging, it releases the power stored in the battery to the power conditioner. The measurement circuit measures the remaining charge of the battery or its percentage and outputs the measured value of the remaining charge or its percentage to the individual power management device 43 described later. The percentage of the remaining charge refers to the ratio of the remaining charge to the full charge of the battery. Hereinafter, the remaining charge or its percentage of the battery storage unit 29 refers to the remaining charge or its percentage of the battery.

[0044] Hereinafter, the rated input of the battery 29 will also be referred to as the rated charging power, and the rated output of the battery 29 will also be referred to as the rated discharge power.

[0045] <<Distribution Unit>> The distribution unit 31 is connected to the private power generation device 27 and the small power generation device 25 via the generated energy meter 33. The distribution unit 31 is connected to the energy storage device 29. The distribution unit 31 is connected to the grid power transmission line 8 via the forward power flow energy meter 35 and the reverse power flow energy meter 37. The distribution unit 31 is connected to the private power line 10 via the shared energy meter 39 and the received energy meter 41.

[0046] The distribution unit 31 is equipped with circuit breakers, switches, and other components.

[0047] The distribution unit 31 has a power outage detection function. In other words, the distribution unit 31 detects power outages, that is, power outages in the transmission line 8. The power distribution unit 31 has a power distribution function. In other words, the power distribution unit 31 distributes power between the transmission line 8, private line 10, private power generator 27, small power generator 25, battery storage unit 29, general electrical wiring network 21, and important electrical wiring network 23. The power distribution by the power distribution unit 31 will be explained below.

[0048] <<<Normal power distribution>>> When no power outage is detected on the transmission line 8, the distribution unit 31 receives the privately generated power supplied from the private power generator 27 (privately generated power includes the power generated by the small power generator 25, but the power generated by the small power generator 25 is sufficiently greater than the power generated by the private power generator 27). low Therefore, the power generated by the small power generator 25 can be ignored. The same applies hereafter.) The first distribution power of the first distribution ratio is forcibly output to the private line 10, and the remaining second distribution power of the second distribution ratio is distributed to the transmission line 8, the battery 29, the general electrical wiring network 21, and the important electrical wiring network 23. Accordingly, the private power generator 27 of each building 2 contributes to the exchange of power to the electrical equipment 20 of the other buildings 2 and contributes to the storage of energy in the shared energy storage facility 50 of facility 3. Thus, the storage of energy in the shared energy storage facility 50 of facility 3 is fairly shared among the residential groups of each building 2.

[0049] The sum of the first and second allocation ratios is 100%, for example, the first and second allocation ratios are 20% and 80%, respectively. The sum of the first and second allocated power is equal to the self-generated power. The first and second allocation ratios may be fixed values ​​or variable values ​​that can be changed as needed. If the first and second allocation ratios are variable values, for example, residents or managers can set them using individual power management devices 43 or a central management device 90. The first and second allocation ratios may be values ​​common to all buildings 2 or all accounts, or they may be values ​​determined individually for each building 2 or account. If the first allocation ratios of each building 2 are equal to each other, the burden of energy storage for the shared energy storage facility 50 of the facility 3 will be fair.

[0050] The power distribution unit 31 outputs the first distribution power, which is the first distribution ratio of the electricity generated by the private power generator 27, to the private line 10, thereby supplying the first distribution power to the shared energy storage facility 50 and streetlights 4 of facility 3.

[0051] The distribution of the second distribution power to the transmission line 8, the battery storage 29, the general electrical wiring network 21, and the important electrical wiring network 23 is as follows (1) to (5).

[0052] (1) When the total power consumption of both the general load and the critical load is equal to the second distributed power, as shown in Figure 4, the distribution unit 31 outputs the second distributed power to the general electrical wiring network 21 and the critical electrical wiring network 23, but does not output power to the battery 29 or the transmission line 8, nor does it output or input power to the transmission line 8. Therefore, the general load and critical load within the building 2 operate without receiving power from the power company.

[0053] (2) When the total power consumption of both the general load and the critical load is covered by the second distribution power, that is, when the total power consumption of both the general load and the critical load is less than the second distribution power, and the remaining charge of the battery 29 is not full, as shown in Figure 5 or Figure 6, the distribution 31 outputs the portion of the second distribution power equivalent to the total power consumption to the general electrical wiring network 21 and the critical electrical wiring network 23, and outputs the surplus power obtained by subtracting the total power consumption from the second distribution power (however, the maximum amount of this surplus power is the rated charging power of the battery 29) to the battery 29. Therefore, the battery 29 is charged while the general load and critical load are operating and consuming power. Furthermore, if the surplus power obtained by subtracting the total power consumption from the second distribution power exceeds the rated charging power of the battery 29, as shown in Figure 6, the distribution 31 subtracts the total power consumption and the rated charging power from the second distribution power The surplus power is output to the transmission line 8. Therefore, while general and critical loads are operating, the storage battery 29 is charged, and the surplus power that flows back from the distribution unit 31 to the transmission line 8 is sold from the residents, who are the consumers, to the power company.

[0054] (3) When the total power consumption of both the general load and the critical load is less than the second distribution power, and the charge level of the battery 29 is full, as shown in Figure 7, the distribution unit 31 outputs the portion of the second distribution power equivalent to the total power consumption to the general electrical wiring network 21 and the critical electrical wiring network 23, and outputs the surplus power obtained by subtracting the total power consumption from the second distribution power to the transmission line 8. Therefore, while the general load and critical load are operating, the battery 29 is not charged or discharged, and the surplus power that flows back from the distribution unit 31 to the transmission line 8 is sold to the power company by the residents who are consumers.

[0055] (4) If the total power consumption of both the general load and the critical load cannot be covered by the second distribution power, that is, if the total power consumption of both the general load and the critical load exceeds the second distribution power, and the remaining charge of the storage battery 29 is zero, then, as shown in Figure 8, the distribution unit 31 receives supplementary power from the transmission line 8, which is the total power consumption minus the second distribution power, and outputs the sum of this supplementary power and the second distribution power to the general electrical wiring network 21 and the critical electrical wiring network 23. Therefore, while the general load and critical load are operating, the storage battery 29 is not charged or discharged, and the supplementary power that flows from the transmission line 8 to the distribution unit 31 is purchased by the power company from the consumer. If the private power generation device 27 does not generate power at night, etc., the private power generation power, the first distribution power, and the second distribution power are zero, so all of the supplementary power received by the distribution unit 31 from the transmission line 8 is used by the distribution unit 31 to cover the total power consumption of the general load and the critical load.

[0056] (5) If the total power consumption of both the general load and the critical load exceeds the second distribution power, and the remaining charge of the storage battery 29 is not zero, as shown in Figure 9 or Figure 10, the storage battery 29 discharges, and the distribution unit 31 receives discharge power from the storage battery 29, which is the total power consumption minus the second distribution power (however, the maximum amount of this discharge power is the rated discharge power of the storage battery 29), and outputs this discharge power and the second distribution power to the general electrical wiring network 21 and the critical electrical wiring network 23. If the total power consumption of both the general load and the critical load is still not covered, that is, if the sum of the rated discharge power of the storage battery 29 and the second distribution power is less than the total power consumption of the general load and the critical load, as shown in Figure 10, the distribution unit 31 receives supplementary power from the transmission line 8, which is the sum of the two values ​​minus the total power consumption, and outputs this supplementary power to the general electrical wiring network 21 and the critical electrical wiring network 23. Therefore, while the battery 29 is discharging, the supplementary power flowing forward from the transmission line 8 to the distribution unit 31 is purchased by the power company to consumers, and the general loads and critical loads operate. If the private power generation device 27 does not generate power at night, etc., the private power generation power, the first distributed power, and the second distributed power are zero, so all of the supplementary power received from the transmission line 8 to the distribution unit 31 and the discharged power of the battery 29 are used by the distribution unit 31 to cover the total power consumption of the general loads and critical loads. However, the distribution unit 31 may not discharge the battery 29 during the nighttime hours, and a portion of the inexpensive nighttime price supplementary power received from the transmission line 8 to the distribution unit 31 may be supplied to the battery 29 as charging power by the distribution unit 31, with the remainder being used by the distribution unit 31 to cover the total power consumption of the general loads and critical loads.

[0057] <<<Power distribution during power outages>>> The distribution unit 31 interrupts the forced power supply from the private generator 27 to the private line 10 when it detects a power outage on the transmission line 8. As a result, the privately generated electricity produced by the private generator 27 in each building 2 is used for consumption within the electrical equipment 20 of that building 2.

[0058] Furthermore, when a power outage is detected in the transmission line 8, the distribution unit 31 disconnects itself from the general electrical wiring network 21 and the transmission line 8. Because the general electrical wiring network 21 is disconnected from the distribution unit 31, the general loads within the building 2 stop consuming power, so the remaining charge in the shared battery 53 of the shared energy storage equipment 50 of facility 3 is not wasted during a power outage in the transmission line 8, and the operating time of critical loads is extended. This allows for precise timing. By disconnecting the power transmission line 8 from the distribution unit 31, the electricity generated by the private power generator 27 is not purchased, and the electricity generated within the community becomes available for use only within the community.

[0059] After the distribution unit 31 is disconnected from the general electrical wiring network 21 and the transmission line 8, the distribution unit 31 distributes the privately generated power supplied from the private power generation device 27 to the important electrical wiring network 23, the battery storage device 29, and the private line 10 as follows (1) to (5).

[0060] (1) When the total power consumption of critical loads connected to the critical electrical wiring network 23 is equal to the self-generated power, as shown in Figure 11, the distribution unit 31 outputs the self-generated power to the critical electrical wiring network 23 without receiving power from the battery 29 and the private line 10. Therefore, even in the event of a power outage on the transmission line 8, the critical loads in building 2 will continue to operate.

[0061] (2) If the total power consumption of critical loads connected to the critical electrical wiring network 23 cannot be covered by the self-generated power, that is, if the total power consumption of critical loads connected to the critical electrical wiring network 23 exceeds the self-generated power, and the remaining charge of the battery 29 is zero, then, as shown in Figure 12, the distribution unit 31 receives supplementary power from the private line 10, which is the total power consumption minus the self-generated power, and outputs the combined power of this supplementary power and the self-generated power (corresponding to the total power consumption of the critical loads) to the critical electrical wiring network 23. Therefore, even in the event of a power outage on the transmission line 8, the electrical equipment 20 of building 2 receives power from the electrical equipment 20 of other buildings 2 or the shared battery storage equipment 50 of facility 3 via the private line 10 to meet the power demand of the critical loads in building 2. If the self-generating device 27 does not generate power at night, etc., the self-generated power is zero, so all of the supplementary power received by the distribution unit 31 from the private line 10 is used by the distribution unit 31 to cover the total power consumption of the critical loads.

[0062] (3) If the total power consumption of critical loads connected to the critical electrical wiring network 23 exceeds the self-generated power, and the remaining charge of the battery 29 is not zero, the distribution unit 31 receives discharge power from the battery 29 (however, the maximum of this discharge power is the rated discharge power of the battery 29) obtained by subtracting the self-generated power from the total power consumption, as shown in Figure 13 or Figure 14, and outputs this discharge power and the self-generated power to the critical electrical wiring network 23. If the total power consumption of the critical loads is still not covered, that is, if the sum of the rated discharge power of the battery 29 and the self-generated power is less than the total power consumption of the critical loads, the distribution unit 31 receives supplementary power from the private line 10 obtained by subtracting that sum from the total power consumption of the critical loads, as shown in Figure 14. Therefore, even in the event of a power outage, the discharged power from the battery 29 is used to meet the power demand of critical loads in building 2. If there is still a power shortage, the electrical equipment 20 of building 2 receives power from the electrical equipment 20 of other buildings 2 or the shared battery storage equipment 50 of facility 3 via the private line 10. If the private power generator 27 does not generate power at night or other times, the private power generation is zero, and all the power received by the distribution unit 31 from the private line 10, the battery 29, or both is used by the distribution unit 31 to meet the total power consumption of critical loads.

[0063] (4) When the total power consumption of critical loads connected to the critical electrical wiring network 23 is fully covered by the self-generated power, that is, when the total power consumption of critical loads connected to the critical electrical wiring network 23 is less than the self-generated power, and the charge level of the battery 29 is full, as shown in Figure 15, the distribution unit 31 outputs the portion of the self-generated power equivalent to the total power consumption to the critical electrical wiring network 23, and outputs the surplus power obtained by subtracting the total power consumption from the self-generated power to the private line 10. Therefore, even in the event of a power outage, the critical loads in building 2 will continue to operate, and the surplus power will be supplied to the electrical equipment 20 of other buildings 2, the shared energy storage equipment 50 of facility 3, and the streetlights 4.

[0064] (5) If the total power consumption of important loads connected to the important electrical wiring network 23 is less than the self-generated power, and the remaining charge of the battery storage 29 is not full, then as shown in Figure 16 or Figure 17 In addition, the distribution unit 31 outputs the portion of the self-generated power equivalent to the total power consumption to the critical electrical wiring network 23, and outputs the surplus power obtained by subtracting the total power consumption from the self-generated power (however, the maximum amount of this surplus power is the rated charging power of the storage unit 29) to the storage unit 29. Furthermore, if the surplus power obtained by subtracting the total power consumption from the self-generated power exceeds the rated charging power of the storage unit 29, the distribution unit 31 outputs the surplus power obtained by subtracting the total power consumption and the rated charging power from the self-generated power to the private line 10. Therefore, even in the event of a power outage, critical loads in building 2 continue to operate, the storage unit 29 is charged, and if surplus power is still generated, the surplus power is supplied to the electrical equipment 20 of other buildings 2, the shared energy storage equipment 50 of facility 3, and the streetlights 4.

[0065] In the above explanation, it was assumed that the distribution unit 31 would disconnect from the general electrical wiring network 21 when a power outage is detected, but such disconnection is not required. In this case, in the above explanation of "power distribution during a power outage," the explanation regarding the critical electrical wiring network 23 applies to both the critical electrical wiring network 23 and the general electrical wiring network 21, the explanation regarding critical loads applies to both general loads and critical loads, and the explanation regarding the total power consumption of critical loads applies to the total power consumption of both general loads and critical loads.

[0066] <<Electricity meter>> The power generation meter 33 measures the amount of power generated by the private power generation device 27 and outputs the measured value to the individual power management device 43, in particular the calculation processing device 45. The amount of power generated measured by the power generation meter 33 may be cumulative from the start of measurement by the power generation meter 33, or it may be cumulative from the time of reset by resetting to zero at predetermined intervals (for example, one month).

[0067] <<Forward flow energy meter>> The forward power flow meter 35 measures the amount of forward power flowed from the transmission line 8 to the distribution unit 31 and outputs the measured value to the individual power management device 43, in particular the calculation processing unit 45. The amount of forward power flow measured by the forward power flow meter 35 may be cumulative from the start of measurement by the forward power flow meter 35, or it may be cumulative from the time of reset by resetting it to zero at predetermined intervals (for example, every month).

[0068] <<Reverse power flow energy meter>> The reverse power flow meter 37 measures the amount of reverse power flowed from the distribution unit 31 to the transmission line 8 and outputs the measured value to the individual power management device 43, in particular the calculation processing unit 45. The amount of reverse power flow measured by the reverse power flow meter 37 may be cumulative from the start of measurement by the reverse power flow meter 37, or it may be cumulative from the time of reset by resetting to zero at predetermined intervals (for example, one month).

[0069] <<Universal electricity meter>> The shared electricity meter 39 measures the amount of shared electricity output from the distribution unit 31 to the private line 10 and outputs the measured value to the individual power management device 43, in particular the calculation processing unit 45. The amount of shared electricity measured by the shared electricity meter 39 may be cumulative from the start of measurement by the shared electricity meter 39, or it may be cumulative from the time of reset by resetting to zero at predetermined intervals (for example, one month).

[0070] <<Accommodated electricity meter>> The power consumption meter 41 measures the amount of power received from the private line 10 to the distribution unit 31 and outputs the measured value to the individual power management device 43, in particular the calculation processing unit 45. Accommodated The amount of electricity may be cumulative from the start of measurement by the electricity consumption meter 41, or it may be cumulative from the time of reset by resetting it to zero at predetermined intervals (for example, every month).

[0071] <<Individual power management device>> The individual power management device 43 is connected to the critical electrical wiring network 23 and operates by receiving power from the critical electrical wiring network 23. The individual power management device 43 may also have a battery. In this case, the individual power management device 43 operates using the discharged power of the battery when it cannot receive power from the critical electrical wiring network 23.

[0072] Individual power management device 43 is part of a Home Energy Management System (HEMS). It is a small, board-type computer system called an Energy Management System. The individual power management device 43 is installed on the interior wall of building 2. The individual power management device 43 has a processing unit 45, a display unit 47, and an input unit 49.

[0073] The display unit 47 is a matrix display, a segment display, or a combination thereof. The display unit 47 displays information according to the signals input from the arithmetic processing unit 45.

[0074] The input unit 49 has multiple push buttons and switches. When operated by a resident or the like, the input unit 49 outputs a signal to the arithmetic processing unit 45 according to the operation. If the first and second allocation ratios are variable values, the resident or manager inputs the values ​​of the first and second allocation ratios via the input unit 49, and the arithmetic processing unit 45 acquires the values ​​of the first and second allocation ratios and sets the settings of the power distribution unit 31 to these acquired values. In addition, when a resident inputs private information of residents living in their building 2 via the input unit 49, the arithmetic processing unit 45 stores the private information and transmits it to the central management device 90. The central management device 90 stores the private information received from each arithmetic processing unit 45, linking it to an account. Private information includes, for example, the number of family members, family structure (e.g., single person, married couple only, single parent and unmarried children only, three generations, other households), age, gender, occupation or lifestyle (e.g., morning person, daytime person, evening person, late-night person), health status, presence or absence of illness or injury, or two or more combinations of these.

[0075] The arithmetic processing unit 45 stores a program. The functions of the arithmetic processing unit 45 of this disclosure are realized by the execution of the program by the arithmetic processing unit 45.

[0076] The arithmetic processing unit 45 is connected to the internet. The arithmetic processing unit 45 communicates with the central management unit 90 via the internet. The arithmetic processing unit 45 is configured with account information related to the accounts held by the residential group. The arithmetic processing unit 45 uses this account information to log in to the management system operated by the central management unit 90.

[0077] The computing unit 45 is connected to a local area network that covers the local area where the power network system 1 is built. The computing unit 45 communicates with the shared power management device 65 of facility 3 via the Internet or the local area network.

[0078] The processing unit 45 can access the servers of housing-related service providers via the internet to receive housing-related services. For example, the processing unit 45 can receive real-time local weather information or receive and update its own software.

[0079] The arithmetic processing unit 45 controls loads within the building 2, connected via signal lines, wireless, or a home network, according to the output signals of the input unit 49 in response to resident operations, or according to an automatic control program. For example, the arithmetic processing unit 45 controls the on / off state of loads and adjusts their operating intensity. The arithmetic processing unit 45 also controls the operating state of these loads, for example. For example, the display unit 47 shows the ON state, OFF state, or set operating intensity. The load controlled by the arithmetic processing unit 45 is, for example, an air conditioner, a water heater, a floor heater, or lighting.

[0080] The processing unit 45 is connected to the battery 29 by signal lines, wirelessly, or via a home network, and manages the remaining charge or percentage of the battery 29.

[0081] The processing unit 45 manages the generated power, forward power, reverse power, supplied power, and supplied power measured by the generated power meter 33, forward power meter 35, reverse power meter 37, supplied power meter 39, and supplied power meter 41, respectively.

[0082] The arithmetic processing unit 45 is connected to the distribution unit 31 by signal lines and manages generated power, forward power flow, reverse power flow, power exchanged, power received, charging power, discharge power, critical load power consumption, general load power consumption, and total power consumption. Here, generated power refers to the power generated by the private power generation device 27. Forward power flow refers to the power that flows forward from the transmission line 8 to the distribution unit 31. Reverse power flow refers to the power that flows backward from the distribution unit 31 to the transmission line 8. Exchanged power refers to the power output from the distribution unit 31 to the private line 10. Received power refers to the power that is received from the private line 10 to the distribution unit 31. Charging power refers to the power that is charged from the distribution unit 31 to the battery 29. Discharge power refers to the power that is discharged from the battery 29 to the distribution unit 31. Critical load power refers to the total power consumption of critical loads connected to the critical electrical wiring network 23. General load power refers to the total power consumption of general loads connected to the general electrical wiring network 21. The sum of general load power and critical load power corresponds to the total power consumption.

[0083] <<<Examples of management performed by the processing unit of individual power management devices>>> The management performed by the arithmetic processing unit 45 includes, for example, the following (1) to (5).

[0084] (1) Acquisition The arithmetic processing unit 45 detects generated power, forward power flow power, reverse power flow power, supplied power, received power, charging power, discharge power, critical load power consumption, general load power consumption, and total power consumption through the distribution unit 31 and acquires these detected values. The arithmetic processing unit 45 also acquires measured values ​​of generated power, forward power flow power, reverse power flow power, supplied power, and received power from the generated power meter 33, forward power flow meter 35, reverse power flow meter 37, supplied power meter 39, and received power meter 41, respectively. The arithmetic processing unit 45 acquires measured values ​​of the remaining charge of the battery 29 or its percentage from the battery 29.

[0085] (2) Aggregation The arithmetic processing unit 45 performs various calculations using at least one detected value from among generated power, forward power flow power, reverse power flow power, supplied power, supplied power, charging power, discharge power, critical load power consumption, general load power consumption, and total power consumption, and at least one measured value from among generated power amount, forward power flow amount, reverse power flow amount, supplied power amount, supplied power amount, remaining charge, or remaining charge percentage. For example, the arithmetic processing unit 45 calculates the real-time self-consumption rate by subtracting the total power consumption from the generated power and dividing the difference by the generated power. Also, for example, at predetermined intervals (e.g., one month), the arithmetic processing unit 45 calculates the periodic self-consumption rate by subtracting the sum of the reverse power flow amount and the supplied power amount from the generated power amount for the predetermined period (e.g., one month) and dividing the difference by the generated power amount. Furthermore, for example, the arithmetic processing unit 45 calculates the forward power flow amount for a predetermined period (for example, one month) and calculates the amount of electricity purchased by multiplying the forward power flow amount by the electricity purchase price. Furthermore, for example, the arithmetic processing unit 45 calculates the reverse power flow amount for a predetermined period (for example, one month) and calculates the amount of electricity sold by multiplying the reverse power flow amount by the electricity sales price. Furthermore, for example, the arithmetic processing unit 45 calculates the amount of electricity exchanged for a predetermined period (for example, one month) and calculates the amount of electricity exchanged by multiplying the electricity exchange price. The amount of electricity to be supplied is calculated and converted into exchangeable exchange points with economic value. For example, the arithmetic processing unit 45 calculates the amount of electricity supplied for a predetermined period (for example, one month) at predetermined intervals (for example, one month), calculates the amount of electricity supplied by multiplying the amount of electricity supplied by the unit price of electricity supplied, and converts the amount of electricity supplied into exchangeable points with economic value. Here, the unit price of electricity supplied during a power outage is set higher than the unit price of electricity supplied during normal times, and the unit price of electricity supplied during a power outage is set higher than the unit price of electricity supplied during normal times. In addition, the higher the disaster resistance of the private power generator 27 or the battery storage unit 29 or both, the higher the unit price of electricity supplied, thus providing an incentive to increase the disaster resistance of the private power generator 27 or the battery storage unit 29. Furthermore, the higher part or all of the private power generator 27 or the battery storage unit 29 is installed, the higher the disaster resistance of the private power generator 27 or the battery storage unit 29. Furthermore, if part or all of the private power generation system 27 and the battery storage system 29 are installed indoors, the disaster resilience of the private power generation system 27 and the battery storage system 29 is enhanced.

[0086] (3)Memory The arithmetic processing unit 45 stores the detected and measured values ​​acquired as described in (1) above in chronological order. The arithmetic processing unit 45 also stores the calculation results as described in (2) above in chronological order.

[0087] (4)Display The arithmetic processing unit 45 displays at least one of the real-time detected values ​​and measured values ​​acquired as described in (1) above on the display unit 47. The arithmetic processing unit 45 displays at least one of the real-time calculation results calculated as described in (2) above on the display unit 47.

[0088] (5) Send The arithmetic processing unit 45 transmits the detected and measured values ​​acquired as described in (1) above to the shared power management device 65 and the central management device 90 via the internet. The arithmetic processing unit 45 also transmits the calculation results as described in (2) above to the shared power management device 65 and the central management device 90.

[0089] <<<Display of operating status of shared energy storage facility>>> As explained later in "Example of Management Performed by the Computing Unit of the Shared Power Management Device," the computing unit 67 of the shared power management device 65 transmits the detected value of the power generated by the shared power generator 51 to the computing unit 45 of each individual power management device 43. The computing unit 45 receives the detected value of the power generated transmitted by the computing unit 67 and displays the detected value on the display unit 47.

[0090] Similarly, the arithmetic processing unit 45 displays the detected values ​​of the received power and supplied power received from the arithmetic processing unit 67 on the display unit 69. Furthermore, the arithmetic processing unit 45 displays the measured values ​​of the generated power, received power, and supplied power received from the arithmetic processing unit 67 on the display unit 47. Furthermore, the arithmetic processing unit 45 displays the measured value of the remaining charge or its percentage received from the arithmetic processing unit 67 on the display unit 47.

[0091] Therefore, residents can monitor the operating status of the shared energy storage equipment 50 within facility 3 while remaining in their own building 2. In other words, residents can monitor the following (1) to (4):

[0092] (1) Power and amount of electricity generated by the shared power generation device 51 (2) Power and amount of power supplied from the shared energy storage facility 50 to the electrical equipment 20 via the private line 10 (3) Power and amount of electricity received from the electrical equipment 20 to the shared energy storage equipment 50 via the private line 10 (4) The remaining charge or percentage of the shared battery 53

[0093] <<<Cashback, point rewards, and thank-you gifts>>> Under normal circumstances, the processing unit 45 subtracts a reference value (or the sum of the received power and the reference value) from the amount of electricity exchanged during a predetermined period (for example, one month) at predetermined intervals (for example, one month). If the difference obtained in this way (hereinafter referred to as the energy storage contribution) is positive, it means that the residents of building 2 have made a significant contribution to the exchange of electricity, particularly to the storage of electricity in the shared energy storage facility 50 described later. Furthermore, the greater the energy storage contribution obtained in this way, the greater the contribution to the exchange of electricity, particularly to the storage of electricity in the large shared energy storage unit 53 described later. By providing economic rewards to those who contribute to the exchange of electricity, an incentive for energy-saving living and the exchange of electricity is stimulated.

[0094] To achieve this, the arithmetic processing unit 45 calculates the energy storage contribution amount by multiplying the energy storage contribution level calculated as described above by the energy storage unit price. The arithmetic processing unit 45 also converts the energy storage contribution amount into convertible energy storage contribution points with economic value. When the arithmetic processing unit 45 transmits the energy storage contribution level, energy storage contribution amount, and energy storage contribution points to the central management unit 90, the central management unit 90 receives the energy storage contribution level, energy storage contribution amount, and energy storage contribution points and stores this received data linked to the account. The administrator or other person then grants residents money or energy storage contribution points corresponding to the energy storage contribution amount stored in the central management unit 90, or delivers a thank-you gift corresponding to the energy storage contribution amount through a contractor or other person.

[0095] The reference value is a value greater than zero. The reference value is the minimum amount of electricity that each resident of building 2 should contribute to the storage of the shared energy storage facility 50 described later. The reference value is either a value set individually for each building 2 or account, or a value common to all buildings 2. An example of a reference value set individually for each building 2 or account is one corresponding to the number of residents in building 2. The reference value may also be a constant or a variable. If the reference value is a variable, the arithmetic processing unit 45 may calculate the reference value, or the central management device 90 may calculate the reference value and transmit it to the arithmetic processing unit 45.

[0096] Since increasing energy storage contribution, energy storage amount, and energy storage contribution points brings economic benefits to residents, they are given an incentive to increase their energy storage contribution, energy storage amount, or energy storage contribution points, that is, an incentive to increase the amount of electricity they exchange. In addition, residents will live in a way that increases the amount of electricity they exchange in order to receive rewards.

[0097] <<<Rank Display>>> As will be explained later in the "ranking" section, the central management device 90 transmits the classification rank, total number of accounts in each category, overall rank, and total number of accounts to each processing unit 45. Each processing unit 45 then receives the classification rank, total number of accounts in each category, overall rank, and total number of accounts, and displays the classification rank, total number of accounts in each category, overall rank, and total number of accounts on the display unit 47.

[0098] <<<Status within the category>>> As will be explained later in the section on "Status Distribution within a Class," the central management device 90 transmits the total power consumption, real-time self-consumption rate, period-based self-consumption rate, amount of shared power, amount of shared power, shared points, energy storage contribution, energy storage contribution amount, or energy storage contribution points for all accounts belonging to the common class to the arithmetic processing unit 45. Then, each arithmetic processing unit 45 receives the total power consumption, real-time self-consumption rate, period-based self-consumption rate, amount of shared power, amount of shared power, shared points, energy storage contribution, energy storage contribution amount, or energy storage contribution points for all accounts belonging to the common class, and displays the total power consumption, real-time self-consumption rate, period-based self-consumption rate, amount of shared power, amount of shared power, shared points, energy storage contribution, energy storage contribution amount, or energy storage contribution points for each account on the display unit 47.

[0099] <<<Restrictions on the amount of electricity exchanged>>> In order to ensure that residents of each building 2 can fairly utilize the remaining charge in the shared battery 53 of the shared energy storage facility 50 during a power outage, the amount of electricity that each building 2 can receive from the shared energy storage facility 50 (described below) during a power outage is limited to a predetermined threshold. This will be explained in detail below.

[0100] When the arithmetic processing unit 45 detects a power outage in the transmission line 8 through the distribution unit 31, it obtains the measured value from the power meter 41 at that time. This is the start of the power outage, and the measured value at this time is called the power amount supplied at the start of the power outage.

[0101] Subsequently, the arithmetic processing unit 45 calculates the power consumption at the start of the power outage from the measured value of the power consumption meter 41. flexibility The amount of electricity is subtracted, and the difference is compared with a predetermined threshold. This difference increases when the electrical equipment 20 of building 2 receives power from the shared energy storage facility 50 of facility 3 after the start of the power outage.

[0102] If the difference from the comparison exceeds a predetermined threshold, the arithmetic processing unit 45 causes the distribution unit 31 to perform a power interruption that disconnects the private line 10 from the distribution unit 31.

[0103] Here, the predetermined threshold is a value set individually for each building 2, electrical equipment 20, or account. Alternatively, the predetermined threshold is a value common to each building 2, each electrical equipment 20, or each account. Examples of predetermined thresholds set individually for each building 2, electrical equipment 20, or account include those determined based on the amount of electricity exchanged (this amount of electricity exchanged is calculated by the arithmetic processing unit 45 as described above) or the energy storage contribution (this energy storage contribution is calculated by the arithmetic processing unit 45 as described above) during a predetermined period before the power outage (e.g., one month), or those corresponding to the number of residents in building 2, or those determined based on private information (private information is stored by the arithmetic processing unit 45 and the central management unit 90), or those obtained by adding a value corresponding to the number of residents in building 2 to a value corresponding to the amount of electricity exchanged (this amount of electricity exchanged is calculated by the arithmetic processing unit 45 as described above) or the energy storage contribution (this energy storage contribution is calculated by the arithmetic processing unit 45 as described above) during a predetermined period before the power outage (e.g., one month). Furthermore, the number of residents in building 2 corresponds to the number of family members in the private information stored by the arithmetic processing unit 45 or the central management unit 90, as entered by the residents via the input unit 49, as described above.

[0104] Furthermore, the predetermined threshold may be a constant or a variable. If the predetermined threshold is a variable, the arithmetic processing unit 45 may calculate the predetermined threshold, or the arithmetic processing unit 67 of the central control unit 90 or the shared power management unit 65 described later may calculate the predetermined threshold and transmit it to the arithmetic processing unit 45. For example, the arithmetic processing unit 45 or the central control unit 90 may add a value corresponding to the number of occupants of building 2 to a value corresponding to the amount of electricity exchanged or the energy storage contribution during a predetermined period before the power outage (for example, one month), and the sum of these values ​​may be used as a predetermined threshold individually set for each electrical equipment 20. Alternatively, the arithmetic processing unit 45 or the central control unit 90 may determine a value based on the amount of electricity exchanged (this amount of electricity exchanged is calculated by the arithmetic processing unit 45 as described above) or the energy storage contribution (this energy storage contribution is calculated by the arithmetic processing unit 45 as described above) during a predetermined period before the power outage (for example, one month), and the determined value may be used as a predetermined threshold individually set for each electrical equipment 20. Alternatively, the arithmetic processing unit 67 acquires a measured value of the remaining charge from the shared battery 53 when the power outage begins, divides that measured value by the number of buildings 2, and the quotient is used as a predetermined threshold common to each electrical equipment 20. Alternatively, the central control device 90 receives a measured value of the remaining charge of the shared battery 53 from the arithmetic processing unit 67 when the power outage begins, divides that measured value by the number of buildings 2, and the quotient is used as a predetermined threshold common to each electrical equipment 20. Alternatively, the arithmetic processing unit 45 receives a measured value of the remaining charge of the shared battery 53 from the arithmetic processing unit 67 of the shared power management device 65 or the central control device 90 when the power outage begins, multiplies that measured value of the remaining charge by the second distribution ratio, and the product is used as a predetermined threshold common to each electrical equipment 20 or electrical equipment These are used as predetermined thresholds set individually for each set of 20.

[0105] If the predetermined threshold is a common value for each building 2, then the amount of electricity that can be supplied to the electrical equipment 20 of each building 2 during a power outage will be common to all buildings 2.

[0106] If the predetermined threshold is the same for all electrical equipment 20 in building 2, then in the event of a power outage, residents of each building 2 can more fairly utilize the remaining charge of the shared battery 53 in facility 3.

[0107] If the predetermined threshold is the quotient obtained by dividing the remaining charge of the shared battery 53 by the number of buildings 2, the remaining charge of the shared battery 53 of facility 3 is divided equally among the electrical equipment 20 of each building 2.

[0108] If a predetermined threshold is set individually for each electrical equipment 20 in building 2, then in the event of a power outage, the remaining charge in the shared battery 53 of facility 3 will be divided among the electrical equipment 20 of each building 2 according to the individual circumstances of the residents of each building 2.

[0109] If a predetermined threshold is determined individually based on the number of residents in each building 2, then in the event of a power outage, the residents of each building 2 can more fairly utilize the remaining charge in the shared battery storage 53 of facility 3.

[0110] If a predetermined threshold is determined based on the amount of electricity exchanged before a power outage, residents of each building 2 will adopt lifestyles that increase the amount of electricity exchanged before a power outage in order to receive more electricity during the outage.

[0111] If the predetermined threshold is the product obtained by multiplying the remaining charge of the shared battery 53 by the second distribution ratio, then in the event of a power outage, the residents of each building 2 can fairly utilize the remaining charge of the shared battery 53 of facility 3.

[0112] If the predetermined threshold is determined based on private information, the amount of electricity available after the start of the power outage will take into account the individual circumstances of the residents of each building 2.

[0113] <<<Surcharge on the unit price for electricity exchanged for amounts exceeding a certain limit>>> In the event of a power outage, the amount of electricity that each building 2 can receive from the shared energy storage facility 50 (described below) will be limited as described above, but the unit price for receiving electricity will be increased. Specifically, it will be as follows:

[0114] When the arithmetic processing unit 45 detects a power outage in the transmission line 8 through the distribution unit 31, it reads the measured value of the power exchange meter 41 at that time. covered Flexible electricity meter 41 It is obtained from [source]. The measured value at this time is called the amount of power supplied at the start of the power outage.

[0115] Subsequently, the arithmetic processing unit 45 calculates the power consumption at the start of the power outage from the measured value of the power consumption meter 41. flexibility The amount of electricity is subtracted, and the difference is compared to a predetermined threshold. This difference is the amount of electricity consumed in building 2 after the start of the power outage. electricity The power supply increases when facility 20 receives electricity from facility 3's shared energy storage facility 50.

[0116] If the difference in the comparison exceeds a predetermined threshold, the arithmetic processing unit 45 acquires and stores the measured value of the power consumption meter 41 at that time. This measured value is called the power consumption amount at the start of the premium adjustment.

[0117] Subsequently, when the arithmetic processing unit 45 detects the energization of the power transmission line 8 through the distribution unit 31, it reads the measured value of the power exchange meter 41 at that time. covered Flexible electricity meter 41 The data is obtained and stored. The measured value at this time is called the amount of power supplied at the end of the premium adjustment period.

[0118] Then, the arithmetic processing unit 45 subtracts the amount of power supplied at the start of the surcharge from the amount of power supplied at the end of the surcharge, and multiplies the difference by the surcharge unit price. This product is called the surcharge amount. Next, The arithmetic processing unit 45 adds a premium to the amount borrowed for a predetermined period (for example, one month) calculated as described above. Furthermore, the amount of electricity received with the surcharge added is subject to (3) storage, (4) display, and (5) transmission in “Examples of management performed by the processing unit of the individual power management device”.

[0119] <<<Load control performed by the processing unit of the individual power management device>>> During a power outage, the power consumption of loads within Building 2 may be limited, or their functions may be restricted. This will be explained in detail below.

[0120] When the arithmetic processing unit 45 detects a power outage in the transmission line 8 through the distribution unit 31, it reduces the operating intensity of loads connected via signal lines, wireless, or home networks, limiting the operating intensity to a predetermined percentage (e.g., 25%) of the maximum operating intensity. For example, if the load is a dimmer, the arithmetic processing unit 45 reduces the illumination intensity of the dimmer to a predetermined percentage of the maximum illumination intensity.

[0121] When the arithmetic processing unit 45 detects a power outage in the power transmission line 8 through the distribution unit 31, it restricts the functionality of loads connected via signal lines, wireless, or home networks. For example, if the load is a luminaire with a color adjustment function, the arithmetic processing unit 45 restricts the luminaire's light emission color to a predetermined color and adjusts it to that color, preventing the luminaire's light emission color from being adjusted to any other color.

[0122] <<<Pseudo power outage (1)>>> The distribution unit 31 is equipped with a simulated power outage switch. When a resident or other user turns on the simulated power outage switch of the distribution unit 31, the distribution unit 31 disconnects itself from the power transmission line 8. In this state, the distribution unit 31 performs the power distribution during a power outage as described above. Therefore, residents can understand the power consumption of their load during a power outage and develop a life continuity plan.

[0123] Furthermore, when the distribution unit 31 is disconnected from the power transmission line 8 by the simulated power outage switch, the processing unit 45 limits the power consumption of the load or restricts its functions as described above. If the load is a light fixture with dimming and color adjustment functions, the illumination intensity and color of the light fixture are limited to produce a predetermined effect. For example, a moody atmosphere, the appearance of outdoor lighting at night, a starry sky, or a campfire can be created.

[0124] Furthermore, if residents of each building 2 simultaneously turn on the simulated power outage switch on the distribution unit 31 within their respective buildings 2, they can understand the status of power exchange from the shared energy storage facility 50 (described later) to the electrical equipment 20 in each building 2. This allows for the creation of better plans for continuing daily life.

[0125] <<<Pseudo power outage (2)>>> The arithmetic processing unit 67 of the shared power management device 65 or the central management device 90 simultaneously transmits a simulated power outage command signal to the arithmetic processing unit 45 of each building 2. The timing at which the arithmetic processing unit 67 transmits the simulated power outage command signal is, for example, set in the program or when an administrator or the like issues a command to the arithmetic processing unit 67 via the input unit 71 described later. The same applies to the timing at which the central management device 90 transmits the simulated power outage command signal.

[0126] When each processing unit 45 receives a command signal, it causes the distribution unit 31 to perform a cutoff that disconnects it from the power transmission line 8. As a result, each distribution unit 31 performs the power distribution during a power outage as described above. Therefore, residents can understand the power consumption of their loads during a power outage and develop a life continuity plan.

[0127] Furthermore, each processing unit 45 limits the power consumption of the load or restricts its functions as described above. For example, if the load is a light fixture with dimming and color temperature adjustment functions, the illumination intensity and color of the light fixture will be limited to create a specific effect. For example, a moody atmosphere, the appearance of outdoor lighting at night, a starry sky, or a campfire can be created.

[0128] <Components of a shared energy storage system> Next, we will explain in detail the shared power generation equipment 51, shared battery storage unit 53, shared distribution unit 55, outlet 57, power generation meter 59, power receiving meter 61, power supply meter 63, and shared power management device 65 of the shared energy storage facility 50.

[0129] <<Shared power generation equipment>> The shared power generator 51 is connected to the shared power distribution unit 55 via a power generation meter 59. The shared power generator 51 generates electricity from solar energy and outputs that electricity to the shared power distribution unit 55.

[0130] The shared power generation system 51 is a solar power generation system that includes solar panels 52, a junction box, and a power conditioner. The solar panels 52 are installed on the roof of facility 3. The solar panels 52 are connected to the junction box. The junction box has current collectors and other components and collects electricity generated by each block of solar panels 52. The junction box is connected to the power conditioner. The power conditioner has a DC-AC converter and other components and converts the DC power output from the junction box into AC power, and outputs the AC power to the shared distribution unit 55. The power conditioner is connected to the shared distribution unit 55 via a power generation meter 59.

[0131] Furthermore, the shared power generation device 51 may be a wind power generation device or a hydroelectric power generation device instead of a solar power generation device equipped with solar panels 52. In other words, the shared power generation device 51 is not limited to a solar power generation device as long as it is a renewable energy power generation device that converts natural energy into electricity. In addition, the shared power generation device 51 may be a combination of multiple types of renewable energy power generation devices.

[0132] Since the shared energy storage facility 50 has a shared power generator 51, the shared battery 53 of the shared energy storage facility 50 is charged by the shared power generator 51, and the electrical equipment 20 of each building 2 can receive part or all of the power generated by the shared power generator 51.

[0133] <<Shared storage device>> The shared power storage unit 53 is connected to the shared power distribution unit 55. When charging, the shared power storage unit 53 converts the power output from the shared power distribution unit 55 into chemical energy and stores it as chemical energy. When discharging, the shared power storage unit 53 converts the stored chemical energy into electricity and outputs that electricity to the shared power distribution unit 55.

[0134] The shared power storage unit 53 includes a power conditioner, a charge / discharge circuit, a measurement circuit, and a battery. The power conditioner includes an AC / DC converter and a DC / AC converter, and converts the AC power output from the shared distribution unit 55 into DC power and outputs it to the charge / discharge circuit. It also converts the DC power discharged from the battery via the charge / discharge circuit into AC power and outputs it to the shared distribution unit 55. During charging, the charge / discharge circuit charges the battery with the DC power output from the power conditioner, and during discharging, it releases the power stored in the battery to the power conditioner. The measurement circuit measures the remaining charge of the battery or its percentage and outputs the measured value of the remaining charge or its percentage to the shared power management device 65 described later.

[0135] The charging capacity, rated charging power, and rated discharge power of the shared battery 53 are sufficiently larger than the charging capacity, rated charging power, and rated discharge power of the battery 29, respectively. The capacity, rated charging power, and rated discharge power are designed based on the total number of residents belonging to the community. By determining the charging capacity of the shared energy storage unit 53 based on the total number of residents belonging to the community, it is possible to store an amount of electricity appropriate for the total number of people in the shared energy storage unit 53 on a regular basis.

[0136] <<Electrical outlet>> Outlet 57 is connected to a shared power distribution unit 55. When an electrical appliance is plugged into outlet 57, the appliance is powered by the shared power generator 51 or shared battery storage unit 53 via the shared power distribution unit 55. In the event of a disaster, power outage, or failure of electrical equipment 20, residents may use outlet 57 to operate their electrical appliances in their own building 2. However, who can connect electrical appliances to outlet 57 is restricted to residents belonging to the community, according to rules and regulations.

[0137] <<Shared power distribution device>> The shared power distribution unit 55 is connected to the shared power generation device 51 via the power generation meter 59. The shared power distribution unit 55 is connected to the shared battery storage unit 53. The shared power distribution unit 55 is connected to the private line 10 via the power receiving meter 61 and the power supply meter 63.

[0138] The shared power distribution unit 55 distributes power between the private power line 10, the shared power generator 51, and the shared battery storage unit 53. The power distribution by the shared power distribution unit 55 will be explained below.

[0139] When the power transmission line 8 is not interrupted, the second distribution power, which is the second distribution ratio of the power generated by the private power generators 27 in each building 2, is output from the distribution unit 31 in each building 2 to the private line 10. As a result, the shared distribution unit 55 of facility 3 receives power from the distribution unit 31 in each building 2 through the private line 10 and outputs that power to the shared battery 53. This charges the shared battery 53. At this time, if the shared power generator 51 is generating power, the shared distribution unit 55 outputs the power generated by the shared power generator 51 to the shared battery 53.

[0140] When the power transmission line 8 experiences a power outage, no power is supplied from the power transmission line 8 to the loads in building 2. As a result, the total power output from the distribution units 31 in each building 2 to the private line 10 tends to be lower than the total power that can be received from the private line 10 to the distribution units 31 in each building 2. If the total power supplied from the distribution units 31 in each building 2 to the private line 10 is lower than the total power that can be received from the private line 10 to the distribution units 31 in each building 2, the shared distribution unit 55 of facility 3 discharges the shared battery 53 and receives the discharged power, then outputs the discharged power from the shared battery 53 to the private line 10. In this case, if the shared power generator 51 is generating power, the shared distribution unit 55 also outputs the power generated by the shared power generator 51 to the private line 10.

[0141] When the power transmission line 8 experiences a power outage, if the total power output from the distribution units 31 of each building 2 to the private line 10 is higher than the total power that can be received from the private line 10 to the distribution units 31 of each building 2, and there is also a surplus of power consumed by the streetlights 4, the shared distribution unit 55 of facility 3 receives the surplus power from the private line 10 and outputs that surplus power to the shared battery 53. In this case, if the shared power generator 51 is generating power, the shared distribution unit 55 also outputs the power generated by the shared power generator 51 to the shared battery 53. As a result, the shared battery 53 is charged.

[0142] <<Electricity meter>> The power generation meter 59 measures the amount of power generated by the shared power generation device 51 and outputs the measured value to the shared power management device 65, in particular to the calculation processing device 67. The amount of power generated measured by the power generation meter 59 may be cumulative from the start of measurement by the power generation meter 59, or it may be cumulative from the time of reset by resetting to zero at predetermined intervals (for example, every month).

[0143] <<Electricity meter>> The power receiving meter 61 measures the amount of power received from the private line 10 to the shared distribution unit 55, and outputs the measured value to the shared power management device 65, in particular to the calculation processing unit 67. Power reception The amount of electricity may be cumulative from the start of measurement by the power consumption meter 61, or it may be cumulative from the time of reset by resetting it to zero at predetermined intervals (for example, every month).

[0144] <<Power supply energy meter>> The power supply meter 63 measures the amount of power supplied from the shared distribution unit 55 to the private line 10, and outputs the measured value to the shared power management device 65, in particular to the processing unit 67. Power supply The amount of electricity may be cumulative from the start of measurement by the power supply meter 63, or it may be cumulative from the time of reset by resetting it to zero at predetermined intervals (for example, every month).

[0145] <<Shared power management device>> The shared power management device 65 is a stationary or portable computer system. The shared power management device 65 is located within facility 3. The shared power management device 65 has a processing unit 67, a display unit 69, and an input unit 71.

[0146] The display unit 69 is a matrix display, a segment display, or a combination thereof. The display unit 69 displays an image according to the video signal input from the processing unit 67.

[0147] The input unit 71 has one or more input devices selected from a keyboard, pointing device, push button, and switch. When operated by an administrator or the like, the input unit 71 outputs a signal corresponding to the operation to the arithmetic processing unit 67.

[0148] The arithmetic processing unit 67 stores a program. The functions of the arithmetic processing unit 67 of this disclosure are realized by the execution of the program by the arithmetic processing unit 67.

[0149] The arithmetic processing unit 67 is connected to the internet. The arithmetic processing unit 67 communicates with the central management unit 90 via the internet. The arithmetic processing unit 67 is configured with management account information related to the administrator's account. The arithmetic processing unit 67 uses the management account information to log in to the management system operated by the central management unit 90.

[0150] The arithmetic processing unit 67 is connected to a local area network that covers the local area where the power network system 1 is built. The arithmetic processing unit 67 communicates with the arithmetic processing units 45 in each building 2 via the Internet or the local area network. The arithmetic processing unit 67 aggregates the data received from each arithmetic processing unit 45.

[0151] The arithmetic processing unit 67 is connected to the shared capacitor 53 by a signal line and manages the remaining charge or percentage of the charge in the shared capacitor 53.

[0152] The processing unit 67 manages the amount of power generated, power received, and power supplied, which are measured by the power generation meter 59, the power reception meter 61, and the power supply meter 63, respectively.

[0153] The arithmetic processing unit 67 is connected to the shared power distribution unit 55 by signal lines and manages the generated power, received power, and supplied power. Here, generated power refers to the power generated by the shared power generation device 51. Received power refers to the power received from the private line 10 to the shared power distribution unit 55. Supply power refers to the power supplied from the shared power distribution unit 55 to the private line 10.

[0154] <<<Examples of management performed by the arithmetic processing unit of the shared power management device>>> The management of power, energy, remaining charge, detected values, measured values, and calculation results by the arithmetic processing unit 67 includes, for example, the following (1) to (5).

[0155] (1) Acquisition The arithmetic processing unit 67 detects the generated power, received power, and supplied power through the shared power distribution unit 55 and acquires their detected values. The arithmetic processing unit 67 also acquires measured values ​​of generated power, received power, and supplied power from the generated power meter 59, the received power meter 61, and the supplied power meter 63, respectively. The arithmetic processing unit 67 acquires measured values ​​of the remaining charge or percentage of the charge of the shared battery 53 from the shared battery 53.

[0156] (2) Aggregation The arithmetic processing unit 67 performs various calculations using at least one detected value from the generated power, received power, and supplied power, and at least one measured value from the generated power amount, received power amount, and supplied power amount. For example, the arithmetic processing unit 67 calculates the generated power amount for a predetermined period (e.g., one month) at predetermined intervals (e.g., one month). The arithmetic processing unit 67 also calculates the received power amount for a predetermined period (e.g., one month) at predetermined intervals (e.g., one month). The arithmetic processing unit 67 also calculates the supplied power amount for a predetermined period (e.g., one month) at predetermined intervals (e.g., one month).

[0157] (3)Memory The arithmetic processing unit 67 stores the detected and measured values ​​acquired as described in (1) above in chronological order. The arithmetic processing unit 67 also stores the calculation results as described in (2) above in chronological order.

[0158] (4)Display The arithmetic processing unit 67 displays at least one of the detected value and measured value acquired as described in (1) above on the display unit 69. The arithmetic processing unit 67 displays at least one of the calculation results as described in (2) above on the display unit 69.

[0159] (5) Send The arithmetic processing unit 67 transmits the detected and measured values ​​acquired as described in (1) above to the arithmetic processing unit 45 of each building 2 and the central control unit 90 via the Internet or local area network. The arithmetic processing unit 67 transmits the calculation results as described in (2) above to the arithmetic processing unit 45 of each building 2 and the central control unit 90 via the Internet or local area network.

[0160] <<<Example of aggregation performed by the arithmetic processing unit of the shared power management device>>> As explained in the “Example of management performed by the processing unit of the individual power management device” above, the processing unit 45 of each electrical equipment 20 transmits the detected value of self-generated power to the processing unit 67 of the shared power management device 65. The processing unit 67 receives the detected value of self-generated power transmitted by each processing unit 45 and displays the detected value of self-generated power for each building 2, electrical equipment 50, or account on the display unit 69.

[0161] Similarly, the arithmetic processing unit 67 receives detected values ​​of forward power flow, reverse power flow, power supplied, power received, charging power, discharge power, critical load power consumption, general load power consumption, and total power consumption from each arithmetic processing unit 45, and displays the detected values ​​of forward power flow, reverse power flow, power supplied, power received, charging power, discharge power, critical load power consumption, general load power consumption, and total power consumption for each building 2, electrical equipment 50, or account on the display unit 69. Similarly, the arithmetic processing unit 67 receives the amount of generated power, forward power flow, reverse power flow, power supplied, and power received from each arithmetic processing unit 45. The system receives the measured values ​​of the power flow and displays the measured values ​​of the generated power, forward power flow, reverse power flow, supplied power, and supplied power for each building 2, electrical equipment 50, or account on the display unit 69. Similarly, the arithmetic processing unit 67 receives the measured values ​​of the remaining charge or its percentage from each arithmetic processing unit 45 and displays the measured values ​​of the remaining charge or its percentage for each building 2, electrical equipment 50, or account on the display unit 69.

[0162] Therefore, while at facility 3, administrators can monitor the self-generated power, forward power flow, reverse power flow, shared power, received power, charging power, discharge power, critical load power consumption, general load power consumption, total power consumption, generated power, forward power flow, reverse power flow, shared power, received power, and remaining power received for each building 2.

[0163] The arithmetic processing unit 67 receives calculation results from each arithmetic processing unit 45 and displays the calculation results for each building 2, electrical equipment 50, or account on the display unit 69. The calculation results include, as described above, the real-time self-consumption rate, the self-consumption rate over a period, the amount of forward power flow and the amount of electricity purchased for a predetermined period, the amount of reverse power flow and the amount of electricity sold for a predetermined period, the amount of electricity exchanged, the amount of electricity exchanged, and the points of exchange for a predetermined period, and the amount of electricity received, the amount of electricity received, and the points of exchange for a predetermined period.

[0164] <Functions of the Central Control System> Next, the functions of the central control device 90 will be explained in detail. The functions of the central control device 90 described below are realized by the central control device 90 executing programs stored in it.

[0165] <<Management System Operation>> The central control unit 90 operates the management system.

[0166] <<Account Management>> The central control unit 90 manages accounts for each residential group in the management system. When the processing unit 45 of the individual power management unit 43 accesses the central control unit 90 and logs into the management system based on valid account information, the central control unit 90 permits the login to the management system.

[0167] <<Management of Private Information>> When a resident inputs private information using the input unit 49, the processing unit 45 transmits the private information to the central management unit 90, and the central management unit 90 stores the private information on the management system, linking it to an account.

[0168] <<Management of electricity and energy consumption for each building>> The central management device 90 receives detected values ​​for self-generated power, forward power flow, reverse power flow, power exchanged, power received, charging power, discharging power, critical load power consumption, general load power consumption, and total power consumption from each processing unit 45, and stores these detected values ​​in chronological order, linked to accounts.

[0169] The central control unit 90 receives measured values ​​of generated power, forward power flow, reverse power flow, supplied power, and received power from each processing unit 45, and stores these measured values ​​in chronological order, linked to an account.

[0170] The central management device 90 receives measured values ​​of the remaining charge or its percentage from each processing unit 45, and stores these measured values ​​of the remaining charge or its percentage in chronological order, linked to an account.

[0171] The central control unit 90 receives the calculation results from each processing unit 45 and assigns the calculation results to an account. The data is stored chronologically, linked to the data point. The calculation results include real-time self-consumption rate, self-consumption rate over a period, forward power flow amount and purchase amount for a specified period, reverse power flow amount and sale amount for a specified period, amount of power exchanged, amount of power exchanged, and points exchanged for a specified period, and amount of power received, amount of power received, and points received for a specified period.

[0172] The central management device 90 receives the energy storage contribution, energy storage contribution amount, and energy storage contribution points from each processing unit 45, and stores the energy storage contribution, energy storage contribution amount, and energy storage contribution points in association with an account.

[0173] The central management device 90 receives detected values ​​of generated power, received power, and supplied power from the arithmetic processing unit 67 of the shared power management device 65, and stores these detected values ​​in chronological order, linked to a management account.

[0174] The central management device 90 receives measured values ​​of generated power, received power, and supplied power from the arithmetic processing unit 67 of the shared power management device 65, and stores these measured values ​​in chronological order, linked to a management account.

[0175] The central management device 90 receives measured values ​​of the remaining charge or its percentage from the calculation processing unit 67 of the shared power management device 65, and stores these measured values ​​of the remaining charge or its percentage in chronological order, linked to a management account.

[0176] The central management device 90 receives calculation results from the processing unit 67 and stores the calculation results in chronological order, linking them to a management account. The calculation results include the amount of electricity generated, the amount of electricity received, and the amount of electricity supplied for a predetermined period (e.g., one month).

[0177] <<Classification>> The central management device 90 classifies accounts based on the private information associated with each account, using common private information. For example, the central management device 90 classifies accounts based on the private information associated with each account, using common family size (instead of family size, this may be family structure, age, occupation, or lifestyle). The total number of accounts belonging to a common category through this classification is called the number of accounts by category.

[0178] <<Ranking>> The central management device 90 ranks accounts belonging to a common category based on the classification described above, with respect to total power consumption, real-time self-consumption rate, periodic self-consumption rate, amount of electricity exchanged, amount of electricity exchanged, points exchanged, energy storage contribution, energy storage contribution amount, or energy storage contribution points. The ranking of accounts in this manner is called the category rank. The category rank can be in ascending order, descending order, or both.

[0179] The central management device 90 stores the classification rank and the total number of classification accounts, associating them with each account. The central management device 90 also transmits the classification rank and the total number of classification accounts associated with each account to the processing unit 45 that logged in with that account.

[0180] The central management device 90 ranks all accounts based on total power consumption, real-time self-consumption rate, periodic self-consumption rate, amount of electricity exchanged, amount of electricity exchanged, points exchanged, energy storage contribution, energy storage contribution amount, or energy storage contribution points. The ranking of accounts in this manner is called the overall ranking. The overall ranking can be in ascending order, descending order, or both.

[0181] The central management device 90 stores the overall ranking and the total number of accounts, linking them to each account. Furthermore, the central management device 90 transmits the overall ranking and the total number of accounts associated with the account to the computing device 45 that logged in with that account.

[0182] Then, as explained in the “rank display” section above, the arithmetic processing unit 45 receives the category rank, the total number of accounts in each category, the overall rank, and the total number of accounts, and displays the category rank, the total number of accounts in each category, the overall rank, and the total number of accounts on the display unit 47.

[0183] Residents who view their total power consumption in terms of category ranking or overall ranking will be more likely to make efforts to reduce their total power consumption compared to residents of other buildings.

[0184] Residents who view their category ranking or overall ranking for real-time or time-based self-consumption rates will be more inclined to reduce their self-consumption rates than residents of other buildings.

[0185] Residents who view their ranking by category or overall ranking regarding the amount of electricity exchanged, the amount exchanged, or the points exchanged will be more inclined to increase their amount of electricity exchanged compared to residents of other buildings 2.

[0186] Residents who view their ranking in terms of energy storage contribution, energy storage contribution amount, or energy storage contribution points, or their overall ranking, will be more inclined to contribute to the energy storage of the shared energy storage facility 50 than residents of other buildings 2.

[0187] In the case of ranking by category, the private information of accounts and residents belonging to that category is shared, which increases the fairness of the ranking.

[0188] <<Status update within the same category>> The central management device 90 transmits the total power consumption, real-time self-consumption rate, periodic self-consumption rate, amount of electricity exchanged, amount of electricity exchanged, amount of electricity exchanged, amount of electricity exchanged, energy storage contribution, or energy storage contribution points, associated with all accounts belonging to a common category according to the classification described above, to each arithmetic processing unit 45 that is logged in with these accounts.

[0189] The arithmetic processing unit 45 then receives the total power consumption, real-time self-consumption rate, period-based self-consumption rate, amount of electricity exchanged, amount of electricity exchanged, amount of electricity exchanged, points of electricity exchanged, energy storage contribution, amount of energy storage contribution, or points of energy storage contribution for all accounts belonging to the common category, and displays the total power consumption, real-time self-consumption rate, period-based self-consumption rate, amount of electricity exchanged, amount of electricity exchanged, points of electricity exchanged, energy storage contribution, amount of energy storage contribution, or points of energy storage contribution for each account on the display unit 47. Such a display stimulates a competitive spirit among residents. [Explanation of Symbols]

[0190] 1. Power Network System 2 buildings 4 Streetlights 8 Power transmission lines 10 Private lines 21 General electrical wiring network 23. Important electrical wiring networks 25 Small power generator 27. Private power generation equipment 29. Energy storage 31 Distribution Unit 33. Electricity generation meter 35 Forward flow energy meter 37 Reverse power flow energy meter 39 Flexible power meter 41 Accommodated electricity meter 43 Individual power management device 51 Shared power generation equipment 53 Shared capacitor 55 Shared power distribution device 57 outlets 59. Electricity generation meter 61. Electricity meter 63 Power supply energy meter 65 Shared power management device 90 Central management device

Claims

1. A power network system built in a local area, Multiple electrical facilities are installed in each of the multiple buildings constructed in the aforementioned area, receiving power from the commercial grid power supply via transmission lines, and enabling the exchange of power between them via private lines laid throughout the aforementioned area. A shared energy storage facility is provided in a facility to be constructed in the aforementioned area, which receives power from the private power line and stores energy. Each of the aforementioned electrical equipment is, A self-generation device that generates electricity from natural energy sources, A distribution unit capable of distributing the aforementioned self-generated power to the electrical equipment and the aforementioned transmission lines, and capable of detecting power outages in the aforementioned transmission lines, A power exchange meter for measuring the amount of power exchanged from the distribution unit to the private line, A power meter for measuring the amount of power received from the private line to the distribution unit, When the distribution unit detects a power outage in the transmission line, the individual power management device acquires the measured value of the power meter at that time as the power amount supplied at the start of the power outage, compares the difference obtained by subtracting the power amount supplied at the start of the power outage from the measured value of the power meter thereafter with a predetermined threshold, and disconnects the distribution unit from the private line when the difference exceeds the predetermined threshold, It has, The individual power management device determines the predetermined threshold based on the amount of shared power over a predetermined period measured by the shared power meter before the power distribution device detects a power outage in the transmission line. A power network system characterized by the following features.

2. A power network system according to claim 1, Furthermore, equipped with a central control system, Each of the individual power management devices transmits the amount of shared power measured by the shared power meter to the central management device before the power distribution device detects a power outage in the transmission line. The central management device ranks the accounts that each of the individual power management devices has logged into the central management device based on the amount of power exchanged transmitted by each of the individual power management devices. A power network system characterized by the following features.

3. A power network system according to claim 2, The central management device transmits to each of the individual power management devices the ranking assigned to the account that logged into the central management device. The individual power management device displays the received ranking. A power network system characterized by the following features.

4. A power network system according to claim 2 or 3, The central management device classifies the accounts based on the private information associated with those accounts using common private information, and then ranks the accounts belonging to the same category based on the amount of power exchanged transmitted by each of the individual power management devices. A power network system characterized by the following features.

5. A power network system according to claim 4, The central management device transmits to the individual power management devices the classification rank assigned to the accounts belonging to the common category according to the classification. The individual power management device displays the received classification ranking. A power network system characterized by the following features.

6. A power network system according to any one of claims 2 to 5, Each of the individual power management devices calculates the self-consumption rate based on the amount of shared power measured by the shared power meter before the power distribution detects a power outage in the transmission line, and transmits the self-consumption rate to the central management device. The central management device ranks the accounts that each of the individual power management devices has logged into the central management device with respect to the self-consumption rates transmitted by each of the individual power management devices. A power network system characterized by the following features.

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