JP7236258B2 - Power management method, power management device and display device - Google Patents

Description

The present invention relates to a power management method, a power management device and a display device.

The market is shifting from gasoline or hybrid vehicles to electric vehicles such as plug-in hybrid vehicles (PHEV) or electric vehicles (EV). Patent Literature 1 discloses a V2H (Vehicle to Home) device that connects such an electric vehicle to electrical equipment used in a house and supplies power to the electrical equipment in the house as an emergency power supply in the event of a disaster or the like. ing.

On the other hand, the power distribution service from automobiles to the power system is not limited to V2H, and is a general term for V2B (Vehicle to Building) or V2G (Vehicle to Grid), which is a service for general households and larger consumers and power grids. It is expanding to the V2X system (grid interconnection system).

JP 2018-61432 A

There are great expectations for supplying electric power from electric vehicles to loads such as electric power systems in the event of a disaster. However, no consideration is given to the power management of the entire system when a grid-connected system is installed at multiple bases.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a power management method, a power management device, and a display device capable of realizing efficient power management of a plurality of grid-connected systems. do.

A power management method according to the present invention is a power management method for a grid-connected system that is installed at each of a plurality of bases and includes a stationary storage battery and a charge/discharge stand, wherein the grid-connected system is installed at each base. Supply information about supply is acquired, and the acquired supply information is output to a predetermined device.

A power management device according to the present invention is a power management device for a grid-connected system that is installed at each of a plurality of bases and includes a stationary storage battery and a charging/discharging stand, wherein the power of each base where the grid-connected system is installed is An acquisition unit that acquires supply information about supply, and an output unit that outputs the supply information acquired by the acquisition unit to a predetermined device.

A display device according to the present invention is a display device for displaying information of a base where a grid-connected system including a stationary storage battery and a charge/discharge stand is installed, and at least one of advertisement information and supply information regarding power supply at the base. is displayed on the display screen.

According to the present invention, efficient power management of a plurality of grid-connected systems can be realized.

It is a mimetic diagram showing an example of composition of a power management system of this embodiment. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows an example of an external appearance structure of the grid connection system of this Embodiment. 1 is a schematic diagram showing an example of a circuit configuration of a grid interconnection system according to an embodiment; FIG. It is a block diagram which shows an example of a structure of a server. It is a block diagram which shows an example of a structure of base information DB. It is a schematic diagram which shows an example of the supply information which a display apparatus displays at the time of normal. It is a schematic diagram which shows an example of the supply information which a display apparatus displays at the time of normal. It is a schematic diagram which shows an example of the supply information which a display apparatus displays in an emergency. It is a schematic diagram which shows the 1st example of the supply information which a display apparatus displays in an emergency. It is a schematic diagram which shows the 2nd example of the supply information which a display apparatus displays in an emergency. 6 is a flowchart illustrating an example of a power management processing procedure by a server; 6 is a flowchart illustrating an example of a power management processing procedure by a server;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described based on the drawings showing its embodiments. FIG. 1 is a schematic diagram showing an example of the configuration of a power management system according to this embodiment. The power management system includes a server 200 as a power management device and a display device 210 as a management display device connected to the server 200 . The server 200 is connected to a plurality of grid interconnection systems 100a-100f via a communication network 1 such as the Internet. The grid interconnection systems 100a to 100f are installed at bases A to F, respectively. In addition, although six bases are illustrated in the example of FIG. 1, the number of bases is not limited to six. Moreover, you may install several grid connection systems in one base. The power management system and power management method of the present embodiment efficiently manage the power of the plurality of grid interconnection systems 100a to 100f as a whole.

Next, a system interconnection system will be described.

FIG. 2 is a schematic diagram showing an example of the external configuration of the interconnection system 100 of this embodiment. The grid connection system 100 includes charge/discharge stands S1 to S5 installed in a parking lot or the like, and a grid connection unit. Electric vehicles V1 to V5 can be connected to the charging/discharging stands S1 to S5. The grid interconnection unit includes a storage battery board 10 that houses a storage battery (not shown), a power conversion board 20 that houses a storage battery PCS (Power Conditioning System) (not shown), and a control device (not shown) that controls the grid interconnection system. and a display device 40 having a display screen 41 . In the example of FIG. 2, there are parking spaces for five vehicles, but the number of charging/discharging stands is not limited to five.

An electric vehicle (also referred to as an electric vehicle) is a plug-in hybrid vehicle (PHEV) or an electric vehicle (EV), also referred to herein as a PHEV or EV. The charging/discharging stands S1 to S5 can charge and discharge a battery (in-vehicle storage battery) mounted on the electric vehicle. The storage battery PCS housed in the power conversion board 20 can convert power in both directions, from alternating current to direct current and from direct current to alternating current. It can be carried out. When the power system is normal, the control device housed in the interconnection board 30 performs system interconnection operation between the power system, the storage battery PCS, and the charging/discharging stands S1 to S5, and when the power system is in an emergency (during a disaster) , the storage battery PCS and the charging/discharging stands S1 to S5 can be operated independently.

In an emergency, the battery power can be supplied to the loads by the battery PCS. Also, in an emergency, the power of the battery in the EV/PHEV can be supplied to the load via the charging/discharging stand to which the EV/PHEV is connected.

The display device 40 can display on the display screen 41 at least one of the advertisement information and the supply information regarding the power supply of the base. The supply information regarding power supply can include both normal times and emergency times such as disasters. For example, during normal times, both advertising information and serving information, or only advertising information can be displayed. Also, in an emergency, only supply information can be displayed. In the case of an emergency, the supply information can be, for example, power information that can be supplied to grid-connected systems at other bases. Details of the location information displayed by the display device 40 will be described later. In addition, in the example of FIG. 2, the display device 40 is attached adjacent to the storage battery board 10, but the mounting location of the display device 40 is not limited to the example of FIG. For example, it may be installed in a place where many people gather in the vicinity of the base separately from the grid-connected unit.

FIG. 3 is a schematic diagram showing an example of the circuit configuration of the grid interconnection system 100 of this embodiment. The storage battery board 10 accommodates a storage battery (stationary storage battery) 11, a control device (not shown), a cooling device, a heater, and the like. The power conversion board 20 accommodates a storage battery PCS21, a control device and a cooling device (not shown), and the like. The interconnection board 30 includes a remote IO 31, a VCB 32, a transformer 33, a UVR 34, a voltage transformer 35, etc., in addition to the control device 36. FIG.

The interconnection board 30 includes terminal blocks 101 and 102 and breakers 103 and 111-115. The terminal block 101 is provided on the electric line (high voltage power line) on the high voltage lead-in side. That is, the terminal block 101 is connected to a power line from the secondary side of the step-down transformer 85 of the electric power system and a power line from the primary side of the step-down transformer 86 connected to a general load. Here, the general load includes, for example, electrical equipment that is relatively unaffected even if power is interrupted in the event of a disaster.

The terminal block 102 is provided on the electric line (high-voltage power line) on the high-voltage lead side. That is, the terminal block 102 is connected to the power line from the primary side of the step-down transformer 87 connected to the important load. Here, important loads are important loads that need to be supplied with power continuously even in the event of a disaster, such as emergency elevators, electrical equipment that requires continuous operation, building lighting and air conditioning equipment, etc. included.

One electrode of the VCB 32 , the UVR 34 and the potential transformer 35 are connected to the terminal block 101 via the disconnector 37 . The voltage transformer 35 will be described later. The VCB 32 is a vacuum circuit breaker in which electrodes are housed in a high-vacuum container, and the material that forms the arc discharge that occurs between the electrodes when the current is interrupted is diffused in the high-vacuum to extinguish the arc. It is a vessel.

The UVR 34 is an undervoltage relay and can detect abnormalities such as short circuits and power outages on the power system side. When the UVR 34 detects an abnormality, it outputs a control signal to the VCB 32 to cut off the electric circuit of the VCB 32 .

A power monitoring unit 80 that monitors power on the primary side of the step-down transformer 85 is provided in a building that uses a grid interconnection system to manage power demand. Note that the power monitoring unit 80 is not necessarily essential. Further, when the step-down transformer 85 is not installed, the locations monitored by the power monitoring unit 80 are appropriately set. Power monitoring unit 80 includes OVGR 81 , RPR/UPR 82 and power sensor 83 . The OVGR 81 is a ground fault overvoltage relay that continuously detects ground faults in the power system. The RPR/UPR 82 is a reverse power relay and underpower relay, and can detect abnormalities such as reverse power flow to the power system side and short-circuit accidents. Also when an abnormality is detected in the OVGR 81 and the RPR/UPR 82, the electrical circuit of the VCB 32 is cut off.

The remote IO 31 is an AD converter that converts the power (analog value) detected by the power sensor 83 into a digital value, and outputs the converted power (digital value) to the control device 36 .

A transformer 33 is connected to the other electrode of the VCB 32 via an electric circuit. Transformer 33 has a first winding, a second winding connected to breaker 103 via an electric circuit, and a third winding connected to breakers 111-115 via an electric circuit.

A storage battery PCS21 is connected to the breaker 103 . The storage battery PCS21 is capable of bi-directionally converting power from alternating current to direct current and from direct current to alternating current, and is capable of charging and discharging the storage battery 11 .

Power lines from charge/discharge stations S1 to S5 are connected to the breakers 111 to 115, respectively. The charging/discharging stations S1 to S5 are equipped with a conversion circuit capable of bi-directionally converting power from AC to DC and from DC to AC, and charge and discharge the batteries installed in the EV/PHEV (V1 to V5). be able to.

For example, when the power system is normal and the charging mode is set, the control device 36 can charge the EV/PHEV (V1-V5) by the charging/discharging stations S1-S5. As a result, the grid interconnection system 100 can be used as an EV/PHEV rapid charging/discharging stand.

Also, when the power system is normal, power is supplied from the commercial power source to the important loads. Also, when the power system is normal, power is supplied from the commercial power source to the general load.

By dividing the load into two systems, a general load and a critical load, the power to be supplied in the event of a disaster, which will be described later, is minimized, and power is continuously supplied to the critical load, and the time during which power can be supplied to the critical load. can be lengthened.

In addition, the control device 36 opens the electrodes of the VCB 32 to disconnect the commercial power supply from the important load when the power system is in an emergency (for example, in the event of a disaster such as an earthquake). In this state, by supplying electric power from the charging/discharging stations S1 to S5 or the storage battery PCS21, self-sustained operation by the control device 36 can be enabled.

The control device 36 can supply power to important loads from at least one of the charging/discharging stations S1 to S5 or the storage battery PCS21 when the power system is in an emergency.

Further, the control device 36 has a communication function with the server 200 and can output information to be displayed on the display screen 41 of the display device 40 . The display device 40 includes a control unit (not shown) composed of a CPU, ROM, RAM, etc., and can display required information on a display screen 41 under the control of the control device 36 .

FIG. 4 is a block diagram showing an example of the configuration of the server 200. As shown in FIG. The server 200 includes a control unit 201 that controls the server 200 as a whole, a communication unit 202 , a storage unit 203 , an input unit 204 and an output unit 205 . The control unit 201 can be configured with a CPU, a ROM, a RAM, and the like. The control unit 201 can control display processing by the display device 210 .

The communication unit 202 can transmit and receive information to and from grid interconnection systems installed at each site. More specifically, the communication section 202 has a communication function with the control device 36 .

The storage unit 203 can store the processing results of each process executed by the server 200 . The storage unit 203 includes a base information DB 206 and can store base information of each base received via the communication unit 202 .

FIG. 5 is a schematic diagram showing an example of the configuration of the base information DB 206. As shown in FIG. The base information DB 206 can store base information for each base. The base information includes, for example, suppliable power amount, charging status, demand information, etc. when the grid interconnection system 100 is in the normal mode. The charging status indicates the charging status of the EV/PHEV (V1 to V5) connected to the stationary storage battery and the charging/discharging station. Further, the base information includes, for example, the number of standby EV/PHEVs, the remaining amount of suppliable power, the power consumption of evacuation centers, the number of evacuees, and the like when the grid interconnection system 100 is in the emergency mode. The number of backup EVs/PHEVs is determined by specifying the number of EVs/PHEVs connected to the charging/discharging station whose state of charge is equal to or higher than a predetermined value (for example, SOC is 95% or higher) at the charging/discharging station. 36 may transmit the specified number of standby machines to the server 200 . In addition, the EV/PHEV has a function of acquiring position information of its own vehicle, and the EV/PHEV transmits the acquired position information to the server 200. Based on the location information and the map information, the number of EVs/PHEVs existing within a required range from the base may be set as the standby number. In this case, when the EV/PHEV transmits its own location information, the state of charge of the EV/PHEV may be acquired and the acquired state of charge may be transmitted to the server 200 . The remaining amount of power that can be supplied indicates the remaining amount of power that can be supplied by the EV/PHEV (V1 to V5) connected to the stationary storage battery and the charging/discharging station. Note that the location information is an example, and is not limited to the example in FIG. 5 .

The input unit 204 can receive an operation by a person in charge of power management.

The output unit 205 can output information to be displayed on the display device 210 under the control of the control unit 201 .

Next, display of supply information regarding power supply by the power management system of the present embodiment will be described. First, an example of display in normal times will be described.

FIG. 6 is a schematic diagram showing an example of supply information normally displayed by the display device 210. As shown in FIG. The display screen of the display device 210 can be of a relatively large size because information on a plurality of bases is collectively displayed at the same time. The display screen includes an operation mode area 221, a base area 220 for displaying information on each base in a row, and a selection area 223 for selecting a desired base from among the bases.

The operating mode area 221 displays whether the operating mode is the normal mode or the emergency mode. In the example of FIG. 6, the normal mode is displayed. The base area 220 can display the amount of power that can be supplied at each base. Also, in the base area 220, a wide-area overall map including each base can be displayed.

That is, the control unit 201 acquires supply information regarding the power supply of each site from each of the control devices 36 of the interconnection system of each site, and outputs the acquired supply information to the display device 210 . Supply information can include both normal and emergency situations, which will be described later. The supply information can be the amount of power that can be supplied, as shown in FIG.

With the above configuration, it is possible to obtain information for supplying power from other sites to a site that is short of power, and to realize efficient power management of a plurality of grid-connected systems. can.

In addition to the display device 210, or instead of the display device 210, the control unit 201 may output the supply information to a device of a person in charge of power management (for example, a mobile terminal device, a personal computer, etc.). can.

Further, by selecting a desired base (bases A to F in the example of FIG. 6) in the selection area 223, base information of the selected base can be displayed.

FIG. 7 is a schematic diagram showing an example of supply information normally displayed by the display device 40. As shown in FIG. A display screen 41 of the display device 40 includes an advertisement space 301 displaying advertisement information, a base information area 302 displaying base information specific to a base, and the like. The advertising space 301 appropriately displays information of interest to many users, such as information on nearby commercial facilities, shopping information, event information, and weather information.

The base information area 302 can display the charging status 303, the demand information 304, and the like. The charging status can display, for example, the charging status of the stationary storage battery (70% in the example of FIG. 7) and the charging status of EV/PHEV (V1 to V5) at each charging/discharging station S1 to S5. In addition, in the example of FIG. 7, since the EV/PHEV (V5) is not connected to the charging/discharging station S5, the charging status is 0%. Further, whether the EV/PHEV is in a connected state or in a non-connected state can be displayed in different display modes, for example. In the example of FIG. 7, connection and non-connection can be distinguished by contrast or different colors.

The demand information 304 can display the power demand for the entire site.

As described above, the display device 40 can display the charging status of the stationary storage battery and the charging status of the EV/PHEV connected to the charging/discharging station on the display screen 41 . This makes it possible to grasp the charging status at the base.

The display device 40 can display the charging/discharging stand to which the EV/PHEV is connected and the charging/discharging stand to which the EV/PHEV is not connected in different display modes. For example, a charging/discharging station connected to an EV/PHEV can be displayed brightly, and a charging/discharging station not connected can be displayed dark. This makes it possible to easily grasp the EV/PHEV connection state of each of the plurality of charging/discharging stations.

Further, by selecting one of the desired bases A to F in the selection area 223 illustrated in FIG. 6, the base information shown in FIG. 7 for the selected base can be displayed on the display device 210. That is, the control unit 201 can display the base information of the selected base on the display device 210 when receiving an operation to select one base from among the bases.

Next, a display example in an emergency will be described.

FIG. 8 is a schematic diagram showing an example of supply information displayed by the display device 210 in an emergency. The operation mode area 221 displays that it is an emergency mode. Specifically, the control unit 201 acquires operation mode information indicating whether the interconnection system is in the normal mode or the emergency mode from the control device 36, and can switch the display mode according to the acquired operation mode. . In addition, when all or part of the grid connection system of each of the plurality of bases is in emergency mode, the display mode of the display device 210 can be switched to emergency mode.

As a result, the transition from the normal state to the emergency state can be grasped immediately. Also, by switching the display mode, the visibility of information required only in an emergency can be improved.

In the base area 220, in addition to the amount of power that can be supplied at each base, information specific to the emergency mode, such as the number of standby EVs/PHEVs, the power consumption of shelters, and the number of evacuees, can be displayed.

The control unit 201 can display the suppliable power amount of each site on the display device 210 when the grid interconnection system is in the emergency mode. As a result, it is possible to collectively grasp whether power is insufficient or sufficient for each site. In addition, when the grid interconnection system is in emergency mode, the control unit 201 determines based on the suppliable power amount of each base and the power consumption of the shelter (specifically, the remaining time = suppliable power amount/power consumption ), the remaining time for which power can be supplied can be displayed on the display device 210 .

When the grid-connected system is in emergency mode, the control unit 201 can display at least one of the power consumption of evacuation centers and the number of evacuees in evacuation centers on the display device 210 . As a result, for example, the order of priority for dispatching EV/PHEV can be determined according to the amount of power consumption at the shelter or the number of evacuees.

Further, in the example of FIG. 8, if the power that can be supplied to base B is extremely low, or if the grid connection system cannot generate power, the display of base B is darker than the displays of other bases, for example. can do. That is, when the control unit 201 displays the suppliable power of each site on the display device 210, it can display in a different display mode according to the amount of the suppliable power. For example, the lower the suppliable power, the more conspicuous the display can be displayed (for example, the display is darkened). As a result, it is possible to easily grasp whether power is insufficient or sufficient at each site.

When the grid interconnection system is in the emergency mode, the control unit 201 displays on the display device 210 the number of EVs/PHEVs that can be moved to another site (reserve number) for each site. In the example of FIG. 8, sites A, B, C, D, E, and F each have 1, 0, 1, 2, 0, and 0 standby units. . Accordingly, information for allocating EV/PHEV between bases can be easily grasped.

When the grid-connected system is in emergency mode, and when the suppliable power at one site is equal to or less than a predetermined threshold, the control unit 201 outputs guidance information for allocating an EV/PHEV to the one site. can do. The predetermined threshold can be used as a reference for determining whether or not the grid interconnection system cannot generate power, for example.

In the example of FIG. 8, by operating the dispatch button 224, guidance information is displayed in the overall map. As indicated by the site information, site B has an extremely low amount of power that can be supplied and is short of power. On the other hand, bases A, C, and D each have one, one, and two standby units. Therefore, the control unit 201 outputs guidance information for allocating one, one, and two EVs/PHEVs from bases A, C, and D, respectively. Guidance information can be information indicating how many EVs/PHEVs are to be delivered from one or a plurality of bases with surplus power supply to bases with insufficient power. As a result, an EV/PHEV can be dispatched to a base where electric power is insufficient, and efficient operation can be performed as a whole grid interconnection system. In addition, the EV/PHEV has a function of acquiring position information of its own vehicle, and the EV/PHEV transmits the acquired position information to the server 200. Based on the positional information and the map information, it is also possible to instruct the EV/PHEV that is traveling or stopped at a location other than the base to be dispatched to a desired base.

FIG. 9 is a schematic diagram showing a first example of supply information displayed by the display device 40 in an emergency. The display screen 41 of the display device 40 displays shelter information 310 . The evacuation center information 310 includes remaining suppliable power 311, standby number 312, evacuation center power consumption 313, number of evacuees 314, disaster message board 315, and the like.

The display device 40 acquires operation mode information indicating whether the interconnection system of the other bases including the base is in the normal mode or the emergency mode, and switches the display mode of the display screen 41 according to the obtained operation mode information. can be done. By switching the display mode of the display device between the normal state (for example, the normal mode in FIG. 7) and the emergency state (for example, the emergency mode in FIG. 9), the transition from the normal state to the emergency state can be grasped immediately. Also, by switching the display mode, the visibility of information required only in an emergency can be improved.

As shown in FIG. 9, the remaining amount of suppliable power 311 is, for example, the state of charge of the stationary storage battery (70% in the example of FIG. 9), EV/PHEV (V1 to V5) at each charging/discharging station S1 to S5. can display the charging status of the battery. In the example of FIG. 9, since the EV/PHEV (V5) is not connected to the charging/discharging stand S5, the remaining amount of suppliable power is 0%. Further, whether the EV/PHEV is in a connected state or in a non-connected state can be displayed in different display modes, for example. In the example of FIG. 9, connection and non-connection can be distinguished by contrast or different colors.

In this manner, the display device 40 can display the power (remaining power) that can be supplied by the stationary storage battery and the charging/discharging station on the display screen 41 when the grid connection system is in the emergency mode. This makes it possible to easily ascertain whether the power is insufficient or sufficient.

The standby number 312 indicates, for example, one EV and one PHEV. As a result, information (for example, information indicating how many vehicles can be dispatched) for allocating EV/PHEV from the base in FIG. 9 to other bases with insufficient power can be easily grasped. be able to.

The display device 40 can display at least one of the power consumption 313 of shelters near the base and the number of evacuees 314 of the shelters. As a result, for example, the order of priority for dispatching EV/PHEV can be determined according to the amount of power consumption at the shelter or the number of evacuees.

Messages can be displayed on the disaster message board 315 . If there are many messages, the messages may be displayed in order for a predetermined period of time. As a result, it is possible to deal with situations where telephone lines are not working, and information can be shared between shelters.

FIG. 10 is a schematic diagram showing a second example of supply information displayed by the display device 40 in an emergency. Surrounding information 320 is displayed on the display screen 41 of the display device 40 . Surrounding information 320 includes surrounding shelter information 321, local damage situation 322, medical institution/rescue activity situation 323, map information 324, and the like.

Surrounding evacuation shelter information 321 includes, for example, surrounding evacuation shelters (for example, city hall, etc.), damage conditions (for example, ◯ indicates damage, X indicates no damage), and information such as the number of evacuees.

The local damage status 322 includes, for example, lifeline damage/restoration information, scale of earthquake, epicenter, tsunami/aftershock information, transportation status, fire outbreak status, building and collapse status, and the like. This makes it easier to grasp the damage situation in the area and to consider the presence or absence of a secondary disaster and the need to move to an evacuation center.

The status 323 of the medical institution/rescue activity includes the damage status and consultation status (congestion, unavailability of consultation, etc.) for each medical institution.

The map information 324 can display the positions of the base (current location) and nearby evacuation centers on a map. This makes it possible to easily grasp the location of the shelter.

Further, by selecting one of the required bases A to F in the selection area 223 illustrated in FIG. 8, the display device 210 can display the base information shown in FIG. 9 or 10 for the selected base. can be done. That is, the control unit 201 can display the base information of the selected base on the display device 210 when receiving an operation to select one base from among the bases.

In the storage unit 203, it is possible to record, for each base, the presence or absence of insurance for electric power support when the grid connection system is in the emergency mode. The control unit 201 can output support information (for example, EV/PHEV dispatch information) to bases with insurance coverage. The insurance for electric power support includes, for example, special contracts for preferentially receiving power supply support services in emergencies such as disasters, in addition to electric power support during normal times. As a result, if you take out insurance, you can preferentially enjoy the electric power support service in the event of a disaster.

FIG. 11 is a flow chart showing an example of a procedure of power management by the server 200 . The control unit 201 determines whether or not the communication with the grid interconnection system of each base is normal (S11), and if the communication with the grid interconnection system is not normal (NO in S11), the base with the communication abnormality (S12), and the process of step S13, which will be described later, is performed. In addition, when the communication with the grid connection system of each base is not normal, the control unit 201 terminates the process. If communication with the grid-connected system is normal (YES in S11), the control unit 201 determines whether the grid-connected system is in emergency mode (S13). If YES), power supply information (supply information on power supply) is acquired from each site, and power supply information in emergency mode is displayed (S14). Depending on the scale and conditions of the disaster, there may be sites that maintain the normal mode among the interconnection systems of all sites. Therefore, in step S14, the display of only the bases in the emergency mode among all the bases is switched.

The control unit 201 determines whether or not there is a base where the suppliable power is equal to or less than the threshold (S15), and if there is a base where the suppliable power is equal to or less than the threshold (YES in S15), the base is displayed in a manner different from the other bases. Display (S16). The control unit 201 determines whether or not there is a vehicle allocation operation (S17), and if there is a vehicle allocation operation (YES in S17), outputs vehicle allocation guidance information (S18), and performs the process of step S19 described later. If there is a base where the suppliable power is equal to or less than the threshold, the vehicle can be dispatched to the base.

If there is no vehicle allocation operation (NO in S17), the control unit 201 determines whether or not there is an operation to select one of all the locations (S19). If there is a selection operation (YES in S19), the control unit 201 displays the base information of the selected base (S20), and performs the process of step S21, which will be described later.

If there is no selection operation (NO in S19), the control unit 201 determines whether or not to end the process (S21). (YES in S21), the process is terminated.

If the grid interconnection system is not in the emergency mode (NO in S13), that is, if it is in the normal mode, the control unit 201 displays the power supply information of all bases in the normal mode (S22), and processes after step S13. continue. If there is no location with the suppliable power less than or equal to the threshold (NO in S15), the control unit 201 specifies the priority of the locations with insufficient suppliable power (S23), and performs the process of step S17. If there is no location with a supplyable electric power less than the threshold, it is possible to give priority to the locations with insufficient supplyable electric power and to allocate the number of vehicles to be dispatched according to the priority.

The server 200 of this embodiment can also be implemented using a general-purpose computer including a CPU (processor), RAM (memory), and the like. That is, as shown in FIG. 11, a computer program defining the procedure of each process is loaded into a RAM (memory) provided in the computer, and the computer program is executed by a CPU (processor), thereby executing the server 200 on the computer. can be realized.

FIG. 12 is a flow chart showing an example of a processing procedure by the display device 40. As shown in FIG. The display device 40 determines whether or not the communication with the grid interconnection system of each base is normal (S31), and if the communication with the grid interconnection system is not normal (NO in S31), the base with the communication abnormality (S32), and the process of step S33, which will be described later, is performed. Note that if the communication with the grid-connected system at each site is not normal, the display device 40 terminates the process. Even if there is an abnormality in communication, power supply can be continued as long as there is no abnormality in the system interconnection system of the site. If the communication with the grid-connected system is normal (YES in S31), the display device 40 determines whether the grid-connected system is in emergency mode (S33). YES), the base information in the emergency mode is displayed on the display screen 41 (S34). The display device 40 displays the remaining amount of power that can be supplied by the stationary storage battery and the EV/PHEV (S35), and displays the number of standby EV/PHEVs that can be moved to another base (S36).

The display device 40 displays the power consumption and the number of evacuees of nearby shelters (S37), and performs the process of step S40, which will be described later. If it is not the emergency mode (NO in S33), that is, if it is the normal mode, the display device 40 displays base information in the normal mode on the display screen 41 (S38).

The display device 40 displays the charging status of the stationary storage battery and the EV/PHEV (S39), and determines whether or not to end the process (S40). If the processing is not to be ended (NO in S40), the display device 40 continues the processing from step S33 onward, and if the processing is to be ended (YES in S40), the processing is ended.

A power management method according to the present embodiment is a power management method for a grid-connected system installed at each of a plurality of bases and including a stationary storage battery and a charging/discharging stand. Supply information about power supply is acquired, and the acquired supply information is output to a predetermined device.

A power management device according to the present embodiment is a power management device for a grid-connected system that is installed at each of a plurality of bases and includes a stationary storage battery and a charging/discharging stand. An acquisition unit that acquires supply information related to power supply, and an output unit that outputs the supply information acquired by the acquisition unit to a predetermined device.

Supply information can include both normal times and emergency times such as disasters. For example, in case of an emergency, the supply information can be power information that can be supplied from the grid interconnection system at one site to the grid interconnection system at another site. The predetermined device may be a device installed in a power management facility (for example, a server), or may be a device of a person in charge of power management (for example, a mobile terminal device, a personal computer, etc.).

With the configuration described above, it is possible to obtain information for supplying power from another site to a site that is short of power, and to realize efficient power management of a plurality of grid-connected systems.

The power management method of the present embodiment acquires operation mode information indicating whether the grid interconnection system is in a normal mode or an emergency mode, and switches the display mode of a predetermined management display device according to the acquired operation mode. .

The predetermined management display device can be, for example, a display device installed in a facility that performs power management. By switching the display mode of the management display device between the normal state (normal mode) and the emergency state (emergency mode), the transition from the normal state to the emergency state can be grasped immediately. Also, by switching the display mode, the visibility of information required only in an emergency can be improved.

The power management method of the present embodiment displays the suppliable power of each base on the management display device when the grid interconnection system is in the emergency mode.

As a result, it is possible to collectively grasp whether power is insufficient or sufficient for each site.

In the power management method of the present embodiment, when displaying the suppliable power of each site on the management display device, the display is performed in different display modes according to the amount of suppliable power.

For example, the lower the suppliable power, the more conspicuous the display can be displayed (for example, the display is darkened). As a result, it is possible to easily grasp whether power is insufficient or sufficient at each site.

In the power management method of the present embodiment, when the grid interconnection system is in the emergency mode, the management display device displays the number of electric vehicles that can move to another base for each base.

The display device of the present embodiment displays the number of electric vehicles that can be moved to another base on the display screen when the grid interconnection system is in the emergency mode.

An electric vehicle may be, for example, a plug-in hybrid vehicle (PHEV) or an electric vehicle (EV). This makes it possible to easily grasp information for dispatching electric vehicles between bases.

According to the power management method of the present embodiment, when the grid interconnection system is in an emergency mode, and when the suppliable power at one base is equal to or less than a predetermined threshold value, an electric vehicle is dispatched to the one base. output guidance information.

The predetermined threshold can be used as a reference for determining whether or not the grid interconnection system cannot generate power, for example. Guidance information can be, for example, information indicating how many electric vehicles are to be delivered from one or a plurality of bases that have sufficient suppliable power to the base. As a result, an electric vehicle can be dispatched to a base where electric power is insufficient, and efficient operation of the grid interconnection system as a whole can be performed.

In the power management method of the present embodiment, when the grid interconnection system is in emergency mode, at least one of the power consumption of a shelter located near each site and the number of evacuees in the shelter is displayed on the management display device. indicate.

In the display device of the present embodiment, when the grid interconnection system is in an emergency mode, the power consumption of a shelter near the base and the shelter information including the number of evacuees in the shelter are displayed on the display screen. indicate.

As a result, for example, the order of priority for allocating electric vehicles can be determined according to the amount of power consumption in the shelter or the number of evacuees.

In the power management method of the present embodiment, when the grid interconnection system is in an emergency mode, whether or not insurance is subscribed for power support is recorded for each base, and support information is output to bases with insurance. do.

The insurance for electric power support includes, for example, special contracts for preferentially receiving power supply support services in emergencies such as disasters, in addition to electric power support during normal times. As a result, if you take out insurance, you can preferentially enjoy the electric power support service in the event of a disaster.

The power management method of the present embodiment receives an operation to select one site from among the sites, and displays site information of the one site on the management display device when the operation is received.

Site information can include detailed information for each site. As a result, for example, it is possible to grasp more detailed information about the bases that require power support.

A display device according to the present embodiment is a display device for displaying information on a base where a grid-connected system including a stationary storage battery and a charge/discharge stand is installed, and at least advertisement information and supply information related to power supply at the base. Display one on the display screen.

Supply information can include both normal times and emergency times such as disasters. For example, during normal times, both advertising information and serving information, or only advertising information can be displayed. Also, in an emergency, only supply information can be displayed. In the case of an emergency, the supply information can be, for example, power information that can be supplied to grid-connected systems at other bases.

The display device of the present embodiment displays the charging status of the stationary storage battery and the charging status of the electric vehicle connected to the charging/discharging station on the display screen.

This makes it possible to grasp the charging status at the base.

The display device of the present embodiment displays a charging/discharging stand to which an electric vehicle is connected and a charging/discharging stand to which an electric vehicle is not connected in different display modes.

For example, a charging/discharging station to which an electric vehicle is connected can be displayed brightly, and a charging/discharging station to which the electric vehicle is not connected can be displayed dark. Thereby, it is possible to easily grasp the connection state of the electric vehicle at each of the plurality of charging/discharging stations.

The display device of the present embodiment includes an acquisition unit that acquires operation mode information indicating whether the interconnection system of another base including the base is in normal mode or emergency mode, and the operation mode information obtained by the acquisition unit The display mode of the display screen is switched accordingly.

By switching the display mode of the display device between the normal state (normal mode) and the emergency state (emergency mode), the transition from the normal state to the emergency state can be grasped immediately. Also, by switching the display mode, the visibility of information required only in an emergency can be improved.

The display device of the present embodiment displays the power that can be supplied by the stationary storage battery and the charging/discharging station on the display screen when the grid interconnection system is in the emergency mode.

This makes it possible to easily ascertain whether the power is insufficient or sufficient.

At least part of the above-described embodiments can be combined arbitrarily.

100, 100a, 100b, 100c, 100d, 100e, 100f grid interconnection system 11 stationary storage battery S1, S2, S3, S4, S5 charge/discharge stand 40 display device 41 display screen 200 server 201 control unit, 202 communication unit, 203 storage unit, 204 input unit, 205 output unit, 210 display device

Claims (12)

A power management method for a grid-connected system installed at each of a plurality of bases and including a storage battery and a charge/discharge stand,
Acquiring supply information about power supply at each site where the grid interconnection system is installed, which includes power information that the grid interconnection system at the site can supply to grid interconnection systems at other sites;
A power management method for outputting the acquired supply information to a predetermined device. Acquiring operation mode information indicating whether the grid interconnection system is in normal mode or emergency mode,
2. The power management method according to claim 1, wherein the display mode of a predetermined management display device is switched according to the acquired operation mode. 3. The power management method according to claim 2, wherein when the grid interconnection system is in emergency mode, the power that can be supplied from each site is displayed on a management display device. 4. The power management method according to claim 3, wherein when displaying the suppliable power of each site on the management display device, the display is performed in a different display mode according to the amount of the suppliable power. 5. The electric power according to any one of claims 2 to 4, wherein when the grid interconnection system is in an emergency mode, the management display device displays the number of electric vehicles that can move from one base to another base. Management method. From claim 2, wherein when the grid interconnection system is in an emergency mode and the power that can be supplied at one base is equal to or less than a predetermined threshold, guidance information for dispatching an electric vehicle to the one base is output. 6. A power management method according to any one of claims 5 to 10. When the grid interconnection system is in an emergency mode, at least one of the power consumption of a shelter located near each site and the number of evacuees in the shelter is displayed on the management display device. A power management method according to any one of the preceding clauses. recording whether or not insurance is subscribed for electric power support for each base when the grid interconnection system is in emergency mode;
8. The power management method according to any one of claims 2 to 7, wherein the support information is output to a site with insurance coverage. A power management device for a grid-connected system installed at each of a plurality of bases and comprising a storage battery and a charge/discharge stand,
Acquisition for acquiring supply information relating to power supply at each site where the grid interconnection system is installed , the supply information including power information that the grid interconnection system at the site can supply to grid interconnection systems at other sites Department and
and an output unit that outputs the supply information acquired by the acquisition unit to a predetermined device. A display device for displaying information on a site where a grid interconnection system comprising a storage battery and a charge/discharge stand is installed,
A display for displaying on a display screen at least one of the advertisement information and the supply information regarding the power supply of the base, the supply information including power information that can be supplied from the grid interconnection system of the base to the grid interconnection system of the other base. Device. 11. The display device according to claim 10, wherein the charging status of the storage battery and the charging status of the electric vehicle connected to the charging/discharging station are displayed on the display screen. 12. The display device according to claim 10, wherein the charging/discharging stand to which the electric vehicle is connected and the charging/discharging stand to which the electric vehicle is not connected are displayed in different display modes.

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