JP5989436B2 - Energy management system, energy management apparatus, control method, and program - Google Patents

Description

  Embodiments described herein relate generally to an energy management system, an energy management apparatus, a control method, and a program for managing energy consumption on the consumer side.

  Energy management systems are becoming widespread against the background of heightened awareness of energy conservation (energy conservation) and the need for energy self-sufficiency during disasters. The energy management system has functions of displaying energy consumption of electric devices (including home appliances) possessed by electric power consumers (homes, stores, offices, factories, buildings, etc.) and controlling operation. In addition to energy savings, benefits such as cost savings and reduction of CO2 emissions can be obtained.

Japanese Patent Publication No. 3-50496

Residential environment planning research institute, evaluation analysis of energy saving effect by HEMS introduction demonstration test in general household Result report, (NEDO report 100009235)

  The household energy management system aims to bring benefits to consumers and reduce the burden on the environment by reducing energy consumption by reducing energy consumption such as household electricity and gas. The same is true for larger systems, such as those for regions or businesses.

  By the way, a power supply system may go down due to a disaster such as an earthquake, a lightning strike, or a flood, resulting in a power outage. Secondary disasters (collectively referred to as secondary damage) that occur after recovery (recovery) from a power outage become a major problem. For example, when residents evacuate from their homes during a disaster, they often forget to take measures such as turning off devices such as irons or unplugging. There have been many reports of cases where nobody is present when electricity is restored and an iron, electric heater, dryer, etc. is the source of fire and a fire occurs.

  An energy management system for such a situation is not known. There is a demand for a technology that not only saves energy but also keeps electrical equipment in a safe state in an emergency and protects human lives and property.

  An object is to provide an energy management system, an energy management apparatus, a control method, and a program that can prevent secondary damage.

  According to the embodiment, the energy management system includes a device specifying unit, a grasping unit, a storage unit, and a control unit. The device specifying unit specifies each electric device connected to a distribution system of a building to which commercial power is supplied. The grasping unit grasps the individual state of the identified electrical device. The storage unit stores a status management table that records the status of each grasped electrical device in a normal state, and a recovery that registers permission or non-recovery of the state in a normal state after recovery from the emergency for each electrical device. A permission table is stored. The control unit stops the operation of each electric device in an emergency, and recovers the electric device permitted in the recovery permission / rejection table to the state recorded in the state management table after recovery from the emergency.

FIG. 1 is a diagram illustrating an example of a system according to the embodiment. FIG. 2 is a diagram illustrating an example of an energy management system according to the embodiment. FIG. 3 is a functional block diagram showing a main part of the system shown in FIG. FIG. 4 is a diagram illustrating an example of the connected device detection unit 10. FIG. 5 is a functional block diagram illustrating an example of the home gateway 13. FIG. 6 is a diagram illustrating an example of information registered in the device list 135a. FIG. 7 is a diagram illustrating an example of information registered in the state management table 135b. FIG. 8 is a diagram illustrating an example of information registered in the recovery permission / refusal table 135c. FIG. 9 is a flowchart illustrating an example of a processing procedure during the recovery operation. FIG. 10 is a diagram illustrating an example of a state after recovery from an emergency. FIG. 12 is a functional block diagram illustrating another example of the home gateway 13. FIG. 12 is a diagram illustrating an example of information registered in the emergency table 135e. FIG. 13 is a diagram illustrating an example of information registered in the recovery time table 135f. FIG. 9 is a flowchart illustrating an example of a processing procedure when an earthquake occurs.

  FIG. 1 is a diagram illustrating an example of a system according to the embodiment. FIG. 1 shows an example of a power transmission and distribution network known as a so-called smart grid. In an existing power distribution network, existing power plants such as nuclear power, thermal power, and hydropower are connected to a wide variety of consumers such as general households, buildings, and factories through a power network. In the next-generation distribution network, in addition to these, distributed power sources that combine renewable energy such as sunlight and wind power and power storage devices as new power sources, and new traffic systems and charging stations as new demand will be used for power transmission and distribution. Connected to the net. These various elements are connected via a communication network and controlled in a centralized manner.

  Systems that intelligently distribute power are collectively referred to as an energy management system (EMS). EMS is classified into several types according to its size. For example, there are HEMS (Home Energy Management System) for general households and BEMS (Building Energy Management System) for buildings. In addition, there are CEMS (Community Energy Management System) for smaller systems or local communities, and FEMS (Factory Energy Management System) for large factories. These systems can be linked to achieve fine power control.

This type of system enables highly coordinated operation between existing power plants, distributed power sources, renewable energy sources such as solar and wind, and consumers. As a result, a new and smart power supply service such as an energy supply system mainly composed of natural energy and a consumer-participation-type energy supply based on bidirectional cooperation between the consumer and the operator is created.
FIG. 2 is a diagram illustrating an example of an energy management system according to the embodiment. The main components of this system are a HEMS formed for each of the subscriber premises 100 to which power is supplied from the distribution network, and a server device 200 that provides services to each HEMS. Server device 200 is connected to IP network 300. The IP network 300 is also provided with a database 400 that stores various data according to the embodiment.

  The HEMS is formed with a home gateway (HGW) 13 as a core. The home gateway 13 is connected to the IP network 300 and can exchange information and data with the server device 200 via the IP network 300. That is, the home gateway 13 sends a service provision request message including its own identifier to the server device 200. In response to this, the server device 200 returns a control instruction for controlling the electrical equipment in the HEMS to the home gateway 13. Receiving this, the home gateway 13 controls the electrical equipment in the subscriber house 100 based on the control instruction. That is, the home gateway 13 is positioned as an energy management device in HEMS.

  A number of demonstration tests have been conducted on HEMS. Typical functions of the HEMS include, for example, air conditioner presence / absence control (turn off the air conditioner when there is no person), lighting presence / absence control / brightness control (turn off or darken the person when there is no person), There are standby power cuts. In addition, there are functions such as display (visualization) of power consumption and gas consumption in the home, energy saving contest by comparison between multiple households, advice according to outside temperature, display of CO2 emissions, and the like.

  In FIG. 2, electric power (commercial power) supplied from a power grid 60 is distributed to each home via a power pole transformer 61 and the like, and is supplied to the subscriber's home 100 via a watt hour meter 2 such as a smart meter. Connected to distribution board 4. The watt-hour meter 2 includes the amount of power generated by the renewable energy power generation system provided in the subscriber home 100, the amount of power consumed by the subscriber home 100, the amount of power flowing from the power grid 60, or the amount of power flowing backward to the power grid 60, etc. Measure.

  The power line 21 is formed as a power distribution system of the subscriber house 100. The distribution board 4 is connected to an electric device (air conditioner 22, lighting 23, refrigerator 24, television 25, etc. (including a heat pump type hot water heater (HP) not shown) and a power conditioner (Power Conditioning) via a power line 21. System: PCS) 26. In short, an electric device is a device connected to the power line 21, and includes an electric vehicle (EV) 27, a PV system 28, etc., devices that consume power, and devices that generate power. The distribution board 4 may include a measuring device that measures the amount of power for each feeder.

  A solar panel is installed on the roof or outer wall of the subscriber's house 100 to form a PV system 28. The DC power generated by the PV system 28 is supplied to the power conditioner 26. The power conditioner 26 supplies this direct-current power to the storage battery 29 in order to charge the storage battery 29 as a power storage device installed in the subscriber's house 100.

  The power conditioner 26 includes a converter (not shown), converts AC power from the power line 21 into DC power, and supplies it to the storage battery 29. Thereby, the storage battery 29 can also be charged using late-night power or the like. Further, the power conditioner 26 includes an inverter (not shown), converts DC power supplied from the storage battery 29 or the fuel cell 30 into AC power, and applies the AC power to the power line 21. As a result, the device connected to the power line 21 can receive power (self-supplied power) from the storage battery 29 and the fuel cell 30.

  In short, the power conditioner 26 has a function as a power converter for transferring energy between the storage battery 29, the fuel cell 30 and the power line 21. The power conditioner 26 also includes a control function for stably operating the storage battery 29 and the fuel cell 30. Furthermore, the power conditioner 26 also distributes power to a charging outlet 33 that can be connected to the electric vehicle 27. This makes it possible to charge and discharge the on-board battery mounted on the electric vehicle 27.

  A home network 31 such as a LAN (Local Area Network) is formed in the subscriber home 100. The home gateway 13 can communicate with the watt-hour meter 2, the distribution board 4, the power conditioner 26, and each electrical device via the home network 31. The home network 31 may be a wired link or a wireless link.

  The home gateway 13 is a communication device that transmits various data to the server device 200 and receives various data from the server device 200. That is, the home gateway 13 is a computer having a Central Processing Unit (CPU), and in addition to a communication function with the server device 200, requests the server device 200 to provide various services, and reflects the subscriber's intention in system control. It has a function to let you. These functions are realized by a program stored in a nonvolatile memory or the like.

  The home gateway 13 is connected to the terminal 32. In addition to a form such as a touch panel, the terminal 32 may be a general-purpose portable information device or a personal computer. The terminal 32 displays the operating status and power consumption of each electrical device, the fuel cell 30, the storage battery 29, and the PV system 28 on, for example, an LCD (Liquid Crystal Display), or notifies the subscriber (user) by voice guidance or the like. The terminal 32 includes an operation panel and accepts various operations and setting inputs by the subscriber.

  The IP network 300 to which the home gateway 13 is connected is the so-called Internet or a VPN (Virtual Private Network) of a system vendor. The home gateway 13 can communicate with the server device 200 via the IP network 300 and exchange data with the database 400. Each electrical device can also communicate with the server device 200 of the IP network 300 via the home gateway 13 and exchange data with the database 400.

  As a communication protocol, ECHONET (registered trademark), ECHONET Lite (registered trademark), ZigBee (registered trademark), Z-Wave (registered trademark), KNX (registered trademark), or the like can be used. As a lower communication layer, a wired LAN such as Ethernet (registered trademark), power line communication, wireless LAN, Bluetooth (registered trademark), or the like can be used. Note that the IP network 300 can include a wireless or wired communication infrastructure for forming a bidirectional communication environment between the home gateway 13 and the server device 200.

  FIG. 3 is a functional block diagram showing a main part of the system shown in FIG. The electric power supplied from the electric power company is connected to the distribution board 4 of the subscriber's home 100 via the wattmeter 2 and the main breaker 3 from the electric power system 60. The main breaker 3 is connected to the power supply state determination unit 5 on the end side. The main breaker 3 is under the control of the electric power company, and the responsibility demarcation point between the subscriber and the electric power company is between the main circuit breaker 3 and the power supply state determination unit 5.

The power from the power supply state determination unit 5 is connected to a system separation unit 6 and a UPS (Uninterruptible Power Supply) 14.
The system separation unit 6 is located further on the end side than the power supply state determination unit 5 and is connected to a main circuit (not shown) that collects the plurality of power lines 21 in the subscriber house 100. A plurality of power lines 21 wired from the main circuit to the house pass through the circuit breaker 7, the current measuring device 8, and the separation unit 9 before reaching each electric appliance or outlet. In the embodiment, the connected device detection unit 10 is further provided in an outlet connected to the power line 21.

The home gateway 13 is connected to both the system separation unit 6 and the UPS 14 via the power line 21. As a result, the home gateway 13 can be operated even during a power failure.
The home gateway 13 can communicate with each electrical device via the home network 31. Furthermore, the home gateway 13 can communicate with the power supply state determination unit 5, the connected device detection unit 10, and the earthquake detection unit 11 via the home network 31.

  When detecting the occurrence of an earthquake, the earthquake detection unit 11 notifies the home gateway 13 to that effect. The earthquake detection unit 11 may be an interface capable of receiving an earthquake early warning from a public communication infrastructure such as a television broadcast or an IP network 300 in addition to a seismometer having a communication function.

  In the configuration shown in FIG. 3, the power supply state determination unit 5 determines whether power is supplied to the subscriber's home 100. That is, the power supply state determination unit 5 determines whether power is being supplied or is in a power failure, and outputs the determination result to the home gateway 13. For example, at the time of a power failure of the power system 60 or when the main breaker 3 is turned off, the power supply state determination unit 5 determines the power failure and notifies the home gateway 13 to that effect. The determination of power supply / power failure can be easily performed by threshold determination based on a measured value of ground potential, for example. The power supply voltage may be notified to the home gateway 13 and the determination process may be performed by the home gateway 13.

The system separation unit 6 disconnects or connects the main circuit from the power system 60 according to the control of the home gateway 13. That is, the system separation unit 6 separates the power line 21 of the subscriber's home 100 from the power system 60 and supplies self-supplied power to the power line 21 in an emergency such as a power failure.
The circuit breaker 7 is a so-called circuit breaker that individually cuts off the power line 21 when an overcurrent flows. The current measuring device 8 connected to the lower order of the circuit breaker 7 measures the value of the current flowing through each power line 21 and notifies the home gateway 13 of the value. Thereby, the home gateway 13 grasps the current value of each power line 21.
Instead of notifying the home gateway 13 of the current value measured by each current measuring device 8, CT (Current Transformer) is used as the current measuring device 8, and the CT measurement value is digitized on the home gateway 13 side. You may do it.

  The separation unit 9 provided below the current measuring device 8 is a mechanical or electromagnetic relay, and separates or connects the main circuit and the power line 21 according to the control of the home gateway 13. In FIG. 3, the separating unit 9 is provided in the distribution board 4, but instead, the separating unit 9 may be embedded in an outlet serving as the end of the power line 21.

  FIG. 4 is a diagram illustrating an example of the connected device detection unit 10. The connected device detection unit 10 is, for example, a wireless tag reader, and includes a unique ID (IDentification) information and a function of acquiring wireless tag identification information. The connected device detection unit 10 can be provided as an adapter that can be embedded in an outlet or inserted into and removed from an insertion port, for example.

  The iron 34 as an electric device includes a wireless tag (RF-ID) 40 that stores information for specifying the iron 34. For example, the wireless tag 40 is attached to an outlet plug extending from the main body of the iron 34.

  When the plug approaches or is plugged in, the connected device detection unit 10 and the wireless tag 40 communicate with each other, whereby the connected device detection unit 10 acquires the identification information of the iron 34. The connected device detection unit 10 notifies the home gateway 13 of the identification information of the iron 34 and its own ID information. As a result, the home gateway 13 can grasp which electrical device is connected to which outlet. Communication between the connected device detection unit 10 and the home gateway 13 can be realized by using a dedicated communication line, wireless communication, or power line communication using the power line 21. Of course, if the electrical device is compatible with ECHONET (registered trademark) or the like, its communication function may be used.

  Returning to FIG. 3, the home gateway 13 is positioned as an energy management device in the energy management system. The home gateway 13 is operated by electric power (commercial power) supplied from the load side of the main breaker 3 in normal times. In the event of a power failure, self-supplied power is supplied from the UPS 14. It is also possible to supply power to the home gateway 13 from the storage battery 29 or a photovoltaic power generation (PV) system. Next, the first and second embodiments will be described based on the above configuration.

[First Embodiment]
FIG. 5 is a functional block diagram illustrating an example of the home gateway 13. The home gateway 13 includes an input unit 131, an interface unit 132, a storage unit 135, a program memory 134, and a central processing unit (CPU) 133. That is, the home gateway 13 is a computer that functions when the CPU 133 executes a program stored in the program memory 134.

  The input unit 131 is a human machine interface (such as an operation panel or a switch) that is operated by a subscriber (user) who is a resident of the household. The subscriber inputs information related to the operation of the HEMS from the input unit 131. Information input from the input unit 131 is stored in the storage unit 135.

  The information related to the operation of the HEMS includes information such as characteristics of each electric device (power consumption and the like), operation settings of the electric device, operation settings, the capacity of the storage battery 29, and an operation plan. The operation plan is an operation plan for electrical equipment, and includes information on settings, operation time, operation period, and the like when operating each electrical equipment.

  In addition, the input unit 131 can be used to input the desired operating conditions for energy saving / CO2 saving of each household, the setting of operating conditions of each electrical device when an earthquake occurs, a power failure occurs, or when a power failure is recovered. Is possible.

  The interface unit 132 is connected to the home network 31 and has a communication function with each electrical device and the IP network 300. The interface unit 132 may be connected to an access point 136 as a radio base station. The access point 136 is a communication interface with an electric device having a wireless communication function.

The storage unit 135 stores a device list 135a, a state management table 135b, a recovery permission / inhibition table 135c, and the operation plan 135d as data according to the embodiment.
The program memory 134 stores a device identification program 134a, a grasping program 134b, a planning program 134c, and a control program 134d as programs including instructions necessary for processing functions according to this embodiment. The device specifying program 134a, the grasping program 134b, the planning program 134c, and the control program 134d can be recorded on a removable medium (recording medium) such as a CD-ROM or via a communication line (including the IP network 300). It can also be downloaded.
The CPU 133 reads out each program from the program memory 134 and performs arithmetic processing by hardware, and includes a device specifying unit 133a, a grasping unit 133b, a planning unit 133c, and a control unit 133d as its processing functions. Among these, the control unit 133d stops the operation of each electrical device in an emergency such as a power failure or an earthquake.

  In order to stop the operation, for example, there is a method of controlling the system separation unit 6, the circuit breaker 7, or the separation unit 9 to cut off the power supply from the power system 60 to each electrical device. In addition, there is a method of inputting an operation stop command via the home network 31 for an electric device having a communication function.

The device specifying unit 133 a specifies each electric device connected to the power line 21. The identified electrical device is registered in the device list 135a.
FIG. 6 is a diagram illustrating an example of information registered in the device list 135a. The device list 135a is a list of electric devices provided in the subscriber's house 100. Each electric device is associated with a device number such as a serial number, for example. In the embodiment, whether or not each electrical device supports communication, that is, whether or not it has a communication function is managed together.

  For example, since an air conditioner (living room), an air conditioner (bedroom), a washing machine, and a lighting (living room) are compatible with communication (existing), it can be seen that the communication function conforms to ECHONET-Lite (registered trademark). It is shown that the other electric devices do not have a communication function, and the device specifying unit 133a uses the function of the connected device detecting unit 10 to specify these devices.

  Returning to FIG. 5, the grasping unit 133 b grasps the individual operating state of the electrical device identified by the device identifying unit 133 a. The operating state is simply information indicating on / off, but other information such as various operation modes, illuminance, and cooling temperature may be included. These pieces of information can be grasped based on the communication function of the electric device, or the non-communication-compatible device based on, for example, the energization state of the connected outlet and the information from the current measuring unit 9.

  In order to grasp the operating state in real time, the grasping unit 133b preferably executes the process at a relatively short cycle (for example, every second). The grasped operation state is registered in the state management table 135b.

  FIG. 7 is a diagram illustrating an example of information registered in the state management table 135b. The state management table 135b is a table in which the latest state such as operation / stop / lighting is associated with each electrical device registered in the device list 135a. In addition, it is also possible to record the power consumption by the operating electrical equipment.

  Returning to FIG. 5, the planning unit 133c refers to various settings given from the input unit 131, past operation results, and the like, mainly from the viewpoint of minimizing energy costs or reducing CO2 emissions. Formulate 135d. The formulated operation plan 135d is stored in the storage unit 135.

  FIG. 8 is a diagram illustrating an example of information registered in the recovery permission / refusal table 135c. The recovery permission / refusal table 135c is a table in which permission / rejection of recovery to a normal state is registered for each electric device after recovery from an emergency. For example, the washing machine, the lighting (living room), and the lighting (bedroom) are set to be restored to the state before operation stop when recovered from an emergency. Other devices are set to remain in operation even after recovery from an emergency.

  Returning to FIG. 5, the control unit 133 d controls each electrical device according to the operation plan 135 d in the normal time. Control items include air conditioner presence / absence control, illumination brightness control, hot water start time in the water heater, and temperature setting adjustment of the air conditioner when the fan is operated in a room where the air conditioner is operating.

  Further, the control unit 133d stops the operation of each electric device regardless of the operation plan 135d in an emergency. After recovery from an emergency, the control unit 133d restores the electrical device permitted to be restored in the restoration permission / denial table 135c to the state recorded in the state management table 135b before the occurrence of an emergency.

  Next, the operation of the above configuration will be described. In the first embodiment, the control unit 133d stops all electric devices in an emergency such as an earthquake. That is, the control unit 133d shuts off the circuit breaker 7 and disconnects the separation unit 9, or inputs an operation stop command to the electrical device through communication. Then, when the earthquake is settled or when the power failure due to the earthquake is recovered, the control unit 133d executes the processing procedure shown in FIG. 9 after reconnecting the circuit breaker 7.

  FIG. 9 is a flowchart illustrating an example of a processing procedure during the recovery operation. When recovering from the emergency, the control unit 133d first acquires data on the electrical devices registered in the device list 135a (step S11). That is, the control unit 133d refers to the device list 135a, identifies all the electrical devices, and reads the presence / absence of communication support for each electrical device from the device list 135a.

  Next, the control unit 133d reads data registered in the state management table 135b and the recovery permission / refusal table 135c for one electrical device (step S12). Next, the control unit 133d determines whether or not to operate the electric device based on the read data (step S13). That is, the control unit 133d determines that, among the devices that are in operation (including lighting) in the state management table 135b, the electric devices whose (O) is checked in the recovery permission / denial table 135c are to be restarted.

  If it is determined that the target electric device is not to be operated (non-operating), the processing procedure proceeds to step S17, and it is determined whether or not the processing for all the electric devices has been completed. The loop of steps S12 to S17 is repeated, for example, in ascending order of device numbers until the processing for all electrical devices is completed.

  If it is determined to operate in step S13, the control unit 133d inputs (connects) a branch connected to the corresponding electrical device (step S14). That is, the separation unit 9 is reconnected. Next, the control unit 133d determines whether or not the electrical device is compatible with communication (step S15). If the communication is supported, the control unit 133d transmits a start signal (or command) to the electric device and restarts the operation (step S16), and then the processing for all the electric devices is completed in step S17. Determine whether or not. If the communication is not supported, step S16 is skipped, and the processing procedure proceeds to step S17.

  FIG. 10 is a diagram illustrating an example of a state after recovery from an emergency. For example, an air conditioner (living room) and an iron were operating before an emergency, but are not allowed to recover, so that they remain stopped after recovery. The washing machine that was in operation and the lighting (living room) that was lit up are allowed to recover and will be reactivated. Devices that were stopped from the beginning remain stopped even if they are allowed to recover (such as lighting (bedroom)).

  As described above, in the first embodiment, for each electrical device managed in the energy management system, the normal state (whether it is operating) is monitored in real time and registered in the table. In addition, whether or not to restart after recovery from an emergency is set and registered in advance for each electrical device. In an emergency, all electrical devices are stopped, and after recovery, the electrical devices registered to be restarted are restored. For an electrical device compatible with ECHONET (registered trademark) or the like, the setting is directly changed, or start / stop is switched by inputting a command. For electrical devices that do not support communication, the separation unit 9 of the distribution board 4 is switched on / off.

  As a result of this, after electrical power is restored from an emergency, if electrical equipment that can be operated is operating before the power failure, it is reactivated, and electrical equipment that you do not want to be reactivated after power is restored is stopped. It is possible to leave. In other words, it becomes possible to arbitrarily select and specify which electrical device is to be kept off by setting in advance. For example, it is safe to stop a device that generates a large amount of heat such as an iron 34 or an electric stove during an earthquake, and stop when an earthquake occurs. Further, even after recovery from a power failure, it is safe to stop the iron 34 and the electric stove after recovery.

  For example, a technique is known in which the amount of current is monitored, and a device with a large amount of current is not restarted. However, due to the recent trend toward energy saving, it is difficult to specify an electric device only by monitoring current or power consumption, and it is difficult to specify whether it is a heat source device.

  Therefore, in the first embodiment, for example, an electric device is specified by a wireless tag technology or information provided from HEMS, and an emergency / recovery state can be individually set for each electric device. In addition, there are devices such as emergency lights that should be restored immediately for safety even if the amount of power consumption is large. According to the first embodiment, it is possible to reflect the user's intention by prior settings and to restore these devices with priority. The ability to designate a device to be restored preferentially in this way is particularly effective in a case where power must be supplied by the storage battery 29.

  As described above, according to the first embodiment, even if a power failure occurs due to an earthquake, a lightning strike, or an accident, an electrical device is prevented from being unexpectedly or dangerously operated due to forgetting to turn off the switch, and a safe state is maintained. So that the equipment can be controlled. Therefore, it is possible to provide an energy management system, an energy management device, a control method, and a program that can prevent secondary damage, thereby reducing the risk of fire and personal injury.

[Second Embodiment]
FIG. 11 is a functional block diagram illustrating another example of the home gateway 13. In FIG. 12, parts that are the same as those in FIG. 5 are given the same reference numerals, and only different parts will be described here. In FIG. 11, the storage unit 135 stores an emergency table 135e and a recovery table 135f.

FIG. 12 is a diagram illustrating an example of information registered in the emergency table 135e. The emergency table 135e is a table in which an emergency state is registered for each electrical device.
FIG. 13 is a diagram illustrating an example of information registered in the recovery time table 135f. The recovery table 135f is a table in which the state after recovery from an emergency is registered for each electrical device.

  In an emergency, the control unit 133d forcibly switches the state of the electrical device specified by the device specification unit 133a to the state registered in the emergency table 135e regardless of the operation plan 135d. In addition, after the recovery from the emergency, the control unit 133d switches the state of the specified electrical device to the state registered in the recovery table 135f.

  FIG. 14 is a flowchart illustrating an example of a processing procedure when an earthquake occurs. When an earthquake occurs, the earthquake detection unit 11 detects that fact and notifies the CPU 133 of it. Then, the control unit 133d first acquires the data of the electric device registered in the device list 135a (Step S1). That is, the control unit 133d refers to the device list 135a, identifies all the electrical devices, and reads the presence / absence of communication support for each electrical device from the device list 135a.

  Next, the control unit 133d reads the data registered in the emergency table 135e for one electrical device (step S2). Next, the control unit 133d determines whether to leave this electric device in operation or to stop it based on the read data (step S3). If it is not stopped, the processing procedure proceeds to step S17, and it is determined whether or not the processing for all the electrical devices has been completed. The loop of steps S2 to S7 is repeated, for example, in ascending order of device numbers until the processing for all electrical devices is completed.

  If it is determined to stop in step S3, the control unit 133d determines whether or not the electrical device is compatible with communication (step S4). If it corresponds to communication, control part 133d will transmit a stop signal (or command) to this electric equipment, and will stop (Step S5). If it does not correspond to communication, Step S5 is skipped and control part 133d intercepts (cuts) the branch connected to the applicable electric equipment (Step S6). That is, the separation unit 9 is cut.

  The above is a procedure for stopping an electrical device that is currently operating in an emergency. On the other hand, it is also possible to operate an electrical device that is stopped during normal operation in an emergency in the same procedure. Furthermore, in the state recovered from the emergency, each electric device may be operated or stopped one by one based on the contents of the recovery table 135f. The processing procedure will be apparent to those skilled in the art.

  As described above, in the second embodiment, operation / stop in an emergency is controlled along a table prepared in advance (emergency table 135e). Also, at the time of recovery, the state after recovery is determined based on the recovery time table 135f prepared in advance. Since it did in this way, it is not necessary to monitor the state at the normal time and create the state management table 135b, and it is possible to obtain merits such as reduction of processing load on the home gateway 13 and traffic suppression of the home network 31.

The present invention is not limited to the above embodiments. For example, in the embodiment, on / off in an emergency and on / off at the time of recovery are controlled for each electrical device or for each outlet. In addition, it is also possible to control power supply on / off for each room. That is, the wiring branched from the distribution board 4 to each room may be individually turned on / off.
In the embodiment, an electric device is specified using a wireless tag reader. Instead of this, it is also possible to specify the electrical device by monitoring a harmonic pattern specific to the device generated in the power line 21.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 100 ... Subscriber house, 200 ... Server apparatus, 300 ... IP network, 400 ... Database, 13 ... Home gateway, 60 ... Power system, 61 ... Transformer, 2 ... Electricity meter, 4 ... Distribution board, 21 ... Power line , 22 ... air conditioner, 23 ... lighting, 24 ... refrigerator, 25 ... television, 26 ... power conditioner, 27 ... electric vehicle (EV), 28 ... PV system, 29 ... storage battery, 30 ... fuel cell, 33 ... outlet for charging , 31 ... Home network, 32 ... Terminal, 3 ... Main circuit breaker, 5 ... Power supply state determination unit, 6 ... System separation unit, 14 ... UPS, 7 ... Circuit breaker, 8 ... Current measuring device, 9 ... Separation unit, 10 ... connected device detection unit, 11 ... earthquake detection unit, 34 ... iron, 40 ... wireless tag, 131 ... input unit, 132 ... interface unit, 135 ... storage unit, 134 ... program Mori, 133 ... CPU, 136 ... access point, 135a ... device list, 135b ... status management table, 135c ... recovery permission table, 135d ... operation plan, 134a ... device identification program, 134b ... grasp program, 134c ... planning program, 134d ... Control program, 133a ... Device identification part, 133b ... Understanding part, 133c ... Planning part, 133d ... Control part, 135e ... Emergency table, 135f ... Recovery table

Claims (26)

A device identification unit that identifies each electrical device fed from the power distribution system;
A control unit for controlling the electrical equipment in accordance with a pre-designed operation plan;
A storage unit for storing the state of the specified electrical device;
A table in which each electric device is registered for permission to restore to the stored state after recovery from a power failure due to a disaster ;
The controller is
At the time of the disaster , each of the electric devices is shut down regardless of the operation plan,
The energy management system which restores the electric equipment permitted in the table to the memorized state after recovery from the power failure . A device identifying unit that identifies each electrical device that is fed from a distribution system of a building that can use commercial power and self-sufficient power;
A control unit for controlling the electrical equipment in accordance with a pre-designed operation plan;
An emergency table in which the status at the time of a disaster is registered for each electrical device, and
A recovery time table in which the state after recovery from a power failure associated with the disaster is registered for each electrical device, and
The controller is
At the time of the disaster , the state of each electric device is switched to the state registered in the emergency table regardless of the operation plan,
The energy management system which switches the state of each said electric equipment to the state registered into the said recovery time table after the recovery from the said power failure . In addition, it has an earthquake detection unit that detects earthquakes,
The energy management system according to any one of claims 1 and 2, wherein the control unit executes control at the time of the disaster when the earthquake is detected.   The energy management system according to claim 3, wherein the earthquake detection unit is capable of receiving an earthquake occurrence notification from a public communication infrastructure. The energy management system according to any one of claims 1 and 2, wherein the control unit executes control at the time of the disaster when a power failure occurs in a system that supplies commercial power.   Furthermore, the energy management system of any one of Claim 1 and 2 provided with the electrical storage apparatus which supplies self-supplied electric power to each of the said electric equipment via the said power distribution system. Furthermore, the energy management system of Claim 6 which comprises the system | strain isolation | separation part which isolate | separates the said distribution system from the system which supplies commercial power at the time of the said disaster , and supplies the said self-supplied electric power to the said distribution system. The device specifying unit
A wireless tag that is individually attached to the electrical device and stores information of the electrical device;
The energy management system according to claim 1, further comprising: a tag reader that is provided at an outlet of the power distribution system and that acquires information stored in the wireless tag. In the energy management system provided in the energy management system that manages the energy consumption of buildings,
A device identification unit that identifies each electrical device fed from the power distribution system;
A control unit for controlling the electrical equipment in accordance with a pre-designed operation plan;
A storage unit for storing the state of the specified electrical device;
A table in which each electric device is registered for permission to restore to the stored state after recovery from a power failure due to a disaster ;
The controller is
At the time of the disaster , each of the electric devices is shut down regardless of the operation plan,
An energy management device that restores the electrical device permitted in the table to the stored state after recovery from the power failure . In an energy management device provided in an energy management system that manages energy consumption of a building that can use commercial power and self-sufficient power,
A device identification unit that identifies each electrical device fed from the power distribution system;
A control unit for controlling the electrical equipment in accordance with a pre-designed operation plan;
An emergency table in which the status at the time of a disaster is registered for each electrical device, and
A recovery time table in which the state after recovery from a power failure associated with the disaster is registered for each electrical device, and
The controller is
At the time of the disaster , the state of each electric device is switched to the state registered in the emergency table regardless of the operation plan,
The energy management apparatus which switches the state of each said electric equipment to the state registered into the said table at the time of a recovery after the recovery from the said power failure . The energy management device according to any one of claims 9 and 10, wherein the control unit executes control at the time of the disaster when the earthquake is detected by an earthquake detection unit that detects an earthquake.   The energy management apparatus according to claim 11, wherein the earthquake detection unit is capable of receiving an earthquake occurrence notification from a public communication infrastructure. The energy management device according to any one of claims 9 and 10, wherein the control unit executes control at the time of the disaster when a power failure occurs in a system that supplies commercial power. And a communication unit that communicates with the electrical device,
The energy management apparatus according to claim 9, wherein the device specifying unit specifies the electric device based on information acquired through communication with the electric device. Identify each electrical device that is powered from the distribution system,
Controlling the electrical equipment according to a pre-determined operation plan,
Storing the state of the specified electrical device in a storage unit;
Stores in the storage unit a table that registers, for each electrical device, whether or not to restore to the stored state after recovery from a power failure associated with a disaster ,
At the time of the disaster , each electric device is shut down regardless of the operation plan,
A control method for restoring an electric device permitted in the table to the stored state after recovery from the power failure . Identify each electrical device that is fed from the distribution system of the building that can use commercial and self-sufficient power,
Controlling the electrical equipment according to a pre-determined operation plan,
Store the emergency table in which the state at the time of disaster is registered for each electrical device in the storage unit,
Stores the recovery table in which the state after recovery from a power failure accompanying the disaster is registered for each electric device in the storage unit,
At the time of the disaster , the state of each electric device is switched to the state registered in the emergency table regardless of the operation plan,
The control method of switching the state of each said electric equipment to the state registered into the said table at the time of recovery after recovery from the said power failure . The control method according to any one of claims 15 and 16, wherein when the earthquake is detected by an earthquake detection unit that detects an earthquake, the control at the time of the disaster is executed.   The control method according to claim 17, wherein the earthquake detection unit is capable of receiving an earthquake occurrence notification from a public communication infrastructure. The control method according to any one of claims 15 and 16, wherein when a power failure occurs in a system supplying commercial power, the control at the time of the disaster is executed. In addition, at the time of the disaster , the power distribution system is separated from the system supplying commercial power,
The control method according to any one of claims 15 and 16, wherein self-supplied power from a power storage device is supplied to each of the electrical devices via the power distribution system. A program executed by a computer provided in an energy management system for managing energy consumption of a building,
The program causes the computer to
A device identification unit that identifies each electrical device fed from the power distribution system;
A control unit for controlling the electrical equipment in accordance with a pre-designed operation plan;
The state of the specified electrical device is stored, and operates as a storage unit that stores a table for each electrical device that is allowed to restore to the stored state after recovery from a power failure due to a disaster ,
The controller is
At the time of the disaster , each of the electric devices is shut down regardless of the operation plan,
A program for restoring an electric device permitted in the table to the stored state after recovery from the power failure . A program executed by a computer provided in an energy management system for managing energy consumption of a building that can use commercial power and self-sufficient power,
The program causes the computer to
A device identification unit that identifies each electrical device fed from the power distribution system;
A control unit for controlling the electrical equipment in accordance with a pre-designed operation plan;
Operate as a storage unit that stores an emergency table in which the state at the time of a disaster is registered for each electric device, and a recovery table in which the state after the recovery from the power failure accompanying the disaster is registered for each of the electric devices,
The controller is
At the time of the disaster , the state of each electric device is switched to the state registered in the emergency table regardless of the operation plan,
The program which switches the state of each said electric equipment to the state registered into the said table at the time of recovery after recovery from the said power failure . The said control part is a program of any one of Claim 21 and 22 which performs control at the time of the said disaster, if the said earthquake is detected by the earthquake detection part which detects an earthquake.   The program according to claim 23, wherein the earthquake detection unit is capable of receiving an earthquake occurrence notification from a public communication infrastructure.   The program according to any one of claims 21 and 22, wherein the control unit executes control at the time of the disaster when a power failure occurs in a system that supplies commercial power. Further, the computer is operated as a communication unit that communicates with the electrical device,
The program according to any one of claims 21 and 22, wherein the device specifying unit specifies the electric device based on information acquired through communication with the electric device.

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