JP2017017777A - Power management device, power management system and power management method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power management device having higher user-friendliness, and a power management system and a power management method.SOLUTION: A power management device comprises a first acquisition section, a second acquisition section and a determination section. The first acquisition section acquires a measurement current waveform with a branch circuit branched from a trunk circuit connected to commercial power supply or the trunk circuit as an object circuit of measurement. The second acquisition section acquires a registration current waveform corresponding to apparatus information of a first electrical apparatus connected to the object circuit from registration information in which the apparatus information of the first electrical apparatus is associated with the registration current waveform of the first electrical apparatus. The determination section determines whether or not a second electrical apparatus not able to acquire the apparatus information or not registered with the registration information is connected to the object circuit by comparing the measurement current waveform and the registration current waveform.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to a power management apparatus, a power management system, and a power management method.

  An energy management system such as HEMS (Home Energy Management System) that calculates and visualizes the amount of power consumed by electrical equipment in a facility has been put into practical use. In an energy management system, for example, a power measurement device installed on a distribution board in a facility measures a current flowing through a target circuit to be measured, and calculates power consumption consumed by the target circuit. Furthermore, the power measurement device can monitor the power consumption amount in the facility by transmitting the power consumption information to a power management system.

  The power management system described above can recognize which circuit is connected to an electrical device compatible with HEMS. However, even if the power management system measures the current flowing through the target circuit, there is a problem that the power management system cannot recognize that an electrical device that does not support HEMS is connected to the target circuit.

JP 2014-75923 A

  The problem to be solved by the present invention is to provide a power management apparatus, a power management system, and a power management method that are more convenient.

  A power management apparatus according to an embodiment includes a first acquisition unit, a second acquisition unit, and a determination unit. The first acquisition unit acquires a measurement current waveform using a branch circuit branched from a main circuit connected to a commercial power supply or the main circuit as a measurement target circuit. The second acquisition unit includes the first electric device connected to the target circuit based on registration information in which device information of the first electric device and a registered current waveform of the first electric device are associated with each other. The registered current waveform corresponding to the device information is acquired. The determination unit cannot obtain the device information in the target circuit by comparing the measured current waveform and the registered current waveform, or a second electrical device that is not registered in the registered information is connected. Determine whether or not.

  A power management device, a power management system, and a power management method that are more convenient can be provided.

FIG. 1 is a diagram for describing a configuration example of a power management system according to an embodiment. FIG. 2 is a diagram for describing a configuration example of a distribution board according to an embodiment. FIG. 3 is a diagram for describing a configuration example of a home gateway device according to an embodiment. FIG. 4 is a diagram for describing a configuration example of a server according to an embodiment. FIG. 5 is a diagram for describing an example of registration information stored in a server according to an embodiment. FIG. 6 is a diagram for describing an example of the operation of the power management system according to the embodiment. FIG. 7 is a diagram for explaining an example of the operation of the power management system according to the embodiment. FIG. 8 is a diagram for explaining an example of the operation of the power management system according to the embodiment. FIG. 9 is a diagram for explaining an example of the operation of the power management system according to the embodiment.

  The server 3 or the home gateway device 7 serving as a power management device according to the embodiment described below includes a control unit 23 or 33. The control unit 33 having the first acquisition unit 26 or the control unit 33 including the first acquisition unit 34 is one or a main of a plurality of branch circuits branched from the main circuit connected to the commercial power supply by the distribution board. A measurement current waveform obtained by measuring a circuit as a target circuit to be measured is acquired. The control unit 23 having the second acquisition unit 27 or the control unit 33 having the second acquisition unit 35 corresponds to the device information of the first electrical device and the registered current waveform which is the current waveform of the first electrical device. A registered current waveform corresponding to the device information of the first electrical device connected to the target circuit is acquired from the attached registration information. The control unit 23 having the determination unit 28 or the control unit 33 having the determination unit 36 compares the measured current waveform with the registered current waveform, so that the second electrical device that cannot acquire the device information in the target circuit is detected. Determine if connected.

  Moreover, the control part 23 or 33 which concerns on embodiment described below subtracts a registration current waveform from a measurement current waveform, and estimates the unregistered current waveform which is a current waveform of a 2nd electric equipment.

  Further, the control unit 23 or 33 according to the embodiment described below calculates the power consumption of the first electric device from the registered current waveform, and calculates the power consumption of the second electric device from the unregistered current waveform.

  In addition, in the control unit 23 or 33 according to the embodiment described below, the registered current waveform is registered for each combination of the device identifier and the operating state of the first electric device. The second acquisition unit 27 or 35 acquires the operating state of the first electrical device, and acquires a registered current waveform corresponding to the combination of the operating state of the first electrical device and the device identifier from the registration information.

  The power management system 1 according to the embodiment described below includes a storage unit 22 or 32, a distribution board 6, a power measurement device 13, and a control unit 23 or 33. The storage unit 22 or 32 stores registration information in which device information of the first electrical device is associated with a registered current waveform that is a current waveform of the first electrical device. The distribution board 6 branches the main circuit connected to the commercial power supply into a plurality of branch circuits. The power measuring device 13 measures a current by using a branch circuit or a main circuit as a target circuit to be measured, and acquires a measured current waveform. The control unit 23 or 33 acquires the device information in the target circuit by comparing the registered current waveform corresponding to the device information of the first electric device connected to the target circuit with the measured current waveform. It is determined whether or not a second electrical device that cannot be connected is connected.

  In addition, in the power management method according to the embodiment described below, the device information of the first electrical device and the registered current waveform that is the current waveform of the first electrical device are associated with each other and stored in advance as registration information. In the power management method, a current is measured by using a branch circuit or a main circuit branched from a main circuit connected to a commercial power supply by a distribution board as a target circuit to be measured, and a measurement current waveform is acquired. The power management method cannot acquire device information in the target circuit by comparing the registered current waveform corresponding to the device information of the first electrical device connected to the target circuit with the measured current waveform. It is determined whether or not the second electric device is connected.

  Hereinafter, a power management apparatus, a power management system, and a power management method according to an embodiment will be described in detail with reference to the drawings.

  FIG. 1 shows a configuration example of a power management system 1 according to an embodiment. The power management system 1 is a system for visualizing and controlling the power consumption of electrical equipment installed in a facility. The power management system 1 is, for example, a HEMS (Home Energy Management System) or the like, and performs various processes in accordance with, for example, “ECHONET Lite (registered trademark)” which is a standard protocol of HEMS.

  The power management system 1 includes a home network system 2, a server 3, a user terminal 4, and the like. The home network system 2 and the server 3, and the user terminal 4 and the server 3 are configured to be able to communicate with each other via the network 5. The network 5 is a network such as the Internet or an intranet.

  The home network system 2 is constructed in a facility, and includes a user terminal 4, a distribution board 6, a network-compatible electrical device 9 </ b> A, and a home gateway device 7.

  The user terminal 4 accepts various screen displays and user operations. The user terminal 4 is, for example, a remote controller, a tablet terminal, a PC (Personal Computer), a mobile phone, a PDA (Personal Data Assistance), or the like. The user terminal 4 can communicate with the server 3 and the home gateway device 7 via the network 5 or the home network system 2 by wireless communication or wired communication.

  The user terminal 4 has, for example, an application for monitoring power consumption of electric devices in the home network system 2 and controlling electric devices in the home network system 2. The user terminal 4 receives data indicating the power consumption from the home gateway device 7 or the server 3 and displays a power consumption confirmation screen for visualizing the power consumption of the electric devices in the home network system 2 using an application. In addition, the user terminal 4 displays a control screen for performing control of electric devices in the home network system 2 using an application. The user terminal 4 generates a control signal for controlling an electric device in the home network system 2 in response to an operation by the user on the control screen, and transmits the control signal to the home gateway device 7. Or user terminal 4 may realize the above-mentioned service using an existing browser function. For example, a power consumption confirmation screen or an electric device control screen generated from the home gateway device 7 may be received and displayed to the user. Further, a corresponding control command may be transmitted to the home gateway device 7 based on a user operation, and a control signal for controlling the electrical device generated by the home gateway device 7 may be transmitted to the electrical device.

  The distribution board 6 branches the main circuit connected to the commercial power supply 8 into a plurality of branch circuits. FIG. 2 is an explanatory diagram for explaining a configuration example of the distribution board 6. The distribution board 6 includes a main breaker 11 provided in the main circuit, a branch breaker 12 provided in each branch circuit, and a power measuring device 13.

  The main breaker 11 and the branch breaker 12 cut off the power supply from the primary side (upstream side), for example, when an abnormal current flows in the secondary side (downstream side) circuit due to overload or short circuit. The main breaker 11 is provided between the branch point between the main circuit and the branch circuit and the commercial power supply 8. The branch breaker 12 is provided between a branch point between the main circuit and the branch circuit and an outlet to which an electrical device is connected.

  Various electric devices are connected to the plurality of branch circuits branched in the distribution board 6. The electric devices are various electric loads such as an air conditioner, a refrigerator, a washing machine, a TV, a vacuum cleaner, lighting, a water heater, and a charger for an electric vehicle.

  The power measurement device 13 acquires the measurement current waveform of the target circuit by measuring the current flowing through the circuit to be measured (target circuit). The power measurement device 13 supplies the acquired measurement current waveform to the home gateway device 7. The power measuring device 13 measures the current flowing through the target circuit for a predetermined period, for example, a predetermined number of cycles, for example, by means of a current transformer (CT) 14 provided on a wiring to be subjected to current measurement. The target circuit for current measurement is a main circuit or each branch circuit. When one electrical device is connected to the target circuit, the power measurement device 13 acquires a measurement current waveform based on a current measurement value by the CT 14 provided in the target circuit as a current waveform of a current flowing through one electrical device. To do. In addition, when a plurality of electrical devices are connected to the target circuit, the power measuring device 13 uses a current waveform that flows through the plurality of electrical devices as a measured current waveform based on a current measurement value obtained by CT provided in the target circuit. Obtained as a composite wave. The power measuring device 13 has a function of communicating with the outside via a communication function (not shown). For example, the power measurement device 13 supplies the acquired measurement current waveform or the measurement result of the current value within a predetermined period to the home gateway device 7 as measurement information.

  The electric devices connected to the branch circuit of the distribution board 6 include an electric device 9A compatible with HEMS and an electric device 9B not compatible with HEMS. The electric device 9 </ b> B cannot transmit information to the home gateway device 7. The electrical device 9A can communicate with the home gateway device 7. For example, the electrical device 9 </ b> A can transmit device information including a device identifier, which is device-specific identification information, and an operation state indicating its own operation state, to the home gateway device 7.

  The device identifier is information that can identify the electrical device 9A. The device identifier is, for example, a model number assigned to each product type, a combination of a model number and a MAC address, or a combination of a model number and an arbitrary character string.

  The operating state is information indicating the operating state of the electrical device 9A expressed by a telegram system defined in ECHONET Lite, for example. For example, the operating state may be a power state indicating whether the power of the electric device 9A is ON or OFF, or various operating states such as the power saving operation state or the standby state of the electric device 9A. Good. More specifically, when the electrical apparatus 9A is an air conditioner, the operation state may indicate various states such as cooling, heating, air blowing, dehumidification, set temperature, and air volume.

  Next, the configuration of the home gateway device 7 will be described.

FIG. 3 is a block diagram for explaining a configuration example of the home gateway device 7.
The home gateway device 7 monitors the power consumption of each electrical device in the home network system 2 and controls each electrical device. In FIG. 3, the home gateway device 7 includes a communication unit 21, a storage unit 22, and a control unit 23.

  The communication unit 21 communicates with the server 3 via the outside network 5. In addition, the communication unit 21 communicates with the distribution board 6, the user terminal 4, the power measuring device 13, each electrical device 9 </ b> A, and the like in the home network system 2. The communication unit 21 includes a wireless communication unit 24 and a wired communication unit 25.

  The wireless communication unit 24 is connected to each device that performs wireless communication with the home gateway device 7. For example, the wireless communication unit 24 performs wireless communication with the distribution board 6, the user terminal 4, each electrical device 9 </ b> A, and the like. The wireless communication unit 24 includes a transceiver that transmits and receives radio waves, infrared rays, and the like.

  The wired communication unit 25 is connected to each device that performs wired communication with the home gateway device 7. For example, the wired communication unit 25 connects the home gateway device 7 to be communicable with the external network 5 via a router (not shown). The wired communication unit 25 includes a connection port into which a LAN cable is inserted, a communication circuit, and the like.

  The storage unit 22 stores various information. The storage unit 22 is configured by a storage device such as a semiconductor memory or a hard disk drive, for example.

The control unit 23 includes a processor such as a CPU, a program memory, a working memory, and various interfaces. The control unit 23 implements various processing functions by executing a program stored in the program memory by the processor.
For example, the control unit 23 processes information transmitted to and received from the power measurement device 13 in the distribution board 6, the user terminal 4, and each electrical device. In addition, the control unit 23 processes information transmitted to and received from the server 3.

  The control unit 23 includes a first acquisition unit 26, a second acquisition unit 27, and a determination unit 28. The first acquisition unit 26 is measurement information that is a measurement result of a target circuit that is a target of measurement of one or a plurality of branch circuits branched from the main circuit connected to a commercial power source by the distribution board 6. To get. For example, the first acquisition unit 26 acquires a measurement current waveform from the power measurement device 13.

  The second acquisition unit 27 corresponds to the device information of the electrical device 9A connected to the target circuit from the registration information in which the device information of the electrical device 9A and the registered current waveform that is the current waveform of the electrical device 9A are associated with each other. Get the registered current waveform.

  The determination unit 28 determines whether or not the electrical device 9B that cannot acquire the device information is connected to the target circuit by comparing the measured current waveform and the registered current waveform.

  The control unit 23 recognizes the device identifier and the operation state of the electrical device 9A from the device information transmitted from the electrical device 9A. Further, the control unit 23 calculates the power consumption of each electric device in the home network system 2 based on the information received from the server and the measured current waveform acquired from the power measuring device 13 of the distribution board 6. . The control unit 23 generates a device list by associating the device identifier with the operation state, the installation location, and the power consumption, and stores the device list in the storage unit 22. That is, the control unit 23 generates a device list by associating the installation information and the power consumption with the device information. Further, the control unit 23 updates the device list based on the device information and the calculated power consumption.

  The device list includes a device identifier, an operating state, an installation location, and power consumption. The installation location is information that can identify the branch circuit to which the electrical device 9A is connected among the plurality of branch circuits branched by the distribution board 6, for example. In addition, for example, the installation location is information indicating a location where the electrical device 9A such as a living room or an entrance is installed. The control unit 23 acquires information input by the user from the user terminal 4 from the user terminal, and sets an installation location based on the acquired information. The power consumption is the power consumption of the electric device calculated by the control unit 23 as described above.

  The control unit 23 can display the power consumption confirmation screen and the control screen on the user terminal 4 by transmitting the device list to the user terminal 4. Moreover, the control part 23 may be the structure which produces | generates a power consumption confirmation screen and a control screen, and transmits to a user terminal. Furthermore, the control unit 23 may be configured to transmit the device list to the server 3 at a predetermined timing (for example, periodic timing or arbitrary timing).

Next, the configuration of the server will be described.
The server 3 manages various types of information related to the electrical device 9A corresponding to HEMS. For example, when the server 3 receives a control signal from the user terminal 4 via the network 5, the server 3 transmits the received control signal to the home gateway device 7 via the network 5. Thereby, the electric equipment 9A in the home network system 2 can be controlled. Further, the server 3 can acquire a device list from the home gateway device 7 via the network 5 and transmit it to the user terminal 4. Thereby, the server 3 can display the power consumption confirmation screen and the control screen on the user terminal 4. The server 3 may be configured to generate a power consumption confirmation screen and a control screen using the device list acquired from the home gateway device 7 and transmit the screen to the user terminal.

FIG. 4 is a block diagram for explaining a configuration example of the server 3.
In the configuration example illustrated in FIG. 4, the server 3 includes a communication unit 31, a storage unit 32, and a control unit 33.
The communication unit 31 communicates with the home gateway device 7 and the user terminal 4 via the network 5.

  The storage unit 32 stores various information. The storage unit 32 is configured by a storage device such as a semiconductor memory or a hard disk drive, for example. The storage unit 32 stores registration information for each electrical device. FIG. 5 is an explanatory diagram illustrating an example of registration information. The registration information is information in which a device identifier, an operating state of the electrical device, and a registered current waveform are associated with each other. In other words, the registration information is information in which the registration current waveform is associated with the device information.

  The registered current waveform is a current waveform for each operating state of the electrical device specified by the device information. That is, the registered current waveform is classified and stored for each combination of the device identifier and the operating state of the electrical device. Further, the registered current waveform may be further classified and stored in accordance with the accumulated operating time or time zone of the electric device. Still further, information indicating power consumption may be associated with each operation state of the electrical device.

The control unit 33 includes a processor such as a CPU, a program memory, a working memory, and various interfaces. The control unit implements various processing functions by executing a program stored in the program memory by the processor.
For example, the control unit 33 performs processing of information transmitted / received to / from the home gateway device 7 and the user terminal 4. The control unit 33 includes a first acquisition unit 34, a second acquisition unit 35, and a determination unit 36. The first acquisition unit 34 is measurement information that is a measurement result of a target circuit that is a target of measurement of one or a plurality of branch circuits branched from the main circuit connected to a commercial power source by the distribution board 6. To get. For example, the first acquisition unit 34 acquires the measurement current waveform from the power measurement device 13 from the home gateway device 7.

  The second acquisition unit 35 corresponds to the device information of the electrical device 9A connected to the target circuit from the registration information in which the device information of the electrical device 9A and the registered current waveform that is the current waveform of the electrical device 9A are associated with each other. Get the registered current waveform.

  The determination unit 36 compares the measured current waveform with the registered current waveform to determine whether or not a second electrical device that cannot acquire device information is connected to the target circuit.

  For example, the control unit 33 acquires a device identifier and an operating state from the home gateway device 7 and a measured current waveform of the target circuit. The control unit 33 acquires the registered current waveform corresponding to the acquired device identifier and the operating state by referring to the registration information. The control unit 33 compares the measured current waveform with the registered current waveform that is the current waveform of the electrical device 9A that is connected to the target circuit and has been able to recognize the device identifier and the operation state. It is determined whether or not the state cannot be recognized or an unregistered electrical device 9B is connected to the registration information. Further, the control unit 33 subtracts the registered current waveform from the measured current waveform, thereby obtaining a waveform of a current flowing through the electric device 9B not compatible with the HEMS connected to the target circuit or the unregistered electric device 9B. An unregistered current waveform can be estimated.

Next, the operation of the power management system 1 will be described with reference to FIGS.
FIG. 6 is a flowchart for explaining the operation of updating the device list of the home gateway device 7. The device list may be updated periodically, or when the electric device 9A newly enters the home network system 2, when the information indicating that the operating state has changed is received from the electric device 9A, It may be updated at a timing such as when a browsing request is received. The control unit 23 of the home gateway device 7 acquires device information from the electric device 9A (step S11). The control unit 23 recognizes the device identifier of the electric device 9A that transmitted the device information from the acquired device information (step S12). The control unit 23 recognizes the operating state of the electrical device 9A that has transmitted the device information from the acquired device information (step S13).

  Based on the recognized operating state, the control unit 23 updates the operating state of the electrical device 9A that has transmitted the device information in the device list (step S14). For example, the control unit 23 overwrites the operation state recognized in step S13 with the operation state associated with the device identifier recognized in step S12 of the device list. Thereby, the control part 23 can update the information of an apparatus list sequentially.

  FIG. 7 is a flowchart for explaining the operation of calculating the power consumption of the home gateway device 7.

  The control unit 23 acquires the measurement current waveform of the target circuit from the power measurement device 13 (step S21). For example, the control unit 23 specifies one of the measurement current waveforms of the plurality of branch circuits transmitted from the power measurement device 13 as the target circuit, and recognizes the measurement current waveform of the target circuit to measure the target circuit. Get the current waveform.

  The control unit 23 acquires the device identifier and the operation state of the electrical device connected to the target circuit (step S22). That is, the control unit 23 recognizes the specific information for specifying the target circuit, refers to the device list, and specifies the electrical device 9A connected to the target circuit specified by the recognized specific information and corresponding to the HEMS. . The control unit 23 acquires the device identifier and the operating state of the specified electrical device 9A.

  The control unit 23 transmits the device identifier and the operating state recognized in step S22 and the measured current waveform acquired in step S21 to the server 3 (step S23). The control unit 23 refers to the device list stored in the storage unit 22, identifies all the electrical devices 9A connected to the target circuit, acquires device identifiers and operation states, and transmits them to the server 3. To do. The control unit 23 may be configured to transmit the device information of all the electrical devices 9A corresponding to the HEMS connected to the target circuit and the measurement current waveform of the target circuit to the server 3. Further, the device information may include power consumption of the electrical device 9A.

  The control unit 23 of the home gateway device 7 acquires the current waveform transmitted from the server 3 (step S24). For example, when it is determined by the server 3 that another electrical device is connected to the target circuit, the control unit 23 acquires a registered current waveform and an unregistered current waveform. Moreover, the control part 23 acquires a registration current waveform, when it is judged by the server 3 that another electric equipment is not connected to the object circuit. If the server 3 has a function of calculating power consumption from the current waveform, the power consumption may be directly acquired from the server 3. For example, if the server 3 determines that no other electrical device is connected to the target circuit, power consumption. Also, for example, when it is determined that no other electrical device is connected to the target circuit, a notification to that effect is obtained from the server 3, the power consumption of the target circuit is calculated from the measured waveform of the target circuit, and the electrical device 9A It is good also as power consumption.

  The control unit 23 calculates the power consumption of each electrical device (step S25). For example, the control unit 23 calculates power consumption per unit time from the peak value of the current waveform. The unit time may be any unit. Specifically, the control unit 23 calculates the power consumption of each electrical device 9A connected to the target circuit based on the registered current waveform. Further, the control unit 23 calculates the power consumption of the electric device 9B connected to the target circuit based on the unregistered current waveform. When a plurality of electrical devices 9B are connected to the target circuit, the total power consumption value of the plurality of electrical devices 9B connected to the target circuit is calculated.

  When the power consumption of the device can be acquired from the target circuit or the electric device 9A, the calculation step may be omitted as appropriate. For example, when it is determined that the electrical device 9B is connected to the target circuit, a value obtained by subtracting the power consumption of the electrical device 9A from the power consumption of the target circuit may be calculated as the determined power consumption of the electrical device 9B. .

  The control unit 23 updates the device list using the power consumption calculated in step S25 (step S26). That is, the control unit 23 overwrites the information indicating the power consumption in the device list with the power consumption calculated from the registered current waveform in step S25. Furthermore, the control part 23 produces | generates the apparatus identifier corresponding to the electric equipment 9B, and the information which shows a branch circuit as apparatus information of the electric equipment 9B. The control unit 23 associates the generated device information with the power consumption calculated from the unregistered current waveform in step S25 and adds it to the device list. The device information of the electrical device 9B may be configured to be set by user input. Thereby, the control part 23 can be made into the state which can monitor the power consumption of the electric equipment 9B connected to the object circuit with the user terminal 4. FIG.

  The server 3 may generate the device identifier corresponding to the electrical device 9B and the information indicating the branch circuit as the device information of the electrical device 9B, and the control unit 23 may acquire the device identifier. Furthermore, when the power consumption can be acquired from the power measurement device 13 or the electric device 9A, the control unit 23 may update the value using the value acquired from the power measurement device 13 or the electric device 9A.

  FIG. 8 is a flowchart for explaining the operation of the server 3. Moreover, FIG. 9 is explanatory drawing for demonstrating the process which recognizes the electric equipment connected from the measurement current waveform.

  As illustrated in FIG. 8, the control unit 33 of the server 3 acquires a device identifier, an operation state, and a measured current waveform from the home gateway device 7 (step S31). A waveform 41 in FIG. 9 shows an example of a measured current waveform. The measurement current waveform is a composite wave of the current waveform of the electrical device connected to the target circuit. In order to calculate the power consumption for each electrical device, it is necessary to acquire the current waveform for each device from the measured current waveform.

  The control unit 33 extracts a registered current waveform corresponding to the device identifier and the operation state from the registration information (step S32). A waveform 42 in FIG. 9 shows an example of a registered current waveform. The control unit 33 refers to the registration information and extracts a registered current waveform associated with the device identifier and the operation state acquired in step S31. Thereby, the control unit 33 can acquire the registered current waveform of the electric device 9A connected to the target circuit.

  The control unit 33 compares the measurement current waveform, which is the measurement result of the current of the target circuit that is the target of measurement, with the registered current waveform that is the current waveform of the electrical device connected to the target circuit, thereby obtaining the target circuit. It is determined whether or not the home gateway device 7 cannot acquire the device identifier or another unregistered electric device is connected (step S33). That is, the control unit 33 compares the measured current waveform with the registered current waveform that is the current waveform of the electrical device 9A that is connected to the target circuit and can recognize the device identifier and the operation state, thereby obtaining the device identifier. In addition, it is determined whether or not the unregistered electric device 9B that cannot recognize the operation state, or the device identifier and the operation state can be acquired, but the unregistered electric device 9A is connected to the registration information.

  If it is determined that another electrical device is connected to the target circuit (step S33, YES), the control unit 33 subtracts the registered current waveform from the measured current waveform to estimate an unregistered current waveform (step S34). . That is, the control unit 33 subtracts the registered current waveform of the electrical device 9A corresponding to HEMS from the measured current waveform, thereby not registering in the electrical device 9B that is connected to the target circuit and not compatible with HEMS or registration information. An unregistered current waveform that is a waveform of a current flowing through the electric device 9A can be estimated. A waveform 43 in FIG. 9 shows an example of an unregistered current waveform.

  The control unit 33 transmits the registered current waveform acquired in step S32 and the unregistered current waveform estimated in step S34 to the home gateway device 7 (step S35). Note that the control unit 33 may transmit the registered current waveform and the device identifier to the home gateway device 7 in a state in which the registered current waveform is associated with the device identifier. As a result, the control unit 33 can cause the home gateway device 7 to recognize which electric device 9 </ b> A has the registered current waveform.

  If it is determined that an unregistered electrical device is not connected to the target circuit (NO in step S33), the control unit 33 transmits the registered current waveform acquired in step S32 to the home gateway device 7 (step S36). ). Instead of the registered current waveform, power consumption may be calculated and transmitted to the home gateway device 7 in a state associated with the device information.

  According to the configuration described above, the server 3 of the power management system 1 can recognize the measurement current waveform that is the measurement result of the current of the target circuit that is the measurement target, and the device identifier and the operating state that are connected to the target circuit. By comparing with the registered current waveform that is the current waveform of the electric device that has been made, it is determined whether the device identifier and the operating state cannot be recognized, or whether an unregistered electric device is connected to the registration information .

  Thereby, the server 3 determines whether the device identifier cannot be recognized in addition to the electrical device whose device identifier can be recognized by the target circuit, or whether an unregistered electrical device is connected to the registration information. can do. That is, the server 3 can recognize that an electrical device compatible with HEMS is connected to the target circuit. As a result, a more convenient power management apparatus, power management system, and power management method can be provided.

  In the above embodiment, the control unit 23 of the home gateway device 7 includes the first acquisition unit 26, the second acquisition unit 27, and the determination unit 28, and the control unit 33 of the server 3 is the first acquisition unit 34, Although it has been described that the configuration includes the second acquisition unit 35 and the determination unit 36, the configuration is not limited thereto. Any one of the home gateway device 7 and the server 3 may be configured to include a first acquisition unit, a second acquisition unit, and a determination unit. That is, the control unit 23 of the home gateway device 7 includes the first acquisition unit 26, the second acquisition unit 27, and the determination unit 28, or the control unit 33 of the server 3 includes the first acquisition unit 34 and the second acquisition unit 34. The present invention can be implemented as long as the configuration includes the acquisition unit 35 and the determination unit 36.

  Furthermore, the server 3 subtracts a registered current waveform, which is a current waveform of an electrical device connected to the target circuit, from a measured current waveform that is a measurement result of the current of the target circuit that is a measurement target, thereby And an unregistered current waveform that is a current waveform of an electrical device that is not recognized in the registered information and is not registered in the registered information. That is, the server 3 of the power management system 1 is not registered in the device list by subtracting the registered current waveform of the electrical device registered in the device list in the home gateway device 7 from the measured current waveform of the target circuit. Alternatively, an unregistered current waveform of an electric device not registered in the registration information is estimated.

  As a result, the home gateway device 7 can calculate the power consumption of the electrical device that is not registered in the device list from the unregistered current waveform. Further, the home gateway device 7 can calculate the power consumption for each electric device registered in the device list from the registered current waveform. As a result, the home gateway device 7 calculates the power consumption of each electrical device compatible with the HEMS connected to the target circuit and the power consumption of the electrical device that does not support HEMS or is not registered in the registration information. be able to.

  In the above-described embodiment, the power management system 1 has been described with respect to the example in which the current is measured using the branch circuit as a target circuit. However, the present invention is not limited to this configuration. The power management system 1 may be configured to measure current using the main circuit as a target circuit. In this case, the home gateway device 7 sends the measured current waveform acquired from the main circuit and the device identifier and the operation state of the electric device 9A connected to the main circuit and the branch circuit branched from the main circuit to the server 3. Send. The server 3 acquires the registered current waveform of each electrical device 9A connected to the main circuit and the branch circuit branched from the main circuit based on the received device identifier and the operation state, and the registered current is acquired from the acquired measured current waveform. Subtract waveform. Thereby, the server 3 can estimate the unregistered current waveform of the electrical device 9B connected to the main circuit and the branch circuit branched from the main circuit.

  The server 3 may be configured to estimate the type and operating state of the electrical device 9B connected to the target circuit by comparing the unregistered current waveform with the registered current waveform. For example, the server 3 calculates the similarity between the unregistered current waveform and each registered current waveform, and identifies the device identifier and the operation state corresponding to the registered current waveform with the highest similarity. The server 3 may be configured to transmit the specified device identifier, the operation state, and the unregistered current waveform to the home gateway device 7 so as to be registered in the device list.

  In the above embodiment, the home gateway device 7 transmits the measurement current waveform, the device identifier, and the operation state to the server, the server 3 specifies the registered current waveform based on the device identifier and the operation state, and the measurement current Although it has been described that the unregistered current waveform is estimated by subtracting the registered current waveform from the waveform, the present invention is not limited to this configuration. The home gateway device 7 may be configured to acquire a registered current waveform from the server 3 by transmitting the device identifier and the operation state of the electrical device connected to the target circuit to the server 3. In this case, the home gateway device 7 estimates the unregistered current waveform by subtracting the registered current waveform acquired from the measured current waveform.

  In addition, when the home gateway device 7 is configured to acquire the registered current waveform from the server 3 in this way, the home gateway device 7 includes the measured current waveform of the target circuit and the registered current waveform of the electric device connected to the target circuit. The configuration may be such that when the difference is equal to or greater than a predetermined value, it is determined that another electrical device is connected to the target circuit.

  In the above embodiment, the home gateway device 7 is configured to acquire information input by the user from the user terminal 4 from the user terminal and set a branch circuit in the device list based on the acquired information. However, it is not limited to this configuration. The device information transmitted from the electrical device 9A to the home gateway device 7 may include a division method indicating the installation location. Still further, the home gateway device 7 may be configured to set an installation location set as a default in the device list according to the type of the electrical device.

  In the above-described embodiment, the server 3 has been described as having a configuration in which the registered current waveform corresponding to the device identifier and the operation state acquired from the home gateway device 7 is acquired from the registration information. However, the configuration is not limited to this configuration. When the information corresponding to the device identifier and the operation state acquired from the home gateway device 7 is not stored as registration information, the server 3 accesses the network 5 and registers the current corresponding to the device identifier and the operation state from the network 5. The structure which acquires a waveform may be sufficient. Further, the server 3 may be configured to register the registered current waveform acquired from the network 5, the device identifier, and the operation state as registration information in association with each other.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

  DESCRIPTION OF SYMBOLS 1 ... Power management system, 2 ... Home network system, 3 ... Server, 4 ... User terminal, 5 ... Network, 6 ... Distribution board, 7 ... Home gateway apparatus, 8 ... Commercial power supply, 9A ... Electric equipment, 9B ... Electricity Equipment: 11 ... Main circuit breaker, 12 ... Branch breaker, 13 ... Power measuring device, 14 ... Current transformer for instrument, 21 ... Communication unit, 22 ... Storage unit, 23 ... Control unit, 24 ... Wireless communication unit, 25 ... Wired Communication unit, 26 ... first acquisition unit, 27 ... second acquisition unit, 28 ... determination unit, 31 ... communication unit, 32 ... storage unit, 33 ... control unit, 34 ... first acquisition unit, 35 ... first 2 acquisition units, 36...

Claims (6)

A first acquisition unit that acquires a measurement current waveform using a branch circuit branched from a main circuit connected to a commercial power supply or the main circuit as a measurement target circuit;
Registration corresponding to device information of the first electrical device connected to the target circuit from registration information in which device information of the first electrical device and a registered current waveform of the first electrical device are associated with each other A second acquisition unit for acquiring a current waveform;
Whether the device information cannot be acquired in the target circuit by comparing the measured current waveform and the registered current waveform, or whether a second electric device that is not registered in the registered information is connected. A judgment unit for judging;
A power management apparatus comprising:   The power management apparatus according to claim 1, further comprising: an estimation unit that subtracts the registered current waveform from the measured current waveform to estimate an unregistered current waveform of the second electrical device.   3. The power consumption calculating unit according to claim 2, further comprising: a power consumption calculating unit that calculates power consumption of the first electrical device from the registered current waveform and calculates power consumption of the second electrical device from the unregistered current waveform. Power management device. The registered current waveform is registered for each combination of a device identifier and an operating state of the first electrical device,
The second acquisition unit acquires an operation state of the first electric device, and acquires a registered current waveform corresponding to a combination of the operation state of the first electric device and a device identifier from the registration information. Item 4. The power management apparatus according to Item 1. A storage unit that stores registration information in which device information of the first electrical device and a registered current waveform of the first electrical device are associated;
A distribution board that branches the main circuit connected to the commercial power supply into a plurality of branch circuits;
A power measurement unit that acquires a measurement current waveform using the branch circuit or the main circuit as a measurement target circuit; and
The device information cannot be acquired in the target circuit by comparing the registered current waveform corresponding to the device information of the first electrical device connected to the target circuit and the measured current waveform. Or a determination unit that determines whether or not a second electrical device that is not registered in the registration information is connected;
A power management system comprising: Storing the device information of the first electrical device and the registered current waveform of the first electrical device in association with each other as registration information;
Obtain a measurement current waveform using a branch circuit branched from a main circuit connected to a commercial power source or the main circuit as a measurement target circuit,
The device information cannot be acquired in the target circuit by comparing the registered current waveform corresponding to the device information of the first electrical device connected to the target circuit and the measured current waveform. Or determining whether or not a second electrical device not registered in the registration information is connected,
Power management method.