JPWO2015079493A1 - Energy management system, power measuring device, load device, communication adapter, system controller, energy management method and program - Google Patents

Abstract

The power measuring device (3) holds a suppression level determination condition for determining a suppression level of power consumed in a specific demand area. The power measuring device (3) measures the power consumed in the demand area and determines the suppression level based on the measured power and the suppression level determination condition. Then, the power measuring device (3) transmits the determined suppression level to the load device (4a, 4b). The load device (4a, 4b) holds the priority level assigned to the own device acquired through communication with the system controller (2). When the load device (4a, 4b) receives the suppression level transmitted by the power measuring device (3), it controls the operation of the device body (40a, 40b) based on the received suppression level and the priority level. .

Description

  The present invention relates to an energy management system, a power measuring device, a load device, a communication adapter, a system controller, an energy management method, and a program.

  Control that suppresses the power consumption of load equipment used in this household (so-called peak cut control) in order to prevent the power supply from the commercial power source from being cut off by the current limiter installed in the home of a general household It has been known.

  For example, Patent Documents 1 to 3 disclose techniques for realizing peak cut control with a configuration of a self-supporting distributed system.

  In the peak cut control in the self-supporting distributed system, the load device performs an operation in which the power consumption is independently suppressed according to the measurement value of the power measurement device.

JP 2012-205426 A JP 2009-153336 A JP 2004-363661 A

  The peak cut control in the above self-supporting distributed system has the merit that it is more immediate than the peak cut control in the centralized management system, but the problem is that the degree of power suppression becomes uniform in all load devices. There is.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide an energy management system and the like that can realize peak cut control in accordance with user preferences and lifestyle patterns.

In order to achieve the above object, an energy management system according to the present invention includes:
An energy management system comprising a system controller, a power measuring device, and a load device,
The power measuring device is
Holds the suppression level determination condition to determine the suppression level of power consumed in a specific demand area,
Measure the power consumed in the demand area,
Based on the measured power and the suppression level determination condition, determine the suppression level, and transmit the determined suppression level to the load device,
The load device is
Holding the priority level assigned to the own device acquired by communication with the system controller;
When the suppression level transmitted by the power measuring device is received, the operation of the device itself is controlled based on the received suppression level and the priority level.

  According to the present invention, it is possible to realize peak cut control in accordance with user preferences and life patterns.

It is a figure showing the whole energy management system composition concerning an embodiment of the present invention. It is a block diagram which shows the structure of the electric power sensor in this embodiment. It is a block diagram which shows the structure of the system controller in this embodiment. It is a figure which shows the memory content of the data storage part with which the system controller of this embodiment is provided. It is a figure which shows the function structure of the control part with which the system controller of this embodiment is provided. It is a block diagram which shows the structure of the terminal device of this embodiment. It is a block diagram which shows the structure of the communication adapter of the power measuring device of this embodiment. It is a figure which shows an example of the suppression level discrimination | determination table of this embodiment. It is a figure which shows an example of the communication sequence between an electric power measurement apparatus and a load apparatus. It is a block diagram which shows the structure of the communication adapter of the apparatus of this embodiment. It is a figure for demonstrating a priority level. It is a figure which shows an example of the content of suppression control. It is a flowchart which shows the procedure of the suppression control process of this embodiment. It is a figure which shows the communication sequence between a system controller and a load apparatus at the time of notifying a priority level. It is a figure which shows the communication sequence between the system controller and power measuring device at the time of notifying suppression level discrimination conditions. It is a figure which shows the modification of a priority level table. It is a figure which shows the modification of a suppression level discrimination | determination table.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram showing an overall configuration of an energy management system 1 according to an embodiment of the present invention. The energy management system 1 is a so-called HEMS (Home Energy Management System) that manages electric power used in a general household. The energy management system 1 includes a system controller 2, a power measuring device 3, a plurality of devices 4 (devices 4a, 4b,...), A terminal device 5, an EV system 6, a hot water supply system 7, a power generation system 8, Is provided.

  The device 4 (devices 4a, 4b,...) Includes a device main body 40 (device main bodies 40a, 40b,...) And a communication adapter 41 (41a, 41b,...). For example, the device main body 40 and the communication adapter 41 are electrically connected by an interface conforming to a standardized serial communication standard. The apparatus 4 is an electric apparatus installed in the house H such as an illuminator, an air conditioner, a refrigerator, an IH cooking heater, a rice cooker, a microwave oven, a floor heating system, and the like. Each device 4 is connected to a power line D5 that supplies power from the commercial power source 9 or the like.

  Each device 4 is communicably connected to the system controller 1 via a wireless network (not shown) constructed in the house H by each communication adapter 41. This wireless network is, for example, a network conforming to ECHONET Lite. Details of the communication adapter 41 will be described later.

  The power measuring device 3 measures the amount of power consumed in this home (demand area). The power measuring device 3 includes a power sensor 30 and a communication adapter 31. For example, the power sensor 30 and the communication adapter 31 are electrically connected by an interface conforming to a standardized serial communication standard.

  As shown in FIG. 2, the power sensor 30 includes a voltage measurement unit 300, a current measurement unit 301, an A / D conversion unit 302, a power calculation unit 303, and an external interface 304. The voltage measurement unit 300 measures the voltage value on the power line D5, and the current measurement unit 301 measures the current value of the current flowing through the power line D5. The A / D conversion unit 302 performs A / D (Analog / Digital) conversion on the measured voltage value and current value. The power calculation unit 303 calculates a power value (power amount integrated value) from the A / D converted voltage value and current value. The external interface 304 is connected to the communication adapter 31 and transmits the power value (power consumption) calculated by the power calculation unit 303 to the communication adapter 31. Details of the communication adapter 31 will be described later.

  Returning to FIG. 1, the system controller 2 is installed at an appropriate location in the house H, and monitors the power consumption in this home. Further, the system controller 2 performs operation control and monitoring of the operation state of each device 4, EV system 6, hot water supply system 7, and power generation system 8. As shown in FIG. 3, the system controller 2 includes a device communication unit 20, a terminal communication unit 21, a data storage unit 22, and a control unit 23. Each component of the system controller 2 is connected to each other via a bus 24.

  The device communication unit 20 includes, for example, a communication interface such as a wireless LAN card, and is connected to the above-described wireless network. Under the control of the control unit 23, the power measurement device 3, each device 4, the EV system 6, and the hot water supply system 7 are connected. And wireless data communication with the power generation system 8.

  The terminal communication unit 21 includes a predetermined short-range wireless communication interface, and conforms to the terminal device 5 and a well-known wireless LAN standard such as Wi-Fi (registered trademark) under the control of the control unit 23. Perform data communication.

  The data storage unit 22 is configured by, for example, a readable / writable nonvolatile semiconductor memory such as a flash memory. As illustrated in FIG. 4, the data storage unit 22 stores a device state table 220, a priority level table 221, and a suppression level determination table 222.

  The device state table 220 is a data table in which information for controlling each device 4, the EV system 6, the hot water supply system 7, and the power generation system 8 (hereinafter collectively referred to as controlled devices) is stored. In the device state table 220, for example, records including items such as device addresses, device names, and operation state information are registered for the number of controlled devices to be installed.

  The device address is a communication address assigned to each controlled device. The device name indicates a general name / common name of the controlled device, such as “lighting”, “air conditioner”, “eco-cute”, and the like. This is used to allow the user to recognize when displaying.

  The operation state information is information indicating the current operation state of the controlled device. For example, the power state (power on / off), operation presence / absence (during operation / stop), operation mode, setting information, abnormality detection presence / absence Etc. including information. For example, in the case of an air conditioner, the operation mode includes cooling, heating, air blowing, dehumidification, and the like, and in the case of a rice cooker, rice cooking, heat retention, and the like are applicable. Further, the setting information corresponds to a setting temperature in an air conditioner or the like. The presence / absence of abnormality detection is information indicating whether an abnormality is detected in the controlled device.

  Details of the priority level table 221 and the suppression level determination table 222 will be described later.

  Further, although not shown, the data storage unit 22 also stores various programs such as a program for controlling each controlled device and a program for monitoring the operation state of each controlled device. Further, the data storage unit 22 stores data used when executing these programs, data generated by executing these programs, and the like.

  Returning to FIG. 3, the control unit 23 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like (none of which are shown), and controls the system controller 2 in an integrated manner. To do. As shown in FIG. 5, the control unit 23 includes a peak cut setting reception unit 230, a priority level notification unit 231, and a suppression level determination condition notification unit 232 as functions unique to the present invention. Details of these functional units will be described later.

  Note that the system controller 2 and a not-shown HGW (Home GateWay) installed in the house H may be connected to each other so as to be capable of data communication by wire or wirelessly. In this way, the system controller 2 can perform data communication with a server connected to an external network such as the Internet.

  Returning to FIG. 1, the terminal device 5 is a portable personal computer such as a tablet PC. As illustrated in FIG. 6, the terminal device 5 includes an input unit 50, a display unit 51, a communication unit 52, a data storage unit 53, and a control unit 54. Each component of the terminal device 5 is connected to each other via a bus 55.

  The input unit 50 includes a touch panel, a touch pad, and the like, and performs an operation of accepting an operation input by a user. The display unit 51 includes a liquid crystal display and the like, and under the control of the control unit 54, displays a monitoring screen indicating the operating state of the controlled device and the amount of power consumption in the home, and displays various screens for user operations. indicate.

  The communication unit 52 includes a predetermined wireless communication interface. For example, the communication unit 52 performs data communication with the system controller 2 in accordance with a well-known wireless LAN standard such as Wi-Fi (registered trademark).

  The data storage unit 53 is configured by, for example, a readable / writable nonvolatile semiconductor memory such as a flash memory. The data storage unit 53 accesses the system controller 2 to obtain information on the amount of power consumption in the home and the operating state of each controlled device, and various settings for power management, etc. Various programs including are stored. The data storage unit 53 stores data used when executing these programs, data generated by executing these programs, and the like.

  Although not shown, the control unit 54 includes a CPU, a ROM, a RAM, and the like, and comprehensively controls the terminal device 5.

  Returning to FIG. 1, the EV system 6 is a system that charges and discharges the storage battery mounted on the electric vehicle 61 by the power conditioner 60. The power conditioner 60 is supplied with power from the commercial power supply 9 and the like through the power line D1, the distribution board 10, and the power line D2. The power conditioner 60 supplies power from the commercial power source 9 or the like to the storage battery when the storage battery is charged. Moreover, the power conditioner 60 supplies the electric power from a storage battery to the electricity distribution panel 10 via the power line D3 at the time of discharge.

  The power conditioner 60 is electrically connected to the communication adapter 62 through an interface that conforms to a standardized serial communication standard, for example. The communication adapter 62 is communicably connected to the system controller 2 via the above-described wireless network built in the house H.

  In addition, you may further add a stationary storage battery system to the structure of the energy management system 1 as a system which charges and discharges a storage battery.

  The hot water supply system 7 includes a hot water storage tank unit and a heat pump unit (not shown), and performs a hot water supply operation with electric power supplied from the commercial power supply 9 via the power line D5. A control device (not shown) included in the heat pump unit is electrically connected to the communication adapter 70 through, for example, an interface conforming to a standardized serial communication standard. The communication adapter 70 is communicably connected to the system controller 2 via a wireless network constructed in the house H.

  The power generation system 8 includes a photovoltaic power generation panel (PV panel) and a power conditioner, although none of them is shown. The power generation system 8 converts the electricity generated by the PV panel from DC power to AC power using a power conditioner, and supplies the electricity to the distribution board 10 via the power line D4. The power conditioner of the power generation system 8 is electrically connected to the communication adapter 80 through an interface that conforms to a standardized serial communication standard, for example. The communication adapter 80 is communicably connected to the system controller 2 via the above-described wireless network built in the house H.

  Next, the peak cut control in the energy management system 1 will be specifically described. Here, the peak cut control is a management in this home in order to prevent the electric power supply from the commercial power source 9 from being interrupted by a current limiter (not shown) installed in the distribution board 10. Control that suppresses the power consumption of the target load device. Here, the load devices to be managed indicate controlled devices excluding the power generation system 8, that is, the respective devices 4, the EV system 6 (during charging), and the hot water supply system 7.

<Operation of Power Measuring Device 3>
First, operation | movement of the electric power measurement apparatus 3 in peak cut control is demonstrated. FIG. 7 is a block diagram illustrating a configuration of the communication adapter 31 connected to the power sensor 30. The communication adapter 31 includes a communication interface 310, a device interface 311, a data storage unit 312, and a control unit 313. Each component of the communication adapter 31 is connected to each other via a bus 314.

  The communication interface 310 includes a communication interface such as a wireless LAN card, and connects to the above-described wireless network built in the house H. The communication interface 310 performs wireless data communication with the system controller 2 and each load device (each device 4, the EV system 6, and the hot water supply system 7) under the control of the control unit 313.

  The device interface 311 is an interface for electrically connecting the communication adapter 31 and the power sensor 30. In the present embodiment, communication between the communication adapter 31 and the power sensor 30 is performed according to a standardized serial communication standard.

  The data storage unit 312 is configured by, for example, a readable / writable nonvolatile semiconductor memory such as a flash memory. The data storage unit 312 stores contract restriction data 3120 and a suppression level determination table 3121. In addition, the data storage unit 312 stores a program for communicating with the system controller 2, a program for notifying each load device of a suppression level, and the like. The data storage unit 312 stores data used when executing these programs, data generated by executing these programs, and the like.

  The contract restriction data 3120 is data indicating the power consumption restriction in the contract between the user and the power company. In the present embodiment, the contract limit data 3120 indicates a value (limit power amount) obtained by converting a so-called contract amperage value into a power amount in a predetermined time (for example, 30 seconds). The contract restriction data 3120 is stored in the data storage unit 312 by a construction worker or the like when the communication adapter 31 is installed.

  The suppression level determination table 3121 is a data table in which a condition (determination condition) for determining the suppression level is defined. The suppression level is an index indicating the degree to which the power consumed in this home is suppressed.

  In the present embodiment, as a determination condition, the ratio of the power consumption amount (hereinafter referred to as a measured value) transmitted from the power sensor 30 to the above-described limit power amount (hereinafter referred to as a limit value) is in a range of 0 to 5. It is defined for each. FIG. 8 shows an example of the suppression level determination table 3121 in the present embodiment. In FIG. 8, “K” indicates the ratio of the measured value to the limit value.

  The communication adapter 31 acquires the contents of the suppression level determination table 3121 through communication with the system controller 2. More specifically, when the control unit 313 of the communication adapter 31 receives the suppression level determination condition notification data from the system controller 2 via the communication interface 310, the contents included in the received suppression level determination condition notification data, that is, The suppression level determination condition is extracted. Then, the control unit 313 stores the extracted suppression level determination condition in the suppression level determination table 3121.

  The control unit 313 includes a CPU, a ROM, a RAM, and the like (all not shown), and controls the communication adapter 31 in an integrated manner. Specifically, as described above, the control unit 313 acquires the contents of the suppression level determination table 3121 through communication with the system controller 2. In addition, when the control unit 313 receives the measurement value transmitted from the power sensor 30 via the device interface 311, the control unit 313 stores data (measurement value data) in which the received measurement value is stored in the system controller 2 via the communication interface 310. Send.

  Further, the control unit 313 obtains the ratio (K) of the measurement value to the limit value, and uses the obtained K to determine the suppression level with reference to the suppression level determination table 3121. The control unit 313 compares the determined suppression level with the suppression level before determination (that is, the previously determined suppression level). As a result, when the two are different, the control unit 313 notifies the suppression level to all load devices. Specifically, the control unit 313 broadcasts data (suppression level notification data) storing the determined suppression level to all load devices (devices 4a, 4b,..., EV system 6, hot water supply system 7). To do.

  An example of a communication sequence between the power measuring device 3 and each load device in the notification of the suppression level is shown in FIG.

<Operation of device 4>
Next, the operation of the device 4 in the peak cut control (mainly the operation of the communication adapter 41) will be described. The configuration and function of the communication adapter (that is, communication adapter 62, communication adapter 70) of other load devices (that is, EV system 6, hot water supply system 7) are the same as the configuration and function of communication adapter 41 described below. It is.

  FIG. 10 is a block diagram illustrating a configuration of the communication adapter 41 of the device 4. The communication adapter 41 includes a communication interface 401, a device interface 402, a data storage unit 403, and a control unit 404. Each component of the communication adapter 41 is connected to each other via a bus 405.

  The communication interface 401 includes a communication interface such as a wireless LAN card, and connects to the above-described wireless network built in the house H. The communication interface 401 performs wireless data communication with the system controller 2 and the power measurement device 3 under the control of the control unit 404.

  The device interface 402 is an interface for electrically connecting the communication adapter 41 and the device body 40. In the present embodiment, communication between the communication adapter 41 and the device main body 40 is performed in accordance with a standardized serial communication standard.

  The data storage unit 403 is configured by, for example, a readable / writable nonvolatile semiconductor memory such as a flash memory. The data storage unit 403 stores priority level data 410. In addition, the data storage unit 403 also stores various programs such as a program for communicating with the system controller 2 and the power measuring device 3 and a program for performing peak cut control on the device main body 40. The data storage unit 403 stores data used when executing these programs, data generated by executing these programs, and the like.

  The priority level data 410 is data indicating the priority level of the device 4 (more specifically, the device body 40 connected to the communication adapter 41). The priority level is an index indicating the degree of priority regarding the operation (use) of the device 4. An example of the priority level is shown in FIG.

  The communication adapter 41 acquires this priority level through communication with the system controller 2. More specifically, when the control unit 404 of the communication adapter 41 receives the priority level notification data transmitted from the system controller 2 via the communication interface 401, the content included in the received priority level notification data, that is, priority Extract levels. Then, the control unit 404 stores the extracted priority level in the data storage unit 403 as priority level data 410.

  The control unit 404 includes a CPU, a ROM, a RAM, and the like (all not shown), and controls the communication adapter 41 as a whole. Specifically, the control unit 404 acquires the priority level through communication with the system controller 2 as described above.

  When the control unit 404 receives the control command transmitted from the system controller 2 via the communication interface 401, the control unit 404 transmits the control command to the device main body 40 via the device interface 402. Thereby, the device main body 40 performs an operation according to the control command from the system controller 2. Further, when the operation state of the device main body 40 changes, the control unit 404 transmits data notifying that effect (state change data) to the system controller 2 via the communication interface 401.

  Furthermore, as an operation unique to the present invention, when the control unit 404 receives the above-described suppression level notification data transmitted from the power measurement device 3 via the communication interface 401, the control unit 404 extracts the suppression level from the received suppression level notification data. To do. And the control part 404 is the content (suppression control content) of the control (suppression control) for reducing the power consumption of the apparatus main body 40 based on the extracted suppression level and the priority level shown by the priority level data 410. Is determined. In the present embodiment, the content of suppression control is determined in advance for each load device (each device 4, EV system 6, hot water supply system 7) according to a value obtained by subtracting the value indicated by the priority level from the value indicated by the suppression level. ing. FIG. 12 shows an example of the suppression control content of each load device.

  In FIG. 12, “suppression release” means releasing the suppression control, that is, returning the operation state of the device main body 40 to the state before the suppression control. “Dimming: X%” means that the brightness of the illumination is reduced to the current X%. Further, “power consumption: X%” means that power consumption is reduced to the current X%. “Charging power: X%” means that the amount of power for charging the storage battery of the electric vehicle 61 is reduced to the current X%. As can be seen from FIG. 12, the larger the value (D) obtained by subtracting the value indicated by the priority level from the value indicated by the suppression level, the more the control content for reducing the power consumption.

  The control unit 404 generates a control command for controlling the device main body 40 based on the determined suppression control content. For example, when the determined suppression control content is “suppression cancellation”, the control unit 404 generates a control command for setting the operation state before the suppression control. The operation state before the suppression control is stored in the data storage unit 403 by the control unit 404 in the previous suppression control.

  For example, when the device main body 40 is an air conditioner and the determined suppression control content is “power consumption: 50%”, the control unit 404 reduces the power consumption of the device main body 40 to the current 50%. Generate a control command to reduce. The control unit 404 transmits the generated control command to the device main body 40 via the device interface 402. The device body 40 that has received the control command performs an operation according to the received control command. Thereby, the power consumption of the apparatus main body 40 is reduced from the current level (for example, the current level is reduced to 50%).

  FIG. 13 is a flowchart illustrating the procedure of the suppression control process executed by the communication adapter 41 of the device 4. When the communication interface 401 receives the suppression level notification data transmitted from the power measuring device 3 (step S101; YES), the control unit 404 extracts the suppression level from the suppression level notification data received by the communication interface 401 (step S102). ). The control unit 404 determines the suppression control content for the device main body 40 based on the extracted suppression level and the priority level indicated by the priority level data 410 (step S103).

  When the determined suppression control content is not “suppression cancellation” (step S104; NO), the control unit 404 determines whether suppression control is currently being performed on the device main body 40 (step S105). As a result, when the suppression control is not being performed (step S105; NO), the control unit 404 stores data indicating the current operation state of the device main body 40 in the data storage unit 403 as return data (step S106). Then, the control unit 404 generates a control command for controlling the device main body 40 with the determined suppression control content (step S107). On the other hand, when the suppression control is being performed (step S105; YES), the control unit 404 performs the process of step S107 without saving the return data.

  When the suppression control content determined in step S104 is “suppression cancellation” (step S104; YES), the control unit 404 reads the return data from the data storage unit 403 (step S108). Then, the control unit 404 generates a control command for setting the device main body 40 to the operation state indicated by the read return data (step S109).

  After the processing in step S107 or S109, the control unit 404 transmits the generated control command to the device main body 40 via the device interface 402 (step S110).

<Operation of system controller 2>
Next, the operation of the system controller 2 in peak cut control will be described. When a user desires a setting request related to peak cut control, the user operates the terminal device 5 to access the system controller 2 and request a peak cut setting screen. Upon receiving such a request, the control unit 23 (peak cut setting receiving unit 230) of the system controller 2 transmits data for the peak cut setting screen to the terminal device 5 via the terminal communication unit 21.

  The display unit 51 of the terminal device 5 displays an operation screen based on the received data for the peak cut setting screen. The user inputs necessary information according to the input items provided on the displayed operation screen.

  When the input by the user is completed, the control unit 54 of the terminal device 5 transmits data including the input information (input data) to the system controller 2 via the communication unit 52. For example, when the priority level setting input is performed by the user, the control unit 23 (peak cut setting reception unit 230) of the system controller 2 stores the content of the input data from the terminal device 5 in the priority level table 221. As shown in FIG. 11, the priority level table 221 is a data table in which each load device is associated with a priority level.

  In the above case, the control unit 23 (priority level notification unit 231) notifies the priority level to the load device whose priority level has been changed (including when it is newly set). Specifically, the priority level notification unit 231 transmits data storing the new priority level (priority level notification data) to the corresponding load device via the device communication unit 20.

  Further, when the user inputs setting of suppression level determination conditions on the above operation screen, the control unit 23 (peak cut setting reception unit 230) displays the content of the input data from the terminal device 5 as the suppression level. Stored in the discrimination table 222. The suppression level determination table 222 is a data table in which a condition (determination condition) for determining the suppression level is defined. In the present embodiment, in the suppression level determination table 222, as in the suppression level determination table 3121 described above, the ratio of the measurement value to the limit value is defined for each of 0 to 5 stages (see FIG. 8).

  In the above case, the control unit 23 (suppression level determination condition notification unit 232) stores the data (suppression level determination condition notification data) in which the content of the suppression level determination table 222 is stored via the device communication unit 20. Send to.

  FIG. 14 shows a communication sequence between the system controller 2 and the load device when notifying the priority level. FIG. 15 shows a communication sequence between the system controller 2 and the power measuring device 3 when notifying the suppression level determination condition.

  As described above, in the energy management system 1 according to the embodiment of the present invention, the power measurement device 3 obtains the suppression level based on the measured power consumption, and sends the suppression level notification data storing the obtained suppression level. Broadcast transmission to load devices (each device 4, EV system 6, hot water supply system 7). Each load device performs an operation of suppressing power consumption based on the suppression level extracted from the received suppression level notification data and the priority level of the own device. That is, in response to a direct notification from the power measuring device 3, each load device reduces its power consumption.

  Thus, since the energy management system 1 performs peak cut control by the configuration of a so-called self-supporting distributed system, the responsiveness is fast. Therefore, electric power can be used up to a value close to the upper limit of the contract amperage value, and a decrease in user comfort and convenience can be suppressed.

  Moreover, even if the total power consumption in the home increases due to the use of load equipment (for example, a dryer, an electric heater, etc.) that is used in the house H but is not a management target of the energy management system 1, the load to be managed Since the power consumption of the device is immediately suppressed, it is possible to prevent the electric power supply from the commercial power source 9 from being interrupted by the current limiter.

  In addition, each load device to be managed maintains a priority level and performs a power suppression operation according to the priority level. For this reason, in all the load devices, the degree of power suppression is not uniform, and the strength of the power suppression can be adjusted for each load device. Therefore, peak cut control in accordance with the resident's (user's) preference and life pattern can be realized.

  Further, in the energy management system 1 of the present embodiment, the power measurement device 3 acquires the suppression level determination condition through communication with the system controller 2. Each load device acquires a priority level through communication with the system controller 2. Then, the user can access the system controller 2 using the terminal device 5 and appropriately set the suppression level determination condition and the priority level of each load device to a desired condition or value. Therefore, in peak cut control, changes in the preferences of residents (users) and changes in lifestyle patterns can be easily and immediately reflected.

  In addition, this invention is not limited to the said embodiment, Of course, the various change in the range which does not deviate from the summary of this invention is possible.

  For example, when the suppression level notification data is broadcasted to all load devices by the power measuring device 3, the suppression level notification data is also received by the system controller 2, and the suppression level notification data is sent from the system controller 2, Further, it may be broadcast to all load devices. In this way, even when the system controller 2 relays the suppression level notification data from the power measuring device 3 to all load devices, even if the load device has poor wireless communication quality with the power measuring device 3, It is possible to reliably receive the suppression level notification data.

  Further, the priority level table 221 stored in the data storage unit 22 of the system controller 2 may be configured to register a plurality of priority levels of load devices. In the example of the priority level table 221 illustrated in FIG. 16, five priority level patterns A to E are registered in accordance with the mode type of the control state in the power management of the energy management system 1. Here, A indicates a priority level pattern when the control state is the normal mode, B indicates a priority level pattern when the control state is the cooking time zone mode, and C indicates the control state is EV. A priority level pattern when the priority mode is selected, D indicates a priority level pattern when the control status is the night mode, and E indicates a priority when the control status is the autonomous operation mode or the DR request mode. Indicates the level pattern.

  The mode transition of the control state is performed by the control unit 23 of the system controller 2. For example, the control unit 23 changes the control state to the cooking time zone mode or the night mode based on the life pattern of the user. For example, the control unit 23 derives the user's life pattern from the operation history of the load device.

  In addition, the control unit 23, for example, a family outing schedule, an operation schedule of a load device, etc. (for example, a schedule for starting the operation of the device 4 a or the use of the electric vehicle 61, which is registered in advance by the user in the system controller 2. The control state is changed to the normal mode or the EV priority mode based on the schedule or the like.

  Further, when receiving a DR (Demand Response) request from a power system or an upper system such as a CEMS (Cluster / Community Energy Management System), the control unit 23 shifts the control state to the DR request mode.

  In addition, when the power line D1 is disconnected from the commercial power supply 9 due to a power failure, the control unit 23 shifts the control state to the self-sustaining request mode. When the control state is the self-sustaining operation mode, the electric power generated by the power generation system 8 and / or the electric power stored in the storage battery of the electric vehicle 61 is supplied to each load device in the home via the power line D5.

  As described above, the priority level notification method when a plurality of priority level patterns are registered in the priority level table 221 in accordance with the mode type of the control state of the energy management system 1 will be described. In this case, when the control state mode transitions, the control unit 23 (priority level notification unit 231) of the system controller 2 selects a priority level pattern corresponding to the transitioned mode from the priority level table 221. Then, the priority level notification unit 231 transmits priority level notification data storing the priority level corresponding to the load device in the selected priority level pattern to each load device.

  Alternatively, the priority level notification unit 231 acquires priority levels for all the load devices to be managed corresponding to the changed mode from the priority level table 221, and obtains the acquired priority levels and the identification information of the load devices. The associated data may be generated, and the generated data may be stored in the priority level notification data. In this case, the priority level notification unit 231 broadcasts priority level notification data to all the load devices to be managed (devices 4a, 4b,..., EV system 6, hot water supply system 7). If the communication adapter of each load device that has received the broadcast priority level notification data extracts the priority level corresponding to the connected load device main body from the received priority level notification data, and holds the extracted priority level Good.

  As described above, the frequency of communication between the system controller 2 and each load device can be suppressed by broadcasting the priority level notification data.

  Further, by configuring the priority level table 221 so that a plurality of patterns of priority levels can be registered, for example, each load device has a more suitable priority level according to the mode type of the control state in the power management of the energy management system 1. Can be used. Therefore, peak cut control that more strongly reflects the resident's (user's) preferences and lifestyle patterns can be realized.

  Further, the priority level is not only set by the user, but the control unit 23 of the system controller 2 may automatically determine the priority level based on the user's life pattern and the like, and store it in the priority level table 221.

  Further, the suppression level determination table 222 stored in the data storage unit 22 of the system controller 2 may be configured to register a plurality of determination conditions. In the example of the suppression level determination table 222 illustrated in FIG. 17, three determination condition patterns A to C are registered in accordance with the mode type of the control state in the power management of the energy management system 1. Here, A indicates a pattern of determination conditions when the control state is the normal mode, B indicates a pattern of determination conditions when the control state is the peak time zone mode, and C indicates that the control state is independent. The pattern of the discrimination condition in the case of the operation mode or the DR request mode is shown. FIG. 17 shows that when the pattern of the determination condition is C, 0, 2, and 3 are not determined as suppression levels.

  For example, when the current time enters the peak time zone, the control unit 23 of the system controller 2 changes the control state to the peak time zone mode. The peak time zone is a time zone in which the electricity rate is highest during the day. Information about the peak time zone is registered in advance in the system controller 2 by the user.

  As described above, a method of notifying the suppression level determination condition when a plurality of determination condition patterns are registered in the suppression level determination table 222 according to the mode type of the control state will be described. When the control state mode transitions, the control unit (suppression level determination condition notification unit 232) of the system controller 2 selects a determination condition pattern corresponding to the shifted mode from the suppression level determination table 222. Then, the suppression level determination condition notification unit 232 transmits suppression level determination condition notification data storing the selected determination condition pattern to the power measurement device 3.

  In this way, by configuring the suppression level determination table 222 so that a plurality of patterns of determination conditions can be registered, for example, the power measurement device 3 is more capable according to the mode type of the control state in the power management of the energy management system 1. Appropriate discrimination conditions can be used. Therefore, peak cut control that more strongly reflects the resident's (user's) preferences and lifestyle patterns can be realized.

  In addition, the determination condition is not only set by the user, but is also automatically generated by the control unit 23 of the system controller 2 based on the contract amperage value, the user's life pattern, etc., and stored in the suppression level determination table 222. May be.

  In the above embodiment, in the device 4 or the like, data communication is performed with the system controller 2 or the power measurement device 3 by the communication adapter 41 or the like that is externally connected to the device body 40 or the like, and the above-described suppression control process is executed. It was done. However, the device main body 40 such as the device 4 includes a configuration that realizes a function equivalent to that of the communication adapter 41 or the like, so that the device main body 40 or the like is directly connected to the wireless network, and the system controller 2 or power You may enable it to perform the process equivalent to the above-mentioned suppression control process by performing data communication with the measuring device 3.

  Various embodiments and modifications can be made to the present invention without departing from the broad spirit and scope of the present invention. Further, the above-described embodiment is for explaining the present invention, and does not limit the scope of the present invention. That is, the scope of the present invention is shown not by the embodiments but by the claims. Various modifications within the scope of the claims and within the scope of the equivalent invention are considered to be within the scope of the present invention.

  The present invention can be suitably employed in a system for managing power used in the home.

  DESCRIPTION OF SYMBOLS 1 Energy management system, 2 System controller, 3 Electric power measuring device, 4a, 4b Equipment, 5 Terminal device, 6 EV system, 7 Hot water supply system, 8 Electric power generation system, 9 Commercial power supply, 10 Distribution board, 20 Equipment communication part, 21 Terminal communication unit, 22, 53, 312, 403 Data storage unit, 23, 54, 313, 404 Control unit, 24, 55, 314, 405 Bus, 30 Power sensor, 31, 41a, 41b, 62, 70, 80 Communication Adapter, 40a, 40b Device main body, 50 input unit, 51 display unit, 52 communication unit, 60 power conditioner, 61 electric vehicle, 220 device state table, 221 priority level table, 222 suppression level discrimination table, 230 peak cut setting acceptance , 231 priority level notification unit, 232 suppression level discrimination Condition notification unit, 300 Voltage measurement unit, 301 Current measurement unit, 302 A / D conversion unit, 303 Power calculation unit, 304 External interface, 310, 401 Communication interface, 311, 402 Device interface, 410 Priority level data, 3120 Contract restriction Data, 3121 suppression level discrimination table

In order to achieve the above object, an energy management system according to the present invention includes:
An energy management system comprising a system controller, a power measuring device, and a load device,
The power measuring device is
Holds the suppression level determination condition to determine the suppression level of power consumed in a specific demand area,
Measure the power consumed in the demand area,
Based on the measured power and the suppression level determination condition, determine the suppression level, and transmit the determined suppression level to the load device,
The load device is
Acquired by communication with the system controller, maintains a priority level is an index indicating a priority degree of the operation assigned to the own device,
When the suppression level transmitted by the power measuring device is received, the operation of the device itself is controlled based on the received suppression level and the priority level.

Claims (15)

An energy management system comprising a system controller, a power measuring device, and a load device,
The power measuring device is
Holds the suppression level determination condition to determine the suppression level of power consumed in a specific demand area,
Measure the power consumed in the demand area,
Based on the measured power and the suppression level determination condition, determine the suppression level, and transmit the determined suppression level to the load device,
The load device is
Holding the priority level assigned to the own device acquired by communication with the system controller;
The energy management system which controls operation | movement of a self-apparatus based on the received suppression level and the said priority level, if the said suppression level transmitted by the said electric power measurement apparatus is received.   The energy management system according to claim 1, wherein the power measurement device acquires the suppression level determination condition through communication with the system controller.   The energy management system according to claim 1, wherein the system controller includes a setting reception unit that receives a setting of the priority level and / or the suppression level determination condition from a user.   The energy management according to any one of claims 1 to 3, wherein the power measuring device transmits the determined suppression level to the load device when the determined suppression level is different from a suppression level before determination. system. The load device is composed of a device main body responsible for the main operation of the load device, and a communication adapter electrically connected to the device main body,
The power measuring device transmits the determined suppression level to the communication adapter,
The communication adapter is
Acquiring and holding the priority level by communication with the system controller;
Upon receiving the suppression level transmitted by the power measuring device, a command for controlling the operation of the device main body is generated based on the received suppression level and the priority level, and transmitted to the device main body. The energy management system according to any one of claims 1 to 4. Holds the suppression level determination condition to determine the suppression level of power consumed in a specific demand area,
Measure the power consumed in the demand area,
A power measurement device that determines the suppression level based on the measured power and the suppression level determination condition, and transmits the determined suppression level to a load device installed in the demand area.   The power measurement device according to claim 6, wherein the suppression level determination condition is acquired by communication with a system controller.   The power measurement device according to claim 6 or 7, wherein when the determined suppression level is different from a suppression level before determination, the determined suppression level is transmitted to the load device. A load device installed in a specific demand area,
Holds the priority level assigned to the device acquired through communication with the system controller,
When receiving the suppression level of the power consumed in the demand area transmitted by the power measuring device that measures the power consumed in the demand area, the own device based on the received suppression level and the priority level Load equipment that controls the operation of A communication adapter that is electrically connected to a load device installed in a specific demand area,
Holds the priority level assigned to the load device obtained through communication with the system controller,
When receiving the suppression level of the power consumed in the demand area transmitted by the power measuring device that measures the power consumed in the demand area, the load is based on the received suppression level and the priority level. A communication adapter that generates a command for controlling the operation of a device and transmits the command to the load device. A communication unit that performs data communication with a power measuring device and a load device installed in a specific demand area;
A storage unit for storing a priority level assigned to the load device and a suppression level determination condition for determining a suppression level of power consumed in the demand area;
A priority level notification unit for transmitting the priority level to the load device;
A system controller comprising: a suppression level determination condition notifying unit that transmits the suppression level determination condition to the power measurement device.   The system controller according to claim 11, further comprising a setting reception unit that receives a setting of the priority level and / or the suppression level determination condition from a user. Power measuring device
Holds the suppression level determination condition to determine the suppression level of power consumed in a specific demand area,
Measure the power consumed in the demand area,
Based on the measured power and the suppression level determination condition, determine the suppression level, and transmit the determined suppression level to a load device installed in the demand area,
The load device is
Holds the priority level assigned to the device acquired through communication with the system controller,
The energy management method of controlling operation | movement of an own apparatus based on the received suppression level and the said priority level, if the said suppression level transmitted by the said electric power measurement apparatus is received. On the computer,
The suppression level is determined and determined based on power consumed in a specific demand area and a preset suppression level determination condition for determining a suppression level of power consumed in the demand area. The program for implement | achieving the function which transmits the said suppression level to the load apparatus installed in the said demand place. On the computer,
A function to retain the priority level assigned to the load equipment installed in a specific demand area, acquired through communication with the system controller,
When receiving the suppression level of the power consumed in the demand area transmitted by the power measuring device that measures the power consumed in the demand area, the load is based on the received suppression level and the priority level. A program for realizing the function of controlling the operation of the device.

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