JP2014039368A - Controller, control method of controller, control program, and power management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a controller which can prevent sudden change of load and certainly suppress a reverse power flow to a commercial power system to a predetermined amount or lower.SOLUTION: The controller for controlling electrical apparatuses which are different in power consumption according to an operation mode has: a reception section for receiving an instruction to lower or stop the power consumption due to changes in operation to an electrical apparatus; and an adjustment instruction section for giving an instruction to change the operation mode to the electrical apparatus so that the power consumption can be stepwise reduced, when the reception section receives the instruction to lower or stop the power consumption due to changes in operation to the electrical apparatus.

Description

  The present invention relates to a controller for controlling an electric device, a control method for the controller, a control program, and a power management system.

  In recent years, distributed power supply devices such as solar cells, wind power generators, and fuel cells have begun to spread. The DC power generated by the distributed power supply device is converted into AC power by the inverter device and supplied to the electrical equipment. When the power output from the inverter device is lower than the power consumption of the electrical device, the power can be purchased from the power company by supplying insufficient power from the commercial power system.

  As described above, in the grid connection in which the distributed power supply device is linked to the commercial power system via the inverter device and power is supplied to the load, the surplus power is reversely flowed to the commercial power system and sold to the power company. You can also.

  However, it is necessary to suppress the reverse flow of the power from the distributed power supply device to the commercial power system from the viewpoint of ensuring the power quality at the time of grid connection. For example, in detail, when electric power of about 5% of the rated output power of the inverter device continues to flow backward to the power system for 0.5 seconds, the reverse power relay is operated to disconnect the inverter device. Thus, the power system is protected (see, for example, Non-Patent Document 1).

  As a technique for preventing the occurrence of such reverse power flow, for example, in Japanese Patent Application Laid-Open No. 2006-149058 (Patent Document 1), in a series voltage compensation type uninterruptible power supply, the load suddenly changes to zero. In such a case, a configuration is disclosed in which the occurrence of reverse power flow due to a control delay of the DC / AC converter is prevented by reflecting this sudden change in load on the current command value of the DC / AC converter. In the uninterruptible power supply according to Patent Document 1, the first DC / AC converter absorbs the voltage increase of the commercial power supply, and the second DC / AC converter regenerates the absorbed power to the AC bus. Configured to maintain the voltage of the load. In order to prevent a delay in power control when the load suddenly changes in the above configuration, the control circuit of the second DC / AC converter calculates the product of the fluctuation amount of the commercial power supply voltage and the effective current component of the load current. An AC / DC converter, an adder, a current detector, an active current calculator, and a multiplier for generating a current command value including an effective current component to be passed by the second DC / AC converter A current calculator and an adder, and a current detector, an adder, and a current regulator for controlling the alternating current of the second DC / AC converter according to the current command value are configured.

JP 2006-149058 A

“General Rules for Test Methods for Grid Connection Protection Devices for Small Distributed Power Generation Systems”, June 2010, Institute for Electrical Safety and Environment

  However, according to the above-mentioned Patent Document 1, in order to reflect the sudden change of the load current accompanying the sudden change of the load in the current command value of the second DC / AC converter, the control for generating the current command value is performed. The circuit is configured using many circuit elements including an AC / DC converter. For this reason, there is a certain limit in the responsiveness of the alternating current control of the DC / AC converter due to the restriction of the processing speed of the control circuit. As a result, there is a possibility that the reverse power flow due to the control delay of the DC / AC converter cannot be reliably prevented.

  Therefore, the present invention has been made to solve such a problem, and an object of the present invention is to prevent a sudden load change and reliably suppress a reverse power flow to a commercial power system below a specified amount. A controller, a control method for the controller, a control program, and a power management system are provided.

  A controller according to an aspect of the present invention is a controller that controls an electric device having different power consumption according to an operation mode, a reception unit that receives an instruction to reduce or stop power consumption due to a change in the operation mode of the electric device, and a reception unit An adjustment instruction unit that instructs the electric device to change the operation mode so that the power consumption decreases stepwise when an instruction to reduce or stop the power consumption due to the change of the operation mode for the electric device is received. Is provided.

Preferably, the adjustment instruction unit is configured to be able to adjust the power consumption to be reduced for each step.
In particular, the electrical device is connected to a power conversion device for converting power from an external power storage unit, and adjusts the power consumption to be reduced for each stage according to the rated output power of the power conversion device.

  In particular, the electrical device is also connected to an external power system, and the controller is based on the determination result of the supply determination unit that determines whether power is supplied from the power storage unit to the electrical device, and the determination result of the supply determination unit. When the accepting unit accepts an instruction to reduce or stop power consumption due to a change in the operation mode for the electric device, the adjustment instruction unit sets the operation mode for the electric device so that the power consumption decreases stepwise. Direct change.

  Preferably, the information processing apparatus further includes a storage unit having a table in which a relationship of power consumption corresponding to the operation mode is registered, and the adjustment instruction unit instructs to change the operation mode based on the table stored in the storage unit.

  In particular, the table is a relationship of power consumption according to an operation mode when the electric device is operated, or a relationship of power consumption according to an operation mode when the power consumption is reduced by changing the operation mode of the electric device.

  A control method of a controller for controlling an electric device having different power consumption according to an operation mode according to an aspect of the present invention, the step of receiving an instruction to reduce or stop power consumption due to a change in the operation mode for the electric device, A step of instructing the electric device to change the operation mode so that the power consumption is reduced stepwise when an instruction to reduce or stop the power consumption due to the change of the operation mode is received.

  A control program that is executed by a computer of a controller that controls electric devices having different power consumption according to an operation mode according to an aspect of the present invention, wherein the control program causes the computer to reduce power consumption by changing the operation mode of the electric device or The step of accepting the stop instruction and the change of the operation mode for the electric device so that the power consumption decreases step by step when the instruction for reducing or stopping the power consumption due to the change of the operation mode for the electric device is accepted. And a step of instructing to execute the process.

  An electric power management system according to an aspect of the present invention, comprising: an electric device having different power consumption according to an operation mode; and a controller for controlling the electric device, wherein the controller is configured to reduce power consumption by changing the operation mode for the electric device. An accepting unit that accepts an instruction to reduce or stop, and an electrical device so that when the accepting unit accepts an instruction to reduce or stop power consumption due to a change in operation mode for the electrical device, the power consumption gradually decreases. And an adjustment instructing unit for instructing the change of the operation mode.

  Preferably, the apparatus further includes an operation unit for changing the operation mode of the electric device, and the adjustment instruction unit of the controller receives an instruction to reduce or stop power consumption due to the change of the operation mode for the electric device in the reception unit. Instructs the electric device to change the operation mode so that the power consumption gradually decreases through the operation means.

  Preferably, the electronic device further includes a measuring device that is provided for each electric device and measures the power consumption of the corresponding electric device, and the measuring device transmits the measured power consumption of the electric device to the controller.

  It is possible to prevent sudden changes in load and to reliably suppress reverse power flow to the commercial power system below a specified amount.

It is a schematic diagram which shows the whole structure of the power management system 1 according to embodiment of this invention. It is a schematic diagram which shows the hardware constitutions of the home controller 100 according to embodiment of this invention. It is a flowchart explaining the stop instruction | indication of the electric equipment of the home controller 100 according to embodiment of this invention. It is a figure explaining the operation table of the air conditioner 200A according to the embodiment of the present invention. It is a figure which shows the specific example controlled using the operation | movement table of the air conditioner 200A according to embodiment of this invention. It is a flowchart explaining the stop instruction | indication of the electric equipment of the home controller 100 according to the modification 1 of embodiment of this invention. It is a figure explaining the stop table of the air-conditioner 200A according to the modification 1 of embodiment of this invention. It is a figure which shows the specific example controlled using the stop table of the air-conditioner 200A according to the modification 1 of embodiment of this invention. It is a flowchart explaining the stop instruction | indication of the electric equipment of the home controller 100 according to the modification 2 of embodiment of this invention. It is a figure explaining the structure of another power management system 1A according to embodiment of this invention. It is a figure explaining the structure of another power management system 1B according to embodiment of this invention. It is a figure explaining the structure of another power management system 1C according to embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

<Configuration of power management system>
Hereinafter, a power management system including one or a plurality of electric devices used in a house will be described as an example. However, the present invention is not applied only to such a power management system.

  FIG. 1 is a schematic diagram showing an overall configuration of a power management system 1 according to the embodiment of the present invention.

  Referring to FIG. 1, power management system 1 according to the present embodiment is installed in a house such as a house or an office. More specifically, the power management system 1 includes a plurality of home appliances as electric devices that consume power.

  Although not limited to these in FIG. 1, as home appliances, an air conditioner (air conditioner) 200 </ b> A, a television 200 </ b> B, and a lighting fixture 200 </ b> C installed in a house are collectively referred to as “home appliances”. Etc.) are illustrated. Power management system 1 also includes a storage battery 200Y that charges and discharges power. Storage battery 200Y may be installed in a house or the like, or may be a storage battery for automobiles that is also used as a storage battery for housing.

  Furthermore, the power management system 1 is connected to a power system (such as commercial power provided by a power company) 30 via a bidirectional DC / AC converter 200Z that is an inverter device with respect to the storage battery 200Y. The power system 30 supplies power to each electrical device via the power line 402. The bidirectional DC / AC converter 200Z is connected to the power line 402 and can supply power from the storage battery 200Y.

  When the bidirectional DC / AC converter 200Z charges the storage battery 200Y using the power from the power system 30, the bidirectional DC / AC converter 200Z converts the alternating current power into direct current power and charges the storage battery 200Y. Further, when discharging, the DC power discharged from the storage battery 200 </ b> Y is converted into AC power and supplied to the power line 402. As an example, the rated output of the bidirectional DC / AC converter 200Z is assumed to be 5 kW. In this example, the configuration in which the storage battery 200Y and the bidirectional DC / AC converter 200Z are connected will be described. However, the configuration is not limited to this configuration. For example, a DC / DC converter is connected between the storage battery 200Y and the bidirectional DC / AC converter 200Z. The DC / DC converter may adjust the value of DC power and supply power between the storage battery 200Y and the bidirectional DC / AC converter 200Z.

  The electric power system 30 supplies AC power (for example, AC 200V) received from an electric power company or the like. The power system 30 is, for example, a single-phase three-wire commercial AC power system.

  Furthermore, the power management system 1 is provided for each electric device and the home controller 100 for monitoring and controlling the measuring instruments 400A to 400C and the storage battery 200Y associated with the electric device 200 via the relay 150. IR remote controls 300A to 300C (also collectively referred to as IR remote control 300). The home controller 100 can perform data communication with the measuring devices 400A to 400C and the storage battery 200Y associated with the electric device 200 via the wired or wireless network 401 in cooperation with the relay device 150.

  An arbitrary network can be used as the network 401. For example, Ethernet (registered trademark), PLC (Power Line Communications), or the like can be used as long as it is a wired network. In addition, for a wireless network, for example, a wireless local area network (LAN), ZigBee (registered trademark), Bluetooth (registered trademark), an infrared communication method, or the like conforming to the IEEE 802.11 standard can be used. Further, a plurality of communication methods may be combined. In addition, in this example, although the structure which provided the repeater 150 is shown, it is also possible to set it as the structure which the home controller 100 directly controls without providing the repeater 150.

  The measuring device 400 is associated with one of the electrical devices 200, measures information regarding power consumption in the associated electrical device 200, and transmits the measurement information to the home controller 100 via the repeater 150. Typically, as the measuring instrument 400, a power consumption measuring device that is disposed between the power line 402 and the plug of the electric device 200 and measures the state of power consumption is used.

  In the example shown in FIG. 1, three measuring devices 400 </ b> A to 400 </ b> C are electrically connected to the power line 402. Plug 250A of air conditioner 200A is connected to measuring instrument 400A, plug 250B of television 200B is connected to measuring instrument 400B, and plug 250C of lighting fixture 200C is connected to measuring instrument 400C. ing. Therefore, measuring instruments 400A-400C measure information about power consumption in air conditioner 200A, television 200B, and lighting fixture 200C, respectively.

  The home controller 100 stores, in the hard disk 109, information related to power consumption respectively transmitted from the measuring device 400 or the like associated with each electric device 200 acquired via the repeater 150.

  The IR remote controllers 300A to 300C are provided corresponding to the electric devices 200A to 200C, respectively, and control the electric devices 200A to 200C by transmitting infrared remote control signals according to instructions from the home controller 100, respectively. .

  The home controller 100 presents the state of power consumption in the power management system 1 to the user or receives instructions from the user regarding power management in the power management system 1, specifically, control of electrical equipment, Provides a user interface. Home controller 100 may be a portable type, may be detachable from a base arranged on a table, or may be fixed to a wall of a room.

  The home controller 100 stores control programs necessary for controlling the electric devices 200A to 200C via the IR remote controllers 300A to 300C, respectively, and a user interface screen for controlling each electric device by the control program Is displayed, and each electric device can be operated from the home controller 100. Then, a predetermined instruction corresponding to the operation is output from the home controller 100 to the IR remote controller 300, and a predetermined infrared signal instructing to execute a desired operation is transmitted from the IR remote controller to the electric device 200.

  In this example, the configuration in which the home controller 100 acquires data by performing data communication with each measuring device has been mainly described. However, a server that collects data (not shown) is provided, and the server is connected to each measuring device. It is also possible to adopt a configuration in which data is accumulated through data communication, and the home controller 100 acquires the data accumulated in the server.

  In the power management system shown in FIG. 1, as an example, a case will be described in which discharge power exceeding a specified amount from the storage battery 200Y is prevented from flowing backward to the power system 30 from the viewpoint of ensuring power quality.

  Next, a hardware configuration of the home controller 100 configuring the power management system 1 illustrated in FIG. 1 will be described.

<Home controller 100>
FIG. 2 is a schematic diagram showing a hardware configuration of home controller 100 according to the embodiment of the present invention.

  2, home controller 100 includes a CPU (Central Processing Unit) 101 that is a processor, a touch panel 102 including a display 103 and a tablet 104, operation buttons 105, a communication interface 106, an output interface 107, An input interface 108, a hard disk 109, a memory 110, and a speaker 111 are included.

  The CPU 101 is a processing entity that controls the overall processing in the home controller 100, and provides various functions as described below by executing a program stored in advance in the memory 110 or the like. In response to a user operation input from the tablet 104 or the operation button 105, the CPU 101 executes a process instructed by the user operation. Such an instruction includes an instruction regarding operation / stop for the electric device 200, an instruction to display a current or past power management state, and the like.

  The touch panel 102 is a device that provides a user interface, presents various types of information to the user in accordance with instructions from the CPU 101, and outputs instructions input from the user to the CPU 101. More specifically, the display 103 includes, for example, an LCD (Liquid Crystal Display) or an organic EL (Electro Luminescence) display, and displays an image on its display surface. The tablet 104 detects a touch operation with a user's finger or the like, and outputs a coordinate value indicating a position where the touch operation is performed to the CPU 101. In the present embodiment, a tablet 104 is provided in association with the display surface of the display 103.

  The operation buttons 105 are input means for accepting user operations, and typically one or more are arranged on the surface of the home controller 100. Typically, the operation button 105 includes a plurality of buttons and keys such as a determination button, a return button, a direction button, and a numeric keypad. When the operation button 105 receives a user operation, the operation button 105 outputs information indicating the user operation to the CPU 101.

  The communication interface 106 performs data communication with the measuring instrument 400, the storage battery 200Y, the IR remote controller 300, and the like according to instructions from the CPU 101. More specifically, the communication interface 106 includes the Ethernet (registered trademark), the PLC (Power Line Communications), the wireless LAN (Local Area Network) conforming to the IEEE 802.11 standard, the ZigBee (registered trademark), as described above. Bluetooth (registered trademark), an infrared communication system, or the like is used.

  The output interface 107 mediates exchange of internal commands between the CPU 101 and the display 103. The input interface 108 mediates exchange of internal commands between the tablet 104 and / or the operation buttons 105 and the CPU 101.

  The hard disk 109 stores various data necessary for information processing in the home controller 100.

  The memory 110 is realized by a RAM (Random Access Memory) that is a volatile storage device, a ROM (Read-Only Memory) that is a nonvolatile storage device, and the like. Store the necessary work data. In this example, it is assumed that a control program for controlling the IR remote controller 300, a table to be described later, and the like are also stored in the memory 110 or the hard disk 109. The contents instructed to the IR remote controller 300 may be stored in the memory 110 or the hard disk 109. By storing the contents instructed to the IR remote controller 300, it is possible to calculate the power consumption of the target electric device from an operation table described later.

  The speaker 111 is an audio device, and outputs audio according to a command from the CPU 101. The clock 112 is a time measuring means and responds to the CPU 101 with the current date and time according to a command from the CPU 101.

  The hard disk 109 and / or the memory 110 may be realized using a storage medium connected via a communication interface. As such storage media, semiconductor memories such as flash memory, mask ROM, EPROM (Electronically Programmable Read-Only Memory), EEPROM (Electronically Erasable Programmable Read-Only Memory), IC (Integrated Circuit) card, CD-ROM (Compact Disc-Read Only Memory) and optical disc storage media such as DVD-ROM (Digital Versatile Disk-Read Only Memory), magneto-optical disc storage media such as MO (Magnetic Optical Disc) and MD (Mini Disc), FD ( Magnetic storage media such as Flexible Disk), magnetic tape, and cassette tape can be used.

  Information processing in the home controller 100 is realized by the CPU 101 executing a program in cooperation with peripheral hardware components. Generally, such a program is installed in advance in the memory 110 or the like.

  Such a program can be provided by being stored and distributed in an arbitrary storage medium. Alternatively, such a program can be provided by downloading from a server device (or other device) connected to the Internet or the like. That is, the program stored in the storage medium is read out, or the program is acquired by downloading from the server device and temporarily stored in the memory 110 or the like. The CPU 101 expands the program stored in the memory 110 into an executable format and then executes the program. Storage media for storing such programs include semiconductor memory media such as flash memory, mask ROM, EPROM, EEPROM, and IC card, optical disk storage media such as CD-ROM and DVD-ROM, and optical media such as MO and MD. Magnetic storage media such as magnetic disk storage media, FD, magnetic tape, cassette tape, etc. can be used.

  Furthermore, instead of installing the program in advance in the memory 110 or the like, the CPU 101 may read and execute a program stored in another system or apparatus.

  Furthermore, after a program read from a storage medium or the like is written to a memory or the like mounted on a function expansion board or function expansion unit mounted on the computer, it is stored in the function expansion board or function expansion unit according to the program. The function according to the present embodiment may be realized by performing all or a part of the necessary processing by a mounted arithmetic unit (CPU or the like).

  Furthermore, not only the functions according to the present embodiment are realized by the CPU 101 executing the program, but also all or part of the processing required by the OS (operating system) executed on the computer according to the program. By performing the above, the function according to the present embodiment may be realized.

  When the function according to the present embodiment is realized by the software as described above, the program itself read from the storage medium or the like, or the storage medium storing the program constitutes one embodiment of the present invention. Become.

  In this specification, the program includes not only a program that can be directly executed by the CPU 101 but also a program in a source program format, a compressed program, and an encrypted program.

<Control flow>
In this example, a case where the target electrical device is stopped from the home controller 100 will be described.

  FIG. 3 is a flowchart illustrating an instruction to stop electric device of home controller 100 according to the embodiment of the present invention. This flow is mainly realized by the CPU 101 executing a control program or the like stored in the memory 110. The same applies to the following flows.

  Referring to FIG. 3, first, it is determined whether or not there is a stop (OFF) command for the electric device (step S2). Specifically, it is determined whether there is an instruction from the home controller 100 to stop the target electric device.

  Next, when it is determined in step S2 that there is a stop (OFF) command (YES in step S2), an operation table corresponding to the electrical device instructed to stop is acquired (step S4). It is assumed that the operation table is stored in advance in the hard disk 109 or the memory 110.

  And the power consumption of an electric equipment is calculated (step S6). Specifically, it is possible to calculate power consumption from information measured by a measuring instrument 400 provided corresponding to the electrical device. Alternatively, it is possible to calculate the power consumption based on an operation table acquired according to the operation contents operated last time using the IR remote controller.

  Then, it is determined whether or not the calculated power consumption exceeds 5% of the rated output of the bidirectional DC / AC converter 200Z (step S8). In this example, it is assumed that the rated output of the bidirectional DC / AC converter 200Z is 5 kW as an example. That is, it is determined whether it exceeds 250W.

  In step S8, when it is determined that the power consumption exceeds 5% of the rated output of bidirectional DC / AC converter 200Z (YES in step S8), the change to the next operation mode is calculated and determined. (Step S9). Specifically, the change to the next changeable operation mode is calculated and determined based on the power consumption of the current operation mode with reference to the operation table. The operation table stores the power consumption value of each operation mode, and when the power consumption exceeds 5% of the rated output, the amount of change in power consumption due to the change is set to 5% or less of the rated output. It is necessary to determine the operation mode for this. By setting the amount of change in power consumption due to the change to 5% or less of the rated output, power exceeding 5% of the rated output due to the control delay of the bidirectional DC / AC converter 200Z flows backward to the commercial power system. This can be reliably prevented.

  And a power consumption reduction instruction | indication is output so that it may become the determined operation | movement aspect (step S10). The power consumption reduction instruction will be described later.

  On the other hand, if it is determined in step S8 that the power consumption does not exceed 5% of the rated output of the bidirectional DC / AC converter 200Z (NO in step S8), a full stop is instructed (step S12).

Then, the process ends (END).
FIG. 4 is a diagram illustrating an operation table of air conditioner 200A according to the embodiment of the present invention.

Referring to FIG. 4, here, an operation table of air conditioner 200A is shown.
Specifically, a case where the operation mode of the air conditioner 200 </ b> A is divided into the time of blowing and the time of cooling is shown.

  In the case of air blowing, the case where the power consumption varies according to the change in the operation mode in which the air volume is changed from OFF to rapid wind is shown. Specifically, when it is stopped (OFF), the power consumption is zero. Further, a case is shown in which the air volume increases in the order of OFF <static wind <light wind <weak wind <medium wind <strong wind <rapid wind.

  In cooling, when there is no difference between the outside air temperature as the set temperature, that is, when the temperature is maintained at 0 ° C., the power consumption is 300 W. The power consumption required when the set temperature is decreased by 1 ° C. compared to the outside air temperature is shown. In this example, the change in power consumption by 1 ° C. when changing from 0 ° C. (temperature maintenance) to −12 ° C. is shown.

  In this example, the case where the operation table is provided in advance will be described. However, the power consumption measured by the measuring instrument 400 and the operation contents operated using the IR remote controller are accumulated and created as a database. You may make it do. The same applies to the stop table. Specifically, it is possible to create a database by accumulating the stopped procedures using the operation table and creating a database.

  FIG. 5 is a diagram showing a specific example of control using an operation table of air conditioner 200A according to the embodiment of the present invention.

  With reference to FIG. 5, in this example, the case where the power consumption of air conditioner 200A is calculated as 700 W according to the flowchart of FIG. 3 will be described.

  Note that the power consumption may be obtained by the measuring instrument 400 or may be calculated based on the operation instruction and the operation table set last time via the IR remote controller.

  Since the rated output of the bidirectional DC / AC converter 200Z is 5 kW, it is determined whether or not it exceeds 250 W.

  In this example, since the calculated power consumption of the air conditioner 200A is 700 W and exceeds 250 W, the change to the next operation mode is calculated and determined. Specifically, referring to the operation table, a changeable operation mode is calculated and determined. In this example, since the power consumption can be changed up to 500 W as a change to the operation mode, the operation mode is instructed. Specifically, since the change in power consumption is 250 W or less, a power consumption reduction instruction is output so that the power consumption is 500 W. In this example, the home controller 100 instructs the set temperature to be −2 ° C. via the IR remote controller 300A so that the power consumption is set to 500 W based on the operation table.

  And again, power consumption is calculated and it is judged whether power consumption exceeds 250W. Since the calculated power consumption of the air conditioner 200A is 500 W and exceeds 250 W, the change to the next operation mode is calculated and determined. Specifically, referring to the operation table, a changeable operation mode is calculated and determined. In this example, since the power consumption can be changed up to 300 W as a change to the operation mode, the operation mode is instructed. Specifically, since the change in power consumption is 250 W or less, a power consumption reduction instruction is output so that the power consumption is 300 W. In this example, the home controller 100 instructs the set temperature to be the same as the outside temperature, that is, the difference is 0 ° C. via the IR remote controller 300A so that the power consumption is set to 300 W based on the operation table. To do.

  And it is judged again whether power consumption exceeds 250W. Since the calculated power consumption of the air conditioner 200A is 300 W and exceeds 250 W, the change to the next operation mode is calculated and determined. Specifically, referring to the operation table, a changeable operation mode is calculated and determined. In this example, since the power consumption can be changed up to 70 W as a change to the operation mode, the operation mode is instructed. Specifically, since the change in power consumption is 250 W or less, a power consumption reduction instruction is output so that the power consumption is 70 W. In this example, the home controller 100 instructs the air volume to be medium via the IR remote controller 300A so that the power consumption is set to 70 W based on the operation table.

And it is judged again whether power consumption exceeds 250W.
Since the calculated power consumption of the air conditioner 200A is 70 W and 250 W or less, the stop is instructed. That is, the home controller 100 stops the air conditioner 200A via the IR remote controller 300A so that the power consumption is set to 0W.

  As described above, the home controller 100 instructs the air conditioner 200A to use the operation table via the IR remote controller 300A so that the power consumption is gradually reduced. In order to reduce the power consumption step by step by this processing, a sudden load change is prevented, and the change in power consumption is 5% or less of the rated output of the bidirectional DC / AC converter 200Z, so that the bidirectional DC / AC conversion is performed. It is possible to reliably prevent the power exceeding 5% caused by the control delay of the device 200Z from flowing backward to the commercial power system.

  In this example, the air conditioner 200A has been mainly described as an example. However, the present invention is not limited to the air conditioner 200A, but is similarly applied to other electric devices (such as a dryer and an IH cooking heater) such as the television 200B and the lighting device 200C. Applicable.

(Modification 1)
FIG. 6 is a flowchart illustrating an instruction to stop the electric device of home controller 100 according to the first modification of the embodiment of the present invention.

With reference to FIG. 6, the example which uses a stop table is demonstrated in this example.
First, it is determined whether or not there is a stop (OFF) command for the electric device (step S20). Specifically, it is determined whether there is an instruction from the home controller 100 to stop the target electric device.

  Next, when it is determined in step S20 that there is a stop (OFF) command (YES in step S20), the power consumption of the electrical device is calculated (step S22). Specifically, it is possible to calculate power consumption from information measured by a measuring instrument 400 provided corresponding to the electrical device.

  Next, it is determined whether or not the calculated power consumption exceeds 5% of the rated output of the bidirectional DC / AC converter 200Z (step S24). In this example, it is assumed that the rated output of the bidirectional DC / AC converter 200Z is 5 kW as an example. That is, it is determined whether the power consumption exceeds 250W.

  If it is determined in step S24 that the power consumption exceeds 5% of the rated output of bidirectional DC / AC converter 200Z (YES in step S24), a stop table is acquired (step S28). It is assumed that the stop table is stored in advance in the hard disk 109 or the memory 110.

  Then, a power consumption reduction instruction is output according to the stop table (step S30). The power consumption reduction instruction will be described later.

Then, the process ends (END).
On the other hand, if it is determined in step S24 that the power consumption does not exceed the rated output of the bidirectional DC / AC converter 200Z (NO in step S24), a complete stop is instructed (step S26).

Then, the process ends (END).
Therefore, when it is determined that the power consumption exceeds 5% of the rated output of the bidirectional DC / AC converter 200Z as compared with the flow diagram described in FIG. The process of calculating and determining the change is not performed. The operation mode is changed according to the stop table.

  FIG. 7 is a diagram illustrating a stop table of air conditioner 200A according to the first modification of the embodiment of the present invention.

Referring to FIG. 7, here, a stop table of air conditioner 200A is shown.
Specifically, the case where the operation mode of the air conditioner is divided into the time of blowing and the time of cooling is shown. The stop table is a table defined in advance so that the power consumption does not change more than 5% of the rated output as a change in the operation mode when the electric device is stopped. Therefore, when using the stop table, as described when using the operation table, the power consumption of the operation mode when the change is made so that the amount of change in power consumption accompanying the change is 5% or less of the rated output. There is no need to calculate, and the operation mode may be changed according to the stop table. That is, the operation mode may be changed one by one from the operation mode of a certain stop table.

  Specifically, as air blowing, power consumption is 0 W when the air volume is OFF, and 70 W is shown when the air volume is medium.

  In cooling, when there is no difference between the outside air temperature as the set temperature, that is, when the temperature is maintained at 0 ° C., the power consumption is 300 W. Moreover, the relationship with the difference with external temperature is shown as preset temperature in case power consumption changes 200W at a time.

Electric equipment stop control is executed using the stop table.
FIG. 8 is a diagram showing a specific example of control using the stop table of the air conditioner 200A according to the first modification of the embodiment of the present invention.

  With reference to FIG. 8, in this example, the case where the power consumption of air conditioner 200A is calculated as 700 W according to the flowchart of FIG. 5 will be described.

In addition, the said power consumption shall be what was acquired with the measuring device 400. FIG.
Since the rated output of the bidirectional DC / AC converter 200Z is 5 kW, it is determined whether or not it exceeds 250 W.

In this example, since it exceeds 250 W, a stop table is acquired.
Then, a power consumption reduction instruction according to the stop table is output.

  Specifically, the home controller 100 may change the operation mode one by one from the operation mode corresponding to 700 W in the stop table. Specifically, first, an instruction to change the operation mode is given so that the power consumption (up one) 500 W is less than 700 W from the operation mode corresponding to 700 W. That is, the set temperature is instructed via the IR remote controller 300A so that the difference from the outside air temperature is −2 ° C.

  Next, the home controller 100 instructs the change of the operation mode so that the power consumption (up one) 300 W is less than 500 W of the stop table. That is, the set temperature is instructed via the IR remote controller 300A so that the set temperature is the same as the outside temperature and the difference is 0 ° C.

  Next, the home controller 100 instructs the change of the operation mode so that the power consumption (up by one) 70 W is smaller than that of the stop table 300 W. That is, the air volume is instructed to be medium through the IR remote controller 300A.

  Next, the home controller 100 stops the air conditioner 200A via the IR remote controller 300A. The instruction to change the operation mode is executed every predetermined period.

  As described above, the home controller 100 instructs the air conditioner 200A to operate in a stepwise manner to reduce power consumption using the stop table via the IR remote controller 300A.

  In order to reduce the power consumption step by step by this processing, a sudden load change is prevented, and the change in power consumption is 5% or less of the rated output of the bidirectional DC / AC converter 200Z, so that the bidirectional DC / AC conversion is performed. It is possible to reliably prevent the power exceeding 5% caused by the control delay of the device 200Z from flowing backward to the commercial power system.

  This stop table is provided as a power consumption reduction instruction so that the change in power consumption is 250 W or less. Therefore, the control set in the table may be executed in order without calculating the power consumption of the operation mode changed by the CPU 101 inside the home controller 100. Therefore, high-speed processing is possible.

(Modification 2)
FIG. 9 is a flowchart illustrating an instruction to stop the electric device of home controller 100 according to the second modification of the embodiment of the present invention.

  Referring to FIG. 9, in this example, as compared with the flow of FIG. 3, it is further confirmed whether or not an instruction to stop the electrical device is discharging from the storage battery 200 </ b> Y, A description will be given of a case in which an operation mode for reducing power consumption is instructed. Other portions are the same as those described in the flow of FIG.

  Specifically, when it is determined in step S2 that there is a stop (OFF) command for the electrical device (YES in step S2), it is determined whether or not the storage battery 200Y is being discharged (step S3). Specifically, the home controller 100 confirms the operation state of the storage battery 200Y and determines whether or not it is discharging. There are various methods for confirming the operation state of the storage battery 200Y. For example, it is possible to confirm whether or not the battery is being discharged by a current sensor (not shown) connected to the storage battery 200Y, or It is also possible to confirm from the operating state of the bidirectional DC / AC converter 200Z.

  In step S3, when it is determined that a stop (OFF) command for the electric device is discharging from storage battery 200Y (YES in step S3), an operation table corresponding to the electric device instructed to stop is acquired (step S3). S4). Since the subsequent processing is the same as that described with reference to FIG. 3, detailed description thereof will not be repeated.

  On the other hand, if it is determined in step S3 that the stop (OFF) command for the electric device is not discharging from the storage battery 200Y (NO in step S3), a full stop is instructed (step S12). In other words, the supply of power is stopped instead of stopping in stages.

  By confirming the operating state of the storage battery 200Y and confirming that it is discharging, instructing the operation mode to reduce the power consumption step by step, preventing sudden load change and ensuring the specified amount It is possible to prevent the amount of electric power exceeding 1 from flowing back into the commercial power system.

The same applies to the flow of FIG.
In the above description, the air conditioner 200A is mainly described as an example. However, the present invention is not limited to the air conditioner 200A, but can be similarly applied to other electric devices such as the television 200B and the lighting device 200C.

<Configuration of another power management system (part 1)>
FIG. 10 is a diagram illustrating a configuration of another power management system 1A according to the embodiment of the present invention.

  Referring to FIG. 10, power management system 1 </ b> A is different from power management system 1 described in FIG. 1 in that measuring instrument 400 is not provided. Since other configurations are the same, detailed description thereof will not be repeated.

  Even in this configuration, it is possible to stop the target electric device from the home controller 100 in the same manner as described above.

  Specifically, using the operation table as described in FIGS. 3 to 5, the power consumption is gradually increased so that the change of the power consumption does not exceed 5% of the rated output of the bidirectional DC / AC converter 200Z. You can tell us to reduce The power consumption is calculated by storing the operation content operated last time using the IR remote controller in the memory 110 or the like and calculating the power consumption based on the operation table acquired according to the stored operation content. To do.

  Also in this configuration, it is possible to apply the methods according to the first and second modifications in the same manner.

<Configuration of another power management system (part 2)>
FIG. 11 is a diagram illustrating a configuration of another power management system 1B according to the embodiment of the present invention.

  Referring to FIG. 11, the power management system 1 </ b> B is different from the power management system 1 described in FIG. Specifically, the electric device in this example directly uses the home controller 100 without using a power consumption measurement function, a function of transmitting the measured power consumption to the home controller 100 via the repeater 150, and a remote controller. It is assumed that control based on an instruction from can be performed.

  Even in this configuration, it is possible to stop the target electric device from the home controller 100 in the same manner as described above.

  Specifically, using the operation table or the stop table as described with reference to FIGS. 3 to 9, stepwise so that the change in power consumption does not exceed 5% of the rated output of the bidirectional DC / AC converter 200Z. May be instructed to reduce power consumption.

  Also in this configuration, it is possible to apply the methods according to the first and second modifications in the same manner.

<Configuration of another power management system (part 3)>
FIG. 12 is a diagram illustrating a configuration of another power management system 1C according to the embodiment of the present invention.

  Referring to FIG. 12, the power management system 1AC is different from the power management system 1 described in FIG. 1 in that a distributed power source 210 and a DC / DC converter 220 are further provided. Since other configurations are the same, detailed description thereof will not be repeated.

  Examples of the distributed power source 210 include a solar cell and a fuel cell. The distributed power source 210 and the DC / DC converter 220 are connected, and the DC / DC converter 220 and the bidirectional DC / AC converter 200Z are connected. Note that a configuration in which the DC / DC converter 220 is not provided is also possible.

  In the power management system 1C, it is possible to supply power from the distributed power supply 210 via the bidirectional DC / AC converter 200Z from other than the storage battery 200Y.

  Even in this configuration, it is possible to stop the target electric device from the home controller 100 in the same manner as described above.

  Specifically, using the operation table as described in FIGS. 3 to 5, the power consumption is gradually increased so that the change of the power consumption does not exceed 5% of the rated output of the bidirectional DC / AC converter 200Z. You can tell us to reduce

  Also in this configuration, it is possible to apply the methods according to the first and second modifications in the same manner.

  In addition, about said structure, although mainly demonstrated about the structure in which the storage battery 200Y is provided, it is not restricted to the said structure in particular, For example, it is also possible to set it as the structure in which only a solar cell etc. are provided as the distributed power supply 210.

<Other forms>
In the above description, the case where the operation of the instructed electric device is stopped has been mainly described. However, the present invention is not limited to the case where the operation is specifically stopped. is there. Specifically, an instruction is given to reduce the power consumption step by step according to the same method as described above until the instructed electric device becomes a target operation mode.

  In the above description, the case where the target electrical device is stopped from the home controller 100 for one electrical device has been described. However, an instruction to collectively stop a plurality of electrical devices may be given. In this case, the above-described flow may be executed one by one for each electric device.

  In the above description, a case has been described in which the power exceeding 5% of the rated output of the bidirectional DC / AC converter 200Z is not reversely flowed as the specified amount, but 5% is an example and can be changed as appropriate. .

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  1, 1A, 1B, 1C Power management system, 100 home controller, 101 CPU, 102 touch panel, 103 display, 104 tablet, 105 operation buttons, 106 communication interface, 107 output interface, 108 input interface, 109 hard disk, 110 memory, 111 Speaker, 112 clock, 150 repeater, 200 electrical equipment, 210 distributed power supply, 220 DC / DC converter.

Claims (11)

A controller for controlling electric devices having different power consumption according to an operation mode,
An accepting unit for accepting an instruction to reduce or stop power consumption due to a change in operation mode for the electrical device;
When the reception unit receives an instruction to reduce or stop power consumption due to a change in operation mode for the electrical device, the operation mode is changed for the electrical device so that the power consumption decreases stepwise. A controller comprising an adjustment instruction unit for instructing.   The controller according to claim 1, wherein the adjustment instruction unit is configured to be able to adjust power consumption to be reduced for each step. The electrical device is connected to a power conversion device for converting power from an external power storage unit,
The controller according to claim 2, wherein power consumption to be reduced for each step is adjusted according to a rated output power of the power conversion device. The electrical device is also connected to an external power system,
The controller is
A supply determination unit that determines whether power is being supplied from the power storage unit to the electrical device;
Based on the determination result of the supply determination unit, the adjustment instructing unit may gradually reduce the power consumption when the receiving unit receives an instruction to reduce or stop power consumption due to a change in the operation mode for the electrical device. The controller according to claim 3, wherein the controller instructs the electric device to change the operation mode so as to be reduced. A storage unit having a table in which a relationship of power consumption according to the operation mode is registered;
The controller according to claim 1, wherein the adjustment instruction unit instructs to change the operation mode based on a table stored in the storage unit.   The table is a relationship of power consumption according to an operation mode when the electric device operates or a relationship of power consumption according to an operation mode when the power consumption is reduced by changing the operation mode of the electric device. The controller according to claim 5. A control method of a controller for controlling electric devices having different power consumption according to an operation mode,
Receiving an instruction to reduce or stop power consumption due to a change in operation mode for the electrical device;
A step of instructing the electric device to change the operation mode so that the power consumption decreases stepwise when an instruction to reduce or stop power consumption due to a change in the operation mode of the electric device is received; A controller control method comprising: A control program to be executed by a computer of a controller that controls electric devices having different power consumption according to an operation mode,
The control program is stored in the computer.
Receiving an instruction to reduce or stop power consumption due to a change in operation mode for the electrical device;
A step of instructing the electric device to change the operation mode so that the power consumption decreases stepwise when an instruction to reduce or stop power consumption due to a change in the operation mode of the electric device is received; A control program for a controller that executes processing. An electric device having different power consumption according to the operation mode;
A controller for controlling the electrical equipment,
The controller is
An accepting unit for accepting an instruction to reduce or stop power consumption due to a change in operation mode for the electrical device;
When the reception unit receives an instruction to reduce or stop power consumption due to a change in operation mode for the electrical device, the operation mode is changed for the electrical device so that the power consumption decreases stepwise. A power management system including an adjustment instruction unit for instructing. Further comprising an operation means for changing an operation mode of the electric device,
When the adjustment instruction unit of the controller receives an instruction to reduce or stop power consumption due to a change in operation mode for the electrical device in the reception unit, the power consumption gradually decreases via the operation unit. The power management system according to claim 9, wherein the electric device is instructed to change the operation mode. It is provided for each electric device, and further comprises a measuring instrument for measuring the power consumption of the corresponding electric device,
The power management system according to claim 9 or 10, wherein the measuring device transmits the measured power consumption of the electric device to the controller.

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