JP2012147676A - Electric energy control system, control unit, and electric device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric energy control system for controlling electric energy consumed by a plurality of electric devices, the system preventing damage to the devices due to a power outage or a voltage drop caused by an excessive increase in electric power consumption.SOLUTION: A control unit 10 executes the steps of: monitoring whether a total of electrical energy consumed by a plurality of target home electrical appliances 30 exceeds a first consumption threshold set at a value smaller than limit electric energy that represents maximum electric energy to be supplied to the plurality of target home electrical appliances 30 (S160); and transmitting an instruction to shift to a power-saving mode to each target home electrical appliance 30 when the monitored electric energy exceeds the first consumption threshold (S170). Upon reception of the instruction to shift to the power-saving mode from the control unit 10, each target home appliances 30 shifts from a normal mode, in which functions of the each target home appliance operate with normal electric energy, to the power-saving mode in which the functions operate with electric energy less than the normal electric energy.

Description

  The present invention relates to a power amount management system that manages the amount of power consumed by a plurality of electrical devices, and a management apparatus and electrical devices that constitute the system.

  2. Description of the Related Art Conventionally, a system in which a plurality of power generation facilities and consumers who consume power generated by each power generation facility are connected so as to be communicable is known. In this system, information on the amount of power consumed by consumers is transmitted to the power generation facility, and the power generation facility controls the amount of power generation based on the information on the amount of power, thereby eliminating excessive power supply and power shortage. be able to.

JP 2004-56996 A

  However, in the above system, since there is no mechanism for each consumer to reduce the amount of power consumed, the amount of power consumed by each consumer becomes larger than expected and exceeds the limit of the amount of power generated by the power generation facility. In the worst case, a power outage occurred.

Such a problem is not limited to a large-scale power generation facility, but can also occur in a private power generation system for each home. In addition, the problem is not limited to the power generation facility, and can occur even when the amount of power that can be used is determined (for example, when the amount of current that can be used in each home is determined). In view of the problems, an object of the present invention is to prevent power failure and device damage due to voltage drop due to excessive increase in power consumption in a power management system that manages power consumption by a plurality of electrical devices. .

The invention according to claim 1, which has been made to achieve the above object,
A power amount management system for managing a power amount consumed by a plurality of electrical devices by a management device,
The management device
The total amount of power consumed by the plurality of electrical devices exceeds a first allowable power amount set to a value smaller than a limit power amount representing the maximum power amount that can be supplied to the plurality of electrical devices. First monitoring means for monitoring whether or not,
A power saving mode transition command transmitting means for transmitting a power saving mode transition command to each of the electrical devices when the amount of power monitored by the first monitoring means exceeds the first allowable power amount;
With
Each of the electric devices is
At least a normal mode in which the function of each electrical device operates with a normal power consumption, and a power saving mode in which the function of each electrical device operates with a power consumption smaller than the normal power consumption. Selection operation means for selecting any mode from various modes including, and operating the function of each electrical device in any one of the modes;
Upon receiving the power saving mode transition command from the management device, selection control means for causing the selection operation means to select the power saving mode;
It is characterized by having.

  That is, in this system, when the total amount of power consumed by the plurality of electrical devices exceeds the first allowable power amount, the management device sends a command to each electrical device to operate in the power saving mode, and Upon receiving this command, the device operates by switching the function of the electric device to the power saving mode.

  Therefore, according to such a power amount management system, it is possible to prevent the total amount of power consumption by a plurality of electric devices from exceeding the limit power amount. Therefore, it is possible to prevent device damage due to power failure or voltage drop due to excessive increase in power consumption by a plurality of electric devices.

Moreover, in the electric energy management system of Claim 1, as described in Claim 2,
The management device
A value in which the total amount of power consumed by the plurality of electrical devices is smaller than the limit power amount after a predetermined time has elapsed since the power saving mode transition command was transmitted by the power saving mode transition command transmitting means. Second monitoring means for monitoring whether or not the second allowable power amount set in the
A normal mode transition command transmitting means for transmitting a normal mode transition command to each of the electrical devices when the amount of power monitored by the first monitoring means is less than or equal to the second allowable power amount;
With
The electrical device selection control means may cause the selection operation means to select the normal mode when receiving the normal mode transition command from the management device.

  According to such a power amount management system, when the management device can afford a power consumption amount by a plurality of electric devices (that is, when it is equal to or less than the second allowable power amount), the operation mode of the electric device is omitted. Return from power mode to normal mode.

Therefore, the normal capability of each electrical device can be exhibited by each electrical device.
Further, when each electric device returns to the normal mode, the total amount of power consumption by the plurality of electric devices can be prevented from exceeding the limit power amount.

  Furthermore, in the power amount management system according to claim 1 or 2, the management device may include each means constituting the electric device as described in claim 3, and may function as the electric device.

  That is, at least one of the electrical devices functions as a management device. Therefore, according to such an electric energy management system, it is not necessary to arrange the management device separately from the electric device, and thus space can be saved.

Furthermore, in the electric energy management system according to any one of claims 1 to 3, as described in claim 4,
Comprising a power generation device comprising at least power generation means for generating electric power consumed by the plurality of electrical devices;
The management device
And an increase / decrease unit that detects the amount of power generated by the power generation device, sets the amount of power to the limit power amount, and increases / decreases the allowable power amount referred to by the monitoring unit in conjunction with the increase / decrease of the limit power amount. It may be.

According to such an electric energy management system, the allowable electric energy can be changed in response to fluctuations in the electric energy that can be supplied to the electric device, so that the electric power generated by the power generator can be efficiently used by the electric device. Can be used.

In addition, in the electric energy management system according to claim 4, as described in claim 5,
The power generator is
A power generation control means for increasing or decreasing the amount of power generated by the power generation means in response to a command to change the power generation amount received from the management device;
The management device
A power generation amount increase command transmission unit may be provided that transmits a power generation amount increase command to the power generation device when the power saving mode transition command transmission unit transmits the power saving mode transition command.

  According to such a power amount management system, when the amount of generated power is insufficient, such as when shifting to the power saving mode, the amount of generated power can be increased with respect to the power generation device. Can be supplemented. Further, when the present invention is combined with the invention described in claim 2, the operation mode of the electric device can be quickly returned to the normal mode.

  Further, in the power amount management system according to any one of claims 1 to 5, each device constituting the system performs communication between the devices by power line communication as described in claim 6. Power line communication means may be provided.

  According to such a power amount management system, communication between devices is performed using a power line that supplies power to each device. Therefore, it is necessary to arrange a cable for wired communication or a wireless communication device for wireless communication. Absent. Electrical equipment can be placed at any location, such as a household outlet.

Next, the invention according to claim 7 is a management device for managing the amount of power consumed by a plurality of electrical devices,
The management apparatus according to any one of claims 1 to 6 is provided as the management apparatus.

  According to such a management apparatus, since the management apparatus according to any one of claims 1 to 6 is provided as the management apparatus, the total amount of power consumption by the plurality of electric devices is determined as the limit power amount. Can not exceed. Therefore, it is possible to prevent device damage due to power failure or voltage drop due to excessive increase in power consumption by a plurality of electric devices.

Next, an invention according to claim 8 is an electrical device in which power consumption is managed by a management device,
As an electrical device, the electrical device according to any one of claims 1 to 6 is provided.

  According to such an electric device, when the electric device receives the power saving mode transition command, the electric device operates by switching to the power saving mode. Therefore, the total amount of power consumed by the plurality of electric devices managed by the management device is the limit power amount. Can not be exceeded. Therefore, it is possible to prevent device damage due to power failure or voltage drop due to excessive increase in power consumption by a plurality of electric devices.

The invention according to claim 9 made to achieve the above object is
A power amount management system for managing a power amount generated by a power generation device including a power generation means for generating power consumed by an electrical device by a management device,
The power generator is
A power generation control means for increasing or decreasing the amount of power generated by the power generation means in response to a command to change the power generation amount received from the management device;
The management device
First monitoring means for monitoring whether or not the amount of power consumed by the electric device exceeds a first allowable power amount set to a value smaller than a limit power amount representing the amount of power supplied by the power generation means. When,
A power generation amount increase command transmission unit that transmits a power generation amount increase command to the power generation device when it is determined by the first monitoring unit that the amount of power consumed by the electrical device exceeds the first allowable power amount. It is characterized by having prepared.

  According to such a power amount management system, when the amount of generated power is insufficient, the amount of generated power can be increased with respect to the power generation device, so that the insufficient amount of power can be compensated. Therefore, it is possible to prevent equipment damage due to a power failure or voltage drop due to an excessive increase in power consumption by the electrical equipment.

It is a block diagram which shows schematic structure of the management system of Example 1. FIG. It is a flowchart which shows a management process. It is a flowchart which shows an electric power generation control process. It is a flowchart which shows household appliance processing. It is a block diagram which shows schematic structure of the management system of Example 2. FIG. It is a flowchart which shows a self-supporting household appliance process. It is a flowchart which shows the master process among self-supporting household appliance processes. It is the flowchart (a) which shows the household appliance process of a modification, and the flowchart (b) which shows the management process of a modification.

Embodiments according to the present invention will be described below with reference to the drawings.
[Example 1]
FIG. 1 is a block diagram showing a schematic configuration of a power amount management system 1 (hereinafter referred to as a management system 1) to which the present invention is applied.

  The management system 1 manages the power generation device 20, home appliances that operate using the power generated by the power generation device 20, and the amount of power generated by the power generation device and the amount of power consumed by the home appliances. Device 10.

  The household electrical appliances include a mode switching function that can switch between a normal mode that operates with normal power consumption and a power saving mode that operates with less power consumption than the normal mode, and a compatible household appliance 30 that includes a power line communication function. (Electrical equipment) and non-compliant home appliances 40 that do not have these functions.

  As described above, the management device 10, the compatible home appliance 30, and the non-compatible home appliance 40 configuring the management system 1 are connected to each other via the home power line communication network 5. Further, the power generation device 20 is connected to the power line communication network 5 via the management device 10.

The management device 10 includes a management control unit 11, a breaker 13, a power amount monitoring unit 15, and a communication unit 17 (power line communication means).
The management control unit 11 is configured as a known microcomputer including a CPU, a ROM, a RAM, and the like, and executes various processes such as a management process described later. Moreover, the management control part 11 can perform power line communication via the communication part 17 comprised as a communication interface, and transmits a control command with respect to the corresponding household appliance 30 and the electric power generating apparatus 20 via this communication part 17. .

The power amount monitoring unit 15 monitors the amount of power (substantially current) supplied from the power generation device 20 to the home power line communication network 5 via the management device 10, and sends the result to the management control unit 11.
In addition, the breaker 13 is configured such that when the current generated by the power supplied from the power generation device 20 to the home power line communication network 5 via the management device 10 exceeds a preset current amount, the power generation device 20 supplies the home power line communication network. The power supplied to 5 is cut off.

Next, the power generation device 20 includes a power generation control unit 21, a power generation unit 23 (power generation unit), and a communication unit 25 (power line communication unit).
The power generation control unit 21 is configured as a known microcomputer including a CPU, a ROM, a RAM, and the like, and executes various processes such as a power generation process described later. The power generation control unit 21 can perform power line communication via the communication unit 25 configured as a communication interface, and receives a command from the management device 10 via the communication unit 25.

  The power generation unit 23 is configured, for example, as a fuel cell unit or a diesel generator, and controls the amount of power generation according to a command from the power generation control unit 21. The power generation amount (power generation level) can be set, for example, in 10 steps, and the power generation control unit 21 controls the power generation amount in steps by transmitting a control signal to the power generation unit 23.

Next, the corresponding home appliance 30 includes a home appliance control unit 31, a communication unit 33 (power line communication means), a mode storage unit 35, and a configuration 39 for each home appliance.
The home appliance control unit 31 is configured as a well-known microcomputer including a CPU, a ROM, a RAM, and the like, and executes various processes such as a home appliance process described later. Moreover, the household appliance control part 31 can perform power line communication via the communication part 33 comprised as a communication interface, and receives the instruction | command from the management apparatus 10 via this communication part 33. FIG.

  As the configuration 39 for each home appliance, for example, if the corresponding home appliance 30 is an electric pot, a configuration required as an electric pot is shown. If the corresponding home appliance 30 is an air conditioner, a configuration required as an air conditioner is shown.

Further, the non-compliant home appliance 40 includes only a configuration for each home appliance referred to as the compatible home appliance 30.
Next, processing performed in the management apparatus 10 will be described with reference to FIG. FIG. 2 is a flowchart showing management processing executed by the management control unit 11 of the management apparatus 10.

  The management process is a process executed when the management apparatus 10 is activated. First, the power consumption monitoring unit 15 is used to monitor the power consumption flowing from the power generation apparatus 20 to the power line communication network 5 (S110). ). And it is determined whether the information of the setting output (limit electric energy) of the power generator 20 was received from the power generator 20 (S115: increase / decrease means).

  If the information of the setting output is received from the power generator 20 (S115: Yes), each threshold value (margin threshold value, first consumption threshold value, second consumption threshold value) is calculated according to this setting output (S120: increase / decrease means) ). Here, each threshold value is calculated by multiplying the set output by a constant (value greater than 0 and less than 1) set for each threshold value. Each threshold is set so as to satisfy the relationship of first consumption threshold> second consumption threshold> room threshold. By satisfying such a relationship for each threshold, it is possible to prevent generation of useless power and to quickly return from the power saving mode to the normal mode.

If the setting output information is not received from the power generation device 20 (S115: No), the process proceeds to S130.
Subsequently, in S130, it is determined whether or not a predetermined time set in advance has elapsed since the power generation amount increase command, which is a command for increasing the power generation amount, was transmitted to the power generation device 20 last time (S130). The predetermined time referred to here indicates a time required for the power generation apparatus 20 that has received a command to increase (or decrease) the power generation amount to change the output, and is set to about 2 seconds, for example.

If the predetermined time has elapsed (S130), it is determined whether or not the surplus power amount obtained by subtracting the power consumption amount acquired in S110 from the set output is greater than the surplus threshold value (S140).
If the surplus power amount is greater than the surplus threshold value (S140: Yes), a power generation amount decrease command that is a command to decrease the power generation amount is transmitted to the power generation apparatus 20 (S150).

  And when the process of S150 is complete | finished, when the predetermined time has not passed since transmitting the electric power generation amount increase instruction | command in S130 (S130: No), and the marginal electric energy is less than a margin threshold value in S140 In (S140: No), the process proceeds to S160.

  Next, in S160, it is determined whether or not the power consumption flowing from the power generator 20 to the power line communication network 5 is greater than the first consumption threshold (S160: first monitoring means). If the power consumption is less than the first threshold (S160: No), the process proceeds to S190. Moreover, if there is more power consumption than a 1st threshold value (S160: Yes), a power saving mode transfer command will be broadcast with respect to each corresponding household appliance 30 (S170: Power saving mode transfer command transmission means).

Subsequently, a power generation amount increase command is transmitted to the power generation device 20 (S180: power generation amount increase command transmission means), and the process proceeds to S190.
In S190, it is determined whether or not an inquiry for permission to shift to the normal mode for requesting permission to return to the normal mode is received from any of the corresponding home appliances 30 (S190). If an inquiry for permission to shift to the normal mode has not been received (S190: No), the management process is terminated as it is.

  If an inquiry for permission to shift to the normal mode has been received (S190: Yes), it is determined whether or not the power consumption amount flowing from the power generation device 20 to the power line communication network 5 is smaller than the second consumption threshold (S200: Second monitoring means).

  If the power consumption is less than the second consumption threshold (S200: Yes), a normal mode shift permission command for permitting the return to the normal mode is transmitted to each corresponding home appliance 30 (S210: normal mode shift command transmission). Means), the management process is terminated.

  If the power consumption is greater than the second consumption threshold (S200: No), a normal mode transition prohibition command for prohibiting the return to the normal mode is transmitted to each corresponding home appliance 30 (S220), and the management process is performed. Exit.

  Next, the power generation control process executed in relation to the management process will be described with reference to FIG. FIG. 3 is a flowchart showing power generation control processing executed by the power generation control unit 21 of the power generation apparatus 20. The power generation control process corresponds to the power generation control means in the present invention.

In the power generation control process, first, the power generation unit 23 is operated with the set output that has been set to generate power (S310), and the setting output at this time is transmitted to the management apparatus 10 (S315).
Subsequently, it is determined whether or not a power generation amount reduction command is received from the management device 10 (S320). If the power generation amount reduction command has been received (S320: Yes), the power generation amount reduction operation set by lowering the one-step power generation level is performed (S330), and the setting output at this time is transmitted to the management apparatus 10. (S335).

  When the process of S330 is completed, or when the power generation amount decrease command is not received from the management device 10 in S320, it is determined whether or not the power generation amount increase command is received from the management device 10 (S340). If the power generation amount increase command is received (S340: Yes), the power generation amount increase operation set by raising the one-stage power generation level is performed (S350), and the setting output at this time is transmitted to the management device 10. (S355). The power generation control process is terminated.

If the power generation amount increase command has not been received in S340 (S340: No), the power generation amount control process is terminated.
Next, home appliance processing executed in relation to the management processing and the power generation control processing will be described with reference to FIG. FIG. 4 is a flowchart showing home appliance processing executed by the home appliance control unit 31 of the corresponding home appliance 30. The home appliance processing corresponds to the selection operation means in the present invention.

  In the home appliance processing, first, it is determined whether or not a power saving mode transition command is received from the management device 10 (S410: selection control means). If the power saving mode shift command has been received (S410: Yes), the operation shifts to the power saving mode (S420: selection control means). Here, the power saving mode is different for each corresponding home appliance 30. For example, when the corresponding home appliance 30 is an electric pot, if the electric pot is set to the power saving mode, A heat retention mode that does not consume power (a mode that keeps the temperature of hot water constant) is allowed, but a water heater mode that consumes a lot of power (a mode that boils hot water) is prohibited. Further, for example, when the corresponding home appliance 30 is an air conditioner, if the air conditioner is set in the power saving mode, air conditioning for operating the compressor and the heat pump is prohibited, and only air blowing is permitted.

  That is, when the corresponding home appliance 30 is set in the power saving mode, the operation is performed such that the amount of power consumption is reduced by restricting the function as compared with the case of operating in the normal mode.

  When the process of S420 is completed and if the power saving mode transition command is not received in S410 (S410: No), it is determined whether or not the current mode is the power saving mode (S430). If the current mode is not the power saving mode (S430: No), the home appliance processing is terminated as it is.

  If the current mode is the power saving mode (S430: Yes), it is determined whether or not the duration time of the power saving mode is equal to or longer than a predetermined time set in advance (S440). If the duration time of the power saving mode is equal to or longer than the predetermined time (S440: Yes), an inquiry for permission to shift to the normal mode is transmitted to the management apparatus 10 (S450).

  When the process of S450 is completed and when the duration of the power saving mode is less than the predetermined time in the process of S440, it is determined whether or not a normal mode transition permission command is received from the management apparatus 10 (S460). ).

If the normal mode transition permission command is received (S460: Yes), the process shifts to the normal mode (S470), and the home appliance process is terminated.
Moreover, if the normal mode transition permission command has not been received (S460: No), the home appliance processing is terminated as it is.

In the management system 1 described in detail above, the management control unit 11 of the management device 10 determines that the total amount of power consumed by the plurality of corresponding home appliances 30 is the management processing 10 It is monitored whether or not a first consumption threshold value set to a value smaller than a limit power amount representing the maximum power amount that can be supplied is exceeded (S160). Then, when the amount of power to be monitored exceeds the first consumption threshold, a power saving mode transition command is transmitted to each corresponding home appliance 30 (S170).
.

  In addition, each corresponding home appliance 30 has a normal mode in which the function of each corresponding home appliance 30 operates with normal power consumption in home appliance processing, and the function of each corresponding home appliance 30 is less than the normal power consumption. One of various modes including a power saving mode that operates with power consumption is selected, and the function of each corresponding home appliance 30 is activated in any mode. In particular, when a power saving mode shift command is received from the management apparatus 10, the mode shifts to the power saving mode (S410, S420).

  That is, in this system, when the total amount of power consumed by the plurality of corresponding home appliances 30 exceeds the first consumption threshold, the management device 10 sends a command to each corresponding home appliance 30 to operate in the power saving mode. Upon receiving this command, the corresponding home appliance 30 operates by switching the function of the corresponding home appliance 30 to the power saving mode.

  Therefore, according to such a management system 1, it is possible to prevent the total amount of power consumption by the plurality of corresponding home appliances 30 from exceeding the limit power amount. Therefore, it is possible to prevent equipment damage due to power failure or voltage drop due to excessive increase in power consumption by the plurality of compatible home appliances 30.

  In addition, the management device 10 determines that the total amount of power consumed by the plurality of compatible home appliances 30 is less than the limit power amount after a predetermined time has elapsed since the power saving mode transition command was transmitted in the management process. It is monitored whether the second consumption threshold set to a small value is exceeded (S200).

And the management apparatus 10 transmits normal mode transfer instruction | indication with respect to each corresponding household appliance 30, when the electric energy to monitor is below a 2nd consumption threshold value (S210).
Moreover, the household appliance control part 31 of the corresponding household appliance 30 will transfer to normal mode, if a normal mode transfer instruction | indication is received from the management apparatus 10 by household appliance process.

  Therefore, according to such a management system 1, when the management device 10 can afford the power consumption by the plurality of corresponding home appliances 30 (that is, when it is equal to or less than the second consumption threshold), the operation of the corresponding home appliance 30 is performed. The mode is returned from the power saving mode to the normal mode. Therefore, the normal capability which each corresponding household appliance 30 has can be demonstrated to each corresponding household appliance 30.

Moreover, when each corresponding home appliance 30 returns to the normal mode, the total amount of power consumed by the plurality of corresponding home appliances 30 can be prevented from exceeding the limit power amount.
Furthermore, the management system 1 includes a power generation device 20 including a power generation unit 23 that generates power consumed by at least a plurality of corresponding home appliances 30.

  Then, the management device 10 detects the amount of power generated by the power generation device 20 in the management process, sets this power amount as the limit power amount, and allows the allowable power amount (threshold value) in conjunction with the increase / decrease in the limit power amount. ) Is increased or decreased (S115, S120).

  Therefore, according to such a management system 1, the allowable power amount can be changed in accordance with the fluctuation of the power amount that can be supplied to the corresponding home appliance 30, so that the electric power generated by the power generator 20 is used as the corresponding home appliance 30. Can be used efficiently.

In addition, the power generation control unit 21 of the power generation device 20 increases or decreases the amount of power generated by the power generation unit 23 according to a command to change the power generation amount received from the management device 10 in the power generation control process.
Then, when the power saving mode shift command is transmitted, the management device 10 transmits a power generation amount increase command to the power generation device 20 (S180).

  Therefore, according to such a management system 1, when the amount of generated power is insufficient, such as when shifting to the power saving mode, the amount of generated power can be increased with respect to the power generation apparatus 20, Can supplement the amount. Moreover, the operation mode of the corresponding home appliance 30 can be quickly returned to the normal mode.

In the management system 1, each device configuring this system includes communication units 17, 25, and 33 that perform communication between the devices by power line communication.
Therefore, according to such a management system 1, since communication is performed between devices using a power line that supplies power to each device, it is necessary to arrange a cable for wired communication and a wireless communication device for wireless communication. There is no. The corresponding home appliance 30 can be placed at an arbitrary position such as a household outlet.

[Example 2]
Next, another type of management system 2 will be described. In the present embodiment (embodiment 2), only portions different from the management system 1 of the first embodiment will be described in detail, and the same portions as those of the management system 1 of the first embodiment will be denoted by the same reference numerals and description thereof will be omitted. To do.

FIG. 5 is a block diagram showing a schematic configuration of the management system 2 of the present embodiment.
The management system 2 bears the function of managing the corresponding home appliance 30 and the power generation device 20 included in the management device 10 of the first embodiment when any one of the corresponding home appliances 30 becomes a master device. In addition, only a plurality of compatible home appliances 30 and power generation devices 20 are connected to the home power line communication network 5. That is, in the management system 2, the management device 10 is not arranged, and the power generation device 20 is directly connected to the home power line communication network 5.

Moreover, the corresponding home appliance 30 includes a power amount detection unit 37 that detects the amount of power consumed by itself.
In such a management system 2, each corresponding home appliance 30 executes the processing shown in FIGS. FIG. 6 is a flowchart showing a self-contained home appliance process executed by the home appliance control unit 31 of the corresponding home appliance 30, and FIG. 7 is a flowchart showing a master process of the self-contained home appliance process. In the master process, when the corresponding home appliance 30 that functions as a master device transmits a command to another corresponding home appliance 30, the same command is also transmitted to the own device.

In the self-contained home appliance processing, first, it is determined whether or not the self-device is set as a master device that functions as a management device (S510).
If the own apparatus is set as the master apparatus (S510: Yes), the process proceeds to S540. If the own device is not set as the master device (S510: No), it is determined whether another device (other compatible home appliance 30) is set as the master device (S520).

If no other device is set as the master device (S520: No), the own device is set as the master device (S530), and the process proceeds to S540.
In S540, the master process shown in FIG. 7 is executed.

As shown in FIG. 7, the master process first determines whether or not information on the power consumption amount has been received from another device (S610).
If power consumption information has been received from another device (S610: Yes), the received power consumption information is controlled together with the power consumption information detected by the power consumption detection unit 37 of the own device. The data is stored in a memory such as a RAM of the unit 31 (S620).

Subsequently, the total power consumption is calculated based on the stored information on the power consumption of all the devices (S630).
Then, the management process (excluding S110) shown in FIG. 2 is executed (S640), and the master process is terminated.

When the master process ends, the process returns to FIG. 6 to execute the home appliance process shown in FIG. 4 (S570), and the independent home appliance process ends.
On the other hand, if another device is set as the master device in S520 (S520: Yes), it is determined whether or not a predetermined time has passed since the current amount information was transmitted from the own device last time. (S550).

  If the predetermined time has elapsed (S550: Yes), the power consumption amount consumed by the own device is transmitted to the master device (S560), the home appliance processing shown in FIG. 4 is executed (S570), and the independent home appliance processing is terminated. To do.

Moreover, if the predetermined time has not passed (S550: No), the household appliance process shown in FIG. 4 will be performed (S570), and an independent household appliance process will be complete | finished.
As described above, the management apparatus 10 according to the present embodiment includes each unit configuring the corresponding home appliance 30 and functions as the corresponding home appliance 30.

  That is, at least one of the compatible home appliances 30 functions as the management device 10. Therefore, according to such a management system 2, since it is not necessary to arrange the management apparatus 10 separately from the corresponding home appliance 30, space can be saved.

[Other Embodiments]
Embodiments of the present invention are not limited to the above-described embodiments, and can take various forms as long as they belong to the technical scope of the present invention.

  For example, in the above embodiment, when switching between the normal mode and the power saving mode, the mode transition command is transmitted to all the corresponding home appliances 30, but the mode transition command is transmitted only to a specific corresponding home appliance 30. You may do it.

A specific example in this case is shown in FIG. FIG. 8A is a flowchart illustrating home appliance processing according to the modification, and FIG. 8B is a flowchart illustrating management processing according to the modification.
In the home appliance process shown in FIG. 8A, before the process of S410, information on the power consumption in the normal mode and the power consumption in the power saving mode is transmitted to the master device (S405).

  And the process after S160 in a management process performs a process as shown in FIG.8 (b). That is, in S160, if the power consumption is greater than the first threshold (S160: Yes), the excess power exceeding the first consumption threshold is calculated (S710).

  Subsequently, it is determined whether or not information on the power consumption in the normal mode and the power consumption in the power saving mode has been received (S720). If information on the power consumption in the normal mode and the power consumption in the power saving mode is received (S720: Yes), an identifier (product number) for identifying the corresponding home appliance 30 using the received power consumption information Or the like (ID, etc.) and stored in a memory such as a RAM (S730), and the process proceeds to S740.

  If information on the power consumption in the normal mode and the power consumption in the power saving mode is not received in S720 (S720: No), the mode is switched according to the excess power calculated in S710. A corresponding home appliance 30 is selected (S740).

  Here, in the processing of S740, for example, in the current normal mode compatible home appliance 30, the difference in the power consumption between the normal mode and the power saving mode is equal to or greater than the excess power amount, and the excess power amount is equal to the excess power amount. Choose the closest one.

  In addition, even when the power consumption amount difference between the normal mode and the power saving mode is selected to be less than or equal to the excess power amount, a plurality of corresponding home appliances 30 are selected, and the normal mode in each corresponding home appliance 30 is selected. The combination of the power consumption differences between the power saving mode and the power saving mode is equal to or greater than the excess power amount and is closest to the excess power amount.

Then, a power saving mode transition command is transmitted to the selected corresponding home appliance 30 (S750).
Then, the process of S180 and S190 is performed, and when an affirmative determination is made in S190, the total power consumption when the corresponding home appliance 30 set in the power saving mode is returned to the normal mode is calculated (S760). .

Then, it is determined whether the total power consumption is less than a preset third threshold value (S770).
If the total power consumption is less than the third threshold (S770: Yes), the process of S210 is executed, and the management process is terminated. If the total power consumption is greater than the third threshold (S770: No), the process of S220 is executed, and the management process is terminated.

  According to such a management system, since only the minimum required compatible home appliance 30 is switched to the power saving mode, it is possible to prevent the amount of power consumption from increasing excessively without reducing the capability of the compatible home appliance 30 as much as possible. .

  Moreover, in the said Example, although comprised so that the management apparatus 10 and the some corresponding | compatible household appliance 30 may monitor electric energy (electric current amount), for example, a power line communication function is included in a part of the household power line communication network 5. It is also possible to monitor the amount of electric power by disposing a voltage measuring device having the above and detecting an abnormality such as a voltage drop using the voltage measuring device.

  In this case, since the abnormality can be detected only by arranging the voltage measuring device at one place, the configuration of the management system can be simplified. Moreover, since a voltage measuring device can transmit the monitoring result of a voltage with power line communication with respect to the corresponding household appliance 30 which functions as the management apparatus 10 or a master apparatus, a voltage measuring device can be arrange | positioned in arbitrary positions. it can.

  DESCRIPTION OF SYMBOLS 1, 2 ... Management system, 5 ... Power line communication network, 10 ... Management apparatus, 11 ... Management control part, 13 ... Breaker, 15 ... Electric power amount monitoring part, 17 ... Communication part, 20 ... Power generation apparatus, 21 ... Power generation control part , 23 ... power generation unit, 25 ... communication unit, 30 ... compatible home appliance, 31 ... home appliance control unit, 33 ... communication unit, 35 ... mode storage unit, 37 ... power amount detection unit, 39 ... configuration for each home appliance, 40 ... non Compatible home appliances.

Claims (1)

A power amount management system for managing a power amount consumed by a plurality of electrical devices by a management device,
The management device
The total amount of power consumed by the plurality of electrical devices exceeds a first allowable power amount set to a value smaller than a limit power amount representing the maximum power amount that can be supplied to the plurality of electrical devices. First monitoring means for monitoring whether or not,
A power saving mode transition command transmitting means for transmitting a power saving mode transition command to each of the electrical devices when the amount of power monitored by the first monitoring means exceeds the first allowable power amount;
With
Each of the electric devices is
At least a normal mode in which the function of each electrical device operates with a normal power consumption, and a power saving mode in which the function of each electrical device operates with a power consumption smaller than the normal power consumption. Selection operation means for selecting any mode from various modes including, and operating the function of each electrical device in any one of the modes;
Upon receiving the power saving mode transition command from the management device, selection control means for causing the selection operation means to select the power saving mode;
An electric energy management system comprising:

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