JP2005253202A - Power control system, power control method, program, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that, when a generator such as fuel cell is employed in home, the generated power of the generator can not catch up with fluctuation in power consumption of equipments, resulting in occurrence of excessive power. <P>SOLUTION: A specific equipment 250 is registered in a specific equipment setting part 330 in advance. If a surplus power which is a difference between the generated power of a generator 100 acquired by a generated power measuring part 110 and power consumption of all equipments acquired by a main power measuring part 170 is generated as a general equipment 200 stops, the specific equipment 250 is operated to effectively use the surplus power. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a power control system, a power control method, a program, and a program recording medium that effectively use surplus generated power of a generator.

  When a generator such as a fuel cell, a gas engine, or a gas turbine is introduced into a general household, the problem is the magnitude of fluctuations in the power load in the general household. These generators can be expected to improve the overall efficiency of energy utilization by effectively using waste heat together with the generated power, but none of them has good power generation follow-up to fluctuations in the power load of home appliances used in ordinary households.

  That is, FIG. 4 is an example of an air conditioner. The maximum power / rated power of the air conditioner is 690 W / 350 W for the 2.2 kW type, 780 W / 420 W for the 2.5 kW type, and 900 W / 475 W for the 2.8 kW type during cooling. FIG. 4 shows a power consumption trend of the 2.5 kW type. As can be seen from FIG. 4, the current air conditioner generally rises up to about 1 minute. In addition, when the air conditioner that was operating at maximum power is turned off, the power consumption becomes almost zero in 10 seconds.

  On the other hand, the load response performance of a fuel cell, for example, as a generator is 1 W / s for both output increase and decrease with the latest target specifications. Therefore, it takes 5 minutes to change the output by 300 W and 10 minutes to change the output by 600 W.

  Therefore, when turning off devices that consume large amounts of power, such as air conditioners, in general households, it is currently impossible to control the output of the generator so as to follow the above power load fluctuations. There is a problem that arises. There are two ways to use this effectively.

  The first means is to sell surplus power to an external power company (sell power). In this case, the unit price of surplus power undertaken by the external power company is equal to or higher than the power generation cost of the generator. There is no guarantee, and there is a problem that the more you sell it, the more deficit it becomes. The second means is to shift the time zone in which surplus power can be stored in a storage battery or the like, but there is a problem that it takes a large initial cost to introduce the storage battery and is not practical for introduction to a general household. is there.

  In addition, when the generator is operated so as to follow the fluctuation of the thermal load in the home, there is a problem that surplus power is generated without using all the generated power.

In order to cope with the above problem, conventionally, there has been a method of predicting a power load fluctuation of a home appliance and operating a generator based on a prediction result (see, for example, Patent Document 1).
JP 2003-134888 A

  However, power load fluctuations of home appliances are caused by irregular and irregular activities of humans who handle them, and it is difficult to predict accurately. Moreover, even if it can be predicted accurately, load fluctuations exceeding the power generation follow-up performance of the generator cannot be dealt with in the end, resulting in no cost merit.

  That is, there is a problem that surplus power is generated because it is not possible to operate the generator by following the power load fluctuation of the home appliance.

  In consideration of the above-described problems, the present invention provides a power control system, a power control method, a program, and a program record for controlling a device so that the surplus power is effectively used in a home device without selling surplus power to an external power company as much as possible The purpose is to provide a medium.

In order to solve the above-described problem, the first aspect of the present invention is a power control system used in an electrical system in which a generator and a plurality of devices to which the generator supplies power are connected,
A power generation measuring unit for measuring the power generation of the generator;
A main power measurement unit that measures power consumption of the plurality of devices;
When surplus power, which is the difference between the power generation of the generator measured by the power generation measurement unit and the power consumption of all the devices being operated, measured by the main power measurement unit, is generated, A power control system comprising: a specific device control unit configured to operate all or a part of functions of a specific device that is set in advance among the plurality of devices and may be operated with the surplus power. .

  Moreover, 2nd this invention is a power control system of Claim 1 provided with the specific apparatus setting part which presets the said specific apparatus.

In addition, according to a third aspect of the present invention, the specific device setting unit also sets a priority order for operating the specific device when the surplus power is generated,
The power control system according to claim 2, wherein the specific device control unit operates the specific device according to the priority order.

Moreover, 4th this invention acquires the power consumption in case the said specific apparatus setting part drive | operates the function of the said specific apparatus from the said specific apparatus,
The power control system according to claim 2, wherein the specific device control unit operates the specific device according to the acquired power consumption when the surplus power is generated.

  The fifth aspect of the present invention is the device according to claim 1, wherein the specific device is a device having a function that allows a user to stop all or part of the function even when the power is turned on. It is a power control system.

  According to a sixth aspect of the present invention, the function of all or a part of the specific device is a garbage stirring function of a garbage disposal machine, a ventilation function of a ventilation fan installed under the floor or behind the ceiling, or a hot water storage type hot water heating system. The power control system according to claim 5, wherein the power control system has a hot water keeping function of a toilet seat, a watering function of an automatic watering tap, or a charging function of a battery-driven device.

The seventh aspect of the present invention is a power control method used in a distributed generation system in which a generator and a plurality of devices to which the generator supplies power are connected,
A power generation measuring step for measuring the power generation of the generator;
A main power measuring step for measuring power consumption of the plurality of devices;
Among the plurality of devices, the difference between the power generation of the generator measured in the power generation measurement step and all the power consumption of the operated device measured in the main power measurement step. A specific device setting step for setting a specific device that is the device that may be operated with surplus power;
And a specific device control step of operating all or a part of the functions of the specific device when the surplus power is generated.

  Further, the eighth aspect of the present invention is operated in the power control system according to claim 1, wherein the power generation of the generator measured by the power generation measurement unit and the power generation system measured by the main power measurement unit are operated. When surplus power that is a difference from all power consumption of the device occurs, all or part of the specific device that is the device that may be operated with the surplus power that is set in advance among the plurality of devices This is a program for causing a computer to function as a specific device control unit that operates the above function.

  The ninth aspect of the present invention is a recording medium carrying the program according to claim 11 and capable of being processed by a computer.

  In the present invention, surplus power is effectively used in household equipment without selling it to an external power company as much as possible, so that power control that can maximize the benefits of reducing household utility costs by introducing a generator is possible. A system, a power control method, a program, and a recording medium can be provided.

  Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1)
FIG. 1 is a configuration diagram of a power control system in the present embodiment.

  In FIG. 1, the generator 100 is a fuel cell, a gas turbine, a gas engine, or the like. The power generation measuring unit 110 is a device that is installed on the output line of the generator 100 and measures the power generation of the generator 100. The generated power here is instantaneous power generated by the generator 100. The external power supply 150 is a business entity (such as an electric power company) that sells electric power. The main power measuring unit 170 is a device that measures the total power consumption at home. Both the power generation measuring unit 110 and the main power measuring unit 170 use a power sensor or the like.

  The general device 200 is a device that uses a device-specific function when the user wants to use it, that is, an air conditioner, a heating device, lighting, a rice cooker, or the like. The specific device 250 is a device having a function that allows the user to stop all or a part of the function even if the power is turned on. For example, fermentation operation of a garbage disposal machine, ventilation of an underfloor ventilation fan Operation, watering function of automatic water sprinkler (sprinkler), hot water storage tank warming function of hot water type hot water heating toilet seat, charging function of vacuum cleaner with built-in battery, etc. The classification of the general device 200 and the specific device 250 is performed by input to the control unit 300 described later.

  The power generated by the generator 100 is supplied to and consumed by the general device 200 and the specific device 250 via a home distribution board and power line.

  The control unit 300 is physically composed of a CPU, a memory, a communication processing unit, and the like. In the control unit 300, 310 is a communication interface that supports communication media such as a dedicated line, a radio, and a power line. All of the devices 250 are connected. The control unit 300 can obtain the generated power, the main power, and the operation state of the general device 200 and the specific device 250 via the communication interface 310, and can transmit a control signal to the device. The specific device control unit 320 is a device that controls the specific device 250. The specific device setting unit 330 is a device for setting the specific device 250 by the user, and includes a screen interface and an input device.

  Note that the power generation information measured by the power generation measurement unit 110 may be directly input to the specific device control unit 320 without performing the communication interface 310 to perform A / D conversion processing and arithmetic processing. Similarly, the power consumption information of all the general devices 200 and the specific devices 250 measured by the main power measuring unit 170 is directly input to the specific device control unit 320 without going through the communication interface 310, and A / D conversion processing and Arithmetic processing may be performed.

  Next, the operation of this embodiment will be described.

  First, the user sets the specific device 250 using the specific device setting unit 330. The specific device setting unit 330 acquires and holds profile information of all devices in the home via the communication interface 310, that is, device attributes, functions, power consumption when using the functions, and the like. When the device is installed, the content is displayed on the screen to notify the user. As a method of notifying the user, not only display but also sound may be used. The user looks at the profile information of the displayed device and selects whether or not all or part of the functions of the device are regarded as the specific device 250.

  For example, when the user purchases a garbage disposal machine and turns on the power, the specific device setting unit 330 obtains the profile information of the garbage disposal machine via the communication interface 310 and displays the content on the screen. When it is determined that the user can operate the surplus power of the generator 100 with a function that can be stopped, for example, the fermentation operation in the profile information of the garbage processor, the garbage The processor is registered as the specific device 250. At this time, the user can set the specifications such that the time when the garbage processing machine continuously performs one fermentation operation, the total time for fermentation operation per day, and the shortest interval time for stopping the fermentation operation can be set. You can keep it. In addition, it is possible to set a priority order for using surplus power and to determine the operation of the device 250 based on the priority order. The information of the registered device 250 is, for example, a table as shown in FIG. The specific device setting unit 330 outputs this table to the specific device control unit 320.

  On the other hand, the general device 200 is set in the same manner. The device registered as the general device 200 is preferably a device that uses a device-specific function when the user wants to use the device and consumes a large amount of power. For example, an air conditioner or a rice cooker.

  Hereinafter, a description will be given from a state in which the general device 200 is an air conditioner and the generator 100 is operated by controlling the power generation so as to follow the power consumption of the air conditioner.

  When the user stops the air conditioner, the power consumption of the air conditioner rapidly decreases in a few ten seconds, and the generator 100 generates a large amount of surplus power. For example, when the air conditioner is operated at 600 W and the generator 100 is generating power at 700 W following the main power measuring unit 170 and the air conditioner is stopped, the main power is reduced to around 100 W in a few ten seconds. When the generator 100 is a fuel cell, as shown in FIG. 3, it takes about 10 minutes to reduce the 600 W output, and all the power generated during this time is surplus power.

  Therefore, the specific device control unit 320 controls the operation of the registered specific device 250 using the surplus power. When the specific device control unit 320 detects that the air conditioner has stopped via the communication interface 310, the generated power of the generator 100 obtained from the generated power measurement unit 110 and the total power consumption in the home obtained from the main power measurement unit 170 The surplus power is calculated by taking the difference.

  Next, the functions of the specific device 250 that operates with this surplus power are viewed in order of priority from the table of FIG. Since the surplus power is small for the first few seconds, the automatic watering faucet is turned on, the ventilation fan is turned on and the power consumption is controlled in order. When the surplus power increases rapidly, it becomes possible to operate a specific device with large power consumption. In FIG. 3, during the time when the surplus power is maximized, the warming operation of the storage heating / warm water toilet seat, the fermentation operation of the garbage processing machine The ventilation operation of the underfloor fan is turned on, and a total of about 590 W is consumed. When surplus power falls, the operation is stopped from the device with the lower priority. When surplus power falls below 400W, the fermentation operation of the garbage disposal machine, the charging of the vacuum cleaner with built-in battery, the ventilation of the underfloor ventilation fan, and the watering of the automatic water sprinkler are turned on, and a total of about 263W is consumed. The surplus power is preferably consumed by the specific device 250 as much as possible, but if there is inevitably surplus power is sold to the external power source 150 as before.

  As described above, according to the first embodiment, the specific device control unit 320 controls the operation of the specific device 250 set by the user in the specific device setting unit 330 when surplus power is generated. Since the amount of surplus power sold to the external power source 150 is reduced and used as effectively as possible in household equipment, it is possible to maximize the benefits of reducing household energy costs by introducing a generator.

  In the present embodiment, when the operation of the general device 200 is stopped and surplus power is generated, the specific device control unit 320 operates from the function of the specific device 250 with low power consumption with reference to the table of FIG. In the table of FIG. 2, the operation is stopped from the specific device 250 having a low priority when the surplus power is reduced. However, the present invention is not limited to this. When the operation of the general device 200 is stopped and surplus power is generated, referring to the table in FIG. 2, the function of the specific device 250 next to the function of the specific device 250 that was last operated when the surplus power was generated last time is referred to. You may manage to drive. That is, when surplus power is generated for the first time, the operation of the function of the specific device 250 is started in order of priority in the table of FIG. 2, that is, in order from the top of the table of FIG. When the surplus power is exhausted, the operation of the function of the specific device 250 is stopped in order from the top of the table of FIG. Then, when surplus power is generated next time, the operation is started from the function of the specific device 250 next to the function of the specific device 250 that was last operated last time. Specifically, when surplus power is generated for the first time, first, the function of the hot water storage tank warming operation of the hot water storage type hot water heating toilet is operated. Furthermore, since surplus electric power still remains, the function of the fermentation operation of the garbage processing machine (bio type) is operated. Here, it is assumed that surplus power is decreasing. If it does so, the function of the hot water storage tank heat insulation operation of the hot water storage type hot water heating toilet will be stopped, and then the function of the fermentation operation of the garbage processing machine (bio type) will be stopped. Next, when surplus power is generated, the operation is started from the charging function of the battery built-in vacuum cleaner, which is the next function of the fermentation operation function of the garbage processing machine (bio type) that has been started last time. As described above, when surplus power is generated, the function of the specific device 250 is operated frequently by cyclically operating the function of the specific device 250 with reference to the table of FIG. A problem that the functions of the specific device 250 are hardly operated can be avoided. That is, the functions of each specific device 250 can be operated equally.

  Furthermore, in the present embodiment, when the operation of the general device 200 is stopped and surplus power is generated, the specific device control unit 320 operates from the function of the specific device 250 with low power consumption with reference to the table of FIG. In the table of FIG. 2, the operation is stopped from the specific device 250 having a low priority when the surplus power is reduced. However, the present invention is not limited to this. When surplus power is generated and the specific device 250 is operated, the function of the specific device 250 that exceeds the one-time operation time in the table of FIG. 2 may be stopped even if surplus power is generated and can be operated. Absent. For example, it is assumed that surplus power is generated and the fermentation operation function of the garbage processing machine (bio type) is operated. And when this function exceeds 3 minutes which is one operation time, the specific apparatus control part 320 has surplus electric power, and the operation of the fermentation operation function of a garbage processing machine (bio type) is possible. Even so, the operation of this function is stopped. In this way, since the function of the specific device 250 is not frequently operated, the function of the specific device 250 can be appropriately operated. Regarding the function of the hot water storage tank warming operation of the hot water storage type hot water heating toilet seat, the table of FIG. This measures the temperature of the hot water in the hot water storage tank, and the operation time is set once according to the measured temperature of the hot water.

  Furthermore, in the present embodiment, when the operation of the general device 200 is stopped and surplus power is generated, the specific device control unit 320 operates from the function of the specific device 250 with low power consumption with reference to the table of FIG. In the table of FIG. 2, the operation is stopped from the specific device 250 having a low priority when the surplus power is reduced. However, the present invention is not limited to this. When surplus power is generated, the operation is started from the function of the specific device 250 having a higher priority with reference to the table of FIG. 2, and when surplus power is reduced, the operation is started from the function of the specific device 250 having a lower priority. You can stop. At this time, the specific device control unit 320 monitors the elapsed time since the last operation of the function of the specific device 250 is finished, and if this elapsed time has not yet exceeded the interval time of FIG. Even if the priority of the specific device 250 is high, the specific device 250 is not operated. For example, when surplus power is generated, first, the specific device control unit 320 tries to start the function of the hot water storage tank warming operation of the hot water storage hot water toilet seat having the highest priority. Do not drive because the time has not yet exceeded the interval time. Next, the specific device control unit 320 attempts to disclose the operation of the fermentation operation function of the next highest priority garbage processing machine (bio type). If the elapsed time of the specific device 250 is less than 60 minutes, which is the interval time, the specific device control unit 320 starts operating the specific device 250. In this way, it is possible to avoid the problem that only the function of the specific specific device 250 is operated too much. Moreover, regarding the function of the hot water storage tank heat insulation operation of the hot water storage type hot water heating toilet seat, the interval time is described as being changed by setting in the table of FIG. In this method, the temperature of the hot water in the hot water storage tank is measured, and the interval time is set according to the measured temperature of the hot water.

  Furthermore, in the present embodiment, when the operation of the general device 200 is stopped and surplus power is generated, the specific device control unit 320 operates from the function of the specific device 250 with low power consumption with reference to the table of FIG. In the table of FIG. 2, the operation is stopped from the specific device 250 having a low priority when the surplus power is reduced. However, the present invention is not limited to this.

  The specific device control unit 320 may manage the order of the operation start of the specific device 250 and the order of the operation end of the specific device 250 by referring to the table of FIG. That is, the interval time in the table of FIG. 2 is the shortest time from when the function of the specific device 250 is operated once until it is operated again, and the specific device control unit 320 has passed this interval time since the previous operation. Otherwise, it will not drive again. Accordingly, the priority order of the specific device 250 that has not been operated again for the interval time or higher is increased, and the priority order of the specific device 250 that has not been elapsed since the previous operation is decreased. When the surplus power is generated, the specific device control unit 320 starts the operation from the specific device 250 having a high priority, and when the surplus power decreases, the specific device having a low priority in the table of FIG. The operation is stopped from 250. In this way, since the functions of each specific device 250 can be operated at an appropriate operation interval, only the functions of the specific device 250 are frequently operated, or the functions of the specific device 250 are almost operated. The trouble of not being done can be avoided.

  Furthermore, in the present embodiment, the specific device setting unit 330 has been described as setting the specific device 250 according to an instruction from the user, but the present invention is not limited to this. A configuration in which the specific device setting unit 330 is not provided is also possible. That is, it is assumed that information indicating whether each device is a general device 200 or a specific device 250 is held in advance. That is, each device holds in advance information indicating whether the function of the general device 200 or the function of the specific device 250 for each function of the device together with the above-described profile information, and the specific device control unit 320 stores the function of each device. It is also possible to obtain information indicating whether the function of the general device 200 or the function of the specific device 250 from each of these devices for each time, create the table of FIG. 2, and perform the above-described control based on this table.

  The program of the present invention is a program for causing a computer to execute the functions of all or part of the power control system of the present invention described above, and is a program that operates in cooperation with the computer.

  The recording medium of the present invention is a recording medium carrying a program for causing a computer to execute the functions of all or part of the power control system of the present invention described above, and is readable and read by a computer. The program is a recording medium for executing the function in cooperation with the computer.

  The “part of the part” of the present invention means one or several parts of the plurality of parts.

  The “function of the part” of the present invention means the function of all or part of the part.

  Further, one usage form of the program of the present invention may be an aspect in which the program is recorded on a computer-readable recording medium and operates in cooperation with the computer.

  Further, one usage form of the program of the present invention may be an aspect in which the program is transmitted through a transmission medium, read by a computer, and operated in cooperation with the computer.

  The data structure of the present invention includes a database, data format, data table, data list, data type, and the like.

  The recording medium includes a ROM and the like, and the transmission medium includes a transmission medium such as the Internet, light, radio waves, sound waves, and the like.

  The computer of the present invention described above is not limited to pure hardware such as a CPU, but may include firmware, an OS, and peripheral devices.

  As described above, the configuration of the present invention may be realized by software or hardware.

  The power control system, the power control method, the program, and the recording medium according to the present invention effectively use surplus power in household devices without selling them to an external power company as much as possible. It is useful for a power control system, a power control method, a program, a program recording medium, and the like that effectively use surplus generated power of a generator.

Configuration diagram of power control system in Embodiment 1 of the present invention The figure which shows the specific apparatus control table which the specific apparatus setting part 330 produces | generates Surplus power over time The figure which shows the graph which shows the time transition of the power consumption of the air conditioner

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Generator 110 Power generation measurement part 150 External power supply 170 Main power measurement part 200 General equipment 250 Specific equipment 300 Control part 310 Communication interface 320 Specific equipment control part 330 Specific equipment setting part

Claims (9)

A power control system used in an electrical system in which a generator and a plurality of devices to which the generator supplies power are connected,
A power generation measuring unit for measuring the power generation of the generator;
A main power measurement unit that measures power consumption of the plurality of devices;
When surplus power, which is the difference between the power generation of the generator measured by the power generation measurement unit and the power consumption of all the devices being operated, measured by the main power measurement unit, is generated, A power control system comprising: a specific device control unit configured to operate all or a part of functions of a specific device that is a device that may be operated with the surplus power set in advance among the plurality of devices.   The power control system according to claim 1, further comprising a specific device setting unit that sets the specific device in advance. The specific device setting unit also sets a priority for operating the specific device when the surplus power is generated,
The power control system according to claim 2, wherein the specific device control unit operates the specific device according to the priority order. The specific device setting unit acquires power consumption when operating the function of the specific device from the specific device,
The power control system according to claim 2, wherein the specific device control unit operates the specific device according to the acquired power consumption when the surplus power is generated.   The power control system according to claim 1, wherein the specific device is a device having a function that allows a user to stop all or a part of the function even when the power is on.   The function of all or a part of the specific equipment is a garbage agitating function of a garbage disposal machine, a ventilation function of a ventilation fan installed under the floor or behind the ceiling, a hot water warming function of a hot water hot water heating toilet seat, or automatic watering The power control system according to claim 5, wherein the power control system has a sprinkling function for a plug or a charging function for a battery-driven device. A power control method used in a distributed power generation system in which a generator and a plurality of devices to which the generator supplies power are connected,
A power generation measuring step for measuring the power generation of the generator;
A main power measuring step for measuring power consumption of the plurality of devices;
Among the plurality of devices, the difference between the power generation of the generator measured in the power generation measurement step and all the power consumption of the operated device measured in the main power measurement step. A specific device setting step for setting a specific device that is the device that may be operated with surplus power;
And a specific device control step of operating all or part of the functions of the specific device when the surplus power is generated.   The power generation system of the power control system according to claim 1, wherein the power generation of the generator measured by the power generation measurement unit and all the power consumption of the operated device measured by the main power measurement unit. A specific device control unit that operates all or a part of functions of the specific device that is the device that may be operated with the surplus power that is set in advance among the plurality of devices when surplus power that is a difference occurs As a program to make the computer function.   12. A recording medium carrying the program according to claim 11, which can be processed by a computer.

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