JP2013020488A - Home energy management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a home energy management system (HEMS) which economically uses energy according to demand.SOLUTION: In an HEMS 30, a schedule of a resident is input by operating an operation part of the HEMS 30, and the HEMS 30 determines presence/absence of the resident on the basis of the input schedule to control power supply according to the presence/absence. For example, in a case of absence, since a power load is remarkably small during the absence, generated power by a solar power generator 12 is positively sold, and it is controlled to charge the generated power of the solar power generator 12 in a rechargeable battery 24 on the homecoming day and the day before, and to stop various equipment, such as home electric appliances 20, household equipment 22, gas using equipment 56, city water using equipment 58, during the absence period.

Description

  The present invention relates to a home energy management system, and more particularly to a home energy management system that controls supply of energy such as system power and generated power to a building such as a house.

  In recent years, interest in energy saving has been increasing in light of environmental problems, and various technologies have been proposed, such as monitoring of energy such as electric power and control of supply and demand.

  For example, in the technique described in Patent Document 1, a target value calculation unit that obtains a target value (target pattern) of the daily and monthly power energy usage from the actual value that is the past power energy usage stored in the database; A prediction calculation unit that obtains a prediction value (prediction pattern) of the daily energy consumption amount on a daily basis from the current value and the past actual value as the current energy consumption amount, and the daily and monthly basis For example, it has been proposed to appropriately monitor electric power energy by obtaining a predicted value and a target value of electric power energy usage over a long period of time such as a long time.

JP 2010-2111780 A

  However, in the technique described in Patent Document 1, it is proposed to monitor electric power energy, but it does not consider the point of controlling the energy supply according to the energy demand that changes depending on the presence or absence of a person. There is room for improvement.

  The present invention has been made in consideration of the above facts, and an object thereof is to use energy economically according to demand.

  In order to achieve the above object, the invention described in claim 1 includes a power generation means for generating power using natural energy, a storage battery for storing electric power used in a building, and an input means for inputting a schedule of a building resident. And control to supply at least one of the grid power, the stored power of the storage battery and the generated power of the power generation means to the building, and determine the presence or absence of a resident based on the input result of the input means And a control means for controlling the supply destination of the generated power so as to start charging the storage battery with the generated power of the power generation means before a predetermined period of time after being absent. .

  According to the first aspect of the present invention, the power generation means generates power using natural energy. As the power generation means, for example, power generation means using sunlight, hydropower, wind power, geothermal heat, tidal power, or the like can be applied.

  The storage battery stores power used in the building. For example, the storage battery may be charged with the generated power of the power generation means or may be charged with the system power.

  Moreover, the schedule of the building resident can be input by the input means, and the control means is controlled to supply at least one of the system power, the stored power of the storage battery, and the generated power of the power generation means to the building, and the input Based on the input result of the means, the presence or absence of the resident is judged, and the supply destination of the generated power is controlled so that the storage battery starts charging the generated power of the power generation means from a predetermined period before it becomes absent Is done. That is, when the resident comes home, not only can the power generated by the energy-saving power generation means be used, but also the power generated by the power generation means is charged to the storage battery, so that the stored power generation can be used. Economical power can be used. Therefore, it is possible to economically use electric power as energy according to demand by determining the resident's home condition and controlling the supply destination of the generated electric power.

  As in the invention described in claim 2, the control means further controls the power generation means so that the ratio of selling the generated power is higher when the resident is absent than when the resident is present. May be. That is, in the absence, since it is more economical to sell the generated power, the power sale is given priority.

  Further, as in the invention described in claim 3, the control means stops the power supply to a predetermined part of the building and closes the gas plug opening and closing device for opening and closing the gas plug when the resident is absent. Further control to either stop the power supply to gas-using equipment that uses gas, shut down the water tap opening / closing equipment that opens and closes the water tap, or stop the power supply to water-use equipment that uses water You may make it do.

  That is, when the resident is absent, the water supply, gas, or electricity is stopped, so that it is possible to suppress the use of useless power or useless lifeline (water supply or gas) when absent.

  Further, as in the fourth aspect of the invention, when the schedule input by the input means is a visitor schedule, the control means is a predetermined before the resident is at home and the scheduled visitor time or scheduled visitor date. You may make it further control the supply destination of generated electric power so that charge of a storage battery may be started with the electric power generated by the electric power generation means from before the period. In this case, as in the invention described in claim 5, the control means further controls so as to be able to consume more generated power than the normal time during the scheduled visit time or scheduled visit date. You may make it do.

  Further, as in the sixth aspect of the present invention, when the schedule input by the input means is a business trip, the control means uses the generated power of the power generation means before a predetermined time of the business trip schedule or after returning home from the business trip. You may make it further control the supply destination of generated electric power so that charge of a storage battery may be started.

  As described above, according to the present invention, based on the input schedule, the presence or absence of a resident is determined, and control is performed so that charging of generated power is started from a predetermined period before the presence of the resident. By doing so, since the generated power and the stored generated power can be used, there is an effect that energy can be used economically according to demand.

It is a block diagram which shows schematic structure of the home energy management system concerning embodiment of this invention. It is a block diagram which shows schematic structure of HEMS contained in the home energy management system concerning embodiment of this invention. (A) is a figure which shows an example of a schedule input screen, (B) is a figure which shows an example of a schedule table. It is a flowchart which shows an example of the flow of the schedule input process performed by HEMS of the home energy management system concerning embodiment of this invention. It is a flowchart which shows an example of the flow of the electric power supply control performed by HEMS of the home energy management system concerning embodiment of this invention.

  Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a home energy management system according to an embodiment of the present invention. In addition, the dotted line in FIG. 1 shows the flow of information, and the continuous line shows the flow of electric power.

  The home energy management system 10 according to the embodiment of the present invention includes a solar power generation device 12 and can use electric power generated by sunlight in a house.

  The solar power generation device 12 is connected to a distribution board 14 via a power control system (not shown), and the DC power generated by the solar power generation device 12 is converted into AC power by the power control system. Power is supplied to the house by being supplied to the distribution board 14.

  In addition, the distribution board 14 includes green power (for example, power generation devices using hydropower other than sunlight, natural energy such as wind power, geothermal power, tidal power, etc.) 16, grid power 18 supplied from an electric power company, And a storage battery 24 that stores green power including grid power 18 and solar power generation is connected, and at least one of the power stored in the green power 16, grid power 18 and storage battery 24 is supplied to the house. It is possible. In addition, various storage batteries, such as a lithium ion battery, a lead battery, and a sodium battery, can be applied to the storage battery 24.

  The distribution board 14 is connected to a charging stand 26 for charging a vehicle storage battery 28 mounted on a hybrid vehicle, an electric vehicle or the like, and supplies power from the distribution board 14 to the charging stand 26. The vehicle storage battery 28 can be charged. In the present embodiment, it is also possible to supply electric power from the vehicle storage battery 28 to the distribution board 14.

  That is, in the present embodiment, the power generated by the solar power generation device 12, the grid power 18, the power stored in the storage battery 24, and the power stored in the vehicle storage battery 28 are respectively supplied to the house via the distribution board 14. It is possible to supply. The green power 16 may be omitted, or the solar power generation device 12 may be omitted.

  The distribution board 14 is connected to home appliances 20 and housing equipment 22 provided in a house, and also uses gas using equipment (for example, a water heater or a fuel cell) that uses gas, A water supply device (for example, a water heater, a solar collector, etc.) is connected and supplied with the power.

  Further, a HEMS (Home Energy Management System) 30 for managing and controlling energy in the house is connected to the distribution board 14. The HEMS 30 controls the distribution board 14 to supply at least one of the generated power of the solar power generation device 12, the power of the storage battery 24, the system power 18, and the power of the vehicle storage battery 28 to the house. .

  Further, the HEMS 30 can communicate with a predetermined information center 32 and can receive various information such as weather information from the information center 32. In the present embodiment, in order to predict the amount of power generated by the solar power generation device 12, the HEMS 30 acquires weather information from the information center 32, and the solar power generation device 12 generates power using the acquired weather information. Predict the amount of power.

  The information center 32 can communicate with the portable terminal 34 and the like, and information such as the power supply status controlled by the HEMS 30 is transmitted to the portable terminal 34 via the information center 32, so that the information center 32 can be accessed from the outside. It is possible to check the power supply status.

  FIG. 2 is a block diagram showing a schematic configuration of the HEMS 30 included in the home energy management system 10 according to the embodiment of the present invention.

  As shown in FIG. 2, the HEMS 30 includes a CPU 36, a ROM 38, a RAM 40, and an input / output port 42. These include a bus 44 such as an address bus, a data bus, and a control bus. Are connected to each other.

  A display unit 46, an operation unit 48, and a memory 50 are connected to the input / output port 42 as various input / output devices. The display unit 46 and the operation unit 48 are integrally configured, and a touch panel provided on the display unit 46 can be applied to the operation unit 48.

  The memory 50 includes a program for controlling power supply to the house, a program for controlling various devices (the home appliance 20, the housing equipment 22, the gas using device 56, the water using device 58, etc.), and the like. Various information for executing the program is stored, and the program stored in the memory 50 is expanded in the RAM 40 and executed by the CPU 36, thereby controlling the supply of electric power supplied to the house and other various types. It comes to perform control.

  Further, the input / output port 42 is connected to a storage battery monitoring sensor 54 and a distribution board 14 for detecting the remaining amount and abnormality of the storage battery 24.

  The storage battery monitoring sensor 54 includes, for example, a temperature sensor provided for each cell of the storage battery 24. When the HEMS 30 acquires a temperature detected by the temperature sensor and is a temperature equal to or higher than a predetermined value, an abnormality occurs in the storage battery 24. It can be determined that Moreover, as an example other than the temperature sensor, it is possible to provide a current sensor, a voltage sensor, and the like. The HEMS 30 can determine an abnormality of the storage battery 24 based on the detected current value and voltage value, It is possible to detect the remaining amount of the storage battery 24 from the voltage.

  The distribution board 14 has a function of switching the power supplied to the house, and the HEMS 30 can switch the type of power supplied by controlling the distribution board 14.

  The information center 32 is connected to the input / output port 42 via a network 52 such as the Internet, and information is exchanged with the information center 32 via the network 52.

  By the way, the demand for electric power changes depending on the presence or absence of a resident of the building, and the electric power can be economically supplied by controlling the supply of electric power in consideration of the resident's schedule. Therefore, in the present embodiment, it is possible to input the resident's schedule by operating the operation unit 48 of the HEMS 30, and the HEMS 30 determines the presence / absence based on the input schedule, The power supply is controlled according to the presence / absence.

  When inputting a resident's schedule, a predetermined schedule input screen can be displayed on the display unit 46 and the operation unit 48 can be operated to input the schedule. For example, the schedule can be input in units of 24 hours and year / month / day. FIG. 3A is a diagram illustrating an example of a schedule input screen, and FIG. 3B is a diagram illustrating an example of a schedule table.

  The example of the schedule input screen in FIG. 3A shows an example in which travel, commuting, visitor, business trip, and others can be input as schedule items as schedules. In this example, for travel, enter the absence period, for commuting, enter the day of the week and time to work, for visitors, enter the date and number of visitors, and for business trips An example is shown in which a business trip period is input, and in other cases, an absence period is input.

  When a schedule is input via the schedule input screen, the input schedules can be collectively displayed on the display unit 46 as a schedule table screen as shown in FIG.

  Then, based on the schedule input using the schedule input screen, the HEMS 30 determines the presence / absence of the resident and controls the supply of electric power according to the presence / absence.

  Specifically, in the absence, the power load in the absence is significantly reduced, so the power generated by the solar power generation device 12 is actively sold, and the power generation by the solar power generation device 12 on the day of return or the previous day. While controlling the electric power to charge the storage battery 24, by stopping various devices such as the home appliance 20, the housing equipment 22, the gas using device 56, the water using device 58 during the absence period, the electric power, gas, If there is something that can be stopped by a lifeline such as water supply, each device is controlled to stop the supply. In the case of an all-electric house, if there is something that can be stopped by a lifeline such as electric power or water, each device is controlled to stop the supply. In addition, when power supply to the home appliance 20 or the residential equipment 22 is stopped, power supply to a predetermined circuit (for example, a predetermined circuit connected to a device capable of stopping power supply) is performed. It is preferable to supply power to a circuit (for example, a circuit to which a refrigerator or the like is connected) where it is not preferable to stop and stop power supply.

  In the case of being at home, the weather information is acquired from the information center 32, the power generated by the solar power generation device 12 is predicted, and the power usage status in the home for a predetermined period (for example, one week) is monitored. The device operation schedule is calculated to control the power supply to each device. For example, the device operation schedule is calculated by calculating the power supply schedule so that the generated power of the solar power generation device 12 is preferentially used. However, if the purchased power unit price and the unit price for selling the generated power of the solar power generation device 12 are acquired from the information center 32 and there is a large difference between the two unit prices and the unit price for sale is higher, May be prioritized.

  Further, when there is a visitor, it is expected that the power load on the visitor day will be higher than when there is no visitor. It controls so that it may charge, and on the day of a visitor, it controls electric power supply so that the generated electric power of the solar power generation device 12 may be used actively. However, in this case as well, when the unit sales price is higher, power sale may be given priority. Note that the charge amount of the storage battery 24 may be changed based on the number of visitors. For example, the charge amount to be charged in the storage battery 24 may be changed according to the number of visitors, such as 30% charge for one person and 40% charge for two persons. Alternatively, the time to start charging the storage battery 24 on the previous day may be changed according to the number of visitors.

  Further, when going to a business trip using a vehicle or returning from a business trip, it is expected that the amount of charging power of the vehicle storage battery 28 will increase. Control is made to suppress the sale of the generated power of the device 12 and charge the storage battery 24, and on the day, the power supply is controlled so as to actively use the generated power of the solar power generation device 12. In this case, since the power load is increased in the same manner as during the visitor due to an increase in the amount of electric power charged to the vehicle, the visitor portion may be replaced with a business trip, and the control may be the same. For example, in terms of software, control other than displaying and selecting “business trip” and “visitor” on the display screen may be the same. Alternatively, although the triggers for selecting “business trip” and “visitor” are different, the subsequent control may be the same. This makes it possible to share a program and the like, thereby reducing development and creation costs.

  Subsequently, specific processing performed in the HEMS 30 of the home energy management system 10 according to the embodiment of the present invention configured as described above will be described.

  First, a schedule input process performed when a schedule is input using the operation unit 48 of the HEMS 30 will be described. FIG. 4 is a flowchart showing an example of a schedule input process performed in the HEMS 30 of the home energy management system 10 according to the embodiment of the present invention.

  In step 100, a predetermined initial screen (home screen) is displayed on the display unit 46, and the process proceeds to step 102. As the home screen, for example, a display button or the like for inputting a schedule or other instructions may be displayed, or the current power generation status of the solar power generation device 12 or the power supply status may be displayed. Good.

  In step 102, it is determined whether the operation unit 48 has been operated to instruct a schedule input. If the determination is negative, the process ends and other processes are performed, and the determination is affirmed. In step S104, the process proceeds to step 104.

  In step 104, the schedule input screen is displayed on the display unit 46, and the process proceeds to step 106. That is, the schedule input screen shown in FIG. Accordingly, it is possible to input a schedule by operating the operation unit 48 on the schedule input screen displayed on the display unit 46.

  In step 106, display processing corresponding to the operation of the operation unit 48 is performed, and the process proceeds to step 108. That is, on the schedule input screen displayed on the display unit 46, the display on the display unit 46 is performed according to the schedule set by operating the operation unit 48. For example, when a travel absence period is selected on the schedule input screen in FIG. 3A, the period is displayed according to the selection. In the case of FIG. 3A, a month and a day can be selected by performing an operation of selecting “▲” or “▼” in the absence period.

  In step 108, it is determined whether display of the home screen has been instructed. The determination is made, for example, by determining whether or not an instruction to select “home” shown in FIG. 3A has been given by the operation unit 48. If the determination is affirmative, the process returns to step 100 and is described above. If the process is repeated and the determination is negative, the routine proceeds to step 110.

  In step 110, it is determined whether or not a schedule registration is instructed. This determination is performed by determining whether or not an instruction for selecting “registration” shown in FIG. 3A has been given by the operation unit 48 when a schedule is input. Returning to 106, the above-described processing is repeated, and if the determination is affirmative, the routine proceeds to step 112.

  In step 112, a schedule table reflecting the registered schedule is displayed on the display unit 46, and the process proceeds to step 114. That is, a schedule as shown in FIG. 3B is displayed on the display unit 46.

  In step 114, it is determined whether or not a schedule registration is instructed. The determination is made, for example, by determining whether or not an instruction for selecting “schedule registration” on the schedule screen shown in FIG. 3B has been given by the operation unit 48. If the determination is affirmative, step 104 is performed. Returning to, the above process is repeated, and if the determination is negative, the routine proceeds to step 116.

  In step 116, it is determined whether or not a schedule cancellation is instructed. In the determination, for example, an instruction to select one of the schedules displayed on the schedule screen shown in FIG. 3B is given by the operation unit 48, and an instruction to select “schedule cancellation” is given. If the determination is affirmative, the process proceeds to step 118. If the determination is negative, the process proceeds to step 120.

  In step 118, the schedule corresponding to the schedule cancellation is canceled and the schedule is displayed, and the process proceeds to step 120.

  In step 120, it is determined whether an instruction to display the home screen has been issued. The determination is made, for example, by determining whether or not an instruction to select “home” shown in FIG. 3B has been given by the operation unit 48. If the determination is affirmative, the process returns to step 100 and is described above. If the process is repeated and the determination is negative, the routine proceeds to step 122.

  In step 122, it is determined whether or not an instruction to perform other processing has been performed by the operation unit 48. If the determination is negative, the processing returns to step 100 and the above processing is performed, and the determination is affirmed. In such a case, the scheduled input process of the example is terminated and another process instructed is performed.

  By executing the schedule input process as described above, it is possible to input a schedule by operating the operation unit 48 of the HEMS 30, and it is possible to execute power supply control described later based on the input schedule.

  Next, power supply control performed in the HEMS 30 performed according to the schedule input in the schedule input process will be described. FIG. 5 is a flowchart showing an example of the flow of power supply control performed in the HEMS 30 of the home energy management system 10 according to the embodiment of the present invention.

  In step 200, a power supply plan is calculated based on the schedule input in the schedule input process, and the process proceeds to step 202. For example, based on a schedule shown in FIG. 3B, a period such as a date and time when power supply is stopped is determined from an absent period.

  In step 202, the amount of power generation is predicted based on the weather, and the power supply is started according to the average power usage status for one week, and the process proceeds to step 204. That is, the weather information is acquired from the information center 32 to predict the power generation amount of the solar power generation device 12, and the average power consumption for the past week is monitored, the operation schedule of each device is calculated, and the power supply is performed. Do. For example, during a time period when the solar power generation device 12 generates power, the power generated by the solar power generation device 12 is supplied to each device to charge surplus power to the storage battery 24, or the vehicle storage battery 28 is charged. To do. When the power sale unit price is higher than the power purchase unit price, control is performed so that power sale is prioritized.

  In step 204, it is determined whether or not the scheduled date and time are absent. The determination determines whether or not the absence date / time of the schedule input in the schedule input process has been reached. If the determination is affirmative, the process proceeds to step 206. If the determination is negative, the process proceeds to step 214. .

  In step 206, the power generation priority of the solar power generation device 12 is set to power sale priority, and the process proceeds to step 208. That is, in the absence, it is useless to supply the generated power of the solar power generation device 12 to each device. Therefore, by giving priority to power sale, a predetermined part of the building (for example, power supply can be stopped The load of the grid power 18 can be leveled while stopping unnecessary power consumption by stopping power supply to a predetermined circuit or the like. Note that when the power purchase unit price is higher than the power sale unit price, priority may be given to charging the storage battery 24 without selling power. In this case, control may be performed so that the vehicle storage battery 28 is charged when the storage battery 24 is fully charged, and the vehicle storage battery 28 is also sold when the storage battery 28 is also fully charged.

  In step 208, the operation of at least one of the gas using device 56 and the water using device 58 is stopped, and the process proceeds to step 210. That is, in this embodiment, the operation is stopped by stopping the power supply to the gas use device 56 and / or the water use device 58 (at least one of the gas use device 56 and the water use device 58), and the gas or water supply is stopped. Useless use can be eliminated. When at least one of the gas use device 56 and the water use device 58 is connected to the HEMS 30 and the operation can be controlled by the HEMS 30, at least one of the gas use device 56 and the water use device 58 is controlled by the HEMS 30. You may make it control so that operation | movement may be stopped. Further, in the case of an all-electric house, since there is no gas using device 56, the operation of the water use device 58 may be stopped so as to eliminate useless use of water. Further, in addition to stopping at least one of the gas use device 56 and the water use device 58, a device for opening and closing at least one of the main plugs of gas and water supply is provided. The lifeline may be stopped by controlling at least one of the device 56 and the water usage device 58. Alternatively, instead of stopping the gas use device 56 and the water use device 58, at least one of a gas switch device and a water switch device that opens and closes a gas and water main plug is provided and closed (for example, the main plug is closed). Alternatively, the lifeline may be selectively stopped by including at least one of a gas tap opening / closing device, a water tap opening / closing device, a gas using device 56, and a water using device 58. In addition, when closing a gas tap opening / closing device and a water tap opening / closing device, it is good also as a structure which electrically connects a main plug and closes electrically. In addition, the main plug may be a main plug in a building, or a single plug used together with a main plug that can be manually closed. The electrical connection may be monitored by the HEMS 30.

  In step 210, it is determined whether or not a predetermined time before the return home time is reached, and the process waits until the determination is affirmed and proceeds to step 212. The predetermined time may be, for example, a predetermined time necessary for charging the storage battery 24, or may be a predetermined time according to the remaining amount of the storage battery 24.

  In step 212, charging of the storage battery 24 is started with the generated power of the solar power generation device 12, and the process proceeds to step 222. That is, by charging the storage battery 24, the generated power stored after returning home can be used, and economical power can be used. When the generated power of the solar power generation device 12 is insufficient, the power of the vehicle storage battery 28 may be used, the system power may be used, or other green power may be used. It may be.

  On the other hand, in step 214, it is determined whether or not it is a scheduled visit date. The determination is made as to whether or not the day before the scheduled visit date of the schedule input in the schedule input process is reached. If the determination is affirmative, the process proceeds to step 216, and if the determination is negative, the process proceeds to step 218. Transition.

  In step 216, control is performed so that power storage is suppressed and the storage battery 24 is charged with the generated power of the solar power generation device 12, and the process proceeds to step 222. In other words, since there is a possibility that power consumption increases at the time of the visitor, the power stored in the storage battery 24 is suppressed on the day before the scheduled visit date, and the generated power is stored in the storage battery 24. Power can be used.

  In step 218, it is determined whether or not the visitor date, the business trip date, or the home trip from the business trip. The determination is based on the schedule entered in the schedule input process, and the visitor date, the business trip date, or the return from the business trip is determined. If the determination is affirmative, the process proceeds to step 220; The process moves to 222.

  In step 220, the generated power of the solar power generation device 12 (generated power including the generated power stored in the storage battery 24) is converted into each device (home appliance 20, residential device 22, gas using device 56, water using device 58, etc.). Is controlled so as to be supplied with priority, and the process proceeds to step 222. That is, at the time of visitor, business trip, or homecoming business trip, economical power is used without using power from the grid power by preferentially using the generated power including the generated power stored in the storage battery 24. be able to.

  In step 222, it is determined whether or not a schedule change or addition instruction has been performed by the operation unit 48. If the determination is affirmative, the process returns to step 200 and the above-described processing is repeated, and the determination is denied. If so, the process proceeds to step 224.

  In step 224, it is determined whether or not an instruction to stop the control based on the schedule has been given by the operation unit 48. If the determination is negative, the process returns to step 204 and the above processing is repeated, and the determination is affirmative. If so, the series of processing ends.

  In the above embodiment, the schedule input by the operation unit 48 of the HEMS 30 is not limited to travel, commuting, visitor, business trip, and others, and other schedules may be input.

10 Home Energy Management System 12 Photovoltaic Generator 14 Distribution Panel 16 Green Power 18 System Power 24 Storage Battery 30 HEMS
46 Display Unit 48 Operation Unit 56 Gas Use Equipment 58 Water Use Equipment

Claims (6)

Power generation means for generating power using natural energy;
A storage battery for storing the power used in the building;
An input means for inputting the schedule of the building occupant;
Control to supply at least one of system power, stored power of the storage battery and generated power of the power generation means to the building, and determine the presence or absence of a resident based on the input result of the input means Control means for controlling the supply destination of the generated power so as to start charging the storage battery with the generated power of the power generating means before a predetermined period of time after being absent;
Home energy management system with.   2. The home energy management system according to claim 1, wherein the control unit further controls the power generation unit so that a ratio of selling the generated power is higher when the resident is absent than when the resident is present. .   When the resident is absent, the control means stops power supply to a predetermined part of the building, closes a gas plug opening / closing device that opens and closes the gas plug, and supplies power to a gas using device that uses gas. The home according to claim 1 or 2, further controlled to perform any one of stopping, closing of a water tap opening / closing device that opens and closes the water tap, or stopping power supply to a water supply using device that uses water. Energy management system.   When the schedule input by the input means is a visitor schedule, the control means uses the generated power of the power generation means from a predetermined period before the resident is at home and before the scheduled visitor time or scheduled visitor date. The home energy management system of any one of Claims 1-3 which further controls the supply destination of the said generated electric power so that charge of a storage battery may be started.   5. The home energy management system according to claim 4, wherein the control unit further performs control so that the generated power can be consumed more than a predetermined normal time at the scheduled visit time or scheduled visit date.   When the schedule input by the input means is a business trip, the control means starts charging the storage battery with the generated power of the power generation means before a predetermined time of the business trip schedule or after returning home from the business trip. The home energy management system of any one of Claims 1-5 which further controls the supply destination of generated electric power.

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