WO2017009912A1

WO2017009912A1 - Energy management device, energy management method, and program

Info

Publication number: WO2017009912A1
Application number: PCT/JP2015/069965
Authority: WO
Inventors: 雄喜小川; 矢部　正明; 一郎丸山; 聡司峯澤
Original assignee: 三菱電機株式会社
Priority date: 2015-07-10
Filing date: 2015-07-10
Publication date: 2017-01-19
Also published as: JPWO2017009912A1; JP6490218B2

Abstract

Provided is an energy management device (100) for controlling a hot-water-storage-type hot water supply system and an air conditioning device, wherein an information acquisition unit (521) acquires a first operation schedule of the hot-water-storage-type hot water supply system, and a second operation schedule of an air conditioning system for performing air conditioning within a building using cold exhaust heat from the hot-water-storage-type hot water supply system. An action control unit (523) controls the action of the hot-water-storage-type hot water supply system, on the basis of the second operation schedule, by using a third operation schedule in which the first operation schedule is changed so as to reduce the amount of power consumed by the air conditioning system.

Description

Energy management apparatus, energy management method, and program

The present invention relates to an energy management apparatus, an energy management method, and a program capable of enhancing the energy saving effect by linking hot water supply equipment and air conditioning equipment.

There is a hot water supply facility that heats water with a heat pump, stores it in a hot water storage tank, adjusts the heated water to a target temperature, and supplies it to the building as needed. There is also an air conditioner that cools or heats the air inside or outside the building and then sends the air into the building.

Furthermore, there are facilities that combine hot water supply facilities and air conditioning facilities. For example, Patent Document 1 discloses a hot water supply unit that performs air conditioning using cold exhaust heat from a heat pump.

Further, in Patent Document 2, in a heat pump apparatus capable of performing hot water supply and air conditioning at the same time, if the cooling is in operation and hot water is insufficient, all exhaust heat of the indoor unit is recovered by the hot water supply unit. Although the operation mode is set, it is disclosed that the operation mode can be invalidated when the electricity rate is high.

JP 2002-89883 A International Publication No. 2012/101804

However, conventionally, the operation schedule of the hot water supply facility and the operation schedule of the air conditioning facility have not been linked. For this reason, when the operation schedule of the hot water supply facility and the operation schedule of the air conditioning facility are set separately, the hot water supply facility and the air conditioning facility are not linked, and the energy saving performance of the system may not be fully exhibited.

The present invention has been made under the above circumstances, and provides an energy management device, an energy management method, and a program capable of enhancing the effect of energy saving by linking hot water supply equipment and air conditioning equipment. Objective.

In order to achieve the above object, an energy management device according to the present invention provides:
An energy management device that controls a hot water storage hot water supply facility and an air conditioning facility that performs air conditioning in a building using cold exhaust heat from the hot water storage hot water facility,
An information acquisition unit for acquiring a first operation schedule of the hot water storage type hot water supply facility and a second operation schedule of the air conditioning facility;
An operation control unit for controlling the operation of the hot water storage type hot water supply facility according to a third operation schedule that is changed from the first operation schedule so as to reduce power consumption by the air conditioning facility based on the second operation schedule;
Is provided.

Energy saving effect can be enhanced by linking hot water supply equipment and air conditioning equipment.

It is a figure which shows the structure of an energy management system. It is a figure which shows the structure of a hot water supply equipment. It is a figure which shows the structure of an air conditioning facility. It is a figure showing other composition of air-conditioning equipment. It is a figure which shows the structure of a HEMS controller. It is a figure which shows the structure of a user terminal. It is a flowchart for demonstrating an energy management process. It is a figure which shows the example of a display of a user schedule. It is a figure which shows the structure of user schedule data. It is a figure which shows the structure of the operation schedule data of a hot water supply equipment. It is a figure which shows the structure of the operation schedule data of an air conditioner. It is a figure which shows the example of the electric power purchase price, the operation schedule of a hot-water supply equipment, and the operation schedule of an air conditioning equipment. It is a figure for demonstrating the process which changes the driving schedule of a hot water supply equipment. It is a figure which shows the relationship between the capability of an outdoor unit, and the temperature of cold waste heat, and the relationship between the capability of an outdoor unit and power consumption. It is a figure for demonstrating the process which changes the driving schedule of a hot water supply equipment. It is a figure for demonstrating the process which changes the driving schedule of a hot water supply equipment. It is a figure which shows the structure of the energy management system in the modification 1. It is a figure which shows the structure of the HEMS controller in the modification 2.

FIG. 1 shows an outline of the configuration of the energy management system 1 in the present embodiment.

A HEMS (Home Energy Management System) controller 100 controls the operation of the hot water supply facility 20, the air conditioning facility 30, and the electrical device 70. For example, the HEMS controller 100 switches the operation (ON) and non-operation (OFF) of the hot water supply facility 20, the air conditioning facility 30, and the electric device 70 based on the user schedule input by the user, or the hot water supply facility 20 and the air conditioning. The operation mode of the facility 30 and the electric device 70 is changed and operated. The HEMS controller 100 is also referred to as an energy management device.

In addition, the HEMS controller 100 indicates the amount of power consumed by the electric device 70 or the like measured by the electric device 70 or a power measuring device (not shown), the amount of power stored by the power storage facility 60, the amount of power generated by the power generation facility 50, and the like. Acquire and save data. The HEMS controller 100 stores a history of performance data.

Then, the HEMS controller 100 transmits the acquired result data to the server 90 connected to the communication network 80. The server 90 receives the result data from the HEMS controller 100 and stores it. The server 90 stores the history of performance data.

Furthermore, the HEMS controller 100 acquires meteorological data indicating temperature, humidity, and the like from the server 90 or a computer (not shown) on the communication network 80, and based on the acquired meteorological data and operation data, the hot water supply facility 20 The future power consumption by the air conditioning facility 30 and the electric device 70 is estimated, and the operation schedule of the hot water supply facility 20, the air conditioning facility 30, and the electric device 70 is created.

The hot water supply facility 20 heats city water with a heat pump and discharges hot water to a bathtub in the building. Moreover, the hot water supply facility 20 discharges the cold exhaust heat generated when the city water is heated by the heat pump to a duct that leads to the air conditioning facility 30. The hot water supply facility 20 in the present embodiment is a hot water storage type.

The air conditioner 30 performs air conditioning such as heating, cooling, and blowing in the building. The air conditioning equipment 30 cools the air in the building using the cold exhaust heat from the hot water supply equipment 20.

The user terminal 40 displays a screen showing the operating state of the energy management system 1. The user terminal 40 receives an input for instructing operations of the hot water supply facility 20, the air conditioning facility 30, and the electric device 70 from the user, and controls the hot water supply facility 20, the air conditioning facility 30, and the electric device 70 based on the received instruction.

The power generation facility 50 performs solar power generation and supplies the generated power to the residential power line or the power storage facility 60. The power generation method may not be solar power generation.

The power storage facility 60 stores power supplied from a commercial power source or power generated by the power generation facility 50.

The electrical device 70 is connected to a home power line and operates by receiving power from at least one of a commercial power source, a power generation facility 50, and a power storage facility 60. Specifically, the electric device 70 is an air conditioner, an electric cooker, a television receiver, a ventilation facility, a lighting facility, a floor heating facility, or the like. However, the type of the electric device 70 is not limited to these, and may be any device that operates by electricity and can be controlled by the HEMS controller 100.

The communication network 80 connects the HEMS controller 100 and the server 90 so that they can communicate with each other. Typically, the communication network 80 is the Internet.

The server 90 acquires the actual data from the HEMS controller 100 and stores it.

Next, the details of the hot water supply facility 20 will be described. In FIG. 2, the structure of the hot water supply equipment 20 is shown.

The outdoor unit 210 performs heat exchange with a heat pump using, for example, CO ₂ (carbon dioxide) or HFC (hydrofluorocarbon) as a refrigerant. The outdoor unit 210 stores the refrigerant in a pressurized state by the accumulator 212, increases the temperature of the refrigerant by compressing the refrigerant by the compressor 213, and cools the heated refrigerant by using the radiator 211. Heat the city water to the target temperature by exchanging heat with it. The heated city water is stored in the hot water storage tank 201. The outdoor unit 210 can reheat the water stored in the hot water storage tank 201.

The hot water storage tank 201 stores city water heated by the outdoor unit 210. The hot water storage tank 201 is made of a metal such as stainless steel or a resin. A heat insulating material is applied to the outside of the hot water storage tank 201. There may be a plurality of hot water storage tanks 201 instead of only one.

The hot water supply controller 202 controls the entire hot water supply facility 20. The hot water supply controller 202 creates an operation schedule based on the user schedule input by the user, stores hot water in the hot water storage tank 201 according to the operation schedule, and mixes the hot water with room temperature city water so that the target temperature is reached. Control the hot water in the bathtub. Note that the hot water supply controller 202 may be provided not in the hot water storage tank 201 but in the outdoor unit 210 or the HEMS controller 100.

In addition, the outdoor unit 210 thermally expands the heat exchanged refrigerant by the expansion valve 214, causes the air heat exchanger 216 to exchange heat with the outside air, and cools the refrigerant by the fan 215. The switching device 220 discharges the cold exhaust heat to the indoor unit through the duct 231. The indoor unit cools the air in the building 230 using this cold exhaust heat. Alternatively, when the air conditioning is stopped, the switching device 220 discharges the cold exhaust heat to the outside.

Next, the details of the air conditioning equipment 30 will be described. FIG. 3 shows a configuration of an air conditioning facility 30 of the entire building air conditioning type. In the entire building air conditioning type, cold exhaust heat or outside air from the hot water supply facility 20 is transferred to one indoor unit 300 through the duct 231B, and cooled air or warmed air is transferred from the indoor unit 300 to each room through the duct 231A. The

The heat exchanger of the indoor unit 300 exchanges heat with the surrounding air by passing the refrigerant through the pipe, and cools or heats the refrigerant. During the cooling operation, the heat exchanger functions as an evaporator and evaporates the refrigerant that has flowed in. Thereby, the heat exchanger absorbs heat from the surrounding air and cools the surrounding air. Further, during the heating operation, the heat exchanger functions as a condenser and condenses the inflowing gaseous refrigerant. As a result, the heat exchanger releases heat to the surrounding air and heats the surrounding air.

The damper of the duct 231A adjusts the air volume of the air to be conveyed and switches between air conveyance and stop.

The duct 231B conveys cold exhaust heat from the hot water supply facility 20 to the indoor unit 300 during cooling. Since the temperature of the air conveyed to the indoor unit 300 is low, there is an effect that the efficiency of cooling by the air conditioning equipment 30 is increased and the load of air conditioning can be reduced.

FIG. 4 shows the configuration of the total heat exchange type air conditioning equipment 30. In the total heat exchange type, when the air (inside air) RA and the outside air OA in the building 230 pass through the heat exchanger 400, the temperature and humidity are exchanged. During cooling, the cold exhaust heat from the hot water supply facility 20 becomes the outside air OA.

After the outside air OA exchanges heat with the inside air RA, the cooled inside air SA is discharged into the building 230, and the warmed outside air EA is discharged out of the building 230.

In this embodiment, the air conditioning equipment 30 is a whole building air conditioning type, but may be a total heat exchange type.

In addition, you may make it discharge | emit the cold exhaust heat from the hot water supply equipment 20 to the inlet port of a general ventilation equipment.

Next, details of the HEMS controller 100 will be described. FIG. 5 shows the configuration of the HEMS controller 100.

The communication unit 501 includes a NIC (Network Interface Card), a hot water supply facility 20, an air conditioning facility 30, a user terminal 40, and an electrical device 70 via a communication line installed in the building 230 or by wireless communication. connect. The communication unit 501 communicates with the server 90 via the communication network 80.

The image processing unit 502 generates screen data and displays various screens on the display 551 such as a screen showing a current operation state of the energy management system 1 and a screen for receiving an instruction from the user.

The audio processing unit 503 acquires audio data from the storage unit 505, reproduces it, and outputs audio from the speaker 552.

The input unit 504 includes an input device that receives input from the user, such as a button or a touch panel.

The storage unit 505 includes a storage device such as a hard disk, and includes various programs for controlling the HEMS controller 100, power consumption obtained from the electric device 70 and the like, actual data indicating the operating state of the electric device 70, and an operating system (OS). Image data, audio data, text data, etc. are stored.

The control unit 506 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory), and controls the HEMS controller 100 as a whole.

The information acquisition unit 521 acquires various information such as performance data from the hot water supply facility 20, the air conditioning facility 30, the user terminal 40, the power generation facility 50, the power storage facility 60, the electrical device 70, and the server 90, and stores it in the storage unit 505. Remember.

More specifically, the information acquisition unit 521 acquires performance data indicating the operating state of the hot water supply facility 20, the amount of stored hot water, the amount of power consumption, and the like from the hot water supply facility 20 and stores it in the storage unit 505.

In addition, the information acquisition unit 521 air-conditions the performance data indicating the operation state of the air conditioning equipment 30, the set operation mode such as cooling and heating, the set target temperature, the measured temperature and humidity, the power consumption, and the like. Obtained from the facility 30 and stored in the storage unit 505.

Also, the information acquisition unit 521 acquires user schedule data indicating the user schedule input from the user using the user terminal 40 from the user terminal 40 and stores it in the storage unit 505. The user schedule may be input using the input unit 504 of the HEMS controller 100 as well as the user terminal 40.

In addition, the information acquisition unit 521 acquires the performance data indicating the operation state of the power generation facility 50, the amount of power generation, the time of power generation, and the like from the power generation facility 50 and stores them in the storage unit 505.

In addition, the information acquisition unit 521 acquires the performance data indicating the operation state of the power storage facility 60, the amount of power storage, the time when the power is stored, and the like from the power storage facility 60, and stores them in the storage unit 505.

In addition, the information acquisition unit 521 acquires performance data indicating the operating state, power consumption, and the like of the electric device 70 from the electric device 70 and stores it in the storage unit 505.

In addition, the information acquisition unit 521 receives the meteorological data indicating the current weather, temperature, humidity, etc., and the meteorological data indicating the future (for example, tomorrow) weather, temperature, humidity, etc. from the server 90 or a public institution or private weather company. Is acquired from a server (not shown) managed by and stored in the storage unit 505. Further, the information acquisition unit 521 acquires charge data indicating the power purchase price and the power sale price from the server 90 or a server (not shown) managed by the electric retailer and stores the data in the storage unit 505.

The operation planning unit 522 creates an operation schedule for the hot water supply facility 20 and an operation schedule for the air conditioning facility 30 based on the acquired actual data, user schedule data, weather data, and fee data, and stores them in the storage unit 505. Remember. In addition, although the operation schedule of the hot water supply equipment 20 may be changed based on the operation schedule of the air conditioning equipment 30, the details will be described later.

In the following description, the operation schedule of the hot water supply facility 20 is referred to as “first operation schedule”, the operation schedule of the air conditioning facility 30 is referred to as “second operation schedule”, and the first operation schedule is based on the second operation schedule. The operation schedule in which is changed is referred to as a “third operation schedule”.

The operation control unit 523 controls the operations of the hot water supply equipment 20 and the air conditioning equipment 30 based on the created operation schedule. Further, the operation control unit 523 controls not only the hot water supply equipment 20 and the air conditioning equipment 30 but also the operations of the power generation equipment 50, the power storage equipment 60, and the electric equipment 70.

Note that the operation control unit 523 also creates an operation schedule for the power generation facility 50, the power storage facility 60, and the electrical device 70 based on the actual data, the user schedule data, the weather data, and the charge data. The operation may be controlled based on this. In addition, the operation control unit 523 can also control the operations of the hot water supply facility 20, the air conditioning facility 30, the power generation facility 50, the power storage facility 60, and the electric device 70 based on an instruction from the user regardless of the operation schedule. .

Next, details of the user terminal 40 will be described. FIG. 6 shows the configuration of the user terminal 40.

The communication unit 601 includes a NIC and communicates with the HEMS controller 100.

The image processing unit 602 generates screen data constituting a screen to be displayed on the display 651 and displays various screens on the display 651.

The audio processing unit 603 acquires audio data from the storage unit 606, reproduces it, and outputs audio from the speaker 652.

The I / O unit 604 includes an interface such as a USB (Universal Serial Bus) and connects a memory card, an external hard disk, and the like to the user terminal 40.

The input unit 605 includes an input device that receives an instruction from the user, such as a button or a touch panel.

The storage unit 606 includes a storage device such as a hard disk, and stores various programs for controlling the user terminal 40, OS, image data, audio data, text data, and the like.

The control unit 607 includes a CPU, a ROM, and a RAM, and controls the entire user terminal 40.

Specifically, the user terminal 40 is, for example, a tablet personal computer, a smartphone, a mobile phone, or the like.

Next, energy management processing performed by the HEMS controller 100 will be described. The HEMS controller 100 efficiently operates the hot water supply facility 20 and the air conditioning facility 30 in cooperation with each other. For example, the HEMS controller 100 links the hot water supply facility 20 and the air conditioning facility 30 so as to reduce the amount of power consumed by the air conditioning facility 30. FIG. 7 shows a flowchart for explaining the energy management process.

In the energy management process shown in FIG. 7, the third operation schedule described above is set. The energy management process starts, for example, at a preset time on the previous day when the HEMS controller 100 controls the hot water supply facility 20 and the air conditioning facility 30. The energy management process may be started when the above-described second operation schedule is changed by the user, for example.

First, the control unit 506 of the HEMS controller 100 acquires charge data indicating the power purchase price and the power sale price from the server 90 or a computer (not shown) on the communication network 80 managed by the electric retailer (step). S701). The control unit 506 stores the acquired fee data in the storage unit 505.

However, the control unit 506 may acquire the charge data by a process different from the energy management process. The control unit 506 periodically acquires the latest charge data regardless of whether or not the energy management process is executed, such as a predetermined time every day or a predetermined date every month. Also good.

The control unit 506 acquires the operation schedule of the hot water supply facility 20 and the operation schedule of the air conditioning facility 30 from the storage unit 505 (step S702).

Here, the operation schedule is explained. For example, the control unit 506 displays a schedule screen illustrated in FIG. 8 on the display 551, and receives an input of a user schedule including a schedule content, a schedule start time, and a schedule end time from the user. FIG. 8 shows a user schedule for one week from the current time (for example, 00:00:00 on April 1, 2015) when the schedule screen is displayed.

The user operates the input unit 504 or operates an input device included in the user terminal 40 to input the user schedule, that is, the schedule content, the schedule start time, and the schedule end time. In this embodiment, a user schedule can be input for each user. In addition, the energy management system 1 in which the user does not designate a user such as a user schedule associated with all users registered in advance in the HEMS controller 100 (for example, the whole family), and on / off of the operation of the electric device 70. You can enter a schedule. Here, the schedule of the energy management system 1 that does not particularly designate a user is also referred to as a user schedule for convenience.

The control unit 506 creates a first operation schedule of the hot water supply facility 20 and a second operation schedule of the air conditioning facility 30 based on the input user schedule, and an operation schedule indicating the created first operation schedule and second operation schedule. Data is stored in the storage unit 505.

For example, when a user schedule “going to travel with the whole family from 13:00 on April 3, 2015 to 15:00 on April 5, 2015” is input, the control unit 506 is the start time 2015. At 12:00 on April 3, 2015, boiling by the hot water supply equipment 20 was stopped, and the end time of April 5, 2015, 15:00, or a predetermined time before this end time (for example, 2015 Operation schedule data for starting boiling by the hot water supply equipment 20 at 14:00 on April 5) is created and stored in the storage unit 505.

FIG. 9 shows an example of user schedule data indicating the schedule input from the user, which is stored in the storage unit 505. The control unit 506 stores the schedule identification number (ID), the user associated with the schedule, the schedule contents, the schedule start time, and the schedule end time in the storage unit 505 in association with each other.

FIG. 10 shows an example of operation schedule data indicating the first operation schedule of the hot water supply facility 20 stored in the storage unit 505. Based on the user schedule stored in the storage unit 505, the control unit 506 performs the first operation of the hot water supply facility 20 in which the schedule identification number, the content of the control, and the time (scheduled time) for performing the control are associated with each other. A schedule is created and stored in the storage unit 505.

FIG. 11 shows an example of operation schedule data indicating the second operation schedule of the air conditioning equipment 30 stored in the storage unit 505. Based on the user schedule stored in the storage unit 505, the control unit 506 associates the schedule identification number, the content of the control, and the time (scheduled time) for performing the control with the second operation of the air conditioning equipment 30. A schedule is created and stored in the storage unit 505.

Note that the control unit 506 can also create each operation schedule regardless of the user schedule. That is, the control unit 506 determines the amount of power consumed by the electrical device 70 in the future (for example tomorrow) based on the weather data acquired from the computer on the communication network 80 managed by the server 90 or the electric retailer, and the power generation facility The power generation amount by 50 and the power storage amount by the power storage facility 60 are predicted. And the control part 506 produces each future operation schedule of the electric equipment 70, the power generation equipment 50, and the electrical storage equipment 60 based on each predicted value of power consumption, electric power generation, and electrical storage.

Returning to the flowchart of FIG. 7, the control unit 506 determines whether or not the cooling schedule is included in the acquired second operation schedule of the air conditioning equipment 30 (step S <b> 703). In the present embodiment, the control unit 506 determines whether or not the second driving schedule for the next day is scheduled to be operated by cooling.

For example, in the second operation schedule shown in FIG. 11, there is a schedule for cooling operation from the time corresponding to the schedule indicated by the identification number B01 to the time corresponding to the schedule indicated by the identification number B02.

When it is determined that the cooling schedule is included in the second operation schedule of the air conditioning equipment 30 (step S703; YES), the control unit 506 uses the hot water supply at the scheduled time T1 when the cooling is started. It is determined whether or not it is before the scheduled time T2 (step S704). On the other hand, when it is determined that the cooling schedule is not included in the second operation schedule of the air conditioning equipment 30 (step S703; NO), the energy management process is terminated.

For example, when the first operation schedule of the hot water supply facility 20 is stored as shown in FIG. 10 and the second operation schedule of the air conditioning facility 30 is stored as shown in FIG. 11, the schedule with the identification number B01 is stored. The scheduled time T2 (April 1, 2015 10:00) for starting the cooling corresponding to is scheduled to start the hot water supply corresponding to the schedule of the identification number A03 (April 1, 2015 12:30) ) Before.

In consideration of the time lag from the time when the HEMS controller 100 instructs the hot water supply facility 20 to start boiling to the time when the hot water supply is actually started, the control unit 506 sets the boiling start time of the hot water supply facility 20 to the user schedule. It is also possible to set a time that is a predetermined safety value earlier than the time specified by or the time calculated from the operation history of the hot water supply facility 20.

When the scheduled time T1 for starting the cooling is later than the scheduled time T2 for using the hot water supply (step S704; NO), the energy management process is terminated.

When the scheduled time T1 for starting the cooling is before the scheduled time T2 for using the hot water supply (step S704; YES), the control unit 506 is scheduled within the time for operating the cooling based on the charge data. It is determined whether or not a time zone lower than the power purchase price at the time of boiling by the hot water supply facility 20 is included (step S705).

For example, as illustrated in FIG. 12, when a power purchase price, a first operation schedule of the hot water supply facility 20, and a second operation schedule of the air conditioning facility 30 are set, the purchase at the time of boiling by the scheduled hot water supply facility 20 is performed. The electric power price PB ₃ is 10 yen / kWh, and the electric power purchase price PB ₂ (in the second section 1202 from 10:00 to 12:00 of the first section 1201 from 10:00 to 22:00 that is operated by cooling. 7 yen / kWh) is lower than the power purchase price PB ₃ (10 yen / kWh) at the time of boiling by the hot water supply facility 20 in the third section 1203 from 0:00 to 6:00. Therefore, the control unit 506 includes a time zone that is cheaper than the power purchase price at the time of boiling by the scheduled hot water supply facility 20 within the scheduled operation time for cooling (step S705; YES). Is determined.

In step S705, the control unit 506 considers the profit obtained by the user by reversing the power generated by the power generation facility 50 and selling the electric power to the electric retailer, and within the time of operating in cooling, It may be determined whether or not a time zone cheaper than the power purchase price at the time of boiling by the scheduled hot water supply facility 20 is included.

For example, in FIG. 12, the control unit 506 determines the amount ΔP ₂ obtained by subtracting the power sale price PS ₂ in the second section 1202 from the power purchase price PB _{2 in} the second section 1202 and the power purchase price PB ₃ in the third section 1203. Compared with the amount ΔP ₃ obtained by subtracting the power selling price PS ₃ in the third section 1203, if ΔP ₂ is smaller than ΔP ₃ , the scheduled hot water supply facility 20 is operated within the scheduled cooling time. It is determined that a time zone cheaper than the electricity purchase price at the time of boiling is included (step S705; YES). On the other hand, if ΔP ₂ is not smaller than ΔP ₃ , the control unit 506 has a time zone that is cheaper than the power purchase price at the time of boiling by the scheduled hot water supply facility 20 within the scheduled cooling time. It is determined that it is not included (step S705; NO).

When it is determined that a time zone cheaper than the electricity bill required for boiling by the scheduled hot water supply facility 20 is included in the operation time in the cooling (step S705; YES), the control unit 506 displays the hot water supply facility. The operation schedule of 20, more specifically, the schedule of boiling by the hot water supply facility 20 is changed (step S <b> 706). On the other hand, if it is determined that the time period during which the cooling operation is performed does not include a time zone cheaper than the power purchase price at the time of boiling by the scheduled hot water supply facility 20 (step S705; NO), the energy management process is performed. finish.

FIG. 13 is used to explain in detail the process of creating the third operation schedule by changing the first operation schedule based on the second operation schedule. The control unit 506 supplies the hot water supply facility 20 to the second section 1202 that is lower than the power purchase price for boiling by the scheduled hot water supply facility 20 during the scheduled time (for example, from 10:00 to 22:00) for cooling operation. Move part of the schedule for boiling by.

More specifically, the control unit 506 moves a part of the schedule in the time zone far from the time T2 when the hot water supply facility 20 is used, to the second section 1202 where the power purchase price is low, among the schedules for boiling.

That is, in FIG. 13, the control unit 506 is a section having a time length (in this case, two hours) corresponding to the second section 1202 in which the power purchase price is low in the third section 1203 for boiling. Thus, the schedule of the section 1300 far from the time T2 when the hot water supply facility 20 is used is moved to the second section 1202 where the power purchase price is low.

As a result, boiling by the hot water supply facility 20 was supposed to be performed continuously from 0:00 to 6:00 in the first operation schedule, but in the third operation schedule from 2:00 to 6:00, And from 10 o'clock to 12 o'clock.

When the user performs boiling in a time zone closer to the time T2 when the hot water supply facility 20 is used, there is an effect of reducing heat loss. Further, in the cooling by the air conditioning equipment 30, since a relatively large load is generally applied at the start of operation, the use of the cold exhaust heat from the hot water supply equipment 20 at the start of the operation of the air conditioning equipment 30 increases the energy saving effect.

In addition, there is a possibility of running out of hot water from time T3 to time T2 by shifting a part of the boiling schedule backward. For this reason, it is desirable for the control unit 506 to create the third operation schedule on the condition that a predetermined minimum amount of hot water is always secured in the hot water storage tank 201. In addition, since the boiling operation time period is divided, there is a time during which the boiling operation is not started after the start of the boiling operation. During this time, the control unit 506 sets the first operation schedule so that the hot water supply facility 20 performs the heat insulation operation. May be.

Next, the control unit 506 determines which of the three levels the capacity of the outdoor unit 210 of the hot water supply facility 20 is set based on the set target temperature of cooling.

That is, the control unit 506 determines whether or not the set target temperature for cooling is lower than the predetermined first temperature based on the second operation schedule of the air conditioning equipment 30 (step S707). .

When the set target temperature of cooling is lower than the first temperature (step S707; YES), the control unit 506 sets the capacity of the outdoor unit 210 of the hot water supply facility 20 to “high” (step S708). A third operation schedule for operating the hot water supply facility 20 is determined.

When the set cooling target temperature is not lower than the first temperature (step S707; NO), the control unit 506 determines that the set cooling target temperature is lower than the predetermined second temperature. It is determined whether or not it is high (step S709).

When the set cooling target temperature is not higher than the predetermined second temperature (step S709; NO), the control unit 506 sets the capacity of the outdoor unit 210 of the hot water supply facility 20 to “medium”. (Step S710), a third operation schedule for operating the hot water supply facility 20 is determined.

When the set cooling target temperature is higher than the predetermined second temperature (step S709; YES), the control unit 506 sets the capacity of the outdoor unit 210 of the hot water supply facility 20 to “low”. (Step S711), a third operation schedule for operating the hot water supply facility 20 is determined.

FIG. 14 shows the relationship between the capacity of the outdoor unit 210 and the temperature of cold exhaust heat (unit is Celsius), and the relationship between the capacity of the outdoor unit 210 and power consumption (unit is watt hour). Specifically, the capacity of the outdoor unit 210 is a heat exchange amount per unit time by the outdoor unit 210. The high capacity of the outdoor unit 210 means that the heat exchange amount per unit time by the outdoor unit 210 is large. In other words, the higher the capacity of the outdoor unit 210, the faster the boiling.

As the capacity of the outdoor unit 210 increases, the amount of power consumption increases, but the temperature of the cold exhaust heat tends to decrease. Further, as the capacity of the outdoor unit 210 decreases, the amount of power consumption decreases, but the temperature of cold exhaust heat tends to increase.

In this embodiment, the capacity of the outdoor unit 210 that can be set from the HEMS controller 100 is set to three levels: high, medium, and low. If the target temperature for cooling is not less than the first temperature and not more than the second temperature, it is set to “medium”. If the target temperature for cooling is lower than the first temperature, it is set to “high”. If the target temperature for cooling is higher than the second temperature, it is set to “low”.

However, the capacity of the outdoor unit 210 that can be set by the control unit 506 may not be determined in three stages, and may be one, two, or four or more stages. If it is one stage, the capacity of the outdoor unit 210 is fixed, and the processing from step S707 to step S711 is unnecessary.

If there are two stages, steps S709 and S710 are unnecessary, and if the target temperature for cooling is higher than the first temperature in step S707 (step S707; NO), the control unit 506 causes the outdoor unit of the hot water supply facility 20 to operate. The capability of 210 is set to “low” (step S711).

If there are four stages, the control unit 506 determines that the cooling target temperature is the third temperature (however, the first temperature) instead of determining whether the cooling target temperature is higher than the second temperature in step S709. It is determined whether the temperature is lower than <third temperature <second temperature). If the target temperature for cooling is lower than the third temperature, it is set to “medium” (second highest capability from the top). If the target temperature for cooling is not lower than the third temperature, the same as in step S709. It is determined whether or not the target temperature for cooling is higher than the second temperature. If the target temperature for cooling is lower than the third temperature, it is set to “first low” (the third highest capacity from the top), and if the target temperature for cooling is not lower than the third temperature, Set to 2 low "(the fourth highest (lowest) ability from the top). If there are more than 5 stages, the number of times of sieving by the target temperature should be increased as in the case of 4 stages.

When the time zone for boiling by the hot water supply equipment 20 and the time zone for cooling by the air conditioning equipment 30 overlap, the control unit 506 sets the capacity of the outdoor unit 210 to “high” during cooling, By adjusting the operation schedule of the hot water supply facility 20 such that the capacity of the outdoor unit 210 is set to “low” while not being cooled, the efficiency of the entire energy management system 1 is increased.

Also, the control unit 506 changes the first operation schedule so as to change the operating time of the hot water supply facility 20 and change the capacity of the outdoor unit 210. As shown in FIGS. 15 and 16, the second operation schedule of the air conditioner 30 is cooling from 23:00 to 0:00, and the first operation schedule of the hot water supply facility 20 is “medium” from 0:30 to 5:00. A specific example will be described in the case of boiling.

In such a case, the control unit 506 sets the first operation schedule so that the hot water supply facility 20 is heated at the capacity “high” during the time from 23:00 to 0:00 when the cooling operation by the air conditioning facility 30 is set. The air conditioner 30 is caused to use the cold exhaust heat from the hot water supply facility 20 during this period. Since the hot water supply facility 20 performs a boiling operation at a high capacity between 23:00 and 00:00, the conventional operation time (from 0:30 to 5:00) can be reduced. Then, for example, the control unit 506 changes the first operation schedule so that the remaining boiling amount out of the required boiling amount is boiled at the capacity “low” between 2 o'clock and 5 o'clock.

Even if the second operation schedule of the air conditioning equipment 30 is not set, for example, the representative value (average value, median value, etc.) of the user's bedtime is stored in the storage unit 505 of the HEMS controller 100. In addition, the hot water supply facility 20 may be set to operate at a “high” boiling capacity until the user bedtime.

In the examples of FIGS. 15 and 16, in the changed first operation schedule, there is a time during which the boiling operation is not performed between 0 o'clock and 2 o'clock, but during this time, the hot water supply facility 20 may be set to perform a heat insulation operation. Good.

Thus, according to the present embodiment, by effectively using the cold exhaust heat from the hot water supply facility 20 in the air conditioning facility 30, it is possible to realize energy saving by linking the hot water supply facility and the air conditioning facility. In addition, by making it possible to change the operation schedule of the hot water supply equipment 20 based on the operation schedule of the air conditioning equipment 30 so that the cold exhaust heat from the hot water supply equipment 20 can be used effectively in the air conditioning equipment 30, an energy saving effect can be achieved. Can be increased.

The present invention is not limited to the above-described embodiment, and various modifications and applications are possible. Moreover, it is also possible to freely combine the constituent elements of the above-described embodiments.

(Modification 1)
In the above embodiment, the case where the HEMS controller 100 is arranged in the building has been described, but the HEMS controller 100 may be arranged outside the building. For example, the server 90 on the Internet may function as the HEMS controller 100.

For example, as shown in FIG. 17, a router 1700 is arranged in the building instead of the HEMS controller 100. On the other hand, a server 90 that functions as the HEMS controller 100 is disposed on the communication network 80 outside the home. In this case, the router 1700 and the server 90 cooperate to play the role of the HEMS controller 100.

(Modification 2)
FIG. 18 shows a functional configuration of the HEMS controller 100 in the second modification. The control unit 506 and the image processing unit 502 cooperate to function as a display unit 1801 that displays the first operation schedule, the second operation schedule, and the third operation schedule. In addition, the control unit 506 and the input unit 504 cooperate to control the hot water supply facility 20 according to the displayed first operation schedule or the third operation schedule and to operate the air conditioning facility 30 based on the displayed second operation schedule. It functions as an input receiving unit 1802 that receives an instruction from the user as to whether or not to control.

In the second modification, when the control unit 506 creates the first operation schedule of the hot water supply facility 20 and the second operation schedule of the air conditioning facility 30, the created first operation schedule and second operation schedule are changed to the first operation schedule. The information is displayed on the display 551 before the control based on the second operation schedule is executed.

Then, control unit 506 receives an instruction from the user as to whether to control the operation of hot water supply facility 20 according to the displayed first operation schedule and to control the operation of air conditioning facility 30 according to the displayed second operation schedule. . When an instruction from the user to operate the hot water supply facility 20 and the air conditioning facility 30 is input according to the displayed first operation schedule and second operation schedule, the operation of the hot water supply facility 20 is controlled based on the first operation schedule. The operation of the air conditioning equipment 30 is controlled based on the second operation schedule.

Moreover, if the control part 506 changes the 1st driving | running schedule of the hot water supply equipment 20 based on the 2nd driving | running schedule of the air-conditioning equipment 30, and creates a 3rd driving | running schedule, the produced | generated 3rd driving | running schedule will be 3rd driving | running schedule This is displayed on the display 551 before execution of the control based on.

And the control part 506 receives the instruction | indication from a user of whether to control operation | movement of the hot water supply equipment 20 according to the displayed 3rd driving | running schedule. When an instruction from the user to operate the hot water supply facility 20 is input according to the displayed third operation schedule, the operation of the hot water supply facility 20 is controlled based on the third operation schedule.

Note that the control unit 506 applies the first operation schedule and the second operation schedule immediately without any explicit instruction from the user to control the hot water supply equipment 20 and the air conditioning equipment 30, and the third operation schedule. May be applied after receiving an explicit instruction from the user to control the hot water supply facility 20.

(Modification 3)
In the above embodiment, the air conditioning equipment 30 is operated at a specific time determined by the operation schedule. However, when the air conditioning equipment 30 is operated continuously for 24 hours, the control unit 506 is configured to operate the server 90 or the communication. Based on the weather data acquired from the computer on the network 80, a time zone in which the predicted outside air temperature is higher than a predetermined temperature is discriminated, and the discriminated time zone is determined as “to be operated in cooling” in step S703. Can be replaced by “time”.

In this case, in step S703, the control unit 506 determines whether there is a time zone in which the predicted outside air temperature is higher than a predetermined temperature instead of determining whether there is a plan for cooling. Good.

Further, in step S704, instead of determining whether or not the scheduled time T1 for starting the cooling is earlier than the scheduled time T2 for using the hot water supply, the control unit 506 determines that the outside air temperature becomes higher than the predetermined temperature. What is necessary is just to discriminate | determine whether the estimated time is before the scheduled time T2 which uses hot water supply.

Further, in step S705, the control unit 506 determines whether or not a time zone cheaper than the power purchase price at the time of boiling by the hot water supply facility 20 is included in the cooling operation time. In addition, if it is determined whether or not a time zone in which the predicted outside air temperature is higher than a predetermined temperature includes a time period lower than the power purchase price at the time of boiling by the scheduled hot water supply facility 20 is included. Good.

Further, in step S706, the control unit 506 raises the boiling point by the hot water supply facility 20 to the second section 1202 that is lower than the planned power purchase price for the boiling by the hot water supply facility 20 within the cooling operation time. Instead of shifting a part of the schedule, the time when the predicted outside air temperature is higher than a predetermined temperature and is lower than the planned power purchase price for boiling by the hot water supply facility 20 A part of the boiling schedule by the hot water supply facility 20 may be shifted.

(Modification 4)
As illustrated in the examples of FIGS. 13 and 15, when the control unit 506 changes the first operation schedule of the hot water supply facility 20, the user is inquired whether to change the first operation schedule before the change. You may design as follows.

In this case, the control unit 506 instructs the image processing unit 502 to change the driving schedule as follows, along with the changed first driving schedule. Then, an instruction to display on the display 551 such a message as “XX yen electricity bill is advantageous. When the above message is displayed on the display 551, the input unit 504 receives a user instruction and sends the received instruction to the control unit 506. Control unit 506 changes the first operation schedule of hot water supply facility 20 based on the instruction sent from input unit 504.

It should be noted that the message may be designed to be displayed on the user terminal 40.

It is possible to implement any combination of the above embodiment and the first to fourth modifications.

A program for operating a computer as all or a part of the HEMS controller 100 is stored and distributed in a computer-readable recording medium such as a memory card, CD-ROM, DVD, or MO (Magneto Optical disk). This may be installed in another computer and operated as the above-described means, or the above-described steps may be executed.

Furthermore, the program may be stored in a disk device or the like included in a server device on the Internet, and may be downloaded onto a computer by being superimposed on a carrier wave, for example.

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

As described above, according to each of the above embodiments, it is possible to provide an energy management device, an energy management method, and a program that can enhance the energy saving effect by linking hot water supply equipment and air conditioning equipment.

1 energy management system, 20 hot water supply facilities, 30 air conditioning facilities, 40 user terminals, 50 power generation facilities, 60 power storage facilities, 70 electrical equipment, 80 communication networks, 90 servers, 100 HEMS controllers, 210 outdoor units, 220 switching devices, 230 buildings 231 duct, 300 indoor unit, 400 heat exchanger, 501,601 communication unit, 502,602 image processing unit, 503,603 audio processing unit, 504,605 input unit, 505,606 storage unit, 506,607 control unit 521 Information acquisition unit 522 Operation planning unit 523 Operation control unit 551 651 display 552 652 speaker 604 I / O unit 1700 router 1801 display unit 1802 input reception unit

Claims

An energy management device that controls a hot water storage hot water supply facility and an air conditioning facility that performs air conditioning in a building using cold exhaust heat from the hot water storage hot water facility,
An information acquisition unit for acquiring a first operation schedule of the hot water storage type hot water supply facility and a second operation schedule of the air conditioning facility;
An operation control unit for controlling the operation of the hot water storage type hot water supply facility according to a third operation schedule that is changed from the first operation schedule so as to reduce power consumption by the air conditioning facility based on the second operation schedule;
An energy management device comprising:
Based on the second operation schedule, further comprising an operation planning unit that creates the third operation schedule by changing the first operation schedule so as to reduce power consumption by the air conditioning equipment,
The operation control unit controls the operation of the hot water storage type hot water supply facility based on a third operation schedule created by the operation planning unit.
The energy management apparatus according to claim 1.
If the scheduled time for the air conditioning facility to perform a cooling operation is earlier than the scheduled time for the hot water storage type hot water supply facility to supply hot water, the operation planning unit sets the scheduled time for the hot water storage type hot water supply facility to perform boiling. , Change to the scheduled time for the air conditioning equipment to perform the cooling operation,
The energy management apparatus according to claim 2.
The information acquisition unit further acquires fee data indicating a power purchase price,
If the power purchase price at the scheduled time for causing the air conditioning equipment to perform cooling operation is lower than the power purchase price at the scheduled time for supplying hot water to the hot water storage type hot water supply equipment, the operation planning unit raises the hot water storage type hot water supply equipment. Changing the scheduled time to perform the cooling operation to the scheduled time for the air conditioning equipment to perform the cooling operation,
The energy management apparatus according to claim 2.
The information acquisition unit further acquires fee data indicating a power purchase price and a power sale price,
The operation planning unit subtracts the power sale price from the power purchase price at the scheduled time of supplying hot water to the hot water storage-type hot water supply facility by subtracting the power sale price from the power purchase price at the scheduled time of causing the air conditioning facility to perform the cooling operation. If it is cheaper than the forehead, the scheduled time for boiling the hot water storage type hot water supply equipment is changed to the scheduled time for the air conditioning equipment to perform cooling operation,
The energy management apparatus according to claim 2.
The operation planning unit may include a part of a scheduled time zone in which the hot water storage type hot water supply facility is boiled away from a scheduled time period in which the hot water storage type hot water supply facility is heated to the air conditioning facility. Change to the scheduled time for air conditioning,
The energy management device according to any one of claims 2 to 5.
The operation planning unit operates the hot water storage type hot water supply facility with the first capacity if the target temperature for cooling in the air conditioning facility is lower than the first temperature, and the target temperature for cooling in the air conditioning facility is the first temperature. If the temperature is not lower than the temperature, the third operation schedule is created so that the hot-water storage type hot water supply equipment is operated with a second capacity lower than the first capacity.
The energy management apparatus according to any one of claims 2 to 6.
The operation planning unit, if a part of a scheduled time zone for boiling the hot water storage type hot water supply equipment overlaps with a scheduled time zone for cooling operation of the air conditioning equipment, the hot water storage type in the overlapping time zone The third operation schedule is created so that the hot water supply facility is operated with the first capability and the hot water storage hot water supply facility is operated with the second capability in a non-overlapping time zone.
The energy management apparatus according to claim 7.
A display unit for displaying the third operation schedule;
An input receiving unit that receives an instruction from a user as to whether or not to control the operation of the hot water storage hot water supply facility according to the displayed third operation schedule;
Further comprising
When there is an instruction from the user to control the operation of the hot water storage hot water supply facility according to the displayed third operation schedule, the operation control unit performs the hot water storage type according to the displayed third operation schedule. Control the operation of the water heater,
The energy management apparatus according to any one of claims 1 to 8.
The energy management device is connected to an external server via a network,
The information acquisition unit acquires weather data including information indicating the predicted outside air temperature from the external server,
When the predicted outside air temperature includes a time period higher than a predetermined temperature, the operation control unit is configured to reduce the power consumption by the air conditioning facility based on the weather data. The operation of the hot water storage type hot water supply equipment is controlled by the third operation schedule changed.
The energy management apparatus according to claim 1.
An energy management method for controlling a hot water storage hot water supply facility and an air conditioning facility that performs air conditioning in a building using cold exhaust heat from the hot water storage hot water supply facility,
An information acquisition step in which a computer acquires a first operation schedule of the hot water storage type hot water supply facility and a second operation schedule of the air conditioning facility;
An operation control step in which a computer controls the operation of the hot water storage type hot water supply facility according to a third operation schedule in which the first operation schedule is changed so as to reduce the power consumption by the air conditioning facility based on the second operation schedule. When,
Including energy management methods.
A computer that controls a hot water storage type hot water supply facility and an air conditioning facility that performs air conditioning in a building using cold exhaust heat from the hot water storage type hot water supply facility,
An information acquisition unit for acquiring a first operation schedule of the hot water storage type hot water supply facility and a second operation schedule of the air conditioning facility;
An operation control unit that controls the operation of the hot water storage type hot water supply facility according to a third operation schedule that is based on the second operation schedule and that has changed the first operation schedule so as to reduce power consumption by the air conditioning facility;
Program to function as.