JP2022025398A - Electric power management system - Google Patents

Abstract

To provide an electric power management system capable of improving economical efficiency in operating an air conditioner with surplus electric power.SOLUTION: There is provided an electric power management system that manages electric power of a house H comprising a photovoltaic power generation panel 1 and an air conditioner 5, and that comprises a generated power amount prediction part, a power consumption prediction part, a surplus power amount prediction part, and an operation planning part 100. The generated power amount prediction part calculates predicted generated power amounts of the photovoltaic power generation panel 1 in predetermined time units, the power consumption prediction part calculates predicted power consumptions of the house H in the predetermined time units, and the surplus power amount prediction part calculates predicted surplus power amounts in the predetermined time units based upon the predicted generated power amounts and predicted power consumptions. The operation planning part 100 sets a surplus power operation plan to operate the air conditioner 5 with the surplus electric power, the surplus power operation plan including setting of an upper-limit value of the power consumptions in operating the air conditioner 5 with the surplus power.SELECTED DRAWING: Figure 1

Description

The present invention relates to a power management system.

There is known a power management system in which an air conditioner is operated by the surplus power when a surplus power is generated in the power generated by the photovoltaic power generation device (see, for example, Patent Document 1).

In this conventional technique, when surplus electric power is generated, an air conditioner in the underfloor space is operated to store heat energy in the underfloor space.

Japanese Unexamined Patent Publication No. 2014-134326

However, the amount of generated power depends on the weather, and the amount of power consumption also fluctuates according to the state of use of the resident's power, so the amount of surplus power, which is the difference between the two, also fluctuates. If the amount of surplus power fluctuates, the amount of power consumed by the air conditioner may exceed the amount of surplus power, and in this case, the amount of power consumed may exceed the amount of surplus power, which is uneconomical. ..

In addition, it is inefficient if the air conditioner is stopped and the air conditioner is repeatedly operated and stopped intermittently when the amount of surplus power is insufficient, and it is inefficient as a whole as compared with the case of continuous operation. It is uneconomical because the power consumption of the air conditioner increases.

The present disclosure has been made focusing on the above-mentioned problems, and an object of the present disclosure is to provide a power management system capable of improving economic efficiency when operating an air conditioner with surplus electric power.

In order to achieve the above object, the electric power management system of the present disclosure is an electric power management system for managing electric power of a building equipped with a photovoltaic power generation device and an electric power driven air conditioner. Then, the power management system has a power generation amount prediction unit that obtains the power generation amount of the solar power generation device as a predicted power generation amount in a predetermined time unit based on a weather forecast, and a past power consumption of the power consumption in the building. Based on the data, the power consumption prediction unit that obtains the predicted power consumption in the predetermined time unit, and the predicted surplus power amount in the predetermined time unit is obtained based on the predicted power generation amount and the predicted power consumption amount. It includes a surplus electric energy prediction unit and an operation planning unit that sets a surplus electric energy operation plan that is a plan to operate the air conditioner with surplus electric energy. Further, the surplus power operation plan of the operation planning unit includes setting an upper limit value of the power consumption when operating the air conditioner with the surplus power.

In the power management system of the present disclosure, when the air conditioner is operated by surplus power, the power consumption of the air conditioner is set as compared with the case where the upper limit is not set by setting the upper limit of the power consumption of the air conditioner. Can be suppressed from exceeding the amount of surplus electricity. As a result, it is possible to suppress the consumption of electric power more than the amount of surplus electric power, and it is possible to suppress the occurrence of intermittent operation of the air conditioner, improve the energy efficiency, and improve the economic efficiency.

It is an overall explanatory view which showed the outline of the electric power management system of Embodiment 1. FIG. It is a flowchart which shows the flow of the process of setting the surplus power operation plan by the power management system of Embodiment 1. FIG. It is explanatory drawing which shows the specific example of the setting of the upper limit value of the power consumption and the operation time by the power management system of Embodiment 1, and shows the case where the predicted surplus power amount is relatively small. It is explanatory drawing which shows the specific example of the setting of the upper limit value of the power consumption and the operation time by the power management system of Embodiment 1, and shows the case where the peak of the predicted surplus power is divided into two time zones. .. It is explanatory drawing which shows the specific example of the setting of the upper limit value of the power consumption and the operation time by the power management system of Embodiment 1, and shows the case where the predicted surplus power amount is relatively large. It is explanatory drawing which shows the specific example of the setting of the upper limit value of the power consumption and the operation time by the power management system of Embodiment 2, and (a) is set the upper limit value relatively high, and the amount of surplus power is used. A case where the amount of surplus power is relatively large is shown, and a case where the upper limit value is set relatively low and the amount of surplus power used is relatively small is shown. It is a flowchart which shows the flow of the process of setting the surplus power operation plan by the power management system of Embodiment 3. It is explanatory drawing which shows the specific example of the setting of the upper limit value of the power consumption and the operation time by the power management system of Embodiment 3.

Hereinafter, embodiments of the power management system of the present disclosure will be described.
FIG. 1 is an explanatory diagram showing an outline of the power management system of the first embodiment.
This electric power management system A is a system for controlling various electric power devices installed in each house shown as a house H1, a house H2, a house H3, and so on. Hereinafter, when referring to an unspecified residence, it is simply referred to as residence H.

In the house H1, a photovoltaic power generation panel 1, a power conditioner 2, a distribution board 3, a power storage device 4, an air conditioning device 5, a hot water supply device 6, a general power consumption device 7, and a control unit 10 are installed.

The photovoltaic power generation panel 1 receives sunlight and generates DC power generation. The power conditioner 2 inputs the DC power generated by the photovoltaic power generation panel 1, converts it into AC power (usually 100V AC power for home use), and supplies it to the distribution board 3 side. The photovoltaic power generation device is composed of the photovoltaic power generation panel 1 and the power conditioner 2.

Further, the power conditioner 2 also performs mutual conversion between the DC stored power and the AC power between the power storage device 4 and the distribution board 3.

The distribution board 3 powers the air conditioner 5, which is a power load device in the house H1, the hot water supply device 6, and other general power consumption devices (for example, lighting equipment, refrigerator, various home appliances, etc.) 7. Can be supplied. Further, a commercial power supply 9 is connected to the distribution board 3 via a power meter 8.

The air conditioner 5 is a heat pump type equipped with an indoor unit 51 installed in the underfloor UF and an outdoor unit 52 installed outside the house, and exchanges heat between the outside air and the indoor air to communicate with the underfloor UF and the underfloor UF. The indoor ID that has been created is heated and cooled. Further, the air conditioner 5 is capable of timer operation, that is, operation for a set time from the start of operation. Further, a heat storage material 53 is installed in the underfloor UF.

The hot water supply device 6 has a water storage tank (not shown), and is used to boil and store hot water by electric power, and a type that boil water by a heater or a type that boil water by a heat pump can be used.
The control unit 10 has a function of controlling and monitoring various devices including the above-mentioned power storage device 4, air conditioner 5, and hot water supply device 6 installed in the house H.
Further, the control unit 10 is connected to the server SV via the communication network N via the router in the unit. Then, the control unit 10 transmits data regarding the operating state and power consumption of each device of the house H1 to the server SV.

Then, the server SV creates an operation plan of at least the air conditioner 5 of each house H by the operation planning unit 100 based on the input information, and outputs the operation plan information to the control unit 10.

Further, the control unit 10 controls the operation of the air conditioner 5 and the hot water supply device 6 based on the operation plan information received from the server SV. The server SV may be divided into a server for inputting various information and a server for creating and outputting an operation plan, or may be configured by a plurality of servers.

Here, in the first embodiment, the server SV sets a surplus power operation plan, which is a plan to operate the air conditioner 5 with the surplus power described later, as an operation plan. Hereinafter, control based on the surplus power operation plan will be described.

In the surplus power operation plan, the power generation amount and the power consumption amount of the next day are predicted for each house H, and the surplus power amount is predicted from the power generation amount and the power consumption amount, and based on the predicted surplus power amount. Set a plan to operate the air conditioner 5.

Then, in the surplus power operation plan, the upper limit value of the power consumption of the air conditioner 5 and the operation time are set. Further, when the air conditioner 5 is operated according to the surplus power operation plan, it is operated in a keep operation mode different from the normal operation mode. Here, the normal operation mode is a mode in which the room temperature is operated at the set air volume so as to keep the room temperature at the set temperature based on the set temperature and the air volume input by the user. In the keep operation mode, the room temperature is kept at a temperature that saves energy lower than the set temperature during heating and a temperature that saves energy higher than the set temperature during cooling, and the air volume is smaller than that of normal operation. It is a mode to operate at a temperature and air volume that can smoothly shift to.

FIG. 2 is a flowchart showing a flow of processing for setting a surplus power operation plan, and in the first embodiment, the operation planning unit 100 included in the server SV executes the operation.

In step S101, the power generation power per unit time of the next day is based on the correlation between the weather forecast of the next day according to the area of each house H and the past actual weather of each house H and the past power generation amount data. Predict the amount. Here, in the first embodiment, the unit time is one hour, but the unit time is not limited to one hour, but is shorter than one hour such as 30 minutes, or one such as one and a half hours or two hours. The unit may be longer than the time.

Further, in the first embodiment, the amount of power generated on the next day is predicted, but the day to be predicted is not limited to the next day, and may be the day after the next day or a predetermined period over a plurality of days. .. In this case, the weather forecast is not limited to the next day, but is the forecast for the day to be predicted. Further, the server SV stores the power generation performance of the photovoltaic power generation panel 1 installed in each house H in advance in association with the house H.

In step S102, the power consumption per unit time of the next day is predicted based on the past power consumption data of each house H. Further, when the past power consumption is associated with the weather data including the temperature and the weather, the power consumption according to the weather of the next day may be obtained.

In step S103, the predicted surplus power amount per unit time of the next day is obtained from the difference between the predicted power generation amount and the predicted power consumption amount for each house H. In the first embodiment, in order to prevent the predicted surplus power amount from deviating to the smaller side than the actual surplus power amount, a value obtained by multiplying the calculated predicted surplus power amount by a coefficient smaller than 1 is used. The final predicted surplus power amount.

In the next step S104, the upper limit value of the power consumption of the air conditioner 5 in the surplus power operation plan and the operation time in the surplus power operation plan are set based on the predicted surplus power amount. The details of the upper limit of the power consumption and the operating time will be described later.

In the next step S105, the operation plan information including the upper limit value of the power consumption and the operation time in the surplus power operation plan obtained for each house H is transmitted to the control unit 10 of each house H.

As a result, the process of setting the surplus power operation plan in the server SV is completed. Further, the control unit 10 of each house H controls the operation of the air conditioner 5 based on the transmitted operation plan information (upper limit value of power consumption and operation time).

Next, the setting of the upper limit value of the power consumption and the operation time in step S104 will be described.

In the first embodiment, the upper limit of the power consumption is set from the following conditions (a) and (b).
(A) Set based on the power consumption based on the keep operation, which is a small energy mode of the normal operation set based on the past daily lifestyle (set temperature and set air volume of the air conditioner 5).
(B) Set the surplus power to a value that can be effectively used based on the predicted surplus power amount.
The upper limit value is set in the air conditioner 5 within a range in which the power consumption can be switched.

Further, the operation time is set from the following conditions (c) and (d).
(C) Set as the operation time when continuous operation for a predetermined time (2 hours) or more is possible.
(D) Set based on the operation time of keep operation corresponding to the time of going out and the time of returning home according to the lifestyle of the resident.

The minimum required continuous operation time that regulates continuous operation for a predetermined time or longer is "2 hours" in the first embodiment. Further, the operation time is set by the operation start time and the operation end time or the timer time from the operation start time.

Further, the above-mentioned conditions (a) to (d) may all be satisfied, but may be set as long as the priority is given and the condition having a high priority is satisfied.

Next, the upper limit of the power consumption and the setting of the operating time will be described with reference to FIGS. 3 to 5.

FIG. 3 shows a case where the upper limit value (1 kW) required for the keep operation is set based on the condition (a) above. When this upper limit is set, the operation start time (10 o'clock) and the operation end time (15:00) satisfying the condition of the above (c) are set.

Therefore, the control unit 10 that has received the operation plan information including the upper limit value of the power consumption and the operation time from the server SV has the operation start time (10 o'clock) to the operation end time (15:00) due to the surplus power. Until then, the air conditioner 5 is continuously operated in the keep operation mode.

In this case, by executing the keep operation in which the power consumption is suppressed, the power consumption of the air conditioner 5 is suppressed to exceed the surplus power amount as compared with the case of executing the normal operation, and the commercial power source 9 is used. Efficient and economical operation is possible by suppressing the occurrence of power supply and intermittent operation.

That is, in the case of normal operation in which the power consumption is relatively large, the power consumption may exceed the surplus power consumption, the shortage may be supplied from the commercial power source 9, or the operation may be stopped when the power consumption is insufficient. be. It is uneconomical when power is supplied from the commercial power source 9, and when the operation is temporarily stopped and intermittent operation is performed, the room temperature deviates from the set temperature and the heat load at the start of normal operation thereafter increases, resulting in inefficiency. The target and economic efficiency will deteriorate.

Here, the normal operation shall be started before a predetermined time (for example, one hour) of the resident's return time. If the room temperature deviates from the set temperature at the start of this normal operation, the ventilation temperature is higher than the set temperature in the case of heating and higher than the set temperature in the case of cooling at the start of the normal operation of the air conditioner 5. It is necessary to lower the air volume and increase the air volume. In this case, the heat load of the air conditioner 5 becomes large, and the power consumption becomes relatively large.

On the other hand, in the first embodiment, by setting the upper limit value of the power consumption amount, the continuous operation of the keep operation of the air conditioner 5 is executed and the room temperature is kept at a temperature close to the set temperature, so that the heat exchange amount and the air blowing amount are obtained. It is possible to suppress the amount of power consumption.

FIG. 4 is an example in which the peak of the predicted surplus electric energy is divided into two time zones. In this case as well, the upper limit of the power consumption is set to a value at which the keep operation can be executed, as in FIG. Then, based on the condition (c) above, the first operation time from the first operation start time (10 o'clock) to the first operation end time (12:00) and the second operation start time (13:00). ) To the second operation end time (15:00).

Therefore, the minimum continuous operation time (2 hours) is secured while the air conditioner 5 is kept in operation, and the surplus electric power can be effectively used.

If the upper limit of the power consumption is set relatively high with respect to the predicted surplus power shown in FIG. 4 (for example, 2 kW), there is no operable time or only from 13:00 to 14:00, which is the lowest. The continuous operation time (2 hours) may not be exceeded and the operation time may not be secured. On the contrary, if the upper limit value is set low so that long continuous operation is possible, the minimum required electric energy required for the keep operation of the air conditioner 5 cannot be obtained.

FIG. 5 shows an example in which the predicted surplus power amount is relatively large as compared with the example of FIG. In this case, in the time zone when the predicted surplus power amount is large, the upper limit value of the power consumption amount is set relatively high based on the condition (b) to effectively use the surplus power. As a result, during the time period (11:00 to 14:00) when the predicted power generation amount is large, the air conditioner 5 is operated with a higher power consumption than the keep operation to ensure high air conditioning performance, and heat is stored in the heat storage material 53. can do. In this case, the upper limit of the power consumption of 2 kW may be the power consumption during normal operation or may be lower than the power consumption during normal operation.

(Effect of Embodiment 1)
(1) The electric power management system A of the first embodiment manages electric power of a house (building) H including a photovoltaic power generation panel (photovoltaic power generation device) 1 and an air conditioner 5 driven by electric power. It is a system. The power management system A has a power generation amount prediction unit (a part that performs processing of S101), a power consumption prediction unit (a part that performs processing of S102), and a surplus power amount prediction unit (a part that performs processing of S103). ), And an operation planning unit (a part that processes S104) 100.

The power generation amount prediction unit obtains the power generation amount of the photovoltaic power generation panel 1 as the predicted power generation amount in a predetermined time unit based on the weather forecast.
The power consumption prediction unit obtains the predicted power consumption in a predetermined time unit based on the past power consumption data of the power consumption in the house H.

The surplus electric energy prediction unit obtains the predicted surplus electric energy in the predetermined time unit based on the predicted power generation amount and the predicted power consumption amount.
The operation planning unit 100 sets a surplus power operation plan, which is a plan for operating the air conditioner 5 with surplus power. Further, the surplus power operation plan of the operation planning unit 100 includes setting an upper limit value of the power consumption when operating the air conditioner 5 with the surplus power.

As described above, in the first embodiment, since the upper limit of the power consumption of the air conditioner 5 is set, the air conditioner 5 is continuously suppressed from the upper limit of the power consumption as compared with the case where the upper limit is not set. It is possible to drive. As a result, the power consumption of the air conditioner 5 can be suppressed and the economic efficiency can be improved.

(2) In the surplus power operation plan, the operation planning unit 100 of the power management system A of the first embodiment sets the time when the predicted surplus power exceeds the upper limit of the power consumption to the preset continuous operation set time. If it exceeds, it is set as the operating time due to surplus power.

Therefore, by suppressing the frequency of intermittent operation of the air conditioner 5 by operating the air conditioner 5 for less than the set continuous operation set time, the frequency of performing inefficient operation at the start of operation is reduced, which is economical. Can be improved.

(3) The operation planning unit 100 of the power management system A of the first embodiment consumes more power than in the normal operation in which the air conditioner 5 is operated so that the room temperature is set to the set temperature and the case where the room temperature is set as the set temperature. It is possible to set a keep operation that suppresses and operates to a temperature that saves energy. Then, in the surplus power operation plan, the upper limit value for executing the keep operation is set as the upper limit value for the amount of power consumption.

Therefore, during the operation according to the surplus power operation plan, the power consumption can be suppressed as compared with the case of the normal operation, the operating time can be secured for a long time by the surplus power, and the economic efficiency can be improved. In addition, the room temperature can be maintained at a predetermined temperature by the keep operation, and then the heat load when the normal operation is started can be suppressed, thereby suppressing the power consumption and improving the economic efficiency.

(4) In the surplus power operation plan, the operation planning unit 100 of the power management system A of the first embodiment sets the upper limit of the power consumption to a value at which the predicted surplus power can be used most.
Therefore, the surplus power can be effectively used, which is economically superior to the case where the surplus power is wasted, and as shown in FIG. 4, when the surplus power has a margin, the upper limit value is relative. It can be set high to improve the air conditioning performance.

(5) In the power management system A of the first embodiment, the air conditioner 5 is installed under the floor of the house H and can blow air to the underfloor UF, and the underfloor UF is provided with a heat storage material 53.
Therefore, when the air conditioner 5 is operated by the surplus electric power, the surplus electric power can be used more efficiently by storing the heat in the heat storage material 53. In particular, as in (4) above, when the upper limit is set relatively high when there is a margin in the surplus power, more heat can be stored in the heat storage material 53, and the surplus power is more efficient. It can be used and economic efficiency can be improved.

(Embodiment 2)
The second embodiment is different from the first embodiment in the method of setting the upper limit value of the power consumption and the operating time. In the second embodiment, the upper limit of the power consumption amount is set more finely based on the expected surplus power amount.

Specifically, in the second embodiment, after the predicted surplus power amount is obtained, the surplus power amount can be used most, that is, the upper limit value of the power consumption amount and the operating time within the range of the predicted surplus power amount. Set the upper limit value and the operation time for increasing the area of the rectangle having two sides. In this setting, in the second embodiment, the operation time is set in units of one hour as in the first embodiment, but the upper limit value is set in detail.

6 (a) and 6 (b) show an example of setting the upper limit value of the power consumption, and both figures have a common predicted surplus power amount. When the upper limit value ULa shown in FIG. 6 (a) is set, the area of the rectangle surrounded by the two sides of the upper limit value and the operation time is wider than when the upper limit value ULb shown in FIG. 6 (b) is set. That is, the amount of surplus power used increases.

Therefore, the operation planning unit 100 sets the upper limit value ULa shown in FIG. 6A, the operation start time, and the operation end time.

Therefore, in the power management system of the second embodiment, as described in (4) above, the surplus power can be effectively used, and an economically excellent effect can be obtained more reliably.

(Embodiment 3)
The third embodiment is an example in which the operation by the surplus electric power is performed not only by the air conditioner 5 but also by the hot water supply device 6.

FIG. 7 shows the processing flow of the power management system according to the third embodiment. In step S104b, which is different from the first embodiment, the surplus power operation plan includes the operation plan of the air conditioner 5 and the hot water supply device 6. Set an operation plan. In the third embodiment, the upper limit of the power consumption of the hot water supply device 6 may be a preset value, and is based on various conditions like the upper limit of the power consumption of the air conditioner 5. May be set. Further, as for various conditions, (a), (b), (c), (d) and the like described in the first embodiment can be used.

Here, in step S104b, first, the upper limit value of the power consumption of the hot water supply device 6 and the operation time are set. FIG. 8 shows an example thereof, and sets the operation start time (11:00) and the operation end time (15:00) based on the predicted surplus electric energy and the upper limit of the electric energy consumption of the hot water supply device 6. ..

Then, air conditioning is performed based on the final predicted surplus electric energy, which is the remaining surplus electric energy obtained by subtracting the upper limit of the power consumption of the hot water supply device 6 from the predicted surplus electric energy, and the upper limit of the power consumption of the air conditioner 5. The operation start time (11:00) and the operation end time (14:00) of the device 5 are set.

The operation planning unit 100 of the power management system of the third embodiment described above further includes a hot water supply device 6 as a target for setting an operation plan. Then, at the time of setting the surplus electric energy operation plan, when the predicted surplus electric energy allows the operation of the hot water supply device 6, first, the operation plan of the hot water supply device 6 is set, and the power consumption of the hot water supply device 6 is calculated from the predicted surplus electric energy. The value obtained by subtracting the upper limit of the amount is taken as the final surplus electric energy, and the surplus electric energy operation plan of the air conditioner 5 is set based on the final surplus electric energy.

Therefore, continuous operation with surplus electric power while suppressing the upper limit of the power consumption of the hot water supply device 6 and the air conditioner 5 is possible, and the economic efficiency can be improved.

Although the embodiment of the present invention has been described above with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes to the extent that the gist of the present invention is not deviated are included in the present invention. Is.
For example, in the first embodiment, the upper limit value of the power consumption and the operation time are obtained by the server SV, but the control unit 10 may be used to obtain the upper limit value and the operation time. In this case, the predicted surplus electric energy of each house H may be obtained by the server SV, and the control unit 10 may receive and obtain the data of the predicted surplus power amount from the server.
Further, in the first embodiment, the predicted surplus power amount is obtained by multiplying the value obtained by subtracting the predicted power consumption amount from the predicted power generation amount by a coefficient less than 1, but the present invention is not limited to this. In short, the predicted surplus electric energy may be obtained based on the predicted power generation amount and the predicted power consumption amount, and may be, for example, the difference between the predicted power generation amount and the predicted power consumption amount, or this difference. It may be a value obtained by subtracting a predetermined value from.

Further, in the first embodiment, an example in which the upper limit value of the power consumption of the air conditioner 5 is set in two ways is shown, but the present invention is not limited to this, and the upper limit value is set in detail as in the second embodiment. You may. Further, in the first embodiment, (a), (b), (c), and (d) are shown as the setting conditions of the upper limit value and the operation time, but it is not necessary to provide all of them as the setting conditions, and any one of them is provided. Alternatively, it may be a plurality of combinations of 3 or less.

Further, in the third embodiment, an example is shown in which the operation plan of the hot water supply device 6 is set first when setting the operation plan of the air conditioner 5 and the hot water supply device 6 by the surplus power, but the opposite of this. First, the operation plan of the air conditioner 5 may be set, and the operation plan of the hot water supply device 6 may be set by the remaining surplus power.

1 Solar power generation panel (solar power generation device)
2 Power conditioner (solar power generation device)
5 Air conditioner 6 Water heater 7 General power consumption equipment 10 Control unit 53 Heat storage material 100 Operation planning department A Power management system H House (building)
ID Indoor N Communication Network SV Server UF Underfloor

Claims (5)

It is a power management system that manages the power of a building equipped with a solar power generation device and an air conditioning device driven by electric power.
A power generation amount prediction unit that obtains the power generation amount of the photovoltaic power generation device as a predicted power generation amount in a predetermined time unit based on a weather forecast.
Based on the past power consumption data of the power consumption in the building, the power consumption prediction unit for obtaining the predicted power consumption in a predetermined time unit, and the power consumption prediction unit.
A surplus power amount prediction unit that obtains a predicted surplus power amount in a predetermined time unit based on the predicted power generation amount and the predicted power consumption amount.
An operation planning unit that sets a surplus power operation plan that is a plan to operate the air conditioner with surplus power, and
Equipped with
The surplus power operation plan of the operation planning unit is a power management system including setting an upper limit value of a power consumption when operating the air conditioner by the surplus power. In the power management system according to claim 1,
The operation planning department
In the surplus power operation plan, when the time when the predicted surplus power exceeds the upper limit value exceeds the preset continuous operation set time, the power management system is set as the operation time by the surplus power. In the power management system according to claim 1 or 2.
The operation planning department
A normal operation in which the air conditioner is operated so that the room temperature is set to the set temperature and a keep operation in which the air conditioner is operated so as to reduce power consumption and save energy as compared with the case where the room temperature is set to the set temperature are set. It is possible and
In the surplus power operation plan, the power management system sets the upper limit value at the time of executing the keep operation as the upper limit value. In the power management system according to any one of claims 1 to 3.
The operation planning department
In the surplus power operation plan, a power management system that sets the upper limit value to a value at which the predicted surplus power amount can be used most. In the power management system according to any one of claims 1 to 4.
The operation planning unit further includes a hot water supply device as a target for setting the surplus power operation plan.
At the time of setting the surplus electric energy operation plan, when the predicted surplus electric energy allows the operation of the hot water supply device, first, the operation plan of the hot water supply device is set, and the consumption of the hot water supply device from the predicted surplus electric energy. The value obtained by subtracting the electric energy is taken as the final surplus electric energy, and the surplus electric energy operation plan of the air conditioner is a power management system set based on the final surplus electric energy.

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