WO2015194149A1

WO2015194149A1 - Power management device, and power management system

Info

Publication number: WO2015194149A1
Application number: PCT/JP2015/002960
Authority: WO
Inventors: 遥仲宗根; 馬場　朗; 佑香山本; 薮ノ内　伸晃
Original assignee: パナソニック株式会社
Priority date: 2014-06-17
Filing date: 2015-06-12
Publication date: 2015-12-23
Also published as: JP6343343B2; JPWO2015194149A1

Abstract

　The problem of the present invention is for a user to easily obtain the average value of unit prices of rate in a unit period even when a stepped rate system is adopted for a rate plan. This power management device (1) is provided with an acquisition unit (11), an amount of power calculation unit (121), a unit price storage unit (14), an average value calculation unit (122), and a notification unit (15). The amount of power calculation unit (121) calculates an accumulated amount of power supplied to an electric load (4) from when the unit period started, by using the data of the used amount of power acquired by the acquisition unit (11). The unit price storage unit (14) stores the data of the unit price of rate of a power rate. The average value calculation unit (122) calculates the average value of unit prices of rate in the unit period. The notification unit (15) notifies the information of the average value of unit prices of rate calculated by the average value calculation unit (122).

Description

Power management device, power management system

The present invention generally relates to a power management apparatus and a power management system using the same, and more particularly to a power management apparatus that notifies a charge based on the amount of power used, and a power management system using the same.

2. Description of the Related Art Conventionally, there is a power consumption monitoring system that monitors power usage of a user and displays a power charge to the user (see, for example, Japanese Patent Application Publication No. 2005-308729). Further, as a charge plan for the electric energy charge, there is a stage charge system in which the charge unit price is switched according to the amount of power supplied from the system power supply to the electrical load from the start of the unit period.

When the stage charge system is adopted in the charge plan for the electric energy charge, the charge unit price is not uniform, and the charge unit price varies depending on the electric energy range. Therefore, in order to obtain the unit price of the electric energy charge per unit amount of power [kWh] in the unit period, that is, the average value of the unit price of charge in the unit period, it is necessary for the user to calculate and obtain it. there were.

The present invention has been made in view of the above reasons, and the purpose of the present invention is to enable the user to easily obtain the average value of the unit price for the unit period even when the stage fee system is adopted in the rate plan. An object of the present invention is to provide a power management apparatus that can be used, and a power management system using the same.

A power management apparatus according to an aspect of the present invention uses an acquisition unit that acquires data on the amount of power used supplied from a system power supply to an electrical load, and a unit period using the data on the amount of power used acquired by the acquisition unit. A power amount calculation unit that calculates an integrated power amount supplied to the electric load from the start of the power, and an electric energy that switches according to the magnitude of the integrated power amount supplied to the electric load from the start of the unit period The unit period using the unit price storage unit that stores the unit price data of the charge, the integrated power amount data calculated by the power amount calculation unit, and the unit price data stored in the unit price storage unit An average value calculation unit that calculates an average value of the unit price of the charge and a notification unit that notifies information on the average value of the unit price of charge calculated by the average value calculation unit.

A power management system according to an aspect of the present invention is supplied to the electric load from the power management apparatus, the notification unit that receives the information notified by the notification unit, and notifies the received information, and the system power supply. And a power measuring unit that measures the power consumption.

The drawings illustrate one or more embodiments in accordance with the present teachings, but are by way of example and not limitation. In the drawings, like numerals refer to the same or similar elements.
1 is a schematic configuration diagram of a power management apparatus and a power management system in an embodiment. It is a graph which shows the electric energy charge with respect to a unit period. It is a graph which shows the electric energy charge with respect to purchased electric energy. It is a graph which shows the electric energy charge with respect to purchased electric energy.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment)
FIG. 1 shows a schematic configuration diagram of the power management apparatus 1 and the power management system 10 of the present embodiment. This embodiment demonstrates as an example the case where the power management apparatus 1 and the power management system 10 are provided in the detached house 2 provided with the some electric load 4 supplied with electric power from the system power supply 7 (commercial power supply). In addition, the place (consumer facility) where the power management apparatus 1 and the power management system 10 are provided is not limited to the detached house 2, but in each dwelling unit, store, office, factory, etc. of the apartment house. There may be.

Consumers (hereinafter referred to as “users”) have contracted with electric utilities using a tiered rate system as a rate plan for energy consumption. Here, the stage fee system is a unit price (purchased power amount 1 [in accordance with the amount of power (hereinafter referred to as purchased power amount) that the system power supply 7 supplies to the electrical load 4 from the start of the unit period. This is a charge system in which the electricity charge per kWh] is switched. In other words, the stage fee system is a fee system in which a different unit price is set for each range of purchased electric energy from the start of a unit period. In the present embodiment, a stage fee system of the fee system shown in Table 1 below is adopted.

As shown in Table 1, out of all purchased electric energy from the start of the unit period, the purchased electric energy for 0 to 120 [kWh] has a unit price of A1 [yen]. The purchased power amount for 120 to 300 [kWh] has a unit price of A2 [yen], and the purchased power amount for excess of 300 [kWh] has a unit price of A3 [yen]. The magnitude relationship between the unit prices A1 to A3 is set to A1 <A2 <A3. That is, a higher unit price is applied as the purchased power amount increases.

For example, when the purchased electric energy in the unit period is 350 [kWh], the unit price of the purchased electric energy for 0 to 120 [kWh] out of the purchased electric energy of 350 [kWh] is A1 [yen]. The unit price of purchased electric energy for 120 to 300 [kWh] is A2 [yen], and the unit price of purchased electric energy for 300 to 350 [kWh] is A3 [yen]. Therefore, the electric energy charge is calculated as “120 × A1 + (300−120) × A2 + (350−300) × A3”. In addition, the numerical value in Table 1 is an example, and is not limited to this numerical value. In addition, the stage fee system used in the present embodiment is set so that the unit price of the charge is switched to three stages according to the amount of purchased power from the start of the unit period, but is not limited to three stages. It may be set to switch to a stage or four or more stages.

In the present embodiment, the unit period is one month, and the beginning of the month (one day) is the start of the unit period, and the end of the month is the end of the unit period. And a user pays the electric energy charge according to the magnitude | size of the purchased electric energy from the time of the start of a unit period to an electric power provider. In general, the unit period is determined by the electric power company, and may be one month from the middle of the month to the middle of the next month, or a period having a length different from one month. In addition, there are cases where basic charges are set in addition to electric energy charges depending on the electric utility. In this case, the user pays a predetermined basic charge and an electric energy charge corresponding to the amount of purchased electric power to the electric power company.

The power management apparatus 1 and the power management system 10 according to the present embodiment obtain and notify the unit price of the charge in accordance with the stage charge system. Specifically, the power management apparatus 1 and the power management system 10 are values obtained by dividing the power charge calculated based on the stage charge system in the unit period by the purchased power, that is, the average value of the unit price in the unit period (hereinafter referred to as the unit price). , Called average price unit price).

Hereinafter, configurations of the power management apparatus 1 and the power management system 10 according to the present embodiment will be described.

First, the equipment configuration of the detached house 2 provided with the power management apparatus 1 and the power management system 10 will be described. The detached house 2 is provided with a distribution board 3 having a branch portion 31, and this distribution board 3 is electrically connected to the system power supply 7 through a main circuit 34 and a power meter 33. . The electric power company charges the user a power charge based on the amount of power (purchased power) indicated by the power meter 33. The branch portion 31 is configured by a plurality of branch breakers, and is electrically connected via a plurality of electrical loads 4 (for example, lighting fixtures, air conditioners, televisions, etc.) provided in the detached house 2 and a plurality of branch circuits 35. Connected. Each electric load 4 is electrically connected to the system power supply 7 via the distribution board 3, and operates by being supplied with power from the system power supply 7. In the example shown in FIG. 1, one electrical load 4 is connected to one branch circuit 35, but a plurality of electrical loads 4 may be connected to one branch circuit 35.

Furthermore, the detached house 2 is provided with a solar power generation device 52 and a power storage device 53 as distributed power sources. The solar power generation device 52 and the power storage device 53 are connected to the distribution board 3 via the power conditioner 51. The branch part 31 is electrically connected.

The solar power generation device 52 supplies the electric power generated by receiving sunlight to the electric load 4 through the distribution board 3 to thereby supply the electric power (purchased power) from the system power supply 7 to the electric load 4. Amount). Moreover, the solar power generation device 52 can also perform power selling that causes the surplus generated power to flow backward to the system power supply 7.

The power storage device 53 is charged by being supplied with power from the system power supply 7 and the solar power generation device 52 as an electric load. Further, the power storage device 53 supplies discharge power to the electric load 4 through the distribution board 3.

In addition, the distribution board 3 includes a power measuring unit 32 that measures the amount of power that is supplied from the system power supply 7 to the electrical load 4. The power measurement unit 32 includes a current measurement unit 321 configured by, for example, a Rogowski coil, a current transformer, and the like, and is supplied from the system power supply 7 to the electric load 4 using the measurement result of the current measurement unit 321. Measure power consumption (purchased power consumption) as power consumption. The current measuring unit 321 measures the current supplied to the distribution board 3 from the system power supply 7 by measuring the current flowing through the main circuit 34. Then, the power measuring unit 32 is based on the measurement result of the current measuring unit 321, and the integrated power amount supplied from the system power supply 7 to the distribution board 3 every predetermined period (for example, every hour, every 30 minutes, etc.). (Purchased power amount) is calculated. In the present embodiment, the amount of electric power (purchased electric power) supplied from the system power supply 7 to the electric load 4 is used as the amount of electric power used. It may be used as a quantity.

Furthermore, the current measuring unit 321 is configured to be able to individually measure the current flowing in each branch circuit 35 as well as the main circuit 34. And the electric power measurement part 32 can also measure the electric energy consumption of the electric load 4 for every branch circuit 35, the electric power generation amount and electric power sale electric energy of the solar power generation device 52, and the charge electric energy amount and the electric discharge electric energy of the electrical storage apparatus 53 here. It is configured.

Next, the configuration of the power management apparatus 1 and the power management system 10 will be described. The power management apparatus 1 according to the present embodiment mainly includes an acquisition unit 11, a calculation unit 12, a power storage unit 13, a unit price storage unit 14, and a notification unit 15. The power management system 10 includes a power management device 1, a notification unit 6, and a power measurement unit 32 as main components.

The acquisition unit 11 acquires data on the amount of power used supplied from the system power supply 7 to the electrical load 4. Specifically, the acquisition unit 11 is configured to be communicable with the power measurement unit 32, and acquires data on the amount of power used measured by the power measurement unit 32 (data on the amount of purchased power for each predetermined period). Then, the acquisition unit 11 stores the acquired purchased power amount data in the power storage unit 13. The power storage unit 13 also stores data on the purchased power amount in the past (for at least one month). The purchased power amount data stored in the power storage unit 13 is sequentially deleted from the old data. The

Furthermore, the acquisition unit 11 also acquires data on the power consumption amount of the electric load 4, the power generation amount of the solar power generation device 52, the charge power amount and the discharge power amount of the power storage device 53 from the power measurement unit 32, and the power storage unit 13. Accordingly, the power storage unit 13 stores a data table as shown in Table 2 below.

In addition, the numerical value in Table 2 is an example, and each item is not limited to this numerical value. In Table 2, the power consumption amounts of the plurality of electric loads 4 are collectively displayed as one. Actually, the power consumption amounts of the electric loads 4 for each branch circuit 35 are stored.

In the unit price storage unit 14, the amount of power that is switched according to the amount of power (purchased power amount) supplied to the electrical load 4 from the start of the unit period, in the charge system data in the stage fee system. Data on the unit price of charges is stored (see Table 1).

The calculation unit 12 includes a power amount calculation unit 121 and an average value calculation unit 122.

The power amount calculation unit 121 is supplied from the system power supply 7 to the electric load 4 from the start of the unit period, using the power consumption data (purchased power amount for each predetermined period) acquired by the acquisition unit 11. The amount of electric power (purchased electric energy) is calculated. That is, the electric energy calculation unit 121 uses the purchased electric energy data stored in the electric power storage unit 13 to calculate the purchased electric energy from the start (one day of this month) of the unit period (this month) to which the present belongs. An integrated value (hereinafter referred to as measured electric energy W1 [kWh]) is calculated.

The average value calculation unit 122 uses the data of the measured electric energy W1 calculated by the electric energy calculation unit 121 and the unit price data stored in the unit price storage unit 14, and uses the unit price for the current period (this month). The average value (average unit price) is calculated. Specifically, the average value calculation unit 122 calculates the electric energy charge from the start of the unit period (the first day of this month) (hereinafter referred to as the actual charge Y1 [yen]), the measured electric energy W1 data, and the unit price. Calculation is performed using the unit price data stored in the storage unit 14. For example, when the actually measured electric energy W1 is 150 [kWh], the actually measured fee Y1 is calculated by the following formula (1) (see Table 1).

Y1 = 120 × A1 + (150−120) × A2 (1)
Then, the average value calculation unit 122 divides the measured charge Y1 by the measured power amount W1 to calculate the current average charge unit price (hereinafter referred to as measured unit price B1 [yen]) in the unit period (measured unit price B1). = Measurement fee Y1 / measurement electric energy W1).

The notification unit 15 is configured to be able to communicate with the notification unit 6 including, for example, a HEMS (Home Energy Management System) monitor. Then, the notification unit 15 notifies (transmits) the notification unit 6 of the information of the measured unit price B1 calculated by the average value calculation unit 122.

The notification unit 6 receives the information (information on the actual unit price B1) transmitted by the notification unit 15 and displays the received information (information on the actual unit price B1) on the screen. Then, the user views the information of the measured unit price B1 displayed on the screen of the notification unit 6, so that the average unit price, that is, the measured unit price, which is the power amount per unit of purchased power amount 1 [kWh] in the unit period. However, you can recognize how much. In addition, the alerting | reporting part 6 may be comprised with general purpose terminals, such as a smart phone, a tablet terminal, and a television other than dedicated terminals, such as a HEMS monitor.

As described above, the power management apparatus 1 of the present embodiment includes the acquisition unit 11, the power amount calculation unit 121, the unit price storage unit 14, the average value calculation unit 122, and the notification unit 15. The acquisition unit 11 acquires data on the amount of power used (purchased power amount) supplied from the system power supply 7 to the electric load 4. The power amount calculation unit 121 uses the power usage amount (purchased power amount) data acquired by the acquisition unit 11 to calculate the integrated power amount (measured power amount W1) supplied to the electric load 4 from the start of the unit period. calculate. The unit price storage unit 14 stores data on the unit price of the electric energy charge that is switched according to the magnitude of the integrated electric energy (measured electric energy W1) supplied to the electric load 4 from the start of the unit period. The average value calculation unit 122 uses the data of the integrated power amount (measured power amount W1) calculated by the power amount calculation unit 121 and the unit price data stored in the unit price storage unit 14 to calculate the unit price for the unit period. An average value (actual unit price B1) is calculated. The notification unit 15 notifies the information on the average value (actual unit price B1) of the charge unit price calculated by the average value calculation unit 122.

Moreover, the power management system 10 of the present embodiment includes the power management device 1, the notification unit 6, and the power measurement unit 32. The alerting | reporting part 6 receives the information (information of measured unit price B1) which the notification part 15 notifies, and alert | reports this received information (information of measured unit price B1). The power measuring unit 32 measures the amount of power used (purchased power amount) supplied from the system power supply 7 to the electric load 4.

That is, the power management apparatus 1 and the power management system 10 having the above-described configuration can notify the average value of the unit price of charge (actually measured unit price B1) in the unit period. Thereby, even when the user adopts the stage fee system for the charge plan, the user can easily obtain the average value of the charge unit price (measured unit price B1) in the unit period without calculating the user himself / herself. it can. In addition, the power management apparatus 1 can prompt the user to be aware of power saving in order to suppress the measured unit price B1 by notifying the measured unit price B1.

Furthermore, the power management apparatus 1 is configured to calculate and notify not only the average unit price at the present time of the unit period (actual unit price B1) but also the average unit price at the completion of the unit period.

The arithmetic unit 12 uses the data of the power consumption (purchased power amount) stored in the power storage unit 13 to predict the average value of the unit price (average unit price) at the completion of the unit period to which the present belongs. A value prediction unit 123 is provided.

The average value prediction unit 123 first predicts the purchased power amount from the present to the end of the unit period (end of month). Then, the average value predicting unit 123 adds the predicted purchased power amount and the actually measured power amount W1 calculated by the power amount calculating unit 121, from the start (start of the month) to the end (end of the month) of the unit period. An integrated value of the purchased electric energy (hereinafter referred to as predicted electric energy W2 [kWh]) is calculated. The average value predicting unit 123 predicts the predicted power amount W2 using the past purchased power amount data (for example, for the past one month) stored in the power storage unit 13. As a prediction method of the predicted power amount W2, for example, a least square method or the like is used. In addition, the prediction unit uses only the data of the same day of the week as the day of prediction of the past purchased power amount data, or increases the weight of the data of the same day of the week as the day of prediction to increase the predicted power You may comprise so that the quantity W2 may be estimated. Moreover, you may comprise so that the data of the electric power generation amount of the solar power generation device 52 may be reflected in prediction of the prediction electric energy W2. Note that the prediction method of the predicted power amount W2 is not limited to the above, and other methods may be used.

Then, the average value prediction unit 123 calculates a power charge at the end of the unit period (end of month) (hereinafter referred to as a predicted charge Y2 [yen]) using the calculated predicted power W2. For example, when the predicted power amount W2 is 320 [kWh], the predicted fee Y2 is calculated by the following formula (2) (see Table 1).

Y2 = 120 × A1 + (300−120) × A2 + (320−300) × A3 (2)
Next, the average value prediction unit 123 divides the calculated predicted charge Y2 by the predicted power amount W2, thereby obtaining an average charge unit price (hereinafter referred to as a predicted unit price B2 [yen]) at the end of the unit period (end of month). Calculate (predicted unit price B2 = predicted charge Y2 / predicted electric energy W2).

Then, the notification unit 15 notifies (sends) the information of the average value of the unit price (predicted unit price B2) at the completion of the unit period predicted by the average value prediction unit 123 to the notification unit 6. The alerting | reporting part 6 receives the information (information of estimated unit price B2) which the notification part 15 transmits, and displays the received information (information of estimated unit price B2) on a screen. Then, the user looks at the information of the predicted unit price B2 displayed on the screen of the notification unit 6, thereby predicting the average unit price, which is the power amount charge per purchased power amount 1 [kWh] at the completion of the unit period. You can recognize how much the value is.

As described above, the power management apparatus 1 of the present embodiment includes the power storage unit 13. The power storage unit 13 stores data on the power consumption (purchased power amount) acquired by the acquisition unit 11.

Moreover, the power management apparatus 1 of this embodiment includes an average value prediction unit 123. The average value predicting unit 123 predicts an average value (predicted unit price B2) of the unit price of the unit at the completion of the unit period using the data of the power consumption (purchased power amount) stored in the power storage unit 13. And the notification part 15 notifies the information of the average value (predicted unit price B2) of the charge unit price at the time of completion of the unit period which the average value prediction part 123 estimated.

That is, the power management apparatus 1 having the above configuration can notify the information on the average value of the unit price (predicted unit price B2) at the end of the unit period (at the end of the month) in response to a user request or periodically. . Thereby, the user can easily obtain the average value (predicted unit price B2) of the charge unit price at the end of the unit period (end of month) without the user himself / herself calculating. In addition, the power management apparatus 1 can prompt the user to be aware of power saving in order to suppress the predicted unit price B2 by notifying the predicted unit price B2.

Further, as shown in FIG. 2, the notification unit 6 may be configured to display a graph indicating the electric energy charge (actual charge Y1, predicted charge Y2) for a unit period. In FIG. 2, the horizontal axis indicates the date from the start (the beginning of the month) to the completion (the end of the month) in the unit period (one month), and the vertical axis indicates the electric energy charge. A solid line C1 indicates a change in the electric energy charge for the unit period, and a slope of the broken line C2 indicates the electric energy charge per day in the unit period. In the example shown in FIG. 2, the integrated value of the purchased electric energy reaches 120 [kWh] on the date D1, and the unit price of charge is switched from A1 to A2, and the integrated value of the purchased electric energy is changed to 300 [kWh] on the date D2. The charge unit price has switched from A2 to A3.

By displaying the graph as shown in FIG. 2, the user can easily recognize the prediction of the electric energy charge at the end of the month. In addition, by displaying the data of the electricity charge (actual charge Y1) in the past (for example, the previous month and the same month of the previous year), the difference in the electricity charge between this month and the past can be easily compared. The user can be further conscious of power saving.

Furthermore, the power management apparatus 1 is configured to predict and notify the unit price switching timing. The unit price switching timing is the timing at which the unit price is switched.

The calculation unit 12 includes a timing prediction unit 124 that predicts the unit price switching timing using the data of the power consumption (purchased power amount) stored in the power storage unit 13.

The timing prediction unit 124 predicts an increasing tendency of the purchased power amount using the past purchased power amount data stored in the power storage unit 13, and the purchased power amount from the start of the unit period is 120 [kWh. ], The switching timing (date) reaching 300 [kWh] is predicted. In addition, the method similar to the prediction direction of the prediction electric energy W2 by the average value prediction part 123 is used for prediction of the increase tendency of purchased electric energy. Further, the timing prediction unit 124 may be configured to obtain the switching timing using the predicted value of the predicted power amount W2 by the average value prediction unit 123.

Then, the notification unit 15 notifies (transmits) the notification unit 6 of information on the unit price switching timing predicted by the timing prediction unit 124. The notification unit 6 displays information (switching timing information) transmitted from the notification unit 15 on the screen. For example, the notification unit 6 displays a message “The price unit price will be the second stage on December 25”. Then, the user can recognize when the price unit price switching timing is predicted by viewing the information on the unit price switching timing displayed on the screen of the notification unit 6.

As described above, the power management apparatus 1 of this embodiment includes the timing prediction unit 124. The timing prediction unit 124 predicts the switching timing of the unit price using the data of the power consumption (purchased power amount) stored in the power storage unit 13. Then, the notification unit 15 notifies information about the switching timing of the unit price of the charge predicted by the timing prediction unit 124.

That is, the power management apparatus 1 having the above configuration can notify information on the switching timing of the unit price. Thereby, the user can easily recognize the switching timing of the charge unit price. In addition, the power management apparatus 1 can prompt the user to be aware of power saving by ending the unit period when the unit price is lower by notifying the information on the switching timing of the unit price. For example, when the prediction of the date (switching timing) when the purchased power amount reaches 300 [kWh] from the start of the unit period is one day before the end of the month, the user sets the purchased power amount at the end of the month to 300 [kWh]. Awareness to save electricity is encouraged.

Further, as shown in FIG. 3, the notification unit 6 may be configured to display a graph indicating a change in the electric energy charge relative to the purchased electric energy, and to display the switching timing on the graph. In FIG. 3, the horizontal axis indicates the purchased electric energy, and the vertical axis indicates the electric energy charge. Also, the solid line C3 shown in FIG. 3 indicates that the slope when the purchased power amount is 0 to 120 [kWh] is the unit price A1. The solid line C3 indicates that the inclination when the purchased electric energy is 120 to 300 [kWh] is the unit price A2, and the inclination when the purchased electric energy exceeds 300 [kWh] is the unit price A3. . The slope of the broken line C4 connecting the power charge (0 yen) at the start of the unit period (December 1) and the power charge at the end of the unit period (December 31) is the predicted unit price B2. Is shown.

In the example shown in FIG. 3, the current date is December 18, and the purchased power amount (measured power amount W1) from December 1 to December 18 is less than 120 [kWh]. . Further, on December 25, the predicted value of the purchased electric energy reaches 120 [kWh]. That is, December 25 is the switching timing predicted by the timing prediction unit 124, and the unit price of the charge is switched from A1 to A2. Moreover, the purchased electric energy (predicted electric energy W2) on December 31 is less than 300 [kWh].

By displaying the graph as shown in FIG. 3, the user can purchase not only the switching timing but also the switching timing and the remaining days until the completion of the unit period, and the purchased power when the current purchased power amount and the unit price are switched. The difference from the quantity can be easily recognized. Thereby, the power management apparatus 1 of this embodiment can further encourage the user to be aware of power saving. In addition, the graph shown in FIG. 3 allows the user to easily recognize what stage the unit price is at present.

Furthermore, the power management apparatus 1 is configured to notify the change of the unit price by changing the operating state of the electric load 4.

The power management apparatus 1 includes a setting unit 16 that sets control parameters for the electric load 4. The setting unit 16 notifies the operating state of the electrical load 4 by transmitting a setting signal for setting the control parameter of the electrical load 4 to the electrical load 4 before a predetermined period of the switching timing (for example, the day before the switching timing). Enter mode. Note that the timing at which the setting unit 16 transmits the setting signal is not limited to a predetermined period before the switching timing, and may be on the day of the switching timing or after the switching timing (for example, one day after the switching timing). The control parameter of the electric load 4 is a parameter used for controlling the electric load 4.

Here, at least a part of the plurality of electric loads 4 is configured to be able to communicate with the setting unit 16. When the electric load 4 configured to be communicable with the setting unit 16 receives the setting signal transmitted from the setting unit 16, the operation mode of the electric load 4 is controlled so that the operating state is different from the normal state. The parameter is set, and the notification mode for notifying the change of the unit price is set. The control parameters are, for example, the time from when the lighting switch is turned on in the lighting fixture to when the lighting of the light source starts, the illuminance of the lighting fixture, the set temperature of the air conditioner, and the on / off of the electric load 4. Examples of the operating state of the electric load 4 in the notification mode include the following.
-The time from when the lighting switch of the lighting fixture is turned on to when the light source starts to be turned on is made longer than usual.
Reduce the illuminance of the luminaire (light source) below the user's set value.
-Change the set temperature of the air conditioner from the user set value. For example, when the air conditioner is used for heating, the set temperature is set lower than the user set value, and when the air conditioner is used, the set temperature is set higher than the user set value.
・ If the air conditioner start switch is turned on, it will stop immediately after starting.
・ If the TV start switch is turned on, it will stop immediately after starting.
・ Display a message on the screen notifying the change of unit price when the TV is started.

As described above, the power management apparatus 1 of the present embodiment includes the setting unit 16 that sets the control parameters of the electrical load 4. Then, the setting unit 16 sets the control parameter of the electric load 4 according to the switching timing predicted by the timing prediction unit 124.

Further, in the power management apparatus 1 of the present embodiment, the control parameter includes information for notifying the electric load 4 of the change of the unit price. Then, the setting unit 16 transmits the control parameter to the electric load 4. When the electric load 4 receives the control parameter, the electric load 4 notifies the change of the unit price.

That is, the power management apparatus 1 having the above configuration notifies the switching of the unit price by setting the control parameter so that the operating state of the electric load 4 is different from the normal state. Therefore, the user can recognize the change of the unit price without checking the screen of the notification unit 6 because the operation state of the electrical load 4 that is used on a daily basis is different from the normal state.

In order to reduce the power consumption of the electric load 4 (power consumed by the electric load 4) in the notification mode, the setting unit 16 sets the control parameter so that the power consumption is lower than that in the normal time. Is desirable. The setting unit 16 may be configured to set different control parameters for each unit price after switching. For example, different control parameters are set for the electric load 4 when the charge unit price is switched from A1 to A2 and when the charge unit price is switched from A2 to A3. As a result, the user can recognize the level at which the unit price of charges is switched. In addition, the operating state of the electric load 4 in the notification mode described above is an example, and the present invention is not limited to this.

As described above, in the power management apparatus 1 of the present embodiment, the control parameter differs for each unit price after switching at the switching timing.

In addition, the notification mode of the electric load 4 can be canceled by operating an operation switch provided in the notification unit 6. The user who has recognized that the unit price of the charge is switched according to the operating state of the electric load 4 in the notification mode confirms the switching timing displayed on the screen of the notification unit 6 and then uses the operation switch of the notification unit 6. Perform the release operation. By this release operation, a release signal is transmitted from the notification unit 6 to the setting unit 16 of the power management apparatus 1, and the setting unit 16 restores the control parameter set to the electric load 4 and releases the notification mode of the electric load 4. And return to normal operation. Thereby, the user can surely recognize the information displayed on the screen of the notification unit 6, and thus can more reliably recognize the change of the charge unit price.

The method for canceling the notification mode of the electric load 4 is not limited to the above. For example, the notification mode may be canceled by operating the electric load 4. In addition, the notification mode is canceled after a predetermined period (for example, one day) has elapsed or the number of notifications (for example, the number of times to stop immediately after the activation switch is turned on) is predetermined (for example, three times). It may be configured to.

Furthermore, the power management apparatus 1 is configured to notify a power saving advice for reducing the power consumption of the electric load 4. The power saving advice is advice for the user to reduce the power consumption of the electric load 4.

The power management apparatus 1 includes an advice creating unit 17 that creates power saving advice. The target value of the electric energy charge at the end of the unit period (at the end of the month) can be set for the advice creating unit 17, and the advice creating unit 17 creates the power saving advice so that the predicted fee Y2 is lower than the target value. .

The advice creating unit 17 creates a power saving advice when the predicted charge Y2 exceeds the target value. Specifically, the advice creating unit 17 uses the power consumption of the electrical load 4 for each branch circuit 35 stored in the power storage unit 13 to use the electrical load for each branch circuit 35 from the start of the unit period. 4 is calculated. The power storage unit 13 stores the power consumption amount of the electric load 4 connected to each branch circuit 35 and the type of the electric load 4 in association with each other. Then, the advice creating unit 17 creates a power saving advice for the type of electric load 4 having a large amount of power consumption. For example, when the power consumption of the air conditioner (heating) is relatively large, the advice creating unit 17 creates a power saving advice “Let's lower the set temperature of the air conditioner”.

And the notification part 15 notifies the alerting | reporting part 6 of the information of the power saving advice which the advice preparation part 17 produced at the time of the notification of the prediction unit price B2 or the notification of switching timing. As shown in FIG. 4, the notification unit 6 displays power saving advice on the screen. In the example illustrated in FIG. 4, a power saving advice and a switching timing notification message are displayed together with a graph indicating the switching timing.

The notification unit 15 notifies the notification unit 6 of the power consumption amount of the electric load 4 for each branch circuit 35 from the start of the unit period, and the notification unit 6 displays the ratio of the power consumption amount of the electric load 4 on the screen. Is displayed (see FIG. 4). Thereby, the user can easily recognize the electric load 4 having a large power consumption. In the example shown in FIG. 4, the ratio of the power consumption is displayed for air conditioners and lighting fixtures with large power consumption, and the power consumption is collectively displayed for other electrical loads 4 as other home appliances. is doing.

As described above, the power management apparatus 1 according to the present embodiment includes the advice creating unit 17 that creates the power saving advice for reducing the power consumption of the electric load 4. Then, the notification unit 15 notifies the information on the power saving advice created by the advice creation unit 17 according to the switching timing predicted by the timing prediction unit 124.

That is, the power management apparatus 1 having the above configuration can notify an appropriate power saving advice based on the power consumption of the electric load 4. Thereby, since the user can recognize how to save power, the power saving consciousness is further improved and it becomes easy to move to power saving action.

In the above description, the target value for the predicted charge Y2 is set, but the target value for the predicted power amount W2 or the predicted unit price B2 is set so that the predicted power amount W2 or the predicted unit price B2 is less than the target value. It may be configured to create power saving advice.

The above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and various modifications can be made according to design and the like as long as the technical idea according to the present invention is not deviated from this embodiment. Of course, it can be changed.

Claims

An acquisition unit for acquiring data of power consumption supplied from the system power supply to the electrical load;
Using the power consumption data acquired by the acquisition unit, a power amount calculation unit that calculates an integrated power amount supplied to the electrical load from the start of a unit period;
A unit price storage unit that stores unit price data of a power charge that switches according to the magnitude of the integrated power supplied to the electrical load from the start of the unit period;
An average value calculation unit that calculates an average value of the unit price for the unit period using the integrated power amount data calculated by the power amount calculation unit and the unit price data stored in the unit price storage unit. When,
A power management apparatus comprising: a notification unit that notifies information on an average value of the unit price calculated by the average value calculation unit.
The power management apparatus according to claim 1, further comprising: a power storage unit that stores data on the power usage acquired by the acquisition unit.
An average value prediction unit that predicts an average value of the unit price of charges at the time of completion of the unit period using the data of the power consumption stored in the power storage unit,
The power management apparatus according to claim 2, wherein the notification unit notifies information on an average value of the unit price at the completion of the unit period predicted by the average value prediction unit.
A timing prediction unit for predicting the switching timing of the unit price using the data of the power usage stored in the power storage unit;
The power management device according to claim 2, wherein the notification unit notifies information on a switching timing of the unit price of charge estimated by the timing prediction unit.
A setting unit for setting a control parameter of the electric load;
The power management apparatus according to claim 4, wherein the setting unit sets the control parameter of the electric load according to the switching timing predicted by the timing prediction unit.
The control parameter includes information for notifying the electric load of the change of the unit price of charge,
The setting unit transmits the control parameter to the electric load,
The power management apparatus according to claim 5, wherein, when the electric load receives the control parameter, the electric load notifies the switching of the unit price.
The power management apparatus according to claim 5 or 6, wherein the control parameter is different for each unit price after switching at the switching timing.
An advice creating unit for creating power saving advice for reducing the power consumption of the electrical load;
8. The notification unit according to any one of claims 4 to 7, wherein the notification unit notifies the information on the power saving advice created by the advice creation unit according to the switching timing predicted by the timing prediction unit. The power management apparatus described.
A power management device according to any one of claims 1 to 8,
A notification unit for receiving the information notified by the notification unit and informing the received information;
An electric power management system comprising: an electric power measurement unit that measures the amount of electric power supplied from the system power supply to the electric load.