JP5705637B2 - Power control apparatus and power control method - Google Patents

Description

  The present invention is provided in a consumer having a distributed power source capable of supplying electric power, a storage battery storing electric power supplied from an electric power system or electric power supplied from a distributed power source, and a load device. The present invention relates to a power control apparatus to be controlled and a power control method.

  In recent years, a power control system including a distributed power source such as a solar cell or a storage battery is becoming widespread in power consumers such as ordinary households from the viewpoint of reducing environmental load (for example, see Patent Document 1). In such a power control system, the power generated by the solar battery can be supplied to a load device in the consumer, or sold (power sale) by causing the power system to reversely flow.

  In addition, in such a power control system, by using a storage battery, for example, if power stored in a storage battery is stored at night when the power charge is low or generated by a solar battery, the storage battery can be used in the daytime when the power charge is high. It is also possible to cover the power of the load equipment in the consumer by discharging the power, so that the power cost at the consumer can be reduced.

JP 2003-259551 A

  By the way, in the consumer, the driving | running state of a load apparatus differs with the case where a user is staying at home, and the case where it is absent for a long time, such as a trip or a business trip. However, in the power control system according to the related art, the storage battery is not controlled in consideration of the case where the user is absent for a long time.

  For this reason, in such a power control system, although the user has been absent for a long time, the power that should have been able to be sold while maintaining the remaining amount of the storage battery is reduced more than necessary, and conversely In some cases, when the user returns from a long absence due to excessive discharge, the power is insufficient and power with a high power charge is used. That is, in the related art, there is a problem that although the storage battery is provided, the control of the storage battery is not properly performed when the user is absent for a long time, and the utility is not sufficiently achieved.

  Therefore, the present invention has been made to solve the above-described problems, and in a consumer having a storage battery, it is possible to appropriately execute the control of the storage battery when the user is absent for a long period of time, thereby increasing the utility. An object is to provide a power control apparatus and a power control method.

  In order to solve the above-described problems, the present invention has the following features. First, the power control device according to the present invention is characterized by a distributed power source (for example, the solar cell 121 and the locking device 156) that can supply power, and power supplied from the power system (power system 10) or the distributed power source. A power control device (power) that is provided in a consumer (consumer 100) having a storage battery (storage battery 122) that stores supplied power and a load device (for example, the refrigeration device 153) and controls the power in the consumer A detection unit (long-term absence detection unit 231) that detects a long-term absence of a user who uses the load device in the consumer, and the detection unit detects the long-term absence of the user. The mode control unit (mode control unit 232) that sets the operation mode of the storage battery from the home mode to the absence mode, and the home mode when the absence mode is set. A storage amount setting unit (storage amount setting unit 233) for changing from a first target storage amount to be stored in the storage battery to a second target storage amount to be stored in the storage battery in the absence of a long period of time; A summary is provided with a storage battery control unit (storage battery control unit 234) that controls the storage amount of the storage battery based on the second target storage amount changed by the amount setting unit.

  A second feature of the power control apparatus according to the present invention is related to the first feature, wherein the storage amount setting unit is larger than the first target storage amount when set in the absence mode. The gist is to change to the target power storage amount.

  A third feature of the power control apparatus according to the present invention is related to the first feature, wherein the storage amount setting unit is smaller than the first target storage amount when set to the absent mode. The gist is to change to the target power storage amount.

  A fourth feature of the power control apparatus according to the present invention relates to the first to third features, and when the absence mode is set, the load device is operated using the power stored in the storage battery. The gist is to further include a load control unit (load control unit 235).

  A fifth feature of the power control apparatus according to the present invention is related to the fourth feature, wherein the load control unit can pretend to be at home of the user when set to the absent mode. The gist is to drive.

  A sixth feature of the power control apparatus according to the present invention is related to the fifth feature, wherein the load control unit can pretend to be at home of the user when the storage amount of the storage battery is equal to or less than a predetermined threshold value. The main point is to reduce the power consumption of load devices (for example, the lighting device 151 and the television 154).

  A seventh feature of the power control apparatus according to the present invention includes a distributed power source that can supply power, a storage battery that stores power supplied from the power system or power supplied from the distributed power source, and a load device. A power control method in a power control device provided in a consumer and controlling power in the consumer, the step of detecting a long-term absence of a user who uses the load device in the consumer; and the user When the long-term absence is detected, the step of setting the operation mode of the storage battery from the home mode to the absence mode, and the first target power storage to be stored in the storage battery when the home mode is set when the absence mode is set. And changing the storage amount of the storage battery based on the second target storage amount based on the second target storage amount to be stored in the storage battery when there is no long-term absence. And summarized in that and a step.

  ADVANTAGE OF THE INVENTION According to this invention, in the consumer who has a storage battery, the control of the storage battery at the time of a user's long-term absence can be performed appropriately, and the power control apparatus and power control method which can raise a profit can be provided. .

FIG. 1 is a schematic configuration diagram showing the configuration of the power control system according to the first embodiment of the present invention. FIG. 2 is a diagram illustrating a configuration of the power control apparatus according to the first embodiment of the present invention. FIG. 3 is a diagram illustrating an example of information stored in the storage unit of the power control apparatus according to the first embodiment of the present invention. FIG. 4 is a sequence diagram showing an operation of the power control apparatus according to the first embodiment of the present invention. FIG. 5 is a diagram illustrating an example of information stored in the storage unit of the power control apparatus according to the third embodiment of the present invention. FIG. 6 is a diagram illustrating an example of an operation pattern when the power control apparatus according to the third embodiment of the present invention operates the load device. FIG. 7 is a sequence diagram showing an operation of the power control apparatus according to the third embodiment of the present invention.

[First Embodiment]
Next, a first embodiment of the present invention will be described with reference to the drawings. Specifically, (1) the configuration of the power control system, (2) the configuration of the power control device, (3) the operation of the power control device, (4) the actions and effects will be described. In the description of the drawings in the following embodiments, the same or similar parts are denoted by the same or similar reference numerals.

(1) Configuration of Power Control System FIG. 1 is a schematic configuration diagram of a power control system 1 according to the present embodiment. The power control system 1 is provided in a consumer 100 such as a general household, and can perform power control of a load device in the consumer 100.

  As shown in FIG. 1, the power control system 1 includes a smart meter 110, a hybrid PCS 120, a solar battery 121, a stationary storage battery 122, a storage battery 123 mounted on an electric vehicle, a lighting device 151 as a load device, and an air conditioner 152. , A refrigerator 153, a television 154, a heat storage device 155, a locking device 156, and a power control device 200.

  The solar cell 121 receives sunlight and can generate DC power in accordance with the received sunlight. Note that the solar battery 121 constitutes a distributed power source that can supply power to the customer 100.

  The storage battery 122 can store the power supplied from the power system 10 or the power supplied from the solar battery 121. In the present embodiment, the stationary storage battery 122 and the storage battery 123 mounted on the electric vehicle are simply described as the storage battery 122. The heat storage device 155 is, for example, a heat pump or a water heater.

  The smart meter 110 is connected to the power grid 10 and to the home distribution line 400. Further, the smart meter 110 acquires the total power consumption that is the total power consumed by the load devices in the customer 100 and notifies the power control apparatus 200 of the total power consumption via the home communication line 500. be able to. The smart meter 110 can also notify the energy management system (hereinafter referred to as EMS) 50 that controls the power of the customer group including the customer 100 via the wide area communication network 20. .

  The hybrid PCS 120 is connected to the domestic distribution line 400 and to the solar battery 121 and the storage battery 122 as a distributed power source. The hybrid PCS 120 is connected to the home communication line 500 and can communicate with the power control apparatus 200. The hybrid PCS 120 operates the solar battery 121 and the storage battery 122 in accordance with an instruction from the power control apparatus 200.

  Moreover, the hybrid PCS 120 can store the power generated by the solar battery 121 in the storage battery 122. Moreover, the hybrid PCS 120 can convert AC power supplied from the home distribution line 400 into DC power, and the DC power can also be stored in the storage battery 122.

  The hybrid PCS 120 can convert DC power generated by the solar battery 121 and DC power generated by the discharge of the storage battery 122 into AC power and send it to the home distribution line 400. The AC power sent to the home distribution line 400 is used in the lighting device 151, the air conditioner 152, the refrigeration device 153, the television 154, the heat storage device 155, and the locking device 156 as appropriate, or reverse to the power system 10. It becomes tidal power.

  The lighting device 151, the air conditioning device 152, the refrigeration device 153, the television 154, the heat storage device 155, and the locking device 156 as load devices are connected to the home distribution line 400 and to the home communication line 500. These load devices operate according to the control of the power control apparatus 200.

  The power control device 200 communicates with the smart meter 110, the hybrid PCS 120, the lighting device 151, the air conditioning device 152, the refrigeration device 153, the television 154, the heat storage device 155, and the locking device 156 via the home communication line 500. The communication may be wireless communication or wired communication.

  Further, the power control apparatus 200 is connected to the EMS 50 via the wide area communication network 20, receives charge information indicating the power charge of the power supplied from the power system 10 from the EMS 50, and based on the charge information. Thus, the operation of the load device and the hybrid PCS 120 in the power control system 1 can be controlled.

  In the present embodiment, the above-described rate information is assumed to be rate information used in a rate form called TOU (Time of Use) that changes the power rate according to the power demand of the power system 10. Charge information used in a charge form called RTP (Real Time Pricing). Moreover, the power control apparatus 200 according to the present embodiment is assumed to be an apparatus referred to as HEMS (Home Energy Management System).

(2) Configuration of Power Control Device Next, the configuration of the power control device 200 according to the present embodiment will be specifically described with reference to FIG. As illustrated in FIG. 2, the power control device 200 includes a communication unit 210, a storage unit 220, and a processing unit 230.

  The communication unit 210 is connected to the home communication line 500 and the wide area communication network 20. The communication unit 210 communicates with each device such as a load device via the home communication line 500. The communication unit 210 can also communicate with the EMS 50 via the wide area communication network 20. When the communication unit 210 acquires charge information indicating the power charge of the power supplied from the power system 10 from the EMS 50, the communication unit 210 outputs the charge information to the processing unit 230.

  The storage unit 220 stores a program executed by the processing unit 230 and is used as a work area during execution of the program by the processing unit 230. As illustrated in FIG. 3, the storage unit 220 according to the present embodiment stores an operation mode, a load device to be operated, and a target power storage amount in association with each other.

  The operation mode is information indicating the operation state of the load device and the storage battery 122. In the present embodiment, a home mode and an absent mode are provided as operation modes. The home mode is an operation mode when the user of the load device is at home in the customer 100. On the other hand, the absence mode is an operation mode in the case where the user has not been in the customer 100 for a long time. The home mode or the absence mode is changed by the processing unit 230 described later.

  The load device to be operated indicates identification information of the load device to be operated corresponding to the operation mode. In this embodiment, all the load devices in the customer 100 are stored in association with the home mode. Further, the refrigeration device 153 and the locking device 156 are stored in association with the absence mode. Note that more load devices may be stored in association with the absence mode.

  The target power storage amount indicates a power storage amount that should be stored in the storage battery 122. The target power storage amount is a value serving as a reference when controlling discharge and power storage in the storage battery 122. Specifically, the target power storage amount is the minimum power storage amount that is maintained when electric power is stored and discharged in the storage battery 122. In the present embodiment, as the target power storage amount, a first target power storage amount (AkWh) associated with the home mode and a second target power storage amount (BkWh) stored in association with the absent mode are provided. . In the present embodiment, the second target power storage amount has a larger power storage value than the first target power storage amount. That is, the first target power storage amount and the second target power storage amount satisfy the relationship of first target power storage amount (AkWh) <second target power storage amount (BkWh).

  The first target power storage amount is the power storage amount that should be stored in the storage battery 122 when the user is at home, and is determined based on the daily power consumption when the load device is operated by the user. preferable. For example, when storing nighttime power with a low power rate in the storage battery 122, the first target power storage amount is the amount of power consumed by a load device operated in the daytime (for example, 13:00 to 15:00) when the next day's power rate is high. It is preferable that

  This is due to the following reason. That is, by storing the electric power of the first target power storage amount in the storage battery 122, it is possible to cover the power of the load device during the daytime period when the power rate is high using the electric power stored in the storage battery 122. Because it becomes. In the present embodiment, the time when the user is at home indicates a period other than when the long-term absence of the user is detected by the processing unit 230 described later.

  Moreover, it is preferable that the second target power storage amount is determined based on the power consumption of the load device that is consumed when the user returns from a long absence. Here, it is preferable that the said power consumption is the maximum power consumption at the time of driving the load apparatus in the consumer 100. FIG.

  This is due to the following reason. For example, a user who has installed a heat pump water heater boils and stores hot water during a nighttime period when the power rate is low, but generally stops boiling when the user is absent for a long period of time. For this reason, when the user returns home from a long absence during the day, the electric power stored in the storage battery 122 can be used to supply hot water.

  The processing unit 230 performs processing according to a program stored in the storage unit 220. The processing unit 230 includes a long-term absence detection unit 231, a mode control unit 232, a storage amount setting unit 233, a storage battery control unit 234, and a load control unit 235.

  The long-term absence detector 231 detects the long-term absence of a user who uses the load device in the customer 100 based on the absence information acquired via the communication unit 210. Here, the long-term absence detection unit 231 according to the present embodiment can detect the long-term absence of the user by four methods. Four methods will be described below.

  In the first method, the long-term absence detecting unit 231 determines whether the long-term absence is based on whether the locking performed when the user goes out is inside or outside the customer 100 and the elapsed time after the locking. Is detected. Specifically, the long-term absence detection unit 231 acquires from the locking device 156 locking information indicating whether the customer 100 is locked inside or outside as the absence information.

  The long-term absence detection unit 231 determines whether locking has been performed outside based on the locking information. The long-term absence detection unit 231 stores the locking time when it is determined that locking is performed from the outside. Further, if the long-term absence detection unit 231 does not receive the unlocking notification from the locking device 156 even after a predetermined period (for example, 24 hours) has elapsed from the locking time, the user is absent for a long time. Is detected.

  In the second method, the long-term absence detection unit 231 detects long-term absence based on position information transmitted from a terminal device such as a mobile phone owned by the user. Specifically, the long-term absence detection unit 231 acquires position information transmitted from the terminal device owned by the user as the absence information via the wide area communication network 20.

  The long-term absence detector 231 calculates the distance based on the location information (address information) of the customer 100 stored in advance and the location information transmitted from the terminal device. The long-term absence detection unit 231 determines whether the calculated distance is equal to or greater than a predetermined distance (for example, 500 km), and when it is determined that the calculated distance is equal to or greater than the predetermined distance, it detects that the user is absent for a long time. .

  In the third method, the long-term absence detector 231 detects a long-term absence based on a change in power consumption in the customer 100. Specifically, the long-term absence detection unit 231 obtains the daily total power consumption measured by the smart meter 110 as absence information and stores it.

  In addition, the long-term absence detection unit 231 compares the total power consumption of the day acquired in the past every time new total power consumption is acquired. Specifically, the long-term absence detection unit 231 determines whether or not the new total power consumption is less than or equal to a predetermined power from the past total power consumption. Detect absence. The long-term absence detection unit 231 compares the total power consumption acquired on the same month or the total power consumption acquired on the same day when comparing the new total power consumption and the past total power consumption. May be.

  In the fourth method, the long-term absence detector 231 detects the long-term absence of the user based on an input operation from the user. Specifically, the long-term absence detection unit 231 is long-term absence by a user with respect to an input unit (not shown) provided in the power control device 200 and an input unit (not shown) provided in the locking device 156. When a certain input operation is performed, this input information is acquired as absence information. The long-term absence detecting unit 231 detects that the user is absent for a long time when the absence information is acquired.

  As described above, the long-term absence detection unit 231 detects that the user is absent for a long time by any one of the four methods described above. The long absence may be detected by combining the four methods described above. In addition to the method described above, various methods may be used such as detecting a long-term absence of the user using a human sensor or the like.

  When the long-term absence detection unit 231 detects the long-term absence of the user, the mode control unit 232 sets the operation mode indicating the operation state of the storage battery 122 from the home mode to the absence mode. Further, the mode control unit 232 notifies the storage amount setting unit 233 and the load control unit 235 that the absence mode has been set.

  When the absence mode is set, the storage amount setting unit 233 stores power in the storage battery 122 when the user is away from the first target storage amount that should be stored in the storage battery 122 when the user is at home. 2 Change to the target power storage amount. Specifically, when the storage amount setting unit 233 receives a notification from the mode control unit 232 that the absence mode is set, the storage target setting unit 233 refers to the storage unit 220 and stores the second target storage amount associated with the absence mode. Get the quantity.

  At this time, the power storage amount setting unit 233 changes the target power amount to be stored in the storage battery 122 to the second target power storage amount that is larger than the first target power storage amount, and performs the storage battery control on the changed second target power storage amount. Notification to the unit 234.

  When discharging power from the storage battery 122, the storage battery control unit 234 may discharge the second target power storage amount as a lower limit value. That is, when discharging the power from the storage battery 122, the storage battery control unit 234 may instruct the hybrid PCS 120 to stop the discharge when the amount is less than the second target storage amount. In this case, it is possible to secure the second target power storage amount in the storage battery 122.

  The storage battery control unit 234 controls the storage battery 122 based on the second target storage amount changed by the storage amount setting unit 233. Specifically, when storing power in the storage battery 122, the storage battery control unit 234 controls the hybrid PCS 120 to store the second target storage amount as the minimum storage amount. At this time, the storage battery control unit 234 sets the hybrid PCS 120 to store in the storage battery 122 the power that is not more than a predetermined charge or the power generated by the solar battery 121 among the power supplied from the power system 10. Control.

  When the load control unit 235 receives a notification from the mode control unit 232 that the absence mode is set, the load control unit 235 refers to the storage unit 220 and acquires the identification information of the load device to be operated that is stored in association with the absence mode. To do. The load control unit 235 instructs only the load device corresponding to the identification information to be operated and stops the operation for other load devices.

  Further, the load control unit 235 operates the load device using the power stored in the storage battery 122. In this case, the load control unit 235 acquires the amount of electricity stored in the storage battery 122 and controls the operation of the load device according to the amount of electricity stored. For example, the load control unit 235 normally operates the refrigeration device 153 and the locking device 156 when the storage amount of the storage battery 122 is equal to or greater than the second target storage amount, and refrigeration when the storage amount is less than the second target storage amount. By performing intermittent operation such as increasing the refrigeration temperature of the apparatus 153 or temporarily stopping the apparatus 153, power consumption is suppressed.

(3) Operation of Power Control Device Next, the operation of the power control device 200 will be described with reference to FIG. Specifically, the operation when the power control apparatus 200 changes from the home mode to the absent mode will be described. FIG. 4 is a sequence diagram showing the operation of the power control apparatus 200.

  First, in step S11, in the power control apparatus 200, the mode control unit 232 sets the home mode. In addition, the storage battery control unit 234 controls the storage battery 122 based on the first target storage amount.

  In step S <b> 12, the long-term absence detection unit 231 acquires the absence information received by the communication unit 210.

  In step S <b> 13, the long-term absence detection unit 231 determines whether the user of the load device is absent for a long time based on the absence information. Note that the long-term absence detection unit 231 repeats the operations of steps S12 to S13 when it is determined that the user is not long-term absence.

  In step S14, when the long-term absence detection unit 231 determines that the user is absent for a long time, the mode control unit 232 sets the operation mode from the home mode to the absence mode and changes to the absence mode. Notification is made to the storage amount setting unit 233 and the load control unit 235.

  In step S15, upon receiving the notification from the mode control unit 232, the storage amount setting unit 233 refers to the storage unit 220 and extracts the second target storage amount stored in association with the absent mode. The storage amount setting unit 233 notifies the storage battery control unit 234 of the extracted second target storage amount and instructs to change the storage amount of the storage battery from the first target storage amount to the second target storage amount.

  In step S <b> 16, the storage battery control unit 234 controls the operation of the storage battery 122 based on the second target storage amount notified from the storage amount setting unit 233. Specifically, when storing the storage battery 122, the storage battery control unit 234 controls the hybrid PCS 120 so as to store power equal to or greater than the second target storage amount.

  More specifically, the storage battery control unit 234 acquires fee information transmitted from the EMS 50 via the communication unit 210. The storage battery control unit 234 instructs the hybrid PCS 120 to store the power from the power grid 10 in the storage battery 122 when the power charge indicated by the charge information is equal to or less than the charge threshold. Alternatively, the storage battery control unit 234 instructs the hybrid PCS 120 to store the power generated by the solar battery 121 in the storage battery 122.

  In this way, the storage battery control unit 234 controls the hybrid PCS 120 so that the storage battery 122 stores the power whose power rate is equal to or less than the charge threshold or the power generated by the solar battery 121 in the home mode. In addition, when discharging electric power from the storage battery 122, the storage battery control unit 234 may instruct the hybrid PCS 120 to discharge using the second target power storage amount as the lower limit value.

  In step S <b> 17, the load control unit 235 operates only the refrigeration device 153 and the locking device 156 stored in association with the absence mode, and stops the operation of other load devices. Note that the load control unit 235 preferably operates the refrigeration apparatus 153 and the locking apparatus 156 using the electric power stored in the storage battery 122.

  As described above, in the power control device 200, the home mode is changed to the absent mode, and the storage battery 122, the refrigeration device 153 as the load device, and the locking device 156 are controlled.

(4) Operation and Effect In the first embodiment described above, the power control apparatus 200 determines whether or not the user is absent for a long time, and when it is determined that the user is absent for a long time, the home mode is changed to the absent mode. To do. In addition, when the power control device 200 is set to the absent mode, the power storage device 122 changes the target power storage amount of the storage battery 122 from the first target power storage amount to the second target power storage amount, Perform discharge control. In addition, when the power control device 200 stores power in the storage battery 122, the power control apparatus stores power in the storage battery 122 that has a power charge equal to or less than the charge threshold or power generated by the solar battery 121. That is, the power control apparatus 200 stores less expensive power in the storage battery 122.

  Further, the second target power storage amount corresponding to the absence mode is larger than the first target power storage amount corresponding to the home mode. In other words, the power control apparatus 200 stores power in the storage battery 122 with a second target power storage amount that is larger than the first target power storage amount that should be stored when the user is at home, so that the user can stay away from a long-term absence. Electric power necessary for returning home and driving the load device can be stored in the storage battery 122 as much as possible.

  Here, when the user returns home from a long absence, it is assumed that a plurality of load devices such as the air conditioner 152, the heat storage device 155, and the television 154 are activated at a time. In particular, the heat storage device 155 requires more power than the normal operation to start.

  According to the power control apparatus 200 according to the present embodiment, even when a large amount of power is required when the user returns home from a long absence, the power is cheaper than the second target power storage amount stored in the storage battery 122. Can be used, so that power costs can be reduced.

  As described above, according to the power control apparatus 200 according to the present embodiment, the consumer having a storage battery can appropriately execute the control of the storage battery when the user is absent for a long period of time, thereby enhancing the utility.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. Specifically, (1) the configuration of the power control device, (2) the operation and effects will be described.

(1) Configuration of Power Control Device A configuration of the power control device 200 according to the present embodiment will be described. Here, in the power control apparatus 200 according to the first embodiment described above, when the absence mode is set, the storage amount setting unit 233 changes the second target storage amount larger than the first target storage amount. Was composed.

  In the power control apparatus 200 according to the present embodiment, the power storage amount setting unit 233 is configured to change to a second target power storage amount that is smaller than the first target power storage amount when the absence mode is set by the mode control unit 232. Has been. That is, in the present embodiment, the first target power storage amount and the second target power storage amount satisfy the relationship of the first target power storage amount A> the second target power storage amount B.

  Moreover, it is preferable that the 2nd target electrical storage amount which concerns on this embodiment is determined based on the power consumption of the load apparatus consumed while a user is absent for a long term. Specifically, the second target power storage amount is preferably determined based on the power consumption of the refrigeration apparatus 153 and the locking apparatus 156 stored in the storage unit 220 in association with the absence mode.

  Moreover, when storing the electric power in the storage battery 122, the storage battery control unit 234 preferably stores the second target storage amount as the upper limit value. That is, the storage battery control unit 234 may instruct the hybrid PCS 120 to stop the storage when the storage amount of the storage battery 122 becomes equal to or greater than the second target storage amount. This is due to the following reason. That is, by setting the second target power storage amount as the upper limit value during power storage, it is possible to actively sell power without storing the power generated by the solar battery 121.

(2) Operation and Effect In the power control apparatus 200 according to the present embodiment, when the storage amount setting unit 233 is set to the absent mode, the target storage amount of the storage battery 122 is changed from the first target storage amount to the second target storage amount. Change to The second target power storage amount is smaller than the first target power storage amount. In addition, when storing power in the storage battery 122, the storage battery control unit 234 stores the second target storage amount as a target value.

  That is, according to the power control apparatus 200 according to the present embodiment, the electric power generated from the solar battery 121 can be obtained by reducing the electric power stored in the storage battery 122 compared to when the user is away from home for a long period of time. Since the power system 10 can reversely flow (sell power) as much as possible, the power generated by the solar cell 121 is actively sold, and the overall purchase and sale of power from the power system 10 are comprehensive. Power costs can be reduced.

  As described above, also in the power control apparatus 200 according to the present embodiment, it is possible to appropriately execute the control of the storage battery when the user is absent for a long period of time, thereby enhancing the utility.

[Third Embodiment]
Next, a third embodiment of the present invention will be described. Specifically, (1) the configuration of the power control device, (2) the operation of the power control device, and (3) the action and effect will be described.

(1) Configuration of Power Control Device The power control device 200 according to the present embodiment further includes a crime prevention function. Specifically, in the power control apparatus 200 according to the present embodiment, as illustrated in FIG. 5, the storage unit 220 has an operation pattern, identification information for identifying a specific load device, and an operation for driving the specific load device. The time is associated and stored.

  In FIG. 5, the lighting device 151 and the television 154 are exemplified as specific load devices that can make the user stay home. This is due to the following reason. This is because these specific load devices are load devices that can make the user's home appear visually or audibly when viewing the inside of the customer 100 from the outside of the customer 100. Note that any load device (for example, a radio) may be used as long as it is a load device that can visually or audibly make the user feel at home.

  Moreover, in this embodiment, the 1st operation pattern and the 2nd operation pattern in which the power consumption of a load apparatus is smaller than a 1st operation pattern are provided as an operation pattern. Specifically, the storage unit 220 stores the first operation pattern, the illumination device 151 and the television 154, and the operation times t10 to t20 in association with each other, and the second operation pattern, the illumination device 151 and the television 154, and the like. The operation times t10 to t11 and t12 to t20 are stored in association with each other.

  Here, the operation times t10 to t11 and t12 to t20 corresponding to the second operation pattern are shorter than the operation times t10 to t20 corresponding to the first operation pattern. Note that the operation times t10 to t20 corresponding to the first operation pattern and the operation times t10 to t11 and t12 to t20 corresponding to the second operation pattern make the user's home more realistic. It is preferable to determine based on the time when the lighting device 151 and the television 154 are operated at home.

  In addition, when the mode control unit 232 sets the absence mode, the load control unit 235 according to the present embodiment drives a load device that can make the user stay home. Specifically, when the load control unit 235 receives a notification that the absence mode is set, the load control unit 235 refers to the storage unit 220, and the lighting device 151 and the television 154 corresponding to the first operation pattern, and the operation time t10 to t10. t20 is specified.

  In addition, the load control unit 235 instructs the lighting device 151 and the television 154 to drive during the operation time t10 to t20. In addition to the refrigeration device 153 and the locking device 156, the load control unit 235 includes a lighting device 151 that can make the user's home appear in a pseudo manner, as shown in the first and second embodiments described above. Driving the TV 154.

  Further, the load control unit 235 operates the load device described above using the electric power stored in the storage battery 122. When the amount of power stored in the storage battery 122 is equal to or less than the predetermined threshold, the load control unit 235 operates the lighting device 151 and the television 154 based on the second operation pattern to suppress power consumption.

  Specifically, the load control unit 235 periodically acquires the amount of power stored in the storage battery 122. When the storage amount of the storage battery 122 is equal to or less than the predetermined threshold, the load control unit 235 operates the lighting device 151 and the television 154 according to the second operation pattern as illustrated in FIG. That is, when the load control unit 235 operates the load device according to the second operation pattern, the operation period is intermittent and the operation period is shortened, so that the load control unit 235 operates the load device according to the first operation pattern. Operate to reduce power consumption.

(2) Operation of Power Control Device Next, the operation of the power control device 200 according to the present embodiment will be described with reference to FIG. Specifically, the operation when driving the lighting device 151 and the television 154 that can make the user stay home when the load control unit 235 is set to the absence mode will be described. The following operation is the operation in step S17 in FIG.

  In step S101, when the load control unit 235 is set to the absence mode, the load control unit 235 refers to the storage unit 220, and as the operation pattern, the illumination device 151 and the television set 154 stored in association with the first operation pattern, and the operation time t10 to t20 are specified.

  The load control unit 235 instructs the lighting device 151 and the television 154 to drive during the period indicated by the operation times t10 to t20. At this time, the load control unit 235 operates the lighting device 151 and the television 154 using the power stored in the storage battery 122.

  In step S <b> 102, the load control unit 235 acquires the amount of power stored in the storage battery 122 from the hybrid PCS 120.

  In step S103, the load control unit 235 determines whether or not the charged amount is equal to or less than a predetermined threshold value. Here, the predetermined threshold is a value that is set larger by a predetermined charged amount than the lower limit value of the electric power stored in the storage battery 122.

  For example, when the lower limit value of the storage battery 122 is the second target power storage amount, the predetermined threshold is a value that is set larger than the second target power storage amount by the predetermined power storage amount. On the other hand, when the lower limit value of the storage battery 122 is a value at which the capacity of the storage battery 122 becomes zero, the predetermined threshold value is a value that is set larger by a predetermined amount of charge from the value at which the capacity becomes zero. In addition, when it determines with the load control part 235 not being less than a predetermined threshold value, the operation | movement of step S132 thru | or S133 is repeated.

  In step S104, when the stored amount of the storage battery 122 is equal to or less than the predetermined threshold, the load control unit 235 operates the lighting device 151 and the television 154 based on the second operation pattern to suppress power consumption. Specifically, the load control unit 235 changes from the operation times t10 to t20 corresponding to the first operation pattern to the operation periods indicated by the operation times t10 to t11 and t12 to t20 corresponding to the second operation pattern, The lighting device 151 and the television 154 are operated. That is, the load control unit 235 suppresses power consumption by shortening the operation period.

  In the present embodiment, the first operation pattern is changed to the second operation pattern, so that the operation period is shortened and the power consumption is suppressed, but by reducing the load equipment to be operated, You may suppress power consumption.

(3) Operation and Effect In the power control device 200 according to the present embodiment, when the absence mode is set, the load control unit 235 operates a specific load device such as the lighting device 151 or the television 154 that makes the user stay home. Can be made. According to such a power control device 200, it is possible to enhance the crime prevention function when the user is absent for a long time.

  In addition, since the power control device 200 operates the lighting device 151 and the television 154 using the power stored in the storage battery 122, the power control device 200 does not use the power from the power system 10 and suppresses the power cost, Function can be enhanced.

  Further, in the power control device 200, when the amount of power stored in the storage battery 122 is equal to or less than a predetermined threshold, the load device can be operated based on the second operation pattern and power consumption can be suppressed. Considering this, wasteful power consumption can be suppressed.

[Other Embodiments]
As mentioned above, although this invention was described by embodiment, it should not be understood that the description and drawing which form a part of this indication limit this invention. From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art.

  For example, in the above-described embodiment, the solar cell 121 has been described as an example of the distributed power source. However, the present invention can be similarly applied to a case where another power source such as a wind power generator is used.

  In the above-described embodiment, the function of the power control device 200 may be provided in the hybrid PCS 120 or the smart meter 110.

  In the above-described embodiment, the function of the power control apparatus 200 has been described by taking as an example a case where the function is applied to an apparatus called a HEMS (Home Energy Management System). However, the BEMS (Building and Energy Management System) is described. Etc.) and may be applied to various systems in smart grid technology.

  Further, the above-described embodiment and modification examples can be combined. Thus, it should be understood that the present invention includes various embodiments and the like not described herein. Therefore, the present invention is limited only by the invention specifying matters in the scope of claims reasonable from this disclosure.

DESCRIPTION OF SYMBOLS 1 ... Power control system, 10 ... Power system, 20 ... Wide area communication network, 50 ... EMS, 100 ... Consumer, 110 ... Smart meter, 120 ... Hybrid PCS, 121 ... Solar cell, 122 ... Storage battery, 151 ... Illumination device, 152 ... Air conditioner, 153 ... Refrigerator, 154 ... TV, 155 ... Heat storage device, 156 ... Locking device, 200 ... Power control device, 210 ... Communication unit, 220 ... Storage unit, 230 ... Processing unit, 231 ... Long-term absence detection , 232... Mode control unit, 233 .. storage amount setting unit, 234 .. storage battery control unit, 235 .. load control unit, 400 .. domestic distribution line, 500 .. domestic communication line

Claims (6)

Provided in a consumer having a distributed power source capable of supplying power, a power supplied from a power system or a storage battery storing power supplied from the distributed power source, and a load device, and controls the power in the consumer A power control device,
A detector for detecting the extended absence of the user who uses the load device by the demand wife,
When the long-term absence of the user is detected by the detection unit, a mode control unit that sets the operation mode of the storage battery from the home mode to the absence mode;
When the absence mode is set, the target power amount that should be stored in the storage battery should be stored in the storage battery from the first target storage amount that should be stored in the storage battery when at home, during a long-term absence. A storage amount setting unit for changing to a second target storage amount;
A storage battery control unit that controls the storage amount of the storage battery based on the second target storage amount changed by the storage amount setting unit ;
The power control apparatus characterized in that the second target power storage amount is larger than the first target power storage amount . Provided in a consumer having a distributed power source capable of supplying power, a power supplied from a power system or a storage battery storing power supplied from the distributed power source, and a load device, and controls the power in the consumer A power control device,
A detection unit for detecting a long-term absence of a user who uses the load device in the consumer;
When the long-term absence of the user is detected by the detection unit, a mode control unit that sets the operation mode of the storage battery from the home mode to the absence mode;
When the absence mode is set, the target power amount that should be stored in the storage battery should be stored in the storage battery from the first target storage amount that should be stored in the storage battery when at home, during a long absence. A storage amount setting unit for changing to a second target storage amount;
A storage battery control unit that controls the storage amount of the storage battery based on the second target storage amount changed by the storage amount setting unit;
A power control device comprising: a load control unit that operates the load device using the power stored in the storage battery when the absence mode is set. The power control device according to claim 2 , wherein the load control unit operates a load device capable of pretending to be the user's home when the absence mode is set. 4. The power control according to claim 3 , wherein the load control unit suppresses power consumption of a load device capable of pretending to be the user at home when a storage amount of the storage battery is equal to or less than a predetermined threshold. apparatus. Provided in a consumer having a distributed power source capable of supplying power, a power supplied from a power system or a storage battery storing power supplied from the distributed power source, and a load device, and controls the power in the consumer A power control method in a power control apparatus,
Detecting the extended absence of the user who uses the load device by the demand wife,
When the long-term absence of the user is detected, the operation mode of the storage battery is set from the home mode to the absence mode;
When the absence mode is set, the target power amount that should be stored in the storage battery should be stored in the storage battery from the first target storage amount that should be stored in the storage battery when at home, during a long-term absence. Changing to the second target charged amount;
Controlling the storage amount of the storage battery based on the second target storage amount ,
The power control method, wherein the second target power storage amount is larger than the first target power storage amount .   Provided in a consumer having a distributed power source capable of supplying power, a power supplied from a power system or a storage battery storing power supplied from the distributed power source, and a load device, and controls the power in the consumer A power control method in a power control apparatus,
  Detecting a long-term absence of a user who uses the load device in the consumer;
  When the long-term absence of the user is detected, the operation mode of the storage battery is set from the home mode to the absence mode;
  When the absence mode is set, the target power amount that should be stored in the storage battery should be stored in the storage battery from the first target storage amount that should be stored in the storage battery when at home, during a long-term absence. Changing to the second target charged amount;
  Controlling the storage amount of the storage battery based on the second target storage amount;
  And a step of operating the load device using the power stored in the storage battery when the absence mode is set.

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