JP6173382B2 - Control device, energy management system, control method and program - Google Patents

Description

  The present invention relates to a control device, an energy management system, a control method, and a program.

  In recent years, energy saving is increasingly required due to global warming or an increase in unit price of electric power. In addition, for example, at the time of a power failure due to a disaster, efficient use of power stored in advance is required. In response to such a request, a technique for suppressing the power consumed by the device by suppressing the operation of the device is known (see, for example, Patent Document 1).

  Patent Document 1 describes a technique for reducing the maximum demand power to the target power by setting the priority for each device and then stopping the operation of the device with the lower priority.

JP 2005-20924 A

  In the technique described in Patent Document 1, the priority is not changed unless the user intends to perform an operation. However, when the priority is fixed, for example, when the operation of a large number of devices with low priority is stopped together, the operation of the devices is excessively suppressed, which is not preferable.

  The present invention has been made under the above circumstances, and an object thereof is to prevent excessive suppression of the operation of equipment.

In order to achieve the above object, the control device of the present invention is a control device that controls a plurality of electrical devices, and the total power consumption of the entire system including the plurality of electrical devices and the power storage device exceeds a target upper limit value. case, among the plurality of electric devices, by reducing the power consumption of one lower priority controls the electrical equipment that is imparted electrical equipment than the priority of the total power consumption below the target upper limit value The control means includes a control means for limiting, and after the total power consumption is limited to a target upper limit value or less, the control means is controlled by changing a priority assigned to any one of the plurality of controlled devices. When the device is controlled to increase the power consumption of the controlled device within the range where the total power consumption is less than or equal to the target upper limit, and the priority of the controlled device is changed, the power stored in the power storage device Set the priority so that the amount is equal to or greater than the lower storage limit. Owl, priority is given to each of the plurality of operation modes of the electrical device.

  According to the present invention, after the total power consumption is limited to the target upper limit value or less, the power consumption of the controlled device increases within a range where the total power consumption is equal to or less than the target upper limit value. Thereby, the excessive suppression of the driving | operation of an apparatus can be prevented.

It is a figure which shows the structure of the energy management system which concerns on Embodiment 1. FIG. It is a block diagram which shows the structure of a control apparatus. It is a block diagram which shows the structure of the function of a control apparatus. It is a figure which shows an example of apparatus data. It is a figure which shows an example of a priority table. It is a flowchart which shows the control processing performed by a control apparatus. It is a flowchart which shows a reference value selection process. It is a 1st figure for demonstrating transition of electric power. It is a flowchart which shows a priority change process. It is a figure which shows the priority table by which the priority was changed. It is a 2nd figure for demonstrating transition of electric power. It is a 3rd figure for demonstrating transition of electric power. It is a figure which shows the structure of the energy management system which concerns on Embodiment 2. FIG. It is a flowchart which shows a reference value selection process. It is a flowchart which shows a priority change process. It is a figure which shows the modification of a priority table. It is a figure which shows the modification of a structure of an energy management system.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 shows a configuration of an energy management system 1000 according to the present embodiment. The energy management system 1000 is a HEMS (Home Energy Management System) for efficiently using power by monitoring the balance of power in a house and controlling equipment. As shown in FIG. 1, the energy management system 1000 includes a control device 10 that controls the electrical devices 31, 32, and 33, a measurement device 20 that measures power, and a plurality of electrical devices 31 to 33 that consume power. The power converter 40 that converts power, the power storage device 50 that stores the power, and the power generation device 60 that generates the power and supplies it to the house. 1 represents a power line, a thin solid line connected to the measuring apparatus 20 represents a signal line, and a broken line represents a communication line.

  The control device 10 acquires information on the power balance of the energy management system 1000 as a whole, information on the operating state of the electric devices 31 to 33, and the like, and controls the electric devices 31 to 33 based on the acquired information. As illustrated in FIG. 2, the control device 10 is configured as a computer including a processor 11, a main storage unit 12, an auxiliary storage unit 13, an input unit 14, an output unit 15, and a communication unit 16. The main storage unit 12, auxiliary storage unit 13, input unit 14, output unit 15, and communication unit 16 are all connected to the processor 11 via the internal bus 17.

  The processor 11 includes a CPU (Central Processing Unit) and the like. The processor 11 executes various processes by executing the program P1 stored in the auxiliary storage unit 13.

  The main storage unit 12 includes a RAM (Random Access Memory) or the like. The main storage unit 12 loads the program P1 from the auxiliary storage unit 13. The main storage unit 12 is used as a work area for the processor 11.

  The auxiliary storage unit 13 includes a nonvolatile memory such as an HDD (Hard Disk Drive) or a flash memory. The auxiliary storage unit 13 stores various data used for the processing of the processor 11 in addition to the program P1.

  The input unit 14 includes, for example, an input key and a capacitive pointing device. The input unit 14 acquires information input by the user of the control device 10 and notifies the processor 11 of the information. The input unit 14 is used, for example, to change data stored in the auxiliary storage unit 13.

  The output unit 15 includes a display device such as an LCD (Liquid Crystal Display). For example, the output unit 15 is formed integrally with a pointing device that configures the input unit 14 to configure a touch screen.

  The communication unit 16 includes a communication interface circuit for the control device 10 to communicate with an external device. As shown in FIG. 1, the devices outside the control device 10 include a measurement device 20, electrical devices 31 to 33, a terminal 70, and a server 80. The communication unit 16 transmits the data output from the processor 11 to these external devices. In addition, the communication unit 16 outputs data received from an external device to the processor 11.

  The above-described processor 11 cooperates with the main storage unit 12, the auxiliary storage unit 13, the input unit 14, the output unit 15, and the communication unit 16, thereby realizing various functions of the control device 10. As shown in FIG. 3, the control device 10 includes, as its function, an acquisition unit 110 that acquires data, a storage unit 120 that stores data, a power prediction unit 130 that predicts power transition, and electrical devices 31 to 33. The control unit 150 includes a reference value selection unit 140 that selects a reference value based on the priority given to the control unit 150 and a control unit 150 that controls the electrical devices 31 to 33 based on the priority.

  The acquisition unit 110 is mainly realized by the processor 11, the input unit 14, and the communication unit 16. The acquisition unit 110 acquires the result of the measurement by the measurement device 20 from the measurement device 20 and stores it in the storage unit 120 as measurement data D1. Moreover, the acquisition part 110 acquires regularly the operation state of each electric equipment 31-33 from each electric equipment 31-33. The period for acquiring the operating state is, for example, 5 minutes. In addition, the acquisition unit 110 acquires a target upper limit value input to the input unit 14 or the terminal 70 by the user, and stores the target upper limit value in the storage unit 120 as target upper limit value data D2.

  The target upper limit value means a target value that is an upper limit of the total power consumption of the energy management system 1000 as a whole. In the present embodiment, the total power consumption of the energy management system 1000 as a whole is equal to the total power consumption of the house where the energy management system 1000 is installed. For example, the user inputs a value of 2.5 kW as the target upper limit value when the user wants to limit the power consumed in the house to 2.5 kW. The target upper limit value is determined based on, for example, the capacity of a house breaker or an electricity rate. Hereinafter, the total power consumption of the entire energy management system 1000 is simply referred to as total power consumption.

  The storage unit 120 is mainly realized by the main storage unit 12 and the auxiliary storage unit 13. The storage unit 120 stores measurement data D1, target upper limit data D2, prediction data D3, device data D4, priority table D5, and reference value data D6.

  The prediction data D3 is data indicating the transition of power predicted by the power prediction unit 130. As shown in FIG. 4, the device data D4 is data that associates a device ID (identifier), a model, and maximum power consumption (rated power) during operation for each of the electrical devices 31 to 33. Note that the device IDs of the electrical devices 31 to 33 are the same as the codes of the electrical devices 31 to 33 for convenience of explanation. The device data D4 may be acquired from the electrical devices 31 to 33 by the acquisition unit 110 when the electrical devices 31 to 33 and the control device 10 can communicate with each other, or input to the input unit 14 or the terminal 70 by the user. May be acquired by the acquisition unit 110.

  The priority table D5 is a table indicating the priority given to each of the electric devices 31 to 33. As shown in FIG. 5, the priority table D5 according to the present embodiment associates the device ID with the priority set for each time section of the day for each of the electrical devices 31 to 33. It is. In the present embodiment, the priority is any integer value from 1 to 5, and the higher the value, the higher the priority. For example, the electric device 31 is a lighting device as shown in FIG. 4, and a low priority is given during the daytime (0: 0 to 18:00) where external light is considered to be inserted. On the other hand, at night (18:00 to 24:00) when it is considered that there is no outside light, a high priority is given to the electric device 31, and the use of the electric device 31 is given priority over other devices.

  The priority of the priority table D5 is set by the user. The user may input an integer value indicating the priority from the input unit 14 or the terminal 70. Further, the acquisition unit 110 or the control unit 150 may set individual priorities according to the policy input by the user. The policy input by the user may be, for example, an answer to the question from the control device 10 “Does external light enter during the day?” Or “Prior to air conditioning during the day”. Thus, a policy using a model and a time division may be used.

  The reference value data D6 is data indicating the priority selected as the reference value from the priorities in the priority table D5. This reference value is a reference for limiting the total power consumption to a target upper limit value or less. In the present embodiment, the total power consumption is limited to the target upper limit value or less by limiting the operation of the device to which the priority lower than the reference value is given. In FIG. 5, as an example, the priority (“1” and “2”) of the devices that cannot be used when the reference value is “3” is hatched. When the reference value is set to “3”, for example, the operation of the electric device 31 is prohibited at 0:00 to 18:00, and the operation of the electric device 31 is permitted at 18:00 to 24:00. .

  The power prediction unit 130 is mainly realized by the processor 11. Based on the measurement data D1, the target upper limit value, the device data D4, the priority table D5, the reference value, and the like, the power prediction unit 130 determines the transition of the total power consumption and the transition of the power consumption of the electrical devices 31 to 33 on the next day. Predict. The power prediction unit 130 may predict the transition of power for each of the reference values set to a plurality of different values. The power prediction unit 130 stores the prediction result in the storage unit 120 as the prediction data D3.

  For example, the power prediction unit 130 may use an average value of power measured in the past several days as a prediction result. In addition, the storage unit 120 stores the usage results (operating state history) of the electrical devices 31 to 33, and the power prediction unit 130 predicts the transition of power in the next day by combining the usage results and the device data D4. May be. In addition, the storage unit 120 stores the use schedule (operational state plan) of the electric devices 31 to 33 set by the user, and the power prediction unit 130 combines the use schedule and the device data D4 to generate power on the next day. May be predicted.

  In addition, it is preferable that the prediction by the electric power estimation part 130 considers the log | history of the reference value set in the past. That is, the power prediction unit 130 takes into account that the operation that is prohibited the previous day is permitted for the next day or that the operation that is permitted the previous day is prohibited the next day. Thus, it is preferable to predict the transition of power.

  The reference value selection unit 140 is mainly realized by the processor 11. Based on the prediction data D3, the reference value selection unit 140 selects a reference value from the priorities given to the electrical devices 31 to 33 so that the total power consumption on the next day is equal to or lower than the target upper limit value. Then, the reference value selection unit 140 stores data indicating the selected reference value in the storage unit 120 as the reference value data D6.

  The control unit 150 is mainly realized by the processor 11. The control unit 150 controls the electrical devices 31 to 33 based on the data stored in the storage unit 120, thereby limiting the total power consumption to a target upper limit value or less. And the control part 150 adjusts the permission or prohibition of the driving | operation of the electric equipment 31-33 within the range from which total power consumption becomes below a target upper limit. The control unit 150 includes a priority changing unit 151 that changes the priority of the priority table D5, and a device control unit 152 that controls the electrical devices 31 to 33 based on the priority.

  The priority changing unit 151 changes the priority given to the electrical devices 31 to 33 within a range where the total power consumption is equal to or less than the target upper limit value based on the prediction data D3. For example, the priority changing unit 151 has a case where the predicted total power consumption is somewhat below the target upper limit value and the predicted value of the total power consumption is less than or equal to the target upper limit value even if a device that is allowed to operate is added. In addition, the priority is changed so that the operation of this device is permitted.

  The device control unit 152 compares the priority of the priority table D5 with the reference value, generates a control command for the electric devices 31 to 33 according to the comparison result, and transmits the control command to each of the electric devices 31 to 33. The content of the control command according to the present embodiment is permission or prohibition of driving.

  Returning to FIG. 1, the measurement device 20 measures the power supplied via the power line using current transformers (CT) C20, C31, C32, C33, C40, and C50 attached to the power line. To do. The current transformer C20 is used to measure the total power consumption of the energy management system 1000. Moreover, each of the current transformers C31 to C33 is used to measure the power consumed by the electric devices 31 to 33. Further, the current transformer C40 is used to measure the power input to the power converter 40 or the power output from the power converter 40. The current transformer C50 is input to the power storage device 50. This is used to measure the electric power being output or the electric power being output from the power storage device 50. Then, the measuring device 20 notifies the control device 10 of the measurement result. The electric power generated by the power generation device 60 can be estimated from the measurement result by the current transformer C40 and the measurement result by the current transformer C50.

  The electric devices 31 to 33 are home appliances installed in a house. As shown in FIG. 4, electrical devices 31 to 33 according to the present embodiment are lighting devices, IH (Induction Heating) cookers, and air conditioners, respectively. The electric devices 31 to 33 are permitted or prohibited from operation according to a control command from the control device 10. When the electric devices 31 to 33 are operated by the user when the operation is permitted, the electric devices 31 to 33 operate according to the user's operation. On the other hand, when the electric devices 31 to 33 are operated by the user when the operation is prohibited, the electric devices 31 to 33 are kept in a standby state without being operated.

  In addition, the apparatus controlled by the control apparatus 10 is not limited to the model shown in FIG. For example, the electric devices 31 to 33 may be a television receiver, a refrigerator, an electric water heater, or the like. Further, the number of devices controlled by the control device 10 is not limited to three. Furthermore, the energy management system 1000 may be configured to include home appliances that are not controlled by the control device 10.

  The power converter 40 is, for example, a power conditioner that converts a direct current and an alternating current to each other and converts a voltage of the direct current power. The power converter 40 converts the AC power supplied from the commercial power source PS into DC power and supplies it to the power storage device 50. Further, the power converter 40 converts the DC power supplied from the power storage device 50 and the power generation device 60 into AC power, and supplies the AC power to the electrical devices 31 to 33.

  The power storage device 50 is a stationary power storage device or an electric vehicle, and includes a secondary battery such as a nickel / cadmium battery, a nickel / hydrogen battery, a lithium ion battery, or a lead storage battery. The power storage device 50 stores, for example, the power supplied from the commercial power source PS at night when the electricity rate is low, and supplies the stored power to the electric devices 31 to 33 during the day.

  The power generation device 60 is a device that generates power using sunlight, for example. The electric power generated by the power generation device 60 is supplied to the electrical equipments 31 to 33. However, if the power is generated in excess of the demand in the house, it is sold to the electric power company by the reverse power flow to the commercial power source PS. You may be electrified. The power generation device 60 is not limited to a device that generates power by solar power generation, and may be a device that generates power using natural energy such as geothermal power generation or wind power generation, a fuel cell, or fossil fuel.

  The terminal 70 is, for example, a smartphone or a tablet-type terminal, and is used as a user interface of the control device 10. The server 80 is a computer device connected to the control device 10 via the network NW, for example. For example, the server 80 notifies the device data D4 provided by the manufacturer of the electrical devices 31 to 33 in response to a request from the control device 10. Further, the server 80 may notify the control device 10 of the weather information of the area to which the house where the control device 10 is installed belongs. This weather information is used, for example, for the power prediction unit 130 to predict the power generation amount of the power generation device 60 or the power consumption of the electric devices 31 to 33.

  Next, control processing executed by the control device 10 will be described with reference to FIGS. This control process is executed, for example, when the control device 10 is powered on. Note that the control process is mainly executed by the processor 11 of the control device 10, but the control process will be described below using the functions shown in FIG. 3 as appropriate.

  As shown in FIG. 6, in the control process, the processor 11 acquires data (step S1). Specifically, the acquisition unit 110 acquires the measurement data D1 from the measurement device 20, and acquires the target upper limit data D2 by inquiring the user. The acquisition unit 110 may acquire the device data D4 from the server 80 or the like, or may acquire the priority of the priority table D5 by inquiring the user.

  Next, the processor 11 executes a reference value selection process (step S2). This reference value selection process will be described with reference to FIG.

  As shown in FIG. 7, in the reference value selection process, the reference value selection unit 140 calculates a target reduction amount (step S21). Specifically, the reference value selection unit 140 calculates the target value of the reduction amount of the total power consumption in one day by subtracting the target upper limit value from the transition of the previous day of the total power consumption indicated by the measurement data D1. . The target reduction amount is a positive value at the time when the total power consumption exceeds the target upper limit value, and the target reduction amount is a negative value at the time when the total power consumption is less than the target upper limit value. When the target reduction amount is negative, it is not necessary to reduce the total power consumption.

  FIG. 8 shows an example of power transition. A line Lt in FIG. 8 indicates the target upper limit value, a line La indicates a transition of the total power consumption, a line Lb indicates a transition of the total power consumption of the electric devices 31 to 33, and a line Lc indicates the electric device 33. Shows the transition of power consumption. At the end of the first day (0:00) shown in FIG. 8, the total power consumption of the previous day (the first day) has never exceeded the target upper limit value, so the target reduction amount becomes negative. Further, at the end of the second day, the total power consumption of the previous day (second day) exceeds the target upper limit value during the day, so that the target reduction amount during the day becomes a positive value.

  Next, the reference value selection unit 140 sets the reference value to an initial value (step S22). This initial value is equal to the lowest priority assigned to the electrical devices 31 to 33, and is “1” in the present embodiment.

  Next, the reference value selection unit 140 determines whether or not the reduction amount of the total power consumption based on the reference value is equal to or more than the target reduction amount for each time segment shown in FIG. 5 (step S23). The amount of decrease in the total power consumption based on the reference value is calculated based on the transition of the total power consumption on the next day predicted by the power prediction unit 130 based on the currently set reference value from the transition of the total power consumption measured on the previous day. It can be obtained by subtracting.

  For example, when the reference value is set to the initial value (“1”), there is no device assigned with a lower priority (“0” or less) than the reference value, so the electric devices 31 to 33 are operated. Neither is prohibited. Further, for example, when the reference value is set to “3”, the operation of a device having a lower priority than the reference value is prohibited (see hatching in FIG. 5). The amount of decrease in total power consumption based on this reference value is calculated by the power prediction unit 130 based on the reference value set on the previous day and the device data D4.

  The third day in FIG. 8 shows the transition of power predicted based on the reference value set to “3” at the end of the second day. As indicated by the line Lc in FIG. 8, the operation of the electric device 33 is prohibited during the day, whereby the total power consumption is limited to a target upper limit value or less. In the present embodiment, it is assumed that the total power consumption on the third day predicted based on the reference value set to “2” does not fall below the target upper limit value.

  When it is determined that the reduction amount of the total power consumption based on the reference value is not equal to or greater than the target reduction amount (step S23; No), the reference value selection unit 140 increases the reference value (step S24). Specifically, the reference value selection unit 140 increases the reference value by one. Thereafter, the reference value selection unit 140 repeats the processes after step S23.

  On the other hand, when it is determined that the total power consumption reduction amount based on the reference value is equal to or greater than the target reduction amount (step S23; Yes), the reference value selection unit 140 ends the reference value selection process. As a result, a reference value is selected from the priorities in the priority table D5 such that the total power consumption is less than or equal to the target upper limit value by prohibiting the operation of a device with a priority lower than the reference value. It becomes.

  Returning to FIG. 6, after the end of the reference value selection process (step S2), the processor 11 executes a priority change process (step S3). This priority changing process will be described with reference to FIG.

  As shown in FIG. 9, in the priority changing process, the priority changing unit 151 calculates the remaining power of the total power consumption (step S31). Specifically, the priority changing unit 151 subtracts the transition of the total power consumption on the next day predicted by the power prediction unit 130 based on the currently set reference value from the target upper limit value, so that the total power consumption Calculate the remaining power. For example, at the end of the second day in FIG. 8, the remaining power of the total power consumption on the third day is obtained by subtracting the transition of the total power consumption (line La) from the target upper limit value (line Lt) on the third day. Is calculated.

  Next, the priority change unit 151 calculates the amount of increase in power consumption due to the change of priority for each of the electrical devices 31 to 33 (step S32). Specifically, the priority changing unit 151 is increased by permitting the prohibited operation when the priority lower than the current reference value is increased by “1” in the priority table D5. The power consumption is calculated for each of the electrical devices 31 to 33. For example, the priority changing unit 151 increases the priority given hatching by “1” in the priority table D5 shown in FIG. Even if the priority “1” in FIG. 5 is increased by “1” and becomes “2”, the reference value is “3”, so that the operation is continuously prohibited and the power consumption increases. There is no. On the other hand, when the priority “2” in FIG. 5 is increased by “1” to “3”, driving is permitted and power consumption is increased.

  Next, the priority changing unit 151 selects one of the electrical devices 31 to 33 based on a predetermined index (step S33). The index according to the present embodiment is the maximum power consumption shown in FIG. 4, and the priority changing unit 151 is not yet selected from the electrical devices 31 to 33 and has the largest maximum power consumption. Select the device. In the example shown in FIG. 4, the electric device 32 is first selected.

  Next, the priority changing unit 151 determines whether or not the amount of increase in power consumption for the selected electrical device is greater than the remaining power (step S34). Specifically, in the priority changing unit 151, for the electrical device selected in step S33, the increase amount of the power consumption calculated in step S32 is larger than the remaining power of the total power consumption calculated in step S31. It is determined whether or not. As can be seen from FIG. 4, the increase in power consumption calculated in step S <b> 32 for the electrical device 32 is zero. For this reason, when the electrical device 32 is selected in step S33, the determination in step S34 is negative.

  If it is determined that the increase in power consumption for the selected electrical device is not greater than the remaining power (step S34; No), the priority changing unit 151 changes the priority of the selected electrical device (step S35). Specifically, among the priorities of the selected electrical device, the priority lower than the current reference value is changed to a priority higher by “1”.

  Thereafter, the priority changing unit 151 repeats the processes after step S31. As a result, one or a plurality of devices are identified from the electrical devices 31 to 33 until the remaining power of the total power consumption is eliminated, and the prohibited operation for the identified devices is permitted by changing the priority. It becomes. In the example shown in FIGS. 4 and 5, the electrical device 33 is selected next to the electrical device 32, and the daytime priority set to “2” is changed to “3” as shown in FIG. 10. Be changed. As a result, as shown on the third day in FIG. 11, the power consumption of the electrical device 32 increases from that shown in FIG. 8 within a range where the total power consumption is equal to or less than the target upper limit value. .

  FIG. 12 shows the transition of power according to another example when the priority is changed. In the example shown in FIG. 12, the reference value is set to “3” at the end of the second day, and the priority is not changed. For this reason, on the third day, the operation of the electric device 33 is suppressed during the day. After that, as a result of the total power consumption on the third day changing at a lower value than predicted by the power prediction unit 130, the reference value is continuously set to “3” at the end of the third day, and the priority is changed. Yes. Thus, on the fourth day, the power consumption of the electrical device 33 increases from the third day within a range where the total power consumption is equal to or less than the target upper limit value.

  It should be noted that the case where the forecast of the sunshine hours on the fourth day is greatly increased and the predicted value of the power generation amount of the power generation device 60 is increased, or when the charging rate of the power storage device 50 is significantly increased, etc. As shown in FIG. 4, the priority is not changed at the end of the second day, and the priority is changed at the end of the third day.

  If it is determined in step S34 that the amount of increase in power consumption for the selected electrical device is greater than the remaining power (step S34; Yes), the priority changing unit 151 ends the priority changing process.

  Returning to FIG. 6, after the priority changing process (step S3) ends, the processor 11 starts a timer (step S4).

  Next, the processor 11 compares the priority with the reference value (step S5). Specifically, the device control unit 152 compares the priority of the priority table D5 with the currently set reference value. As a result, for each of the electric devices 31 to 33, whether or not to drive is determined for each time segment.

  Next, the device control unit 152 acquires the operating state of the electric devices 31 to 33 (step S6). Then, the device control unit 152 controls the electric devices 31 to 33 according to the comparison result in step S5 (step S7). Specifically, when a device whose operation is to be prohibited starts operation, or when the control device 10 is requested to permit operation, the device control unit 152 prohibits operation of this device.

  Next, the processor 11 determines whether or not the count value of the timer has exceeded a certain time (step S8). This fixed time is, for example, 5 minutes. When it is determined that the count value of the timer does not exceed the predetermined time (step S8; No), the processor 11 waits for a preset time. This time is, for example, 30 seconds. Thereafter, the processor 11 repeats the determination in step S8.

  On the other hand, when it is determined that the count value of the timer has exceeded a certain time (step S8; Yes), the processor 11 determines whether or not the current time is a specific time (step S10). The specific time according to the present embodiment is 0:00 am (0:00).

  When it determines with the present time not being a specific time (step S10; No), the processor 11 repeats the process after step S4. Thereby, control with respect to the electric equipments 31-33 is repeatedly performed with a fixed time as a period.

  On the other hand, when it is determined that the current time is a specific time (step S10; Yes), the processor 11 repeats the processes after step S1. Thereby, the selection of the reference value and the change of the priority are performed every day.

  As described above, the priority changing unit 151 increases the power consumption of the device within a range in which the total power consumption is equal to or less than the target upper limit value after the total power consumption is limited to the target upper limit value or less. Specifically, by changing the priority set lower than the reference value to a priority equal to the reference value, the device is excluded from the target for reducing the power consumption, and the operation is permitted. Therefore, the power consumption of the device whose priority has been changed increases. Thereby, the control apparatus 10 can improve a user's comfort by preventing the operation | movement of an apparatus excessively and ensuring the apparatus which can be utilized as much as possible.

  Further, when selecting a device whose priority is to be changed, the priority changing unit 151 selects one or a plurality of devices in the descending order of the index using the rated power as an index. In general, if the operation of a device having a large rated power is prohibited, it is considered that the influence on the user's comfort is great. For this reason, the priority changing unit 151 changes the priority and permits the driving in order from the device that improves the user comfort more efficiently.

Embodiment 2. FIG.
Next, the second embodiment will be described focusing on the differences from the first embodiment. In addition, about the structure which is the same as that of the said Embodiment 1, or equivalent, while using an equivalent code | symbol, the description is abbreviate | omitted or simplified.

  The present embodiment is different from the first embodiment in that no power is supplied from the commercial power source PS. Further, the target upper limit value according to the present embodiment is different from that according to the first embodiment in that the amount of power stored in power storage device 50 is set so as not to fall below the power storage lower limit value. ing. The power storage lower limit value is a target value that is a lower limit of the amount of power stored in the power storage device 50, and is, for example, 1.0 kWh. The power storage lower limit value is set by the user.

  FIG. 13 shows a configuration of energy management system 1001 according to the present embodiment. In this energy management system 1001, power from the commercial power source PS (see FIG. 1) is not supplied. The control device 10 is not connected to the network NW (see FIG. 1). The configuration of the energy management system 1001 corresponds to a configuration that can be operated in a house at the time of a power failure due to a disaster, for example.

  Next, reference value selection processing according to the present embodiment will be described with reference to FIG. As shown in FIG. 14, in the reference value selection process, the reference value selection unit 140 sets the reference value to the initial value without executing Step S21 (see FIG. 7) (Step S22).

  Next, the power prediction unit 130 predicts the transition of power on the next day (step S28). Then, the reference value selection unit 140 determines whether or not the prediction result includes a time when the remaining amount of the power storage device 50 falls below the power storage lower limit value (step S29).

  When the determination in step S29 is negative (step S29; No), the reference value selection unit 140 proceeds to step S24. On the other hand, when the determination in step S29 is affirmed (step S29; Yes), the reference value selection unit 140 ends the reference value selection process.

  Next, priority changing processing according to the present embodiment will be described with reference to FIG. As shown in FIG. 15, in the priority change process, the priority change unit 151 does not execute step S <b> 31 (see FIG. 9), and the power consumption due to the change of priority for each of the electrical devices 31 to 33. An increase amount is calculated (step S32).

  And after completion | finish of step S33, the electric power prediction part 130 estimates the transition of the electric power of the next day when the priority of the selected electrical equipment is changed (step S38). Thereafter, the priority changing unit 151 determines whether or not the prediction result includes a time when the remaining amount of the power storage device 50 falls below the power storage lower limit value (step S39).

  When the determination in step S39 is negative (step S39; No), the priority changing unit 151 proceeds to step S35. On the other hand, when the determination in step S39 is affirmative (step S39; Yes), the priority changing unit 151 ends the priority changing process.

  As described above, the target upper limit value according to the present embodiment is set such that the remaining amount of power storage device 50 is equal to or greater than the power storage lower limit value. For this reason, even when electric power is not supplied from the commercial power source PS, as much equipment as possible can be obtained by preventing excessive suppression of the operation of the electric equipments 31 to 33 while securing the remaining amount of the power storage device 50 to some extent. Is ready for use. Thereby, a user's comfort can be improved.

  As mentioned above, although embodiment of this invention was described, this invention is not limited by the said embodiment.

  For example, in the above embodiment, the measurement device 20 measures the power, but the electric devices 31 to 33 and the like may measure the power and notify the control device 10 of the measurement result.

  Moreover, although the priority which concerns on the said embodiment was for deciding whether to operate the electric equipment 31-33, the different priority for each of several operation mode of the electric equipment 31-33. It may be given. For example, with regard to the electrical device 33, even when cooling with a set temperature of 20 degrees or less is given priority “1”, cooling with set temperature of 30 degrees or less is given priority “5”. Good.

  Moreover, in the said embodiment, the driving | operation of the apparatus for which driving | operation was prohibited was permitted by changing the priority only "1" smaller than a reference value into the priority equal to a reference value, However, It is limited to this. Not. For example, a priority that is “1” or more lower than the reference value may be changed to a higher priority than the reference value.

  In the above embodiment, the rated power is used as an index, and one or more devices are selected in descending order of the index. However, the present invention is not limited to this. For example, using rated power as an index, one or more devices may be selected in ascending order of the index. In this case, as many devices as possible can be used. Further, the index is not limited to the rated power, and may be a usage frequency, a power consumption amount during a certain period, or a priority. The certain period is, for example, the past week.

  If the frequency of use of each of the electrical devices 31 to 33 is used as an index and the devices are selected in descending order of the index, it is possible to preferentially use a device that is frequently used by the user. Further, if the devices are selected in ascending order of the index, the operation of the device is prohibited without the intention of the user, so that it is possible to prevent the occurrence of an unfavorable situation for the user as much as possible.

  If the electric power consumption of each of the electric devices 31 to 33 is used as an index, the device can be selected based on the actually used electric energy instead of the rated power of the electric devices 31 to 33.

  Moreover, you may prepare beforehand the pattern of the priority set to each of the electric equipments 31-33 according to several power saving levels. FIG. 16 shows an example in which priority is set for each device according to each of a plurality of power saving levels. In the example shown in FIG. 16, the priority at which driving is prohibited when the reference value is “3” is hatched. In this example, the electric device 31 is operated at the power saving level 2, and the electric device 32 is operated at the power saving level 1.

  Moreover, in the said embodiment, although demonstrated supposing the case where the control apparatus 10 is arrange | positioned in a house, the control apparatus 10 may be arrange | positioned outside a house. For example, as shown in FIG. 17, the measuring device 20, the electrical devices 31 to 33, and the terminal 70 are connected to a router 90 in the house HM, and communicate with the server 80 having the control unit 10 a via the router 90. May be. The control unit 10a of the server 80 has a function equivalent to that of the control device 10 according to the above embodiment.

  In the example illustrated in FIG. 17, the energy management system 1000 includes a server 80, a measurement device 20, electrical devices 31 to 33, and a router 90. The total power consumption in this example is the total power consumption of the entire system composed of devices installed in the house HM.

  The functions of the control device 10 according to the above-described embodiment can be realized by dedicated hardware or by a normal computer system.

  For example, the program P1 stored in the auxiliary storage unit 13 is stored in a computer-readable recording medium such as a flexible disk, a CD-ROM (Compact Disk Read-Only Memory), a DVD (Digital Versatile Disk), and distributed. By installing the program P1 in the computer, a device that executes the above-described processing can be configured.

  Alternatively, the program P1 may be stored in a disk device or the like included in a predetermined server device on a communication network such as the Internet, and may be downloaded onto a computer, for example, superimposed on a carrier wave.

  The above-described processing can also be achieved by starting and executing the program P1 while transferring it through the communication network.

  Further, the above-described processing can also be achieved by executing all or part of the program P1 on the server device and executing the program P1 while the computer transmits / receives information related to the processing via the communication network. .

  Note that when the above functions are realized by sharing an OS (Operating System) or when the functions are realized by cooperation between the OS and an application, only the part other than the OS may be stored in a medium and distributed. Alternatively, it may be downloaded to a computer.

  The means for realizing the function of the control device 10 is not limited to software, and part or all of the means may be realized by dedicated hardware (circuit or the like).

  1000, 1001 Energy management system, 10 control unit, 10a control unit, 11 processor, 12 main storage unit, 13 auxiliary storage unit, 14 input unit, 15 output unit, 16 communication unit, 17 internal bus, 110 acquisition unit, 120 storage Unit, 130 power prediction unit, 140 reference value selection unit, 150 control unit, 151 priority change unit, 152 device control unit, 20 measuring device, 31-33 electric device, 40 power converter, 50 power storage device, 60 power generation device 70 terminals, 80 servers, 90 routers, C20, C31 to C33, C40, C50 current transformer, D1 measurement data, D2 target upper limit data, D3 prediction data, D4 device data, D5 priority table, D6 reference value data , HM housing, a, Lb, Lc, Lt line, NW network, P1 program, PS commercial power source.

Claims (6)

A control device for controlling a plurality of electrical devices,
When the total power consumption of the entire system including the plurality of electrical devices and the power storage device exceeds a target upper limit value, an electrical device having a priority lower than one of the plurality of electrical devices is given. controls by reducing the power consumption of the electrical equipment, a control means for limiting the total power consumption below the target upper limit value,
The control means limits the total power consumption to the target upper limit value or less, and then changes the priority assigned to any controlled device of the plurality of electrical devices to change the controlled device . Control to increase the power consumption of the controlled device within a range where the total power consumption is less than or equal to the target upper limit value,
When changing the priority of the controlled device, change the priority so that the amount of power stored in the power storage device is equal to or higher than the storage lower limit value,
The priority is given to each of a plurality of operation modes of the electric device. Power consumption value acquisition means for acquiring the value of the total power consumption;
Wherein the plurality of granted to each electrical device, selected from the priority operating the electric device, the one of the priority based on the difference between the value obtained by the target upper limit value and the power value obtaining means And selecting means for
The control means includes
When the value acquired by the power consumption value acquisition unit exceeds the target upper limit value, the control unit controls an electrical device that is given a priority lower than the selected priority among the plurality of electrical devices. Reduce the power consumption of the electrical equipment,
After limiting the total power consumption to the target upper limit value or less, the priority given to any one of the controlled devices among the electric devices whose power consumption has decreased is equal to the selected priority or By changing the priority to a priority higher than the selected priority and excluding the controlled device from the target for reducing the power consumption, the controlled device is controlled so that the total power consumption is the target upper limit value. Increase the power consumption of the controlled device within the following range,
The control device according to claim 1. The control means includes
After limiting the total power consumption to the target upper limit value or less, the usage frequency of each of the plurality of electrical devices, the maximum power consumption, the power consumption amount during a certain period, and the priority are used as indicators. As described above, the one or a plurality of the controlled devices are specified from the electric device whose power consumption has been reduced in ascending or decreasing order of the index, and the priority given to the specified controlled device is determined as the selected priority. Change to a priority equal to or higher than the selected priority, and exclude the controlled device from the target to reduce power consumption,
The control device according to claim 2. An energy management system comprising a plurality of electrical devices, a power storage device, and a control device that controls the plurality of electrical devices,
The controller is
If the total power consumption of the whole energy management system has exceeded the target upper limit value, among the plurality of electric devices, consumption of the electric device by controlling the electric device lower priority than the first priority is assigned Control means for limiting the total power consumption to the target upper limit value or less by reducing power;
The control means limits the total power consumption to the target upper limit value or less, and then changes the priority assigned to any controlled device of the plurality of electrical devices to change the controlled device . Control to increase the power consumption of the controlled device within a range where the total power consumption is less than or equal to the target upper limit value,
When changing the priority of the controlled device, change the priority so that the amount of power stored in the power storage device is equal to or higher than the storage lower limit value,
An energy management system in which priority is given to each of a plurality of operation modes of an electric device . Electrical total power consumption of the entire system including the power storage device a plurality of electrical devices, if it exceeds targets upper limit, the among the plurality of electric devices, a lower priority than the first priority is assigned by controlling the device reduces the power consumption of the electrical device, a first control step of limiting the total power consumption below the target upper limit value,
After the total power consumption is limited to the target upper limit value or less, controlling the controlled device by changing the priority assigned to any controlled device of the plurality of electrical devices, A second control step of increasing the power consumption of the controlled device within a range in which the total power consumption is equal to or less than the target upper limit value;
Only including,
When changing the priority of the controlled device, change the priority so that the amount of power stored in the power storage device is equal to or higher than the storage lower limit value,
A control method in which priority is given to each of a plurality of operation modes of an electric device . Computer
Electrical total power consumption of the entire system including the power storage device a plurality of electrical devices, if it exceeds targets upper limit, the among the plurality of electric devices, a lower priority than the first priority is assigned by controlling the device reduces the power consumption of the electrical device, a first control means for limiting the total power consumption below the target upper limit value,
After the total power consumption is limited to the target upper limit value or less, controlling the controlled device by changing the priority assigned to any controlled device of the plurality of electrical devices, Second control means for increasing the power consumption of the controlled device within a range where the total power consumption is equal to or less than the target upper limit value;
To function as,
The second control means, when changing the priority of the controlled device, changes the priority so that the amount of power stored in the power storage device is equal to or higher than a power storage lower limit value,
A priority is a program given to each of a plurality of operation modes of an electric device .

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