JP6029713B1 - POWER MANAGEMENT DEVICE, DEVICE SYSTEM, POWER MANAGEMENT METHOD, AND PROGRAM - Google Patents

Abstract

Provided are a power management device, a device system, a power management method, and a program capable of providing a user with a usable time of a device even during a power failure. A power management apparatus includes a storage unit that stores information on an event that can cause a power failure and a device usage plan that defines a device usage schedule. Moreover, when the commercial power supply fails, a power failure period estimation unit 111 that estimates a power failure period of the commercial power supply is provided. Moreover, the power consumption amount calculation part 114 which calculates the power consumption amount which an apparatus consumes in the power failure period of the commercial power source estimated by the power failure period estimation part 111 is provided. In addition, the device can be used based on the amount of power stored in the power storage device during the power failure period of the commercial power supply from the amount of power stored in the power storage device and the power consumption calculated by the power consumption calculation unit 114 An electric power balance calculation unit 115 for calculating time is provided. [Selection] Figure 3

Description

  The present invention relates to a power management device, a device system, a power management method, and a program.

  Introduction of EMS (Energy Management System) using power storage devices is progressing. The introduction of the power storage device aims at an economic effect by accumulating inexpensive power at night and using the power stored in the power storage device during the daytime when the power price is high. In addition, the use of power storage devices has attracted attention as a power source at the time of a power failure of a commercial power source caused by power shortage or disaster. Since the amount of power that can be used at the time of a power failure is limited to the amount of power stored in the power storage device, it is important to provide the user with time during which the device can be used continuously with the amount of power stored in the power storage device. Become.

  For example, Patent Document 1 acquires the amount of power generated by a power generation device and the amount of power consumed by a device from an external server via a communication network, and the time during which the device can be used continuously with the amount of power stored in the power storage device The technology to be provided is disclosed.

JP 2014-54123 A

  In the technology disclosed in Patent Document 1, the power management apparatus acquires information necessary for power management, such as the amount of power stored in the power storage device and the amount of power consumed by the device, from an external server via a communication network. Therefore, at the time of a large-scale power outage that also causes a failure in the communication network, power management using communication with an external server is not established, and the device can be used continuously with the amount of power stored in the power storage device Cannot be provided to users.

  The present invention has been made to solve the above-described problems, and provides a power management device, a device system, a power management method, and a program that can provide a user with a usable time of a device even during a power failure. For the purpose.

  In order to achieve the above object, the power management device according to the present invention acquires information about an event that may cause a power failure through the communication unit and stores it in the storage unit, and when the commercial power supply fails, the storage unit The information about the event that can cause the power outage is acquired from the power source, and the power outage period of the commercial power source is estimated. In addition, when a device that operates by receiving power supply based on the device usage plan is used, the amount of power consumed by the device is calculated within the estimated commercial power failure period. Also, based on the amount of power stored in the power storage device and the calculated power consumption, calculate the device usable time based on the device usage plan using the amount of power stored in the power storage device during the power failure period of the commercial power supply. To do. The communication unit transmits information including the usable time of the device calculated by the power balance calculation unit to the display device.

  According to the present invention, even when it is difficult to acquire information from an external server at the time of a power failure, the power failure period is estimated from information that can cause the power failure acquired before the power failure, and the device consumes during the estimated power failure period. By calculating the power consumption, the usable time of the device can be provided to the user.

It is a block diagram showing the structure of the apparatus system which concerns on Embodiment 1. FIG. It is a block diagram which shows the structure of the power management apparatus which concerns on Embodiment 1. FIG. 3 is a block diagram illustrating a configuration of a control unit of the power management apparatus according to the first embodiment. FIG. It is a figure of the past blackout period data resulting from a weather and an accident. It is a figure of the graph showing the electric power generation amount and electric power consumption in a power failure estimation period. It is a figure of the setting screen of the equipment use plan corresponding to a power failure scale. It is a figure of the display screen of an equipment use plan. It is a flowchart for demonstrating the apparatus usable time calculation process of the power management apparatus which concerns on Embodiment 1. FIG. It is a flowchart for demonstrating a power failure period estimation process. It is a flowchart figure for demonstrating the electric power generation amount estimation process. It is a flowchart figure for demonstrating an apparatus use plan setting process. It is a figure of the display screen of an equipment use plan. It is a flowchart figure for demonstrating the correction process of an apparatus use plan. It is a figure of the display screen of an equipment use plan. It is a figure of the display screen of an equipment use plan.

  Hereinafter, a power management device, a device system, a power management method, and a program according to embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals.

(Embodiment 1)
A configuration of an apparatus system 1000 including a power management function according to the first embodiment of the present invention will be described with reference to FIG. As shown in FIG. 1, the device system 1000 includes a device 1 (1 </ b> A, 1 </ b> B, 1 </ b> C) that changes its operation state in accordance with a control command from the power management device 100. In addition, the current detection device 2 (2A, 2B, 2C, 2D, 2E, 2F) that detects the current flowing through each power supply path, and the power consumption of the device 1 are measured from the current information supplied by each current detection device 2. The energy measuring device 3 is provided. Furthermore, the power generation apparatus 4 which assists the electric power grid | system (commercial power supply) 10, the power converter device 5 which converts direct-current power and alternating current power, and the electrical storage apparatus 6 which accumulate | stores and supplies electric power by charging / discharging are provided. A power management apparatus 100 that manages the apparatus system 1000 is connected to an external server 7 that supplies information about power failure, weather information, and the like to the power management apparatus 100 via a communication network 8 such as the Internet. The device system 1000 includes an input / output terminal 9 that functions as an input / output interface of the power management device 100. The device 1 is supplied with power from the power system (commercial power supply) 10 via the distribution board 11 during normal times, and is supplied with power from the power generation device 4 and the power storage device 6 during a power failure. In FIG. 1, a thick solid line represents a power line, a thin solid line represents a signal line from the current detection device 2 to the energy measurement device 3, and a broken line represents a communication line.

  The device 1 has a function of changing its own operation state in accordance with a control command received from the power management apparatus 100. The change of the operation state means that the power is turned on / off and the power consumption of the device 1 is changed to a different use state. Taking an air conditioner as an example, this corresponds to turning on / off the power source and changing the set temperature of air conditioning to operate in the energy saving mode. The device 1 is, for example, a television, a lighting device, an air conditioner, a refrigerator, or an IH (Inverter Heater) cooking device.

  The current detection device 2 detects input / output currents of the device 1, the power generation device 4, the power conversion device 5, and the power storage device 6, and supplies information indicating the detected current value to the energy measurement device 3.

  The energy measuring device 3 obtains the power consumption of the device 1, the power generation amount of the power generation device 4, etc. from the current information supplied by the current detection device 2, and supplies it to the power management device 100.

  The power generation device 4 is a power generation device that supplements the power supplied from the power system 10 and is a solar power generation device that generates power using sunlight.

  The power converter 5 performs conversion between DC power and AC power. The power conversion device 5 supplies power from the power system 10 to the power storage device 6 via the distribution board 11 when the power storage device 6 is charged. Further, the power conversion device 5 supplies power from the power storage device 6 to the device 1 via the distribution board 11 when the power storage device 6 is discharged. Further, the power generated by the power generation device 4 is supplied to the device 1 or the power storage device 6. For example, the power conversion device 5 supplies power to the device 1 from the power generation device 4 and the power storage device 6 during the daytime when the power rate is high, and stores power from the power system 10 to the power storage device 6 at night when the power rate is low. . Moreover, the power converter device 5 supplies the electric power of the electric power generating apparatus 4 and the electrical storage apparatus 6 to the apparatus 1 via the distribution board 11 at the time of a power failure.

  The power storage device 6 supplies the stored power to the device 1 via the power conversion device 5. The power storage device 6 includes, for example, a nickel cadmium battery, a nickel hydride battery, a lithium ion battery, a lead storage battery, and an electric vehicle or a stationary power storage device on which these are mounted.

  The external server 7 is a cloud server, for example. The power management apparatus 100 communicates with the external server 7 via the communication network 8 provided by the communication carrier. The power management apparatus 100 periodically acquires weather information necessary for power management, information on the amount of solar radiation for each region, weather (including disasters) that may cause a power failure, and information on accidents from the external server 7. Further, when communication with the external server 7 is possible even during a power failure, the power management apparatus 100 acquires information that serves as a measure of the scale, cause, and recovery time of the power failure from the external server 7.

  The electric power system 10 is a power network (commercial power supply) of an electric power company, and supplies electric power such as AC 100 V, AC 200 V, and the like. A power failure means a state where power supply from the power system 10 is stopped.

  The input / output terminal 9 can be constructed by mounting a dedicated application on a mobile terminal owned by the user. The input / output terminal 9 functions as an input / output terminal of the power management apparatus 100. An input of an equipment usage plan to be described later is also input from the input / output terminal 9.

  The power management device 100 manages the power consumption of the device 1 included in the device system 1000, the power generation amount of the power generation device 4, the power amount stored in the power storage device 6, and the like. As illustrated in FIG. 2, the power management apparatus 100 includes a communication unit 101 that performs communication with the external server 7, the input / output terminal 9, and the like, and a storage unit 102 that stores information acquired by the communication unit 101. Moreover, in order to control the function of the power management apparatus 100 and perform power management during the power outage period, the power outage period is estimated based on the information acquired by the communication unit 101 and the information stored in the storage unit 102. The control unit 103 has functions for performing estimation, calculation of device usable time, and the like.

  The communication unit 101 includes a communication module, and communicates with the external server 7, the input / output terminal 9, and the like (the reception function corresponds to the first communication unit). Under the control of the control unit 103, the communication unit 101 receives information that may cause a power failure, weather information, and the like from the external server 7 or the input / output terminal 9 and stores them in the storage unit 102. Further, the display information to be displayed on the display unit of the input / output terminal 9 supplied from the display information generating unit 116 is transmitted to the input / output terminal 9 (the transmission function corresponds to the second communication means). In addition, the control information created by the device operation management unit 117 is transmitted to each device 1.

  The storage unit 102 stores past power outage period information acquired from the external server 7, information on the amount of solar radiation, information on the amount of power generation, and the like. In addition, information on weather and accidents that can cause power outages periodically obtained from the external server 7 and weather forecasts for about one week ahead are stored as needed. The storage unit 102 also stores the remaining power amount of the power storage device 6, the power generation amount of the power generation device 4 acquired via the energy measurement device 3, and the power consumption amount of the device 1 as needed.

  The control unit 103 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), and the like. The control unit 103 controls the function of the power management apparatus 100. In particular, as a power management function during a power failure, as shown in FIG. 3, a power failure period estimation unit 111 that estimates a power failure period is provided. The power generation amount estimation unit 112 that estimates the amount of power generated by the power generation device 4 within the power failure estimation period, the device usage plan setting unit 113 that sets and registers the use schedule of the device 1 during the power failure estimation period, and the power failure estimation period And a power consumption amount calculation unit 114 that calculates the power consumption amount consumed by the device 1 based on the use plan of the device 1. Moreover, the power balance calculation part 115 which calculates the usable time of the apparatus 1 from the balance of the electric power generation amount by the electric power generating apparatus 4 in the power failure estimation period and the power consumption amount by the apparatus 1 is provided. Moreover, the display information generation part 116 which produces | generates the display information displayed on the input / output terminal 9 and the apparatus operation management part 117 which controls the apparatus 1 connected to the power management apparatus 100 based on an apparatus use plan are provided.

  The power outage period estimation unit 111 estimates a power outage period (a period until the power outage is restored) from the data of the past power outage period corresponding to the weather or the accident and the weather information and the accident information acquired immediately before the power outage. Specifically, the power failure period estimation unit 111 stores the past power failure period data caused by the weather or accident shown in FIG. 4 stored in the storage unit 102 in advance, and the weather information and accident information acquired periodically. The power outage period is estimated by associating with the information acquired immediately before the power outage. For example, when a power outage occurs after acquiring information that a large earthquake with a seismic intensity of 7 or more occurred before the power outage, the power outage period estimation unit 111 is associated with “an earthquake with a seismic intensity of 7 or more” shown in FIG. The information “power failure period 7 days” is acquired, and the power failure period is estimated to be 7 days. When a power outage occurs when a large typhoon approaches, information “power outage period 2 days” associated with “large typhoon” is acquired, and the power outage period is estimated as 2 days. When a power failure occurs after acquiring lightning weather information, information “power failure period 1 hour” associated with “lightning strike” is acquired, and the power failure period is estimated to be 1 hour.

  The communication unit 101 periodically acquires weather information and accident information from the external server 7 via the communication network 8. When communication with the external server 7 becomes impossible due to a power failure, the power failure period estimation unit 111 estimates the power failure period based on the acquired information.

  Returning to FIG. 3, the power generation amount estimation unit 112 estimates the amount of power generated by the power generation device 4 within the power failure estimation period estimated by the power failure period estimation unit 111. The power generation amount estimation unit 112 associates the weather forecast for the power failure estimation period acquired from the external server 7 immediately before the power failure with the solar radiation amount for each time of the season corresponding to the weather stored in the storage unit 102, Estimate the amount of solar radiation during the power outage estimation period. And the electric power generation amount estimation part 112 estimates the electric power generation amount which the electric power generating apparatus 4 produces | generates in time series from the estimated solar radiation amount and the characteristic data regarding the electric power generation amount of the electric power generating apparatus 4 with respect to the solar radiation amount. For example, the power generation amount estimation unit 112 has a power outage estimation period of 7 days and has acquired a 7-day weather forecast of “sunny, rainy, sunny, cloudy, sunny, cloudy, sunny”. Based on the corresponding solar radiation amount and the power generation amount corresponding to the solar radiation amount, a cumulative graph of the predicted power generation amount indicated by a one-dot chain line in FIG. 5 is created. Since the amount of solar radiation changes depending on the time even in the same weather, it is desirable to estimate the amount of power generation based on detailed data, for example, every 10 minutes.

  Returning to FIG. 3, the device use plan setting unit 113 stores the use plan of the device 1 during the power outage created by the user in the storage unit 102. For example, the device usage plan setting unit 113 displays an input screen as shown in FIG. 6 on the input / output terminal 9, and the user sets in advance a device usage plan that limits the usage time of the device 1 according to the scale of the power outage. Enable registration. That is, the user is provided with a life level setting screen corresponding to the power outage period. The user selects the power outage scale with the selection button shown in FIG. 6 and creates a device usage plan corresponding to the power outage scale. In the example shown in FIG. 6, five types of equipment use plans corresponding to the scale of power outages are created in advance. When the user presses the corresponding selection button, the power management apparatus 100 displays a device usage plan setting screen shown in FIG.

  FIG. 7 is an example of a device usage plan for a power outage period of 2 days. In the device display column 201, used devices corresponding to the power failure period are displayed. In the present embodiment, a case where a living room TV, a living room lighting, a living room air conditioner, a refrigerator, a children's room air conditioner, and a bedroom air conditioner will be described. The user sets the usage time for each device by using the selection button 206 shown in FIG. 7, and creates a device usage plan. As the power failure period becomes longer, the user shortens the usage time of the device displayed in the usage time display column 205 so that the total power consumption per day displayed in the total power amount display column 203 is reduced. Create a plan. When the device usage plan is created in advance, the power outage period and the amount of power generated during the power outage period are unknown, so the device usage plan setting unit 113 stores the created device usage plan in the storage unit 102 as an initial value. The device usage plan setting unit 113 updates the device usage plan when the user makes a request to change the device usage plan according to the power failure period when a power failure occurs. The user presses the setting button 220 in FIG. 7 when registering the created device usage plan.

  Returning to FIG. 3, the power consumption amount calculation unit 114 calculates the power consumption amount of the device 1 during the power failure estimation period based on the device usage plan. The power consumption calculation unit 114 adds the power consumption for each unit time and creates a cumulative graph of the power consumption in time series. For example, when based on the use plan illustrated in FIG. 7, the total power amount per day displayed in the total power amount display column 203 is 13 kWh, so the cumulative graph created by the power consumption amount calculation unit 114 is FIG. 5 is a cumulative graph indicated by a dotted line.

  Returning to FIG. 3, the power balance calculation unit 115 calculates the power amount stored in the power storage device 6, the power generation amount estimated by the power generation amount estimation unit 112, and the power consumption amount calculated by the power consumption amount calculation unit 114. The usable time of the device 1 is calculated. Specifically, the difference between the accumulated power consumption calculated by the power consumption amount calculation unit 114 and the accumulated power generation amount estimated by the power generation amount estimation unit 112 is larger than the power amount stored in the power storage device 6 immediately before the power failure. Find the time to increase. This is because at this time, the power stored in the power storage device 6 becomes empty and the device 1 cannot be used.

  Referring to FIG. 5, when the amount of power stored in the power storage device 6 is 10 kWh, the difference between the accumulated power consumption (solid line or dotted line) and the accumulated power generation amount (dashed line) The time until it becomes larger than the amount of power (10 kWh) stored in the power storage device 6 is calculated. For example, when a device is used based on the device usage plan shown in FIG. 7 in which the total power amount per day displayed in the total power amount display field 203 is 13 kWh, the cumulative graph of power consumption is shown by a dotted line in FIG. Since it becomes a graph, the device usable time is two days.

  Returning to FIG. 3, the display information generation unit 116 generates display information to be displayed on the input / output terminal 9. Specifically, the display information including FIGS. 5, 6, and 7 indicating the usage plan and the usable time of the device 1 is generated.

  The equipment operation management unit 117 controls the equipment 1 connected to the power management apparatus 100 based on the equipment usage plan. Specifically, the operation of the corresponding device 1 is controlled based on the device usage plan shown in FIG.

Here, the operation of the apparatus system 1000 having the above configuration will be described. The power management device 100 sequentially acquires information indicating the power consumption of the device 1, the power generation amount of the power generation device 4, and the power amount stored in the power storage device 6 from the energy measurement device 3, and manages the power of the device system 1000. To do. In addition, the power management apparatus 100 periodically acquires and stores information about disasters and accidents such as earthquakes that may cause power outages and weather forecasts for about one week ahead from the external server 7 during normal operation. Stored in the unit 102. Further, at the time of a power failure, the operation of the device 1 is controlled based on a device usage plan stored in advance.

  Next, a process for calculating a device usable time at the time of a power failure, which is a particularly characteristic function of the power management apparatus 100, will be described with reference to flowcharts shown in FIGS. FIG. 8 is a flowchart showing the overall operation of the power management apparatus 100. FIG. 9 is a flowchart for explaining the power failure period estimation processing. FIG. 10 is a flowchart for explaining the power generation amount estimation process. FIG. 11 is a flowchart for explaining the device usage plan setting process.

  The storage unit 102 of the power management apparatus 100 stores the weather (including disasters) illustrated in FIG. 4 and past power outage period data related to the accident, solar radiation data for each time corresponding to the weather acquired from the external server 7, power Data of power consumption for each operation mode of the device 1 connected to the management apparatus 100 is stored. Moreover, the use plan of the apparatus 1 at the time of the power failure corresponding to the power failure period illustrated in FIG. 7 is stored in advance.

  When the power management apparatus 100 detects the occurrence of a power outage using a known technique, the power management apparatus 100 starts the apparatus usable time calculation process flowchart shown in FIG. 8 and performs a power outage period estimation process (step S11). Details of the power failure period estimation process will be described with reference to FIG.

  When the power failure period estimation process is started, the power failure period estimation unit 111 determines whether or not communication with the external server 7 is possible (step S21). When communication with the external server 7 is possible (step S21: Yes), the power failure period information is acquired from the external server 7 (step S22), and the process is terminated. If communication with the external server 7 is not possible (step S21: No), the power failure period estimation unit 111 is periodically acquired from the external server 7 and stored in the storage unit 102 in information that may cause a power failure. From the storage unit 102, the information acquired last before the communication with the external server 7 becomes impossible is acquired (step S23). And the power failure period estimation part 111 estimates the power failure period with reference to the past power failure period data corresponding to the weather or the accident illustrated in FIG. 4 memorize | stored in the memory | storage part 102 (step S24).

  When the power failure period estimation process ends, the process proceeds to the power generation amount estimation process (step S12) shown in FIG. Details of the power generation amount estimation process will be described with reference to FIG.

  When the power generation amount estimation process is started, the power generation amount estimation unit 112 determines whether or not communication with the external server 7 is possible (step S31). When communication with the external server 7 is possible (step S31: Yes), the estimation information regarding the solar radiation amount during the power failure estimation period is acquired from the external server 7 (step S32). When communication with the external server 7 is not possible (step S31: No), the power generation amount estimation unit 112 acquires the external server from the weather forecast periodically obtained from the external server 7 and stored in the storage unit 102. The weather forecast acquired at the end before communication with 7 is lost is acquired from the storage unit 102 (step S33). Further, the power generation amount estimation unit 112 acquires the data of the amount of solar radiation corresponding to the weather from the storage unit 102 (step S34), and estimates the power outage from the weather forecast for the power outage estimation period and the data of the amount of solar radiation corresponding to the weather. The amount of solar radiation within the period is estimated (step S35).

  The power generation amount estimation unit 112 uses the estimated amount of solar radiation within the power failure estimation period and the characteristic data of the power generation device 4 regarding the amount of solar radiation and power generation stored in the storage unit 102 to determine whether the power generation device 4 is within the power failure estimation period. The amount of power to be generated is estimated (step S36). Specifically, the power generation amount is estimated for each unit time from the amount of solar radiation corresponding to the weather forecast within the power outage estimation period, and a cumulative graph of the power generation amount indicated by a one-dot chain line in FIG. 5 is created.

  When the power generation amount estimation process within the power failure estimation period ends, the process proceeds to the device usage plan setting process (step S13) shown in FIG. Details of the device usage plan setting process will be described with reference to FIG.

  When the device use plan setting process is started, the device use plan setting unit 113 estimates the power outage estimated by the power outage period estimation unit 111 from a plurality of device use plans corresponding to the power outage periods stored in the storage unit 102 in advance. A device usage plan corresponding to the period is selected, and the device usage plan is displayed on the display unit of the input / output terminal 9 via the display information generation unit 116 and the communication unit 101 (step S41). When the user does not input the change of the equipment use plan within the predetermined period (step S42: No), the process is terminated without performing any processing.

  When the user changes the setting of the equipment usage plan as necessary (step S42: Yes), the equipment usage plan setting unit 113 acquires the changed equipment usage plan (step S43) and stores it in the storage unit 102. Remember. When the device usage plan setting unit 113 acquires the changed device usage plan, the device usage plan setting process ends, and the process proceeds to step S14 shown in FIG.

  The power consumption calculation unit 114 calculates the power consumption consumed by the device 1 during the power failure estimation period based on the device usage plan (step S14). Specifically, the power consumption per unit time is calculated based on the last registered device usage plan, and a time-series cumulative graph of power consumption shown in FIG. 5 is created.

  The power balance calculation unit 115 predicts the power generation amount generated by the power generation device 4 within the power failure estimation period determined in step S12 and the power consumption consumed by the device 1 within the power failure estimation period determined in step S14. The usable time of the device 1 is calculated from the value and the amount of power stored in the power storage device 6 immediately before the power failure (step S15). Specifically, the power balance calculation unit 115 generates the power consumption (graph indicated by a dotted line in FIG. 5) created based on the last acquired device usage plan and the predicted power generation by the power generator 4 (one point in FIG. 5). The period up to 2 days after which the difference from the graph (shown by a chain line) is 10 kWh (the amount of power stored in the power storage device 6) or more is calculated as the device usable time.

  The display information generation unit 116 calculates the power outage estimation period 211, the power storage device remaining power amount 212, the predicted power generation amount 213, the power consumption amount calculation result 214, the insufficient power amount 215, and the device usable time 216 shown in FIG. The information is displayed on the display unit of the input / output terminal 9 via the communication unit 101 (step S16).

  The user who sees the calculation result adjusts the usage time 205 of each device 1 so that the device usable time 216 shown in FIG. 12 matches the blackout estimation period 211 as necessary, and according to the blackout period and the estimated power generation amount. Create an equipment usage plan. For example, when the power outage estimation period is 4 days, the equipment usable time 216 is matched with the power outage estimation period 211 by canceling the equipment use during the time indicated by the dotted line in FIG. When the user corrects the device usage plan (step S17: Yes), the control unit 103 returns to step S13 to perform the device usage plan setting process, and can use the device 1 based on the corrected device usage plan. Time is calculated (steps S13 to S16). Specifically, the power balance calculation unit 115 generates the power consumption (graph shown by a solid line in FIG. 5) created based on the corrected equipment use plan shown by the solid line in FIG. The period up to 4 days after which the difference from the graph (shown by the one-dot chain line in FIG. 5) is 10 kWh (the amount of power stored in the power storage device 6) or more is calculated as the device usable time. If there is no change input of the device usage plan by the user (step S17: No), the device usable time calculation process is terminated.

  As described above, when communication with the external server 7 is possible at the time of a power failure, the power management apparatus 100 determines the device usable time based on the power failure period information acquired from the external server 7 and the power generation amount prediction information. indicate. Thereby, the user can easily grasp the usable time of the device 1. When communication with the external server 7 is not possible, the power management apparatus 100 estimates the power outage period from the weather information and accident information acquired immediately before the power outage, and the power generation amount and power consumption of the device 1 within the estimated power outage period. The amount is estimated, and the usable time of the device 1 is displayed based on the amount of power stored in the power storage device 6. Thereby, even when communication with the external server 7 is not possible, the device usable time based on the power outage estimation period and the power generation amount within the power outage estimation period can be displayed.

  In the description of step S43 in FIG. 11, the example in which the usage time of the device 1 is changed has been described. However, the operation mode of the device 1 may be changed. For example, by changing the set temperature of the air conditioner, the air conditioner can be used for a long time with the same amount of power.

  Moreover, although the case where the information which may cause a power failure period, and the weather forecast are acquired from the external server 7 using FIG. 9 and FIG. 10 was demonstrated, you may enable it for a user to input directly. When the weather forecast stored in the storage unit 102 is different from the actual weather, it is desirable to correct the weather information. In addition, when information on a power outage period is acquired from a radio or the like, it is desirable to input information on a new power outage period.

  Further, in the description of the first embodiment, it has been described that the power generation amount data with respect to the power consumption of the device 1 and the solar radiation amount of the power generation device 4 is stored in the storage unit 102 in advance. The amount of power obtained by measuring the power generation efficiency, the amount of solar radiation information for each weather, the power consumption of the device 1, and the like stored in the storage unit 102 using the current detection device 2 and sequentially obtained from the energy measurement device 3. Correction may be made using the information shown.

  Moreover, you may make it estimate more exact electric power generation amount which considered the temperature characteristic (electric power generation efficiency) of the electric power generating apparatus 4 by acquiring temperature information using a temperature sensor etc. as needed.

  Further, the control by the device operation management unit 117 may be controlled so that the device 1 operates according to the time set in the device use plan. Moreover, you may control so that the apparatus 1 may be stopped by having passed the usable time of the day allocated for every apparatus as a trigger. Further, when the time when the device 1 is actually used is shorter than the usable time of one day, the device may be carried over to the usable device time after the next day.

  The current detection device 2 and the energy measurement device 3 may be included in other devices. For example, each device 1 may be built in, and each device 1 may measure its power consumption or current consumption and transmit it to the power management apparatus 100. In addition to the current sensor, the current detection device 2 may include a voltage sensor.

  Further, in order to facilitate understanding, the power generation amount estimation unit 112 and the power consumption amount calculation unit 114 have been described as creating the graph illustrated in FIG. 5, but subtraction processing using a table and an approximate expression were used. You may obtain | require apparatus useable time by numerical formula process etc.

  The power generation device 4 may be a power generation device using natural energy such as wind power or geothermal energy, fossil fuel such as city gas / LP gas / kerosene, hydrogen, and the like. When wind power generation is used, the power generation amount is estimated based on wind power information during the power outage period. In addition, when using fossil fuel or hydrogen, the power generation amount is calculated based on the accumulated fuel.

(Embodiment 2)
In the first embodiment, the technology for calculating the usable time of the device 1 based on the device usage plan set by the user has been described. In the second embodiment, a technique in which the power management apparatus 100 creates a device usage plan so that the device 1 can be continuously used until the power failure estimation period ends will be described.

  The control unit 103 according to the second embodiment changes and sets the usage time of the device 1 and the operation mode of the device 1 in the device usage plan so that the device 1 can be used until the power failure estimation period ends.

  For example, it is assumed that a power outage with a power outage estimation period of 7 days occurs and the power consumption per day of the equipment use plan for the power outage estimation period 7 days prepared in advance is 5 kWh (shown by a solid line in FIG. 12). Use plan). The cumulative graph of power consumption in this case is a solid line graph in FIG. Further, it is assumed that the estimated power generation amount generated by the power generation device 4 during this power failure estimation period is 17 kWh. Assume that the cumulative graph of the estimated power generation amount in this case is a graph indicated by a one-dot chain line in FIG. In this case, even when the power storage amount of the power storage device 6 is 10 kWh, the device usable time is 4 days, and the device 1 cannot be used for the remaining 3 days. Therefore, the control unit 103 performs a device usage plan correction process based on the flowchart shown in FIG. 13 so that the device 1 can be used for seven days.

  The description of the power failure period estimation process (step S51), the power generation amount estimation process (step S52), and the calculation of the power consumption amount (step S53) is the same as the description of the first embodiment, and will be omitted. The control unit 103 obtains an insufficient power amount at the end of the seventh day, which is the last day of the power failure estimation period (step S54). Specifically, the power consumption amount (5 kWh × 7 days = 35 kWh) of the device 1 during the power failure estimation period indicated by the solid line in FIG. 5, the power generation amount (17 kWh) by the power generation device 4 indicated by the alternate long and short dash line, and the power storage device 6 From the amount of stored power (assuming 10 kWh), the amount of insufficient power (about 8 kWh) after 7 days is calculated.

  From this calculation result, the control unit 103 obtains the usage time reduction rate of the device 1 necessary for using the device 1 until the end of the power failure estimation period (step S55). For the equipment usage plan shown in FIG. 12, the reduction rate is calculated as about 25% (≈8 kWh / 35 kWh).

  The control unit 103 corrects the device use plan so as to reduce each of the device use plan times shown in FIG. 12 by about 25% (step S56). FIG. 14 shows the device usage plan after correction. At this time, priority setting that does not stop the operation is possible for a device that needs to be operated for 24 hours, such as a refrigerator, or night illumination. Based on this equipment usage plan, the equipment operation management unit 117 controls the equipment 1 so that the equipment 1 can be used continuously for 7 days until the power failure is restored.

  As described in the second embodiment above, the trouble of adjusting the usage time of the device 1 can be eliminated by the controller 103 automatically setting the device usage plan of the device 1. In addition, after operating this automatic setting function, it is easier for the user to revise the device usage plan if the user reviews the device usage plan. Further, the user can use the device 1 without worrying that the device 1 cannot be used during the power failure estimation period.

  In the description of the second embodiment, it has been described that the usage time of the device 1 is uniformly reduced by 25%. However, a priority order may be provided for the device, and the use restriction may be performed in order from the device with the lowest priority. .

  Moreover, although it demonstrated that the apparatus usage plan according to a power failure period was input previously, when not having input previously, the control part 103 is registered according to the power failure scale shown in FIG. The power distribution may be performed on the “used devices” based on the priority assigned to each device 1. And you may perform control which stops the apparatus 1 applicable on condition that the allocated electric power is exceeded.

(Modification)
A modified example of the device usage plan setting and the device usage time display method will be described with reference to FIG. The device usage plan screen illustrated in FIG. 15 includes a device name 300, an average power consumption 301, a device usage scheduled time 302, and a power consumption amount representing the power consumption amount of the device obtained from the average power consumption 301 and the device usage scheduled time 302. A prediction 303, an OFF timer setting button 304 for selecting whether to automatically stop the operation of the device 1 when a pre-designated scheduled use time is exceeded, a cumulative power consumption prediction 305, The power storage device remaining power amount 306 and the predicted power generation amount 307 are configured.

  When a power failure occurs, when the user inputs the device usage scheduled time 302 of each device 1 during the power failure period, the power management apparatus 100 displays the usage schedule for each device 1 in a black circle on the power consumption prediction 303. Of the registered power consumption, the amount of power actually consumed is displayed as a white circle, and the remaining usable power amount is displayed as a black circle. The black area may be changed according to the power consumption of the device 1 using information indicating the amount of power measured using the current detection device 2 and sequentially acquired from the energy measurement device 3. Therefore, the user can know the device usable time by the black circle display. In addition, the power management apparatus 100 displays a cumulative power consumption prediction 305 obtained by adding up the power consumption predictions 303 of the devices 1 on the lower left, and displays the predicted power generation 307 generated by the power generation device 4 during the power failure estimation period on the right. Display below. Of the predicted power generation amount 307, the amount of power already consumed is displayed as a white circle. The black circle displays the remaining power amount 306 of the power storage device including the predicted power generation amount during the power failure period.

  The device operation management unit 117 performs control so as to stop the operation of the device 1 on which the OFF timer setting button 304 is pressed, on condition that the scheduled use time is exceeded.

  As described in the above embodiment, even when communication with the external server 7 is not possible, the power management apparatus 100 uses the estimated power consumption of the device 1 and the power stored in the power storage device 6 during the estimated power outage period. The usable time of the device 1 based on the device usage plan is calculated and displayed. Thereby, the user can easily grasp the usable time of the device 1.

  In addition, the power management apparatus 100 estimates the amount of power generated by the power generation apparatus 4 during the estimated power outage period. Thereby, it is possible to perform power management in consideration of the power generation amount during the power failure estimation period.

  Further, when the power generation device 4 is a power generation device using natural energy, the amount of power generated by the power generation device during the power failure period is estimated based on weather information within the power failure period. Thereby, the power management which considered the weather during a power failure estimation period can be performed.

  Further, the power management apparatus 100 controls the device 1 based on the device usage plan. Thereby, the user can use the device 1 without worrying that the device 1 cannot be used during the power failure estimation period.

  In addition, the power management apparatus 100 sets and registers a device usage plan so that the device 1 can be used continuously during a power failure. Thereby, the burden of the user who creates an apparatus use plan can be reduced.

  Even when communication with the external server 7 becomes impossible due to a power failure, the power management apparatus 100 uses the past data of the power failure period corresponding to the weather information or the accident information and the weather information or the accident information immediately before the power failure. , Guess the power outage period. Thereby, even when communication with the external server 7 is not possible, it is possible to create a use plan of the device 1 according to the power failure estimation period and perform power management.

  In addition, when the power management apparatus 100 can communicate with the external server 7, the power management apparatus 100 acquires information on the power failure period from the external server 7. Thereby, the power management corresponding to the more exact power failure period can be performed.

  Moreover, even when communication with the external server 7 becomes impossible due to a power failure, the power management device 100 generates the weather information of the power failure estimation period acquired before the power failure and the data on the amount of power generated by the power generation device 4 corresponding to the amount of solar radiation. From this, the power generation amount of the power generation device 4 during the power failure estimation period is estimated. Thereby, it is possible to perform power management by creating an appropriate use plan of the device 1 in consideration of the amount of power generated by the power generation device 4.

  Moreover, the power management apparatus 100 estimates the power generation amount of the power generation apparatus 4 during the power failure estimation period based on weather information input by the user. Thereby, even when the acquired weather information and the actual weather are different, it is possible to perform power management in accordance with the actual weather by correcting the weather information.

  In addition, when the power management apparatus 100 can communicate with the external server 7, the power management apparatus 100 acquires information on the power generation amount from the external server 7. Thereby, the power management corresponding to the more exact electric power generation amount can be performed.

  In the above description of the embodiment, it has been described that it is desirable to calculate the solar radiation amount data in units of about 10 minutes, but the time accuracy may be further increased. It is also desirable to calculate the power outage period estimation and equipment usage plan as time-series data in minutes. However, if detailed weather information or the like cannot be obtained, the power balance may be calculated on a daily basis, for example.

  In the above description, the power management during the power failure period has been described. However, in order to keep the daily power consumption below the target value, the device usage plan setting unit 113 may create a device usage plan. Estimate the amount of solar radiation from daily weather information and estimate the amount of power generation per day. From this estimated power generation amount, the device usage plan setting unit 113 creates a device usage plan so that the amount of power supplied from the power system 10 is less than or equal to the target value. Further, a device usage plan may be created from the actual power generation amount (the amount of power stored in the power storage device 6).

  In addition, the device system 1000 may use a hot water supply / storage device such as Ecocute as the device 1. In this case, energy can be stored as hot water. In this case, the power management apparatus 100 may manage the temperature and amount of hot water that can be used, as well as the amount of power that can be used.

  In addition to being able to provide a power management apparatus having a configuration for realizing the functions according to the present invention in advance, a program for realizing each functional configuration of the power management apparatus exemplified in the above embodiment can be used as an existing personal computer. By applying it so that CPU etc. which control a computer or an information terminal device can be performed, it can be made to function as a power management device concerning the present invention. The power management method according to the present invention can be implemented using a power management apparatus.

  Moreover, the application method of such a program is arbitrary. For example, the program can be applied by storing it in a computer-readable recording medium, or can be applied by storing the program in a server on a network such as the Internet and downloading it.

1 (1A, 1B, 1C) equipment, 2 (2A, 2B, 2C, 2D, 2E, 2F) current detection device, 3 energy measurement device, 4 power generation device, 5 power conversion device, 6 power storage device, 7 external server, 8 communication network, 9 input / output terminal, 10 power system (commercial power supply), 11 distribution board, 100 power management device, 101 communication unit, 102 storage unit, 103 control unit, 111 power failure period estimation unit, 112 power generation amount estimation unit , 113 device usage plan setting unit, 114 power consumption calculation unit, 115 power balance calculation unit, 116 display information generation unit, 117 device operation management unit, 201 device display column, 202 power consumption display column, 203 total power display Column, 204 total usage time display column, 205 usage time display column, 206 selection button, 211 power failure estimation period display column, 212 power storage device remaining power Amount display column, 213 predicted power generation amount display column, 214 power consumption calculation result display column, 215 insufficient power amount display column, 216 device usable time display column, 220 setting button, 300 device name, 301 average power consumption, 302 Estimated device usage time, 303 Power consumption prediction, 304 OFF timer setting button, 305 Cumulative power consumption prediction, 306 Power storage device remaining power, 307 Estimated power generation, 1000 Device system

Claims (13)

A first communication means for acquiring information about an event that can cause a power failure;
Storage means for storing information on an event that can cause the power failure acquired by the first communication means, and a device use plan that defines a use schedule of the device;
When a commercial power supply fails, obtain information on an event that can cause the power failure from the storage unit, and a power failure period estimation unit that estimates a power failure period of the commercial power source,
When a device that operates by receiving power supply based on the device usage plan is used, the amount of power consumed by the device is calculated within the power failure period of the commercial power source estimated by the power failure period estimation means. Power consumption calculation means;
From the amount of power stored in the power storage device and the amount of power consumption calculated by the power consumption amount calculation means, the device of the device with the amount of power stored in the power storage device during a power failure period of the commercial power supply A power balance calculation means for calculating an available time based on a usage plan;
Second communication means for transmitting information including a usable time of the device calculated by the power balance calculating means to a display device;
A power management apparatus comprising: It further comprises power generation amount estimation means for estimating the power generation amount generated by the power generation device that assists the commercial power supply during the power failure period of the commercial power source estimated from the weather information of the power failure period of the commercial power source. ,
The power balance calculation means is configured to calculate the power of the commercial power source from the amount of power stored in the power storage device, the power generation amount estimated by the power generation amount estimation means, and the power consumption amount calculated by the power consumption amount calculation means. The time in which the device can be used is calculated based on the device usage plan based on the amount of power stored in the power storage device during the power failure period and the amount of power estimated by the power generation amount estimation unit. Power management device. The power generator is a power generator using natural energy,
The power generation amount estimation means estimates the amount of solar radiation in the power outage period based on weather information in the power outage period of the commercial power source estimated by the power outage period estimation means, and the estimated amount of solar radiation during the power outage period The power management apparatus according to claim 2, wherein the power generation amount generated by the power generation apparatus is estimated.   The power failure period estimation so as to make the power consumption calculated by the power consumption calculation means smaller than the total power consumption of the power stored in the power storage device and the power generation estimated by the power generation estimation means. The power management apparatus according to claim 2 or 3, wherein the device use plan during the power outage period estimated by the means is created.   The power outage period estimation means acquires information that can be a cause of a power outage obtained from a weather or accident related information that can cause a power outage of the commercial power source stored in the storage means, and information that can be a cause of the acquired power outage The power management apparatus according to any one of claims 1 to 4, wherein the power failure period is estimated from data of a past power failure period corresponding to a weather or an accident that may cause a power failure of the commercial power supply.   The power management apparatus according to any one of claims 1 to 4, wherein the power failure period estimation unit obtains information about a power failure period from the external server when information about the power failure period can be obtained from an external server.   The power generation amount estimation means estimates the amount of solar radiation within a power outage period estimated by the power outage period estimation means from weather information acquired from an external server, and the power generation device corresponding to the amount of solar radiation stored in the storage means in advance generates power. The power management device according to any one of claims 2 to 4, wherein the power generation amount generated by the power generation device within a power failure period estimated by the power failure period estimation means is estimated from data on a power generation amount to be generated.   The power generation amount estimation means estimates the amount of solar radiation within the power outage period estimated by the power outage period estimation means from the weather information input by the user and the data of the amount of solar radiation corresponding to the weather information stored in advance in the storage means, The power generation amount generated by the power generator during a power outage period estimated by the power outage period estimation unit is estimated from data on the amount of power generated by the power generation device corresponding to the amount of solar radiation stored in advance in storage means. 5. The power management apparatus according to any one of items 1 to 4.   When the power generation amount estimation means can acquire, from an external server, information on the amount of power generated by the power generation device during a power failure period, information on the amount of power generation that can be generated by the power generation device during the power failure period from the external server. The power management apparatus according to claim 2, wherein the power management apparatus is acquired.   The power management apparatus according to any one of claims 1 to 9, further comprising a device operation management unit that controls an operation mode for determining a device usage time or a device power consumption based on the device use plan. A power generator for supplying power to assist commercial power,
A power storage device that stores the power of the commercial power source or the power generated by the power generation device, and
A first communication means for acquiring information that can cause a power failure;
Storage means for storing information that can cause the power failure acquired by the first communication means;
When the commercial power supply fails, obtain information that can cause a power failure of the commercial power supply from the storage means, and a power failure period estimation means for estimating a power failure period of the commercial power supply,
A device that operates by receiving power supply from any one of the commercial power source, the power generation device, and the power storage device calculates the amount of power consumed during the power failure period of the commercial power source estimated by the power failure period estimation unit. Power consumption calculation means;
Using the amount of power stored in the power storage device and the power consumption calculated by the power consumption amount calculation means, using the device with the amount of power stored in the power storage device during a power failure period of the commercial power supply Power balance calculation means for calculating possible time;
Second communication means for transmitting information including usable time of the device calculated by the power balance calculating means;
A power management device comprising:
An apparatus system comprising: Estimating the power outage period of the commercial power source from information that can cause a power outage of the commercial power source;
A device that operates by receiving power supplied from any one of the commercial power source, the power generation device, and the power storage device, and calculates a power consumption amount consumed within the estimated power failure period of the commercial power source; and
A step of calculating a time in which the device can be used with the amount of power stored in the power storage device during a power failure period of the commercial power source from the amount of power stored in the power storage device and the calculated power consumption When,
Power management method including. A power failure period estimating means for estimating a power failure period of the commercial power supply from information that may cause a power failure of the commercial power supply when the commercial power supply is interrupted by the computer;
Power consumption for calculating the amount of power consumed within the power failure period of the commercial power source estimated by the power failure period estimation means by a device that operates by receiving power supply from any one of the commercial power source, power generation device, and power storage device Amount calculation means,
Using the amount of power stored in the power storage device and the power consumption calculated by the power consumption amount calculation means, using the device with the amount of power stored in the power storage device during a power failure period of the commercial power supply Power balance calculation means for calculating possible time,
Program to function as.

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