JP2016220418A - Energy management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an energy management system capable of allowing planned patterns to easily reflect an intention of a user.SOLUTION: A planned pattern creation part 44 selects a plurality of planned patterns to create a planned pattern group. A presentation part 42a presents one planned pattern out of the planned pattern group. An operation part 42b is capable of accepting: a rejection operation to execution of one planned pattern presented by the presentation part 42a; and a correction operation for instructing correction of only a part of one planned pattern to a planned pattern correction part 46. Furthermore, the presentation part 42a, in the case where a rejection operation is performed to the execution of the presented one planned pattern, presents another planned pattern out of the planned pattern group, and on the other hand, in the case where a correction operation is performed to the presented one planned pattern, presents one planned pattern corrected by the planned pattern correction part 46.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an energy management system that stores electric power generated by a power generation device in a plurality of energy storage devices according to a planned pattern.

  In recent years, solar panels and fuel cells have been widely used in homes. Along with this, development of an energy management system that performs management in order to efficiently use the generated electric power in each home has become active.

  For example, Patent Document 1 listed below discloses an energy management system in which a storage battery is installed in each household in addition to a photovoltaic power generation system and a fuel cell, and efficiency is improved by integrated control of these batteries. The energy management system predicts the demand and supply amount of energy in each household, and calculates a plan pattern including a storage battery charge / discharge plan, a fuel cell power generation plan, and the like. The energy management system can optimize the energy balance in each household by controlling each device according to the plan pattern.

  Moreover, in the energy management system of the following patent document 1, the display for showing a plan pattern to a user is provided as a user interface. The user can confirm the plan pattern by looking at the display on the display unit, and can select whether to accept or reject the execution of the displayed plan pattern. Thereby, a user's intention can be reflected in execution of a plan pattern.

JP 2014-50275 A

  In the energy management system described in Patent Document 1, it is possible to obtain recalculation of a plan pattern when the displayed plan pattern is inconvenient for the user. However, in the energy management system, in order to acquire information necessary for recalculation, the user is forced to enter the information by operating the user interface, which is inconvenient to use. .

  Even if only a part of the displayed plan pattern is inconvenient, the user is requested to input information necessary for recalculation, as in the case where all of the plan pattern is inconvenient. Further, it takes more time to display a plan pattern suitable for the user's convenience, and there is a possibility that the usability will be worse.

  This invention is made | formed in view of such a subject, The objective is to provide the energy management system which can reflect a user's intention in a plan pattern easily.

  In order to solve the above-described problem, an energy management system according to the present invention is an energy management system that stores power generated by a power generation device (21) in a plurality of energy storage devices (23, 28, 29) according to a planned pattern ( 40), a plan pattern creating unit (44) for creating a plurality of plan patterns, and a plan pattern selecting unit (45) for selecting a predetermined plan pattern from among the plurality of plan patterns created by the plan pattern creating unit. ), A presentation unit (42a) for presenting the plan pattern selected by the plan pattern selection unit to the user, a plan pattern correction unit (46) for correcting the plan pattern, and an operation unit (42b) for accepting the user's operation . The plan pattern selection unit selects a plurality of plan patterns and creates a plan pattern group. The presenting unit presents one plan pattern from the plan pattern group. The operation unit can accept a refusal operation for execution of the one plan pattern presented by the presentation unit and a correction operation for instructing the plan pattern correction unit to correct only a part of the one plan pattern. Furthermore, when a rejection operation is performed for the execution of the presented one plan pattern, the presenting unit presents another plan pattern from the group of plan patterns, while correcting the presented one plan pattern. When is performed, the one planned pattern corrected by the planned pattern correcting unit is presented.

  In the present invention, the presentation unit first presents one plan pattern from the plan pattern group to the user. When the presented plan pattern is inconvenient for the user, the user can refuse to execute the plan pattern by operating the operation unit.

  When a rejection operation is performed for the execution of the presented plan pattern, the presentation unit then presents another plan pattern from the plan pattern group to the user. That is, when the user requests to present another plan pattern, the user is not required to input new information, and may perform a rejection operation for the execution of the presented plan pattern. Thereby, a user's intention can be easily reflected in a plan pattern.

  On the other hand, when the correction operation is performed on the presented one plan pattern, the presenting unit presents the one plan pattern corrected by the plan pattern correcting unit. The correction operation instructs the plan pattern correction unit to correct only a part of one plan pattern. That is, when only a part of the presented one plan pattern is inconvenient, the user is required to correct only a part of the one plan pattern when requesting presentation of another plan pattern. Just enter the information. Thereby, it is possible to reduce the time and effort for the user to input new information in order to correct one presented plan pattern.

  ADVANTAGE OF THE INVENTION According to this invention, the energy management system which can reflect a user's intention in a plan pattern easily is provided.

It is a figure which shows the example of application of the energy management system which concerns on embodiment of this invention. It is a flowchart which shows the flow of the process in preparation of a plan pattern. It is a table | surface which shows a seasonal condition. It is a table | surface which shows a weather condition. It is a table | surface which shows a day condition. It is a contrast table of each condition and a plan pattern index. It is a flowchart which shows the flow of a process in selection, correction, and execution of a plan pattern. It is a table | surface which shows the order of reliability of each condition. It is a table | surface which shows a plan pattern group. It is a time chart which shows an example of a plan pattern. It is a time chart which shows an example of the corrected plan pattern.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

  First, the user home 20 that is managed by the energy management system 40 according to the embodiment of the present invention will be described with reference to FIG.

  A solar power generation device 21 is installed in the user home 20. Specifically, the solar power generation device 21 generates power by directly converting solar energy into electric power in a solar panel (not shown) installed on the roof of the user's home 20.

  In addition, although demonstrated using the solar power generation device 21 as an example here as a power generation device, this invention is not limited to this. That is, it is possible to employ a fuel cell that generates power using city gas as the power generation device.

  The power conditioning system (PCS) 22 is a power converter that enables the power generated by the solar power generation device 21 to be used in the user home 20. Specifically, the PCS 22 converts the DC power generated by the solar power generation device 21 into AC power.

  The distribution board 24 is electrically connected to the PCS 22, and power is supplied from the solar power generation device 21 via the PCS 22. In addition, the distribution board 24 is also electrically connected to a system 27 that receives power supply from an electric power company by the user paying an electricity bill. The distribution board 24 distributes the electric power supplied from the solar power generation device 21 and the system 27.

  In addition, the distribution board 24 distributes the power supplied from the solar power generation device 21, the power supplied from the system 27, the power charged and discharged by the storage battery 23 and the electric vehicle 29 described later, and the distribution board 24 itself. It also functions as a measuring device that measures data related to power. Furthermore, the distribution board 24 also has a function as a recording device that records time changes of the measurement data and a function as a communication device that communicates with the HEMS device 42 described later.

  The electric power distributed in the distribution board 24 is distributed to the storage battery 23, the water heater 28, and the electric vehicle 29, which are energy storage devices, in addition to the home appliances 26 such as a refrigerator and lighting installed in the user's home 20.

  The storage battery 23 is a secondary battery that can be charged and discharged by storing electric power supplied from the distribution board 24 as electric energy. The electric power discharged from the storage battery 23 is distributed by the distribution board 24 and supplied to at least one of the home appliance 26, the water heater 28, and the storage battery 23.

  The charging stand 25 is a device that is installed in a garage or the like of the user's home 20 and supplies electric power to the stopped electric vehicle 29 and stores it as electric energy. Specifically, the charging stand 25 is electrically connected to the electric vehicle 29 by a cable and a plug, supplies power to a secondary battery mounted on the electric vehicle 29, and charges the secondary battery. is there. The electric power stored in the secondary battery can be used for running the electric vehicle 29 and can be supplied to the home appliance 26 via the distribution board 24. Hereinafter, charging the secondary battery mounted on the electric vehicle 29 may be simply referred to as “charging the electric vehicle 29”.

  The water heater 28 is an electric water heater that heats water using the power supplied from the distribution board 24 and stores the generated hot water. That is, the water heater 28 can be said to be an energy storage device that converts supplied electric power into heat energy and stores it by increasing the amount of hot water stored (increase in hot water). The hot water stored in the water heater 28 can be used for bathing and cooking at the user's home 20.

  The energy management system 40 manages the operation of each device in order to efficiently use power in the user home 20 as described above. The energy management system 40 includes a system main body 41 and a HEMS device 42. The system main body 41 is installed outside the user home 20, while the HEMS device 42 is installed inside the user home 20.

  The HEMS device 42 is formed in a panel shape, for example, and is installed on the wall surface of the user's home 20. The HEMS device 42 is connected to the storage battery 23, the distribution board 24, the charging stand 25, and the hot water heater 28 of the user's home 20 via a communication line, so that bidirectional communication is possible. The HEMS device 42 has a function as a control device that integrally controls the storage battery 23, the distribution board 24, the charging stand 25, and the water heater 28.

  Further, the HEMS device 42 can receive provision of data measured and recorded by the distribution board 24 by communicating with the distribution board 24. Furthermore, the HEMS apparatus 42 can receive provision of the data regarding the driving | running state of each apparatus by communicating with the storage battery 23, the charging stand 25, and the water heater 28. FIG. The HEMS device 42 also functions as a communication device that transmits various data thus provided to the system main body 41 via the network 30.

  The HEMS device 42 includes a presentation unit 42a and an operation unit 42b. The presentation unit 42 a and the operation unit 42 b are user interfaces provided in the HEMS device 42. Specifically, the presentation unit 42a is a liquid crystal panel capable of displaying arbitrary information. The liquid crystal panel is also a capacitive touch panel. The operation unit 42b is an operation button that is displayed on the liquid crystal panel and receives a user input operation.

  The user receives the operation status of the storage battery 23, the charging station 25, and the water heater 28, and the plan pattern for controlling each device, based on the information displayed on the presentation unit 42a. In addition, the user can operate the operation unit 42b to transmit control signals to the storage battery 23, the charging station 25, and the water heater 28, and remotely control each device as desired by the user.

  The system body 41 is installed at a predetermined location outside the user's home 20, and includes a data collection unit 43, a plan pattern creation unit 44, a plan pattern selection unit 45, a plan pattern correction unit 46, a control unit 47, a plan A database 48 and a performance database 49 are provided.

  The data collection unit 43 is a functional unit that collects data transmitted from the HEMS device 42 via the network 30 and weather forecast data available from the network 30. Each data collected by the data collection unit 43 is subjected to predetermined processing and then transmitted to a performance database 49 which is a storage device, and is registered as past performance data.

  The plan pattern creation unit 44 is a functional unit that creates a plan pattern for controlling the storage battery 23, the charging station 25, and the hot water heater 28 based on the record data stored in the record database 49. As will be described later, the plan pattern creation unit 44 creates a plurality of plan patterns and transmits them to the plan database 48 which is a storage device to register them.

  The plan pattern selection unit 45 is a functional unit that selects a predetermined plan pattern from a plurality of plan patterns registered in the plan database 48. As will be described later, the plan pattern is selected based on various conditions relating to the target date for managing the operation of the storage battery 23, the charging station 25, and the water heater 28.

  The plan pattern correction unit 46 is a part that corrects the plan pattern presented to the user by the presentation unit 42a. As will be described later, the plan pattern is corrected based on a correction operation performed by the user in the operation unit 42b.

  The control unit 47 is a control device that transmits control signals to the storage battery 23, the charging station 25, and the water heater 28 according to the planned pattern. The control signal is transmitted from the control unit 47 to the HEMS device 42 via the network 30 and further transmitted from the HEMS device 42 to each device. That is, when each device is controlled by the control unit 47, the HEMS device 42 transmits a control signal through both of them. Further, the control unit 47 controls the data collection unit 43, the plan pattern creation unit 44, the plan pattern selection unit 45, and the plan pattern correction unit 46.

  Moreover, the control part 47 displays on the presentation part 42a of the HEMS apparatus 42 one plan pattern to be performed, and makes a user present.

  Here, for example, in the presented plan pattern, when charging is planned in a time zone in which the user desires to use the electric vehicle 29 (that is, a time zone in which the electric vehicle 29 cannot be charged by the charging stand 25), etc. The planning pattern may be inconvenient for the user. In this case, the user can display an intention to reject the execution of the presented plan pattern by operating the operation unit 42b.

  When such a refusal operation is performed in the operation unit 42b, the control unit 47 displays one of the other plan patterns on the presentation unit 42a and presents it to the user. The user repeats the refusal operation until a plan pattern suitable for his / her convenience is presented. And when the plan pattern suitable for a user's convenience is shown to the presentation part 42a, the user can consent execution of the said plan pattern by performing consent operation in the operation part 42b.

  In addition, although some of the presented plan patterns are inconvenient for the user, there are cases where there is no inconvenience for other parts. For example, as described above, in the proposed plan pattern, charging is planned in a time zone in which the user desires to use the electric vehicle 29, but the time zone in which the storage battery 23 is charged and the hot water heater 28 is increased This is a case where there is no inconvenience for the user. In this case, the user can correct only a part of the presented plan pattern by operating the operation unit 42b. That is, the charging plan of the electric vehicle 29 can be corrected so that the electric vehicle 29 is charged in a time zone different from the time zone desired by the user.

  When such a correction operation is performed in the operation unit 42b, the control unit 47 causes the plan pattern correction unit 46 to correct the plan pattern. That is, the charging plan of the electric vehicle 29 is corrected in the presented plan pattern so that the electric vehicle 29 is charged in a time zone different from the time zone desired by the user. Further, based on the revised charging plan for the electric vehicle 29, the plan for charging the storage battery 23 and adding hot water to the hot water heater 28 is corrected so as to minimize the electricity bill that the user needs to pay to the electric utility. .

  The control unit 47 displays the plan pattern corrected by the plan pattern correction unit 46 in this way and the electricity charge when the plan pattern is executed on the presentation unit 42a and presents it to the user. The user looks at the display of the presentation unit 42a and confirms the corrected plan pattern and the electricity charge. And when they are corrected to the thing suitable for the user's own convenience, the user can consent execution of the said plan pattern by performing consent operation in the operation part 42b.

  The control unit 47 transmits a control signal according to the plan pattern approved by the user. The storage battery 23, the charging stand 25, and the hot water heater 28 that receive the control signal via the network 30 and the HEMS device 42 perform charge / discharge or hot water increase based on the control signal.

  Next, creation of a plan pattern by the energy management system 40 according to the embodiment of the present invention will be described with reference to FIGS. 2 to 6.

  As described above, the plan pattern creation unit 44 creates a plan pattern for controlling the storage battery 23, the charging stand 25, and the water heater 28 based on the record data stored in the record database 49. FIG. 2 shows the flow of processing in the plan pattern creation unit 44.

  The plan pattern creation unit 44 first acquires environment information on the target date from the network 30. A target day here means the day used as the sample for producing a plan pattern based on the performance data of the storage battery 23, the charge stand 25, and the water heater 28. FIG. The environmental information here is the weather forecast data and the day of the week (July) data of the target day.

  Next, the plan pattern creation unit 44 specifies the plan pattern index α on the target day in step S22. Hereinafter, the specification of the plan pattern index α will be described in detail.

  The plan pattern creation unit 44 compares the date of the target day with the seasonal condition table shown in FIG. 3, and sets the seasonal condition of the target day to “spring”, “summer”, “autumn”, or “winter”. Set to. For example, when the target date is March 10, the seasonal condition of the target date is set to “spring”. In this seasonal condition table, priority is set for “Spring”, “Summer”, “Autumn”, and “Winter” in each period divided into 8 periods. Set to the highest season.

  Further, the plan pattern creation unit 44 compares the weather forecast data for the target day with the weather condition table shown in FIG. 4 and sets the weather conditions for the target day to “sunny”, “sunny”, “cloudy”, “rainy”. Set to one of the following. For example, when the weather forecast data for March 10th, which is the target day, is “sunny”, the weather condition for the target day is set to “sunny”. In this weather condition table, the priority is set to “sunny”, “sunny”, “cloudy”, and “rain” in each of the four categories of weather. Here, the priority is the highest. Set to high weather.

  The plan pattern creation unit 44 compares the day of the week data with the day of the week condition table shown in FIG. 5, and sets the day of the week for the target day to “weekdays” (Monday to Friday), “Saturday”, “Holidays”.・ Apply to “Sunday”. This is because, generally, user behavior patterns can be roughly classified into “weekdays”, “Saturday”, or “holidays / Sundays”, and the power usage pattern by the user also differs depending on the classification. That is, the user's behavior can be roughly predicted based on the day of the week data. For example, in a certain user's home 20, if it can be predicted that the electric vehicle 29 is less likely to be used in the daytime in “weekdays” than in “Saturday” and “holiday / Sunday”, the planning pattern creation unit 44 is in the daytime. A plan pattern for charging the electric vehicle 29 can be created.

  If the target day is a weekday holiday, it is applied to “holiday / Sunday”. Then, according to the applied category, the day of the week condition for the target day is set to either “working day” or “holiday”. For example, if March 10th, which is the target day, is a Monday, the day condition for the target day is set to “working day”. In the day-of-week condition table, priority levels are set for “working days” and “holidays” in each of the three categories of days of the week.

  Furthermore, the plan pattern creation unit 44 applies the combination of the season condition, the weather condition, and the day condition set as described above to the table of the plan pattern index α shown in FIG. Then, according to the applied classification, it is specified whether the target day's plan pattern index α corresponds to 1 to 32. For example, when the target date is March 10, as described above, “Spring” is set as the seasonal condition, “Sunny” is set as the weather condition, and “Working day” is set as the day-of-week condition. Based on the table, “2” is specified as the plan pattern index α.

  Returning to FIG. 2, the description regarding the creation of the plan pattern will be continued. Next, in step S23, the plan pattern creation unit 44 acquires energy usage record data for one day on the target day. For example, when the target date is March 10, actual data on the electric power generated by the photovoltaic power generation device 21 on that day, charging / discharging in the storage battery 23 and the electric vehicle 29, and energy stored in the water heater 28 Is obtained from the results database 49.

  Next, the plan pattern creation unit 44 determines whether or not the plan pattern corresponding to the plan pattern index α is already registered in the plan database 48 in step S24. Taking the case where the target date is March 10 as an example, the seasonal condition corresponding to the plan pattern index α of “2” is “spring”, the weather condition is “sunny”, and the day condition is “working day”. It is determined whether or not the plan pattern is already registered in the plan database 48.

  When it is determined that the plan pattern corresponding to the plan pattern index α is already registered in the plan database 48 (S24: Yes), the plan pattern creation unit 44 corrects the plan pattern in step S25. That is, in order to increase the validity of the plan pattern, the already registered plan pattern is corrected based on the latest result data.

  Next, the plan pattern creation unit 44 registers the revised plan pattern in the plan database 48 in step S27. In the plan database 48, the plan pattern corresponding to the plan pattern index α previously registered is also rewritten and registered with the plan pattern corresponding to the plan pattern index α and having been corrected.

  On the other hand, when it is determined that the plan pattern corresponding to the plan pattern index α is not registered in the plan database 48 (S24: No), the plan pattern creation unit 44 uses the actual data of the target date as the plan pattern index α. Set as the corresponding planning pattern. Then, the plan pattern creation unit 44 registers the created plan pattern in the plan database 48 in step S27.

  Next, the selection, correction and execution of the plan pattern by the energy management system 40 according to the embodiment of the present invention will be described with reference to FIGS.

  As described above, the plan pattern selection unit 45 selects a predetermined plan pattern from a plurality of plan patterns registered in the plan database 48. Moreover, the control part 47 transmits a control signal to the storage battery 23, the charging stand 25, and the water heater 28 according to the selected plan pattern.

  FIG. 7 shows the flow of processing in the control unit 47. In step S <b> 71, the control unit 47 causes the plan pattern selection unit 45 to acquire environment information for the target date from the network 30. A target day here means the day which is going to control the storage battery 23, the charging stand 25, and the hot water heater 28 according to a plan pattern. The environmental information here is the weather forecast data and the day of the week (July) data of the target day.

  Next, the plan pattern selection unit 45 causes the plan pattern selection unit 45 to create a plan pattern group in step S72. Hereinafter, the creation of the planned pattern group will be described in detail.

  Based on the environmental information acquired in step S71, the plan pattern selection unit 45 identifies three target day plan pattern indexes α on which to control the storage battery 23 and the like, as in the case of the plan pattern creation described above. . For example, if the target date is March 10, as described above, “Spring” is set as the seasonal condition, “Sunny” is set as the weather condition, and “Working day” is set as the day-of-week condition. Based on the table of the pattern index α, “2” is first specified as the first planned pattern index α.

  Next, the plan pattern selection unit 45 specifies the second and third plan pattern indices α by slightly changing the conditions set for specifying the plan pattern index α.

  Here, the setting of each condition is appropriately changed based on each condition shown in FIG. 8 and its reliability table. More specifically, as shown in FIG. 8, three levels of reliability of “low”, “medium”, and “high” are preset for the season condition, the weather condition, and the day of the week condition. In specifying the second and third plan pattern indices α, the plan pattern selection unit 45 sets from the seasonal conditions with low reliability among the seasonal conditions, weather conditions, and day conditions of the first plan pattern index α. By changing, the second and third plan pattern indices α are specified.

  For example, when the target date is March 10, as described above, “spring” is set as the seasonal condition, “sunny” as the weather condition, and “working day” as the day condition. In order to identify the second plan pattern index α, the plan pattern selection unit 45 sets the season condition with the lowest reliability among them from “spring” to “spring”, which has the next highest priority. Change to "Winter". Here, the priority order is set in the seasonal condition table shown in FIG.

  In this case, “winter” is set as the seasonal condition, “sunny” as the weather condition, and “working day” as the day condition. The plan pattern selection unit 45 applies the combination of the seasonal condition, weather condition, and day of the week condition set as described above to the plan pattern index table shown in FIG. 6, and sets “26” as the second plan pattern index α. Is identified.

  In addition, the plan pattern selection unit 45 sets the weather condition setting that is the second least reliable next to the seasonal condition in order to identify the third plan pattern index α, from “sunny” to “sunny”. Change to high “cloudy”. Here, the priority order is set in the weather condition table shown in FIG.

  In this case, “spring” is set as the seasonal condition, “cloudy” as the weather condition, and “working day” as the day condition. The plan pattern selection unit 45 applies the combination of the season condition, the weather condition, and the day condition set as described above to the plan pattern index table shown in FIG. 6, and sets “3” as the third plan pattern index α. Is identified.

  As described above, when the first to third plan pattern indices α are specified by the plan pattern selection unit 45, a plan pattern group including three plan patterns is created as shown in FIG. . Among the three plan patterns constituting the plan pattern group, the first plan pattern index α in which “2” is specified has the highest reliability, and the third plan pattern in which “3” is specified. The index α is set as the one with the lowest reliability.

  Returning to FIG. 7, the description regarding the selection, correction and execution of the plan pattern will be continued. Next, in step S73, the control unit 47 causes the presentation unit 42a to present the most reliable plan pattern from the plan pattern group created in step S72. Taking the case where the target date is March 10 as an example, the control unit 47 selects a plan pattern corresponding to the first plan pattern index α having the highest reliability from the plan pattern group shown in FIG. Is displayed on the presentation unit 42a of the HEMS device 42 to present it to the user.

  As shown in FIG. 10, the presentation unit 42 a displays a plan pattern including a plan for charging / discharging the electric vehicle 29 and the storage battery 23 over a 24-hour period on the target day and a plan for increasing the hot water supply 28. Is done. In addition, below the plans for the electric vehicle 29, the storage battery 23, and the water heater 28, changes in the charge amount and the hot water storage amount that are expected when the plan is executed are displayed. Furthermore, the electricity bill which needs to be paid to an electric power company when the said plan pattern is performed is displayed on the lower part of the presentation part 42a.

  In the plan pattern corresponding to the first plan pattern index α, as shown in FIG. 10, sunshine can be expected, and the solar vehicle 21 can expect relatively high-efficiency power generation in the morning and daytime, The storage battery 23 is charged, and the hot water heater 28 adds water. On the other hand, the storage battery 23 is set to discharge at night when the user is expected to use a large amount of power. The user can see such a display on the presentation unit 42a, confirm the plan pattern that the energy management system 40 intends to execute from now on, and determine whether it is suitable for his or her convenience.

  The plan pattern presented by the presentation unit 42a may be inconvenient for the user. The plan pattern shown in FIG. 10 will be described as an example. On the day, the user has a plan to go out using the electric vehicle 29 in a time zone (16:00 to 18:00) where charging of the electric vehicle 29 is planned. This is a case where the user has a plan to take a bath in a time zone (9:00 to 12:00) in which hot water is added to the water heater 28. In this case, the user can display an intention to reject the execution of the presented plan pattern by operating the operation unit 42b.

  In step S74, the controller 47 determines the user's intention. That is, it is determined whether the user has performed a rejection operation, an acceptance operation, or a correction operation on the operation unit 42b with respect to the plan pattern presented by the presentation unit 42a. And when it determines with consent operation being made in the operation part 42b (S74: consent), the plan pattern which the presentation part 42a showed is performed by following step S77. In addition to the case where the consent operation is performed in the operation unit 42b, the presented plan pattern can be set to be executed even when the operation unit 42b is not operated for a certain period of time.

  On the other hand, when it is determined that the refusal operation has been performed in the operation unit 42b (S74: refusal), the control unit 47 replaces the plan pattern corresponding to the first plan pattern index α that has been presented to the presentation unit 42a until then. To present a new planning pattern. The new plan pattern here has the second highest reliability (reliability: medium) next to the plan pattern corresponding to the first plan pattern index α in the plan pattern group shown in FIG. This is a plan pattern corresponding to the plan pattern index α.

  The user who performed the refusal operation in the operation unit 42b can check the new plan pattern presented by the presentation unit 42a and determine whether it is suitable for his or her convenience. And when execution of the new plan pattern presented by the presentation unit 42a is performed by the user through the operation unit 42b (S74: Accept), the control unit 47 causes the HEMS device 42 to perform the next step S77. A control signal is transmitted to execute the planned pattern.

  On the other hand, when it is determined that the user has performed a refusal operation in the operation unit 42b with respect to the execution of the new plan pattern presented by the presentation unit 42a (S74: Rejection), the control unit 47 presents the presentation unit 42a until then. Instead of the plan pattern corresponding to the second plan pattern index α, the new plan pattern is presented. The new plan pattern here has the second highest reliability after the plan pattern corresponding to the second plan pattern index α in the plan pattern group shown in FIG. This is a plan pattern corresponding to the plan pattern index α.

  After that, as described above, the user can confirm the new plan pattern again with the presentation unit 42a and can display an intention to accept or reject the execution.

  In addition, as a case where the plan pattern presented by the presentation unit 42a is inconvenient for the user, a part of the plan pattern is inconvenient for the user, but there are cases where there is no inconvenience for the other parts. The plan pattern shown in FIG. 10 will be described as an example. Although the user plans to go out using the electric vehicle 29 at the time when charging of the electric vehicle 29 is planned on that day, the charging / discharging of the storage battery 23 is performed. The plan and the plan for increasing the hot water heater 28 are cases where there is no inconvenience for the user.

  In this case, the user can display an intention to correct the presented plan pattern by operating the operation unit 42b. That is, the user can perform a correction operation on the operation unit 42b so as to charge the electric vehicle 29 in a time zone different from the time zone scheduled to go out. At this time, the user does not need to perform a correction operation for the plan related to charging / discharging of the storage battery and the hot water supply of the water heater 28.

  When such a correction operation is performed in the operation unit 42b, the control unit 47 causes the plan pattern correction unit 46 to correct the plan pattern presented by the presentation unit 42a. Specifically, as shown in FIG. 11, the control unit 47 charges the electric vehicle 29 in a time zone (12:30 to 14:30) that is different from the time zone in which the user is scheduled to go out. As described above, the plan pattern correction unit 46 corrects the plan pattern. Moreover, the plan pattern correction unit 46 corrects the plan for charging the storage battery 23 and increasing the hot water heater 28 so as to minimize the electricity bill that the user needs to pay to the electric utility. Each time the user performs a correction operation, the corrected plan pattern is displayed on the presentation unit 42a.

  When it is determined in step S74 shown in FIG. 7 that the plan pattern has been corrected by the user (S74: correction), the control unit 47 proceeds to the process of step S76.

  Next, the control part 47 makes the presentation part 42a present the electricity bill which a user needs to pay to an electric power provider, when a corrected plan pattern is performed by step S76. A user confirms the said electricity bill by the presentation part 42a, and approves or refuses execution of the corrected plan pattern, and considers the correction of the plan pattern again.

  Next, the control part 47 determines a user's intention again by step S74. The control unit 47 repeatedly performs the above-described processing until it is determined that the consent operation has been performed in the operation unit 42b with respect to the plan pattern presented by the presentation unit 42a.

  As described above, in the energy management system 40, the presentation unit 42a first presents one plan pattern from the plan pattern group to the user. If the presented plan pattern is inconvenient for the user, the user can refuse to execute the plan pattern by operating the operation unit 42b.

  When a rejection operation is performed for the execution of the presented plan pattern, the presentation unit 42a then presents another plan pattern from the plan pattern group to the user. That is, when the user requests to present another plan pattern, the user is not required to input information and may perform a refusal operation on the execution of the presented plan pattern. Thereby, a user's intention can be easily reflected in a plan pattern.

  On the other hand, when a correction operation is performed on the presented plan pattern, the presentation unit 42 a presents the plan pattern corrected by the plan pattern correction unit 46. The correction operation instructs the plan pattern correction unit 46 to correct only a part of the plan pattern. That is, when only a part of the presented plan pattern is inconvenient, the user can input information necessary for correcting only a part of the plan pattern when requesting presentation of another plan pattern. That's fine. Thereby, it is possible to reduce the time and effort for the user to input new information in order to correct the presented plan pattern.

  In the energy management system 40, the presentation unit 42a sequentially presents the plan pattern to the user from the plan pattern group according to a predetermined priority order. Thereby, execution is sequentially presented from the plan pattern that is accepted (not rejected) by the user, and the user's reject operation can be reduced.

  Moreover, in the energy management system 40, the presentation part 42a presents the electricity bill which needs to be paid to an electric power company when the said plan pattern is performed with the corrected plan pattern. Thereby, the user can correct the plan pattern while considering the balance between his / her convenience and the electricity bill.

  Moreover, in the energy management system 40, the water heater 28 which heats and stores water with electric power is included as an energy storage device which stores the electric power which the solar power generation device 21 generated. That is, it is possible to create various planning patterns by adding a hot water heater 28 that stores electric power as thermal energy to the storage battery 23 and electric vehicle 29 that store electric power as electric energy.

  The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. In other words, those specific examples that have been appropriately modified by those skilled in the art are also included in the scope of the present invention as long as they have the characteristics of the present invention. For example, the elements included in each of the specific examples described above and their arrangements are not limited to those illustrated, but can be changed as appropriate.

  For example, in the description of the above embodiment, only the charging plan of the electric vehicle 29 is shown as a part of the plan pattern to be corrected, but the present invention is not limited to this. That is, the charging / discharging plan of the storage battery 23 can be set as a correction target together with the charging plan of the electric vehicle 29 as a part of the plan pattern. That is, it is also possible to correct a plurality of charge / discharge plans and hot water storage plans as part of the plan pattern.

21: Solar power generation device (power generation device)
23: Storage battery (energy storage device)
28: Water heater (energy storage device)
29: Electric vehicle (energy storage device)
40: Energy management system 42a: Presentation unit 42b: Operation unit 44: Plan pattern creation unit 45: Plan pattern selection unit 46: Plan pattern correction unit

Claims (4)

An energy management system (40) for storing power generated by a power generation device (21) in a plurality of energy storage devices (23, 28, 29) according to a planned pattern,
A plan pattern creating unit (44) for creating a plurality of the plan patterns;
A plan pattern selection unit (45) for selecting a predetermined plan pattern from the plurality of plan patterns created by the plan pattern creation unit;
A presentation unit (42a) for presenting to the user the plan pattern selected by the plan pattern selection unit;
A plan pattern correcting unit (46) for correcting the plan pattern;
An operation unit (42b) for receiving a user operation,
The plan pattern selection unit creates a plan pattern group by selecting a plurality of the plan patterns,
The presenting unit presents one plan pattern from the plan pattern group,
The operation unit can accept a rejection operation for execution of the one plan pattern presented by the presentation unit and a correction operation for instructing the plan pattern correction unit to correct only a part of the one plan pattern And
Furthermore, when the rejection operation is performed for the execution of the one presented plan pattern, the presenting unit presents the other one of the plan patterns from the group of plan patterns, while the one presented When the correction operation is performed on the planned pattern, the energy management system presenting the one planned pattern corrected by the planned pattern correcting unit.   The energy management system according to claim 1, wherein the presenting unit presents the plan patterns sequentially from the plan pattern group according to a predetermined priority order.   2. The energy management system according to claim 1, wherein the presenting unit presents, together with the modified one of the plan patterns, an electricity bill that needs to be paid to an electric utility when the plan pattern is executed. .   The energy management system according to any one of claims 1 to 3, wherein the energy storage device includes a water heater (28) that heats and stores water with electric power.

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