JP6358056B2 - Energy management system - Google Patents

Description

  The present invention relates to an energy management system that performs energy management according to a plan 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. In the energy management system, the demand amount and supply amount of energy in each household are predicted, and plan patterns such as a storage battery charge / discharge schedule and a fuel cell power generation schedule are calculated. It is possible to 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 contents displayed on the display, and can select whether to allow 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, it is difficult for the user to input information necessary for the recalculation by operating the user interface, which is inconvenient to use.

  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 problem, an energy management system (40) according to the present invention causes an energy storage device (23, 28, 29) to store electric power generated by a power generation device (21) according to a planned pattern. A plan pattern creating unit (44) for creating a plurality of plan patterns, a plan pattern selecting unit (45) for selecting a predetermined plan pattern from the plurality of plan patterns created by the plan pattern creating unit, A presentation unit (42a) that presents the plan pattern selected by the plan pattern selection unit to the user, and an operation unit (42b) that the user operates to reject the execution of the plan pattern presented by the presentation unit. The The plan pattern creation unit creates a plurality of plan patterns having a mode according to the contents of a plurality of predetermined conditions. The reliability is preset for each predetermined condition. The plan pattern selection unit selects the first plan pattern which is one plan pattern, changes the content of the predetermined condition with relatively low reliability among the plurality of predetermined conditions in the first plan pattern, and after the change A plan pattern group including a first plan pattern and a second plan pattern is created by selecting a second plan pattern that is a plan pattern having a mode corresponding to the contents of the predetermined condition. The presenting unit presents only the first plan pattern from the plan pattern group, and when the operation unit rejects the execution of the first plan pattern, the second plan pattern is selected from the plan pattern group. Present only.

  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 in the operation unit with respect to the execution of the presented plan pattern, the presenting 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.

  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 the process in selection 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.

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

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

  The energy management system 40 will be described using the solar power generation device 21 as an example of the power generation device, but the present 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 supplies electric power from an electric power company. Thereby, 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.

Power distributed in the distribution board 24, other home appliances 26 refrigerators, lighting or the like which is installed in the user's home 20, is distributed to the battery 23, the water heater 28 and the electric vehicle 29 is a energy storage device.

  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 at the time of discharge of the storage battery 23 is distributed by the distribution board 24 and supplied to at least one of the home appliances 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 is a system that 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 receives a user input operation displayed on the liquid crystal panel.

  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 main 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 control unit 46, a plan database 47, and a performance database 48. And have.

  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 the performance database 48 which is a storage device and 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 water heater 28 based on the record data stored in the record database 48. As will be described later, the plan pattern creating unit 44 creates a plurality of plan patterns and transmits them to the plan database 47 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 47. 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 control unit 46 is a control device that transmits control signals to the storage battery 23, the charging stand 25, and the water heater 28 according to the planned pattern. The control signal is transmitted from the control unit 46 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 46, the HEMS device 42 transmits a control signal through both of them.

  Moreover, the control part 46 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 46 causes the presentation unit 42a to display one of the other plan patterns to be presented 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 own convenience is shown to the presentation part 42a, permission operation can be performed in the operation part 42b, and execution of the said plan pattern can be permitted.

  The control unit 46 transmits a control signal according to the plan pattern permitted 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 48. 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 20's house, 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 may 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 48.

  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 47 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 47.

  When it is determined that the plan pattern corresponding to the plan pattern index α is already registered in the plan database 47 (S24: Yes), the plan pattern creation unit 44 corrects the plan pattern. 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 corrected plan pattern in the plan database 47. In the plan database 47, the plan pattern corresponding to the previously registered plan pattern index α is rewritten and registered with the plan pattern corresponding to the plan pattern index α that has 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 47 (S24: No), the plan pattern creation unit 44 uses the actual data of the target day 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 47 in step S27.

  Next, the selection 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 47. Moreover, the control part 46 transmits a control signal to the storage battery 23, the charging stand 25, and the water heater 28 according to the selected plan pattern.

  As illustrated in FIG. 7, the plan pattern selection unit 45 acquires the environment information of the target date from the network 30 in step S71. 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 creates 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 index in which “3” is specified. α is set as the least reliable.

  Returning to FIG. 7, the description regarding the selection and execution of the plan pattern will be continued. Next, in step S73, the control unit 46 presents the most reliable plan pattern to the user 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 46 selects the 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, a plan pattern of charging / discharging in the electric vehicle 29 and the storage battery 23 and increasing hot water in the water heater 28 is displayed on the presentation unit 42 a as shown in FIG. 10. In the example shown in FIG. 10, the plan pattern from 8:00 on the current day (today) to 8:00 on the next day is displayed.

  In the plan pattern corresponding to the first plan pattern index α, as shown in FIG. 10, the sunshine can be expected, and the electric vehicle 29 and the storage battery 23 can be expected in the daytime when the solar power generation device 21 can expect relatively high-efficiency power generation. After being charged, the water heater 28 adds water. On the other hand, the electric vehicle 29 and the storage battery 23 are set to discharge at night when the user is expected to use a large amount of power. The user sees such a display on the presentation unit 42a, confirms the contents of the plan pattern that the energy management system 40 intends to execute from now on, and determines whether or not it is suitable for his / her convenience. it can.

  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 when the user is scheduled to go out using the electric vehicle 29 during the day and the electric vehicle 29 cannot be charged according to the presented plan pattern. 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 control unit 46 determines whether or not a rejection operation has been performed in the operation unit 42b. And when rejection operation is not made in the operation part 42b (S74: No), the plan pattern shown by the presentation part 42a is performed by following step S76. In addition to the case where the refusal operation is not performed in the operation unit 42b, it is also possible to set the presented plan pattern to be executed when a permission operation is performed in the operation unit 42b.

  On the other hand, if a refusal operation is performed in the operation unit 42b (S74: Yes), the control unit 46 replaces the plan pattern corresponding to the first plan pattern index α that has been presented in the presentation unit 42a until then with a new one. To present a simple 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 has performed the refusal operation in the operation unit 42b can check the new plan pattern presented in the presentation unit 42a and determine whether it is suitable for his or her convenience. And the user can display the intention of refusal with respect to execution of the new plan pattern shown by operating the operation part 42b.

  When the user does not perform the refusal operation in the operation unit 42b with respect to the execution of the new plan pattern presented in the presentation unit 42a (S74: No), the control unit 46 performs the next step S76 in the presentation unit 42a. Execute the proposed planning pattern.

  On the other hand, when the user performs a refusal operation on the operation unit 42b with respect to the execution of the new plan pattern presented by the presentation unit 42a (S74: Yes), the control unit 46 has caused the presentation unit 42a to present it until then. Instead of the plan pattern corresponding to the second plan pattern index α, a new plan pattern is presented. The new plan pattern here is the third most reliable pattern pattern corresponding to the second plan pattern index α in the group of plan patterns shown in FIG. 9 (reliability: low). This is a plan pattern corresponding to the plan pattern index α.

  Thereafter, as described above, the user can confirm the new plan pattern again with the presentation unit 42a and can display a rejection intention for the execution.

  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 in the operation unit 42b with respect to 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.

  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 can be sequentially presented from the plan patterns permitted (not rejected) to the user, and the user's rejection operation can be reduced.

  In the energy management system 40, the plan pattern creation unit 44 creates a plurality of plan patterns based on the prediction of the user's behavior. In other words, the plan pattern creation unit 44 predicts user behavior based on day-of-week data and creates a plurality of plan patterns based on the prediction. Therefore, the plan pattern creation unit 44 can create a plan pattern more suitable for the convenience of the user.

  In addition, the energy management system 40 includes an electric vehicle 29 that stores electric power and can travel with the electric power as an energy storage device that stores electric power generated by the solar power generation device 21. The plan pattern creation unit 44 creates a plurality of plan patterns based on the use prediction of the electric vehicle 29 by the user. For this reason, it is possible to create a plan pattern more suitable for the convenience of the user in consideration of the situation where the user is using the electric vehicle 29 and cannot be charged.

  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 arrangement, materials, conditions, shapes, sizes, and the like are not limited to those illustrated, but can be changed as appropriate. Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

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

Claims (5)

An energy management system (40) for storing electric power generated by the power generation device (21) in an energy storage device (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;
An operation unit (42b) operated by a user to reject execution of the plan pattern presented by the presentation unit;
The plan pattern creation unit creates a plurality of the plan patterns in an aspect according to the contents of a plurality of predetermined conditions,
Each of the predetermined conditions has its reliability set in advance,
The plan pattern selection unit
Selecting a first planning pattern which is one of the planning patterns;
Of the plurality of the predetermined conditions in the first plan pattern, the content of the predetermined condition having relatively low reliability is changed, and the plan pattern has a second aspect corresponding to the content of the predetermined condition after the change. A plan pattern group including the first plan pattern and the second plan pattern is created by selecting a plan pattern,
The presenting unit presents only the first plan pattern from the group of plan patterns, and when the operation unit rejects the execution of the first plan pattern, To present only the second plan pattern .   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.   The energy management system according to claim 1 or 2, wherein the plan pattern creation unit creates a plurality of the plan patterns based on prediction of user behavior. The energy storage device includes an electric vehicle (29) that stores electric power and can travel with the electric power,
The energy management system according to claim 3, wherein the plan pattern creation unit creates a plurality of the plan patterns based on a user's use prediction of the electric vehicle.   The energy management system according to any one of claims 1 to 4, wherein the energy storage device includes a water heater (28) that heats and stores water with electric power.

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