JPWO2016185665A1 - Power management apparatus, power management system and program - Google Patents

Abstract

In order to avoid a situation where devices are used at the same time at the end of a power saving request, and to enable the power user to know in advance the end point of the power saving period, the power management device (10) 11) and a notification unit (12). The creating unit (11) creates a message to be notified to each of the plurality of terminal devices (20). The notification unit (12) notifies a message to each of the plurality of terminal devices (20). The plurality of terminal devices (20) are associated with each of a plurality of target spaces (30) that receive power from the power system (40), and the message is received by each of the plurality of target spaces (30) from the power system (40). The target period T0 is designated as content for requesting reduction of power to be transmitted. The creation unit (11) determines the end date and time of the target period T0 in association with the plurality of target spaces (30).

Description

  The present invention generally relates to a power management apparatus, a power management system, a program, particularly a power management apparatus that requests reduction of power received from the power system, a power management system including the power management apparatus, and a computer functioning as the power management apparatus It is related with the program to make it.

  2. Description of the Related Art Conventionally, a technique for requesting a reduction in power received from an electric power system (that is, a power saving request) has been proposed (see, for example, Patent Document 1). In Patent Document 1, after the request for power saving is completed, the power saving corresponding to the problem that the power saving request is repeated in a short period of time by starting to use the devices that the customer (electric power consumer) has put up with using all at once. A request generator has been proposed.

  The power saving request generation device of Patent Literature 1 defines a first threshold value and a second threshold value with respect to the total power in a plurality of power consumers. The power saving request generation device transmits a power saving request notification when the total power becomes equal to or greater than the first threshold, and then transmits a power saving request end notification when the total power becomes equal to or less than the second threshold. Further, in Patent Document 1, when a power saving request generating device divides a plurality of power consumers into a plurality of groups and the total power becomes equal to or lower than a second threshold value, the power saving request generating device sequentially sequentially for each group at a predetermined time interval. A configuration for transmitting a power saving request end notification is described.

  The power saving request generating device described in Patent Document 1 sets the first threshold value and the second threshold value with respect to the total power consumption, and the total power consumption, the first threshold value, and the second threshold value. A notification regarding the power saving request is transmitted based on the result of comparison with the threshold. In addition, the power saving request generating device is configured to use devices all at once at the end of a power saving request by shifting the timing of sending a power saving request completion notification at a predetermined time interval for each group of power consumers. Is preventing.

JP 2014-60887 A

  When the power saving request generating device described in Patent Document 1 is in a state where the total power consumption is equal to or greater than the first threshold value and is equal to or less than the second threshold value, for each group defined for the power consumer, A power saving request end notification is transmitted at predetermined time intervals. In other words, since the power saving request end notification is transmitted at the time when the condition for ending the power saving request is established, the power consumer cannot predict the time when the power saving request ends. Therefore, the electric power consumer cannot know how long to use the device.

  The present invention avoids a situation where devices are used at the same time at the end of a power saving request, and allows the power user to know in advance the end of the period during which a reduction in power received from the power system is requested. An object of the present invention is to provide a power management apparatus. Another object of the present invention is to provide a power management system including the power management apparatus and a program for causing a computer to function as the power management apparatus.

  A power management apparatus according to an aspect of the present invention includes: a creation unit that creates a message to be notified to each of a plurality of terminal devices; and a notification unit that notifies the message to each of the plurality of terminal devices. Each of the terminal devices is associated with each of a plurality of target spaces that receive power from the power system, and the message is a content requesting a reduction in power that each of the plurality of target spaces receives from the power system. Is specified, and the creation unit determines the end date and time of the target period in association with the plurality of target spaces.

  A power management system according to an aspect of the present invention includes a plurality of terminal devices arranged in each of a plurality of target spaces that receive power from a power system, and a power management device that notifies a message to each of the plurality of terminal devices. The power management apparatus includes: a creation unit that creates a message to be notified to each of the plurality of terminal devices; and a notification unit to notify the message to each of the plurality of terminal devices. Each of the plurality of target spaces is a content requesting reduction of power received from the power system, and a target period is specified, and each of the plurality of terminal devices receives power from the power system. A controller for adjusting the power to be received, and receiving power from the power system in the target period specified by the message The that power is adjusted configured to reduce to a predetermined reference power, the creation unit, the end time of the target period, determined in association with the plurality of target space.

  A program according to an aspect of the present invention is for causing a computer to function as the above-described power management apparatus. The program may be provided in a state of being recorded on a computer-readable recording medium or a storage medium.

  The present invention avoids a situation where devices are used at the same time at the end of a power saving request, and allows the power user to know in advance the end of the period during which a reduction in power received from the power system is requested. To.

FIG. 1 is a block diagram illustrating a power management system according to the embodiment. FIG. 2 is a diagram illustrating a target period in the embodiment. FIG. 3 is a diagram illustrating a procedure for consulting for a power saving request in the embodiment.

  The power management system described below includes a power management device 10 and a terminal device 20, as shown in FIG. In the following description, the target space 30 is a space where a consumer who has contracted with the business to receive power from the power system 40 uses power, and the power used is measured by a power meter. Used to mean space. That is, the power management system includes a power management device 10 configured to transmit a message to the terminal device 20 used by a consumer, and a terminal device 20 that receives a message generated by the power management device 10. The

  The target space 30 is a house, an office, a store, or the like, and there are cases where one building is one target space and cases where a plurality of target spaces exist in one building. For example, in a detached house, one building is one target space, and in an apartment house, a plurality of target spaces exist in one building. A business contracting with a consumer is a power business, a business that performs power retailing without generating power, or a business such as an aggregator that aggregates a plurality of customers.

  By the way, when supplying electric power from a business operator to a consumer (that is, the target space 30) through the power system 40, it is necessary to match the power supplied by the business operator with the power received by the consumer in an instantaneous unit. Therefore, the electric power that can be supplied from the operator is determined so as to have a margin with respect to the predicted value of the electric power received by the consumer in preparation for fluctuations in the electric power received by the consumer.

  In other words, the predicted value of the total power received by a plurality of consumers with respect to the maximum power that can be supplied from the business operator needs to satisfy the constraint that it is smaller than the required margin.

  There are two ways to satisfy these constraints: one is to increase the maximum power that can be supplied from the operator according to the predicted value of the total power received by multiple consumers, and the other is the maximum power that can be supplied from the operator. There is a method of reducing the total electric power received by a plurality of consumers based on the electric power. If the former method is adopted, there is a cost for procuring electric power, and it may not be adopted depending on the configuration and scale of the power generation equipment.

  Therefore, in recent years, businesses have requested consumers to save power and encouraged consumers to reduce the amount of power received, thereby reducing the total amount of power received by consumers and ensuring the necessary margin. The latter method is adopted. In other words, the business operator predicts the total power that the customer will receive in the future, and demands power saving during a period when the difference obtained by subtracting the predicted power from the maximum power that can be supplied by the business operator is smaller than the predetermined value. Ask the house.

  In other words, the business operator notifies the customer of a period during which power supply and demand is expected to be tight, and requests the customer to save power during this period. The total power that the plurality of consumers will receive in the future is predicted using the history regarding the total power received by the corresponding customers in the past. The history regarding power represents the transition of past power with the passage of time. In addition, the period for requesting power saving from consumers is determined not only during the period when power supply and demand is tight, but also as appropriate. Hereinafter, a period for requesting power saving from a consumer is referred to as a target period. The request for power saving by the business operator is notified to the customer by specifying the target period of power saving and the upper limit value of power in the target period. The upper limit value of power is the maximum value that limits the instantaneous value of power received by the target space 30 during the target period.

  In the present embodiment, a configuration example will be described in which a message requesting power saving is notified from the power management apparatus 10 managed by the operator to the terminal apparatus 20 managed by the consumer. The terminal device 20 should just be linked | related with the object space 30, for example, can be selected from the smart phone, tablet terminal, personal computer, etc. which a consumer holds. The terminal device 20 described in the present embodiment includes a controller 21 that adjusts the power that the target space 30 receives from the power system 40.

  The controller 21 adjusts the power received by the target space 30 from the power system 40 by controlling the operation of the device 41 used in the target space 30. Various specifications are known for this type of controller 21. In the present embodiment, the controller 21 is an example of a HEMS (Home Energy Management System) controller. The terminal device 20 according to the present embodiment is arranged in each of a plurality of target spaces 30.

  The controller 21 has a function of acquiring a power value measured for each branch circuit branched by the distribution board, and also has a function of controlling the operation of the device 41 by communicating with a so-called HEMS compatible device. That is, the controller 21 can monitor the power consumed by the device 41 in units of branch circuits, and can control the operation of the device 41 if the device 41 is a HEMS compatible device.

  The HEMS-compatible device means a device 41 that can communicate with the HEMS controller 21 and at least one of operation monitoring and control is performed by the controller 21. Here, operation and monitoring of the device 41 of this embodiment are performed by the controller 21. The controller 21 and the device 41 exchange information by wired communication such as power line carrier communication or wireless communication using radio waves as a transmission medium.

  The controller 21 has a function of communicating through an electric communication line 50 such as the Internet, and has a function of exchanging information with an operation display device. That is, the power management apparatus 10 communicates with the controller 21. The operation display device may be a dedicated device for the controller 21, but a general-purpose device including an operation display device such as a smartphone or a tablet terminal can also be used. In other words, the controller 21 includes an interface for using the general-purpose device as an operation display device.

  The power management apparatus 10 communicates with a plurality of terminal apparatuses 20 (in this embodiment, the controller 21) through the electric communication line 50. When the telecommunication line 50 is the Internet, the communication between the power management apparatus 10 and the terminal device 20 is encrypted. The power management device 10 and the terminal device 20 may construct a VPN (Virtual Private Network).

  The power management apparatus 10 notifies the terminal device 20 of a message. The message may include only the content notified to the consumer through the operation display device, but in this embodiment, includes a command (command) for instructing the controller 21. The power management apparatus 10 is configured to notify each terminal apparatus 20 of a message.

  The power management apparatus 10 includes a creation unit 11 that creates a message and a notification unit 12 that notifies the message. The creating unit 11 creates a message to be notified to each of the plurality of terminal devices 20, and the notifying unit 12 notifies each of the plurality of terminal devices 20 of the message created by the creating unit 11. In the present embodiment, the content of the message generated by the creating unit 11 is determined so as to request the customer to save power.

  Since the message created by the creating unit 11 is a content for requesting power saving, as described above, it includes information on power related to power saving and information on a target period of power saving. The notification unit 12 notifies the terminal device 20 placed in the target space 30 of the message created by the creation unit 11. That is, the terminal device 20 arranged in the target space 30 receives the power information and the power saving target period information included in the message.

  In the present embodiment, the message includes a command for instructing the controller 21, and the controller 21 controls the device 41 (actually a HEMS compatible device) according to the content of the message. That is, when the terminal device 20 receives a message from the power management device 10, the controller 21 controls the operation of the device 41 in the target period.

  Therefore, when the power management device 10 transmits a message requesting power saving to the terminal device 20 associated with the target space 30, the controller 21 of the terminal device 20 automatically determines the power received by the target space 30 according to the content of the message. Adjust. In short, the controller 21 of the terminal device 20 that has received the message operates the device 41 so that the upper limit value of the power received from the power system 40 is less than or equal to the power specified by the message in the target period specified by the message. To control. Therefore, the power received by each target space 30 from the power system 40 during the target period is limited so that the power specified by the message is set as the upper limit value.

  Here, power saving means that the power received from the power system 40 in the target space 30 in the target period is reduced from the reference power. The reference power is power that is expected to be consumed when power reception is not suppressed in the target space 30, and since this power cannot be measured, generally, it is included in the history of power measured for the target space 30. Determined based on. Hereinafter, the power predicted by the power management apparatus 10 for each of the target spaces 30 is referred to as “reference power”, and the power obtained by summing the reference power for all the target spaces 30 to which power is supplied is represented by “baseline”. "

  The baseline corresponds to the total power obtained by adding the reference power for all the target spaces 30 managed by the power management apparatus 10. The target value of power to be saved in the target period is determined based on the baseline. For example, if the baseline is P [kW] and power saving is requested so that 90% of the baseline is the upper limit, the target value of the power to be saved is 0.1 P [kW].

  When the customer saves power, the power received in the target space 30 during the target period becomes smaller than the reference power. That is, the business operator can reduce the power to be supplied as compared with the case where the power is supplied more than the total (baseline) of the reference power determined for each of the managed target spaces 30. Accordingly, the power required to request power saving from the consumer based on the power that can be supplied by the business, the baseline related to the target space 30 under the management of the business, the probability that the consumer is expected to accept the power saving request, and the like. It becomes possible to calculate.

  The baseline and the reference power change depending on conditions such as the time of day, the day of the week, the season of the year, the weather, etc., and also change depending on conditions such as the living environment over a long period of multiple years. The living environment varies depending on, for example, the heat insulation performance of the target space 30, the purpose of use of the target space 30, the age of the person who uses the target space 30, the number of people, and the like. In addition, if the target space 30 is a residence, the living environment changes depending on the configuration of the resident. Therefore, it is desirable that the reference power is determined for each target space 30 according to conditions.

  However, instead of calculating the reference power individually for each of the target spaces 30, a standard value of the reference power may be determined for each category into which the target spaces 30 are classified. For example, based on the power history for each target space 30, the power usage status of the target space 30 may be classified, and the reference power may be determined for each classified category. In other words, the standard value of the reference power is applied according to the category to which the target space 30 belongs. Even when the reference power is determined for each section of the target space 30, the reference power is determined for each target period. If the category is set by incorporating conditions such as day of the week, season, and weather, it is easy to extract the category according to the condition of the target period.

  As described above, the power when requesting power saving to the target space 30 corresponds to the upper limit value of the power used in the target space 30 in the target period. This power is determined, for example, as a ratio to the reference power (for example, 80% of the reference power) or a value obtained by subtracting a predetermined value from the reference power.

  When the upper limit value of the power that can be used in the target period is indicated from the power management apparatus 10, the controller 21 controls the device 41 so that the power received from the power system 40 in the target period can be suppressed below this upper limit value. Define the content. The control content of the device 41 according to the upper limit value of the power is created by the controller 21 using a history regarding the use of the device 41 in the target space 30.

  However, it may not be said that the hardware resources of the controller 21 are sufficiently abundant, and the controller 21 has a processing capability to determine the control content of the device 41 so that the power received from the power system 40 is less than or equal to the upper limit value. It may not be. Therefore, in this embodiment, the power management apparatus 10 determines the control content of the equipment 41 in each target space 30, and transmits the control content determined by the power management apparatus 10 to the terminal device 20, whereby the controller 21 A configuration for controlling the device 41 is employed.

  By the way, the creation unit 11 determines a plurality of types of target periods in association with each of the plurality of target spaces 30. As shown in FIG. 2, in the present embodiment, the target period T <b> 0 is individually set for the common period T <b> 1 that the business operator determines in common for all the target spaces 30 and the target space 30 selected by the business operator. And a predetermined individual period T2. The common period T1 is a period that is commonly applied to all target spaces 30 that are required to save power, and the individual period T2 is a period that is individually applied to each target space 30 that is required to save power. is there.

  That is, in the example of the target period T0 indicated by A in FIG. 2 and the target period T0 indicated by B in FIG. 2, an individual period T2 is set for each different target space 30, and the length of the target period T0. Is different. The start date / time of the target period T0 is, in principle, the start date / time of the common period T1, and the start date / time of the target period T0 is the same in all the target spaces 30 managed by the operator. Therefore, the end date / time of the target period T0 is a date / time corresponding to the length of the individual period T2 for each target space 30.

  The common period T1 is an indispensable period in which power consumption must be requested from the consumer, and corresponds to, for example, a period in which power supply and demand is tight. The common period T1 is not determined by the creation unit 11, but is a period in which it is determined that power supply and demand will be tight. A configuration for determining the tightness of power supply and demand will be described later. On the other hand, the individual period T2 is a period for adjusting the date and time when the consumer ends power saving. The individual period T2 is a period immediately after the end of the common period T1, and is set because a large number of consumers may consume more power than usual. The individual period T2 is generated by the creating unit 11, and the creating unit 11 determines the target period T0 by adding the common period T1 and the individual period T2.

  For example, in the common period T1, it is assumed that the set temperature of the air conditioner is set in a direction in which the power consumed is lower than a comfortable temperature (high temperature side during cooling and low temperature side during heating) in order to save power. In this case, there is a possibility that the set temperature of the air conditioner is set in a direction in which the electric power consumed is higher than the comfortable temperature so that a comfortable temperature environment can be obtained in a short time from the end of the common period T1. Even when the device 41 stopped in the common period T1 is operated along with the end of the common period T1, the power received by the consumer may increase. In other words, even if the power consumed by the consumer is normal, the power supply and demand will not be tight, but immediately after the end of the common period T1, the power consumed by the consumer will increase more than usual and the power supply and demand will be tight. May occur.

  If the target period T0 matches in all the target spaces 30 managed by the operator, the power received in the target space 30 immediately increases immediately after the end of the target period T0. As a result, the power supply and demand is tight. It can happen. Therefore, in the present embodiment, the target period T0 includes the common period T1 and the individual period T2, and the individual period T2 is set in association with the target space 30. As described above, since the target period T0 includes the individual period T2, it is prevented that the end date and time of the target period T0 coincides in all of the target spaces 30, and the tightness of power supply and demand occurs immediately after the end of the common period T1. The event is avoided.

  Here, the individual period T2 is selected from a plurality of types prepared in advance. In other words, the creation unit 11 selects a target period T0 including the common period T1 and the individual period T2 from a plurality of types in association with the target space 30. The creation unit 11 determines the individual periods T2 in a plurality of stages in association with the plurality of target spaces 30.

  The length of the individual period T2 can be determined stepwise, for example, in increments of about 1 minute, but may be in increments of about 10 minutes to 1 hour. At present, the amount of power for 30 minutes is often used for power control in the power system 40, and therefore, it is sufficient to set individual periods T2 of about two to three steps with a step size of 30 minutes. That is, the length of the individual period T2 may be selected from values such as 0 minutes, 30 minutes, and 60 minutes, and which value corresponds to which target space 30 is based on the power history in the target space 30. You just have to decide.

  The notification unit 12 transmits the message created by the creation unit 11 to the terminal device 20 associated with each target space 30. Therefore, the terminal device 20 associated with each target space 30 receives a message in which the target period T0 selected from the target periods T0 of a plurality of stages is set. In other words, the message for requesting power saving for the plurality of target spaces 30 under the management of the operator includes information on the power required for each target space 30 and the target selected from the target periods T0 in a plurality of stages. Information of the period T0. In other words, the end date / time of the target period T0 in which power saving is requested for the plurality of target spaces 30 under the management of the business operator is the date / time selected from a plurality of types according to the target space 30.

  As described above, the power management apparatus 10 notifies the terminal device 20 associated with the target space 30 of a message requesting power saving by specifying the target period T0 corresponding to the target space 30. Therefore, a situation in which all of the target spaces 30 that have received the power saving request among the target spaces 30 managed by the business operator are simultaneously released from the power saving state is avoided. As a result, the load on the power system 40 returns to a normal state over a relatively long time, and when viewed from the power system 40, it behaves as if the load has soft-started.

  In the operation example described above, the terminal device 20 that has received a message from the power management apparatus 10 automatically controls the operation of the device 41 so as to reduce the power received in the target space 30. Here, depending on the convenience of the target space 30, there may be a case where a request for power saving cannot be accepted in the target period T0. On the contrary, depending on the situation of the target space 30, there may be a case where a power saving request is not required in the target period T0.

  For example, if a visitor is scheduled in the target period T0, the power received in the target space 30 may increase more than usual. In addition, when going out in the target period T0, the power received by the target space 30 is greatly reduced compared to the requested power saving power. In this case, no power saving request is required. Alternatively, the customer is practicing energy saving, and the target space 30 may not be able to accept the request for power saving because the power received in the target period T0 is originally low. It can be said that the request is unnecessary.

  Therefore, whether or not to accept a power saving request in the target space 30 needs to be determined before the target period T0. Hereinafter, a case will be described as an example where the power management apparatus 10 determines whether or not to accept a power saving request on the day before the target period T0.

  The power management apparatus 10 includes a configuration for consulting on the previous day whether or not to accept a request for power saving in the target period T0. That is, as shown in FIG. 1, the power management apparatus 10 has a configuration for determining whether or not power saving is necessary, a configuration for creating a plan regarding the operation content of the device 41 for each target space 30, and a plan for a consumer. A configuration for percussion and a configuration for totaling the results of percussion are provided.

  As a configuration for determining whether or not power saving is necessary, the power management apparatus 10 predicts the power (reference power) that the target space 30 receives from the power system 40, the power that can be supplied to the power system 40, and the reference power And a determination unit 14 that determines whether power saving is necessary. The power management apparatus 10 includes a communication unit 15 that exchanges information with the terminal device 20, and the prediction unit 13 transmits information on the power received by each target space 30 from the power system 40 from the terminal device 20 to the communication unit. Receive through 15.

  The prediction unit 13 receives information on the power consumed in each target space 30 (actually, the amount of power per unit time) from the terminal device 20 through the communication unit 15. The unit time is selected from the range of about 1 second to 1 hour. For example, the unit time can be 30 seconds or 1 minute, but the unit time used by the prediction unit 13 may be 10 minutes or 30 minutes, for example.

  Using the power history received from the terminal device 20, the prediction unit 13 predicts the power (reference power) consumed in the target space 30 the next day for each unit time. Furthermore, the prediction unit 13 obtains the total of the reference power for all the target spaces 30 managed by the power management apparatus 10 for each unit time, and obtains the difference from the power that can be supplied to the consumer through the power system 40.

  The determination unit 14 uses the difference obtained by the prediction unit 13 to determine whether or not there is a possibility that the power supply and demand will be tight for each unit time. Extract the band. The determination unit 14 extracts a time zone in which the tightness of power supply and demand occurs in unit time units, and sets the extracted time zone as the common period T1 in the target period T0. Information of the common period T1 determined by the determination unit 14 in this way is delivered to the creation unit 11 described above.

  The creation unit 11 has a function of creating a plan regarding the operation content of the device 41 for each target space 30. That is, the creation unit 11 creates a plan related to the operation content of the device 41 so that the power received by the target space 30 from the power system 40 in the target period T0 (common period T1 and individual period T2) is less than the reference power. .

  The creation unit 11 uses a history of past operation content related to the device 41 in order to create a plan related to the operation content of the device 41 in the target period T0. Here, the device 41 used in the target space 30 can be grasped by the power management device 10 communicating with the terminal device 20. In addition, it is possible to grasp the history of past operation contents regarding the device 41 used in the target space 30.

  In order for the power management apparatus 10 to communicate with the terminal device 20 to grasp the history of past operation contents related to the device 41, the terminal device 20 relates to the power consumed by the device 41 used in each target space 30. Information is transmitted to the power management apparatus 10. However, in order for the terminal device 20 to transmit the power for each device 41 to the power management device 10, it is necessary to have a function of measuring the power consumed by the device 41. In general, the power for each branch circuit obtained by branching the wiring system in the target space 30 is transmitted from the terminal device 20 to the power management device 10 instead of the power of the device 41. In this case, the terminal device 20 transmits the power to the power management device 10 in association with the power of the branch circuit and the operation state of the device 41 known by the controller 21.

  The creation unit 11 creates a plan (power saving menu) of the operation content of the device 41 when saving power for each of the plurality of target spaces 30 managed by the power management apparatus 10. The power saving menu not only uses the power history when the device 41 is used in the target space 30, but also stores information about the acceptance status in the target space 30 when power saving is requested in the past. Is created taking into account the accumulated information. In other words, whether or not the target space 30 can easily accept the request for power saving, and information such as the power saved when the request for power saving is accepted is additionally received in the target space 30 by using the information for creating the power saving menu. Easy power saving menu can be created.

  When the creation unit 11 creates a power saving menu, the power management apparatus 10 needs to know in advance information about the devices 41 used in each of the target spaces 30. Information about the device 41 includes the type, specifications, years of use, etc. of the device 41. The types of the equipment 41 are an air conditioner (air conditioner), a television receiver (television), a washing machine, a ventilation fan, an IH cooking heater (IH: Induction Heating), a refrigerator, a lighting fixture, and the like. The power saving menu is a content for reducing the power consumed by the device 41, for example, instructing a set temperature for an air conditioner and instructing a TV, a washing machine, a ventilation fan, an IH cooking heater, etc. to not use it. become. The power saving menu may instruct the dimming lighting for the lighting fixture, and may indicate that the refrigerator cannot be opened. The power saving menu is created by appropriately combining these instruction contents so that the power consumed in the target space 30 is reduced by a predetermined amount with respect to the reference power.

  The creation unit 11 desirably creates a plurality of types of power saving menus for each target space 30. Although it is desirable to create the power saving menu for all the target spaces 30 managed by the power management apparatus 10, the power saving menu is not created for the target space 30 that cannot accept the request for power saving.

  By the way, the power management apparatus 10 includes a consultation unit 16 that consults whether or not to accept a request for power saving for each target space 30, and a totaling unit 17 that tabulates responses to the consultation performed by the consultation unit 16. Furthermore, the power management apparatus 10 includes an evaluation unit 18 that evaluates the result of the aggregation by the aggregation unit 17.

  The consultation unit 16 transmits the power saving menu created by the creation unit 11 to the terminal device 20 corresponding to each target space 30, and inquires whether or not to accept the power saving menu. That is, the power saving menu created by the creating unit 11 is notified to the terminal device 20 through the communication unit 15. When the consumer makes a response as to whether to accept the power saving menu using the terminal device 20, the consultation unit 16 receives a response from the terminal device 20.

  Although it is possible to adopt a configuration in which the controller 21 of the terminal device 20 automatically responds to the power saving menu from the consultation unit 16, the power saving menu is presented to the customer in advance before the target period T0. A response from a consumer may be received through the terminal device 20. When consulting a power-saving menu for a consumer, a margin of about one week to one month may be provided in a period in which the previous day is the last day and a response is possible.

  When notifying consumers of the power saving menu, the content of the power saving menu is, for example, dividing the power to be reduced with respect to the reference power into a plurality of stages, and the content of specific actions necessary to reduce the corresponding power to the terminal device. 20 may be presented. In other words, the power to be reduced is assumed to be three stages of A [kW], B [kW], and C [kW], and it is assumed that the relationship of A <B <C is satisfied. The air conditioner is assumed to be used for cooling.

  The content of the power saving menu is set as in the following example, for example, using a history of power in the target space 30. In the power saving menu for A [kWh], for example, the content is set such that the set temperature of the air conditioner is raised by 1 ° C. and the TV is not turned on. The power saving menu for B [kWh] is set, for example, to raise the set temperature of the air conditioner by 2 ° C., turn off the TV, and not use the washing machine. The power saving menu for C [kWh] is set, for example, to raise the set temperature of the air conditioner by 2 ° C., turn off the TV, do not use the washing machine, do not open the refrigerator, and do not use the IH cooking heater.

  When such a power saving menu is notified to the terminal device 20 of the consumer who manages the target space 30, the consumer sees the content of the specific action (specific operation of the device 41), and the power corresponding to the action. It is possible to determine whether or not reduction is possible. Therefore, if the consumer operates the terminal device 20 to select a possible action during the target period T0, the consumer may return a response that the consumer has accepted a reduction in power corresponding to the action to the consultation unit 16. it can.

  The power saving menu does not need to correspond one-to-one with the power to be reduced as in the example described above, and a plurality of types of power saving menus may be set for the power to be reduced. Further, instead of setting a power saving menu for each power to be reduced, a plurality of types of actions for reducing power for each device 41 may be displayed on the terminal device 20. In this case, when the consumer selects an action that is possible in the target period T0, the power that is reduced for each selected action is shown, and when the plurality of actions are selected, the total power that is reduced is shown in the terminal device 20. It may be a configuration. That is, for a plurality of devices 41, when a customer specifies operation details for each device 41, the total amount of power reduced by the specified operation details is shown to the terminal device 20, and the amount of power reduced by the consumer's behavior is shown. The total amount may be shown to the customer.

  The totaling unit 17 totals the contents of responses from the terminal device 20 corresponding to the target space 30 managed by the power management apparatus 10, and calculates the total power received by the target space 30 from the power system 40 in the target period T0. Ask. The total power as a result of aggregation is given to the evaluation unit 18, and the evaluation unit 18 uses the power that can be supplied to the power system 40 in the target period T0 and the power on the demand side that is newly obtained for the target period T0. Evaluate whether further power saving is necessary. That is, the evaluation unit 18 evaluates whether or not the sum of the power reduced with respect to the reference power in each of the target spaces 30 has reached the target value of the power to be reduced with respect to the baseline, and the sum of the power. If the target value is not reached, it is evaluated that further power saving is necessary.

  Further, when the evaluation unit 18 evaluates that power saving is necessary, the evaluation unit 18 requests the creation unit 11 to correct or change the power saving menu. That is, the process by the preparation part 11, the consultation part 16, the total part 17, and the evaluation part 18 is repeated. On the other hand, when the evaluation unit 18 evaluates that further power saving is unnecessary, the creation unit 11 generates a message based on the result of the response to the consultation performed by the consultation unit 16. The message is transmitted to the terminal device 20 through the notification unit 12, and the controller 21 of the terminal device 20 controls the device 41 in the target space 30 according to the plan created by the creation unit 11.

  FIG. 3 simply shows a procedure from consulting the terminal device 20 with the power saving menu created by the power management apparatus 10 and determining the power saving menu. In FIG. 3, the power management apparatus 10 communicates with a plurality of terminal apparatuses 20. The power management apparatus 10 acquires the power (received power) received by the target space 30 from the power system 40 from the terminal device 20 and user information regarding the target space 30 (P1). In addition, the power management apparatus 10 acquires information on power that can be supplied to the power system 40 or information on a power saving request from a provider that supplies power (P2). The power management apparatus 10 determines whether to make a power saving request to the terminal apparatus 20 using the acquired information (P3).

  If it is determined that a power saving request is necessary, the creation unit 11 of the power management apparatus 10 generates a power saving menu (P4), and consults the terminal device 20 with the power saving menu through the consultation unit 16 (P5). The power saving menu associates the operation content of the device 41 with the power that can be saved, and is generated individually for each target space 30. Further, the target period T0 is designated in the power saving menu. The customer or the controller 21 determines whether or not to accept the power saving menu notified to the terminal device 20, and returns a response to accept the acceptable power saving menu from the terminal device 20 to the power management device 10 (P6). . When the power saving menu notified to the terminal device 20 cannot be accepted, the terminal device 20 returns a rejection response to the power management device 10 (P6).

  The totaling unit 17 of the power management apparatus 10 totals the contents of responses from the terminal apparatus 20 (P7) and evaluates whether or not the total power reduced with respect to the baseline has reached the target value (P8). ). If the target value has not been reached, the power saving menu is corrected. If the target value has been reached, the creation unit 11 generates a message specifying the target period T0. The message may have the same content as the power saving menu when the terminal device 20 is accepted, but the power saving menu can be modified depending on information (for example, absence information) included in the response from the terminal device 20. It is. The generated message is transmitted to the terminal device 20. The controller 21 of the terminal device 20 controls the device 41 used in the target space 30 according to the operation content included in the message.

  In the configuration example described above, the prediction unit 13 predicts the power received from the power system 40 for each target space 30 and totals the predicted power for all target spaces 30. That is, the electric power measured in each target space 30 is totaled, and the electric power in all the target spaces 30 is calculated | required. With respect to this configuration, in the power system 40, the power measured on the electric circuit before branching the electric circuit to the target space 30 may be used. The power measured in the power system 40 needs to be corrected in view of power loss on the electric path to the target space 30. When this power is used, the prediction unit 13 sums the power for each target space 30. No processing is required.

  The power saving menu can be created in consideration of the heat insulation performance of the target space 30 in addition to the power history. In particular, the individual period T2 included in the target period T0 in the power saving menu is preferably determined in consideration of the heat insulating performance of the target space 30. For example, in the target space 30 with low heat insulation performance, the indoor temperature is easily affected by the outside air temperature, and the comfort is easily lost when the power used for cooling or heating is reduced. Therefore, it is useful for the target space 30 having a relatively low heat insulation performance to set the individual period T2 shorter than the target space 30 having a relatively high heat insulation performance.

  Moreover, it is useful to create the power saving menu according to information on whether or not there is a person in the target period T0 in the target space 30. When there is no person in the target period T0 in the target space 30, there is a high possibility that the customer will accept a request for power saving. However, in the target space 30 where there are no people on a daily basis during the target period T0, it is not possible to expect a reduction in power relative to the reference power. Therefore, it is useful that the target space 30 for determining whether or not there is a person is limited to the target space 30 for which the reference power predicted for the target period T0 is equal to or greater than the set reference value.

  Information on whether or not there is a person in the target period T0 is obtained by letting the user report through the terminal device 20. Further, when a user's action schedule (that is, an action schedule) is registered in the terminal device 20, it is possible to determine whether or not a person exists in the target period T0 based on the content of the action schedule. is there.

  As a reference for adjusting the individual period T2 in the power saving menu, in addition to the heat insulation performance of the target space 30 described above, the purpose of use of the target space 30, the age of the user, the number of users, and the like may be used. It is also possible to adjust the individual period T2 depending on whether the user of the target space 30 intends to save energy or comfort.

  For example, when an elderly person or a sick person stays in the target space 30 for a long time, it is necessary to maintain a comfortable environment. Therefore, the power saving is not requested or the individual period T2 is shortened even when requested. Is useful. Here, in general, the target space 30 with less fluctuation in the power used is more likely to predict the reference power in the target period T0 than the target space 30 in which the power used fluctuates daily. It can be said that it is easy to determine the power to be reduced. However, in the target space 30 that is used by elderly people or ill-healed persons, it may be difficult to accept a request for power saving. Therefore, the creation unit 11 considers the purpose of use of the target space 30 when creating the power saving menu. There is a need to.

  In addition, the power used during heating and cooling may change depending on the number of users in the target space 30. Since the power required in the target space 30 can be reduced as the number of users increases during heating, the creation unit 11 may generate a power saving menu with a longer individual period T2 as the number of users increases. On the other hand, since it is necessary to increase the power required in the target space 30 as the number of users increases during cooling, the creation unit 11 may generate a power saving menu with a shorter individual period T2 as the number of users increases.

  When the user of the target space 30 intends to save energy, it is considered that the increment of the power received by the target space 30 from the electric power system 40 at the end of the target period T0 is relatively smaller than when the user aims at comfort. Therefore, it can be said that such a target space 30 has little influence on the power system 40 at the end of the target period T0. Therefore, the creation unit 11 can generate a power saving menu with a short individual period T2 of the target space 30 that aims at energy saving. On the other hand, it can be said that the target space 30 which aims at energy saving has a high possibility of accepting the extension of the individual period T2. That is, the creation unit 11 can generate a power saving menu having a longer individual period T2 than a user who wants comfort for a user who wants to save energy.

  In other words, it can be said that the target space 30 used by consumers who intend to save energy has a wide range of adjustment regarding the length of the individual period T2. Note that the creation unit 11 appropriately replaces the user who consults the power saving menu with a long individual period T2 every time it requests power saving so that the users who request the power saving menu with a long individual period T2 are not biased. May be.

  Whether the user of the target space 30 intends to save energy or comfort can be estimated based on the transition pattern of the power received by the target space 30 from the power system 40. When energy conservation is intended, the maximum value of power is relatively small, and the fluctuation range divided for each unit time of power is considered to be relatively small. By classifying such a power transition pattern, it is possible to classify whether the user of the target space 30 intends to save energy or comfort. This type of classification result is distinguished as a power saving type and is used for setting a power saving menu.

  The power received by the target space 30 from the power system 40 varies depending on whether the target space 30 includes a distributed power supply device in addition to the heat insulation performance and the power saving type of the target space 30. The distributed power supply device is selected from a photovoltaic power generation facility, a power storage device, a fuel cell system, and the like, and two or more types of distributed power supply devices may be used in the target space 30. In the target space 30 including the distributed power supply device, it is easy to accept a power saving request, and it is easy to maintain the convenience of the user of the target space 30 even if the target period T0 is extended. Therefore, for the target space 30 in which the distributed power supply apparatus is installed, it is possible to create a power saving menu so as to relatively increase the power to be reduced, and to set a relatively long individual period T2.

  The acquisition unit 35 provided in the power management apparatus 10 acquires the power saving type, the presence / absence of the distributed power supply apparatus, the heat insulation performance of the target space 30 and the like from the terminal apparatus 20 as user information. Note that the acquisition unit 35 also acquires information on the power received by the target space 30 from the power system 40 from the terminal device 20. The acquisition unit 35 may not only directly acquire user information from the terminal device 20, but may acquire a result of analyzing information related to the target space 30 acquired from the terminal device 20 by the power management apparatus 10 as user information. The creation unit 11 uses the user information of the target space 30 acquired by the acquisition unit 35 as a criterion for determining the length of the individual period T2, and adjusts the length of the individual period T2 according to the user information.

  By the way, in the target space 30 where no person is present in the target period T0, the power received from the power system 40 is expected to be significantly reduced with respect to the reference power. Therefore, in the target space 30 where no person is present, there is a high possibility that the content of the power saving request message will be implemented. Therefore, information on whether or not there is a person in the target space 30 greatly contributes to the prediction of power to be reduced.

  Whether or not there is a person in the target space 30 in the target period T0 is predicted based on information reported to the user of the target space 30 through the terminal device 20, information on an action plan related to the user of the target space 30, and the like. . In addition, when the behavior of the target space 30 is regular, whether or not there is a person in the target space 30 in the target period T0 can be predicted based on information regarding the power transition history in the target space 30. It is. The power management apparatus 10 includes a determination unit 36 that determines whether there is a person in each of the target spaces 30 using these pieces of information. The determination result by the determination unit 36 is delivered to the creation unit 11. The creation unit 11 preferentially generates a power saving request message for the target space 30 when the determination unit 36 determines that no person exists in the target space 30 in the target period T0.

  That is, when the determination unit 36 determines that no person is present in the target period T0 in the target space 30 that normally consumes power equal to the reference power, the creation unit 11 To preferentially generate a power saving request message. In addition, since it is not possible to expect a reduction in power received from the power system 40 for the target space 30 in which there is no person on a daily basis during the target period T0, a message for requesting power saving is sent to such a target space 30. It is good also as not producing | generating.

  In the configuration example described above, the creation unit 11 performs a process of generating a message so that the upper limit of the power that the target space 30 receives from the power system 40 returns to the reference power at the end of the target period T0. In response to this process, the creation unit 11 may generate a message so as to increase the upper limit of the power received from the power system 40 in the individual period T2 in the target period T0 with the passage of time. If the power that can be received increases with time in the individual period T2, in the target space 30, it is possible to increase the number of devices 41 operable in the individual period T2 or increase the output of the devices 41. Therefore, the convenience for the user of the target space 30 can be improved.

  In the configuration example described above, when the controller 21 included in the terminal device 20 receives a message from the power management device 10, the controller 21 automatically controls the device 41 in the target space 30 according to the content of the message. On the other hand, the content of the message received by the terminal device 20 can be shown to the user (resident if it is a residence) of the target space 30, and the user can operate the device 41 according to the content of the message. .

  The power management apparatus 10 described above includes a device including a processor that operates according to a program as a main hardware element. As this type of device, a microcomputer having a memory integrally or a microprocessor having a memory separately is used. That is, the power management apparatus 10 is configured using a computer. The program is used for causing the computer to function as the power management apparatus 10. The program is stored in advance in a ROM (Read Only Memory), and is provided on a recording medium such as a computer-readable optical disk, or is provided through an electric communication network such as the Internet.

  The power management apparatus 10 according to the present embodiment described above includes the creation unit 11 and the notification unit 12.

  The creating unit 11 creates a message to be notified to each of the plurality of terminal devices 20. The notification unit 12 notifies a message to each of the plurality of terminal devices 20. The plurality of terminal devices 20 are associated with each of a plurality of target spaces 30 that receive power from the power system 40, and the message is a content that requests reduction of the power that each of the plurality of target spaces 30 receives from the power system 40. The target period T0 is designated. The creation unit 11 determines the end date and time of the target period T0 in association with a plurality of target spaces 30.

  In addition, the power management system of this embodiment includes a terminal device 20 and a power management device 10. The terminal device 20 is disposed in each of a plurality of target spaces 30 that receive power from the power system 40. That is, there are a plurality of terminal devices 20. The power management apparatus 10 notifies a message to each of the plurality of terminal apparatuses 20. The power management apparatus 10 includes a creation unit 11 and a notification unit 12. The creating unit 11 creates a message to be notified to each of the plurality of terminal devices 20. The notification unit 12 notifies a message to each of the plurality of terminal devices 20. The message is a content requesting a reduction in the power received by each of the plurality of target spaces 30 from the power system 40, and the target period T0 is designated. The plurality of terminal devices 20 include a controller 21 that adjusts the power received by the plurality of target spaces 30 from the power system 40. Further, the terminal device 20 adjusts the power received from the power system 40 in the target period T0 specified by the message so as to be reduced with respect to the predetermined reference power. The creation unit 11 determines the end date and time of the target period T0 in association with a plurality of target spaces 30.

  In the power management apparatus 10 and the power management system described above, the end date and time of the target period T0 is determined in association with the target space 30. Therefore, it is possible to avoid a situation in which the electric power increases simultaneously in the majority of the target spaces 30 during the target period T0 in which the electric power received from the electric power system 40 is reduced. That is, since the end date and time of the target period T0 varies depending on the target space 30, the amount of power received from the power system 40 increases rapidly at the end of the target period T0, and the possibility that the balance of power supply and demand is disturbed is reduced. The

  The terminal device 20 preferably includes a controller 21 that adjusts the power received by the plurality of target spaces 30 from the power system 40. The terminal device 20 adjusts the power received from the power system 40 so as to be reduced with respect to a predetermined reference power in the target period T0 specified by the message.

  According to this configuration, when the message is notified to the terminal device 20, the controller 21 of the terminal device 20 automatically adjusts the power received by the target space 30 from the power system 40, so that the content of the power saving request is realized. It becomes easy.

  The power management apparatus 10 may include an acquisition unit 35 that acquires user information for each of the plurality of target spaces 30. The user information includes at least one of a power saving type in which a transition pattern of power received from the power system 40 is classified, presence / absence of a distributed power supply device, and heat insulation performance. In this case, the creation unit 11 determines the end date and time of the target period T0 corresponding to each of the plurality of target spaces 30 using the user information of each of the plurality of target spaces 30 acquired by the acquisition unit 35 as a criterion.

  According to this configuration, the end date and time of the target period T0 can be determined based on the user information regarding the target space 30. That is, since the target period T0 is adjusted based on the user information related to the target space 30, it is possible to set the target period T0 that is easy for the user of the target space 30 to accept.

  The power management apparatus 10 may include a determination unit 36 that determines whether or not there is a person in each of the plurality of target spaces 30 in the target period T0. In this case, the creation unit 11 may preferentially generate a message for the target space 30 determined by the determination unit 36 that there is no person in the target period T0.

  That is, if the target space 30 is determined to be absent during the target period T0, it is highly possible that the amount of power received from the power system 40 can be reduced. Therefore, by generating a message in preference to the other target spaces 30, It becomes easier to achieve the target value of power to be reduced in the target period.

  The target period T0 may include a common period T1 defined in common for all of the plurality of target spaces 30 and an individual period T2 individually determined for each of the plurality of target spaces 30. In this case, the creation unit 11 creates a message so that the upper limit of the power received by each of the plurality of target spaces 30 from the power system 40 increases with time in the individual period T2.

  According to this structure, the electric power received from the electric power grid | system 40 is made to increase with progress of time in the separate period T2 defined for each object space 30 individually. Therefore, in each target space 30, it is possible to increase the number of usable devices 41 or increase the output of the devices 41 during the individual period T2.

  In addition, when the target period T0 includes a common period T1 defined in common for all of the plurality of target spaces 30 and an individual period T2 individually defined for each of the plurality of target spaces 30, the creation unit 11 The configuration may be such that T2 is selected from a plurality of stages.

  According to this configuration, when the individual period T2 is determined individually for each target space 30, only the individual period T2 is selected from a plurality of stages. Therefore, the target period T0 for each target space 30 can be easily set. it can.

  The creation unit 11 may be configured to create a power saving menu including the operation content of the device 41 used in each of the plurality of target spaces 30. The power saving menu is created so that the power received from the power system 40 in the target period T0 in each of the plurality of target spaces 30 is reduced with respect to the reference power. The power management apparatus 10 may include a consultation unit 16 and an evaluation unit 18. The consultation unit 16 consults each of the plurality of terminal devices 20 associated with each of the plurality of target spaces 30 to accept the power saving menu. Based on the response to the consultation performed by the consultation unit 16, the evaluation unit 18 evaluates whether or not the sum of the powers reduced with respect to the reference power in the target period T0 has reached a predetermined target value. Further, when evaluating that the total has not reached the target value, the evaluation unit 18 causes the creation unit 11 to correct the power saving menu, and causes the consultation unit 16 to accept acceptance of the corrected power saving menu.

  According to this configuration, the terminal device 20 is consulted as to whether or not to accept the power saving menu, and if the power to be reduced has not reached the target value as a result of a response to the consultation, the power saving menu is corrected, and the corrected power saving menu is displayed. Consultation of acceptance. Therefore, the possibility that the total power to be reduced in the target space 30 can reach the target value is increased.

  The above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and various modifications can be made according to design and the like as long as the technical idea according to the present invention is not deviated from this embodiment. Of course, it can be changed.

DESCRIPTION OF SYMBOLS 10 Power management apparatus 11 Creation part 12 Notification part 16 Consultation part 18 Evaluation part 20 Terminal apparatus 21 Controller 30 Target space 35 Acquisition part 36 Judgment part 40 Electric power system 41 Apparatus

Claims (9)

A creation unit for creating a message to be notified to each of a plurality of terminal devices;
A notification unit for notifying the message to each of the plurality of terminal devices,
The plurality of terminal devices are associated with each of a plurality of target spaces that receive power from a power system,
The message is a content requesting reduction of power received from the power system by each of the plurality of target spaces, and a target period is specified,
The creation unit determines an end date and time of the target period in association with the plurality of target spaces. The terminal device
Each of the plurality of target spaces includes a controller that adjusts the power received from the power system, and reduces the power received from the power system during the target period specified by the message with respect to a predetermined reference power. The power management apparatus according to claim 1. For each of the plurality of target spaces, an acquisition unit that acquires at least one type of user information among a power-saving type that classifies a transition pattern of power received from the power system, presence / absence of a distributed power supply device, and heat insulation performance Further comprising
The creating unit
The power management apparatus according to claim 1 or 2, wherein the user information of each of the plurality of target spaces acquired by the acquisition unit is used as a criterion for determining an end date and time of the target period according to each of the plurality of target spaces. A determination unit for determining whether or not there is a person in each of the plurality of target spaces in the target period;
The creating unit
The power management apparatus according to any one of claims 1 to 3, wherein the message is preferentially generated for a target space that is determined by the determination unit that there is no person in the target period. The target period includes a common period defined in common for all of the plurality of target spaces, and an individual period defined individually for each of the plurality of target spaces,
The said preparation part produces the said message so that the upper limit of the electric power which each of these some object space receives from the said electric power grid increases with progress of time in the said individual period. The power management device according to item. The target period includes a common period defined in common for all of the plurality of target spaces, and an individual period defined individually for each of the plurality of target spaces,
The power management apparatus according to claim 1, wherein the creation unit selects the individual period from a plurality of stages. The creation unit includes operation contents of devices used in each of the plurality of target spaces so that power received from the power system in the target period is reduced with respect to a reference power in each of the plurality of target spaces. Configured to create a power saving menu,
A consultation unit for consulting each of the plurality of terminal devices associated with each of the plurality of target spaces to accept the power saving menu;
Based on a response to the consultation performed by the consultation unit, further comprising an evaluation unit that evaluates whether or not the total power reduced with respect to the reference power in the target period has reached a predetermined target value,
The evaluation unit, when evaluating that the total has not reached the target value, causes the creation unit to correct the power saving menu and causes the consultation unit to accept acceptance of the corrected power saving menu. The power management apparatus according to any one of the above. A plurality of terminal devices arranged in each of a plurality of target spaces that receive power from the power system;
A power management device that notifies a message to each of the plurality of terminal devices;
The power management device includes:
A creating unit for creating a message to be notified to each of the plurality of terminal devices;
A notification unit for notifying the message to each of the plurality of terminal devices,
The message is a content requesting reduction of power received from the power system by each of the plurality of target spaces, and a target period is specified,
The plurality of terminal devices are:
Each of the plurality of target spaces includes a controller that adjusts the power received from the power system, and the power received from the power system in the target period specified by the message is reduced with respect to a predetermined reference power It is a configuration to adjust so that
The creation unit determines an end date and time of the target period in association with the plurality of target spaces.   The program for functioning a computer as a power management apparatus of any one of Claims 1-7.

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