Power management device, support device, power management method and program

Abstract

To provide a power management device and the like that can reduce capacity contributions paid by electricity retailers.SOLUTION: A power management device 10 comprises: a maximum power result acquisition unit 11 for acquiring a maximum power result of a power system for a prescribed period in at least summer and winter; a supply and demand status forecast value acquisition unit 12 for acquiring a supply and demand status forecast value in the power system for a prescribed day within a prescribed period; a first determination unit 13 for determining whether or not a maximum value of the supply and demand status forecast value for the prescribed day exceeds the maximum power result; and a notification unit 18 for notifying information based on a determination result of the first determination unit 13.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a power management device, a support device, a power management method, and a program. [Background technology]

[0002] With the liberalization of the retail electricity market, electricity retailers have entered the electricity retail business. Electricity retailers purchase electricity via the wholesale electricity trading market or directly from power generation companies, and distribute the electricity supplied by the power generation companies to the power demand facilities of multiple consumers who have contractual relationships with them. Patent Document 1 discloses a management device for the electricity trading market. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2023-030882 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, a capacity market was established in fiscal year 2020. This is a market for trading the electricity supply capacity (kW) that will be needed nationwide in the future. In the capacity market, supply capacity for the next four years is traded in an auction format, and capacity contributions will begin to be charged to electricity retailers and other businesses from fiscal year 2024.

[0005] Here, the capacity contribution amount borne by each electricity retailer is determined mainly based on the peak power (kW) consumed in the summer and winter of the previous year, but from the perspective of business viability, the relevant electricity retailers would like to see the amount of capacity contribution amount they pay reduced.

[0006] Therefore, the present invention provides a power management device, a support device, a power management method, and a program that can reduce the capacity contribution paid by electricity retailers. [Means for solving the problem]

[0007] A power management device according to one embodiment of the present invention includes a maximum power actual result acquisition unit that acquires the maximum power actual result of a power system for a specified period in at least summer and winter, a supply and demand situation forecast value acquisition unit that acquires a supply and demand situation forecast value for the power system on a specified day within the specified period, and a first determination unit that determines whether the maximum value of the supply and demand situation forecast value for the specified day exceeds the maximum power actual result.

[0008] A support device according to one embodiment of the present invention is a support device that supports businesses that retail electricity, and includes a receiving unit that receives information based on the judgment result of the first judgment unit from the power management device, and a presentation unit that presents information based on the judgment result.

[0009] A power management method according to one aspect of the present invention obtains the actual maximum power consumption of a power system for a predetermined period in at least summer and winter, obtains a predicted supply and demand situation value for the power system on a predetermined day within the predetermined period, and determines whether the maximum value of the predicted supply and demand situation value for the predetermined day exceeds the actual maximum power consumption.

[0010] A program according to one aspect of the present invention is a program for causing a computer to execute the above-described power management method. [Effects of the Invention]

[0011] According to one aspect of the present invention, it is possible to realize a power management device or the like that can reduce capacity contributions paid by businesses that retail electricity. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a diagram illustrating a configuration of a power management system according to an embodiment. [Figure 2] FIG. 2 is a block diagram illustrating a functional configuration of a power management apparatus according to an embodiment. [Figure 3]FIG. 3 is a block diagram illustrating a functional configuration of the first server device according to the embodiment. [Figure 4] FIG. 4 is a flowchart illustrating the operation of the power management apparatus according to the embodiment. [Figure 5] FIG. 5 is a flowchart showing the detailed operation of step S10 shown in FIG. [Figure 6] FIG. 6 is a diagram for explaining the determination of whether or not the target date is a power sales adjustment date. [Figure 7] FIG. 7 is a flowchart showing the detailed operation of step S20 shown in FIG. [Figure 8] FIG. 8 is a flowchart showing the operation of the support device according to the embodiment. [Figure 9] FIG. 9 is a block diagram illustrating a functional configuration of a power management apparatus according to a first modification of the embodiment. [Figure 10] FIG. 10 is a block diagram illustrating a functional configuration of a power management apparatus according to the second modification of the embodiment. [Figure 11] FIG. 11 is a block diagram illustrating a functional configuration of a power management apparatus according to a third modification of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] (Background to the invention) As described in the "Problem to be Solved by the Invention" above, capacity contributions will be charged to electricity retailers (e.g., retail electricity suppliers) starting in fiscal year 2024. The capacity contribution amount for each retail electricity supplier is determined based on the power (kW) consumed during peak electricity demand in the power grid for the previous fiscal year (summer and winter), taking into account fluctuations in the retail electricity supplier's share of the actual supply and demand year. The capacity contribution amount for each retail electricity supplier this fiscal year is calculated based on, for example, the power usage (power sales) during the time when the maximum hourly value for the entire power grid for the previous fiscal year occurs. Specifically, the capacity contribution amount for each retail electricity supplier is calculated based on the ratio of the total power usage (kW) during peak demand for each of the months of July to September and December to February for that period. Note that the months used for the calculation are merely examples and may be subject to change due to system updates, etc.

[0014] Here, from the viewpoint of business viability, it is desirable for electricity retailers to reduce the amount of capacity contributions they have to pay, but Patent Document 1 does not disclose any technology to achieve this.

[0015] Therefore, the inventors of the present application have conducted extensive research into a power management device and the like that can reduce the capacity contributions paid by electricity retailers, and have devised the power management device and the like described below.

[0016] Hereinafter, the embodiments will be specifically described with reference to the drawings.

[0017] The embodiments described below are all comprehensive or specific examples. The numerical values, numerical ranges, components, component placement and connection configurations, steps, and step order shown in the following embodiments are merely examples and are not intended to limit the present invention. Furthermore, among the components in the following embodiments, components not described in the independent claims are described as optional components.

[0018] Furthermore, each figure is a schematic diagram and is not necessarily an exact illustration. Therefore, for example, the scales of the figures do not necessarily match. Furthermore, in each figure, substantially the same components are given the same reference numerals, and redundant explanations are omitted or simplified.

[0019] Furthermore, in this specification, ordinal numbers such as "first" and "second" do not refer to the number or order of components unless otherwise specified, but are used to avoid confusion and distinguish between components of the same type.

[0020] (Embodiment) Hereinafter, a power management system according to this embodiment will be described with reference to FIGS.

[0021] [1. Power Management System Configuration] First, the configuration of a power management system according to the present embodiment will be described with reference to Figures 1 to 3. Figure 1 is a diagram showing the configuration of a power management system 1 according to the present embodiment.

[0022] 1, a power management system 1 according to the present embodiment includes a power management apparatus 10, a plurality of consumers 20 and 30 (hereinafter also referred to as consumers 20, etc.), a first server apparatus 40, and a second server apparatus 50. The power management apparatus 10, the first server apparatus 40, and the second server apparatus 50 are connected to each other via a network N so as to be able to communicate with each other.

[0023] The power management device 10 executes processing to reduce capacity contributions paid by electricity retailers in the capacity market. The power management device 10 executes processing to reduce peak power sold by electricity retailers. Note that hereinafter, an electricity retailer will be described as an example of an electricity retailer.

[0024] The power management device 10 is communicably connected to the consumer 20, etc., for example, via a communication line 110, and can control the energy resources 21 and 31 (hereinafter also referred to as the energy resources 21, etc.) owned by the consumer 20, etc., as needed. The power management device 10 can also acquire various measurement data from the consumer 20, etc., via the communication line 110. Note that although the communication line 110 and the network N are illustrated separately in FIG. 1, the communication line 110 may be the network N.

[0025] The power management apparatus 10 is realized by a non-volatile memory storing a program, a volatile memory that is a temporary storage area for executing the program, an input / output port, a communication interface, a processor that executes the program, etc. The power management apparatus 10 may be realized by, for example, a server device (e.g., a cloud server).

[0026] FIG. 2 is a block diagram showing the functional configuration of the power management device 10 according to this embodiment.

[0027] As shown in Figure 2, the power management device 10 has, as its functional configuration, a maximum power actual value acquisition unit 11, a supply and demand situation forecast value acquisition unit 12, a first determination unit 13, a sales power actual value acquisition unit 14, a prediction unit 15, a second determination unit 16, a control unit 17, and a notification unit 18.

[0028] The maximum power record acquiring unit 11 acquires the maximum power record for a first period of the power system 100 from a business operator that manages the power system 100 (e.g., the jurisdiction of the power system 100). The maximum power record acquiring unit 11 acquires the maximum power record for the first period of the power system 100, for example, at least in the summer (e.g., July to September) and winter (e.g., December to February). The first period is one month (e.g., the current month), but may be any other period that is set in advance. The first period may be, for example, one week (e.g., the current week), or may be a period longer than one month. The maximum power record is the maximum power record among the hourly power records in the power system 100 up to the previous day of the current month.

[0029] An example of a business operator that manages the power system 100 is a general power transmission and distribution business operator, but it may also be a distribution business operator, etc. The maximum power result acquisition unit 11 acquires the maximum power result from a server device managed by the general power transmission and distribution business operator or the distribution business operator, etc.

[0030] The supply and demand situation forecast value acquisition unit 12 acquires a forecast value of the power supply and demand situation for a predetermined day in the power system 100. The predetermined day is a target day for determining whether or not a power demand peak will occur in the entire power system 100, and if the supply and demand situation forecast value is acquired on the day before the target day (or the supply and demand situation forecast value is predicted on the day before), the predetermined day is the next day, and if the supply and demand situation forecast value is acquired on the target day itself, the predetermined day is the current day.

[0031] The supply and demand situation forecast value acquisition unit 12 acquires the supply and demand situation forecast value, for example, from the second server device 50. The supply and demand situation forecast value acquisition unit 12 may acquire, for example, the so-called "Denki Yoho" (registered trademark, the same applies below) from the second server device 50 or the like. The electricity forecast includes, for example, the power of the power grid 100 for the next day. For example, the electricity forecast makes it possible to know the peak times of power demand and peak times of usage rate regarding the power supply and demand situation. The supply and demand situation forecast value acquisition unit 12 may acquire, for example, supply and demand situation forecast values in 30-minute or hourly increments, or may acquire only the maximum value of the supply and demand situation forecast values in daily increments.

[0032] The supply and demand situation forecast value acquisition unit 12 may acquire the supply and demand situation forecast value by predicting the supply and demand situation forecast value. There are no particular limitations on the method for predicting the supply and demand situation forecast value or the data required for the prediction, but for example, the supply and demand situation forecast value acquisition unit 12 may predict the supply and demand situation forecast value for a predetermined day based on the power sales for the current month, the power sales for past current months, etc. When the supply and demand situation forecast value acquisition unit 12 predicts the supply and demand situation forecast value, it is possible to omit acquisition of the maximum power actual value by the maximum power actual value acquisition unit 11.

[0033] The first determination unit 13 determines whether the maximum value of the supply and demand situation forecast values for a predetermined day exceeds the maximum power actual value. Furthermore, if the maximum value of the supply and demand situation forecast values exceeds the maximum power actual value, the first determination unit 13 determines the time period in which the maximum value occurs to be a control time period, and determines the predetermined day to be a power sales adjustment day on which the power sales of the electricity retailer will be adjusted.

[0034] A sales power adjustment day is a day on which a certain hour of that day may be a peak in power demand in the power system 100. A control time period is a time period during which energy resources 21 of consumers 20 and the like are controlled, and is, for example, one hour, but may also be 30 minutes, two hours, or some other time period. Furthermore, the control time period may include the time before and after the peak time period in addition to the peak time period.

[0035] The actual electricity sales record acquisition unit 14 acquires, from the first server device 40 or the like, actual electricity sales records for a predetermined time unit during an elapsed period of the first period of the electricity retailer. The predetermined time may be 30 minutes, 1 hour, 2 hours, or another time period. The actual electricity sales records may be values at the sending end or the demand end.

[0036] The prediction unit 15 calculates the predicted power sales value for a predetermined day from the actual power sales record acquired by the power sales record acquisition unit 14, for example, the actual power sales record for each day that has passed in the current month. The prediction unit 15 calculates the predicted power sales value for a predetermined day (for example, the next day) based on the actual power sales record for the current month. For example, if today is the 10th, the prediction unit 15 calculates the predicted power sales value for the 11th day of the current month based on the actual power sales record for the 1st to 9th days of the current month. Note that the prediction unit 15 may calculate the predicted power sales value for the predetermined day using the actual power sales record for periods outside the first period acquired by the power sales record acquisition unit 14.

[0037] The method for predicting the predicted power sales value and the data required for the prediction are not particularly limited, and any method may be used. The prediction unit 15 may predict the predicted power sales value for a predetermined time unit in a day, or may predict the maximum predicted power sales value on a predetermined day. The predetermined time may be 30 minutes, 1 hour, 2 hours, or another time. The predetermined day is a target day for determining whether or not a peak in power demand will occur in the entire power system 100. If the predicted power sales value is predicted on the day before the target day (or the predicted power sales value is obtained on the day before), the predetermined day is the next day. If the predicted power sales value is predicted on the target day (or the predicted power sales value is obtained on the day), the predetermined day is the day itself.

[0038] The second determination unit 16 determines whether the maximum value of the predicted power sales value for a predetermined day exceeds the actual power sales value for the first period. Furthermore, if the maximum value of the predicted power sales value exceeds the actual power sales value, the second determination unit 16 determines that the maximum power sales value is the maximum power sales value at that time in the first period. The actual power sales value for the first period is the actual power sales value for a period that has already passed within the first period, for example, the actual power sales value for each day up to the day before the predetermined day in the current month.

[0039] The control unit 17 executes various processes based on the determination results of at least one of the first determination unit 13 and the second determination unit 16. For example, when the first determination unit 13 determines that a predetermined day is a power sales adjustment day, the control unit 17 generates a control command to control the energy resources 21, etc. installed in the consumers 20, etc. that have a contract with the electricity retailer, during the control time slot. Furthermore, when the predicted power sales value during the control time slot exceeds the maximum actual power sales value, the control unit 17 generates a control command to control the energy resources 21, etc. installed in the consumers 20, etc. of the electricity retailer, during the control time slot. The maximum actual power sales value is an example of a reference value. For example, the reference value may be a fixed value set in advance. Furthermore, for example, the reference value may be zero. When the reference value is zero, it is possible to always control the energy resources 21, etc. on the power sales adjustment day.

[0040] The control command generated by the control unit 17 includes controlling or executing at least one of the electricity unit price, incentive unit price, charging power, discharging power, charging energy amount, discharging energy amount, charging current, discharging current, reduced power, reduced energy amount, timer, operation mode, and power saving request. For example, the control command may be a command to increase the electricity unit price for a time period in which the maximum value of the supply and demand situation forecast value exceeds the maximum power actual value (or to decrease the electricity unit price for a time period preceding the time period), or a command to increase the incentive unit price for the time period. Furthermore, for example, the control command may be a command to increase the charging power, charging energy amount, or charging current for a time period preceding the time period, or a command to increase the discharge power, discharging energy amount, discharging current, reduced power, or reduced energy amount for the time period. Furthermore, for example, the control command may be a command to make or change a control reservation or the like to reduce the amount of electricity sold during the time period, or a command to change the operation mode of the energy resource 21 or the like. Furthermore, the control command may be a command to request the consumer 20 or the like to save energy during the time period.

[0041] The notification unit 18 notifies the first server device 40 (i.e., the electricity retailer) of information based on the determination result of at least one of the first determination unit 13 and the second determination unit 16. The notification unit 18, for example, notifies the electricity retailer of the determination result by the first determination unit 13. For example, when the first determination unit 13 determines that the maximum value of the supply and demand situation forecast values exceeds the maximum power actual result, the notification unit 18 may notify an alert, may notify information indicating a time period (e.g., a control time period) in which the maximum value exceeds the maximum power actual result, or may notify information indicating the time period in addition to the alert. Furthermore, the notification unit 18 may notify the consumer 20, etc. of the control command generated by the control unit 17.

[0042] Furthermore, the notification unit 18 notifies the first server device 40 (i.e., the electricity retailer) of the determination result by the second determination unit 16, for example. For example, when the second determination unit 16 determines that the maximum value of the predicted power sales values for a predetermined day will exceed the actual power sales value for the first period, the notification unit 18 notifies the electricity retailer of at least the maximum value of the predicted power sales values for the predetermined day. The notification unit 18 is an example of a first notification unit.

[0043] 1 again, the consumer 20, etc. is a consumer that has a contract for the sale of electricity with a retail electricity supplier that is managed by the power management device 10. For example, the retail electricity supplier has the right to control the energy resources 21, etc. of the consumer 20, etc.

[0044] Consumers 20 and the like are connected to a power grid 100 and receive a supply of power from the power grid 100. Consumer 20 has an energy resource 21 and an uncontrollable load 22, and consumer 30 has an energy resource 31 and an uncontrollable load 32. Consumer 20 is required to have at least the energy resource 21, and consumer 30 is required to have at least the energy resource 31.

[0045] The energy resource 21 etc. here is a device capable of storing energy. The energy resource 21 etc. may be, for example, a secondary battery such as a storage battery, a charger or charger / discharger for an electric vehicle, or a heat pump water heater (for example, EcoCute (registered trademark)). The storage battery may be, for example, a home storage battery or a storage battery mounted on an electric vehicle.

[0046] The number of consumers who have a contract with an electricity retailer is not particularly limited as long as it is at least 1. In addition, the consumers who have a contract with an electricity retailer may include consumers who have only non-controllable loads.

[0047] The first server device 40 is a server device owned by an electricity retailer. The first server device 40 is realized by a non-volatile memory storing a program, a volatile memory that is a temporary storage area for executing the program, an input / output port, a communication interface, a processor that executes the program, etc. The first server device 40 is an example of a support device that supports a company that retails electricity.

[0048] FIG. 3 is a block diagram showing the functional configuration of first server device 40 according to this embodiment.

[0049] As shown in FIG. 3, the first server device 40 includes a receiving unit 41, a control unit 42, a presenting unit 43, and a notifying unit 44.

[0050] Receiver 41 receives information based on the determination results of first determiner 13 and second determiner 16 from power management apparatus 10.

[0051] The control unit 42 executes various processes based on information based on the determination result received by the receiving unit 41. The control unit 42 may, for example, cause the presentation unit 43 to present the information based on the determination result. The control unit 42 may also generate a control command to control the energy resources 21, etc. installed in the consumer 20, etc., during the control time period included in the determination result. Note that if the power management device 10 has a function to generate a control command, the control unit 42 does not need to have a function to generate a control command.

[0052] The presentation unit 43 presents information based on the determination result received by the receiving unit 41 to employees of the electricity retailer, etc. The presentation manner is not particularly limited, and the presentation unit 43 may, for example, have a display and present the information based on the determination result by image, or have a speaker and present the information based on the determination result by voice.

[0053] When the control unit 42 generates a control command, the notification unit 44 notifies the generated control command to the consumer 20, etc. The notification unit 44 is an example of a second notification unit.

[0054] 1 again, the second server device 50 is a server device owned by a business operator that manages the power system 100. The second server device 50 may be, for example, a server device owned by a general electricity transmission and distribution business operator.

[0055] The second server device 50 is realized by a non-volatile memory storing a program, a volatile memory that is a temporary storage area for executing the program, an input / output port, a communication interface, a processor that executes the program, and the like.

[0056] If the power management apparatus 10 is configured to predict a predicted value of power sales, the power management system 1 does not need to include the second server apparatus 50.

[0057] The network N is a communication line that connects the power management device 10, the first server device 40, and the second server device 50 so that they can communicate with each other. The type of communication line is not particularly limited, and may be any combination of a wired network and a wireless network. The network N may be, for example, a local area network or a wide area network including the Internet.

[0058] [2. Operation of the power management system] Next, the operation of the power management system 1 configured as above will be described with reference to Figs. 4 to 8. Fig. 4 is a flowchart showing the operation (power management method) of the power management apparatus 10 according to this embodiment. The following describes a case where the first period is one month. Furthermore, the power management apparatus 10 performs the operation shown in Fig. 4 every day, for example.

[0059] 4, the power management device 10 predicts whether or not maximum power will occur in the power system 100 on a predetermined day (S10), and if maximum power will occur, executes processing related to control of the energy resources 21, etc. (S20). As a result, if maximum power will occur on the predetermined day, the energy resources 21, etc. are controlled, making it possible to suppress the maximum power.

[0060] The following describes each step shown in Fig. 4. Fig. 5 is a flowchart showing the detailed operation (power management method) of step S10 shown in Fig. 4.

[0061] As shown in Fig. 5, the first determination unit 13 of the power management apparatus 10 determines whether the target day for determining whether maximum power (maximum demand power) will occur in the power grid is the first day of the current month (S11). If the target day is the 1st, the first determination unit 13 determines that it is the first day, and if the target day is the 2nd or later, it determines that it is not the first day. If the determination is made on the previous day (when the process shown in Fig. 4 is executed), the target day is the next day, and if the determination is made on the current day (when the process shown in Fig. 4 is executed), the target day is the current day. The target day corresponds to the above-mentioned predetermined day.

[0062] Step S11 can also be said to be a process of determining whether or not there is an actual power consumption record for the current month in order to determine whether or not the maximum power will occur in the power grid 100.

[0063] Next, if it is determined that the target day is not the first day of the month (No in S11), the supply and demand situation forecast value acquisition unit 12 acquires a supply and demand situation forecast value (S12). For example, when acquiring a supply and demand situation forecast value on the day before the target day, the supply and demand situation forecast value acquisition unit 12 acquires a supply and demand situation forecast value for each hour on the target day (i.e., the following day). Also, for example, when acquiring a supply and demand situation forecast value on the target day itself, the supply and demand situation forecast value acquisition unit 12 acquires a supply and demand situation forecast value from the current time onwards on the target day (i.e., the current day). If the target day is the current day, the supply and demand situation forecast value can be predicted by further using the actual supply and demand situation up to the current time on the current day. In other words, the accuracy of the prediction of the supply and demand situation forecast value is improved.

[0064] Next, the first determination unit 13 determines whether the maximum value of the supply and demand situation forecast value is equal to or greater than the maximum power actual value (S13). The maximum value of the supply and demand situation forecast value means, for example, the maximum value among the supply and demand situation forecast values for each hour on the target day. The maximum power actual value means the maximum value among the hourly power actual values up to the current time on the previous day or the current day in the current month, and if the determination in step S11 is No, the maximum power actual value is acquired by the maximum power actual value acquisition unit 11 before executing step S13.

[0065] In this way, the first determination unit 13 determines whether or not the maximum value of the demand situation forecast value for the target day (that is, the forecast value of the maximum power consumption for the target day) is equal to or greater than the actual maximum power consumption for the current month.

[0066] Next, if the first judgment unit 13 determines that the maximum value of the demand situation forecast value is not greater than or equal to the maximum actual power consumption (No in S13), it judges that the target date is not a sales power adjustment date (target date ≠ sales power adjustment date) (S14), and if it determines that the maximum value of the demand situation forecast value is greater than or equal to the maximum actual power consumption (target date = sales power adjustment date) (Yes in S13) or if the target date is the first day of the current month (Yes in S11), it judges that the target date is a sales power adjustment date (target date = sales power adjustment date) (S15).

[0067] Fig. 6 is a diagram for explaining the determination of whether the target date is a power sales adjustment date. Using Fig. 6, we will explain the case where the target date is not the first day of the month (No in S11), that is, where actual maximum power consumption data for the month exists. The vertical axis of Fig. 6 is power [10,000 kW], and the horizontal axis is time of day. The solid line indicates the change in the predicted supply and demand situation value for the target date, and the dashed line indicates the actual maximum power consumption for the month.

[0068] (a) of Figure 6 shows the predicted supply and demand situation value for the target day (1st) when the target day is not a sales power adjustment day, and (b) of Figure 6 shows the predicted supply and demand situation value for the target day (1st) when the target day is a sales power adjustment day.

[0069] As shown in (a) of Figure 6, if the supply and demand situation forecast value for the target day in the power system 100 is less than the maximum power actual value in the power system 100, the result in step S13 is No, and the target day is not determined to be a power sales adjustment day.

[0070] 6(b), if there is a time period in which the predicted value of the supply and demand situation on the target day in the power system 100 is equal to or greater than the maximum actual power consumption in the power system 100, the determination in step S13 is Yes, and the target day becomes the power sales adjustment day. Furthermore, the time period in which the predicted value of the supply and demand situation is equal to or greater than the maximum actual power consumption is a control time period in which adjustment is made by the energy resource 21, etc. Note that the control time period may include at least one of the time periods before and after the time period in which the predicted value of the supply and demand situation is equal to or greater than the maximum actual power consumption.

[0071] Even if the target day is a power sales adjustment day, adjustment of power sales by the energy resource 21 or the like may not be performed in a time period other than the control time period.

[0072] If the actual power consumption for the target day exceeds the maximum power consumption for the previous day, the maximum power consumption for the current month is updated to the actual power consumption for the target day. Then, when making the determination in step S13 on the day after the target day, the updated maximum power consumption is used as the maximum power consumption.

[0073] If the target date is the first day of the current month, that is, if there is no data on the actual maximum power consumption for the current month, for example, a predetermined value (an example of a reference value) or the actual maximum power consumption for the previous month may be used to determine whether the predicted supply and demand situation value is equal to or greater than that value, or threshold determination may not be performed. If threshold determination is not performed, the time period in which the predicted supply and demand situation value is the maximum value is determined as the control time period.

[0074] Referring again to FIG. 5, the notification unit 18 notifies the first server device 40 (i.e., the electricity retailer) of the determination result made by the first determination unit 13 (S16). The receiving unit 41 of the first server device 40 receives the determination result, and the presentation unit 43 presents the received determination result to employees of the electricity retailer. This makes it possible to inform employees of the electricity retailer that the target date is an electricity sales adjustment date. The determination result is an example of information based on the determination result. Note that the processing of step S16 may be omitted.

[0075] Next, detailed operations of step S20 shown in Fig. 4 will be described with reference to Fig. 7. Fig. 7 is a flowchart showing detailed operations (power management method) of step S20 shown in Fig. 4. Fig. 7 describes operations for executing processing related to control of energy resources 21, etc., when it is determined that the maximum value of the demand situation forecast value is equal to or greater than the maximum power actual value.

[0076] 7, the first determination unit 13 determines whether the target date is a power sales adjustment date (target date=power sales adjustment date) (S21). If the determination in step S15 in FIG. 4 has been made, the determination in step S21 is Yes.

[0077] Next, if the first judgment unit 13 determines that the target date is a sales power adjustment date (Yes in S21), the prediction unit 15 calculates (predicts) the sales power forecast value for the target date based on the sales power actual value for the later days of the month acquired by the sales power actual value acquisition unit 14 (S22).

[0078] Next, the notification unit 18 notifies the first server device 40 (i.e., the electricity retailer) of the acquired predicted power sales value (S23). The receiving unit 41 of the first server device 40 receives the predicted power sales value, and the presentation unit 43 presents the received predicted power sales value to an employee of the electricity retailer. This makes it possible to inform the employee of the electricity retailer of the predicted power sales value. Note that the processing of step S23 may be omitted.

[0079] Next, the second determination unit 16 determines whether the maximum value of the predicted power sales value is equal to or greater than the maximum actual power sales value in the time period in which the maximum value of the predicted supply and demand situation is equal to or greater than the maximum actual power sales value (S24). The maximum value of the predicted power sales value means, for example, the maximum value of the predicted power sales value for each hour on the target day. The maximum actual power sales value means the maximum value of the actual power sales value for each hour on the previous day or the current day in the current month.

[0080] Next, when the second determination unit 16 determines that there is a time slot in which the maximum value of the predicted power sales value is equal to or greater than the maximum actual power sales value (Yes in S24), the second determination unit 16 generates a control command for the control time slot (S25).

[0081] Next, the notification unit 18 notifies the consumer 20, etc. of a control command based on the determination result by the second determination unit 16 (S26). Notifying the control command is an example of notifying information based on the determination result of the first determination unit 13.

[0082] In this way, when the predicted value of electric power sales becomes equal to or greater than the maximum electric power sales performance, the energy resources 21 and the like are controlled.

[0083] Furthermore, if the determination in step S21 or step S24 is No, power management apparatus 10 ends the processing of step S20.

[0084] Next, the operation of the first server device 40 will be described with reference to Fig. 8. Fig. 8 is a flowchart showing the operation (support method) of the first server device 40 according to this embodiment. Fig. 8 illustrates an example of the operation executed on the day before the target day when energy storage control is performed in advance to ensure sufficient room for controlling the energy resources 21, etc. during the control time period. In addition, an example will be described in which the consumer 20, etc. has a storage battery as the energy resource 21, etc. over which the electricity retailer has the right to control.

[0085] 8, the control unit 42 determines whether the next day is a power sales adjustment day (S31). For example, if the power management device 10 has performed the determination in step S15 shown in FIG. 5 on the day before the target day, the determination in step S31 is Yes.

[0086] Next, if the control unit 42 determines that the next day is the power sales adjustment day (Yes in S31), the receiving unit 41 acquires the remaining charge of the storage battery from the consumer 20 or the like via the communication line 110 (S32). The remaining charge acquired here is the remaining charge at the current time.

[0087] Next, the control unit 42 determines whether the remaining charge of the storage battery is 80% or more (S33). The control unit 42 performs the determination in step S33, for example, for each storage battery of the consumer 20, etc. Note that the threshold is not limited to 80%, and another preset value may be used. The threshold may be, for example, 70%, 90%, or another value. The threshold may also be set according to the maximum value of the supply and demand situation forecast value and the maximum power actual result. For example, the threshold may be set to a higher value as the difference between the maximum value of the supply and demand situation forecast value and the maximum power actual result increases. Furthermore, in step S33, the control unit 42 may further calculate a remaining charge predicted value for the control time slot from the remaining charge of the storage battery acquired in step S32, and determine whether the remaining charge predicted value is equal to or greater than the threshold.

[0088] If the control unit 42 determines that the remaining charge of the storage battery is 80% or more (Yes in S33), it proceeds to step S35, and if it determines that the remaining charge of the storage battery is less than 80% (No in S33), it proceeds to step S34.

[0089] Next, when the control unit 42 determines that the remaining charge of the storage battery is less than 80% (No in S33), it transmits a control command to the consumer 20 or the like that owns the storage battery via the notification unit 44 to forcibly charge the storage battery to 80% (or 80% or more) (S34). The control command here includes, for example, a command to forcibly charge the storage battery so that the remaining charge reaches a predetermined value (here, 80%) or more before the control time slot of the next day (for example, up to one hour before that). The control command may include, for example, a command to charge the storage battery to its maximum charge capacity. Furthermore, the control command may include, for example, a command to complete charging on the day before the power sales adjustment day.

[0090] In addition, when the energy resource 21, etc. is a heat pump water heater, the control command may include a command to cause the heat pump water heater installed in the residence of the consumer 20, etc. to complete hot water heating by a predetermined time (for example, three hours) before the control time slot of the next day. In other words, the control command may include a command to prevent the heat pump water heater from heating hot water during the control time slot of the next day.

[0091] Next, the control unit 42 transmits a control command to prohibit discharging of the storage battery via the notification unit 44 (S35). The control unit 42 transmits the control command to each of the consumers 20, etc., for example.

[0092] As a result, sufficient power is charged in the storage battery during the control time period, so that the amount of power sold can be reliably reduced on the power sales adjustment day.

[0093] Next, the control unit 42 determines whether or not the target date is a power sales adjustment date (target date=power sales adjustment date) (S36). The control unit 42 determines whether or not today is a power sales adjustment date.

[0094] Next, when the control unit 42 determines that the target day is a power sales adjustment day (Yes in S36), it permits the discharge of the storage battery and transmits a control command to discharge the storage battery during the control time period via the notification unit 44 (S37). The control unit 42 may forcibly discharge the storage battery.

[0095] Furthermore, if the control unit 42 determines that the target day is not a power sales adjustment day (No in S36), it returns to step S36 and continues the process, thereby allowing the storage battery to hold power for adjustment until the power sales adjustment day arrives.

[0096] Although FIG. 8 shows that the processes from step S31 to step S35 are performed the day before, they may be performed before the control time slot on the day.

[0097] (Variations of the embodiment) The power management device according to each of the modifications will be described below with reference to Figures 9 to 11. The following description will focus on differences from the embodiment, and descriptions of content that is the same as or similar to the embodiment will be omitted or simplified.

[0098] 9 to 11 are block diagrams showing functional configurations of power management devices according to the respective modifications of the embodiment.

[0099] 9 is a block diagram showing the functional configuration of power management apparatus 10a having a configuration in which control unit 17 is omitted from power management apparatus 10 according to the embodiment. In this manner, power management apparatus 10a may include maximum power result acquisition unit 11, supply and demand situation forecast value acquisition unit 12, first determination unit 13, power sales result acquisition unit 14, prediction unit 15, second determination unit 16, and notification unit 18.

[0100] In this case, power management apparatus 10a can perform the operations shown in Fig. 4 and steps S21 to S24 shown in Fig. 6. Furthermore, notification unit 18 may notify first server device 40 (i.e., the electricity retailer) of the determination result of step S24. Furthermore, in this case, presentation unit 43 of first server device 40 may present the determination result of step S24 to the employee.

[0101] 10 is a block diagram showing the functional configuration of power management device 10b, which has a configuration in which power sales record acquisition unit 14, prediction unit 15, second determination unit 16, and control unit 17 are omitted from power management device 10 according to the embodiment. In this manner, power management device 10b may include maximum power record acquisition unit 11, supply and demand situation forecast value acquisition unit 12, first determination unit 13, and notification unit 18. In other words, power management device 10b may only include a configuration for predicting the supply and demand situation forecast value for the entire power system 100.

[0102] In this case, power management apparatus 10b can perform the operations shown in Fig. 4. In this case, presentation unit 43 of first server apparatus 40 may present the determination result notified in step S16 to the employee.

[0103] 11 is a block diagram showing the functional configuration of power management device 10c, which has a configuration obtained by omitting power sales record acquisition unit 14, prediction unit 15, and second determination unit 16 from power management device 10 according to the embodiment. In this manner, power management device 10c may include maximum power record acquisition unit 11, supply and demand situation forecast value acquisition unit 12, first determination unit 13, control unit 17, and notification unit 18.

[0104] In this case, power management apparatus 10c can execute the operations shown in FIG. 4 and steps S25 and S26 shown in FIG.

[0105] (Effects, etc.) The invention derived from the disclosure of this specification and the effects and the like obtained by said invention will be described below.

[0106] (Invention 1) The power management device (for example, power management devices 10 to 10c) includes a maximum power result acquisition unit that acquires the maximum power result of a power system for a predetermined period in at least summer and winter, a supply and demand situation forecast value acquisition unit that acquires a supply and demand situation forecast value for the power system on a predetermined day within the predetermined period, and a first determination unit that determines whether the maximum value of the supply and demand situation forecast value on the predetermined day exceeds the maximum power result.

[0107] This makes it possible to determine whether the maximum value of the supply and demand situation forecast value for a specified day exceeds the maximum power actual value (maximum power actual value). For example, the business operator can take measures to reduce the power sold on a specified day depending on the determination result. Therefore, if the time period in which the maximum value exceeds the maximum power actual value is the time period in which the maximum value of the entire power system occurs, the business operator can reduce the power sold during that time period. Therefore, the power management device can reduce the capacity contribution paid by the business operator that retails electricity.

[0108] (Invention 2) The first determination unit is a power management device of Invention 1, which, when the maximum value among the supply and demand situation forecast values exceeds the maximum power actual value, determines the time period in which the maximum value occurs to be a control time period for controlling the power sold by the electricity retailer.

[0109] This makes it possible to identify the control time periods, making it possible to effectively reduce the amount of power sold during time periods when the maximum value of the entire power system is likely to occur. Furthermore, when the control time periods are notified to a business operator as information based on the determination result of the first determination unit, the business operator can understand the control time periods and can take more effective measures to reduce the amount of power sold. Therefore, the power management device can effectively reduce the capacity contributions paid by businesses that retail electricity.

[0110] (Invention 3) The power management device of invention 1 or 2 further comprises a first notification unit that notifies information based on the determination result of the first determination unit.

[0111] This allows, for example, when the maximum value of the predicted supply and demand situation for a specific day exceeds the maximum power actual result, to notify the electricity retailer of this fact.

[0112] (Invention 4) The power management device of Invention 3 further comprises a sales power record acquisition unit that acquires the business operator's sales power record, a forecast acquisition unit that acquires a sales power forecast value for the specified day based on the sales power record acquired by the sales power record acquisition unit, and a second judgment unit that judges whether the maximum value of the sales power forecast value for the specified day exceeds the sales power record for the specified period, and the first notification unit further notifies information based on the judgment result of the second judgment unit.

[0113] This allows, for example, the business operator to be notified that the business operator's power sales exceed the maximum value of the actual results for a predetermined period.The business operator can then take measures to reduce the power sales on a predetermined day using information based on the determination result of the second determination unit.As a result, the power management device can effectively reduce the capacity contribution paid by the business operator that retails electricity.

[0114] (Invention 5) In the power management device of Invention 4, when the maximum value among the predicted sales power values exceeds the actual sales power value, the second determination unit determines the maximum value to be the maximum sales power, and the first notification unit notifies the maximum value determined to be the maximum sales power.

[0115] This makes it possible to calculate an estimate of the capacity contribution based on the maximum value [kW] and the contract price [kW / yen]. The business operator can then take measures to reduce the amount of electricity sold according to the estimated amount. Therefore, the power management device can effectively reduce the capacity contribution paid by the business operator that retails electricity.

[0116] (Invention 6) The power management device of any of Inventions 3 to 5 further includes a control unit, wherein the first determination unit determines that the specified day is a power sales adjustment day when the maximum value among the supply and demand situation forecast values exceeds the maximum power actual value, and when the first determination unit determines that the specified day is the power sales adjustment day, the control unit generates a control command to control energy resources installed in consumers that have a contract with the business during the control time period, and the first notification unit notifies the control command.

[0117] This allows the energy resource to discharge during the control time period, thereby reliably reducing the power sold by the business on a specific day, thereby reliably reducing capacity contributions. Furthermore, since the predicted power sales value is not calculated, the processing load of the power management device can be reduced compared to when the predicted power sales value is calculated.

[0118] (Invention 7) The power management device of any of Inventions 4 to 6 further comprises a control unit, which generates a control command for controlling energy resources installed in consumers that have a contract with the business during the control time period when the sales power forecast value during the control time period exceeds a reference value, and the first notification unit notifies the control command.

[0119] This allows energy resources to be controlled only when a peak in power demand occurs across the entire power system and the operator's predicted sales power value exceeds a reference value, thereby preventing unnecessary control of the energy resources.

[0120] (Invention 8) The power management device of Invention 7 is such that the control unit determines a maximum actual sales power value for the specified period based on the actual sales power value acquired by the actual sales power value acquisition unit, and the reference value is the maximum actual sales power value.

[0121] This allows energy resources to be controlled only when the predicted power sales value of the business operator exceeds the maximum actual power sales value, thereby further reducing unnecessary control of the energy resources. For example, frequent control is reduced, which can reduce the processing load of the power management device.

[0122] (Invention 9) In the power management device of any of Inventions 6 to 8, the control command generated by the control unit includes changing or executing at least one of the electricity rate unit price, incentive unit price, charging power, discharging power, charging energy amount, discharging energy amount, charging current, discharging current, reduced power, reduced energy amount, timer, operating mode, and power saving request.

[0123] This makes it possible to notify control commands according to the characteristics, status, etc. of the customer or equipment.

[0124] (Invention 10) A support device (e.g., a first server device 40) that supports businesses that retail electricity, comprising: a receiving unit that receives information based on the judgment result from a power management device of any of Inventions 1 to 9; and a presentation unit that presents information based on the judgment result of the first judgment unit.

[0125] As a result, if the maximum value of the supply and demand situation forecast for a specified day exceeds the maximum power actual value (maximum power actual value), information based on the judgment result can be presented to the business operator (e.g., the business operator's employee). Since the business operator can take measures to reduce the power sold on the specified day, if the time period in which the maximum value exceeds the maximum power actual value is the time period in which the maximum value of the entire power system occurs, the business operator can reduce the power sold during that time period. Therefore, the support device can reduce the capacity contribution paid by the business operator that retails electricity.

[0126] (Invention 11) The information based on the determination result includes information indicating a control time period during which the electricity sold by the business is controlled, and the support device of Invention 10 is equipped with a control unit that generates a first control command to control energy resources installed in consumers that have a contract with the business during the control time period, and a second notification unit that notifies the first control command.

[0127] As a result, by having the energy resource discharge or the like during the control time period, it is possible to reliably reduce the amount of electricity sold by the business on a given day, and therefore it is possible to reliably reduce the capacity contribution fee.

[0128] (Invention 12) The control unit generates a second control command to bring the energy resource set for the consumer into a predetermined state before the control time period when the first determination unit determines that the maximum value among the supply and demand situation forecast values for the specified day exceeds the maximum power actual value, and the second notification unit notifies the second control command, which is an assistance device of Invention 11.

[0129] This allows the energy resources to be in a predetermined state before the control time period, so the amount of electricity sold during the control time period can be reduced compared to when the energy resources are in a predetermined state during the control time period.

[0130] (Invention 13) The support device of invention 12, wherein the energy resource includes a rechargeable device, and the predetermined state includes a state in which the device is charged to a predetermined level or more.

[0131] This makes it possible to ensure sufficient room for controlling chargeable and dischargeable appliances on the power sales adjustment day, thereby ensuring a reduction in the amount of power sold.

[0132] (Invention 14) The control unit generates a third control command that prohibits the device from discharging after the device has reached the specified state until the control time period begins, and the second notification unit notifies the third control command, in the support device of Invention 13.

[0133] This allows a predetermined state to be maintained until the control time period begins, making it possible to more reliably reduce the amount of electricity sold.

[0134] (Invention 15) The support device of Invention 13 or 14, wherein the energy resource includes a heat pump water heater, and the predetermined state includes a state in which the heat pump water heater has completed heating water to a predetermined level or more.

[0135] This makes it possible to prevent the heat pump water heater from heating water during the control time period, thereby ensuring a reduction in the amount of electricity sold.

[0136] (Invention 16) This is a power management method that acquires the actual maximum power consumption of a power system for a predetermined period in at least summer and winter, acquires a predicted supply and demand situation value for the power system on a predetermined day within the predetermined period, determines whether the maximum value of the predicted supply and demand situation value for the predetermined day exceeds the actual maximum power consumption, and notifies information based on the determination result.

[0137] This provides the same effects as the power management device described above.

[0138] (Invention 17) A program for causing a computer to execute the power management method of Invention 16.

[0139] This provides the same effects as the power management device described above.

[0140] These general or specific aspects may be realized as a system, a method, an integrated circuit, a computer program, or a non-transitory recording medium such as a computer-readable CD-ROM, or as any combination of the system, method, integrated circuit, computer program, or recording medium. The program may be pre-stored in the recording medium, or may be supplied to the recording medium via a wide area communication network including the Internet.

[0141] (Other embodiments) The power management device and the like according to one or more aspects have been described above based on the embodiments, but the present invention is not limited to these embodiments. As long as they do not deviate from the spirit of the present invention, various modifications conceivable by those skilled in the art to the present embodiments and forms constructed by combining components of different embodiments may also be included in the present invention.

[0142] For example, the support device may perform some or all of the processing performed by the power management device in the above-described embodiments, or the power management device may perform some or all of the processing performed by the support device. For example, the power management device and the support device may be realized by a single device (a single computer).

[0143] In the determinations in the above embodiments, the determination of whether or not it is equal to or greater than can be replaced with the determination of whether or not it exceeds. Similarly, the determination of whether or not it is less than can be replaced with the determination of whether or not it is equal to or less than.

[0144] In addition, although the above-described embodiments and the like have been described as examples in which the supply and demand situation forecast value is predicted either on the day before the target day or on the target day, it may be predicted on both days. For example, the supply and demand situation forecast value calculated by prediction on the previous day may be corrected (fine-tuned) based on the supply and demand situation forecast value predicted on the target day.

[0145] Furthermore, the summer and winter periods in the above embodiments may be set as appropriate depending on the region, country, climate, or the like.

[0146] In the above embodiments, each component may be configured with dedicated hardware, or may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU or processor reading and executing a software program recorded on a recording medium such as a hard disk or semiconductor memory.

[0147] The order in which the steps in the flowchart are executed is merely an example for specifically explaining the present invention, and an order other than the above may be used. Also, some of the steps may be executed simultaneously (in parallel) with other steps, or some of the steps may not be executed.

[0148] The division of functional blocks in the block diagram is an example, and multiple functional blocks may be realized as a single functional block, one functional block may be divided into multiple blocks, or some functions may be moved to another functional block.Furthermore, the functions of multiple functional blocks having similar functions may be processed in parallel or time-shared by a single piece of hardware or software.

[0149] Furthermore, at least one of the power management apparatus and the support apparatus according to the above-described embodiments may be realized as a single apparatus or may be realized by multiple apparatuses. When at least one of the power management apparatus and the support apparatus is realized by multiple apparatuses, the components of at least one of the power management apparatus and the support apparatus may be distributed in any manner among the multiple apparatuses. When at least one of the power management apparatus and the support apparatus is realized by multiple apparatuses, the communication method between the multiple apparatuses is not particularly limited and may be wireless communication or wired communication. Furthermore, wireless communication and wired communication may be combined between the apparatuses.

[0150] Furthermore, each component described in the above embodiments may be implemented as software or, typically, as an LSI, an integrated circuit. These components may be integrated individually on a single chip, or some or all of them may be integrated on a single chip. While LSI is used here, it may also be referred to as an IC, system LSI, super LSI, or ultra LSI depending on the level of integration. Furthermore, the integration method is not limited to LSI; it may be implemented using a dedicated circuit (a general-purpose circuit that executes a dedicated program) or a general-purpose processor. It is also possible to use a field programmable gate array (FPGA), which can be programmed after LSI fabrication, or a reconfigurable processor, which allows the connection or settings of circuit cells within an LSI to be reconfigured. Furthermore, if an integrated circuit technology that can replace LSI emerges due to advances in semiconductor technology or a derivative technology, that technology may naturally be used to integrate the components.

[0151] A system LSI is an ultra-multifunctional LSI manufactured by integrating multiple processing units on a single chip, and is specifically a computer system consisting of a microprocessor, ROM (Read Only Memory), RAM (Random Access Memory), etc. Computer programs are stored in the ROM. The system LSI achieves its functions when the microprocessor operates in accordance with the computer program.

[0152] Furthermore, one aspect of the present invention may be a computer program that causes a computer to execute each of the characteristic steps included in the power management method shown in any of Figures 4, 5, and 7, and the support method shown in Figure 8.

[0153] Furthermore, for example, the program may be a program to be executed by a computer. Another aspect of the present invention may be a computer-readable non-transitory recording medium on which such a program is recorded. For example, such a program may be recorded on a recording medium and distributed or circulated. For example, the distributed program may be installed in a device having another processor, and the program may be executed by the processor, thereby causing the device to perform each of the above processes. [Explanation of symbols]

[0154] 10, 10a, 10b, 10c power management equipment 11 Maximum power performance acquisition section 12. Supply and demand forecast value acquisition unit 13 1st Judgment Section 14 Sales Electricity Performance Acquisition Department 15 Prediction Department 16 Second Judgment Section 17, 42 Control section 18 Notification Department (1st Notification Department) 20, 30 Consumer 21, 31 Energy Resources 40 First server device (support device) 41 Receiving unit 43 Tips Department 44 Notification Department (Second Notification Department) 100 Power System

Claims

1. a maximum power result acquisition unit that acquires maximum power results of the power system for a predetermined period in at least summer and winter; a supply and demand situation forecast value acquisition unit that acquires a supply and demand situation forecast value for a predetermined day within the predetermined period in the power grid; a first determination unit that determines whether or not the maximum value of the supply and demand situation forecast value for the predetermined day exceeds the maximum power actual result. Power management device.

2. When the maximum value of the supply and demand situation forecast value exceeds the maximum power actual result, the first determination unit determines that the time period in which the maximum value occurs is a control time period in which the power sold by the electricity retailer is controlled. The power management device of claim 1 .

3. Further, a first notification unit that notifies information based on the determination result of the first determination unit is provided. The power management device of claim 2 .

4. Furthermore, a sales electricity record acquisition unit that acquires the sales electricity record of the business operator; a forecast acquisition unit that acquires a sales power forecast value for the predetermined day based on the sales power record acquired by the sales power record acquisition unit; a second determination unit that determines whether or not a maximum value of the predicted power sales value for the predetermined date exceeds the actual power sales value for the predetermined period, The first notification unit further notifies information based on the determination result of the second determination unit. The power management device of claim 3 .

5. the second determination unit determines, when the maximum value of the predicted power sales values exceeds the actual power sales value, that the maximum value is a maximum power sales value; The first notification unit notifies the maximum value determined to be the maximum sold power. The power management device of claim 4 .

6. Further, a control unit is provided, the first determination unit determines that the predetermined day is a power sales adjustment day when the maximum value of the supply and demand situation forecast values exceeds the maximum power actual value; the control unit generates a control command to control energy resources installed in a consumer contracted with the business during the control time period when the first determination unit determines that the predetermined day is the power sales adjustment day; The first notification unit notifies the control command. The power management device according to any one of claims 3 to 5.

7. Further, a control unit is provided, the control unit generates a control command to control energy resources installed in consumers that have contracts with the business during the control time slot when the sales power forecast value during the control time slot exceeds a reference value; The first notification unit notifies the control command. The power management device according to claim 4 or 5.

8. the control unit determines a maximum actual sales power value for the predetermined period based on the actual sales power value acquired by the actual sales power value acquisition unit; The reference value is the maximum actual sales power. The power management apparatus of claim 7.

9. The control command generated by the control unit includes a change or execution of at least one of an electricity rate unit price, an incentive unit price, charging power, discharging power, charging power amount, discharging power amount, charging current, discharging current, reduced power, reduced power amount, a timer, an operation mode, and a power saving request. The power management device of claim 6.

10. A support device that supports a business operator that retails electricity, a receiving unit that receives information based on a determination result of the first determining unit from the power management device according to any one of claims 1 to 5; a presentation unit that presents information based on the determination result. Support equipment.

11. the information based on the determination result includes information indicating a control time period during which the electric power sold by the business operator is controlled; a control unit that generates a first control command to control an energy resource installed in a consumer that has a contract with the company during the control time period; a second notification unit that notifies the first control command. The assistance device according to claim 10.

12. the control unit generates a second control command to set the energy resource set for the consumer to a predetermined state before the control time slot when the first determination unit determines that the maximum value of the supply and demand situation forecast value for the predetermined day exceeds the maximum power actual result; The second notification unit notifies the second control command. The assistance device according to claim 11.

13. the energy resource includes a rechargeable device; The predetermined state includes a state in which the device is charged to a predetermined level or more. Assistance device according to claim 12.

14. the control unit generates a third control command to prohibit discharge of the device during a period from when the device has reached the predetermined state until when the control time period has arrived; The second notification unit notifies the third control command.

14. The assist device of claim 13.

15. the energy resource includes a heat pump water heater; The predetermined state includes a state in which the heat pump water heater has completed heating water for a predetermined period or more.

14. The assist device of claim 13.

16. Obtain the maximum power records of the power system for a predetermined period in at least summer and winter, obtaining a supply and demand situation forecast value for the power grid on a predetermined day within the predetermined period; It is determined whether the maximum value of the supply and demand situation forecast value for the predetermined day exceeds the maximum power actual value. Power management methods.

17. A program for causing a computer to execute the power management method according to claim 16.

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