Management system, management method and program

Abstract

Provided is a management system etc. capable of calculating the monetary benefits of self-consumption of electricity generated by a solar power generation facility. [Solution] The management system 100 is a management system that manages consumers in which solar power generation equipment 10 is installed, and includes a unit price acquisition unit (e.g., a communication unit 41) that acquires the electricity purchase price and electricity sale price, and a calculation unit (e.g., an effect amount calculation unit 42) that calculates the amount of effect resulting from the consumer's self-consumption of at least a portion of the generated electricity based on the amount of electricity consumed by the consumer from the amount of electricity generated by the solar power generation equipment 10, the electricity purchase price, and the electricity sale price.

Description

[Technical field]

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

[0002] Patent Document 1 discloses an energy management system that displays the amount of electricity consumed in a residence as an electricity bill. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-191524 A Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, the number of dwellings with photovoltaic power generation facilities installed has been increasing. For such dwellings, it is sometimes desirable to calculate the monetary benefits of self-consumption of electricity generated by the photovoltaic power generation facilities. However, Patent Document 1 does not disclose how to calculate such monetary benefits.

[0005] Therefore, the present invention provides a management system, a management method, and a program capable of calculating the monetary benefit of self-consumption of electricity generated by a photovoltaic power generation facility. [Means for solving the problem]

[0006] A management system according to one embodiment of the present invention is a management system for managing consumers in which solar power generation equipment is installed, and includes a unit price acquisition unit that acquires a power purchase price and a power sale price, and a calculation unit that calculates the monetary effect of self-consumption of at least a portion of the generated power based on the amount of self-consumption electricity consumed by the consumer from the amount of power generated by the solar power generation equipment, the power purchase price, and the power sale price.

[0007] A management method according to one embodiment of the present invention is a method for managing a consumer that has installed solar power generation equipment, which obtains a power purchase price and a power sale price, and calculates the monetary benefit of self-consumption of at least a portion of the generated power based on the amount of self-consumption electricity consumed by the consumer from the amount of power generated by the solar power generation equipment, the power purchase price, and the power sale price.

[0008] A program according to one aspect of the present invention is a program for causing a computer to execute the above-described management method. Effect of the Invention

[0009] According to one aspect of the present invention, it is possible to realize a management system or the like capable of calculating the monetary benefit resulting from self-consumption of electricity generated by a photovoltaic power generation facility. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a block diagram illustrating a functional configuration of a management system according to an embodiment. [Diagram 2] FIG. 2 is a sequence diagram showing an operation of collecting various information in the management system according to the embodiment. [Diagram 3] FIG. 3 is a sequence diagram showing the operation of calculating and presenting an effective monetary amount in the management system according to the embodiment. [Figure 4] FIG. 4 is a diagram showing a first example of a presentation of an effect amount according to the embodiment. [Diagram 5] FIG. 5 is a diagram showing a second example of the presentation of the effect amount according to the embodiment. [Figure 6] FIG. 6 is a block diagram showing a functional configuration of a management system according to a modification of the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, the embodiment will be specifically described with reference to the drawings.

[0012] The embodiments described below are all comprehensive or specific examples. The numerical values, shapes, components, component arrangement and connection forms, steps, and order of steps 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 that are not described in the independent claims are described as optional components.

[0013] In addition, each figure is a schematic diagram and is not necessarily illustrated precisely. Therefore, for example, the scales in each figure do not necessarily match. In addition, in each figure, substantially the same configurations are given the same reference numerals, and duplicated explanations are omitted or simplified.

[0014] Furthermore, in this specification, numerical values ​​and numerical ranges are not expressions that express only the strict meaning, but are expressions that include a substantially equivalent range, for example, a difference of about a few percent (or about 10%).

[0015] (Embodiment) Hereinafter, a management system according to the present embodiment will be described with reference to FIGS.

[0016] [1. Management system configuration] First, the configuration of a management system according to the present embodiment will be described with reference to Fig. 1. Fig. 1 is a block diagram showing the functional configuration of a management system 100 according to the present embodiment.

[0017] As shown in Fig. 1, the management system 100 includes a photovoltaic power generation facility 10, a power conditioner 20, a distribution board 30, a control device 40, a load 50, a router 60, a mobile terminal 70, and a power company server 80. Fig. 1 also illustrates a system power supply 120 and the Internet 130. Each of the components included in the management system 100, except for the mobile terminal 70 and the power company server 80, is provided in a facility 110. The facility 110 is an example of a consumer. The management system 100 can also be said to be a system that manages a consumer in which the photovoltaic power generation facility 10 is installed.

[0018] The solar power generation facility 10 is installed on the roof of a facility 110 or the like, and generates power by converting sunlight into electricity. Specifically, the solar power generation facility 10 is realized by a solar cell module including a PV (PhotoVoltaic) panel.

[0019] The power conditioner 20 is a power conversion device for using the power generated by the photovoltaic power generation equipment 10 within the facility 110. Specifically, the power conditioner 20 is realized by an inverter circuit or the like.

[0020] The distribution board 30 is a device that distributes power supplied from a system power supply 120. Specifically, the distribution board 30 distributes power to a plurality of branch circuits branched off from a trunk line 31. A load 50 installed in a facility 110 is connected to the branch circuit.

[0021] The distribution board 30 includes a generated power acquisition unit 30a and a sold power acquisition unit 30b. The generated power acquisition unit 30a may be provided in the power conditioner 20, for example.

[0022] The generated power acquiring unit 30a acquires the amount of generated power generated by the solar power generation facility 10. The generated power acquiring unit 30a may include, for example, a power measuring element, and acquire the amount of generated power by the power measuring element measuring the amount of generated power (for example, the amount of power supplied from the power conditioner 20 to the distribution board 30). Note that the generated power acquiring unit 30a may acquire the amount of generated power measured by a power meter that measures the amount of generated power of the solar power generation facility 10.

[0023] The power sale acquisition unit 30b acquires the amount of power sale supplied (sold) to the grid power source 120. The power sale acquisition unit 30b may include, for example, a power measurement element, and acquire the amount of power sale by the power measurement element measuring the amount of power sale. Note that the power sale acquisition unit 30b may acquire the amount of power sale measured by a power meter that measures the amount of power sale that is sold to the grid power source 120 out of the amount of power generated by the photovoltaic power generation facility 10.

[0024] The power measurement elements included in the generated power acquisition unit 30a and the sold power acquisition unit 30b are specifically CT (Current Transformer) elements, but may also be Rogowski circuits or GMR (Giant Magnetic Resistance) elements. By providing the power measurement elements, the distribution board 30 can measure the amount of generated power and the amount of sold power. The amount of generated power and the amount of sold power may be, for example, a 30-minute integrated value or a 1-hour integrated value.

[0025] The distribution board 30 also has a wireless communication module for wireless communication, and is capable of wireless communication with the control device 40 via the router 60. In other words, the wireless communication module is a wireless communication circuit. This allows the distribution board 30 to transmit the amount of generated power acquired by the generated power acquisition unit 30a and the amount of sold power acquired by the sold power acquisition unit 30b to the control device 40. The amount of generated power and the amount of sold power are stored in a memory unit 43 provided in the control device 40 as history information on the amount of generated power and the amount of sold power.

[0026] It is not essential that the distribution board 30 has a power measurement function and a communication function. For example, the management system 100 may include a smart meter (that is, a power meter having a communication function) in addition to the distribution board 30.

[0027] The control device 40 is a device that calculates (manages) the economic effect (profit) due to the installation of the solar power generation equipment 10 in the facility 110, and in this embodiment, functions as an effect amount calculation device that calculates an effect amount. Specifically, the control device 40 includes a communication unit 41, an effect amount calculation unit 42, and a storage unit 43. Although not shown, the control device 40 may also include a user interface that accepts operations by a user (a resident if the facility 110 is a residence), and a display unit (an example of a presentation unit) for displaying the calculated effect amount. The effect amount is the amount of money saved in terms of electricity bill payments by the consumer.

[0028] The communication unit 41 is a wireless communication module for the control device 40 to communicate with the power conditioner 20 and the distribution board 30. In other words, the wireless communication module is a wireless communication circuit. The communication unit 41 acquires, for example, the amount of power generated by the photovoltaic power generation facility 10 acquired by the generated power acquisition unit 30a of the distribution board 30 and the amount of power sold to the grid power source 120 acquired by the power sale acquisition unit 30b from the distribution board 30. The amount of power generated and the amount of power sold may be acquired in real time or may be acquired periodically in a lump. In addition, the amount of power generated and the amount of power sold may be added with information indicating the time of measurement. The communication standard of the wireless communication performed by the communication unit 41 is, for example, ECHONET Lite (registered trademark), but may be another communication standard, and is not particularly limited.

[0029] Furthermore, the communication unit 41 acquires, via the router 60, from the mobile terminal 70, the power selling price when selling power to the power grid 120, and acquires, via the router 60, the power purchasing price when purchasing power from the power grid 120, from the power company server 80. The communication unit 41 is an example of a unit price acquisition unit.

[0030] In addition, the communication unit 41 may transmit the effect amount calculated by the effect amount calculation unit 42 to an external device such as a mobile terminal 70 via the router 60.

[0031] Note that the control device 40 may acquire at least one of the power purchase price and the power sale price, for example, via a user interface included in the control device 40. In this case, the user interface is an example of a price acquisition unit.

[0032] The monetary effect calculation unit 42 calculates the monetary effect of the self-consumption of the power generated by the solar power generation facility 10 based on various information acquired by the communication unit 41. Specifically, the monetary effect calculation unit 42 calculates the monetary effect of the self-consumption of at least a part of the generated power based on the amount of self-consumption consumed by the facility 110 out of the amount of power generated by the solar power generation facility 10, the power purchase price, and the power sale price. The monetary effect calculation unit 42 is characterized in that it calculates the monetary effect by also using the power sale price in order to take into account the amount that would be incurred if the amount of self-consumption was sold. The monetary effect calculation unit 42 is an example of a calculation unit.

[0033] The storage unit 43 stores various types of information acquired by the communication unit 41. The storage of the various types of information acquired by the communication unit 41 is performed by a control unit (not shown) included in the control device 40, for example.

[0034] The storage unit 43 stores, for example, the power purchase price and the power sale price acquired by the communication unit 41 in association with information indicating the period during which the power purchase price and the power sale price are applied, as history information on the power purchase price and the power sale price. The information indicating the period associated with the power purchase price may be provided by, for example, the power company server 80 or the mobile terminal 70 (for example, a user). Furthermore, the information indicating the period associated with the power sale price may be provided by, for example, the mobile terminal 70 (for example, a user).

[0035] Furthermore, the memory unit 43 stores, for example, the amount of generated power and the amount of sold power acquired by the communication unit 41 in association with the date and time (timestamp) when the amount of generated power and the amount of sold power were measured, as history information of the amount of generated power and the amount of sold power. The date and time associated with the amount of generated power and the amount of sold power may be provided by the distribution board 30 (specifically, the generated power acquisition unit 30a and the sold power acquisition unit 30b) or may be provided by a control unit of the control device 40.

[0036] The load 50 is a device that consumes power in the facility 110, and is, for example, an electrical device used by a user of the facility 110. The load 50 may include home appliances such as lighting equipment and air conditioners, or may include a secondary battery of an electric vehicle or the like.

[0037] The router 60 is a communication relay device for allowing the distribution board 30 and the control device 40 to wirelessly communicate with each other. The distribution board 30 and the control device 40 can also be connected to the Internet 130 via the router 60. The Internet 130 is an example of a communication network. The control device 40 is connected to the mobile terminal 70 and the power company server 80 via the router 60 so as to be able to wirelessly communicate with each other.

[0038] The mobile terminal 70 is, for example, a terminal device owned by a user of the facility 110, and is, for example, but not limited to, a smartphone or a tablet terminal. The mobile terminal 70 transmits the electricity selling price input by the user to the control device 40. The electricity selling price is determined by the contents of a contract that the user has with the power company, and is a fixed amount that does not change depending on the amount of electricity or time of day.

[0039] The communication unit 41 of the control device 40 receives the electricity selling price from the mobile terminal 70 via the Internet 130 and the router 60, for example.

[0040] The electric power company server 80 is an information processing device that notifies the control device 40 of the electric power purchase price. The electric power company server 80 notifies the control device 40 of the electric power purchase price every time the electric power purchase price changes, or periodically. The electric power company server 80 is, for example, a server of an electric power company that owns the system power source 120. Periodically may be, for example, once a month, once every six months, or at other intervals.

[0041] The communication unit 41 of the control device 40 receives the electricity purchase price, for example, via the Internet 130 and the router 60. Note that the electricity purchase price may change, for example, when the contents of the contract between the facility 110 and the electric power company change (for example, when the power menu (rate menu) changes).

[0042] When the power menu is changed, the power company server 80 may notify the control device 40 of the change in the power menu. In this case, the control device 40 may acquire the power purchase price by inquiring about the power purchase price from the power company server 80.

[0043] [2. Operation of the management system] Next, the operation of the management system 100 configured as above will be described with reference to Fig. 2 to Fig. 4. Fig. 2 is a sequence diagram showing the operation (management method) of collecting various information in the management system 100 according to the present embodiment. Fig. 2 shows the operation of collecting various information for calculating the monetary effect of self-consumption of power generated by the solar power generation facility 10. Each operation of the control device 40 shown in Fig. 2 may be executed by, for example, a control unit of the control device 40.

[0044] 2, the mobile terminal 70 receives various inputs from the user for calculating the monetary effect of self-consumption of power generated by the solar power generation facility 10 (S11). The mobile terminal 70 receives, for example, inputs related to the contracted power company and plan (power menu), and inputs of the power selling price. The mobile terminal 70 has a user interface that receives user operations, and receives various inputs via the user interface. The power company and plan are information used to identify the power purchase price.

[0045] Next, the mobile terminal 70 transmits the received information on the power company, plan, and power selling price to the control device 40 (S12).

[0046] Next, the control device 40 stores the electric power company, the plan, and the electric power selling price received from the mobile terminal 70 in the storage unit 43 (S13). Note that the control device 40 may obtain at least one of the electric power company, the plan, and the electric power selling price directly from the user via a user interface of the control device 40, and store the obtained information in the storage unit 43.

[0047] Next, the control device 40 inquires of the power company server 80 about the power purchase price (S14), and the power company server 80 notifies the control device 40 of the power purchase price (S15). The control device 40 may inquire about the current power purchase price, or may inquire about the power purchase price for a predetermined past period including the current time (e.g., the period for which the effect amount is calculated). In this manner, in this embodiment, the control device 40 (e.g., the communication unit 41) automatically acquires the power purchase price from an external server such as the power company server 80. Note that automatically acquiring the power purchase price means acquiring the power purchase price without user operation.

[0048] Next, the control device 40 stores the power purchase price received from the power company server 80 in the storage unit 43 (S16). The control device 40 associates the power purchase price with information indicating the period for which the power purchase price applies, and stores the information in the storage unit 43. It can also be said that the control device 40 updates the history information of the power purchase price stored in the storage unit 43.

[0049] Next, the control device 40 inquires of the distribution board 30 about the amount of power generated by the photovoltaic power generation facility 10 (S17), and the distribution board 30 (for example, the generated power acquisition unit 30a) notifies the control device 40 of the amount of power generated (S18).

[0050] Next, the control device 40 inquires of the distribution board 30 about the amount of power sold by the photovoltaic power generation facility 10 (S19), and the distribution board 30 (for example, the power sold acquisition unit 30b) notifies the control device 40 of the amount of power sold (S20).

[0051] The amount of generated power and the amount of sold power may be periodically transmitted from the distribution board 30 to the control device 40.

[0052] Next, the control device 40 stores the amount of power sold and the amount of power generated together with time information in the storage unit 43 (S21). The time information includes information indicating the period during which the amount of power sold and the amount of power generated were measured. The time information includes information indicating the month, day, and time period during which the measurements were taken. As a result, history information on the amount of power sold and the amount of power generated is stored in the storage unit 43.

[0053] Next, the operation of calculating and presenting the effective amount using the various collected information will be described with reference to Fig. 3 and Fig. 4. Fig. 3 is a sequence diagram showing the operation (management method) of calculating and presenting the effective amount in the management system 100 according to the present embodiment. The operation shown in Fig. 3 is executed periodically, for example. For example, the report creation date and time may be the date and time for each predetermined period (for example, every month).

[0054] 3, the effect amount calculation unit 42 of the control device 40 confirms that the current date and time is the set report creation date and time (S31). The report creation date and time is set in advance by a user or the like and stored in the storage unit 43. The effect amount calculation unit 42 determines whether the current date and time (for example, today or the current time) is the report creation date and time, and if it determines that the current date and time is the report creation date and time, executes step S32, and if it determines that the current date and time is not the report creation date and time, waits until the current date and time becomes the report creation date and time.

[0055] Next, when it is confirmed that the current date and time is the set report creation date and time, the effect amount calculation unit 42 calculates the effect amount based on the amount of generated power, the amount of power sold, the power purchase price, and the power sale price (S32). The effect amount calculation unit 42 calculates the self-power consumption amount of the facility 110 in a certain unit time based on the amount of generated power and the amount of power sold in the unit time, and calculates the effect amount in the unit time based on the calculated self-power consumption amount, the power purchase price, and the power sale price in the unit time. The self-power consumption amount in the unit time is calculated, for example, by subtracting the amount of power sold in the unit time from the amount of generated power in the unit time. In addition, if the unit price obtained by subtracting the power sale price from the power purchase price is set as the difference unit price, the effect amount calculation unit 42 calculates the effect amount in the unit time by multiplying the self-power consumption amount of the facility 110 in the unit time by the difference unit price in the unit time. The unit time may be, for example, 30 minutes, 1 hour, 1 day, or any other time.

[0056] Then, the effect amount calculation unit 42 calculates the effect amount for the calculation period by adding up the effect amount for each unit time for the period to be calculated (calculation period). For example, if the calculation period is one month and the unit time is 30 minutes, the effect amount calculation unit 42 calculates the effect amount for one month by adding up the effect amount for each 30 minutes for one month.

[0057] For example, the effect monetary amount calculation unit 42 may calculate the effect monetary amount for the calculation period using the following formula 1.

[0058] Benefit amount = ∫ ((amount of generated electricity - amount of sold electricity) x (unit price of purchased electricity - unit price of sold electricity)) dt Formula 1

[0059] Next, the effect amount calculation unit 42 transmits the calculation period and the effect amount for the calculation period to the mobile terminal 70, which is an example of an external device (S33). The effect amount calculation unit 42 may transmit a report created based on the calculation period and the effect amount to the mobile terminal 70. The number of external devices is not limited to one, and may be multiple. The external device is not limited to a portable information terminal, and may be a stationary or fixed information terminal outside the management system 100.

[0060] Next, when the mobile terminal 70 receives the calculation period and the effective amount from the control device 40, it displays a push notification that the report has been created (S34), and when it accepts a report display operation from the user to display the report (S35), it displays the report including the effective amount (S36).

[0061] FIG. 4 is a diagram showing a first example of a presentation of an effective monetary amount according to the present embodiment.

[0062] As shown in Fig. 4, the mobile terminal 70 may display a monetary effect 71 and information related to solar power as a report. In Fig. 4, as shown in a dashed frame, 1000 yen is displayed as the amount saved by utilizing solar power. This 1000 yen is the monetary effect 71 for the calculation period. In addition, the solar power utilization rate, devices operated by solar power (devices that consumed generated electricity), etc. may be displayed as information related to solar power.

[0063] Displaying is an example of presenting. Presenting may be, for example, sound output. Moreover, the mobile terminal 70 is an example of a presenting unit.

[0064] In this way, by presenting the effective amount 71 that also takes into account the amount of money that would be paid if the amount of self-powered electricity were sold, the user can be encouraged to consume the generated electricity for himself / herself rather than selling it. This makes it possible to reduce the amount of electricity sold, and build an electricity supply / consumption system with less transmission loss for the region. Also, it is possible to suppress power instability (e.g., frequency deviation, high voltage, etc.) of the grid power source 120 that occurs when electricity is sold to the grid power source 120. Also, such an effective amount 71 is considered to be a more accurate effective amount than the effective amount calculated by a conventional calculation method that does not take into account the amount of electricity sold.

[0065] The report displayed by the mobile terminal 70 is not limited to the example shown in FIG. 4. Another example of the report displayed by the mobile terminal 70 will be described with further reference to FIG. 5. FIG. 5 is a diagram showing a second example of the presentation of the effect amount according to the present embodiment. FIG. 5 shows a report that is displayed when the effect amount 71 achieves the target amount. It is assumed that the target amount of the effect amount 71 is set in advance. The target amount is an example of a predetermined amount, and may be input by the user or may be automatically set based on the past effect amount 71, etc. It is to be noted that the predetermined amount is not limited to the target amount, and may be another amount.

[0066] For example, the mobile terminal 70 may determine whether the effective amount 71 is equal to or greater than the target amount, and if the effective amount 71 is equal to or greater than the target amount, display the report shown in Fig. 5, and if the effective amount 71 is less than the target amount, display the report shown in Fig. 4. In this way, the mobile terminal 70 may present the effective amount 71 in different ways when the effective amount 71 is equal to or greater than the target amount and when the effective amount 71 is less than the target amount. Different ways include different display contents, different display modes (for example, character color, background, whether or not to blink, whether or not to sound, etc.), and the like.

[0067] As shown in FIG. 5, when the effect amount 71 is equal to or greater than the target amount, the mobile terminal 70 may display information indicating that the target amount has been achieved (in the example of FIG. 5, "☆Congratulations! Goal achieved!!☆"). The mobile terminal 70 may additionally display information indicating that the target amount has been achieved in the report shown in FIG. 4. The information indicating that the target amount has been achieved may be information that highlights that the target amount has been achieved. Furthermore, the mobile terminal 70 may display the target amount by including it in the report.

[0068] In this way, the mobile terminal 70 may display information for encouraging the user to consume at home in a report.

[0069] The mobile terminal 70 may display differently when the effect amount 71 is equal to or greater than the target amount and when the effect amount 71 is less than the target amount. The mobile terminal 70 may display differently at least one of the color of the characters, the background, whether or not to blink, and whether or not to play a sound when the effect amount 71 is equal to or greater than the target amount and when the effect amount 71 is less than the target amount.

[0070] In addition, when the effective amount 71 is less than a specified amount, the mobile terminal 70 may display at least one of information indicating the difference between the effective amount 71 and the specified amount, information indicating the degree to which the effective amount 71 has been achieved, and information encouraging the achievement of the target amount.

[0071] The mobile terminal 70 may display the report using three or more display modes. For example, the mobile terminal 70 may display the report in different modes depending on whether the effective amount 71 is equal to or greater than the target amount, whether the effective amount 71 is equal to or greater than the target amount and less than the target amount, or whether the effective amount 71 is less than the target amount.

[0072] Note that the determination of whether the effect amount 71 is equal to or greater than the target amount, the generation of the report shown in FIG.

[0073] (Modification of the embodiment) The management system according to this modification will be described below with reference to Fig. 6. The following description will focus on the differences from the embodiment, and descriptions of the same or similar contents as the embodiment will be omitted or simplified. Fig. 6 is a block diagram showing the functional configuration of the management system 100 according to this modification.

[0074] As shown in Fig. 6, the management system 100 according to this modification includes a distribution board 230 instead of the distribution board 30 shown in the embodiment. Note that the configuration other than the distribution board 230 may be the same as that of the embodiment, and in Fig. 6, the configuration other than the distribution board 230 is illustrated with the reference numerals of the embodiment, and the description is omitted or simplified. In this modification, the facility 110 is provided with a power storage facility that stores the power generated by the solar power generation facility 10, but this is not illustrated.

[0075] The distribution board 230 includes a total power consumption acquisition unit 230a and a purchased power acquisition unit 230b.

[0076] The total power consumption acquiring unit 230a acquires the total amount of power consumed in the facility 110. The total power consumption acquiring unit 230a includes, for example, a power measuring element, and acquires the total amount of power consumed in the facility 110 by the power measuring element measuring the amount of power actually supplied to the load 50.

[0077] The purchased power acquisition unit 230b acquires the amount of purchased power supplied (purchased) from the system power supply 120. The purchased power acquisition unit 230b includes, for example, a power measurement element, and acquires the amount of purchased power by the power measurement element measuring the amount of purchased power.

[0078] The power measurement elements included in the total power consumption acquisition unit 230a and the purchased power acquisition unit 230b are specifically CTs, but may also be Rogowski circuits or GMR elements. By providing the power measurement elements, the distribution board 230 can measure the total power consumption and the amount of purchased and sold power. The total power consumption and the amount of purchased and sold power may be, for example, a 30-minute integrated value or a 1-hour integrated value.

[0079] The distribution board 230 also has a wireless communication module for wireless communication, and is capable of wireless communication with the control device 40 via the router 60. In other words, the wireless communication module is a wireless communication circuit. This allows the distribution board 230 to transmit the total power consumption acquired by the total power consumption acquisition unit 230a and the amount of purchased power acquired by the purchased power acquisition unit 230b to the control device 40. The total power consumption and the amount of purchased power are stored in the storage unit 43 included in the control device 40 as history information on the total power consumption and the amount of purchased power.

[0080] In this modification, the effect amount calculation unit 42 calculates the effect amount using the self-power consumption calculated based on the total power consumption and the purchased power amount. Specifically, the effect amount calculation unit 42 calculates the self-power consumption of the facility 110 in a unit time based on the total power consumption in the unit time and the purchased power amount in the unit time, and calculates the effect amount in the unit time based on the calculated self-power consumption and the purchased power unit price and the selling power unit price in the unit time. The self-power consumption in the unit time is calculated, for example, by subtracting the purchased power amount in the unit time from the self-power consumption in the unit time. For example, the effect amount calculation unit 42 may calculate the effect amount for the calculation period using the following formula 2.

[0081] Benefit amount = ∫ ((total power consumption - purchased power amount) x (power purchase price - power selling price)) dt Equation 2

[0082] In the above embodiment, the amount of personal power consumption is calculated based on a power generation standard (based on the time of power generation), but in this modified example, the amount of personal power consumption is calculated based on a usage standard (based on the time of actual consumption). That is, in the above embodiment, the amount of personal power consumption is calculated assuming that power is consumed when it is generated, but in this modified example, the amount of personal power consumption is calculated assuming that the generated power is consumed when the user actually uses the generated power. In this modified example, the power generated by the solar power generation facility 10 and stored in the power storage facility is not measured as the amount of personal power consumption.

[0083] This allows the control device 40 to calculate the amount of private power consumption based on the time point when the generated power is actually consumed, that is, the amount of private power consumption according to the timing of power consumption by the user.

[0084] In this modification, the report may include a line graph showing time series data of the user's power usage and the monetary effect. For example, the vertical axis of the line graph shows the amount of power and the monetary effect, and the horizontal axis shows time, but is not limited to this. The line graph may include at least the time series data of the monetary effect.

[0085] (Effects, etc.) The invention derived from the disclosure of this specification and the effects and the like obtained by the invention will be described below.

[0086] (Invention 1) The management system 100 is a management system for managing consumers who have solar power generation equipment installed, and includes a unit price acquisition unit that acquires a power purchase price and a power sale price, and a calculation unit that calculates the monetary effect of self-consumption of at least a portion of the generated power based on the amount of self-consumption consumed by the consumer from the amount of power generated by the solar power generation equipment, the power purchase price, and the power sale price.

[0087] As a result, the monetary effect is calculated using the electricity selling price in addition to the amount of self-consumption and the electricity purchase price, so it is possible to calculate the monetary effect of self-consumption taking into account the electricity selling price if the electricity is sold. Therefore, the management system 100 makes it possible to calculate the monetary effect of self-consumption of the electricity generated by the solar power generation facility 10.

[0088] In addition, by showing the monetary benefits of self-consumption, users can be encouraged to self-consume the generated electricity. From a local perspective, this reduces the loss of electricity generated by the solar power generation equipment in each residence when it is transmitted through external electric wires, and also reduces the occurrence of problems caused by phase shifts in the transmitted electricity when the generated electricity is transmitted through external electric wires.

[0089] (Invention 2) The calculation unit is the management system 100 of invention 1, which calculates the monetary benefit by multiplying the amount of self-power consumption by a difference in unit price obtained by subtracting the unit price of selling electricity from the unit price of purchasing electricity.

[0090] This makes it possible to calculate the difference between the amount of money for selling the electricity and the amount of money for benefit from self-consumption as the amount of money for benefit in the facility 110. In other words, it is possible to calculate a more accurate amount of money for benefit.

[0091] (Invention 3) The management system 100 of the first or second aspect of the present invention further comprises a communication unit that transmits the effect amount to an external device.

[0092] This makes it possible to check the effective amount using an external device, thereby improving the convenience of the management system 100.

[0093] (Invention 4) The management system 100 according to any one of Inventions 1 to 3 further comprises a storage unit that stores the electricity purchase price and the electricity sale price acquired by the unit price acquisition unit.

[0094] As a result, since not only the electricity purchase price but also the electricity selling price are stored in the memory unit 43, the effective amount can be calculated using the electricity selling price, making it possible to easily calculate a more accurate effective amount.

[0095] (Invention 5) The management system 100 of any of Inventions 1 to 4 further includes a power sale acquisition unit that acquires the amount of power sale supplied to a power grid, and a generated power acquisition unit that acquires the amount of generated power, and the amount of self-power consumption is calculated based on the amount of power sale and the amount of generated power.

[0096] In this way, by acquiring the amount of power sold and the amount of power generated, the amount of power consumed by the home can be automatically calculated. For example, since the user does not need to input the amount of power consumed by the home, the convenience of the management system 100 is improved.

[0097] (Invention 6) The management system 100 according to any one of Inventions 1 to 5 further comprises a presentation unit that presents the effective amount.

[0098] This allows the effective amount to be presented to the user.

[0099] (Invention 7) The presentation unit is the management system 100 of invention 6, which presents the effect amount in different forms depending on whether the effect amount is equal to or greater than a predetermined amount or less than the predetermined amount.

[0100] This makes it possible to further encourage self-consumption by the user by changing the manner in which the information is presented when a predetermined amount, such as a target amount, is reached.

[0101] (Invention 8) The calculation unit is the management system 100 of any one of Inventions 1 to 7, which periodically calculates the effective amount.

[0102] This allows the user to be periodically presented with the monetary benefit, further encouraging the user to consume the generated electricity for their own home consumption.

[0103] (Invention 9) The unit price acquisition unit is the management system 100 of any one of the first to eighth aspects of the present invention, which acquires the electricity purchase unit price from an external server.

[0104] As a result, the electricity purchase price is obtained from an external server, so users (e.g., residents) no longer need to worry about fluctuations in the electricity purchase price (e.g., they no longer need to input the electricity purchase price), improving the convenience of the management system 100.

[0105] (Invention 10) The management system 100 of any of Inventions 1 to 9 further includes a total power consumption acquisition unit that acquires the total amount of power consumption consumed by the consumer, and a purchased power acquisition unit that acquires the amount of purchased power supplied from a grid power source, and the amount of self-power consumption is calculated based on the total amount of power consumption and the amount of purchased power.

[0106] In this way, the amount of private power consumption is calculated based on the total amount of power consumption and the amount of purchased power, so that the management system 100 including the power storage facility can calculate the monetary effect of private power consumption based on the time of consumption. Therefore, it is possible to calculate the monetary effect based on the history of the user's power usage (based on the user's image of power usage).

[0107] (Invention 11) This is a management method for managing a consumer that has installed solar power generation equipment, which acquires a power purchase price and a power sale price, and calculates the monetary benefit of self-consuming at least a portion of the generated power based on the amount of self-consumption consumed by the consumer from the amount of power generated by the solar power generation equipment, the power purchase price, and the power sale price.

[0108] This provides the same effects as those of the management system 100 described above.

[0109] (Invention 12) A program for causing a computer to execute the management method of Invention 11.

[0110] This provides the same effects as those of the management system 100 described above.

[0111] These general or specific aspects may be realized by a system, a method, an integrated circuit, a computer program, or a non-transitory recording medium such as a computer-readable CD-ROM, or may be realized by any combination of the system, the method, the integrated circuit, the computer program, or the recording medium. The program may be stored in the recording medium in advance, or may be supplied to the recording medium via a wide area communication network including the Internet.

[0112] (Other embodiments) The management system 100 according to one or more aspects has been described above based on the embodiment and modified examples (hereinafter, the embodiment, etc.), but the present invention is not limited to the embodiment, etc. As long as it does not deviate from the spirit of the present invention, various modifications conceived by a person skilled in the art to the present embodiment and forms constructed by combining components in different embodiments may also be included in the present invention.

[0113] For example, in the above embodiment and the like, an example has been described in which the effect amount calculation unit 42 calculates the amount of personal power consumption based on the amount of power generated and the amount of power sold, but the present invention is not limited to this, and the control device 40 may obtain the amount of personal power consumption from a user interface or a mobile terminal 70. In other words, the effect amount calculation unit 42 does not have to calculate the amount of personal power consumption.

[0114] Also, for example, in the above embodiment, an example was described in which the effective amount is calculated when the report creation date and time arrives (S31 and S32 shown in Figure 3), but this is not limited to this, and the effective amount may be calculated for any period entered by the user into the mobile terminal 70.

[0115] Also, for example, in the above embodiment, when the control device 40 has a display unit and presents the effect amount on the display unit, step S33 shown in Fig. 3 does not need to be executed. In this case, the control device 40 may display the effect amount when it accepts a report display operation via the user interface.

[0116] In addition, for example, in Figure 3 shown in the above embodiment, an example is described in which the effective amount is displayed when an operation to display the effective amount is obtained from the user, but this is not limited to this, and the effective amount may be displayed regardless of whether or not a user operation is performed.

[0117] Also, for example, the communication unit 41 according to the above-mentioned embodiment may acquire the amount of generated power and the amount of sold power from a power meter or the like via communication. That is, the communication unit 41 may function as a generated power acquisition unit and a sold power acquisition unit. Also, for example, the communication unit 41 may acquire the total amount of power consumed and the amount of purchased power from a power meter or the like via communication. That is, the communication unit 41 may function as a total power consumption acquisition unit and a purchased power acquisition unit.

[0118] In the above embodiments, each component may be implemented by dedicated hardware or by executing a software program suitable for each component. Each component may be implemented 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.

[0119] The order in which the steps are executed in the flowchart is merely an example for specifically explaining the present invention, and an order other than the above may be used. Some of the steps may be executed simultaneously (in parallel) with other steps, or some of the steps may not be executed.

[0120] In addition, the division of functional blocks in the block diagram is an example, and multiple functional blocks may be realized as one functional block, one functional block may be divided into multiple blocks, or some functions may be transferred to another functional block. Furthermore, the functions of multiple functional blocks having similar functions may be processed in parallel or in a time-sharing manner by a single piece of hardware or software.

[0121] Furthermore, the control device according to the above-mentioned embodiments and the like may be realized as a single device, or may be realized by multiple devices. When the control device is realized by multiple devices, the components of the control device may be distributed in any manner among the multiple devices. When the control device is realized by multiple devices, the communication method between the multiple devices is not particularly limited, and may be wireless communication or wired communication. Furthermore, wireless communication and wired communication may be combined between the devices.

[0122] Moreover, each of the components described in the above embodiments may be realized as software, or may be realized as an LSI, which is typically an integrated circuit. These may be individually integrated into one chip, or may be integrated into one chip to include some or all of them. Here, LSI is used, but it may be called IC, system LSI, super LSI, or ultra LSI depending on the degree of integration. Furthermore, the method of integration is not limited to LSI, and may be realized by a dedicated circuit (a general-purpose circuit that executes a dedicated program) or a general-purpose processor. After LSI manufacture, a programmable FPGA (Field Programmable Gate Array) or a reconfigurable processor that can reconfigure the connection or settings of circuit cells inside the LSI may be used. Furthermore, if an integrated circuit technology that replaces LSI appears due to the progress of semiconductor technology or a different derived technology, it is natural that the components may be integrated using that technology.

[0123] A system LSI is an ultra-multifunctional LSI manufactured by integrating multiple processing units on a single chip, and specifically, is a computer system that includes a microprocessor, a ROM (Read Only Memory), a RAM (Random Access Memory), etc. Computer programs are stored in the ROM. The system LSI achieves its functions by the microprocessor operating in accordance with the computer program.

[0124] 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 management method shown in either FIG. 2 or FIG.

[0125] Furthermore, for example, the program may be a program to be executed by a computer. Furthermore, one 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 making it possible to cause the device to perform each of the above processes. [Explanation of symbols]

[0126] 10. Solar power generation facilities 30a Power generation acquisition section 30b Electricity sales acquisition unit 41 Communications Department (Unit Price Acquisition Department) 42 Effectiveness Monetary Calculation Department (Calculation Department) 43 Storage section 70 Mobile terminal (display unit) 71 Benefit amount 100 Management Systems 110 Facilities 120 Grid power supply 230a Total power consumption acquisition part 230b Power Purchase and Acquisition Department

Claims

1. A management system for managing a consumer in which a solar power generation facility is installed, A unit price acquisition unit that acquires the power purchase price and the power selling price; A calculation unit that calculates an amount of benefit resulting from the self-consumption of at least a portion of the generated power amount based on the amount of self-consumption consumed by the consumer out of the amount of generated power by the solar power generation facility, the power purchase price, and the power sale price, The calculation unit calculates the benefit amount by multiplying the amount of self-power consumption by a difference in unit price obtained by subtracting the unit price of selling electricity from the unit price of purchasing electricity. Management system.

2. Further, a communication unit for transmitting the effect amount to an external device is provided. The management system according to claim 1 .

3. The power purchase price and the power selling price acquired by the unit price acquisition unit are further provided. The management system according to claim 1 or 2.

4. moreover, a power sale acquisition unit that acquires an amount of power sale supplied to the grid power supply; a generated power acquisition unit that acquires the generated power amount, The amount of self-power consumption is calculated based on the amount of power sold and the amount of power generated. The management system according to claim 1 or 2.

5. Further, a presentation unit that presents the benefit amount is provided. The management system according to claim 1 or 2.

6. The presentation unit presents the effect amount in a different manner depending on whether the effect amount is equal to or greater than a predetermined amount or less than a predetermined amount. The management system according to claim 5.

7. The calculation unit periodically calculates the effective amount. The management system according to claim 1 or 2.

8. The unit price acquisition unit acquires the power purchase price from an external server. The management system according to claim 1 or 2.

9. Further, a total power consumption acquisition unit that acquires a total amount of power consumption consumed by the consumer; A purchased power acquisition unit that acquires an amount of purchased power supplied from a power grid, The self-power consumption amount is calculated based on the total power consumption amount and the purchased power amount. The management system according to claim 1 or 2.

10. A management method executed by a management system that manages a consumer in which a solar power generation facility is installed, Obtain the electricity purchase price and the electricity selling price, Calculating the amount of benefit resulting from the self-consumption of at least a portion of the generated power amount based on the amount of self-consumption consumed by the consumer out of the amount of generated power by the solar power generation facility, the power purchase price, and the power sale price; In calculating the amount of the benefit, the amount of the benefit is calculated by multiplying the amount of the self-power consumption by the difference in unit price obtained by subtracting the unit price of the electricity sold from the unit price of the electricity purchased. Management method.

11. A program for causing a computer to execute the management method according to claim 10.

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