Charging planning support method, charging planning support device, charging planning method, power-generation planning support method, and power-generation planning support device

Abstract

A charging planning support method for a charging station (200) for an electric mobile body (600) capable of receiving power from a distributed power-supply system (100) including a natural-energy power generation device (110) and a power storage device (120), said charging planning support method including: a step for receiving data (DJUD) capable of specifying a time period during which there is power that can be received by the charging station and the magnitude of said power; and a step for supporting a change in the charging planning of the charging station (200) in consideration of the received data (DJUD).

Description

Charging plan support method, charging plan support device, charging plan method, power generation plan support method, and power generation plan support device

[0001] The present disclosure relates to a method for supporting a charging plan, a device for supporting a charging plan, a charging planning method, a method for supporting a power generation plan, and a device for supporting a power generation plan.

[0002] Patent Literature 1 describes a technology for charging an electric vehicle. Specifically, in this technology, electricity is generated using renewable energy at a private power generation facility. The electricity generated by the private power generation facility is supplied to the electric vehicle.

[0003] JP 2013-158100 A

[0004] The present disclosure provides a technology suitable for effectively utilizing natural energy by linking a distributed power supply system and a charging station.

[0005] The present disclosure provides a method for supporting a charging plan at a charging station for an electric vehicle capable of receiving power from a distributed power supply system including a natural energy power generation device and a power storage device, the method comprising the steps of: receiving data that can identify a time period when power is available for the charging station and the amount of that power; and supporting a change in the charging plan for the charging station, taking into account the received data.

[0006] The technology disclosed herein is suitable for effectively utilizing natural energy by linking a distributed power supply system and a charging station.

[0007] FIG. 1 is a system configuration diagram of a coordination system according to an embodiment. FIG. 2 is an explanatory diagram of a charging station according to an embodiment. FIG. 3 is an explanatory diagram of a collaboration promotion device according to an embodiment. FIG. 4 is a functional block diagram related to the transmission of information and power in a coordination system according to an embodiment. FIG. 5 is a flowchart for explaining the operation of the coordination system. FIG. 6 is an explanatory diagram showing the relationship between power generation reserve and received power according to an example. FIG. 7 is an explanatory diagram for deriving interchange power. FIG. 8 is an explanatory diagram for explaining changes in interchange power over time. FIG. 9 is an explanatory diagram for changing a power generation plan according to a first example.

[0008] (Findings and the like that form the basis of the present disclosure) Consider a distributed power system that includes a renewable energy power generation device and a power storage device. Excess power generated by the renewable energy power generation device that is not consumed can be stored in the power storage device or can be reverse-flowed to the power grid.

[0009] However, the amount of electricity that can be stored in a power storage device is limited. When the power generated by a renewable energy power generation device increases due to natural conditions, a situation may arise in which the power storage device alone is unable to store the excess power. This situation may occur, for example, when the renewable energy power generation device is a solar power generation device and the weather is fine.

[0010] Furthermore, restrictions may be imposed on the reverse power flow from the distributed power system to the power grid due to the circumstances of the power grid, etc. This restriction may be imposed, for example, when the renewable energy power generation device is a solar power generation device, the weather is fine, and there is excess power on the power grid side.

[0011] For these reasons, situations may arise where it is difficult to effectively utilize the electricity generated by natural energy power generation equipment. Therefore, the inventors have investigated ways to make such situations less likely to occur by linking charging stations to distributed power generation systems.

[0012] In the system studied by the inventors, the power from the distributed power supply system can be used to charge electrically powered vehicles such as electric vehicles via charging stations. In this way, linking the distributed power supply system with charging stations makes it possible to effectively utilize natural energy.

[0013] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. The present disclosure is not limited to the following embodiments.

[0014] (Embodiment) Hereinafter, an embodiment will be described with reference to Figs.

[0015] [System Configuration] <System Overview> FIG. 1 is a system configuration diagram of a linkage system 400 according to an embodiment.

[0016] The collaboration system 400 includes a distributed power supply system 100, a charging station 200, and a collaboration promotion device 300. The distributed power supply system 100 is connected to the charging station 200.

[0017] The distributed power system 100 can be interconnected with a commercial power source 500 of a power grid 550. Specifically, power can flow back from the distributed power system 100 to the power grid 550 via an electrical path 405. Power can flow from the commercial power source 500 to the distributed power system 100 via the electrical path 405.

[0018] Power can flow from the distributed power system 100 to the charging station 200 via the electrical path 405. Power can flow from the commercial power source 500 to the charging station 200 via the electrical path 405. One or more electric vehicles 600 can be charged by the charging station 200.

[0019] In the embodiment, the interconnection system 400 is a “closed area” system in which power transmission within the interconnection system 400 can be performed without going through the power grid 550. For example, power can be supplied from the distributed power system 100 to the charging station 200 without going through the power grid 550.

[0020] The distributed power supply system 100 is connected to a load 435. In the embodiment, the load 435 is a load provided in a power consumer. The power consumer receives power supply from the distributed power supply system 100. The power consumer is, for example, a factory. The load 435 includes at least one consumer device. The consumer device is, for example, a motor, an air conditioner, etc.

[0021] The cooperation promoting device 300 supports cooperation between the distributed power supply system 100 and the charging station 200. This can promote cooperation between the distributed power supply system 100 and the charging station 200.

[0022] <Electric Vehicle 600> In the embodiment, the electric vehicle 600 is an electric vehicle. The electric vehicle may be a four-wheeled vehicle or a two-wheeled vehicle. The electric vehicle may be a private vehicle or a commercial vehicle.

[0023] The electric vehicle 600 includes a power storage device 650. In this embodiment, the power storage device 650 is a storage battery. Specifically, the power storage device 650 is a lithium ion secondary battery.

[0024] <Distributed power supply system 100> The distributed power supply system 100 includes a natural energy power generation device 110, a power storage device 120, a communication device 150, and a controller 160. The natural energy power generation device 110 and the power storage device 120 are connected to each other. The controller 160 controls the natural energy power generation device 110 and the power storage device 120 using the communication device 150. In the embodiment, the distributed power supply system 100 may also be referred to as a power generation and storage linked system.

[0025] The natural energy power generation device 110 generates power by utilizing natural energy. The power generated by the natural energy power generation device 110 can fluctuate depending on natural conditions such as weather.

[0026] In the embodiment, the natural energy power generation device 110 includes a plurality of power generators. The natural energy power generation device 110 is a solar power generation device. The power generators are solar panels.

[0027] The power storage device 120 can charge and discharge power. Specifically, the power storage device 120 can be charged with power generated by the natural energy power generation device 110. The power storage device 120 can also be charged with power supplied from the commercial power source 500.

[0028] In the embodiment, the power storage device 120 is a storage battery. Specifically, the power storage device 120 is a lithium ion secondary battery.

[0029] Electric power can flow from the natural energy power generation device 110, the power storage device 120, and / or the commercial power supply 500 to the load 435. The load 435 consumes electric power.

[0030] The controller 160 controls the power generated by the natural energy power generation device 110. The controller 160 controls the charging and discharging power of the power storage device 120. In the embodiment, the controller 160 is a power conditioner.

[0031] Here, charging and discharging refers to charging or discharging. Charging and discharging power refers to charging power or discharging power. Positive charging and discharging power refers to charging power, and negative absolute values ​​of charging and discharging power refer to discharging power. Charging power of the power storage device 120 refers to power charged to the power storage device 120. Discharging power of the power storage device 120 refers to power discharged by the power storage device 120.

[0032] In the embodiment, the controller 160 creates a power generation / storage plan p0. The controller 160 controls the power generated by the natural energy power generation device 110 and the power charged / discharged by the power storage device 120 in accordance with the power generation / storage plan p0.

[0033] Specifically, the energy generation and storage plan p0 includes an energy generation plan and an energy storage plan p2. The controller 160 creates the energy generation plan and the energy storage plan p2.

[0034] The power generation plan includes a plan for time-dependent changes in the power generated by the natural energy power generation device 110. The controller 160 controls the power generated by the natural energy power generation device 110 in accordance with the power generation plan. The power generation plan can be created based on predicted natural conditions. Specifically, the power generation plan can be created based on a weather forecast.

[0035] In the embodiment, the controller 160 can execute maximum output control and output suppression control of the natural energy power generation device 110. The power generation plan may include a plan to cause the natural energy power generation device 110 to execute maximum output control. The power generation plan may include a plan to cause the natural energy power generation device 110 to execute output suppression control.

[0036] The maximum output control of the natural energy power generation device 110 is control for extracting the maximum amount of power generated from the natural energy power generation device 110 by making the natural energy power generation device 110 maximize its power generation capacity. In other words, the maximum output control of the natural energy power generation device 110 is control for making the natural energy power generation device 110 generate power at the maximum power that it can output. The output reduction control is control for reducing the power generated by the natural energy power generation device 110 below the power generated during maximum output control. In other words, the output reduction control is control for making the natural energy power generation device 110 generate power at a level that is lower than the maximum power that it can output. Here, reducing the power generation includes reducing the power generation to zero.

[0037] The output suppression control is a control for suppressing a portion of the power generated by the natural energy power generation device 110 from flowing backward to the power grid 550. Regarding the backward flow, there are cases where a limit value is set for the backward flow after going through additional procedures on the power grid 550 side, such as concluding a contract separate from the power purchase contract, or where additional costs are to be paid as a penalty, and therefore it is sometimes desirable to suppress the backward flow power to a sufficiently small value.

[0038] Examples of maximum output control and output suppression control will be described below.

[0039] In one example of maximum output control, the controller 160 executes maximum power point tracking (MPPT) control of the natural energy power generation device 110 while maintaining a state in which all of the multiple generators in the natural energy power generation device 110 are connected to the electric circuit 405. This allows the natural energy power generation device 110 to extract the maximum amount of generated power.

[0040] Here, the MPPT control of the natural energy power generation device 110 is control that adjusts the operating point of the natural energy power generation device 110 to the maximum power point. The operating point refers to the combination of current, voltage, and power generated by power generation. The maximum power point is the operating point when the generated power is maximum. The adjustment of the operating point is performed, for example, by adjusting the output voltage. The adjustment of the output voltage is performed, for example, via a DC-DC converter (not shown).

[0041] The output suppression control can be achieved, for example, by disconnecting one or all of the multiple generators in the natural energy power generation device 110 from the electric circuit 405, by shifting the operating point of the natural energy power generation device 110 from the maximum power point, or the like.

[0042] The power storage plan p2 includes a plan for temporal changes in the charge and discharge power of the power storage device 120. The controller 160 controls the charge and discharge power of the power storage device 120 in accordance with the power storage plan p2.

[0043] The controller 160 has a load power prediction p3. The load power prediction p3 represents a prediction of a change over time in the power demand of the load 435. For example, the load power prediction p3 is generated by the controller 160 based on a change over time in the past power demand of the load 435. Also, for example, the load power prediction p3 is input by a user of the linkage system 400 via a user interface (not shown).

[0044] In one example, the controller 160 creates a reverse power flow plan p4. The reverse power flow plan p4 includes a plan for how the power flowed back from the distributed power system 100 to the power grid 550 changes over time.

[0045] <Charging Station 200> Charging station 200 includes a charging device 210, a communicator 250, and a controller 260. Controller 260 controls charging device 210 using communicator 250. In the embodiment, charging device 210 includes a plurality of chargers 215. Charger 215 is a charging stand.

[0046] The charging station 200 is connected to one or more electric vehicles 600 and supplies power to the one or more electric vehicles 600. This charges the one or more electric vehicles 600. In this context, specifically, the power supply source is a "charging device 210" provided in the "charging station 200." The power supply destination is a "power storage device 650" provided in the "electric vehicle 600."

[0047] FIG. 2 is an explanatory diagram of a charging station 200 according to an embodiment.

[0048] In the embodiment, charging station 200 is provided in a parking lot 270. Here, parking is a concept that includes bicycle parking. A plurality of parking spaces 280 are provided in parking lot 270. Charging device 210 includes at least one charger 215, and in the example shown in FIG. 2 , includes a plurality of chargers 215. Furthermore, at least one of the plurality of parking spaces 280 is provided with a charger 215, and in the example shown in FIG. 2 , a charger 215 is provided in each parking space.

[0049] An electric vehicle serving as the electric vehicle 600 can be parked in each parking space 280. The electric vehicle parked in the parking space 280 can be charged by a charger 215 provided in that parking space 280.

[0050] Specifically, in the embodiment, a company owns a plurality of electric vehicles as a plurality of electric vehicles 600. A load 435 and a parking lot 270 are provided on the company's premises. The electric vehicles are commercial vehicles such as company cars. An electric vehicle carrying a company employee returns to the company from an outside location and is parked in a parking space 280. While the electric vehicle is parked, it is charged. After charging, the electric vehicle becomes operable again.

[0051] The charging plan qx includes a plan of time-dependent changes in charging power supplied from the charging station 200 to one or more electric vehicles 600. The controller 260 controls the charging power supplied from the charging station 200 to one or more electric vehicles 600 in accordance with the charging plan qx. In this context, "from the charging station 200" specifically means "from the charging device 210."

[0052] In the embodiment, the controller 260 performs peak control (hereinafter, P / C), which defines an upper limit of the power (hereinafter, P / C power) that the charging station 200 outputs to charge one or more electric vehicles 600.

[0053] The P / C makes it possible to manage the power consumption of the entire charging station 200. This is advantageous from the viewpoint of stabilizing the power consumption of the charging station 200. For example, even if multiple electric vehicles 600 start charging at the same time, the power consumption of the entire charging station 200 can be kept constant, and fluctuations in power consumption can be reduced.

[0054] In the embodiment, a power purchase contract is concluded between the owner of commercial power source 500 and the manager of charging station 200. The power purchase contract sets an upper limit on the amount of power to be purchased from commercial power source 500 (hereinafter referred to as power purchase contract power). The P / C power can be set, for example, according to the power purchase contract power. Typically, the P / C power is equal to or less than the power purchase contract power. Note that when the manager of a factory concludes a power purchase contract for the total of the power demand of the factory and the power demand of charging station 200, or for each of the power demand of the factory and the power demand of charging station 200, the manager of the factory is also the manager of charging station 200.

[0055] In the embodiment, the controller 260 can change the P / C power. For example, when power is transferred from the distributed power system 100 to the charging station 200, the controller 260 increases the P / C power. The transfer of power will be described later.

[0056] As described above, the charging power related to the power storage device 120, the power storage plan p2, etc. in the distributed power supply system 100 is the power charged to the power storage device 120. In contrast, the charging power related to the charging station 200, the charging device 210, the charger 215, the charging plan qx, etc. is the power supplied to one or more electric vehicles 600 from the charging station 200, the charging device 210, the charger 215, etc.

[0057] <Cooperation Promotion Device 300> The collaboration promotion device 300 includes a communicator 350 and a controller 360. The controller 360 uses the communicator 350 to generate information for supporting cooperation between the distributed power supply system 100 and the charging station 200. In the embodiment, the collaboration promotion device 300 may also be referred to as a closed-area power supply collaboration promotion device. The controller 360 may also be referred to as a collaboration promotion unit.

[0058] Fig. 3 is an explanatory diagram of a collaboration promotion device 300 according to an embodiment. Fig. 3 illustrates only a controller and a communicator, and does not illustrate other elements.

[0059] In the embodiment, the collaboration promotion device 300 is implemented on a server. The collaboration promotion device 300 communicates with the distributed power supply system 100 and the charging station 200 via a network 700. Specifically, the communicator 350 communicates with the communicator 150 and the communicator 250 via the network 700. The network 700 is, for example, the Internet.

[0060] [Transmission of Information and Power] FIG. 4 is a functional block diagram relating to the transmission of information and power in the linkage system 400 according to the embodiment.

[0061] 4, the network 700 is omitted from the illustration. The natural energy power generation device 110 and the power storage device 120 are shown together. The communication device 150 and the controller 160 are shown together. The communication device 250 and the controller 260 are shown together.

[0062] FIG. 5 is a flowchart illustrating the operation of the collaboration system 400. In an embodiment, the process according to the flowchart in FIG. 5 is executed on demand. In one example, a predetermined mechanism monitors the operation of the distributed power system 100 and / or the charging station 200. When the predetermined mechanism detects a change in the operation, it determines whether it is necessary to update the energy generation and storage plan p0 of the distributed power system 100 and / or the charging plan qx of the charging station 200. When it determines that there is a need, the predetermined mechanism executes the flowchart shown in FIG. 5. In this way, it is possible to employ a configuration in which the predetermined mechanism cooperates on demand with the control according to the flowchart shown in FIG. 5. The predetermined mechanism may be incorporated in the collaboration promotion device 300, or may cooperate with the collaboration promotion device 300.

[0063] 5, steps C1 to C6 are operations of the collaboration promoting device 300. Steps A1 to A4 are operations of the distributed power supply system 100. Steps B1 to B4 are operations of the charging station 200. The step numbers in FIG. 5 are also shown in FIG. 4.

[0064] In step A1, the communicator 150 transmits data D JUD In step C1, the communication device 350 transmits the data D JUD Receive data D JUD is an example of data that can identify a time period when there is power available for the charging station 200 of the present disclosure and the amount of that power. JUD includes a power reception request px. The power reception request px is a request from the distributed power system 100 that the charging station 200 receive power from the distributed power system 100.

[0065] In step B1, the communicator 250 transmits the data D EVS In step C2, the communication device 350 transmits the data D EVS Receive data D EVSis an example of data that can identify the time period during which power can be received from the distributed power supply system 100 of the present disclosure and the amount of power that can be received. EVS includes the charging plan qx.

[0066] After steps C1 and C2, in step C3, the controller 360 JUD and Data D EVS In the embodiment, in step C3, the controller 360 generates the collaborative plan r1 based on the power reception request px and the charging plan qx.

[0067] After step C3, in step C4, the controller 360 generates energy generation / storage plan change information j0 and charging plan change information k0 based on the collaborative plan r1.

[0068] After step C4, in step C5, the communication device 350 transmits the energy generation / storage plan change information j0 to the communication device 150. As a result, in step A2, the communication device 150 receives the energy generation / storage plan change information j0 from the communication device 350.

[0069] After step A2, in step A3, the controller 160 changes the energy generation / storage plan p0 based on the energy generation / storage plan change information j0.

[0070] After step A3, in step A4, the controller 160 causes the natural energy power generation device 110 to generate power and causes the power storage device 120 to charge and discharge, based on the power generation and storage plan p0.

[0071] After step C4, in step C6, the communicator 350 transmits the charging plan change information k0 to the communicator 250. As a result, in step B2, the communicator 250 receives the charging plan change information k0 from the communicator 350.

[0072] After step B2, in step B3, the controller 260 changes the charging plan qx based on the charging plan change information k0.

[0073] After step B3, in step B4, the controller 260 supplies power from the charging device 210 to one or more electric vehicles 600 in accordance with the charging plan qx.

[0074] The completion of steps A4 and B4 marks the end of the current processing of the flowchart in Fig. 5. Thereafter, the next processing of the flowchart in Fig. 5 can be executed on demand.

[0075] Each step will be described in detail below.

[0076] <Step A1 and Step C1> As described above, data D JUD is data that can identify the time period when the charging station 200 can receive power and the amount of that power. JUD includes the power reception request px. Therefore, the power reception request px is transmitted by the communicator 150 in step A1 and received by the communicator 350 in step C1.

[0077] Hereafter, the generated power P ORI , maximum power generation P MAX , power suppression width P Δ and power demand P LOAD While using the term "data D that can identify the time period when there is power that the charging station 200 can receive and the amount of that power," JUD The power reception request px included in the "" will be described.

[0078] Generated power P ORI is the power generated by the natural energy power generation device 110 at a certain point in time.

[0079] Maximum power generation P MAX is the power generated by the natural energy power generation device 110 when it is assumed that the output is controlled to the maximum at a certain point in time. Specifically, the maximum power generation P MAX can be the generated power when the natural energy power generation device 110 is made to generate the maximum power according to the weather forecast. When the maximum output control is performed, the generated power P ORI is the maximum power generation P MAX On the other hand, when the output suppression control is performed, the generated power P ORI is the maximum power generation P MAX is different.

[0080] The power generation plan is calculated by taking into account the following information: ORI The time series may be generated by the controller 160 or the controller 360.

[0081] Power suppression width P Δ is the maximum power generation P MAX is the power subtracted from

[0082] Demand power P LOAD is the power demand of the load 435.

[0083] In the embodiment, in the control performed by the controller 160 of the distributed power system 100, the control values ​​such as power are discrete values. Taking this into consideration, the controller 160 calculates the estimated required power P EST The generated power P ORI Then, the controller 160 controls the power generation of the natural energy power generation device 110 in accordance with the generated power generation plan. EST is the expected required power in either the internal area of ​​the distributed power system 100 or the external area connected to the distributed power system 100. EST is the demand power P of the load 435 LOAD , power charged to the power storage device 120, and reverse flow power flowing back to the power grid 550. When reverse flow is prohibited, the expected required power P EST In this embodiment, the controller 160 controls the maximum power generation P MAX Generated power P ORI The difference obtained by subtracting the power suppression width P Δ Or power generation surplus G SUR In this way, the power receiving request px is generated. Data D including the power receiving request px JUD is transmitted by the communicator 150 and received by the communicator 350. In this way, steps A1 and C1 are realized.

[0084] <Step B1 and Step C2> In the charging plan qx, the plan for charging power supplied from the charging station 200 to one or more electric vehicles 600 is based on the power received by the charging station 200 from the outside (hereinafter referred to as received power P REC ) can be interpreted as a time series of plans. EVS includes the charging plan qx. Thus, the charging plan qx is transmitted by the communicator 250 in step B1 and received by the communicator 350 in step C2.

[0085] <Step C3> As described above, the collaboration promoting device 300 receives the power reception request px in step C1 and receives the charging plan qx in step C2. In step C3, the controller 360 performs "matching" between the power reception request px and the charging plan qx. The controller 360 generates a collaboration plan r1 as a result. In this embodiment, the collaboration plan r1 includes a proposal for a time-dependent change in the power to be interchanged, i.e., supplied, from the distributed power system 100 to the charging station 200. Hereinafter, the interchanged power related to the proposal of the collaboration plan r1 will be referred to as interchanged power P SHA It is written as follows.

[0086] An example of generating a collaborative plan r1 will be described below with reference to FIGS. 6 to 8. In the following description, "electric energy" refers to the time integral of "electric power." The numerical values ​​in the unit "kW" shown as examples in FIGS. 6 to 8 are the average values ​​of electric power in each time period. This also applies to FIG. 9 and Tables 1 to 6. The same applies to the explanations related to FIGS. 6 to 9 and Tables 1 to 6.

[0087] 6 to 8, the unit price of electricity purchased is assumed to be lower during the time period from 3 PM to 6 PM than during the time period from 1 PM to 3 PM. Here, the unit price of electricity purchased is the price per unit of electricity when the linked system 400 purchases electricity from the commercial power source 500.

[0088] Here, the "power generation reserve G" related to Figure 6 etc. SUR " will be explained. SUR " Based on this, Data D JUD will be further explained.

[0089] Power generation reserve G SUR is the surplus power generation capacity of the distributed power system 100 at the time when the energy generation and storage plan p0 is planned. SUR is, for example, the demand power P of the load 435 LOAD and the charging power of the power storage device 120. The "surplus power generation capacity" may be power determined by an arbitrary algorithm.

[0090] Power generation reserve G SUR is the power demand P LOAD It may be such that the larger the value, the smaller the value.

[0091] As mentioned above, data D JUD is data that can identify the time period during which there is power that the charging station 200 can receive from the power generated by the distributed power system 100 and the magnitude of that power. The power that the charging station 200 can receive is specifically the surplus power generated by the distributed power system 100. This surplus power is referred to as the power generation surplus G SUR is equivalent to

[0092] In the embodiment, it is assumed that output suppression control is performed. SUR and Data D JUD The output suppression control can be reflected in the above.

[0093] When the power generation plan includes a time period in which the natural energy power generation device 110 performs output suppression control, the natural energy power generation device 110 generates power P ORI Therefore, the power suppression range P Δ is the power generation surplus G SUR It can be counted as: Power generation reserve G SUR is the power suppression width P Δ The larger the value, the larger the value.

[0094] Specifically, the power generation surplus G SUR may be given by the following Equation 1:

[0095] When the power generation plan includes a time period in which the natural energy power generation device 110 performs output suppression control, data D JUDThe maximum power generation amount P is, for example, data indicating the time period in which the output is suppressed by the output suppression control and the change over time in the magnitude of the power to be suppressed during that time period; data indicating the time period in which the power is desired to be received and the change over time in the magnitude of the power desired to be received during that time period; or MAX Changes over time and generated power P ORI The above expression "requesting power reception" means that a supply of power to equipment outside the distributed power generation system 100 is desired.

[0096] FIG. 6 shows an example of the power generation reserve G SUR and received power P REC Specifically, (a) of FIG. 6 shows the relationship between the power generation reserve G SUR 6 shows the change over time of the average value of the received power P REC The graph shows the change in the average value over time.

[0097] The horizontal axis of (a) and (b1) in Figure 6 represents time. The vertical axis of (a) and (b1) in Figure 6 represent the power generation reserve G SUR and received power P REC is.

[0098] The power indicated by the bar graph in Fig. 6 represents the average power value for a one-hour time period starting from the time indicated below the bar graph, and this also applies to Figs. 7 to 9.

[0099] As shown in FIG. 6(a), the power generation surplus G SUR The average values ​​are shown in Table 1 below.

[0100] As shown by the dotted line 201 in (b1) of FIG. 6, it is assumed that peak control (P / C) is functioning in the example of (b1) of FIG. 6. RECThe upper limit of the P / C power, i.e., the P / C power, is 0 kW between 1:00 PM and 3:00 PM, and 24 kW at other times. Note that, depending on the configuration of the charging station, a minimum supply power may be specified, and the P / C power may be set to the value of the minimum supply power rather than 0 kW. Also, the setting of 0 kW may be achieved not by the peak control function, but by power supply stop control of the charger. In this embodiment, the description will be given assuming that the P / C power is set to 0 kW.

[0101] As shown in (b1) of FIG. 6, in the charging plan qx, the received power P REC are as shown in Table 2 below.

[0102] In the example of (b1) of FIG. 6, the received power P REC In the initial state, all of the power generation surplus G SUR and the received power P REC From the change over time, the power generation reserve G SUR At least a part of the received power P REC By covering this, the power generation surplus G SUR It can be seen that the situation is such that the amount of electricity generated can be effectively utilized. SUR Effective utilization of renewable energy leads to effective utilization of renewable energy.

[0103] In an embodiment, the controller 360 controls: JUD The time period during which the charging station 200 can receive power and the magnitude of the power, which can be identified from the REC Based on the time-dependent change of and SHA In this way, the controller 360 generates the collaboration plan r1. For convenience of explanation, the explanations of FIGS. 7 and 8 are given in this order. In the embodiment, however, the controller 360 in the collaboration promoting device 300 determines the time-dependent change of the interchange power P SHA Then, the controller 260 in the charging station 200 determines a new charging plan qx. In the embodiment, the collaborative plan r1 is generated based on the interchange power P SHA This is equivalent to a decision.

[0104] The generation of the collaborative plan r1 will be described in more detail with reference to FIGS.

[0105] FIG. 7 shows the interchange power P SHA 7 is an explanatory diagram for the derivation of (b1) in Fig. 7. Specifically, (b1) in Fig. 7 represents the charging plan qx received by the collaboration promoting device 300, and is the same as (b1) in Fig. 6. (b2) in Fig. 7 represents the charging plan assumed after changes when the collaboration plan r1 is generated.

[0106] In the charging plan according to the example of (b2) of FIG. 7, the power generation surplus G SUR The received power P for each time period is effectively utilized. REC The assumed values ​​are as shown in Table 3 below.

[0107] In the example of (b1) in Fig. 7, it is assumed that the P / C power is 0 kW in the time period from 1 PM to 3 PM, and 24 kW in other time periods. Power supply to one or more electric vehicles 600 is performed within this P / C power range.

[0108] In contrast, in the example of (b2) of FIG. 7, the power generation surplus G SUR A part of this is interchange power P SHA 7(b2) indicates that the received power P REC Of the estimated values, interchange power P SHA According to the change from (b1) to (b2) in FIG. 7, the interchange power P SHA This reduces the electricity bill for purchasing electricity from the commercial power source 500.

[0109] In (b2) of FIG. 7, in addition to the original upper limit of 24 kW, the interchangeable power P SHA By utilizing this, a large receiving power P REC Therefore, for example, the electric vehicle 600 that arrives at the charging station 200 at 9:00 may be able to complete charging earlier and become operational again earlier.

[0110] The change from (b1) to (b2) in FIG. 7 is intended to temporarily increase the P / C power. The increase in the P / C power is, for example, SHA Specifically, the changes from (b1) to (b2) in FIG. 7 are based on the assumption that the P / C power is temporarily increased to 48 kW in the time slot from 9:00 to 11:00, as shown by the dotted line 202. In (b2) in FIG. 7, the assumed P / C power is 24 kW in the time slots from 0:00 to 9:00, from 11:00 to 13:00, and from 15:00 to 24:00. In addition, the assumed P / C power is 20 kW in the time slot from 13:00 to 15:00.

[0111] In (b2) of FIG. 7, for example, charging of the electric vehicle 600 that arrives at the charging station 200 at 1 PM can start at 1 PM instead of 3 PM. As a result, the charging of the electric vehicle 600 can be completed earlier and the time when it becomes operational again can be earlier. Furthermore, when the interchanged power P SHA Therefore, the interchange power P SHA By using this, it is possible to avoid a situation in which the electricity bill increases due to the power purchase caused by the change from (b1) to (b2) in FIG.

[0112] As can be understood from the above description, a change in the charging plan qx may involve a change in the length and / or start time of the period for charging the electric vehicle 600. For example, a change in the charging plan qx may shorten and / or advance the period for charging the electric vehicle 600. The shortening and / or advancement may bring forward the time at which the electric vehicle 600 becomes operable again.

[0113] There are various advantages to the electric vehicle 600 becoming operational again at an earlier time. For example, if the electric vehicle 600 becomes operational again at an earlier time, the flexibility of the operation plan (which may also be referred to as a vehicle allocation plan, etc.) for the electric vehicle 600 can be increased.

[0114] FIG. 8 shows the interchange power P SHA 8 is an explanatory diagram of the change over time of the interchange power P SHAThe hatching in Fig. 8 is the same as the hatching in (b2) of Fig. 7.

[0115] Specifically, in the collaborative plan r1 shown in FIG. 8, the interchange power P SHA are as shown in Table 4 below.

[0116] The algorithm for determining the collaborative plan r1 is not particularly limited. In the embodiment, the algorithm is based on the received power P REC At the stage where the change over time of the interchange power P SHA This determines the change over time.

[0117] <Steps C4 and A3> In step C4, the controller 360 generates energy creation / storage plan change information j0 based on the collaborative plan r1. In step A3, the controller 160 changes the energy creation / storage plan p0 based on the energy creation / storage plan change information j0.

[0118] In the first example, the energy generation / storage plan change information j0 is SHA The controller 160 includes information representing the time-dependent change of the interchange power P SHA The power generation plan is changed based on information indicating the time-dependent change of the power generation power P of the natural energy power generation device 110 in the power generation plan before the change. ORI , P OLD The power generation power P of the natural energy power generation device 110 in the changed power generation plan is expressed as ORI , P NEW It is written as follows.

[0119] 9 is an explanatory diagram of a change in the power generation plan according to the first example. Specifically, (a1) of FIG. 9 shows the power generation plan P OLD 9 (a2) shows the change over time of the average value of the generated power P NEW This shows the change in the average value over time.

[0120] The horizontal axes of (a1) and (a2) in Fig. 9 represent time. The vertical axes of (a1) and (a2) in Fig. 9 represent the generated power P OLD and P NEW is.

[0121] In the power generation plan before the change shown in (a1) of Fig. 9, output suppression control is performed in the time period from 8:00 to 17:00, as shown by the dotted line 101. In this time period, the output suppression control reduces the power generation power P OLD The upper limit is 48kW.

[0122] Specifically, in the power generation plan before the change in (a1) of FIG. 9, the power generation power P of the natural energy power generation device 110 in each time zone is OLD is as shown in Table 5 below. In Table 5, the power suppression width P Δ and maximum power generation P MAX Also shown.

[0123] In comparison with the power generation plan before the change shown in (a1) of FIG. 9, in the power generation plan after the change shown in (a2) of FIG. 9, the power generated by the natural energy power generation device 110 is the interchange power P SHA It has increased by .

[0124] In (a2) of Fig. 9, the portion occupied by this increased power is indicated by hatching. SHA This corresponds to (b2) in FIG. 7 and the hatching in FIG. 8.

[0125] In the changed power generation plan according to (a2) in Fig. 9, output suppression control is performed in the time slots from 11:00 to 13:00 and from 15:00 to 17:00, as shown by the dotted line 102. By the output suppression control, the power generation power P NEW However, the following are set: - Between 11:00 and 13:00, the upper limit is 48kW; - Between 15:00 and 16:00, the upper limit is 48kW; - Between 16:00 and 17:00, the upper limit is 68kW.

[0126] Specifically, in the changed power generation plan according to (a2) of FIG. 9, the power generation power P of the natural energy power generation device 110 in each time zone is NEW is as shown in Table 6 below. In Table 6, the power suppression width P Δand maximum power generation P MAX Also shown.

[0127] According to the example of (a2) in FIG. 9, the power generation surplus G SUR can be effectively utilized. SUR Effective utilization of renewable energy leads to effective utilization of renewable energy.

[0128] In the first example shown in Fig. 9, the first change over time is equal to the sum of the second change over time and the third change over time. That is, the first change over time = the second change over time + the third change over time. Here, the first change over time is the changed generated power P NEW The second change over time is the change over time of the power generation power P before the change, which is shown in the bar graph (a1) of FIG. OLD The third change over time is the change over time of the interchange power P shown in (a2) of FIG. 9, (b2) of FIG. 7, and hatched in FIG. 8. SHA This is the change over time.

[0129] <Step A4> The energy generation and storage plan includes a power generation plan and a power storage plan p2. The controller 160 causes the natural energy power generation device 110 to generate power in accordance with the power generation plan. The controller 160 causes the power storage device 120 to charge and discharge based on the power storage plan p2.

[0130] <Steps C4 and B3> In step C4, the controller 360 generates charging plan change information k0 based on the collaborative plan r1. In step B3, the controller 260 changes the charging plan qx based on the charging plan change information k0.

[0131] In the embodiment, the charging plan change information k0 includes interchange power information. The interchange power information is the interchange power P SHA The time period when the interchange power P exists SHA Specifically, in the embodiment, the interchange power information indicates the magnitude of the interchange power P SHA In FIG. 8, the time-dependent change of the interchange power P SHA 7 shows interchange power information, which is information that indicates a change over time in the charging plan qx after the change. In (b2) of FIG. 7, the charging plan qx after the change is shown.

[0132] In embodiments, a change in the charging plan qx may involve changing the length and / or start time of a charging period for at least one electric vehicle 600 in the one or more electric vehicles 600 being charged, as will be understood from the discussion with reference to FIG.

[0133] In the embodiment, the charging plan change information k0 includes P / C power change information in addition to interchange power information. Specifically, in the embodiment, the P / C power change information indicates to what power the P / C power is to be changed in what time period. When the charging plan qx is changed according to (b2) of FIG. 7 , for example, the P / C power change information indicates that the P / C power is to be temporarily increased to 48 kW in the time period from 9:00 to 11:00.

[0134] In the embodiment, in step C6, the communicator 350 transmits the charging plan change information k0 to the communicator 250. As a result, in addition to the interchange power information, P / C power change information is transmitted from the communicator 350 to the communicator 250. In step B3, the controller 260 changes the P / C power in accordance with the P / C power change information. The increase in the P / C power is, for example, SHA In the example of (b2) of Fig. 7, the P / C power temporarily increases to 48 kW in the time period from 9:00 to 11:00.

[0135] <Step B4> The controller 260 causes the charging device 210 to supply power to one or more electric vehicles 600 in accordance with the charging plan qx.

[0136] (Technologies Applicable to the Embodiments) Hereinafter, technologies applicable to the above-described embodiments will be described.

[0137] [Technology Applicable to Electric Vehicle 600] The electric vehicle 600 may be a drone, an electric ship, an electric aircraft (commonly known as a "flying car"), or the like.

[0138] The power storage device 650 may be a capacitor. The power storage device 650 may include both a storage battery and a capacitor.

[0139] [Technology Applicable to Distributed Power System 100] The number of generators included in the natural energy power generation apparatus 110 may be one. In a modified example in which the number of generators is one, the maximum output control performed by the controller 160 may be MPPT control of the natural energy power generation apparatus 110 while maintaining a state in which the one generator in the natural energy power generation apparatus 110 is connected to the electric circuit 405. The output suppression control performed by the controller 160 may be a state in which the one generator in the natural energy power generation apparatus 110 is disconnected from the electric circuit 405.

[0140] The natural energy power generation device 110 may be a wind power generation device, and the generator may be a windmill. The natural energy power generation device 110 may be a tidal power generation device or a geothermal power generation device, and the generator may be a turbine.

[0141] The power storage device 120 may be a capacitor. The power storage device 120 may include both a storage battery and a capacitor.

[0142] The load 435 may be a household load. In this case, at least one consumer device in the home consumes power. The consumer device may be, for example, a household electrical appliance. The household electrical appliance may be, for example, a television, a refrigerator, or the like.

[0143] The controller 160 may appropriately change the power generation plan in accordance with the actual power generation power of the natural energy power generation device 110. The change in the power generation plan may be implemented, for example, when the actual power generation power of the natural energy power generation device 110 deviates from the original power generation plan due to an incorrect weather forecast or other reasons. Furthermore, the power generation plan changed by the controller 160 may be appropriately transmitted to the collaboration promotion device 300 as a new (updated) power generation plan.

[0144] [Technology Applicable to Charging Station 200] The concept of a charging station encompasses charging and discharging stations. When the charging station 200 is a charging and discharging station, it is connected to one or more electric vehicles 600 and can receive a supply of power from the one or more electric vehicles 600. This allows power to be discharged from the one or more electric vehicles 600.

[0145] The charging device is a concept that encompasses a charging / discharging device. When the charging device 210 is a charging / discharging device, it is connected to one or more electric vehicles 600 and can receive a supply of power from one or more electric vehicles 600. This allows power to be discharged from one or more electric vehicles 600.

[0146] The charger is a concept that encompasses a charger / discharger. When the charger 215 is a charger / discharger, it is connected to the electric vehicle 600 and can receive a supply of power from the electric vehicle 600. This allows power to be discharged from the electric vehicle 600.

[0147] The charging stand is a concept that encompasses charging and discharging stands. When the charging stand as the charger 215 is a charging and discharging stand, it is connected to the electric vehicle 600 and can receive a supply of electric power from the electric vehicle 600. This allows electric power to be discharged from the electric vehicle 600.

[0148] The electric power supplied from one or more electric vehicles 600 to the charging / discharging station as the charging station 200 may be supplied to, for example, the power storage device 120. This electric power may also be supplied to, for example, the load 435. This electric power may also be supplied to, for example, the power grid 550.

[0149] The charging plan is a concept that encompasses charging and discharging plans. The charging plan qx may include not only a plan for the change over time of charging power supplied from the charging station 200 to one or more electric vehicles 600, but also a plan for the change over time of discharging power supplied from one or more electric vehicles 600 to the charging station 200.

[0150] The controller 260 may appropriately change the charging plan qx according to the actual status of the electric vehicles 600, and control the charging power supplied from the charging station 200 to one or more electric vehicles 600. The change in the charging plan qx may be implemented, for example, when one or more electric vehicles 600 do not arrive at the charging station 200 at the predicted time, when the charging rates of one or more electric vehicles 600 at the time of arrival are outside the expected range, or the like. Furthermore, the change in the charging plan qx made by the controller 260 may be appropriately transmitted to the collaboration promotion device 300 as a new (updated) charging plan qx.

[0151] The number of chargers 215 included in the charging device 210 may be one.

[0152] [Technology applicable to the collaboration promotion device 300] In one example, data D can be used to identify a time period when the charging station 200 can receive power and the amount of power. JUD is the maximum power generation P MAX and generated power P ORI In the first variant, the data D JUD is the power suppression width P Δ and generated power P ORI In a second variant, the data D JUD is the power suppression width P Δ and maximum power generation P MAX Includes a combination of:

[0153] As can be understood from the above explanation, the maximum power generation P MAX , generated power P ORI and power suppression width P Δ The relationship shown in the following Equation 2 holds among these three. Therefore, if two of these three are known, the remaining one can be determined.

[0154] The collaboration promotion device 300 may be included in the distributed power supply system 100 or in the charging station 200 .

[0155] Power generation reserve G SUR may be determined in the linkage system 400. SURmay be objectively determined by an entity outside the collaboration system 400 .

[0156] Specifically, the power generation surplus G SUR may be determined by controller 160, may be determined by controller 260, or may be determined by controller 360.

[0157] [Forms in which output suppression control is assumed to be performed and forms in which planned, i.e., intended, surplus power can be reflected] The surplus power of the distributed power system 100 is the generated power P ORI Of which, power demand P LOAD The power flowing backward to the power grid 550 is an example of surplus power. In the following, the planned surplus power is referred to as P SUR＿P The surplus power that is currently being generated is expressed as P SUR＿R It is written as follows.

[0158] As can be understood from the above description, the controller 160 controls the interchange power P SHA The power generation plan is determined based on information representing a change over time in the power generation amount. The determination of the power generation plan may be performed by changing the power generation plan as shown in FIG. 9, or may be performed without changing the power generation plan.

[0159] Specifically, in the above-described embodiment, it is assumed that output suppression control is performed. SUR and Data D JUD The output suppression control can be reflected in the interchange power P SHA Decisions on the power generation plan based on information representing the change over time in the power generation plan will change the power generation plan.

[0160] In contrast, in another embodiment, the execution of output suppression control is not assumed. SUR and Data D JUD , the planned or intended surplus power P SUR＿P The interchange power P SHA Decisions about generation planning based on information that represents changes over time in the generation plan do not require changes to the generation plan.

[0161] In the power generation plan, the surplus power P SUR＿P When the time period includes a time period in which the load 435 is expected to generate a power demand P LOAD It can be predicted that the surplus power P SUR＿P is the power generation surplus G SUR It can be counted as: Power generation reserve G SUR is the surplus power P SUR＿P The larger the value, the larger the value.

[0162] Specifically, the power generation surplus G SUR may be given by the following Equation 3:

[0163] In the power generation plan, the surplus power P SUR＿P When the time period in which JUD For example, surplus power P SUR＿P The time period in which the surplus power P SUR＿P Data showing the time-varying change of the time period during which the power is desired to be received and the amount of power desired to be received, or Data showing the time-varying change of the power generation amount P ORI Changes over time in power demand P LOAD and data indicating a change over time in the charge and discharge power of the power storage device 120. Note that the above expression "requesting power reception" means that a supply of power to equipment outside the distributed power generation system 100 is desired.

[0164] The power generation plan includes surplus power P in the distributed power system 100. SUR＿P The time period includes the time when surplus power P is expected to occur, and SUR＿R When this occurs, the surplus power P SUR＿R This allows the surplus power P SUR＿R However, it is possible to reduce the penalty due to the reverse flow of surplus power P SUR＿R The power may be reversed.

[0165] [Steps C3 to C6, A2 to A4, and B2 to B4] In the above-described embodiment, in step C3, the controller 360 generates a collaborative plan r1 based on the power reception request px and the charging plan qx. In step C4, the controller 360 generates energy generation / storage plan change information j0 based on the collaborative plan r1. In step C5, the communicator 350 transmits the energy generation / storage plan change information j0 to the communicator 150. As a result, in step A2, the communicator 150 receives the energy generation / storage plan change information j0 from the communicator 350. In step A3, the controller 160 changes the energy generation / storage plan p0 based on the energy generation / storage plan change information j0.

[0166] In the first modified example, the controller 360 changes the energy creation plan p0 based on the collaborative plan r1. The communicator 350 transmits the changed energy creation plan p0 to the communicator 150. As a result, the communicator 150 receives the changed energy creation plan p0 from the communicator 350.

[0167] In the second modified example, the controller 360 changes the energy generation / storage plan p0 based on the power reception request px and the charging plan qx without creating the collaborative plan r1. The communicator 350 transmits the changed energy generation / storage plan p0 to the communicator 150. As a result, the communicator 150 receives the changed energy generation / storage plan p0 from the communicator 350.

[0168] In the above-described embodiment, in step C3, the controller 360 generates the collaborative plan r1 based on the power reception request px and the charging plan qx. In step C4, the controller 360 generates charging plan change information k0 based on the collaborative plan r1. In step C6, the communicator 350 transmits the charging plan change information k0 to the communicator 250. As a result, in step B2, the communicator 250 receives the charging plan change information k0 from the communicator 350. In step B3, the controller 260 changes the charging plan qx based on the charging plan change information k0.

[0169] In the third modified example, the controller 360 changes the charging plan qx based on the collaborative plan r1. The communicator 350 transmits the changed charging plan qx to the communicator 250. As a result, the communicator 250 receives the changed charging plan qx from the communicator 350.

[0170] In the fourth modified example, the controller 360 changes the charging plan qx based on the power reception request px and the charging plan qx without creating the collaborative plan r1. The communicator 350 transmits the changed charging plan qx to the communicator 250. As a result, the communicator 250 receives the changed charging plan qx from the communicator 350.

[0171] The first or second modification may be combined with the third or fourth modification.

[0172] (Power generation / storage plan change information j0) In the first example of the above-described embodiment, as shown in FIG. 9, the controller 160 SHA The power generation plan is changed based on information representing a time-dependent change in the interchange power P SHA The controller 160 changes the power storage plan p2 based on the information representing the time-dependent change of the interchange power P SHA Based on information indicating a change over time in the power generation plan p1, both the power generation plan p2 and the power storage plan p2 may be changed, or only one of the power generation plan p1 and the power storage plan p2 may be changed.

[0173] (Charging plan change information k0) In the above embodiment, the interchange power information in the charging plan change information k0 is the interchange power P SHA However, the interchange power information is information that indicates the change over time of the transmitted power P SHA Interchangeable power P in the time period when SHA It may be an average value of the magnitude of

[0174] In the above-described embodiment, the charging plan change information k0 includes interchange power information, specifically, interchange power information and P / C power change information. However, the charging plan change information k0 may include only one of the interchange power information and the P / C power change information. That is, the charging plan change information k0 may include at least one of the interchange power information and the P / C power change information.

[0175] (Scenario Information) The collaboration promotion device 300 may be provided with information (scenario information) indicating when and how many electric vehicles 600 will arrive at the charging station 200. The scenario information makes it possible to accurately calculate the demand for using charging power that exceeds the P / C power during the P / C time period.

[0176] [Planning and Forecasting Period, etc.] As can be understood from the above description, planning and forecasting can be for a given period. For example, data D JUD , power generation and storage plan p0, power generation plan, power storage plan p2, load power prediction p3, reverse flow plan p4, charging plan qx, operation plan for operating the electric vehicle 600, vehicle dispatch plan, collaboration plan r1, power generation and storage plan change information j0, charging plan change information k0, power exchange information, P / C power change information, etc. may relate to a given period.

[0177] In a predetermined period that is at least a part of a given period, the power generation surplus G SUR 6 to 9, the given period is 24 hours, specifically from 0:00 to 24:00. The predetermined period is 9 hours, specifically from 8:00 to 17:00. The predetermined period may be equal to or different from the given period.

[0178] Some of the plans in the above description may be omitted. For example, if reverse flow is prohibited, the reverse flow plan p4 may not exist.

[0179] [Modification of Flowchart] The order and content of the steps in the above-described flowchart may be changed as appropriate. Some of the steps in the above-described flowchart may be omitted. For example, either step C1 or step C2 may be executed first. Either step C5 or step C6 may be executed first.

[0180] In the above-described embodiment, the process according to the flowchart in Fig. 5 is executed on demand. However, the process according to the flowchart in Fig. 5 may be repeated at regular intervals. The regular control interval can be set, for example, to accommodate fluctuations in the amount of power purchased from the commercial power source 500 to the power receiving equipment in the distributed power generation system 100 and / or the charging station 200 within the scope of the power purchase contract. Fluctuations in the amount of purchased power can occur due to, for example, fluctuations in the power demand of the power receiving equipment, fluctuations in surplus power in the distributed power generation system 100, etc. The regular control interval is, for example, 30 minutes.

[0181] When the process according to the flowchart of FIG. 5 is repeated at regular intervals, the interval is not limited to 30 minutes. Another example of the control interval is 10 minutes. A short control interval is advantageous from the viewpoint of improving control accuracy. The control interval may be one day or several days. An example of a long control interval can be applied, for example, when peak control (P / C) is considered one day or several days in advance.

[0182] In the above-described embodiment relating to the flowchart of FIG. 5 , the transmission of the power reception request px from the distributed power system 100 and the transmission of the charging plan qx from the charging station 200 are described as being synchronized. However, because the distributed power system 100 and the charging station 200 are not necessarily precisely synchronized in time, the collaboration promotion device 300 may only receive information from one of the two, whether the processing is performed on-demand or periodically. In this case, the collaboration promotion device 300 may transmit a request to prompt the other to transmit information, reuse the information most recently received from the other as valid, or wait for the other to transmit information. These processes may be performed in an appropriate combination to ensure that the necessary information is available for generating the collaboration plan r1.

[0183] In the above embodiment, in step C3, the controller 360 performs "matching" between the power reception request px and the charging plan qx. However, matching is not essential. For example, without matching the power reception request px from the distributed power system 100 with the charging plan from the charging station 200, only the power reception request px from the distributed power system 100 is acquired, and the power generation reserve G is calculated from this power reception request px. SUR The period during which the above occurs may be identified, and this information may be transmitted to charging station 200, causing charging station 200 to change charging plan qx.

[0184] [About Data] As mentioned above, data D JUD is an example of data that can identify a time period when there is power available for the charging station 200 of the present disclosure and the amount of that power. JUD includes the power reception request px. JUD may include other data together with or instead of the power receiving demand px. The other data may include, for example, the predicted power generation of the distributed power system 100 and the power demand P of the load 435. LOAD The data includes plans and

[0185] As mentioned above, data D EVS is an example of data that can identify the time period during which power can be received from the distributed power supply system 100 of the present disclosure and the amount of power that can be received. EVS includes the charging plan qx. EVS may include other data together with or instead of the charging plan qx. The other data may be, for example, (e1) data indicating the power purchase contract price, the time period in which the P / C is executed, and the P / C power for that time period, (e2) data indicating an expected power shortage from the power that is originally intended to be charged to the electric vehicle 600 due to the P / C, (e3) data that can be identified for deriving the data of (e1) above, or (e4) data that can be identified for deriving the data of (e2) above.

[0186] A specific example of the data (e1) above is data showing P / C power during a time period when the power purchase contract power price becomes high. A specific example of the data (e2) above is data showing the difference obtained by subtracting P / C power from the power that would normally be charged.

[0187] [Others] Unless otherwise stated, in this specification, "change in power over time" may specifically mean "change in the magnitude of power over time." Furthermore, unless otherwise stated, in this specification, "information" and "data" may be interpreted as interchangeable.

[0188] (Method and Apparatus Understood from the Above Description) As can be understood from the above description, the present disclosure discloses a method for supporting a charging plan at a charging station 200 for an electric vehicle 600 that can receive power from a distributed power supply system 100 that includes a natural energy power generation device 110 and a power storage device 120. Specifically, the support method is performed by a collaboration promotion device 300.

[0189] In one example, the support method includes: generating data D that can identify a time period when power is available for the charging station 200 and the amount of power; JUD Specifically, the collaboration promoting device 300 receives the data D JUD The support method may receive the received data D JUD The method includes a step in which the collaboration promoting device 300 supports a change in the charging plan qx of the charging station 200 in consideration of the above.

[0190] This configuration is suitable for effectively utilizing natural energy by mutually linking the distributed power supply system 100 and the charging station 200. Specifically, this configuration makes it possible to effectively utilize natural energy by changing the charging plan qx.

[0191] In one example, the assistance method includes a step in which the collaboration promotion device 300 receives a charging plan qx of the charging station 200. Specifically, the collaboration promotion device 300 may receive the charging plan qx from the charging station 200. Data D JUDBased on the above and the charging plan qx, the collaboration promoting device 300 supports a change in the charging plan qx of the charging station 200.

[0192] In this configuration, data D JUD In addition, it is possible to provide support for changing the charging plan qx based on the charging plan qx. Therefore, it is easy to provide support for changing the charging plan qx appropriately.

[0193] In one example, data D JUD The information includes information that can identify the time period during which charging station 200 can receive power and the amount of that power during a predetermined period.

[0194] This configuration is suitable for effectively utilizing natural energy for a predetermined period of time, which corresponds to the time slot from 8:00 to 17:00 in the example of FIG.

[0195] In one example, data D JUD includes plan data including a power generation plan of the natural energy power generation device 110 and a charging plan qx of the power storage device 120 in the distributed power system 100. The plan data is data that can be used to determine whether there is power available for the charging station 200 to receive in a predetermined period of time.

[0196] According to this configuration, natural energy can be effectively utilized for a predetermined period based on the power generation plan and the charging plan qx.

[0197] In one example, the change support includes the collaboration promoting device 300 transmitting information regarding a change, for a specific period, of the upper limit value of charging power that is set in advance in the charging station 200. Specifically, the collaboration promoting device 300 may transmit this information to the charging station 200.

[0198] According to this configuration, the maximum value of the electric power supplied from the charging station 200 to one or more electric vehicles 600 can be adjusted according to the electric power supplied to the charging station 200 .

[0199] The specific period in this configuration is, for example, the power generation surplus G SURThe upper limit value according to this configuration may specifically correspond to P / C power. The information according to this configuration may specifically correspond to P / C power change information.

[0200] In this configuration, the change in the upper limit value is typically an increase in the upper limit value. The increase in the upper limit value is, for example, SUR However, the change in the upper limit value may be a decrease in the upper limit value. The decrease in the upper limit value is compatible with, for example, peak shifting of charging power in charging station 200.

[0201] The specific period according to this configuration corresponds to the time period from 9:00 to 11:00 in the examples of (b1) and (b2) in FIG.

[0202] The present disclosure also discloses a charging planning method in a charging station 200 that can receive power from a distributed power supply system 100 that includes a natural energy power generation device 110 and a power storage device 120. Specifically, the charging planning method is performed by the charging station 200. The charging planning method includes a step in which the charging station 200 receives change support in the support method for the charging plan qx described above.

[0203] In one example, the charging planning method includes a step of moving, based on the change support, at least a portion of the charge amount for a period different from the predetermined period in the charging plan qx to at least a portion of the predetermined period. This movement can be performed by the charging station 200.

[0204] According to this configuration, the power generation surplus G SUR This allows the time when the electric vehicle 600 becomes operable again to be adjusted.

[0205] The different period according to this configuration corresponds to the time slot from 5 PM to 6 PM in the examples of (b1) and (b2) in Figure 7. At least a part of the predetermined period according to this configuration corresponds to the time slot from 4 PM to 5 PM in the examples of (b1) and (b2) in Figure 7.

[0206] Moreover, the different period according to this configuration corresponds to the time slot from 3 PM to 5 PM in the examples of (b1) and (b2) in Figure 7. At least a part of the predetermined period according to this configuration corresponds to the time slot from 1 PM to 3 PM in the examples of (b1) and (b2) in Figure 7.

[0207] In one example, the charging planning method includes a step of increasing the upper limit value of the charging power of charging station 200 for at least a part of a predetermined period in charging plan qx based on the change support. This reduction can be performed by charging station 200.

[0208] By increasing the upper limit value according to this configuration, natural energy can be effectively utilized to charge the electric vehicle 600 .

[0209] At least a portion of the period according to this configuration corresponds to the time slot from 9:00 to 11:00 in the examples of (b1) and (b2) in Fig. 7. Specifically, in the example of (b1) in Fig. 7, the upper limit value in the time slot from 9:00 to 11:00 is 24 kW. In the example of (b2) in Fig. 7, the upper limit value in the time slot from 9:00 to 11:00 is 48 kW.

[0210] The present disclosure also discloses a method for supporting a power generation plan for a distributed power system 100 that includes a natural energy power generation device 110 and a power storage device 120 and is capable of supplying power to a charging station 200 for an electric vehicle 600. Specifically, the support method is performed by a collaboration promotion device 300.

[0211] In one example, the support method includes a step of receiving a charging plan qx by the collaboration promotion device 300. Specifically, the collaboration promotion device 300 may receive the charging plan qx from the charging station 200. The support method includes a step of the collaboration promotion device 300 supporting a change in the power generation plan of the natural energy power generation device 110 in consideration of the received charging plan qx.

[0212] This configuration is suitable for effectively utilizing natural energy by linking the distributed power supply system 100 and the charging station 200. Specifically, this configuration makes it possible to effectively utilize natural energy by changing the power generation plan.

[0213] In one example, the change support is to change the power generation reserve G of the distributed power system 100 for a predetermined period in the power generation plan. SUR This includes the cooperation promoting device 300 transmitting information about the change in the criteria for determining whether or not the cooperation promotion device 300 is in a cooperative state. Specifically, the cooperation promoting device 300 may transmit this information to the natural energy power generation device 110.

[0214] The power generation reserve G in this configuration SUR The change of the judgment criteria is, for example, the change of the demand power P LOAD The power that the distributed power supply system 100 can generate in excess of the total sum of the charging power of the power storage device 120 is called the power generation surplus G SUR When it is determined that the load 435 has a demand power P LOAD The charging power of the power storage device 120 and the interchange power P SHA The power that the distributed power supply system 100 can generate in excess of the total power of SUR The criteria for judgment will be changed so that it is judged as follows.

[0215] This configuration allows for optimization of output suppression. SUR can be generated.

[0216] In the example of FIG. 9, the change in output suppression according to this configuration is the change from (a1) to (a2) of the interchange power P SHA In the example of FIG. 9, the information relating to this configuration corresponds to the energy generation / storage plan change information j0.

[0217] The present disclosure also discloses a power generation planning method for a distributed power system 100 including a natural energy power generation device 110 and a power storage device 120, which is capable of supplying power to a charging station 200 for an electric vehicle 600. Specifically, the power generation planning method is performed by the distributed power system 100.

[0218] In one example, the power generation planning method includes a step in which the distributed power system 100 receives change support in the power generation planning support method described above. SURand the distributed power supply system 100 changes the power generation plan based on the changed criteria.

[0219] The present disclosure also discloses a support device for a charging plan qx at a charging station 200 for an electric vehicle 600 that can receive power from a distributed power supply system 100 that includes a natural energy power generation device 110 and a power storage device 120 .

[0220] In one example, the support device may include data D that can identify a time period during which power is available for the charging station 200 to receive and the amount of that power. JUD The support device includes a communication device that receives the data D received by the communication device. JUD The controller supports a change in the charging plan qx of the charging station 200 in consideration of the above.

[0221] In this configuration, the assistive device may correspond to a combination of a communicator 350 and a controller 360 .

[0222] The present disclosure also discloses a power generation planning support device for a distributed power system 100 that is capable of supplying power to a charging station 200 for an electric vehicle 600 and includes a natural energy power generation device 110 and a power storage device 120 .

[0223] In one example, the assistance device includes a communicator that receives the charging plan qx. Specifically, the communicator may receive the charging plan qx from the charging station 200. The assistance device includes a controller that supports a change in the power generation plan of the natural energy power generation device 110 in consideration of the received charging plan qx.

[0224] In this configuration, the assistive device may correspond to a combination of a communicator 350 and a controller 360 .

[0225] (Additional Notes) The above description of the embodiments discloses the following techniques.

[0226] (Technology 1) A method for supporting a charging plan at a charging station for an electric vehicle that can receive power from a distributed power system equipped with a natural energy power generation device and a power storage device, the method comprising: a step of receiving data that can identify a time period when power is available for the charging station and the amount of that power; and a step of supporting a change in the charging plan for the charging station, taking into account the received data.

[0227] (Technology 2) The charging plan support method according to Technology 1, further comprising: receiving a charging plan for the charging station; and supporting a change in the charging plan for the charging station based on the data and the charging plan.

[0228] (Technology 3) The charging plan support method according to Technology 1 or 2, wherein the data includes information that can identify a time period during which the charging station can receive power and the amount of that power during a predetermined period.

[0229] (Technology 4) A method for supporting a charging plan according to any one of technologies 1 to 3, wherein the data includes plan data including a power generation plan of the natural energy power generation device in the distributed power supply system and a charging plan of the power storage device, and the plan data is data that can be used to determine whether receivable power is being generated within a specified period of time.

[0230] (Technology 5) The charging plan support method according to any one of Technologies 1 to 4, wherein the change support includes transmitting information relating to changing a preset upper limit value of charging power in a specific period at the charging station.

[0231] (Technology 6) A charging plan support device for a charging station for an electric vehicle that can receive power from a distributed power system that includes a natural energy power generation device and a power storage device, the charging plan support device comprising: a communication device that receives data that can identify a time period when power is available for the charging station and the amount of that power; and a controller that supports changes to the charging plan for the charging station, taking into account the data received by the communication device.

[0232] (Technology 7) A charging planning method in a charging station capable of receiving power from a distributed power system equipped with a natural energy power generation device and a power storage device, comprising: a step of receiving the change support in the charging plan support method of any one of Technologies 3 to 5; and a step of moving, based on the change support, at least a portion of the charge amount for a period different from the specified period in the charging plan to at least a portion of the specified period.

[0233] (Technology 8) A charging planning method in a charging station capable of receiving power from a distributed power system equipped with a natural energy power generation device and a power storage device, comprising: a step of receiving the change support in the charging plan support method of any one of Technologies 3 to 5; and a step of increasing the upper limit of the charging power of the charging station in the charging plan for at least a part of the specified period based on the change support.

[0234] (Technology 9) A method for supporting a power generation plan of a distributed power system equipped with a natural energy power generation device and a power storage device capable of supplying power to a charging station of an electric vehicle, the method comprising: a step of receiving a charging plan for the charging station; and a step of supporting a change in the power generation plan of the natural energy power generation device, taking into account the received charging plan.

[0235] (Technology 10) The method for supporting a power generation plan according to Technology 9, wherein the change support includes transmitting information relating to a change in a criterion for determining a power generation surplus for a predetermined period of the distributed power system in the power generation plan.

[0236] (Technology 11) A power generation planning method for a distributed power system equipped with a natural energy power generation device and a power storage device capable of supplying power to a charging station for an electric vehicle, the power generation planning method comprising: a step of receiving the change support in the power generation planning support method described in Technology 10; and a step of changing the judgment criteria for the power generation reserve capacity of the distributed power generation system for at least a portion of the specified period based on the change support, and changing the power generation plan based on the changed judgment criteria.

[0237] (Technology 12) A power generation planning support device for a distributed power system equipped with a natural energy power generation device and a power storage device capable of supplying power to a charging station for an electric vehicle, the power generation planning support device comprising: a communicator that receives a charging plan for the charging station; and a controller that supports changes to the power generation plan for the natural energy power generation device in consideration of the received charging plan.

[0238] The technology disclosed herein is suitable for effectively utilizing natural energy by linking a distributed power supply system and a charging station. Specifically, the technology disclosed herein enables the above-mentioned effective utilization while reducing the capacity of the charging device in the distributed power supply system. Reducing the capacity of the charging device is advantageous from the perspective of reducing the cost of the charging device, reducing the cost of the distributed power supply system, and ultimately reducing the cost of the interconnected system.

[0239] REFERENCE SIGNS LIST 100 Distributed power supply system 110 Natural energy power generation device 120 Power storage device 150, 250, 350 Communication device 160, 260, 360 Controller 200 Charging station 210 Charging device 215 Charger 270 Parking lot 280 Parking space 300 Collaboration promotion device 400 Linkage system 405 Electric circuit 435 Load 500 Commercial power supply 550 Power system 600 Electric vehicle 650 Power storage device 700 Network

Claims

1. A method for supporting charging plans at a charging station for an electric vehicle that can receive power from a distributed power supply system equipped with a natural energy power generation device and a power storage device, the method comprising: receiving data that can identify a time period when power is available for the charging station and the amount of that power; and supporting changes to the charging plan for the charging station, taking into account the received data.

2. The charging plan support method according to claim 1, further comprising the step of receiving a charging plan for the charging station, and supporting a change in the charging plan for the charging station based on the data and the charging plan.

3. The charging plan support method according to claim 1, wherein the data includes information that can identify the time periods during which the charging station can receive power and the amount of that power during a predetermined period.

4. A method for supporting a charging plan as described in claim 1, wherein the data includes planning data including a power generation plan for the natural energy power generation device in the distributed power supply system and a charging plan for the storage device, and the planning data is data that can determine whether receivable electricity is being generated within a specified period of time.

5. The charging plan support method according to claim 1, wherein the change support includes transmitting information regarding a change in a predetermined upper limit value of charging power at the charging station for a specific period of time.

6. A charging plan support device for a charging station for an electric vehicle that can receive power from a distributed power supply system that includes a natural energy power generation device and a power storage device, the charging plan support device comprising: a communication device that receives data that can identify a time period when power is available for the charging station and the amount of that power; and a controller that supports changes to the charging plan for the charging station, taking into account the data received by the communication device.

7. A charging planning method for a charging station capable of receiving power from a distributed power supply system equipped with a natural energy power generation device and a power storage device, comprising: a step of receiving the change support in the charging plan support method of any one of claims 3 to 5; and a step of moving, in the charging plan, at least a portion of the charge amount for a period different from the specified period to at least a portion of the specified period based on the change support.

8. A charging planning method for a charging station capable of receiving power from a distributed power supply system equipped with a natural energy power generation device and a power storage device, comprising: a step of receiving the change support in the charging plan support method of any one of claims 3 to 5; and a step of increasing the upper limit value of the charging power of the charging station for at least a portion of the specified period in the charging plan based on the change support.

9. A method for supporting power generation planning for a distributed power system equipped with a natural energy power generation device and a power storage device capable of supplying power to a charging station for an electric vehicle, the method comprising the steps of: receiving a charging plan for the charging station; and supporting a change in the power generation plan for the natural energy power generation device, taking into account the received charging plan.

10. A method for supporting a power generation plan as described in claim 9, wherein the change support includes transmitting information regarding a change in the criteria for determining the power generation reserve capacity of the distributed power system for a specified period in the power generation plan.

11. A power generation planning method for a distributed power system equipped with a natural energy power generation device and a power storage device capable of supplying power to a charging station for an electric vehicle, comprising: a step of receiving the change support in the power generation planning support method described in claim 10; and a step of changing the judgment criteria for the power generation reserve capacity of the distributed power generation system for at least a portion of the specified period based on the change support, and changing the power generation plan based on the changed judgment criteria.

12. A power generation planning support device for a distributed power system equipped with a natural energy power generation device and a power storage device capable of supplying power to a charging station for an electric vehicle, the power generation planning support device comprising: a communicator that receives a charging plan for the charging station; and a controller that supports changes to the power generation plan for the natural energy power generation device, taking into account the received charging plan.

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