Power supply system, management device, management method, and program

Abstract

To provide a technique capable of maximizing a value enjoyed by consumers in a power supply system.SOLUTION: There is provided a power supply system which is interconnected with a commercial power system and supplies power to a load including an electrical device that can store energy. The power supply system includes: value information acquisition means of acquiring information on the value relating to at least one of power supply / cutoff to the load, power giving / receiving to / from the commercial power system, and energy storage / release into / from the electrical device, corresponding to a predetermined purpose; control content determination means of determining contents of such power control that a total sum of the values in a predetermined period is maximum, on the basis of, the information on the value; and control means of controlling power supply / cutoff to the load, power giving / receiving to / from the commercial power system, and energy storage / release into / from the electrical device, on the basis of the contents of combination determined by the control content determination means.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to the control of a power supply system connected to a commercial power system.

Background Art

[0002] In recent years, power supply systems that can supply power to electrical devices (hereinafter also referred to as loads) even during power outages by installing storage batteries in facilities such as offices and houses have become widely popular. In such a power supply system, the storage battery only waits in a state of storing power during normal times when power is supplied from the commercial power system without problems, and there has been a problem that the charged power is not effectively utilized.

[0003] Therefore, in response to such problems, technologies for effectively utilizing storage batteries have been proposed by using the power stored in the storage battery for applications other than power supply to loads during power outages (for example, power supply for peak shifting) during normal times (for example, Patent Documents 1, 2, 3, 4, etc.).

[0004] Also, it is also known to virtually divide and secure the capacity of the storage battery according to applications (for example, backup during power outages, peak shifting, etc.) and the power supply destination of the discharged power, and secure a predetermined amount of power capacity for each application, etc. (for example, Patent Documents 1, 5, 6, etc.).

[0005] According to these technologies, for example, while securing the power capacity for backup during power outages in the storage battery, the power stored in the storage battery can be used for applications that generate value such as peak shifting and day-night shifting.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

[0007] Incidentally, in recent years, the promotion of the liberalization of the electricity market has led to a diversification of value that can be obtained by discharging electricity stored in storage batteries (or charging electricity to storage batteries). Specifically, for example, it has become possible to supply (or procure) electricity to a commercial power grid for purposes such as trading in the electricity supply and demand adjustment market (hereinafter also referred to as the adjustment power market), electricity wheeling, and imbalance avoidance, and each of these can generate economic value.

[0008] However, the value of these uses fluctuates depending on the circumstances at the time. Therefore, when the value of supplying electricity for a particular use is high at a certain point in time, if the battery has sufficient remaining capacity, it is desirable for the consumer to supply (discharge) electricity from the battery for that use.

[0009] In other words, the most valuable (in this case, objective monetary value) is determined according to the ever-changing value of electricity. If it were possible to charge and discharge the power of a storage battery so that the value of the battery (which broadly includes the overall value to consumers, not just the economic value) would be maximized, consumers would be able to make the most of the power in the storage battery. Furthermore, value for consumers can be created not only by charging and discharging the storage battery, but also by storing electricity as thermal energy according to its economic value, as in the case of an electric water heater. If the procurement, storage, and release of electricity could be controlled based on these factors, it would be possible to maximize the value enjoyed by consumers.

[0010] However, the prior art as described above either divides the capacity of the storage battery into fixed frames in advance according to the application and ensures a certain degree of power supply for each application, or estimates and secures the power required for backup by prior prediction and then uses the surplus as the power for peak shifting. Therefore, it is not possible to truly and effectively utilize the power (of the storage battery) so as to maximize the value obtained by the consumer in accordance with the fluctuation of the value of the power.

[0011] The present invention has been made in view of the above circumstances, and an object thereof is to provide a technology capable of maximizing the value enjoyed by a consumer in a power supply system.

Means for Solving the Problems

[0012] In order to achieve the above object, the present invention adopts the following configuration. That is, A power supply system that is connected to a commercial power system and supplies power to a load including an electrical device capable of accumulating energy, Value information acquisition means for acquiring value information related to at least any one of power supply to and cutoff of the load, power transfer with the commercial power system, and energy accumulation and release to and from the electrical device, corresponding to a predetermined purpose; Based on the value information, control content determination means for determining the combination content of power supply to and cutoff of the load, power transfer with the commercial power system, and energy accumulation and release to and from the electrical device, such that the total value in a predetermined period is maximized; A power supply system having control means for controlling power supply to and cutoff of the load, power transfer with the commercial power system, and energy accumulation and release to and from the electrical device, based on the combination content determined by the control content determination means.

[0013] Here, "energy" includes not only electric power (i.e., electrical energy), but also thermal energy and the like. Also, "load" includes all devices that consume electric power. Further, "predetermined purpose" relates to the use of how to use electric power. For example, in preparation for emergencies such as power outages, backup power is stored, and the stored power is released to suppress the maximum power consumption (so-called peak shifting), and surplus power is supplied to the power market (selling electricity). Various purposes such as these can be exemplified. Note that the "value" mentioned here does not refer only to the monetary price, but also includes a value using the importance to the consumer as an index. Also, the "predetermined period" includes a very short time such as one second after the present time.

[0014] Also, the "content of the combination of the supply and cutoff of electric power to the load, the power transfer with the commercial power system, and the storage and release of energy to the electric device" can also be said to be information related to the control of electric power, such as "when", "where", "how much", "from where", electric power is used, in the system. For example, when the purpose is peak shifting, charging the battery from 0:00 to 5:00 and discharging the power from the battery from 13:00 to 16:00 and supplying the power to the load can be exemplified as a combination. Also, when there is sufficient margin for the power consumed by the load with respect to the peak, the discharged power can be supplied to the commercial power system (selling electricity to the market) as the content of the combination.

[0015] Note that the procurement of electric power into the system does not necessarily rely only on the commercial power system. For example, electric power may be procured from various self-generation facilities such as solar power generation devices.

[0016] According to such a configuration, a power supply system capable of maximizing the value to the consumer can be provided.

[0017] Further, the power supply system may further include storage means for storing a value table including information on the value related to at least any one of the supply and cutoff of power to the load corresponding to the predetermined purpose, the power transfer with the commercial power system, and the accumulation and discharge of energy to the electric device, and the value information acquisition means may acquire the value information from the value table.

[0018] According to such a method, it is possible to easily acquire value information and reduce the burden on the value information acquisition means.

[0019] Further, the power supply system may further include value table change means for changing the content of the value table. For example, since it is conceivable that value information changes at any time such as the selling price of electricity to the power market, or the value criteria of consumers for a predetermined purpose change, by providing means for changing the content of the table accordingly, it becomes possible to appropriately maximize the value for consumers.

[0020] Also, the start period of the predetermined period may be any future point in time. That is, what the control content determination means determines may be the combination content that maximizes the value during the predetermined period including the current time, or may be the combination content that maximizes the value in a predetermined future period (for example, between 00:00 and 24:00 the next day). Needless to say, when the control content determination means determines the combination for a future predetermined period, the control means performs control based on the content during the future predetermined period.

[0021] In this way, by determining the combination for an arbitrary future period in advance, it becomes possible to perform planned operation.

[0022] Further, as the electric device capable of accumulating the energy, at least a storage battery may be included. Note that the storage battery may be one that can be used separately from the power supply system, for example, like the storage battery mounted on an electric vehicle (EV). That is, the power supply system according to the present invention connects the drive storage battery mounted on an EV or the like to the electric system of the facility and enables bidirectional power supply, such as a V2H (Vehicle to Home) system, or may also serve as a V2L (Vehicle to Load) system capable of supplying power to household electrical appliances from the in-vehicle storage battery. By adopting such a configuration with a storage battery, it is possible to maximize the value enjoyed by the consumer more effectively than accumulating other types of energy.

[0023] Further, the power supply system may further include a power generation facility. The power generation facility here includes, in addition to renewable energy power generation devices such as solar power generation devices and wind power generation devices, so-called fuel cells and the like. Applying the present invention to a power supply system having such a configuration is suitable because it becomes possible to more effectively utilize the generated power.

[0024] Further, the present invention is a management device for a power supply system that is connected to a commercial power system and supplies power to a load including an electric device capable of accumulating energy, value information acquisition means for acquiring information on the value related to at least any one of supply and cut-off of power to the load, power exchange with the commercial power system, and accumulation and discharge of energy to the electric device, corresponding to a predetermined purpose; control content determination means for determining the content of a combination of supply and cut-off of power to the load, power exchange with the commercial power system, and accumulation and discharge of energy to the electric device, such that the total value in a predetermined period is maximized, based on the value information; Based on the content of the combination determined by the control content determination means, control means for controlling the supply and cutoff of power to the load, the power transfer with the commercial power system, and the accumulation and discharge of energy to and from the electrical device, can also be regarded as a management device having the same.

[0025] Also, the present invention is A management method for a power supply system that supplies power to a load including an electrical device that can accumulate energy and is connected to a commercial power system, A value information acquisition step of acquiring information on the value related to at least any one of the supply and cutoff of power to the load, the power transfer with the commercial power system, and the accumulation and discharge of energy to and from the electrical device, corresponding to a predetermined purpose; A control content determination step of determining the content of a combination of the supply and cutoff of power to the load, the power transfer with the commercial power system, and the accumulation and discharge of energy to and from the electrical device, such that the total value in a predetermined period becomes maximum based on the value information; Based on the content of the combination determined in the control content step, a control step of controlling the supply and cutoff of power to the load, the power transfer with the commercial power system, and the accumulation and discharge of energy to and from the electrical device, can also be regarded as a management method having the same.

[0026] Also, the present invention can be regarded as a program for causing an information processing device to execute the above method, and a computer-readable recording medium on which such a program is non-temporarily recorded.

[0027] Also, each of the above configurations and processes can be combined with each other to constitute the present invention as long as no technical contradiction occurs.

Advantages of the Invention

[0028] According to the present invention, it is possible to provide a technology capable of maximizing the value enjoyed by consumers in a power supply system.

Brief Description of the Drawings

[0029]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Mode for Carrying Out the Invention

[0030] Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.

[0031] <Application Example> The present invention can be applied, for example, as a management device 10 of a power supply system as shown in FIG. 1. The power supply system to be managed by the management device 10 includes a plurality of electrical devices (loads) and a storage battery (not shown), and is connected to a commercial power system. Although not shown, the management device 10 is configured by a general-purpose computer system including a CPU (processor), a main storage device (memory), an auxiliary storage device (such as a hard disk), an input device (such as a keyboard, a mouse, a controller, a touch panel), an output device (such as a display, a printer, a speaker), and the like.

[0032] As shown in FIG. 1, the management device 10 includes function modules such as a value information acquisition unit 11, a control content determination unit 12, a power control unit 13, a storage unit 14, and a value table information update unit 15. These function modules may be realized, for example, by the CPU reading and executing a program stored in a storage device.

[0033] The value information acquisition unit 11 acquires value information obtained by controlling power corresponding to power utilization menus for predetermined purposes such as peak shift, day-night shift, and imbalance avoidance from a value information table described later. The power control referred to here indicates the power transfer with the commercial power system, the supply and cutoff of power to each load, and the charge and discharge of the storage battery.

[0034] Based on the value information acquired by the value information acquisition unit 11, the control content determination unit 12 determines the combination content of control that maximizes the total value obtained by the above-described power control during a predetermined period (for example, from the current time to 1 hour, from 00:00 to 24:00 tomorrow, etc.). Regarding the combination of controls referred to here, for example, when the peak shift is the purpose, charging the storage battery from 0:00 to 5:00 and discharging power from the storage battery from 13:00 to 16:00 to supply power to the load can be exemplified.

[0035] The power control unit 13 executes a process of controlling each component in the system so as to conduct power transfer with the commercial power grid, supply and cut off power to each load, and charge and discharge the storage battery according to the combination content of the control determined by the control content determination unit 12.

[0036] The storage unit 14 is composed of a storage device (not shown), and stores various kinds of information including a value table. The value table is a table of a combination of the above-mentioned power utilization menus for predetermined purposes and the value information associated therewith. Note that the storage unit 14 can store a plurality of value tables, for example, tables by time zone, by season, and by application.

[0037] FIG. 2 shows an example of the value table according to this application example. As shown in FIG. 2, the value table is composed of a menu corresponding to the purpose of power utilization (power supply during power outage, peak shifting, day-night shift, regulation power market, etc.) and the value information (C1, C2, C3, C4 ···) respectively.

[0038] The "value" in the value table may be a monetary value (price), or may be a numerical value obtained by quantifying the importance to the customer. In the example of FIG. 2, the numerical value representing the value is not a price, but is shown as a value such as the descending order of the importance (that is, the one with the greatest value is shown as the smallest numerical value).

[0039] On the other hand, when the value is displayed as a price, for example, the monetary value (price) such as suppressing the contract power by peak shifting can be calculated relatively easily, but the monetary value such as ensuring the power supply during a power outage cannot be uniquely calculated. Therefore, for example, based on the menu for which the price can be easily calculated, the relative price for other menus may be calculated and displayed. Also, since the value of ensuring the power supply during a power outage can be said to be relatively higher in a situation where the possibility of natural disasters is considered to be high compared to normal times, the value may be set taking such circumstances into account.

[0040] The value table information update unit 15 updates the information in the value table according to the instructions of the customer or according to a predetermined rule. Along with this, the value of each menu in the value table (a predicted value depending on the content of the menu) is calculated. For example, regarding the value of the "Power sales to the regulation market" menu, since the power sales price fluctuates according to the supply and demand relationship in the market, it is necessary to vary it accordingly. Also, there may be a need to change what items are set as the power utilization menu depending on the situation. For this reason, the information in the value table is appropriately updated by the value table information update unit 15.

[0041] Figure 3 is a diagram for explaining changes in the content of the value table. Figure 3A shows the content of the value table in a certain time period of a day, Figure 3B shows the content of the value table in another time period, and Figure 3C shows the content of the value table in yet another time period. For example, from the value table in Figure 3A, it can be seen that in that time period, peak shifting is the menu with the highest value, and the values decrease in the order of power sales to the regulation market, day-night shift, and imbalance avoidance. Furthermore, regarding the menu of ensuring power supply during power outages, it shows that it has no particular value for the customer in that time period.

[0042] On the other hand, looking at the value table in Figure 3B, it can be seen that in that time period, the menus of ensuring power supply during power outages and peak shifting have no value, and the one with the highest value is power sales to the regulation market. Furthermore, from the value table in Figure 3C, it can be seen that in that time period, the only menu with value is imbalance avoidance. Thus, the content of the value table is updated moment by moment by the value table information update unit 15 based on the time period, weather conditions, supply and demand balance in the market, etc. Note that information such as these time periods, weather conditions, and supply and demand balance in the market may be obtained from an external network via a communication unit not shown in the figure.

[0043] Next, based on FIG. 4, the flow of the power control process in the management device 10 will be described. FIG. 4 is a flowchart showing the flow of the control process by the management device 10 according to this application example. First, the management device 10, triggered by a customer's instruction, the arrival of a predetermined timing, etc., acquires the value information for each menu from the value table by the value information acquisition unit 11 (S101). Then, based on the information acquired in step S101, the control content determination unit 12 determines the control content for which the total value obtained by the above-described power control is maximized during a predetermined period (S102). Here, for example, taking the predetermined period as 1 second after the current time, that is, determining the control content for executing the menu with the highest value at the current time.

[0044] FIG. 5 is a flowchart showing the flow of the subroutine process of step S102. As shown in FIG. 5, the control content determination unit 12 first compares the values for each menu (S201) and selects the menu with the highest value (S202). Then, it determines whether there are multiple menus with the maximum value (S203). In step S203, if it is determined that there is only one menu with the maximum value, the combination of controls for realizing the menu is determined as the control content (S204), and the flow of the subroutine ends. On the other hand, in step S203, if it is determined that there are multiple menus with the maximum value, the process proceeds to step S205, and based on a predetermined rule (ranking according to the customer's preference, round-robin, fixed order, etc.), the combination of controls for realizing one menu is determined as the control content (S205), and the flow of the subroutine ends. Note that the combination of controls mentioned here refers to the combination of power supply and cut-off to each load, power transfer with the commercial power system, and charge and discharge of the storage battery.

[0045] Returning to the flow of FIG. 4, after step S102, the power control unit 13 controls each component in the system, such as loads and the storage battery, so as to perform power transfer with the commercial power system, supply and cut off power to each load, and charge and discharge the storage battery according to the content of the control combination determined in step S102 (S103), and a series of flows are once terminated. Note that the management device 10 may be configured to repeatedly execute the flow at any time.

[0046] As described above, according to the management device 10 according to the present application example, in the power supply system, power can be controlled so as to maximize the value enjoyed by the consumer.

[0047] Hereinafter, more detailed examples of the embodiments for carrying out the present invention will be described. However, dimensions, materials, shapes, relative arrangements, etc. of the components described in this embodiment are not intended to limit the scope of the present invention only to those, unless otherwise specified.

[0048] <Embodiment 1> FIG. 6 is a schematic diagram of a power supply system 1 including the management device 10 according to the present embodiment. The power supply system 1 includes a management device 10, a storage battery 20 and a BMU (Battery Management Unit) 21, a power conditioner 30, a distribution board 40, a plurality of loads 50 (electrical devices), and a watt-hour meter 60, and is connected to a commercial power system 90.

[0049] The management device 10 is a computer including a CPU, a RAM, a ROM, various input / output units, etc., and is communicably connected to the BMU 21, the power conditioner 30, and the watt-hour meter 60. Further, the management device 10 includes, as functional modules, a value information acquisition unit 11, a control content determination unit 12, a power control unit 13, a storage unit 14, and a value table information update unit 15. Since each functional module is the same as that described in the application example, detailed description thereof will be omitted.

[0050] The storage battery 20 is a known secondary battery such as a lithium-ion battery, and is managed by the BMU 21 so that it can be operated safely. The BMU 21 monitors the temperature, voltage, etc. of the storage battery 20, controls the charge and discharge of the storage battery 20 based on information from the management device 10, and measures the charge and discharge power and transmits it to the management device 10.

[0051] The power conditioner 30 functions as a bidirectional DC / AC inverter, converts the DC power sent from the storage battery 20 into AC and transmits it to the distribution board 40, and converts the AC power supplied from the commercial power system 90 into DC and transmits it to the storage battery 20. The distribution board 40 distributes the power transmitted from the commercial power system 90 and the power conditioner 30 to each load.

[0052] The electricity meter 60 measures the power transmitted from the commercial power system 90 (i.e., the purchased electricity power) and the power supplied to the commercial power system 90, and transmits the measured values to the management device 10 etc. to.

[0053] In addition, the flow of the specific control process performed by the management device 10 in this embodiment can also be the same as the flow of the process described in the application example. That is, based on the value of the menu at the current time (including the time zone), the control content that maximizes the value of the consumer at each time is determined in real time, and it is also possible to perform power control within the system. However, the management device 10 is not limited to such a processing method, and it is also possible to perform control so that the value of the consumer is maximized in a predetermined period starting from an arbitrary future point in time. Hereinafter, the flow of such a control process will be described. Even when performing such control, the basic processing flow (i.e., steps S101 to S103) performed by the management device 10 is the same as the processing of the application example, but the processing of the subroutine in step S102 is different.

[0054] FIG. 7 is a flowchart showing the flow of control processing by the management device 10 according to the present embodiment. As shown in FIG. 7, the management device 10 first uses the value table information update unit 15 triggered by a customer's instruction, the arrival of a predetermined timing, etc., to calculate (estimate) the value of each menu for each time period in the value table for a future predetermined period (for example, 00:00 to 24:00 the next day), and updates the content of the value table (step S301). The value table may be stored in the storage unit 14 in advance for each time period, and these contents may be updated.

[0055] Next, the value information acquisition unit 11 acquires information on the value of each menu for each time period from the value table (S302). Then, based on the information acquired by the control content determination unit 12 in step S302, it determines a combination of controls that maximizes the total value in a future predetermined period (S303). For example, on the premise that the storage battery 20 is fully charged at a low electricity rate at night, calculate how to utilize (discharge) the power stored in the storage battery 20 in what combination of menus so that the total value after 24 hours is maximized, and determine the content of the combination of controls required to execute the combination of the menus.

[0056] Then, waiting for the arrival of the start period of a future predetermined period, the power control unit 13 executes control processing for supplying and interrupting power to each load 50, power transfer with the commercial power system 90, and charging and discharging of the storage battery 20 from the start period to the end period according to the content determined in step S303 (S304), and ends a series of processing.

[0057] According to the power supply system 1 as described above, it is possible to plan to utilize power to maximize the value of the customer by determining in advance a combination for an arbitrary future period, and by appropriately reflecting the current value of power according to the situation and performing control processing, it is possible to maximize the value of the customer while also coping with fluctuations in the value of power.

[0058] <Embodiment 2> In the power supply system 1 of the above-described Embodiment 1, the procurement of the power to be utilized relied only on the commercial power system 90. However, the present invention can also be applied to a system that combines self-generation with this.

[0059] FIG. 8 is a block diagram showing an outline of the power supply system 2 according to the present embodiment. In the power supply system 2 according to the present embodiment, the same components as those in the power supply system 1 are denoted by the same reference numerals, and detailed descriptions thereof are omitted.

[0060] As shown in FIG. 8, the power supply system 2 according to the present embodiment includes a solar panel 270 and is configured to perform solar power generation. Along with this, the power distribution to the load is also divided into a distribution via the general load distribution board 240 and a distribution to the specific load 250 via the specific load distribution board 241. It is divided into systems.

[0061] Even in the power supply system 2 as described above, the power control process can be performed in substantially the same manner as the control process according to the above application example and Embodiment 1. By having the configuration including the solar panel 270, the menu for power utilization can be diversified. FIG. 9 shows an example of the value table stored in the storage unit 14 in the present embodiment.

[0062] As shown in FIG. 9, by having a power generation facility, it becomes possible to adopt menus such as self-delivery, delivery to others, environmental value (relative), and environmental value (market). That is, with a configuration such as the power supply system 2 of the present embodiment, the options for maximizing the value become diverse, and it becomes possible to more flexibly determine the control content for maximizing the value of the customer.

[0063] <Others> The above examples are merely illustrative of the present invention, and the present invention is not limited to the above specific forms. The present invention can be variously modified within the scope of its technical idea. For example, in the above examples, the power supply system had one storage battery, but a system configuration including a plurality of storage batteries may also be used.

[0064] Also, in each of the above examples, the electrical device capable of accumulating energy was a storage battery, but a configuration including a device for accumulating thermal energy other than this (for example, an electric water heater) may also be used. Further, the power generation facility in Embodiment 2 is not limited to a solar power generation facility, and may be a power generation facility using other renewable energy or a fuel cell.

[0065] Also, in each of the above examples, the description was centered on the value of the discharge of the electric power stored in the storage battery, but in addition to this, values obtained only by controlling the supply and cutoff of electric power to each load, such as so-called peak cutting, may also be included.

[0066] <Supplementary Note> One aspect of the present invention is A power supply system (1) that is connected to a commercial power system (90) and supplies power to a load (50) including an electrical device (20) capable of accumulating energy, Value information acquisition means (11) for acquiring information on the value related to at least any one of the supply and cutoff of power to the load, the power transfer with the commercial power system, and the accumulation and release of energy to the electrical device, corresponding to a predetermined purpose; Based on the value information, control content determination means (12) for determining the content of the combination of the supply and cutoff of power to the load, the power transfer with the commercial power system, and the accumulation and release of energy to the electrical device, such that the total value in a predetermined period is maximized; A power supply system having control means (13) for controlling the supply and cutoff of power to the load, the power transfer with the commercial power system, and the accumulation and release of energy to the electrical device based on the content of the combination determined by the control content determination means.

[0067] Another aspect of the present invention is A management device (10) of a power supply system (1) that is connected to a commercial power system (90) and supplies power to a load (50) including an electrical device (20) capable of accumulating energy, Value information acquisition means (11) for acquiring information on the value related to at least any one of the supply and cutoff of power to the load, the power transfer with the commercial power system, and the storage and release of energy to the electric device corresponding to a predetermined purpose; Based on the information on the value, the load where the total value in a predetermined period is maximized Control content determination means (12) for determining the content of the combination of the supply and cutoff of power to the load, the power transfer with the commercial power system, and the storage and release of energy to the electric device; Control means (13) for controlling the supply and cutoff of power to the load, the power transfer with the commercial power system, and the storage and release of energy to the electric device based on the content of the combination determined by the control content determination means, which is a management device.

[0068] Moreover, another aspect of the present invention is A management method for a power supply system that supplies power to a load including an electric device that can store energy in connection with a commercial power system, comprising: A value information acquisition step (S101, S302) for acquiring information on the value related to at least any one of the supply and cutoff of power to the load, the power transfer with the commercial power system, and the storage and release of energy to the electric device corresponding to a predetermined purpose; A control content determination step (S102, S303) for determining the content of the combination of the supply and cutoff of power to the load, the power transfer with the commercial power system, and the storage and release of energy to the electric device based on the information on the value, where the total value in a predetermined period is maximized; A control step (S103, S304) for controlling the supply and cutoff of power to the load, the power transfer with the commercial power system, and the storage and release of energy to the electric device based on the content of the combination determined in the control content step, which is a management method.

Explanation of Signs

[0069] 1, 2... Power supply system 10... Management device 20... Storage battery 30... Power conditioner 40... Distribution board 50, 250... Load 60... Electricity meter 90... Commercial power system 240... General load distribution board 241... Specific load distribution board 270... Solar panel

Claims

1. A power supply system for supplying power to a load including an electrical device capable of accumulating energy and connected to a commercial power system, value information acquisition means for acquiring information on the value related to at least any one of supply and cut-off of power to the load corresponding to a predetermined purpose, power transfer with the commercial power system, and accumulation and release of energy to the electrical device; control content determination means for determining the content of a combination of supply and cut-off of power to the load, power transfer with the commercial power system, and accumulation and release of energy to the electrical device, based on which the total value in a predetermined period becomes maximum; control means for controlling supply and cut-off of power to the load, power transfer with the commercial power system, and accumulation and release of energy to the electrical device, based on the content of the combination determined by the control content determination means; and storage means for storing a value table having the predetermined purpose and the information on the value corresponding thereto. The value information acquisition means acquires the information on the value from the value table, The value table includes at least ensuring power supply during a power outage as the predetermined purpose, a power supply system.

2. Further comprising value table change means for changing the content of the value table, The power supply system according to claim 1, characterized in that.

3. The start period of the predetermined period is an arbitrary point in the future, The power supply system according to claim 1 or 2, characterized in that.

4. The electrical device capable of accumulating energy includes at least a storage battery, The power supply system according to any one of claims 1 to 3, characterized in that.

5. The power supply system according to any one of claims 1 to 4, further comprising a power generation facility.

6. A power supply system that is connected to a commercial power system and supplies power to a load including an electrical device capable of storing energy. A management device for a power supply system, Value information acquisition means for acquiring information on the value related to at least any one of the supply and cutoff of power to the load, the transfer of power with the commercial power system, and the storage and release of energy to the electrical device, corresponding to a predetermined purpose; Control content determination means for determining the content of a combination of the supply and cutoff of power to the load, the transfer of power with the commercial power system, and the storage and release of energy to the electrical device, based on the information on the value, such that the total value in a predetermined period becomes maximum; Control means for controlling the supply and cutoff of power to the load, the transfer of power with the commercial power system, and the storage and release of energy to the electrical device, based on the content of the combination determined by the control content determination means; Storage means for storing a value table including the predetermined purpose and the information on the value corresponding thereto, and having: The value information acquisition means acquires the information on the value from the value table, The value table includes at least ensuring power supply during a power outage as the predetermined purpose, a management device.

7. A management method for a power supply system that is connected to a commercial power system and supplies power to a load including an electrical device capable of storing energy, A value information acquisition step of acquiring information on the value related to at least any one of the supply and cutoff of power to the load, the transfer of power with the commercial power system, and the storage and release of energy to the electrical device, corresponding to a predetermined purpose; Based on the value information, a control content determination step for determining the content of a combination of power supply to and cut-off from the load, power transfer with the commercial power system, and energy storage in and release from the electrical device, such that the total value over a predetermined period is maximized; A control step for controlling power supply to and cut-off from the load, power transfer with the commercial power system, and energy storage in and release from the electrical device, based on the content of the combination determined in the control content determination step; and it has these steps. The power supply system has storage means for storing a table with the predetermined purpose and the value information corresponding thereto, and a value table including at least ensuring power supply during a power outage as the predetermined purpose is stored. In the value information acquisition step, the value information is acquired from the value table. A management method characterized by the above.

8. A program for causing a computer to execute each step of the management method according to Claim 7.

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