JP6131963B2 - Storage battery charge / discharge control device, storage battery charge / discharge control method, and storage battery charge / discharge control program - Google Patents

Description

  The present invention relates to a storage battery charge / discharge control device, a storage battery charge / discharge control method, and a storage battery charge / discharge control program.

  In recent years, lack of power supply capacity when a power plant is shut down due to an accident caused by a large-scale disaster has been regarded as a problem, and energy saving regulations have been reviewed in the direction of reducing peak power from total power. Therefore, in the future, customers will have storage batteries, and charge and discharge the storage batteries effectively, that is, by discharging the power charged in the storage battery during the peak period when there is little power demand, to reduce peak power The mechanism is expected to be important.

  A storage battery refers to a battery having a function of storing electric power and a function of using the stored electric power. For example, the storage battery includes not only a stationary storage battery in general but also a notebook PC equipped with an EV (Electric Vehicle) and a built-in battery. In addition, large-scale storage batteries have various problems in early introduction and dissemination to consumers, such as installation space, price, and safe operation. For this reason, demand for small-sized storage batteries such as stationary storage batteries for home use and batteries for EVs and notebook PCs is expected.

  In order to reduce the peak power by using a storage battery, a technique for centrally managing a plurality of storage batteries is proposed. According to this technology, for example, a control plan that defines charging / discharging of each storage battery for each time zone is generated, and each storage battery is controlled according to the charging / discharging control plan, thereby adjusting power demand. However, the storage battery possessed by the consumer is a reserve power storage battery for reserve power in case of a power failure, EV for moving fuel, notebook PC power supply for driving out when going out, etc. Has its original purpose of introduction. For this reason, it is necessary to generate a charge / discharge control plan that reduces peak power without conflicting with the original purpose of introduction.

  For example, as a mechanism using a storage battery, a first method for planning operation of a generator or a storage battery based on power demand prediction and reducing power generation cost on the supply side is disclosed (for example, Patent Documents 1 and 2). . Further, a second method for generating a near-optimal charge / discharge control plan in a short time by repeating generation of a temporary charge / discharge control plan and evaluation of the temporary charge / discharge control plan based on power demand prediction is disclosed. (For example, Patent Document 3).

Japanese Patent No. 4187620 Japanese Patent No. 4783246 Japanese Patent Application No. 2011-258271

  However, in the first method, it is assumed that there is a storage battery on the supply side, the consumer has a storage battery, and it is not assumed that the storage battery is used for purposes other than the reduction of peak power. For this reason, there is a possibility that the original introduction purpose cannot be satisfied, such as a case where the remaining capacity of the storage battery is insufficient at the time of a power failure and the power cannot be used, or the battery of the notebook PC is exhausted and the battery cannot be driven when going out. Moreover, since the plan which considered the some storage battery cannot be performed, the application to a lot of storage batteries is not easy.

  In the second method, a charge / discharge control plan is generated based only on the power demand prediction, the specifications of each storage battery, the current charge / discharge state and the remaining amount. For this reason, when the notebook PC is driven by a battery when going out, control as planned is not realized, and there arises a problem that peak power cannot be reduced or a reduction effect of peak power is reduced.

  An object of this invention is to provide the charging / discharging control apparatus of the storage battery which produces | generates the charging / discharging control plan which reduces peak electric power reliably, the charging / discharging control plan program of a storage battery, and the charging / discharging control method of a storage battery.

  A first aspect is a storage battery charge / discharge control device that provides a control service based on a charge / discharge control plan for one or more storage batteries, and includes a discharge state, an energized state, and a charge state of the storage battery. Charging / discharging state history generating means for generating a charging / discharging state history that is a history of charging, and controlling to the energized state or the charging state in the history of the charging / discharging control plan, wherein the discharging is performed in the charging / discharging state history Control constraint generating means for generating a control constraint for instructing discharge control for a target time zone section that is in a state, and the control of the control constraint in the target time zone section, and a time zone other than the target time zone section The section includes control plan generation means for generating the charge / discharge control plan having a peak power reduced and having control to any of the charge / discharge states.

  According to the first aspect, the peak power is reliably reduced.

It is a figure which shows an example of a structure of the charging / discharging control apparatus of the storage battery in this embodiment. It is an example figure of the block diagram of the charging / discharging control apparatus of the storage battery in this embodiment. It is a figure explaining reduction of electric power based on a charging / discharging control plan. It is a figure which shows an example of a charging / discharging state log | history. It is a figure which shows an example of a charging / discharging control plan. It is a figure showing the outline | summary of the charging / discharging control process of the storage battery in a 1st embodiment. It is a flowchart figure explaining the flow of the charging / discharging control process of a storage battery. It is an example of the specific example explaining the charging / discharging control processing in the present embodiment. It is a flowchart figure explaining the flow of the charging / discharging control process of the storage battery in a 2nd embodiment. It is an example of the specific example explaining the charging / discharging control processing in the present embodiment. It is a figure showing the outline | summary of the charging / discharging control process of the storage battery in a 4th embodiment. It is a flowchart figure explaining the flow of the charging / discharging control process of the storage battery in a 4th embodiment. It is a figure explaining the grouping process of the notebook PC in the example of a 4th embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the technical scope of the present invention is not limited to these embodiments, but extends to the matters described in the claims and equivalents thereof.

[Configuration of charge / discharge control device]
FIG. 1 is a diagram illustrating an example of a configuration of a storage battery charge / discharge control device 100 according to the present embodiment. The storage battery charge / discharge control device 100 in FIG. 1 is, for example, a computer and a server device installed in the company. The storage battery charge / discharge control device 100 includes, for example, a CPU (Central Processing Unit) 301, an input device 302 that receives data input from a user, and a monitor 303. In addition, the storage battery charge / discharge control device 100 includes a medium reading device 304 that reads a program or the like from a storage medium, an interface device 305 for connecting to another device, and a wireless communication device 306 for connecting to another device wirelessly. Have. In addition, the storage battery charge / discharge control device 100 includes a random access memory (RAM) 307 and a hard disk device 308 that temporarily store various types of information. Each device 301 to 308 is connected via a bus 309.

  The hard disk device 308 stores, for example, a program for performing charge / discharge control processing of the storage battery in the present embodiment. The hard disk device 308 stores various data for realizing a storage battery charge / discharge control program. The CPU 301 reads a program stored in the hard disk device 308 and develops it in the RAM 307 to realize a storage battery charge / discharge control process.

  Note that the program for performing charge / discharge control processing of the storage battery is not necessarily stored in the hard disk device 308. For example, the CPU 301 may read and execute a program stored in a computer-readable recording medium. As the computer-readable recording medium, for example, a portable recording medium such as a CD-ROM, a DVD disk, and a USB memory, a semiconductor memory such as a flash memory, a hard disk drive, and the like are supported. Alternatively, the program may be stored in a device connected to a public line, the Internet, a LAN (Local Area Network), a WAN (Wide Area Network), or the like, and the CPU 301 may read and execute the program therefrom. .

  As shown in FIG. 1, the storage battery charge / discharge control device 100 includes, for example, a distribution board 20, notebook PCs (Personal Computers) 30 a, 30 b, 30 c (hereinafter, notebook PC 30), and an in-house LAN (Local Area Network). 10 is connected. The notebook PC 30 is, for example, a notebook personal computer used by users in the company. In this example, the storage battery indicates a battery of a notebook PC. The storage battery charge / discharge control device 100 according to the present embodiment generates a charge / discharge control plan that defines charge / discharge states according to the time zones of the batteries of the plurality of notebook PCs. Further, for example, a client application that controls charging / discharging of the battery is installed in the notebook PC 30. The notebook PC 30 receives, for example, a charge / discharge state control rule corresponding to its own time zone from the storage battery charge / discharge control device 100 and switches the state of the battery.

  As the in-house LAN 10, for example, any type of communication network such as a wired LAN or a wireless LAN may be adopted and connected to another network such as the Internet or a LAN. In addition, for example, the distribution board 20 supplies power to the notebook PCs 30a, 30b, and 30c through the power line 40. Moreover, in FIG. 1, although the case where three notebook PC30a, 30b, 30c was connected to the charging / discharging control apparatus 100 of the storage battery was shown, it is not limited to this example. An arbitrary number of notebook PCs may be connected to the storage battery charge / discharge control device 100.

[Block diagram of charge / discharge control device]
FIG. 2 is a diagram showing an example of a block diagram of the storage battery charge / discharge control device 100 according to the present embodiment. 2 includes, for example, a communication control unit 110, a storage unit 120, and a control unit 130. The communication control unit 110 controls communication related to various information transmitted and received between the distribution board 20 and the notebook PC 30 in FIG. The communication control unit 110 is, for example, a network interface card (NIC).

  The control unit 130 includes, for example, a charge / discharge state history generation unit 131, a control constraint generation unit 132, a charge / discharge control plan generation unit 133, a charge / discharge control plan storage unit 134, and a charge / discharge state control unit 135. The function of the control unit 130 may be realized, for example, by the CPU 301 in FIG. 1 executing a program for performing charge / discharge control processing of the storage battery, or an ASIC (Application Specific Integrated Circuit) or FPGA (Field Programmable Gate Array). ) Or the like.

  The charge / discharge state history generating unit 131 of the control unit 130 acquires information on the storage battery and generates a charge / discharge state history ST. For example, the charge / discharge state history generation unit 131 acquires the charge / discharge state of the battery from the notebook PC 30 connected to the in-house LAN 10 and generates the charge / discharge state history ST. The control constraint generator 132 generates a control constraint based on the charge / discharge state history ST and the charge / discharge control plan history PLR. The control constraint indicates a constraint that instructs in advance the control to the charge / discharge state of the target time zone section in the charge / discharge control plan. Details of the control constraint will be described later.

  Moreover, the charge / discharge control plan production | generation part 133 produces | generates the charge / discharge control plan which has control to the charge / discharge state of each notebook PC based on control restrictions. That is, the charging / discharging control plan generation unit 133 generates a charging / discharging control plan defined in the charging / discharging state corresponding to the control constraint for the time zone section having the control constraint. The charge / discharge control plan storage unit 134 stores the generated charge / discharge control plan as a history PLR of the charge / discharge control plan. Further, the charge / discharge state control unit 135 controls the charge / discharge of the battery of each notebook PC 30 based on the generated charge / discharge control plan.

  Moreover, the memory | storage part 120 of the charging / discharging control apparatus 100 of a storage battery has the log | history PLR of charge / discharge state log | history ST and the charge / discharge control plan, for example. The storage unit 120 corresponds to the RAM 307 and the hard disk device 308 in FIG. The storage unit 120 may be a semiconductor memory device such as a flash memory, or a storage device such as a hard disk or an optical disk.

[Charge / discharge status of storage battery]
Here, the state regarding charging / discharging of a storage battery is demonstrated. In the present embodiment, the battery of the notebook PC 30 is illustrated as a storage battery. In this example, the state relating to charge / discharge of the storage battery includes, for example, a discharge state BA, an energization state AC, and a charge state CH.

  The discharge state BA indicates a state in which the built-in battery of the notebook PC that is a storage battery is discharged and the notebook PC is driven by a battery. In the discharge state BA, power consumption from an AC (Alternating Current) power supply does not occur, but the remaining battery capacity decreases with time. The energization state AC indicates a state in which the notebook PC is driven by an AC power source without charging and discharging the battery. In the energized state AC, the remaining battery level does not change over time. The charging state CH indicates a state where the battery is charged and the notebook PC is driven by an AC power source. In the charging state CH, the power consumption from the AC power source is higher than that in the energizing state AC for charging. Further, in the charging state CH, the remaining battery capacity increases with time.

  Thus, in the present embodiment, the charge / discharge state includes the discharge state BA, the energization state AC, and the charge state CH. The storage battery charge / discharge control device 100 generates a charge / discharge control plan that defines the charge / discharge state of the device having each storage battery, and controls the storage battery based on the charge / discharge control plan to reduce peak power.

[Reduction of peak power]
FIG. 3 is a diagram for explaining the reduction of peak power based on the storage battery charge / discharge control device 100 according to the present embodiment. The horizontal axis of the figure shows each time zone in one day, and the vertical axis shows the power consumption value kW. Moreover, the bar graph G2 of the figure shows the transition of the power consumption value when the storage battery is controlled based on the charge / discharge control plan, and the line graph G1 shows the transition of the power consumption value when not based on the charge / discharge control plan. Represent.

  In this example, the power consumption value is, for example, the sum of power consumption values in a predetermined range such as an office such as a department, a building such as a company, or the entire region. The power consumption value includes power consumption by devices other than the storage battery in addition to the storage battery. Therefore, the power consumption value indicates, for example, the total amount of the energization state AC, the power required for the charge state CH of one or more notebook PCs to be controlled, and the power required for other than the notebook PCs to be controlled. Moreover, a power consumption value shows the electric power value which measured the electric power supplied from the distribution board 20 (FIG. 1), for example. The peak power is the maximum power consumption among the power consumption per unit time. In addition, the time when power consumption becomes the maximum is the peak time.

  According to the line graph G1 of FIG. 3, when it is not based on the charge / discharge control plan, the power transition is not stable, and the peak power is increased. On the other hand, according to the bar graph G2, when the charge / discharge control plan is used, the power transition is stable, and it is possible to reduce the planned peak power. The storage battery charge / discharge control device 100 controls the charge / discharge state of the storage battery based on the charge / discharge control plan, and reduces the power consumption by the storage battery, thereby reducing the peak power and the supplied power for each hour. Reduce variation. That is, by adjusting the power consumption by the storage battery based on the charge / discharge control plan, the peak power including the power consumption by devices other than the storage battery is reduced. In addition, since the transition tendency of power consumption differs depending on the day of the week and the time, a plurality of patterns of charge / discharge control plans may be generated corresponding to the day of the week and the time, for example.

  Here, before explaining the generation process of the charge / discharge control plan, an example of the charge / discharge state history and the charge / discharge control plan will be described.

[Charge / discharge status history]
FIG. 4 is a diagram illustrating an example of the charge / discharge state history ST. The charge / discharge state history ST indicates a state history related to charge / discharge of the storage battery to be controlled. The charge / discharge state history ST of FIG. 11 is a history of charge / discharge states for each time zone segment every 30 minutes for 2012/9/18 to 9/21 for notebook PC1, which is one of notebook PCs 30 to be controlled. Have In the example shown in the figure, each time zone section corresponds to 30 minutes, but may correspond to a period of 10 minutes, 1 hour, or the like. According to the charging / discharging state history ST of FIG. 9, the notebook PC 1 is 2012/9/20, 9: 00 to 11: 00 and 14:30 to 16:00 are the discharging state BA, 12: 00 to 13: 00, 17:30 to 18:00 indicate the charging state CH, and the other time zones indicate the energization state AC.

[Charge / discharge control plan]
FIG. 5 is a diagram illustrating an example of the charge / discharge control plan PL. The charge / discharge control plan PL in the figure defines the charge / discharge state every 30 minutes for each of the notebooks PC1 to PC6 to be controlled in 2012/9/21, for example. In this example, the charge / discharge control plan PL has a discharge state BA, an energization state AC, and a charge state CH.

  Specifically, according to the charge / discharge control plan PL of FIG. 5, the discharge state BA is specified for the notebook PC 1 from 9:00 to 11:00 and from 14:30 to 16:00. Further, for the notebook PC 1, the charging state CH is defined for 12: 0 to 13:30 and 17: 0 to 18:00, and the energization state AC is defined for other time zones. Based on the charge / discharge control plan PL shown in FIG. 9, the notebook PC 1 enters the discharge state BA for 9: 00 to 11: 00 and 14: 30 to 16: 00, 12: 00 to 13:30, 17: 00 The charging state is controlled at 18:00, and the energization state AC is controlled at other times.

  However, the control of the charge / discharge state of the notebook PC 1 may not be performed according to the generated charge / discharge control plan PL. For example, even when the energization state AC or the charge state CH is defined in the charge / discharge control plan PL, there is a case where it is necessary to be battery-driven (become the discharge state BA) for a business trip or a meeting. In such a case, the charge / discharge state of the notebook PC 1 is not controlled as the charge / discharge control plan PL. As described above, a situation in which the control is not performed according to the charge / discharge control plan PL may occur, and the peak power may not be reduced as planned.

[First Embodiment]
Therefore, the storage battery charge / discharge control apparatus 100 according to the present embodiment is a control to the energized state AC or the charge state CH in the charge / discharge control plan history PLR, and the charge / discharge state history ST is in the discharge state BA. A control constraint for instructing discharge control is generated for the time zone that was Then, the storage battery charge / discharge control device 100 has control restriction control in the target time zone segment, and the peak power is reduced in the time zone segment other than the target time zone segment, and control to any of the charge / discharge states is performed. Is generated.

  In this way, the storage battery charge / discharge control device 100 detects a time zone segment in which the notebook PC is likely to be battery-driven (in the discharge state BA), for example, by a meeting or going out, and the time A control restriction (discharge restriction) BA-only to the discharge state BA is generated in the band section. Then, the storage battery charge / discharge control device 100 generates a charge / discharge control plan PL having a restriction indicating the discharge state BA, that is, the discharge state BA for the time zone in which the discharge restriction BA-only is generated. To do. That is, the control is performed in accordance with the charge / discharge control plan PL, but the time zone section that is not controlled as planned and is in the discharge state BA is controlled in advance to the discharge state BA in the charge / discharge control plan PL. Stipulated in Thereby, the certainty that the charge / discharge state of the storage battery is controlled as planned in the charge / discharge control plan PL is increased, and the peak power is more reliably reduced.

[Control constraints]
In the charge / discharge control plan PL of FIG. 5, in the time zone section including the black square and in which the discharge state BA is defined, the discharge state BA is defined based on the control constraint (discharge constraint) BA-only to the discharge state BA. Indicates the time zone classification. As described above, the discharge restriction BA-only is discharged in the charge / discharge state history ST in spite of being defined in the charge / discharge control plan history PLR other than the discharge state BA (energized state AC or charge state CH). It is given to the time zone classification that is in state BA. As described above, in the charge / discharge control plan PL, the discharge state BA is always defined in the time zone division to which the discharge restriction BA-only is given.

  Then, the outline | summary of the process of the charging / discharging control apparatus 100 of the storage battery in this Embodiment is demonstrated.

[Process overview]
FIG. 6 is a diagram illustrating an outline of the processing of the storage battery charge / discharge control device 100 according to the first embodiment. The processing shown in the figure is repeatedly performed, for example, at a predetermined number of days and at a predetermined time interval. First, the charge / discharge state history generating unit 131 acquires the charge / discharge state of each notebook PC and generates the charge / discharge state history ST. Subsequently, the control constraint generation unit 132 acquires the charge / discharge state history ST and the charge / discharge control plan history PLR from the database. Then, the control constraint generation unit 132 extracts the time zone section that was in the discharge state BA in the charge / discharge state history ST in spite of not being in the discharge state BA in the charge / discharge control plan history PLR, and discharge constraint BA-only Is generated.

  Subsequently, the charge / discharge control plan generation unit 133 has control of the control constraint in the target time zone, and the peak power is reduced in the time zone other than the target time zone, and the charge / discharge state is changed to any of the charge / discharge states. A charge / discharge control plan PL having control is generated. That is, for the time period in which the discharge restriction BA-only is given, the charge / discharge control plan PL in which the discharge state BA is defined is generated. Thereby, it is avoided that the charge / discharge control plan PL is not observed and the peak power is not reduced as planned. Further, the charge / discharge control plan storage unit 134 stores the generated charge / discharge control plan PL so that the presence or absence of the control constraint can be identified. This process will also be described later. And the charging / discharging state control part 135 controls a storage battery based on charging / discharging control plan PL.

  Then, the process of the charging / discharging control apparatus 100 of the storage battery in 1st Embodiment is demonstrated in detail based on a flowchart figure.

[Flowchart diagram]
FIG. 7 is a flowchart for explaining the flow of charge / discharge control processing of the storage battery in the present embodiment. The charge / discharge state history generation unit 131 acquires the charge / discharge state of each notebook PC 30 and generates the charge / discharge state history ST (S11). For example, the charging / discharging state history generating unit 131 acquires charging / discharging information of a period as necessary for the target storage battery immediately before the control plan generating unit 133 described later generates a control plan, and the charging / discharging state history ST Is generated. For example, the charge / discharge state history generating unit 131 generates the charge / discharge state history ST for yesterday before the start of work.

  Specifically, for example, for the notebook PC 30, the charge / discharge state history generation unit 131 acquires the charge / discharge state of the built-in battery using an OS (Operation System) or a battery driver API (Application Programming Interface). Alternatively, for example, the charge / discharge state history generation unit 131 may acquire only the remaining battery level and determine the charge / discharge state based on a change in the remaining amount. In this case, for example, it is determined that the battery state is a discharging state BA, if it is constant, an energizing state AC, and if it is increasing, it is a charging state CH. Alternatively, the charge / discharge state history generation unit 131 may measure the power consumption of the notebook PC 30 using an external measuring instrument and determine the charge / discharge state of the notebook PC 30 based on the power value. In this case, for example, if the measured electric power value is 0, it is determined as the discharging state BA, if it is less than the reference value, it is determined as the energized state AC, and if it is higher than the reference value, it is determined as the charging state CH.

  The storage battery charge / discharge control device 100 may periodically request the charge / discharge state from the notebook PC 30 and receive the charge / discharge state as a response thereto, or the notebook PC 30 may periodically change the charge / discharge state of the storage battery. You may notify to the discharge control apparatus 100. FIG. Alternatively, an external measuring instrument may transmit or notify the charge / discharge state of the notebook PC 30 to the storage battery charge / discharge control device 100 instead of the notebook PC 30.

  Subsequently, when the generation time of the charge / discharge control plan PL is reached (YES in S12), the control constraint generation unit 132 selects one PC from the PCs to be controlled (S13). The control constraint generation unit 132 acquires the charge / discharge state history ST and the charge / discharge control plan history PLR from the database (S14). For example, the control constraint generating unit 132 acquires yesterday's charge / discharge state history ST and yesterday's charge / discharge control plan history PLR. Subsequently, the control constraint generation unit 132 extracts a time zone that was in the discharge state BA in the charge / discharge state history ST although the discharge state BA is not defined in the charge / discharge control plan history PLR (S15). ). Then, the control constraint generation unit 132 generates a control constraint (discharge constraint) BA-only for instructing control to the discharge state BA for the extracted time zone (S16).

  Specifically, the control constraint generation unit 132 is a time zone in which the charge state / discharge state history ST was the discharge state BA in spite of the fact that the energized state AC and the charge state CH are defined in the charge / discharge control plan history PLR. In addition, a discharge restriction BA-only is generated. In addition, the control constraint generation unit 132 defines, for example, the discharge constraint BA-only in the charge / discharge control plan history PLR, and the discharge constraint BA for the time zone that was in the discharge state BA in the charge / discharge state history ST. -Only is generated. Thereby, the discharge restriction BA-only is generated again in the time zone when the discharge control is generated. Note that the control constraint generation unit 132 may generate the discharge constraint BA-only again for the time period in which the discharge constraint BA-only is defined in the charge / discharge control plan history PLR.

  Note that the control constraint generation unit 132 may generate a control constraint based on the charge / discharge state history ST and the charge / discharge control plan history PLR for a predetermined number of days. For example, the control constraint generation unit 132 may generate a control constraint based on the charge / discharge state history ST and the charge / discharge control plan history PLR for the previous three days. Alternatively, for example, the control constraint generation unit 132 may generate a control constraint for Monday based on a plurality of Monday charge / discharge state histories ST and a charge / discharge control plan history PLR.

  Further, the control constraint generation unit 132 may determine whether or not to generate the discharge constraint BA-only according to the appearance frequency and the appearance ratio of the discharge state BA in the charge / discharge state history ST. For example, the control constraint generation unit 132 generates a discharge constraint BA-only when 50% or more is the discharge state BA in a predetermined number of days in the charge / discharge state history ST. Alternatively, the control constraint generation unit 132 determines that the charge / discharge state history ST and the charge / discharge control plan history PLR are not in the discharge state BA in the charge / discharge control plan history PLR but in the charge / discharge state history ST. When both are equal to or more than twice the degree of being in the discharge state BA, the discharge restriction BA-only is generated.

  When the control constraint is generated for all the PCs to be controlled (YES in S17), the charge / discharge control plan generation unit 133 generates the charge / discharge control plan PL having the generated discharge constraint BA-only and reducing the peak power. (S18). Specifically, first, the charge / discharge control plan generation unit 133 defines the target time zone in which the discharge restriction BA-only is generated as the discharge state BA. Then, the charge / discharge control plan generation unit 133 takes into account that the target time zone is defined as the discharge state BA for the time zone in which the control constraint is not generated, so that the peak power is reduced. In each time zone of each PC, a charge / discharge control plan PL to which rules for the discharge state BA, energization state AC, and charge state CH are assigned is generated. A method for generating the charge / discharge control plan PL for reducing the peak power is described in Patent Document 3, for example.

  In step S18, for example, the charge / discharge control plan generation unit 133 has a control constraint control in a time zone having a control constraint, and a charge / discharge control plan that defines a charge / discharge state for a time zone having no control constraint. Then, a virtual charge / discharge control plan in which the state of some of the storage batteries is changed is generated. And the charging / discharging control plan production | generation part 133 simulates the power consumption for every time slot | zone using a virtual charging / discharging control plan, and peak power is reducing rather than the peak power in the charging / discharging control plan before a change. If so, the virtual charge / discharge control plan is set as the charge / discharge control plan. Then, for example, the charging / discharging control plan generation unit 133 generates a charging / discharging control plan by repeating the generation processing of the virtual charging / discharging control plan and the evaluation by simulation until a predetermined time elapses. As a result, a charge / discharge control plan having control of the control constraint in the time zone in which the control constraint is generated and the peak power is reduced and control to any of the charge / discharge states is generated in other time zones. The

  Subsequently, the charge / discharge control plan storage unit 134 stores the generated charge / discharge control plan PL while making it possible to identify the presence or absence of the discharge restriction BA-only (S19). When the storage battery is controlled according to the charge / discharge control plan PL, on the charge / discharge state history ST, whether the discharge state BA is controlled based on the discharge restriction BA-only, or on the plan that does not depend on the discharge restriction BA-only It is impossible to identify whether the discharge state BA is controlled in accordance with the provision of Therefore, in the charge / discharge control plan PL, the control constraint generator 132 generates the discharge constraint BA-only by indicating whether or not the control to the discharge state BA is based on the discharge constraint BA-only. It is possible to appropriately extract the time zone division to be performed. For example, the control constraint generator 132 extracts a time zone in which the discharge state BA based on the discharge constraint BA-only is defined in the history PLR of the charge / discharge control plan and was the discharge state BA in the charge / discharge status history ST, and A discharge restriction BA-only can be generated for the time zone.

  And the charging / discharging state control part 135 controls the storage battery of each PC based on the produced | generated charging / discharging control plan PL. Alternatively, the charge / discharge state control unit 135 transmits the charge / discharge control plan PL to each notebook PC, and each notebook PC controls the storage battery built in the own device based on the transmitted charge / discharge control plan PL. May be.

  Here, the processing of the storage battery charge / discharge control device 100 in the first embodiment will be described based on a specific example.

[Concrete example]
FIG. 8 is an example of a specific example for explaining the charge / discharge control processing in the present embodiment. In the morning of 2012/9/21, the figure shows a specific example in which the current day charge / discharge control plan PL1 is generated based on the charge / discharge state history ST1 for the past three days and the charge / discharge control plan history PLR1. Show. The figure also shows an example of a charge / discharge state history ST1, a charge / discharge control plan history PLR1, control constraints, and a newly generated charge / discharge control plan PL1.

  First, the charge / discharge state history ST1 of FIG. 8 shows the history of the charge / discharge state in 2012/9/18 to 9/20 for PC1. According to the charge / discharge state history ST1 of FIG. 9, for example, for 2012/9/20, 09:00 to 11:00, 14:30 to 16:00 are the discharge state BA, 12:00 to 13:00, 17: From 3 to 18:00, it is indicated that the charging state is CH, and the other time zone is the energization state AC. Moreover, the history PLR1 of the charge / discharge control plan of the figure shows the history of the charge / discharge plan in 2012/9/18 to 9/20 for PC1. According to the history PLR1 of the charge / discharge control plan in FIG. 14, for example, for 2012/9/20, 14:30 to 16:00 is the discharge state BA, 12: 0 to 13:00, and 17:30 to 18:00. It is shown that the charging state CH and other time zones are defined as the energization state AC.

  For example, the control constraint generation unit 132 compares the charge / discharge state history ST1 from 2012/9/18 to 9/21 with the history PLR1 of the charge / discharge control plan during the same period. The control constraint generation unit 132 is in the charge / discharge state history of the same time zone in spite of being the energized state AC or the charge state CH in the charge / discharge control plan history PLR1 in 2012/9 / 18-9 / 21. In ST1, a time zone section in charge / discharge state is extracted (S15). Then, the control constraint generation unit 132 assigns the discharge constraint BA-only to the extracted time zone section (S16). In this example, the energization state AC is specified in the history PLR1 of the charge / discharge control plan for 09/09 to 11:00 on 2012/9/18 and 09: 0 to 11:00 on 2012/9/20. Nevertheless, it is the discharge state BA in the charge / discharge state history ST. Therefore, the control constraint generation unit 132 sets the time period 09 which is a logical sum of 09:30 to 11:00 and 09:00 to 11:00 as the control constraint of 2012/9/21 shown in the table CT1 of FIG. : A discharge restriction BA-only is generated for 00 to 11:00.

  In addition, a table CT1a in the upper right of FIG. 8 shows the control restrictions of the notebook PCs 1 to PC6 that are the control targets. In the same manner as the notebook PC 1, control constraints are generated for other notebook PCs based on the charging / discharging state history ST1 and the charging / discharging control plan history PLR1 of the notebook PC. In this example, since the usage forms are different depending on the notebook PCs 1 to PC6, the time zone in which the discharge restriction BA-only is given in the table CT1a differs depending on each notebook PC1 to PC6. And the charging / discharging control plan production | generation part 133 has control of control restrictions in an object time slot | zone division, peak electric power becomes small in time slot divisions other than an object time slot | zone division, and control to any of charge / discharge states is carried out. Is generated (S18). As a result, the charge / discharge control plan PL1 shown in FIG. In the charge / discharge control plan PL1, the discharge state BA is defined for 09:00 to 11:00 to which the discharge restriction BA-only is given for the notebook PC1. The charge / discharge control plan PL1 of 2012/9/21 is stored as a history and is referred to when the next control constraint is generated.

  In the charge / discharge control plan PL1 of FIG. 8, a time zone section that includes a black square and defines the discharge state BA indicates a time zone section in which the discharge state BA is defined based on the discharge constraint BA-only. On the other hand, the time zone segment that defines the discharge state BA without enclosing the black square indicates the time zone segment in which the discharge state BA is defined without being based on the discharge constraint BA-only. As described above, the charge / discharge control plan PL1 in the present embodiment is generated so as to be identifiable as to whether or not the section in which the discharge control is defined is based on the discharge restriction BA-only. Thereby, the control constraint generation unit 132 can appropriately generate the discharge constraint BA-only.

[Release control constraints]
Further, the generated control constraint may be released. The time zone in which the discharge state BA is defined in the charge / discharge control plan PL1 based on the discharge constraint BA-only is always controlled to the discharge state BA regardless of whether or not the actual discharge state BA needs to be controlled. The Therefore, the control constraint generation unit 132 determines whether or not the control to the discharge state BA is necessary for the time zone in which the discharge constraint BA-only is generated. -Only release.

  Specifically, after generating the control constraint (S16 in FIG. 7), the control constraint generating unit 132 sets the time zone that was in the discharge state BA in the charge / discharge state history ST1, and the discharge constraint BA in the charge / discharge control plan history PLR1. The time zone to which -only is given is extracted, and the start time and end time of the time zone are compared. Then, the discharge restriction BA-only in the time zone in which the start time and the end time coincide is released. When the start time and the end time of the time zone in which the discharge state BA is in the charge / discharge state history ST1 and the time zone to which the discharge constraint BA-only is given in the history PLR1 of the charge / discharge control plan match, It is determined that it is the time zone in which the discharge state BA is controlled according to the history PLR1 of the discharge control plan. In this case, since it is controlled according to the history PLR1 of the charge / discharge control plan, it is considered that the discharge state BA is not reached due to the convenience of the user, and the discharge restriction BA-only for the time period is released.

  On the other hand, when the start time or end time of the time zone in which the discharge state BA is in the charge / discharge state history ST1 and the time zone to which the discharge restriction BA-only is given in the history PLR1 of the charge / discharge control are inconsistent This shows a case where the discharge state BA has been reached or the discharge state BA has been extended from an earlier time zone for the convenience of the user. That is, it is determined that the discharge state BA has been set for the convenience of the user for the time period in which the discharge state BA was in the charge / discharge state history ST1. In this case, since the necessity of the discharge restriction BA-only is found, the discharge restriction BA-only is not released.

  An example of releasing the control constraint will be described with reference to the example of FIG. For example, a case where the charge / discharge control plan PL1 of 2012/9/20 is generated based on the history PLR1 of the charge / discharge control plan of 2012/9/19 and the charge / discharge state history ST1 is illustrated. In this example, for 09/09 to 11:00 on 2012/9/19, the discharge restriction BA-only is defined in the charge / discharge control plan history PLR1, and the discharge state BA in the charge / discharge state history ST1. That is, the time zone in which the discharge restriction BA-only is given in the history PLR1 of the charge / discharge control plan coincides with the time zone in which the discharge state BA is entered in the charge / discharge status history ST1. In this case, for 09/09 to 11:00 on 2012/9/19, it is determined that the discharge state BA is controlled according to the history PLR1 of the charge / discharge control plan. That is, it is considered that there is no necessity for the discharge control, and the discharge restriction BA-only of 09:30 to 11:00 is released when the charge / discharge control plan PL1 of 2012/9/20 is generated.

  As a result, it is avoided that the discharge restriction BA-only increases excessively when the charge / discharge control plan PL1 is generated, and the degree of freedom related to the generation of the charge / discharge control plan PL1 is limited. That is, the unnecessary control constraint is released and the control constraint is optimized, so that the storage battery charge / discharge control device 100 can generate the charge / discharge control plan PL1 more flexibly and more effectively. It is possible to generate the charge / discharge control plan PL1 in which the power is further reduced.

  In addition, the control constraint generation unit 132 compares the time zone in which the discharge constraint BA-only is given with the time zone in which the discharge state BA is in the charge / discharge state history ST1, and the degree of overlap of the time zones and the start time Whether or not to release the discharge restriction BA-only may be determined according to the coincidence frequency of the end time. For example, the control constraint generator 132 determines that the overlap time between the time zone that is the discharge state BA in the charge / discharge state history ST1 and the time zone that is the discharge constraint BA-only in the history PLR1 of the charge / discharge control plan is the discharge constraint BA. The discharge restriction BA-only may be canceled when it exceeds 80% of the time zone that is -only. Alternatively, the control constraint generation unit 132 sets the start time and end time between the time zone in which the charge / discharge state history ST is in the discharge state BA and the time zone in which the charge / discharge control plan history PLR1 is in the discharge constraint BA-only. When the coincidence frequency exceeds 50%, the discharge restriction BA-only may be released.

  As described above, the storage battery charge / discharge control device 100 according to the present embodiment generates a charge / discharge state history ST that is a history of charge / discharge states including the discharge state BA, energization state AC, and charge state CH of the storage battery. The charge / discharge state history generating means and the charge / discharge control plan history PLR are controlled to the energized state AC or the charge state CH, and the charge / discharge state history ST is discharged to the target time zone that was the discharge state BA. Control constraint generating means for generating a control constraint for instructing control. Further, the storage battery charge / discharge control device 100 has control restriction control in the target time zone segment, and the peak power is reduced in the time zone segment other than the target time zone segment, and control to any of the charge / discharge states is performed. Control plan generation means for generating a charge / discharge control plan PL having

  As described above, the storage battery charge / discharge control device 100 instructs the control to the discharge state BA in advance for the time zone (time zone division) in which the discharge state BA is unplanned in the charge / discharge state history. By generating the control constraint to be performed, it is possible to generate the charge / discharge control plan PL in which the discharge state BA is always defined for the time period. Thereby, the charging / discharging control apparatus 100 of a storage battery can produce | generate the charging / discharging control plan PL with which unplanned charging / discharging control hardly arises. Thereby, charge / discharge control of the storage battery in which peak power is reliably reduced is possible.

  Moreover, the storage battery which a consumer has has the original introduction objectives, such as a fuel for moving, if it is EV, and a power source for driving a battery when going out if it is a notebook PC. The storage battery charge / discharge control apparatus 100 according to the present embodiment generates a charge / discharge control plan PL having control restriction control (discharge control) corresponding to the original introduction purpose in advance, thereby realizing the original introduction purpose of the storage battery. A charge / discharge control plan that reduces peak power can be generated without conflicting with the above.

  Further, in the charge / discharge control device 100 for the storage battery in the present embodiment, whether or not the control is based on the control constraint is generated so as to be identifiable, and the control constraint generation means further discharges in the history PLR of the charge / discharge control plan. When the time zone segment in which the control constraint for instructing the control is generated matches the time zone segment that was in the discharge state BA in the charge / discharge state history ST, the control constraint for the time zone segment is released.

  Thereby, the charge / discharge control apparatus 100 of a storage battery avoids that the control constraint at the time of generation | occurrence | production of the charge / discharge control plan PL increases too much, and is more flexible and more effective based on the optimized control constraint. The charge / discharge control plan PL can be generated. As a result, the storage battery charge / discharge control device 100 can generate the charge / discharge control plan PL that can more effectively reduce the peak power more reliably.

[Second Embodiment]
In the first embodiment, the example of generating the discharge restriction BA-only has been described. On the other hand, in the second embodiment, in addition to the discharge restriction BA-only, the control restriction (energization restriction) AC-only and the control to the charging state CH instructing the control to the energized state AC are instructed. A control constraint (charging constraint) CH-only is generated. Note that the control constraint generated in addition to the discharge constraint BA-only may be either the energization constraint AC-only or the charge constraint CH-only. The process of the storage battery charge / discharge control device 100 according to the second embodiment will be described with reference to a flowchart.

[Flowchart diagram]
FIG. 9 is a flowchart for explaining the flow of charge / discharge control processing of the storage battery in the second embodiment. The processing from step S11 to step S14 is the same as in the first embodiment. In step S14, when the control constraint generation unit 132 acquires the charge / discharge state history ST and the charge / discharge control plan history PLR from the database, the control constraint generation unit 132 sets the charge / discharge state history ST and the charge / discharge control plan. The history PLR is compared. Then, the control constraint generating unit 132 extracts all time zone segments having different charging / discharging rules for the charging / discharging state in the charging / discharging state history ST and the charging / discharging state in the history PLR of the charging / discharging control plan (S25). ). And the control constraint production | generation part 132 produces | generates and provides the control constraint according to the charging / discharging state in charging / discharging state log | history ST with respect to the extracted time slot | zone (S26).

  Specifically, the control constraint generator 132, in the same way as in the first embodiment, in the charge / discharge state history ST, although the discharge state BA is not defined in the history PLR of the charge / discharge control plan. The time zone section that was in the discharge state BA is extracted. Further, the control constraint generation unit 132 extracts a time zone section that was in the energized state AC in the charge / discharge state history ST, even though the energized state AC is not defined in the history PLR of the charge / discharge control plan. This means, for example, a case where the charge state CH is defined in the charge / discharge control plan history PLR but the remaining battery level is full and the power supply state AC is reached. In addition, the control constraint generation unit 132 extracts the time zone classification that was in the charge state CH in the charge / discharge state history ST, even though the charge state CH is not defined in the charge / discharge control plan history PLR. This means, for example, the case where the discharge state BA is defined in the history PLR of the charge / discharge control plan, but the battery cannot be driven due to a decrease in the remaining battery level, and the charge state CH is entered.

  Then, the control constraint generation unit 132 performs the discharge constraint BA-only for the time zone segment that was in the discharge state BA in the charge / discharge state history ST and the energization state AC in the charge / discharge state history ST for the extracted time zone. The energization constraint AC-only is generated for the given time zone segment, and the charge constraint CH-only is generated and assigned for the time zone segment that is in the charge state CH in the charge / discharge status history ST (S26). In addition, the control constraint generating unit 132 has the highest appearance rate in the time zone of the charge / discharge state history ST for the time zone classification in which the charge / discharge state is different between the history PLR of the charge / discharge control plan and the charge / discharge state history ST. Control constraints corresponding to high charge / discharge states may be generated.

  When the control constraint is generated for all the PCs to be controlled (YES in S17), the charge / discharge control plan generation unit 133 has the generated control constraints BA-only, AC-only, and CH-only, and the peak power Is generated (S18). The charge / discharge control plan generation unit 133 generates the charge / discharge control plan PL in consideration of the battery remaining amount of each notebook PC, etc., with the generated control constraints BA-only, AC-only, and CH-only. To do. Similarly, the charge / discharge control plan storage unit 134 stores the generated charge / discharge control plan PL in such a manner that the presence or absence of the control constraints BA-only, AC-only, and CH-only can be identified (S19).

[Concrete example]
FIG. 10 is an example of a specific example for explaining the charge / discharge control process in the second embodiment. In this example, as in the first embodiment, in the morning of 2012/9/21, based on the charge / discharge state history ST2 for the past three days and the history PLR2 for the charge / discharge control plan, The specific example in the case of producing | generating charge / discharge control plan PL2 is shown. The figure shows an example of the charge / discharge state history ST2, the charge / discharge control plan history PLR2, the control constraints, and the newly generated charge / discharge control plan PL2.

  The charge / discharge state history ST2 of FIG. 10 shows the charge / discharge state history in 2012/9/18 to 9/20 for PC1. According to the charge / discharge state history ST2, for example, for 2012/9/20, 09:00 to 11:00, 14:30 to 16:00 are the discharge state BA, 12: 0 to 13:00, 17:30 to 18 0:00 indicates that the charging state is CH, and the other time zone is the energization state AC. Moreover, the history PLR2 of the charge / discharge control plan in the figure shows the history of the charge / discharge control plan in 2012/9/18 to 9/20 for the notebook PC1. According to the history PLR2 of the charge / discharge control plan in the figure, for example, for 2012/9/20, 14:30 to 16:00 is the discharge state BA, 12: 0 to 13:00, 17:30 to 18:00 It is shown that the charging state CH and other time zones are defined as the energization state AC.

  Although the control constraint generator 132 is in a state other than the discharge state BA in the charge / discharge control plan history PLR2 in 2012/9/18 to 9/21, the control state generator 132 in the charge / discharge state history ST2 in the same section A time zone segment that is BA is extracted (S25). Further, the control constraint generation unit 132 is in the charge / discharge state history ST2 of the same time zone segment in spite of being in a state other than the energized state AC in the charge / discharge control plan history PLR2 in 2012/9/18 to 9/21. Time zone that is in the energized state AC, and in the charge / discharge control plan history PLR2, the time zone that is in the charge state CH in the charge / discharge state history ST2 in the same time zone Is extracted (S25). Then, the control constraint generating unit 132 gives a control constraint corresponding to the charge / discharge state in the charge / discharge state history ST2 of the time zone section to the extracted time zone section (S26).

  In this example, the control constraint generation unit 132 generates a control constraint such as the table CT2 in FIG. 10 as the control constraint of 2012/9/21 for the notebook PC1. The control constraint CT2 is a control constraint (discharge constraint) for instructing control to the discharge state BA in a time zone 09: 0 to 11:00 which is a logical sum of 09:30 to 11:00 and 09: 0 to 11:00. Has BA-only. Moreover, in this example, about 16: 30-17: 00 on 2012/9/18 and 17: 30-18: 00 on 2012/9/19, the discharge state BA or the charge in the history PLR2 of the charge / discharge control plan In spite of the state CH being defined, it is the energized state AC in the charge / discharge state history ST2. Moreover, in this example, about 12/00 to 12:30 of 2012/9/19, although the energized state AC is defined in the charge / discharge control plan history PLR2, the charge state in the charge / discharge state history ST2 CH. Therefore, the control constraint CT2 is set to control constraint (energization constraint) AC-only, 12:00 to 12:30 instructing the control to the energized state AC at 16:30 to 17:00, 17:30 to 18:00. It has a control constraint (charging constraint) CH-only that instructs control to the charging state CH.

  And the charging / discharging control plan production | generation part 133 has control of control restrictions in an object time slot | zone division, peak electric power becomes small in time slot divisions other than an object time slot | zone division, and control to any of charge / discharge states is carried out. Is generated (S28). Specifically, the charge / discharge control plan generation unit 133 performs the discharge state BA for the target time zone segment in which the discharge constraint BA-only is generated, and the energization state AC for the target time zone segment in which the energization constraint AC-only is generated. The target time zone segment in which the charging constraint CH-only is generated is defined as the charging state CH. And the charge / discharge control plan production | generation part 133 reduces peak electric power after taking into account that the object time zone division is controlled to the corresponding charge / discharge state about the time zone division in which the control constraint is not produced | generated. Thus, the charge / discharge control plan PL2 that defines the discharge state BA, the energization state AC, and the charge state CH is generated for each time zone of each PC.

  Further, the charge / discharge control plan PL2 is generated so as to be identifiable as to whether or not each charge / discharge state is defined based on the control constraint. In the charging / discharging control plan PL2 of FIG. 10, the time zone segment including the black square indicates a time zone segment in which the charge / discharge state corresponding to the control constraint is defined based on the control constraint. Thereby, the control constraint production | generation part 132 can extract appropriately the time slot | zone division controlled by each charging / discharging state based on the control constraint, and can produce | generate a control constraint appropriately.

[Release control constraints]
Further, the generated control constraint may be released in the same manner as in the first embodiment. The control constraint generation unit 132 is in the charge / discharge state corresponding to the time zone in which the control constraints BA-only, AC-only, and CH-only are given in the charge / discharge control plan history PLR2 and the charge / discharge state history ST2. If the start time and end time coincide with the specified time zone, the control constraint is released. That is, it is considered that the charging / discharging state corresponding to the control constraint is not brought about by the convenience of the user because the control is performed according to the history PLR2 of the charge / discharge control plan, and the control constraint of the time period is released. .

  As described above, in the charge / discharge control apparatus 100 for a storage battery according to the present embodiment, the control constraint generation unit further controls the discharge state BA or the charge state CH in the history PLR of the charge / discharge control plan. In the charging / discharging state history ST, the control constraint for instructing energization control for the time zone section that was in the energizing state AC, the control to the discharging state BA or the energizing state AC in the history PLR of the charge / discharge control plan, In the charge / discharge state history ST, one or both of control constraints for instructing charge control for the time zone segment that was in the charge state CH are generated.

  As a result, the storage battery charge / discharge control device 100 preliminarily applies to the time zone (time zone division) in which the discharge state BA, the energization state AC, and the charge state CH become unplanned in the charge / discharge state history. By generating the control constraint that instructs the control to the charge / discharge state, it is possible to generate the charge / discharge control plan PL in which the corresponding charge / discharge state is defined for the time period. Thereby, charge / discharge control of the storage battery in which peak power is reliably reduced is possible.

  Moreover, the storage battery which a consumer has has the original introduction objectives, such as a fuel for moving, if it is EV, and a power source for driving a battery when going out if it is a notebook PC. The storage battery charge / discharge control device 100 in the present embodiment does not conflict with the original introduction purpose of the storage battery by generating a charge / discharge control plan PL having control of control constraints corresponding to the original introduction purpose in advance. In addition, a charge / discharge control plan that reduces peak power can be generated.

  In the storage battery charge / discharge control apparatus 100 according to the present embodiment, the control plan generation is generated so as to be identifiable as to whether or not the control is based on the control constraint. The control constraint generation means further includes a time zone segment in which a control constraint instructing energization control is generated in the history PLR of the charge / discharge control plan, and a time zone segment that was in the energization state AC in the charge / discharge status history ST. In the case of coincidence, the control restriction of the time zone section is released, the time zone section in which the control constraint instructing the charge control is generated in the charge / discharge control plan history PLR, and the charge state CH in the charge / discharge state history ST When the time zone divisions match, either or both of the control restrictions of the time zone division are released.

  Thereby, the charge / discharge control apparatus 100 of a storage battery avoids that the control constraint at the time of generation | occurrence | production of the charge / discharge control plan PL increases too much, and is more flexible and more effective based on the optimized control constraint. The charge / discharge control plan PL can be generated. As a result, the storage battery charge / discharge control device 100 can generate the charge / discharge control plan PL that can more effectively reduce the peak power more reliably.

[Third embodiment]
In the first and second embodiments, the storage battery charge / discharge control device 100 has control restriction control in the target time zone, and the peak power is reduced in the time zone other than the target time zone, A charge / discharge control plan PL having control to any of the charge / discharge states is generated. In contrast, the storage battery charge / discharge control device 100 according to the third embodiment generates a temporary charge / discharge control plan that does not have a control constraint, and the peak when the temporary charge / discharge control plan applies the control constraint. When the power does not exceed the peak power before applying the control constraint, the temporary charge / discharge control plan is set as the charge / discharge control plan PL.

  The process of the charge / discharge control plan generation unit 133 in the present embodiment will be specifically described. The charge / discharge state history ST generation process and the control constraint generation process are the same as in the first and second embodiments. That is, it is the same as steps S11 to S17 in the flowchart of FIG. 7 in the first embodiment. When the control constraint is generated (YES in S17), the charge / discharge control plan generation unit 133 in the present embodiment generates a temporary charge / discharge control plan that has no peak control and has no control constraint. At this time, the charge / discharge control plan generation unit 133 generates a temporary charge / discharge control plan based on, for example, the method described in Patent Document 3. And the charging / discharging control plan production | generation part 133 in this Embodiment determines whether there is no trouble in reduction of peak electric power, when a control restriction is applied to the produced | generated temporary charging / discharging control plan. That is, the charge / discharge control plan generation unit 133 assumes a case where the charge / discharge state is changed according to the control constraint in the temporary charge / discharge control plan, and the peak power at that time is the peak before the control constraint is applied. It is determined whether or not the power is exceeded.

  That is, the storage battery charge / discharge control device 100 charges a temporary charge / discharge control plan that does not have a control constraint when the peak power when the control constraint is applied does not exceed the peak power before the control constraint is applied. The charge / discharge state of the storage battery is controlled with the discharge control plan PL. And the charge / discharge control apparatus 100 of a storage battery has control restrictions beforehand like the 1st, 2nd embodiment, for example about the case where the peak electric power when a control restriction is applied becomes large. And the charging / discharging control plan PL with which peak electric power becomes small is produced | generated, and the charging / discharging state of a storage battery is controlled.

  Further, the charge / discharge control plan generation unit 133 repeatedly generates a temporary charge / discharge control plan and evaluates the temporary charge / discharge control plan based on peak power when a control constraint is applied to the temporary charge / discharge control plan (local search). The approximate charge / discharge control plan may be generated in a short time in an approximate solution method. At this time, the charge / discharge control plan generation unit 133, for example, if the peak power when the control constraint is applied to the temporary charge / discharge control plan is smaller than the previously generated temporary charge / discharge control plan, the temporary charge / discharge control plan Replace

  As described above, the charge / discharge control device 100 for a storage battery according to the third embodiment is a charge / discharge state history ST that is a history of charge / discharge states including the discharge state BA, energization state AC, and charge state CH of the storage battery. In the charge / discharge control plan history PLR, the control to the energized state AC or the charge state CH, and in the charge / discharge state history ST, the discharge control is instructed to the time zone section that was in the discharge state BA. Generate control constraints. In addition, the storage battery charge / discharge control device 100 generates a temporary charge / discharge control plan having no control constraint, and the peak power when the temporary charge / discharge control plan applies the control constraint is the peak power before the control constraint is applied. When the peak power is not exceeded, the temporary charge / discharge control plan is set as the charge / discharge control plan PL.

  As described above, the charge / discharge control device 100 for a storage battery according to the present embodiment does not have a control constraint as long as there is no problem in reducing the peak power even if the control constraint is applied to the temporary charge / discharge control plan PL. The storage battery can be controlled based on the discharge control plan. In other words, it is a case where a charge / discharge state corresponding to the control constraint occurs by evaluating in advance whether or not there is any problem in reducing the peak power when the control constraint is applied to the charge / discharge control plan. However, it is possible to generate a charge / discharge control plan in which peak power is reliably reduced. Moreover, the charge / discharge control apparatus 100 of a storage battery can generate | occur | produce the charge / discharge control plan by which peak electric power was reduced more flexibly and more effectively, without considering control restrictions. In addition, the storage battery charge / discharge control device 100 generates the charge / discharge control plan PL in which the peak power is reduced even when the charge / discharge state corresponding to the control constraint occurs. It is possible to generate a charge / discharge control plan that does not conflict with the plan.

[Fourth Embodiment]
The storage battery charge / discharge control device 100 according to the fourth embodiment generates one or a plurality of storage batteries whose storage constraints are approximated as a storage battery dischargeable time and a control constraint, and calculates the logical sum of the control constraints of the storage battery group. The charge / discharge control plan PL is generated for each storage battery group as a control constraint of the storage battery group. First, an outline of processing in the fourth embodiment will be described. In the fourth embodiment, the control unit 130 further includes a group generation unit.

[Process overview]
FIG. 11 is a diagram illustrating an outline of processing of the storage battery charge / discharge control device 100 according to the fourth embodiment. Similarly to the first embodiment, the charge / discharge state history generating unit 131 acquires the charge / discharge state of each notebook PC 30 to generate the charge / discharge state history ST, and the control constraint generating unit 132 is charged / discharged. The state history ST and the charge / discharge control plan history PLR are compared to generate a discharge constraint BA-only. Here, in the fourth embodiment, the group generation unit 136 generates a group (storage battery group) including one or a plurality of notebook PCs based on the control constraint of each notebook PC 30 and the dischargeable time. To do. Then, the charge / discharge control plan generation unit 133 regards the generated group as one virtual notebook PC 30 and generates a charge / discharge control plan PL for each virtual notebook PC.

  Further, the charge / discharge control plan storage unit 134 stores the charge / discharge control plan PL generated for each virtual notebook PC so that the presence or absence of the control constraint can be identified. However, at this time, the control constraint shown to be identifiable is not a control constraint for each virtual notebook PC that is a group, but a control constraint generated for each notebook PC 30. Details will be described later. Then, the charge / discharge state control unit 135 controls the charge / discharge state of each notebook PC 30 based on the charge / discharge control plan PL.

  Then, the process of the charging / discharging control apparatus 100 of the storage battery in the fourth embodiment will be described based on a flowchart.

[Flowchart diagram]
FIG. 12 is a flowchart for explaining the flow of charge / discharge control processing of the storage battery in the fourth embodiment. Processes from step S11 to step S17 are the same as those in the flowchart (FIG. 7) of the first embodiment. When the control constraint is generated for all PCs to be controlled (YES in S17), the group generation unit 136 acquires the current battery remaining amount of each notebook PC from the database (S38).

  Subsequently, the group generation unit 136 selects one unchecked notebook PC, that is, an ungrouped notebook PC as a target notebook PC (S39). Then, the group generation unit 136 matches the target notebook PC with the time zone segment to which the control constraint is applied, or the difference between the time zone segments to which the control constraint is applied is within two time zone segments or A plurality of notebook PCs are extracted (S40). Then, the group generation unit 136, for example, sets the target notebook PC and the notebook PC whose battery remaining amount is ± 10% among the extracted notebook PCs as the same group (S41). And the group production | generation part 136 provides the check which shows having been grouped to the notebook PC added to the same group (S42).

  In other words, the group generation unit 136 sets the battery remaining amount and the notebook PCs whose control restrictions are approximated as one group. In this example, the group generation unit 136, for example, uses the same group when the difference in battery remaining amount between notebook PCs is within 10% and the difference in control constraints is within two time zone segments. And That is, for example, the group generation unit 136 sets the same group when the difference in the remaining battery power between the notebook PCs is within the reference value and the control constraints are equal to or greater than the reference level. In this example, the group is generated based on the remaining battery level and the control constraint, but the group may be generated based on the battery driveable time and the control constraint. The battery remaining amount substantially indicates a battery driveable time. The charge / discharge control plan PL is generated in consideration of, for example, the remaining battery capacity and the battery driveable time. For this reason, the group generation unit 136 generates a group based on, for example, the remaining battery level and the battery driveable time in addition to the control constraint.

  When all the notebook PCs are checked, that is, when all the notebook PCs are grouped (YES in S43), the group generation unit 136 generates control constraints and specifications for each group (S44). For example, the group generation unit 136 generates a logical sum of the control constraints of each PC 30 included in the group as a group control constraint. Further, the group generation unit 136 generates a specification when the group is regarded as one virtual notebook PC based on the battery capacity, the remaining battery level, the power consumption, and the like of the notebook PCs 30 in the group. Specifically, the battery capacity and power consumption of the group are calculated by adding the battery capacity and power consumption of each notebook PC 30 included in the group. Further, the remaining battery capacity of the group is calculated by adding the product of the battery capacity of each notebook PC 30 included in the group and the remaining battery capacity and dividing the result by the total battery capacity of the notebook PC 30. The group control constraints and specifications may be obtained by other methods.

  Subsequently, the charge / discharge control plan generation unit 133 generates a charge / discharge control plan PL having a group discharge constraint BA-only, the peak power is reduced, and the charge / discharge state of each section is defined for each group. (S45). Specifically, the charge / discharge control plan generation unit 133 generates a group-unit charge / discharge control plan PL that has a group discharge constraint BA-only and takes into account the remaining battery power of the group. Subsequently, the charge / discharge control plan storage unit 134 stores the generated charge / discharge control plan PL for each group so that the presence or absence of the discharge restriction BA-only can be identified (S46).

  However, at this time, the charge / discharge control plan storage unit 134 discharges the charge / discharge control plan PL for each notebook PC based on the control constraint (S16) of each notebook PC, not the group including the notebook PC. Presence / absence of constraint BA-only is identified and saved. Thereby, at the time of the next control constraint generation, the control constraint generation unit 132 is more appropriate for each notebook PC 30 based on the control constraint of the notebook PC 30 rather than the control constraint of the group to which the target notebook PC 30 belongs. Control constraints can be generated.

[Concrete example]
FIG. 13 is a diagram for explaining grouping processing of notebook PCs in the present embodiment. In the upper tables LT1 and CT3a in the same figure, examples of remaining battery levels and control restrictions of the notebook PCs 1 to 6 to be controlled are shown. In this example, notebook PC 1 and notebook PC 2 are assigned to group 1, notebook PC 3 and notebook PC 4 are assigned to group 2, notebook PC 5 is assigned to group 3, and notebook PC 6 is assigned to group 4.

  Specifically, in the table LT1 of FIG. 13, the remaining battery level of the notebook PC 1 is 95%, the remaining battery level of the notebook PC 2 is 90%, and the difference between the remaining battery levels of the notebook PC 1 and the notebook PC 2 is ± 10%. Is within. Further, according to the control constraint table CT3a, the control constraint of the notebook PC 1 is generated from 09: 0 to 11:00, and the control constraint of the notebook PC 2 is generated from 09:30 to 10:30. For this reason, the difference between the time zone segments in which the control constraints are generated between the notebook PC 1 and the notebook PC 2 is within two time zone segments. Therefore, the group generation unit 136 sets the notebook PC 1 and the notebook PC 2 as the same group Gr (group 1). Similarly, the group generation unit 136 sets the notebook PC 3 and the notebook PC 4 as the group 2. Note that the notebook PC 5 and the notebook PC 6 have the same control constraint generation status, but the difference in battery remaining amount between the notebook PC 5 and the notebook PC 6 is ± 10% or more. Therefore, the notebook PC 5 is assigned to the group 3 and the notebook PC 6 is assigned to the group 4.

  Then, the group generation unit 136 sets the discharge constraint BA− at 09:00:00 to 11:00 based on the logical sum of the time zone divisions to which the discharge constraint BA-only between the notebook PC1 and the notebook PC2 is assigned. Generate only. Similarly, the group generation unit 136 sets the discharge restriction at 14:00:00 to 15:30 for the group 2 based on the logical sum of the time zone divisions in which the discharge restriction BA-only between the notebook PC 3 and the notebook PC 4 is generated. BA-only is generated. Further, since the discharge restriction BA-only is not originally generated for the notebook PC 5 and the notebook PC 6, the discharge restriction BA-only is not generated for the groups 3 and 4 as well.

  Tables LT2 and LT3 in the lower part of FIG. 13 are tables for explaining a method of calculating the specifications of the generated groups 1 to 4. According to Table LT2, the battery capacity of the notebook PC 1 included in the group 1 is 63 Wh, the power consumption in the energization state AC is 22 W, and the power consumption in the charge state CH is 89 W. Similarly, the battery capacity of the notebook PC 2 included in the group 1 is 56 Wh, the power consumption in the energization state AC is 11 W, and the power consumption in the charge state CH is 65 W. Therefore, the battery capacity of the virtual notebook PC corresponding to the group 1 is a value 119 (= 63 + 56) Wh obtained by adding the battery capacity of the notebook PC 1 and the notebook PC 2. Similarly, the power consumption in the energization state AC of the virtual notebook PC corresponding to the group 1 is 33 (= 22 + 11) W, and the power consumption in the charge state CH is 154 (= 89 + 65) W. The remaining battery level of the virtual notebook PC corresponding to group 1 is 92.6% (= {63 Wh × 0.95 + 56 Wh × 0.9} / 63 Wh + 56 Wh). In this way, the specifications of the groups 1 to 4 are calculated.

  The charge / discharge control plan generation unit 133 generates the charge / discharge control plan PL for each group in consideration of specifications such as the remaining battery power and power consumption of the group after having the discharge constraint BA-only for each group. To do. The time required for charging, the dischargeable time, the power consumption required for the energized state AC, and the like differ according to the group specifications. For this reason, the specification of a group unit is considered and the charge / discharge control plan PL is generated. As described above, the notebook PCs 30 are grouped, so that variations of the charge / discharge control plan PL to be generated are greatly reduced. Thereby, even if it is a case where the number of storage batteries is huge, the charging / discharging control apparatus 100 of a storage battery can suppress load and can produce | generate the charging / discharging control plan PL efficiently in a short time.

For example, the variation reduction amount in the case where the number of notebook PCs 30 is N, the type of charge / discharge state is S, the number of time zone sections is T, and the number of groups is G (G <N) will be exemplified. In this case, the total pattern time zone division for each note PC30 in the charge and discharge control plan PL ^becomes as ^{S TN.} On the other hand, in the embodiment of the present embodiment, by the number of storage battery of the control target is reduced from N to G (G <N), variation total number of time slot division of each group in the charge and discharge control plan PL is, S ^TG It will be as follows. For example, assuming that N = 6, S = 3, T = 60, and G = 4, the total number of variations based on the number of notebook PCs 30 is 3 ^{6 * 60} ≈10 ¹⁷² , whereas the variation based on the number of groups The total number is 3 ^{4 * 60} ≈10 ¹¹⁵ . Thus, variations total by being a group is reduced by a factor of 10 ⁵⁷ minutes.

  As described above, the storage battery control device 100 according to the fourth embodiment generates one or a plurality of storage batteries whose dischargeable time and control constraints are approximated as a storage battery group, and performs a logical sum of the control constraints of the storage battery group. Has a group generation means for controlling the storage battery group. And a control plan production | generation means produces | generates charging / discharging control plan PL for every storage battery group.

  Thereby, since the charging / discharging control apparatus 100 of a storage battery produces | generates charging / discharging control plan PL not to a storage battery unit but to the group unit containing 1 or several storage battery, even if it is a case where the number of storage batteries is enormous. In addition to suppressing the load related to the generation process of the charge / discharge control plan PL, the time required for the generation process can be shortened. For this reason, the charging / discharging control apparatus 100 of a storage battery can produce | generate the charging / discharging control plan PL, without increasing apparatus resources, and can reduce peak electric power reliably.

100: storage battery charge / discharge control device 301: CPU 302: input device 303: monitor 304: medium reading device 305: interface device 306: wireless communication device 307: RAM 308: hard disk device

Claims (9)

A storage battery charge / discharge control device that provides a control service based on a plurality of storage battery charge / discharge control plans,
Charge / discharge state history generating means for generating a charge / discharge state history that is a history of charge / discharge states including a discharge state, an energized state, and a charge state of the plurality of storage batteries;
About the 1st storage battery, it is control to the energized state or the charged state in the history of the first charge / discharge control plan , and the discharge is performed in the target time zone section that was the discharged state in the charged / discharged state history. Control constraint generation means for generating a first control constraint that specifies control to a state;
For the first storage battery, specify the control to the discharge state in the target time zone section of the first control constraint, for the storage battery other than the first storage battery and the first storage battery, A control plan for generating a second charge / discharge control plan for designating control to any of the charge / discharge states so that peak power of the plurality of storage batteries is reduced in a time zone other than the target time zone. A charging / discharging control device for a storage battery. In claim 1,
The control plan generating means generates the control plan so that it is possible to identify whether the control to the discharge state is based on the first control constraint,
The control constraint generation means further includes a time zone segment in which a first control constraint that specifies control to the discharge state is generated in the history of the second charge / discharge control plan , and the charge / discharge state history in the history A charge / discharge control device for a storage battery that releases control restrictions of the time zone section when the time zone sections in the discharged state coincide. In claim 1 or 2,
The control constraint generation unit is further configured to control the discharge state or the charge state in the history of the first charge / discharge control plan , and in the charge / discharge state history, the time zone in which the energized state is present. second control constraints for the control to the energized state to division, the discharge state or a control to the energized state, in the first history of charging and discharging control plan, in the charge and discharge state history generates either or both of the third control constraints, which specify the control to the charging state to the time zone division was the state of charge,
The control plan generation means designates the control to the discharge state in the target time zone section of the first control constraint for the first storage battery, and in addition to this, the second control constraint One or both of the control to the energized state in the target time zone section and the control to the charged state in the target time zone section of the third control constraint, and the first storage battery and the second A third control unit that designates control to any one of the charge / discharge states in a time zone other than the target time zone for a storage battery other than one storage battery so that peak power of the plurality of storage batteries is reduced. Storage battery charge / discharge control device for generating a charge / discharge control plan . In claim 3,
The control plan generation means can identify whether the control to the energized state is based on the second control constraint and whether the control to the charged state is based on the third control constraint. Generating,
The control constraint generation means further includes a time zone segment in which a second control constraint that specifies control to the energized state in the history of the third charge / discharge control plan is generated, and the charge / discharge status history The release of the second control constraint for the time zone segment when the time zone segment that was in the energized state matches, and the third control constraint for designating the control to the charged state in the charge / discharge control plan is generated Charge / discharge control of a storage battery that performs either or both of releasing the third control restriction of the time zone section when the time zone section and the time zone section that has been in the charge state in the charge / discharge state history coincide with each other apparatus. A storage battery charge / discharge control device that provides a control service based on a charge / discharge control plan for charging / discharging a plurality of storage batteries,
Charge / discharge state history generating means for generating a charge / discharge state history that is a history of charge / discharge states including a discharge state, an energized state, and a charge state of the plurality of storage batteries;
In the charge / discharge control plan, control to the energized state or the charged state, and in the charge / discharge state history, a control constraint for designating the control to the discharged state in the time zone section that was the discharged state. Control constraint generating means for generating;
A temporary charge / discharge control plan that does not have the control constraint is generated, and when the temporary charge / discharge control plan has control of the control constraint, the temporary charge / discharge control plan is changed to the charge / discharge A charge / discharge control device for a storage battery, comprising: a control plan generation unit configured as a control plan. In any one of Claims 1 thru | or 5,
The storage battery charge / discharge control device further comprises:
One or a plurality of the storage batteries whose control constraints approximate the storage battery dischargeable time and the control constraints are generated as a storage battery group, and the logical sum of the control constraints of each storage battery of the storage battery group is the control constraint of the storage battery group Having group generation means,
The said control plan production | generation means is a charging / discharging control apparatus of the storage battery which produces | generates a 4th charging / discharging control plan for every said storage battery group. In any one of Claims 1 thru | or 6.
The storage battery charge / discharge control device further comprises:
A charge / discharge control device for a storage battery, comprising: charge / discharge state control means for controlling the storage battery based on the second charge / discharge control plan. A storage battery charge / discharge control method for providing a charge / discharge control service for a plurality of storage batteries,
A charge / discharge state history generation step for generating a charge / discharge state history that is a history of a charge / discharge state including a discharge state, an energized state, and a charge state of the plurality of storage batteries;
About the 1st storage battery, it is control to the energized state or the charged state in the history of the first charge / discharge control plan , and the discharge is performed in the target time zone section that was the discharged state in the charged / discharged state history. A control constraint generation step for generating a control constraint that specifies control to a state;
For the first storage battery, the control to the discharge state is specified in the target time zone section of the control constraint, and the target time for the storage battery other than the first storage battery and the first storage battery. A control plan generating step for generating a second charge / discharge control plan for designating control to any of the charge / discharge states so that the peak power of the plurality of storage batteries is reduced in a time zone other than the zone; A charge / discharge control method for a storage battery. A computer-readable storage battery charge / discharge control program for causing a computer to execute a storage battery charge / discharge control process for providing a charge / discharge control service for a plurality of storage batteries,
The storage battery charge / discharge control process is:
A charge / discharge state history generation step for generating a charge / discharge state history that is a history of a charge / discharge state including a discharge state, an energized state, and a charge state of the plurality of storage batteries;
About the 1st storage battery, it is control to the energized state or the charged state in the history of the first charge / discharge control plan , and the discharge is performed in the target time zone section that was the discharged state in the charged / discharged state history. A control constraint generation step for generating a control constraint that specifies control to a state;
For the first storage battery, the control to the discharge state is specified in the target time zone section of the control constraint, and the target time for the storage battery other than the first storage battery and the first storage battery. A control plan generating step for generating a second charge / discharge control plan for designating control to any of the charge / discharge states so that the peak power of the plurality of storage batteries is reduced in a time zone other than the zone; A storage battery charge / discharge control program.

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