JP2017158363A - Power management device and power management method, and logistics network system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively use power stored in a secondary battery of an industrial vehicle included in a logistics network system.SOLUTION: A power management device 7 is used for a logistics network system comprising a plurality of industrial vehicles mounting a secondary battery capable of power reception from a power network comprising at least one of a power generation facility and a load facility and power supply to the power network. The power management device 7 comprises: an operation management information acquisition unit 71 for acquiring operation management information on the plurality of industrial vehicles; and a power supply information creation unit 72 for creating power supply information on at least one industrial vehicle, by using the operation management information. The power supply information includes at least either of the propriety of power supply to the power network, a time zone in which power supply to the power network is possible, and electric energy capable of being supplied to the power network.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a power management apparatus, a power management method, and a logistics network system.

In recent years, smart energy networks have been proposed that combine power systems, distributed power sources, and consumers provided by electric power companies to achieve mutual energy and CO ₂ savings through mutual interchange of electricity and heat within the community. . In addition, in order to improve the efficiency of energy efficiency in the smart energy network and stabilize the power supply, technology development for optimizing the supply and demand of power such as CEMS (Community Energy Management System) has been promoted. Yes.

  On the other hand, for example, in a logistics network system that manages logistics from manufacturing to sales, many industrial vehicles are used for transportation and cargo handling. Industrial vehicles are becoming more and more electrified due to environmental conservation, and industrial vehicles such as forklifts equipped with a lead battery as a secondary battery are widespread. Also, the use of lithium ion secondary batteries is expected to be put into practical use.

Japanese Patent No. 5490834 Japanese Patent No. 5396549

  In recent years, rapid charging characteristics, charging capacity and high energy efficiency of lithium ion secondary batteries have attracted attention as secondary batteries mounted on industrial vehicles. Lithium ion secondary batteries have an energy density that is approximately twice that of conventionally used lead batteries, so there is a high possibility that excess power will be generated.

  If the entire secondary battery mounted on a large number of industrial vehicles managed by the logistics network system is regarded as a single power storage device and linked to the smart energy network, greater effects of energy saving and stable power supply can be expected. it can.

  The present invention relates to a power management apparatus and a power management method capable of effectively using power stored in a secondary battery of an industrial vehicle managed and operated by a logistics network system for energy management of logistics related facilities such as a distribution center. An object of the present invention is to provide a logistics network system.

In order to solve the above problems, the present invention employs the following means.
A first aspect of the present invention is a logistics network system including a plurality of industrial vehicles equipped with secondary batteries capable of receiving power from a power network including at least one of power generation facilities and load facilities and supplying power to the power network. A power management device used for the operation, the operation management information acquisition unit for acquiring operation management information of the plurality of industrial vehicles, and charging of the secondary battery of at least one industrial vehicle using the operation management information A power supply information creation unit that creates power supply information based on a state, and the power supply information includes information indicating whether power can be supplied to the power network, a time zone during which power can be supplied to the power network, and an amount of power that can be supplied to the power network. It is an electric power management apparatus containing at least one.

  According to the power management apparatus, the industrial vehicle is equipped with a secondary battery that can receive and supply power to and from the power network, and the power supply information about at least one industrial vehicle is the operation management information of the industrial vehicle. Based on the power supply information creation unit.

  The power management apparatus includes a schedule creation unit that creates a schedule for the plurality of industrial vehicles using the operation management information and the power supply information, and the schedule is at least one of an operation schedule and a charge / discharge schedule. May be included.

  The power management apparatus may include a power demand information acquisition unit that acquires power demand information of the power network, and the schedule creation unit may create the schedule using the power demand information.

  According to the above power management device, a schedule of a plurality of industrial vehicles, for example, an operation schedule, a charge / discharge schedule, and a management schedule is created using the power demand information of the power network. A corresponding schedule can be created.

  In the power management apparatus, the power demand information may include power supply consideration information for power supply to the power network.

  According to the power management apparatus, a supply price for power supply to the power network is used as one of power demand information, and a schedule of a plurality of industrial vehicles, for example, at least one of an operation schedule, a charge / discharge schedule, and a management schedule. Therefore, it is possible to create a schedule reflecting the power supply consideration.

  The power management apparatus includes a period feeding consideration acquisition unit that acquires a period feeding consideration for feeding to the power network in a predetermined period using the schedule and the power demand information created by the schedule creation unit. Also good.

  The power management apparatus uses the power supply information acquisition unit that acquires power supply information of the power network, the schedule created by the schedule creation unit, and the power supply information from the power network in the predetermined period. It is good also as providing the period consumption consideration acquisition part which acquires the period consumption consideration with respect to no power reception.

  The power management apparatus may include a schedule change unit that changes the schedule created by the schedule creation unit using a difference between the period power supply consideration and the period consumption consideration.

  According to the above power management device, the schedule created by the schedule creation unit is changed using the difference between the period power supply consideration and the period consumption consideration, and therefore it is possible to make the schedule taking into account the benefits of power supply. .

  In the power management apparatus, the schedule change unit may include a plurality of schedule candidate creation units that create a plurality of schedule candidates that are different from each other in the schedule created by the schedule creation unit. It is good also as providing the schedule candidate selection part which selects one of the said schedule candidates.

  According to the above power management apparatus, in the schedule created by the schedule creation unit, a plurality of schedule candidates having different changed portions are created, and one schedule candidate is selected from the plurality of schedule candidates according to a predetermined criterion. It will be selected by the selection unit. This makes it possible to select an appropriate schedule for a predetermined standard.

  In the power management apparatus, the predetermined standard is, for example, whether power can be supplied to the power network, a time zone in which power can be supplied to the power network, an amount of power that can be supplied to the power network, and the The period supply consideration is at least one of the differences from the period consumption consideration.

  In the power management apparatus, the schedule changing unit includes a schedule candidate creating unit that creates a plurality of schedule candidates having different changed portions in the schedule created by the schedule creating unit, and a plurality of the schedule candidates to the user. It is good also as providing the presentation part to present.

  According to the power management apparatus, since the schedule candidate created by the schedule candidate creation unit is presented to the user, the user can specify a desired schedule candidate.

  In the power management apparatus, the supply consideration information includes, for example, a contract price in a corresponding time zone of the wholesale power trading market on the day before the execution date of the schedule, a corresponding time zone of the wholesale power trading market on the execution date of the schedule And the contract price in the corresponding time zone of the forward market of the wholesale power market corresponding to the execution date of the schedule.

  The power management apparatus includes an inter-vehicle power supply information acquisition unit that acquires inter-vehicle power supply information for at least one industrial vehicle using the operation management information, and the inter-vehicle power supply information includes: It is good also as including at least one of the time zone which can supply electric power to other industrial vehicles, and the electric energy which can be supplied to other industrial vehicles.

  According to a second aspect of the present invention, there is provided a plurality of industrial vehicles equipped with a secondary battery capable of receiving power from a power network including at least one of power generation equipment and load equipment and supplying power to the power network, A logistics network system comprising the power management apparatus according to claim 1.

  According to a third aspect of the present invention, there are provided a plurality of industrial vehicles equipped with a secondary battery capable of receiving power from a power network including at least one of power generation equipment and load equipment and supplying power to the power network; An operation management information acquisition unit that acquires operation management information of an industrial vehicle; and an electric power supply information generation unit that generates electric power supply information based on a charge state of a secondary battery of at least one industrial vehicle using the operation management information; The operation management information includes an operation start time and an operation end scheduled time of at least one industrial vehicle, and the power supply information includes at least one of a time zone and an amount of power that can be supplied to the power network. Including logistics network system.

  According to a fourth aspect of the present invention, operation management information of a plurality of industrial vehicles equipped with a secondary battery capable of receiving power from a power network including at least one of power generation equipment and load equipment and supplying power to the power network is provided. And obtaining power supply information based on a state of charge of a secondary battery of at least one industrial vehicle using the operation management information, and the operation management information includes at least one operation management information. The power management method includes an operation start time and an operation end scheduled time of the industrial vehicle, and the power supply information includes at least one of a time zone in which power can be supplied to the power network and an amount of power.

ADVANTAGE OF THE INVENTION According to this invention, there exists an effect that the electric power stored in the secondary battery mounted in an industrial vehicle can be used effectively.
Thereby, a big effect can be expected in energy supply and demand management such as demand response, peak cut, peak shift, power sales to the wholesale power market, and peak power supply of the regional power network. At the same time, optimal operation management of industrial vehicles and efficiency of logistics operations can be achieved.

It is the figure which showed an example of the layout of the distribution center with which the logistics network system which concerns on one Embodiment of this invention is provided. It is the flowchart which showed an example of the flow of the entering / exiting process performed by the logistics network system which concerns on one Embodiment of this invention. 1 is a diagram illustrating a schematic overall configuration of a logistics network system according to an embodiment of the present invention. FIG. 4 is a functional block diagram showing functions provided in the warehouse management apparatus shown in FIG. 3. FIG. 4 is a functional block diagram showing functions provided in the transportation delivery management apparatus shown in FIG. 3. FIG. 4 is a functional block diagram showing functions provided in the material handling management device shown in FIG. 3. It is the functional block diagram which showed the function with which the electric power management apparatus shown in FIG. 3 is provided. It is the flowchart which showed the process sequence performed by the power management which concerns on one Embodiment of this invention. It is the figure which showed an example of the operation schedule at the time of employ | adopting a lead battery as a secondary battery mounted in an industrial vehicle, and implementing the conventional power management. It is the figure which showed an example of the operation schedule at the time of employ | adopting a lithium ion secondary battery as a secondary battery and implementing the power management by the power management apparatus which concerns on this embodiment. It is the figure which showed the power consumption of the whole distribution center at the time unit when operation is performed by the operation schedule shown in FIG. It is the figure which showed the power consumption of the whole distribution center at the time unit when operation | movement was performed with the operation schedule shown in FIG. It is the functional block diagram which showed the function with which the power management apparatus which concerns on other embodiment of this invention is provided.

  Hereinafter, an embodiment of a distribution-related facility constituting a power management apparatus, a power management method, and a logistics network system according to the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing an example of a layout of a distribution center B that is a distribution-related facility that constitutes a part of distribution managed by the logistics network system according to the present embodiment, and FIG. 2 shows a logistics according to the present embodiment. It is the flowchart which showed an example of the flow of the entering / exiting process performed by a network system.
In FIG. 1, a cargo such as a product transported by a truck or the like is transported to an arrival area A1, and arrival management is performed (step S1 in FIG. 2). The cargo whose arrival management has been completed is transported to the storage area A2 and stored (step S2 in FIG. 2). The cargo that has received the delivery instruction is moved from the storage area A2 to the picking area A3 (step S3 in FIG. 2) and further transported to the distribution processing area A4. In the distribution processing area A4, products that have been subjected to processing operations such as pricing, inspection, packaging, etc. (step S4 in FIG. 2) are sorted in the sorting area A5 (step S5 in FIG. 2). Shipped to the shipping destination (step S6 in FIG. 2).
Some of the cargo transported to the arrival area A1 may be directly transported from the arrival area A1 to the sorting area A5 without going through the storage area A2, the picking area A3, and the distribution processing area A4. is there.

  The transportation in the arrival area A1, the storage area A2, the picking area A3, and the shipping area A6 in FIG. For picking in the picking area A3, for example, an industrial vehicle such as an order picker is used. In this way, the logistics network system manages and operates a plurality of industrial vehicles 1 (see FIG. 3) for carrying and handling cargo.

FIG. 3 is a schematic overall configuration of a power system and an information communication system of a smart logistics & energy management system (a system for managing both logistics and energy operation; hereinafter referred to as “SLEMS”) in the distribution center B according to the present embodiment. FIG. As shown in FIG. 3, the SLEMS 10 includes a plurality of industrial vehicles 1, at least one charger / discharger 2, a warehouse management device 3, a transportation management device 5, and a material handling management device (hereinafter referred to as “material handling management device”). 6 and a power management device 7 and the like.
For example, the charger / discharger 2, warehouse management device 3, transport / delivery management device 5, material handling management device 6, and power management device 7 are connected to the communication network 8 and can exchange information with each other. . The communication network 8 may be wired or wireless, and the communication protocol is not particularly limited. Information communication with an external energy management network such as a regional EMS (Energy Management System) is possible. In addition, each industrial vehicle 1 and the charger / discharger 2, the warehouse management device 3, the transport / delivery management device 5, the material handling management device 6, and the power management device 7 also exchange information with each other via a wireless communication line. Possible configuration. The industrial vehicles 1 can also communicate with each other.

The industrial vehicle 1 is, for example, a forklift, an automatic guided vehicle, an order picker or the like that performs cargo handling and transportation in a certain area, as exemplified by the distribution center B shown in FIG. Each industrial vehicle 1 is equipped with a secondary battery 11, a battery control unit 12, and a storage unit 13.
The secondary battery 11 is, for example, a lithium ion secondary battery. The industrial vehicle 1 drives a traveling motor (not shown) and a cargo handling motor (not shown) using electric power from the secondary battery 11 as a driving force.

The battery control unit 12 monitors the remaining capacity, temperature, and the like of the secondary battery 11 and transmits the information to the charger / discharger 2, the material handling management device 6, the power management device 7, and the like as necessary.
The memory | storage part 13 memorize | stores the identification information regarding the said industrial vehicle 1, operation schedule information, a charging / discharging schedule, etc., for example.

  The charger / discharger 2 includes a power conversion device 21, a control unit 22, and the like. When the secondary battery 11 is connected to the charge / discharge terminal, the power conversion device 21 converts the DC power from the secondary battery 11 into AC power and supplies it to the power network 50 to discharge the secondary battery 11. The secondary battery 11 is charged by converting AC power from the power network 50 into DC power and supplying it to the secondary battery 11.

  When the secondary battery 11 is connected, the control unit 22 acquires vehicle identification information, a charge / discharge schedule, and the like stored in the storage unit 13 of the secondary battery 11, and the secondary battery according to the acquired charge / discharge schedule. The power conversion device 21 is controlled so that 11 charging or discharging is performed. Further, the control unit 22 may transmit information related to the secondary battery (for example, remaining capacity, deterioration information, etc.) to the power management apparatus 7 together with the identification information of the industrial vehicle 1.

The power receiving / transforming facility 30 distributes the electricity supplied from the power receiving point of the power network 50 to the load facility in the distribution center B which is the management target of the SLEMS 10. Here, examples of the load facility include an air conditioner, an elevator, and an in-facility electrical device that are powered by illumination or on-premises wiring. The power conversion device 21 of the charger / discharger 2 is also a load facility.
In addition, the power receiving / transforming equipment 30 has a reverse power flow function for the purpose of selling power, and also includes power meters for power sale and demand, and charging / discharging measured by these power meters. The amount of power is transmitted to the power management device 7.
In addition, it is good also as a structure connected with the electric power network 50 by providing the electric power receiving equipment and electric power feeding equipment which become a separate system | strain by electric power receiving and electric power feeding according to the electric power equipment condition of the distribution center B, etc.

  As described above, the secondary battery 11 mounted on the industrial vehicle 1 can receive power from the power network 50 (purchase power) and supply power to the power network 50 (power sales) via the charger / discharger 2. It is said that. The power network 50 only needs to include at least one of a power generation facility and a load facility, and examples thereof include a commercial power source and a smart energy network. The smart energy network is a network that realizes mutual interchange of electricity and heat (steam, etc.) by connecting an electric power system provided by an electric power company, a distributed power source, and a consumer. Examples of distributed power sources include wind power generation facilities, power generation facilities using solid oxide fuel cells, gas engine power generation facilities, and the like. In the following, a case where a smart energy network is adopted as the power network 50 will be described.

  The warehouse management device 3, the transport / delivery management device 5, the material handling management device 6, and the power management device 7 are all computers, such as a CPU (Central Processing Unit), a RAM (Random Access Memory), and a ROM (Read Only Memory). ), And a computer-readable storage medium. A series of processes for realizing various functions, which will be described later, is stored in a storage medium or the like in the form of a program as an example, and the CPU reads the program into a RAM or the like to perform information processing / arithmetic processing. By executing, various functions are realized. The program is preinstalled in a ROM or other storage medium, provided in a state stored in a computer-readable storage medium, or distributed via wired or wireless communication means. Etc. may be applied. The computer-readable storage medium is a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like.

FIG. 4 is a functional block diagram showing functions provided in the warehouse management apparatus 3, FIG. 5 is a functional block diagram showing functions provided in the transport delivery management apparatus 5, and FIG. 6 is a function showing functions provided in the material handling management apparatus 6. FIG. 7 is a functional block diagram showing functions of the power management apparatus 7.
The warehouse management device 3 is a device that comprehensively manages products stored in the warehouse, and various functions are roughly classified into a management analysis function and a work management function.
For example, the management analysis system includes a demand prediction unit 31, an inventory planning unit 32, a logistics KPI (Key Performance Indicators) unit 33, a resource management unit 34, and the like. As a work management system, an arrival management unit 41, a work management unit 42, a system linkage unit 43, a progress management unit 44, an inventory management unit 45, a shipment management unit 46, a master management unit 47, an information processing unit 48, and the like are provided. ing.

The transport / delivery management device 5 is a device that comprehensively manages delivery between a distribution center and a business partner, and between a distribution center and a delivery destination, for example, a vehicle allocation planning unit 51, a delivery route formulation unit 52, and the like. It has.
The material handling management device 6 is a device that comprehensively manages the operation of the industrial vehicle 1 and includes, for example, an operation schedule creation unit 61 and the like. The operation schedule creation unit 61, for example, optimizes the movement of goods in the distribution center and optimizes the handling of goods based on the result of inventory management demand prediction executed by the warehouse management device 3, so An operation schedule for each industrial vehicle 1 is created in consideration of storage, transportation, picking, aggregation, sorting, inspection, and the like.

The power management device 7 is a device that performs energy management using the industrial vehicle 1. For example, the operation management information acquisition unit 71, the power supply information generation unit 72, the schedule generation unit 73, the power demand information acquisition unit 74, and the period power supply consideration An acquisition unit 75, a power supply information acquisition unit 76, a period consumption consideration acquisition unit 77, a schedule change unit 78, and a storage unit 79 are provided.
The power management device 7 also performs energy management of other load facilities distributed from the power receiving / transforming facility 30.

  The operation management information acquisition unit 71 acquires operation management information for a plurality of industrial vehicles 1. The operation management information includes a work time (operation start scheduled time and operation end scheduled time) of at least one industrial vehicle 1. For example, the operation management information acquisition unit 71 acquires the operation schedule created by the operation schedule creation unit 61 of the material handling management device 6 as operation management information.

The power supply information creation unit 72 creates power supply information for each industrial vehicle 1 using the operation management information acquired by the operation management information acquisition unit 71. The power supply information includes, for example, whether or not power can be supplied to the power network 50, a time zone during which power can be supplied, and the amount of power that can be supplied.
For example, the power supply information creation unit 72 selects the remaining capacity as the charge state quantity of the secondary battery 11 from the operation management information of each industrial vehicle 1, and the discharge lower limit value (for example, the remaining capacity 30%) based on the remaining capacity. For each industrial vehicle 1 that has not yet reached, a non-operating period (for example, a standby time zone) is extracted, and that period is set as a time zone during which power can be supplied.
The power supply information creation unit 72 estimates the power consumption for each operation (operation) based on the operation time and work content of each industrial vehicle 1, and the estimated power consumption and the secondary battery 11 at the start of operation. The remaining capacity at the end of operation is estimated from the remaining capacity. Then, surplus power is calculated from the estimated remaining capacity at the end of operation and the discharge lower limit value of the secondary battery 11 (for example, the remaining capacity of 30%), and the calculated surplus power is set as an amount of power that can be supplied.
In addition, when the estimated remaining capacity at the end of operation is equal to or less than a preset threshold, the power supply information creation unit 72 determines that power supply is not possible because there is no merit of power supply.
In addition, the power supply information creation unit 72 adds the estimated power consumption of the industrial vehicle in the power supply distribution center and the predicted power demand of the other load facility based on the power demand prediction of the other load facility in the distribution center managed by the SLEMS 10. When the estimated maximum power consumption (demand) is equal to or greater than the contract maximum power consumption, priority may be given to peak cut of the load facility, and it may be determined that power cannot be supplied to the outside of the power receiving point.

The schedule creation unit 73 creates schedules for a plurality of industrial vehicles 1 using the operation management information acquired by the operation management information acquisition unit 71 and the power supply information generated by the power supply information generation unit 72. The schedule includes, for example, at least one of a charge / discharge schedule and an operation schedule. Further, the schedule creation unit 73 may further create a schedule other than the charge / discharge schedule and the operation schedule, for example, a management schedule related to maintenance inspection / repair maintenance of the industrial vehicle itself. In this case, since the industrial vehicle 1 that is being maintained and inspected is not subject to operation management (becomes line-off), the schedule creation unit confirms and registers the number of industrial vehicles 1 that can be operated according to this management schedule. Above, you may make it create a charging / discharging schedule and an operation schedule.
For example, the schedule creation unit 73 can acquire or estimate an operating time zone, a chargeable / dischargeable time zone, an estimated power consumption amount, a surplus power amount, and the like of each industrial vehicle 1 from the acquired information. While collating these pieces of information among a plurality of industrial vehicles 1, considering the number of chargers / dischargers 2, the charge / discharge timing of the industrial vehicles 1 in each charger / discharger 2 is not overlapped. Create a charge / discharge schedule. Here, the schedule creation unit 73 may create a charge / discharge schedule by further using power demand information described later.
The schedule creation unit 73 stores the created schedule (for example, charge / discharge schedule) of each industrial vehicle 1 and the identification information of each industrial vehicle 1 in the storage unit 79 in association with each other.

The power demand information acquisition unit 74 acquires power demand information of the power network 50. The power demand information is information indicating, for example, a power supply evaluation value related to power supply in the power network 50 and time information, and shows, for example, the transition of the power supply evaluation value in each day, January, 1 year, and each season. Information.
The power supply evaluation value is, for example, power supply consideration for power supply from the secondary battery 11 mounted on the industrial vehicle 1 to the power network 50, and is determined using the power demand and power supply in the power network 50 as parameters. For example, the higher the power demand for power supply, the greater the amount of consideration. The power supply consideration is not limited to the price, but may be a point that can be used only between a specific trade area, a specific industry, or a specific job, a virtual currency, a cryptocurrency, or the like.
The power demand information acquisition unit 74 can acquire power demand information from, for example, a CEMS that comprehensively manages the receipt and supply of energy in the power network 50.

  The period power supply consideration acquisition unit 75 uses the schedule (for example, charge / discharge schedule) created by the schedule creation unit 73 and the power demand information acquired by the power demand information acquisition unit 74 to supply power to the power network 50 in a predetermined period. Acquire the period power supply consideration for power supply. The period power supply consideration acquisition unit 75 extracts, for example, a time zone in which each industrial vehicle 1 supplies power and a predicted amount of power to be supplied from the charge / discharge schedule, and the extracted information, time, and power supply consideration are associated with each other. The period consideration in a predetermined period (for example, 1 day, 1 week, 1 month, 1 year, etc.) is calculated using the power demand information.

The power supply information acquisition unit 76 acquires power demand information of the power network 50. The power demand information is information indicating, for example, a power reception evaluation value related to power reception in the power network 50 and time information, and shows, for example, the transition of the power reception evaluation value in each season for 1 day, January, 1 year. Information.
The power reception evaluation value is, for example, power reception consideration for power reception from the power network 50 to the secondary battery 11 mounted on the industrial vehicle 1, and is determined using the power demand and power supply in the power network 50 as parameters. For example, when the above-mentioned power supply consideration is considered as a positive value, the power reception consideration increases toward the negative side as the power demand for power supply is higher.
The power supply information acquisition unit 76 can acquire power supply information from, for example, a CEMS that performs overall management of energy reception and supply in the power network 50.

  The power supply information acquisition unit 76 may acquire power supply information from the wholesale power transaction market. In this case, for example, the receiving consideration is the contract price in the corresponding time zone of the wholesale power trading market on the day before the execution date of the schedule, the contract price in the corresponding time zone of the wholesale power trading market on the execution date of the schedule, and the schedule, respectively. One of the contract prices in the corresponding time zone of the forward market of the wholesale power market corresponding to the execution date, or a price determined based on these contract prices.

  The period consumption consideration acquisition unit 77 uses the charge / discharge schedule created by the schedule creation unit 73 and the power supply information acquired by the power supply information acquisition unit 76 to use the period consumption consideration for receiving power from the power network 50 in a predetermined period. To get. The period consumption consideration acquisition unit 77 extracts, for example, a time zone in which each industrial vehicle 1 receives power and a predicted amount of power to be received from the charge / discharge schedule, and the extracted information, time, and power reception consideration are associated with each other. The period consumption consideration in a predetermined period (for example, 1 day, 1 week, 1 month, 1 year, etc.) is calculated using the current power supply information.

  The schedule changing unit 78 changes the charge / discharge schedule created by the schedule creating unit 73 using the difference between the period power supply consideration and the period consumption consideration. For example, in the charge / discharge schedule created by the schedule creation unit 73, the schedule change unit 78 creates a plurality of charge / discharge schedule candidates with different change locations, and a plurality of schedule change creation units 78 based on a predetermined criterion. A schedule candidate selection unit that selects one of the schedule candidates.

  Here, the predetermined standard is, for example, whether or not power can be supplied to the power network 50, a time zone in which power can be supplied to the power network 50, an amount of power that can be supplied to the power network 50, and period power supply consideration. Includes at least one of the differences from the period consumption consideration.

  Note that the schedule changing unit 78, for example, at least one of a time zone during which power can be supplied to the power network 50, an amount of power that can be supplied to the power network 50, and a difference between the period supply consideration and the period consumption consideration. The charging / discharging schedule created by the schedule creating unit 73 may be optimized so that the evaluation function is an element and the result of the evaluation function is maximized. In addition, when there are a plurality of elements, weighting according to importance may be performed. Each schedule changed by the schedule changing unit 78 is stored in the storage unit 79 in association with the identification information of each industrial vehicle 1.

  Next, a procedure of processing executed by the power management device 7 in the SLEMS 10 having the above configuration will be described with reference to FIG. FIG. 8 is a flowchart showing a processing procedure executed by the power management apparatus 7 according to the present embodiment.

  First, operation management information (for example, operation schedule) of a plurality of industrial vehicles 1 operating in the distribution center B is acquired by the operation management information acquisition unit 71 of the power management device 7 (step SA1). The power supply information for each industrial vehicle 1 is generated by the power supply information generation unit 72 (step SA2). Next, the charging / discharging schedule of each industrial vehicle 1 is created by the schedule creation unit 73 using the power supply information created in step SA2, and is stored in the storage unit 79 in association with the identification information of each industrial vehicle 1. (Step SA3).

  Subsequently, the power demand information of the power network 50 is acquired by the power demand information acquisition unit 74, and the power supply information of the power network 50 is acquired by the power supply information acquisition unit 76 (step SA4). Subsequently, the period power supply consideration in the predetermined period (for example, one day) is calculated by the period power supply price acquisition unit 75 using the power supply price included in the power demand information and the charge / discharge schedule created by the schedule creation unit 73. Calculated (step SA5). Similarly, the period consumption consideration for a predetermined period (for example, one day) is calculated by the period consumption consideration acquisition unit 77 using the power reception consideration and the charge / discharge schedule included in the power supply information (step SA6).

  Next, the schedule change unit 78 changes the charge / discharge schedule created by the schedule creation unit 73 (for example, optimization according to a predetermined purpose) using the difference between the period power supply consideration and the period consumption consideration. (Step SA7). The changed charge / discharge schedule is associated with the identification information of each industrial vehicle 1 and stored in the storage unit 79 (step SA8).

  Further, the changed charge / discharge schedule is transmitted to the material handling management device 6. In the material handling management device 6, for example, the timing of charging / discharging according to the charging / discharging schedule is incorporated in the operation schedule, and the operation and charging / discharging of each industrial vehicle 1 are managed based on the operation schedule (step SA9). .

  FIG. 9 shows an example of an operation schedule when a lead battery is adopted as a secondary battery mounted on an industrial vehicle and conventional power management is performed. FIG. 10 shows a lithium ion secondary battery 11 as a secondary battery 11 mounted on the industrial vehicle 1. An example of an operation schedule when a secondary battery is employed and power management is performed by the power management apparatus 7 according to the present embodiment is shown. 9 and 10, as for the charge / discharge amount of the secondary battery, a positive value indicates charge, that is, power reception, and a negative value indicates discharge, that is, power supply. In any case, the work amount in each predetermined period (from 4 o'clock to 10 o'clock, from 10 o'clock to 16 o'clock, from 16 o'clock to 21 o'clock) is set to 15, 10, 12 (no unit), respectively, and 0 The amount of work is set to zero in the time zone from 2 o'clock to 4 o'clock and from 22:00 to 0 o'clock.

  FIG. 11 is a graph showing the power consumption of the load facilities of the entire distribution center B when the operation is performed according to the operation schedule shown in FIG. 9, and FIG. 12 is an operation schedule according to the operation schedule shown in FIG. It is the graph which showed the power consumption of the whole distribution center B at the time unit when performed. 11 and 12, hatched portions (shaded portions) indicate the amount of electric power of the industrial vehicle 1, where a positive value indicates power reception and a negative value indicates power supply. In FIG. 12, the broken line graph indicates the transition of the power consumption when the operation is performed according to the operation schedule illustrated in FIG. 9, that is, the transition of the power consumption illustrated in FIG. 11. The line graph represents the transition of the power consumption when the operation is performed according to the operation schedule shown in FIG.

In the operation schedule shown in FIG. 9, charging is performed for a long time due to the characteristics of the lead battery, which takes a relatively long time for charging, and the charging time or standby time is set in a time zone where no work occurs. On the other hand, in the operation schedule shown in FIG. 10, the power management device 7 makes efficient use of the power by switching the work and charging cycle finely by taking advantage of the characteristics of the lithium ion secondary battery that can be rapidly charged. It is used for. Further, for example, considering the power consumption (for example, one of the power demand information) in the distribution center B as a whole, in the time zone when the peak occurs, by providing the discharge time of the industrial vehicle 1, In addition, the power management apparatus 7 supplies power to the power network 50 when it is determined that there is further surplus power. This control can also be employed in the case of demand response (power consumption suppression), which is performed when the power management device 7 receives a command for suppressing the amount of demand power from an external energy management network.
Thereby, as shown in FIG. 12, the power consumption of the distribution center B as a whole can be suppressed, and peak cuts and peak shifts (for example, see C1 to C3 in FIG. 12) can be realized. . In this way, in the operation schedule shown in FIG. 10, the operation efficiency of the industrial vehicle 1 can be improved by switching the work in a relatively short time. Thereby, for example, the number of industrial vehicles can be reduced as compared with the conventional case (in FIG. 10, the industrial vehicles E are reduced).

  In the operation schedule shown in FIG. 10, the work, charging, and discharging are switched in units of one hour, but by switching the work, charging, and discharging in smaller time units, such as tens of minutes, It becomes possible to further increase the efficiency of electric power.

  As described above, according to the power management device, the power management method, and the logistics network system according to the present embodiment, the charge / discharge of the secondary battery 11 mounted on each industrial vehicle 1 is the power demand of the power network 50. It is executed according to a charging / discharging schedule determined in consideration of information and power supply information. Thereby, it is possible to effectively use the electric power stored in the secondary battery 11 of each industrial vehicle 1.

  In addition to the embodiment described above, for example, the schedule change unit 78 displays a plurality of schedule candidates created by the schedule candidate creation unit on a display device (presentation unit) provided in the power management device 7 or the like. When the information for designating any one schedule candidate is input by the user, the designated schedule candidate may be stored in the storage unit 79 as the charge / discharge schedule after the change.

  Furthermore, in this embodiment, although the case where electric power reception and electric power feeding were performed between the electric power network 50 and the secondary battery 11 was described, power transmission / reception is performed between the secondary batteries 11 which the industrial vehicle 1 mounts, for example. It is good. In this case, for example, the power management apparatus 7 ′ further includes an inter-vehicle power supply information creation unit 80 as illustrated in FIG. 13. The inter-vehicle power supply information creation unit 80 creates inter-vehicle power supply information for at least one industrial vehicle 1 using the operation management information acquired by the operation management information acquisition unit 71. The inter-vehicle power supply information includes at least one of whether power can be supplied to other industrial vehicles, a time zone in which the other industrial vehicles 1 can be supplied, and an amount of power that can be supplied to the other industrial vehicles 1. It is. Thereby, it is also possible to realize charging / discharging between vehicles based on the inter-vehicle power supply information.

DESCRIPTION OF SYMBOLS 1 Industrial vehicle 2 Charger / discharger 7, 7 'Electric power management apparatus 10 SLEMS
11 Secondary battery 50 Power network 71 Operation management information acquisition unit 72 Power supply information generation unit 73 Schedule generation unit 74 Power demand information acquisition unit 75 Period power supply consideration acquisition unit 76 Power supply information acquisition unit 77 Period consumption consideration acquisition unit 78 Schedule change unit 79 Storage unit 80 Inter-vehicle power supply information creation unit

Claims (15)

A power management device used in a logistics network system including a plurality of industrial vehicles equipped with a secondary battery capable of receiving power from a power network including at least one of power generation facilities and load facilities and supplying power to the power network. And
An operation management information acquisition unit for acquiring operation management information of the plurality of industrial vehicles;
Using the operation management information, and including a power supply information creating unit that creates power supply information based on a charge state of a secondary battery of at least one industrial vehicle,
The power management apparatus includes at least one of whether or not power supply to the power network is possible, a time zone during which power can be supplied to the power network, and an amount of power that can be supplied to the power network. Using the operation management information and the power supply information, a schedule creation unit for creating a schedule of the plurality of industrial vehicles,
The power management apparatus according to claim 1, wherein the schedule includes at least one of an operation schedule and a charge / discharge schedule. A power demand information acquisition unit for acquiring power demand information of the power network;
The power management apparatus according to claim 2, wherein the schedule creation unit creates the schedule using the power demand information.   The power management apparatus according to claim 3, wherein the power demand information includes supply consideration information for power supply to the power network.   5. The power management according to claim 4, further comprising a period supply consideration acquisition unit that acquires a period supply consideration for supply to the power network in a predetermined period using the schedule and the power demand information created by the schedule creation unit. apparatus. A power supply information acquisition unit for acquiring power supply information of the power network;
The power according to claim 5, further comprising a period consumption consideration acquisition unit that acquires a period consumption consideration for receiving power from the power network in the predetermined period using the schedule and the power supply information created by the schedule creation unit. Management device.   The power management apparatus according to claim 6, further comprising a schedule change unit that changes the schedule created by the schedule creation unit using a difference between the period power supply consideration and the period consumption consideration. The schedule change unit
In the schedule created by the schedule creation unit, a schedule candidate creation unit that creates a plurality of schedule candidates with different changed portions, and
The power management device according to claim 7, further comprising: a schedule candidate selection unit that selects one of the plurality of schedule candidates based on a predetermined criterion. The predetermined criterion is:
Whether power can be supplied to the power network,
A time period during which power can be supplied to the power network;
The power management apparatus according to claim 8, comprising at least one of an amount of power that can be supplied to the power network, and a difference between the period supply consideration and the period consumption consideration. The schedule change unit
In the schedule created by the schedule creation unit, a schedule candidate creation unit that creates a plurality of schedule candidates with different changed portions, and
The power management apparatus according to claim 7, further comprising: a presentation unit that presents a plurality of schedule candidates to a user.   The power supply consideration information includes a contract price in a corresponding time zone of the wholesale power trading market on the day before the execution date of the schedule, a contract price in a corresponding time zone of the wholesale power trading market on the execution date of the schedule, and The power management apparatus according to any one of claims 4 to 10, wherein the power management apparatus is determined based on one of contract prices in a corresponding time zone of a forward market of a wholesale power market corresponding to an execution date. An inter-vehicle power supply information acquisition unit that acquires inter-vehicle power supply information about at least one industrial vehicle using the operation management information,
The inter-vehicle power supply information includes at least one of whether power can be supplied to the other industrial vehicle, a time zone in which the other industrial vehicle can be supplied, and an amount of power that can be supplied to the other industrial vehicle. The power management apparatus according to any one of claims 1 to 11. A plurality of industrial vehicles equipped with secondary batteries capable of receiving power from and supplying power to the power network including at least one of power generation equipment and load equipment;
A logistics network system comprising: the power management apparatus according to claim 1. A plurality of industrial vehicles equipped with secondary batteries capable of receiving power from and supplying power to the power network including at least one of power generation equipment and load equipment;
An operation management information acquisition unit for acquiring operation management information of the plurality of industrial vehicles;
Using the operation management information, and including a power supply information creating unit that creates power supply information based on a charge state of a secondary battery of at least one industrial vehicle,
The logistics network system, wherein the power supply information includes at least one of a time zone in which power can be supplied to the power network and an amount of power. Obtaining operation management information of a plurality of industrial vehicles equipped with secondary batteries capable of receiving power from a power network including at least one of power generation equipment and load equipment and supplying power to the power network;
Using the operation management information to create power supply information based on a charge state of a secondary battery of at least one industrial vehicle,
The power supply method includes a power management method including at least one of whether power can be supplied to the power network, a time zone during which power can be supplied to the power network, and an amount of power that can be supplied to the power network.

Images