WO2012120736A1 - 充電制御システム - Google Patents
充電制御システム Download PDFInfo
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- WO2012120736A1 WO2012120736A1 PCT/JP2011/077172 JP2011077172W WO2012120736A1 WO 2012120736 A1 WO2012120736 A1 WO 2012120736A1 JP 2011077172 W JP2011077172 W JP 2011077172W WO 2012120736 A1 WO2012120736 A1 WO 2012120736A1
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- H—ELECTRICITY
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/63—Monitoring or controlling charging stations in response to network capacity
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
- H02J1/109—Scheduling or re-scheduling the operation of the DC sources in a particular order, e.g. connecting or disconnecting the sources in sequential, alternating or in subsets, to meet a given demand
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
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- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
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- H—ELECTRICITY
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- H—ELECTRICITY
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- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/126—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
Definitions
- the present invention relates to a charge control system, a charge control device, and a charge control method for charging a storage battery, and more particularly to a charge control system, a charge control device, and a charge control method for charging a storage battery mounted in an automobile.
- FIG. 1 is a diagram showing an example of the relationship between the daily power supply and demand power.
- the relationship between the power source power and the demand power from 0:00 to 24:00 changes with time.
- Base power supply is a power supply that is difficult to change output (adjustment power fluctuation is small), but can generate electricity cheaply. It is a type of power supply that increases when demand for power increases due to the spread of EV and PHEV. is there.
- Demand power is power consumed by consumers such as ordinary households and companies, and varies depending on the season and conditions such as weekdays or holidays. Since demand relates to human activities, there is a 24-hour periodicity, demand is high during the day, and demand tends to drop at night. The amount of power that is less than the output of the base power supply during the time when the demand power is low at night is the surplus power at night.
- Various methods have been considered in order not to waste this night surplus power.
- the pumped-storage power generation is operated at night by pumping up water and storing it as potential energy, or by lowering the nighttime electricity rate and causing the consumer to accumulate heat as a heat pump or other equipment, and the heat (for example, hot water) is stored in the daytime.
- a method of shifting the demand such as charging a surplus charge by preparing a dedicated storage battery and discharging when the charged power is insufficient is taken.
- the power generated by sunlight increases, and the sum of the power generated by the base power supply and the power generated by the solar power supply exceeds the demand power. That is, the surplus power will remain in the same manner as the surplus power at night. As with the surplus power at night, this surplus power can be used effectively without throwing away the generated power by shifting the demand well in time.
- the demand is filled using thermal power generation or the like in which the output is easily variable in a time zone in which the demand power exceeds the power generation power of the base power source.
- a method of accumulating surplus power there is a method of storing in a storage battery in addition to the method of storing by converting to mechanical energy such as the pumped-storage power generation described above.
- a large-scale storage battery such as NAS has been put into practical use and is technically possible due to its utilization, but capital investment is expensive.
- FIG. 2 is a diagram showing a simulation result of the charging speed when the charging of 50 EVs used for commuting purposes is simulated for 3 days. This simulation was performed under the condition that each EV is plugged in immediately after the trip is completed and charging is started.
- the time zone for trips by commuting almost matches each other with 50 cars, so the time zones for starting charging with the stoppage of movement almost match each other. For this reason, the charging speed is concentrated locally in a concentrated time zone. From the viewpoint of a balance between supply and demand, power generation facilities prepared for demands that are steep and have a wide fluctuation range are generally expensive. Moreover, in places where commuting EVs gather locally, such as in company parking lots, it is necessary to prepare power distribution equipment that can withstand charging power.
- Non-Patent Documents 1 and 2 technical studies have been made to use EV batteries that are expected to be widely used for stable operation of electric power systems (for example, see Non-Patent Documents 1 and 2).
- Non-Patent Documents 1 and 2 propose a method of suppressing output fluctuations of a renewable power source by discharging a storage battery mounted on an EV from the power system and discharging the battery to the power system.
- This method is an ultimate method capable of absorbing a short-period supply-demand balance fluctuation of several Hz.
- the main purpose of using the storage battery mounted on the EV is to move (run) the EV, the discharge to the power system, which is another purpose, uses the life of the rechargeable battery. Therefore, it becomes a demerit for EV owners.
- many EVs and PHEVs are also used from the viewpoint of the influence on the system when considering only the charge necessary for the movement of the EV and PHEV, and the use of a storage battery for time shift of demand corresponding to surplus power. It is considered essential to manage the PHEV charging schedule.
- the storage battery mounted on the EV is a means for moving the EV, and therefore, the stationary storage battery and the typical heat pump for the time shift of the night demand are not always connected to the power system.
- the stationary storage battery and the typical heat pump for the time shift of the night demand are not always connected to the power system.
- An object of the present invention is to provide a charge control system, a charge control device, and a charge control method that solve the above-described problems.
- the charge control system of the present invention is A power distribution device that distributes power; a plurality of interface devices connected to the storage battery to charge a storage battery mounted on a vehicle using the power distributed from the power distribution device; and charging in the interface device is controlled
- a charge control system composed of a charge control device
- the charging control device based on each of the plurality of interface devices, based on a distribution system connection time that is a time when the interface device and the storage battery are connected and a distribution system disconnection time that is a time when the interface device is disconnected
- the charging of the storage battery by the device is controlled.
- the charge control device of the present invention is A charge control device that controls charging in a plurality of interface devices connected to the storage battery in order to charge the storage battery mounted on the vehicle using the distributed power, In each of the plurality of interface devices, based on a distribution system connection time that is a time when the interface device and the storage battery are connected and a distribution system disconnection time that is a time when the interface device is disconnected, It has a control part which controls charge.
- the charge control method of the present invention includes: A charge control method for controlling charging in a plurality of interface devices connected to the storage battery in order to charge the storage battery mounted on the vehicle using the distributed power, A process of charging the storage battery using the plurality of interface devices; In each of the plurality of interface devices, based on a distribution system connection time that is a time when the interface device and the storage battery are connected and a distribution system disconnection time that is a time when the interface device is disconnected, The process which controls charge is performed.
- the adjustment power of the power system can be increased without depriving the owner's freedom.
- FIG. 3 is a diagram showing an embodiment of the charge control system of the present invention.
- the host power system command device 100 performs supply and demand planning and charging scheduling.
- the upper power system command apparatus 100 transmits signals related to the above-described planning and scheduling control to the interface apparatuses 400-1 to 400-m via the communication network 800. Further, the upper power system command device 100 may be installed in a power supply company.
- Distribution device 200 distributes power. Specifically, the power distribution apparatus 200 supplies power to the interface apparatuses 400-1 to 400-m via the power distribution system 700.
- Charging control device 300 controls charging to storage batteries mounted on EVs 500-1 to 500-n (EV500-1 to 500-3 in FIG. 3) connected to interface devices 400-1 to 400-m. To do.
- the phrase “charging of EVs 500-1 to 500-n” means “charging of storage batteries mounted on EVs 500-1 to 500-n”. The same applies to descriptions such as “connection to EVs 500-1 to 500-n”.
- FIG. 4 is a diagram illustrating an example of an internal structure of the charging control apparatus 300 illustrated in FIG.
- control unit 310 is provided with a control unit 310, a storage unit 320, an input unit 330, and an output unit 340, as shown in FIG.
- the control unit 310 controls charging to the EVs 500-1 to 500-n connected (plugged in) to the interface devices 400-1 to 400-m. Specifically, the control unit 310 transmits electric power supplied from the power distribution apparatus 200 to the interface apparatuses 400-1 to 400-m via the power distribution system 700, and is connected to the interface apparatuses 400-1 to 400-m.
- charging -1 to 500-n predetermined information is acquired from EVs 500-1 to 500-n, charging is scheduled based on the information, and charging is performed according to this schedule. How to perform scheduling will be described later.
- control unit 310 is provided with a CPU 311, a memory interface unit 312, an I / O interface unit 313, and a communication control unit 314. These are connected using a CPU bus.
- the CPU 311 performs the scheduling described above.
- the memory interface unit 312 has an interface function with the storage unit 320.
- the I / O interface unit 313 has an interface function between the input unit 330 and the output unit 340.
- the communication control unit 314 communicates with the interface devices 400-1 to 400-m via the communication network 800. At this time, when EVs 500-1 to 500-n are connected to the interface devices 400-1 to 400-m, the communication control unit 314 passes through the communication network 800 and the interface devices 400-1 to 400-m. Communication is performed with the EVs 500-1 to 500-n.
- the storage unit 320 includes a main storage device, a recording medium, and a data storage device.
- the main storage device temporarily holds information necessary for the processing of the CPU 311.
- the recording medium stores a program for causing the CPU 311 to execute the processing of the present invention.
- the data storage device stores information on EV 500-1 to 500-n, and information such as EV 500-1 to 500-n traveling pattern data for preliminary plan scheduling created based on the data. Or accumulate.
- the input unit 330 inputs commands and information to the control unit 310.
- the output unit 340 outputs the processing result of the control unit 310.
- the interface devices 400-1 to 400-m use the power distributed from the power distribution device 200 to charge the EVs 500-1 to 500-n connected to the interface devices 400-1 to 400-m.
- FIG. 5 is a diagram showing an example of the internal structure of the interface device 400-1 shown in FIG. The same applies to the internal structure of the interface devices 400-2 to 400-m shown in FIG. Currently, EV 500-1 is connected to interface device 400-1.
- the interface device 400-1 shown in FIG. 3 is provided with a switch 401 and an opening / closing control unit 402.
- One of the switches 401 is connected to the power distribution system 700 and the other is connected to the EV 500-1, and is a switch that performs connection / disconnection based on an opening / closing control signal output from the opening / closing control unit 402. It is.
- the switch 401 may not be a simple opening / closing, but may be a DC power source that can be controlled with a variable charging current.
- the control value is a current value or voltage value in a variable range instead of opening and closing.
- Open / close control unit 402 is connected to communication network 800 and EV 500-1.
- the open / close control unit 402 acquires predetermined information from the EV 500-1, and transmits the acquired information to the charging control apparatus 300 via the communication network 800.
- the predetermined information is information such as a storage amount (state of charge: SOC) of a storage battery mounted on the EV 500-1, an output voltage of the storage battery, and a temperature of the storage battery.
- the open / close control unit 402 outputs an open / close control signal to the switch 401 based on the control signal for charge scheduling transmitted from the charge control device 300 via the communication network 800, thereby opening / closing the switch 401. I do.
- EV500-1 to 500-n are electric vehicles equipped with storage batteries.
- the EVs 500-1 to 500-n are charged by connecting to the interface devices 400-1 to 400-m.
- Radio system base station 600 is connected to communication network 800, and is not connected to interface devices 400-1 to 400-m, and is a moving EV (EV 500-4, 500-n in FIG. 3). Wireless communication between the two. Through this wireless communication, the wireless system base station 600 acquires the predetermined information described above from the EV (EV500-4, 500-n in FIG. 3) and transmits it to the charging control apparatus 300.
- the power distribution system 700 connects the power distribution device 200 and the interface devices 400-1 to 400-m, and supplies power from the power distribution device 200 to the interface devices 400-1 to 400-m.
- the communication network 800 connects the host power system command device 100, the charging control device 300, the interface devices 400-1 to 400-m, and the radio system base station 600, and data and control are established between these devices. It is a communication path for exchanging signals.
- the communication network 800 may be configured using wireless or may be configured using wired.
- the communication network 800 only needs to be a communication line that operates at a communication speed corresponding to the length of the time unit of charge scheduling and a response delay, and does not necessarily need to be super-high speed. Determined by balance with necessary requirements.
- FIG. 6A is a diagram illustrating an example of a temporal change in surplus power described with reference to FIG.
- Adjust so that surplus power (demand demand) as shown in FIG. 6A is used effectively.
- the demand request is complicated by the curve as shown in FIG. 6A, so the case where the demand demand is monotonically increasing or the demand demand is constant (flat) is taken as an example. explain.
- FIG. 6B is a diagram illustrating an example of a demand request that increases monotonously with respect to time.
- FIG. 6C is a diagram illustrating an example of a constant demand request with respect to time.
- the EV While the EV is stopped, the EV is always connected to the power distribution system 700 (interface devices 400-1 to 400-m), and can be charged at any time during that time (2 ) At least in real time, information on the time when the EV is stopped and connected to the distribution system 700 (distribution system connection time), the next departure time (distribution system disconnection time), and the charge amount (SOC) of the EV storage battery is charged. (3) The control of charging is performed only by the charging time, and the amount of charge corresponding to the charging time is determined by the SOC for each EV. The control device 300 can acquire the EV from the EV via the interface devices 400-1 to 400-m and the communication network 800. The condition is that it can be associated with a function. In addition, after the charging schedule for this system is implemented, (4) Tracing the required demand curve (5) At the scheduled departure time of each EV, it is a necessary requirement that the charging is completed to a predetermined SOC.
- the distribution system connection time and distribution system disconnection time of (2) of the above-mentioned conditions may be statistically estimated (calculated) based on data accumulated in the past for each EV, or the EV has stopped. Sometimes it is also possible to have the EV owner set. In the following description, an example set by the EV owner is given.
- the charging speed (charging power) is constant for all EVs without depending on the SOC of the storage battery for the sake of simplification. For example, when a 18 kWh storage battery is fully charged from 0 kWh, if the charging speed is set to 3 kW, the charging time is 6 hours.
- the subject of charge scheduling in the present charge control system is to determine in which time zone the charge time of 6 hours is assigned.
- FIG. 7 is a diagram showing an example of a distribution system connection pattern of six EVs 1 to 6.
- the distribution system connection time (shown in black in the figure) and distribution system connection release (distribution system disconnection) time (shown in black circles in the figure) Each) is unique. It can be said that this distribution system connection pattern is a running pattern.
- Such travel data can be stored in a storage device in the storage unit 320 in this system.
- the average driving pattern on weekdays can be statistically organized, the average driving pattern can be used to make a charge scheduling plan in advance.
- the description will be made on the assumption that there is such a travel pattern.
- FIG. 8 is a diagram showing a charging scheduling method executed in real time so as to follow a curve of demand demand that is monotonically increasing.
- the target demand is divided into a grid pattern by unit time and unit charging speed (charging speed of one EV), and charging of the target demand is performed at each time (step).
- a laying-type algorithm (charging only the stacked EV) is used.
- this method assigns charging priority to each EV, and in order from the highest priority, the charging is laid and stacked so as not to exceed the preset target demand, and the target demand is increased. For the EV after the exceeded EV, the charging is carried over at the next time (referred to as laying). For example, for all EVs connected to the power distribution system 700 at the current time, the priority is higher as the SOC is smaller or the time from the current time to the power distribution system disconnection time (remaining connection time) is shorter. Can be used, and the product of the reciprocal of SOC and the reciprocal of the remaining connection time can be used as a priority index to give priority.
- EVs connected to the distribution system 700 at t1 are EV1, EV2, EV5, and EV6.
- the priority order is determined in the order of the shortest remaining connection time. That is, the priorities are assigned in the order of EV6, EV2, EV1, EV5 from the highest priority.
- EV3 is newly connected and EV6 is disconnected (disconnected). Since EV5 has a lower priority than newly connected EV3, EV5 is carried over again and charging of EV2, EV1, and EV3 is executed at time t2.
- this method is an effective method from the viewpoint of calculation amount and scalability.
- the driving data is divided into three groups for commuting, entertainment, business, and usage, changing the characteristics of the driving pattern, and the average driving of each group so that it is actually close to the current EV driving pattern.
- the time and the average stop time were selected, and the variation of each EV was generated by giving a random number.
- FIG. 9A is a diagram showing a simulation result when a lower demand demand target is set.
- FIG. 9A it can be seen that charging is performed by suddenly increasing / decreasing the target in a square shape.
- the reason for the horn shape at this time is that the EV group for commuting has been charged in a concentrated manner. In other words, it should have been processed in the time before this time, but the required amount of power required for the desired charge amount was small.
- FIG. 9B is a diagram showing a simulation result when a higher demand demand target is set.
- the demand curve at the previous time is slightly increased or decreased to a certain degree. This can be solved by using the “look-ahead target correction method” that balances the supply and demand of the time spent. If attention is paid so that the demand demand curve does not change suddenly, a slight increase or decrease in the demand curve is problematic for the purpose of maintaining the state of the power system with high adjustment power, which is the original purpose. Absent.
- FIG. 10 is a diagram for explaining a first embodiment of the “prefetch target correction method” applied in the scheduling system.
- the required demand target total charging speed of the required demand target
- the required demand target total charging speed of the required demand target
- the required demand target total charging speed of the required demand target
- the required demand target total charging speed of the required demand target as an initial value is defined as flat.
- the number of EVs that may be charged at a time that is a certain ⁇ t time ahead of the current time t1 at which the laying is performed is estimated.
- a charging schedule is established with the distribution system disconnection (distribution system disconnection) as a full charge end time.
- the number of EVs that are charged at a time that is ⁇ t seconds ahead is counted, and the total charging speed is obtained as the estimated total charging speed at this time.
- the above processing is repeated step by step for each time. Thereby, it may be considered that the demand that may occur in the future is shifted in time according to the previous time. By performing such processing, it is naturally difficult to exceed the required demand target.
- ⁇ t is preferably set to a time shorter than the average stop time of all EVs to be controlled. By doing so, the number of EVs that can be counted is reduced, which is convenient.
- a plurality of ⁇ t may be set. For example, if two types of ⁇ t are set, the accuracy can be improved by executing two types of ⁇ t “prefetch target correction” methods alternately in time, or by executing the methods at the same time.
- FIG. 11A is a diagram showing the results when the required demand target is set to a constant value of 60 kW for 3 days.
- FIG. 11B is a diagram showing a result of charging scheduling for concentrating charging at 200 kW for 3 hours around noon on the second day.
- the required demand target is 50 kW.
- FIG. 12 is a diagram for explaining the principle of the second embodiment of the “prefetch target correction method” applied in the scheduling system.
- FIG. 12 plots a stop time zone (running pattern) for EVs that stop in the look-ahead target correction period until the time ⁇ t elapses from the current time.
- the rectangular frame shown in the stop time zone indicates the required charge amount at the time when each EV having a constant charge power height stops.
- This frame is temporarily arranged such that the time when the traveling pattern is disconnected from the power distribution system is the final time.
- the charging power is expressed as w 1 , w 2 , They can be classified as w 3 and w 4 .
- w 1 is the EV that is connected to the current time, showing the charge amount of power that needs to be charged into the target correction period.
- w 2 are indicated by EV connected to the current time, the charge amount of power may be charged after the target correction period (can also be charged in the target correction period).
- w 3 and w 4 are not connected to the current time, but indicate the amount of charging power corresponding to each of w 1 and w 2 of the EV that stops within the target correction period.
- W 1 is the sum of the amounts counted as w 1 for all EVs, and other W 2 to W 4 are similarly defined.
- W 3 and W 4 are not known at the current time, it is necessary to predict them by some method. If the past running pattern of the EV under management can be grasped as the configuration of the charging system, it can be predicted using a statistical method or the like.
- FIG. 13 is a diagram for explaining an example of a method of allocating the insufficient charging power amount ⁇ W within the target correction period ⁇ t.
- ⁇ P ⁇ W / ⁇ t obtained by dividing ⁇ W by a target correction period ⁇ t is added to a target value between ⁇ t to be a new target.
- it may be distributed with weighting the time.
- FIG. 14 is a diagram showing a demand target curve of total charge set in advance.
- FIG. 15 is a graph showing a result of a temporal change in the total charging power for three days when the laying scheduling is performed without implementing the second example of the “prefetch target correction method” under the above-described conditions.
- FIG. 16 is a graph showing the result of temporal change in the total charge power for three days when the second example of the “prefetch target correction method” is executed under the above-described conditions and the spread scheduling is executed.
- the peak value was slightly lower than the previous target for 3 days, but a sharp decrease could be avoided. For this reason, it is possible to maintain a balance between supply and demand and to satisfy the full charge requirement of EV users without imposing a heavy burden on the output adjustment processing of the generator.
- the charging control system that executes real-time charging scheduling for the EV of the present invention has been described above.
- a travel pattern of the next day can be predicted using past information (statistical information). Making a charging plan based on that information is sufficient time because it is a priori, is an optimization problem, and can be solved using generally known solutions.
- the adjustment power of the electric power system can be increased without depriving the degree of freedom of the EV owner.
- this charging control system is applied to a large-scale parking lot, the electrical capacity of equipment necessary for the charging facility can be minimized by scheduling the charging output to be distributed.
- demand response can be made to the previous day or real-time power charge presentation given by the power company, and charging can be performed with low-priced power. In this way, the present charging control system can be applied to matters that have value in the form (waveform) of the target demand.
- the EV has been described so far, but it may be an automobile (for example, a PHEV) that basically uses a storage battery as a power source and needs to be plugged in and charged with electric power from the distribution system. And PHEV can be mixed and controlled to achieve the same thing.
- a PHEV a PHEV that basically uses a storage battery as a power source and needs to be plugged in and charged with electric power from the distribution system.
- PHEV can be mixed and controlled to achieve the same thing.
- the charging control device 300 is an interface device that is estimated to be charged in a time shorter than the average time from the distribution system connection time to the distribution system disconnection time in the plurality of interface devices 400-1 to 400-m. Modify the target demand based on the number.
- the processing performed by each component provided in the above-described charging control apparatus 300 may be performed by a logic circuit that is produced according to the purpose. Also, a computer program (hereinafter referred to as a program) describing the processing contents as a procedure is recorded on a recording medium that can be read by the charging control device 300, and the charging control device 300 is caused to read the program recorded on the recording medium. , May be executed.
- the recording medium readable by the charging control apparatus 300 includes a storage unit 320 built in the charging control apparatus 300, in addition to a transferable recording medium such as a floppy (registered trademark) disk, a magneto-optical disk, a DVD, and a CD. It refers to memory such as ROM and RAM, HDD, and the like.
- the program recorded on the recording medium is read by the control unit 310 provided in the charging control apparatus 300, and the same processing as described above is performed under the control of the control unit 310.
- the control unit 310 operates as a computer that executes a program read from a recording medium on which the program is recorded.
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Abstract
Description
電力を配電する配電装置と、該配電装置から配電される電力を用いて自動車に搭載された蓄電池を充電するために該蓄電池と接続される複数のインタフェース装置と、前記インタフェース装置における充電を制御する充電制御装置とから構成された充電制御システムにおいて、
前記充電制御装置は、前記複数のインタフェース装置それぞれにおける、該インタフェース装置と前記蓄電池とが接続される時刻である配電系統接続時刻と切断される時刻である配電系統切断時刻とに基づいて、前記インタフェース装置による前記蓄電池への充電を制御することを特徴とする。
配電される電力を用いて自動車に搭載された蓄電池を充電するために該蓄電池と接続される複数のインタフェース装置における充電を制御する充電制御装置であって、
前記複数のインタフェース装置それぞれにおける、該インタフェース装置と前記蓄電池とが接続される時刻である配電系統接続時刻と切断される時刻である配電系統切断時刻とに基づいて、前記インタフェース装置による前記蓄電池への充電を制御する制御部を有する。
配電される電力を用いて自動車に搭載された蓄電池を充電するために該蓄電池と接続される複数のインタフェース装置における充電を制御する充電制御方法であって、
前記複数のインタフェース装置を用いて、前記蓄電池を充電する処理と、
前記複数のインタフェース装置それぞれにおける、該インタフェース装置と前記蓄電池とが接続される時刻である配電系統接続時刻と切断される時刻である配電系統切断時刻とに基づいて、前記インタフェース装置による前記蓄電池への充電を制御する処理とを行う。
(1)EVが止まっている間、EVは常に配電系統700(インタフェース装置400-1~400-m)と接続されており、その間のどこの時間においても充電が可能になっていること
(2)少なくともリアルタイムでは、EVが停止して配電系統700と接続された時刻(配電系統接続時刻)、次に出発する時刻(配電系統切断時刻)およびEVの蓄電池の充電量(SOC)の情報を充電制御装置300がインタフェース装置400-1~400-mおよび通信ネットワーク800を介してEVから取得できること
(3)充電の制御は充電時間のみで行い、充電時間に対応する充電量はEVごとにSOCの関数で対応付けできること
を条件とする。さらに、本システムの充電スケジューリングが実施された後には、
(4)要求のあった需要の曲線をトレースすること
(5)おのおののEVの出発予定時刻においては、定められたSOCまで充電が完了していること
が必要要件となる。
W1+W3≦WT≦W1+W2+W3+W4 (式1)
という関係にあれば、元の目標を修正する必要がないと判断することができる。ここで、W1は、全EVについてw1とカウントされる量を合計したものであり、その他W2~W4についても同様に定義する。
W1+W3≧WT
であれば、
ΔW=W1+W3-WT
と与えられる不足の充電電力量ΔW分を、目標修正期間Δt内に割り振る。
WT≧W1+W2+W3+W4
であれば、
ΔW=WT-(W1+W2+W3+W4)
と与えられる、余剰の充電電力量ΔW分を、目標修正期間Δt内に割り振る。割り振る1つの方法として、ΔWを目標修正期間Δtで割って得られるΔP分を、Δt間の目標値に減算して新しい目標とすることが良いと思われるが、時間に重みを付けて分配しても良い。これにより、(式1)を満たす修正ができる。
Claims (10)
- 電力を配電する配電装置と、該配電装置から配電される電力を用いて自動車に搭載された蓄電池を充電するために該蓄電池と接続される複数のインタフェース装置と、前記インタフェース装置における充電を制御する充電制御装置とから構成された充電制御システムにおいて、
前記充電制御装置は、前記複数のインタフェース装置それぞれにおける、該インタフェース装置と前記蓄電池とが接続される時刻である配電系統接続時刻と切断される時刻である配電系統切断時刻とに基づいて、前記インタフェース装置による前記蓄電池への充電を制御することを特徴とする充電制御システム。 - 請求項1に記載の充電制御システムにおいて、
前記充電制御装置は、あらかじめ設定された目標需要量を超えないように、前記複数のインタフェース装置の優先順位に従って前記充電を制御することを特徴とする充電制御システム。 - 請求項2に記載の充電制御システムにおいて、
前記充電制御装置は、現在の時刻から前記配電系統切断時刻までの時間が短い蓄電池と接続されているインタフェース装置による充電を優先することを特徴とする充電制御システム。 - 請求項2に記載の充電制御システムにおいて、
前記充電制御装置は、蓄電量が少ない蓄電池と接続されているインタフェース装置による充電を優先することを特徴とする充電制御システム。 - 請求項2に記載の充電制御システムにおいて、
前記充電制御装置は、所定の時間後に充電を行っていると推定される前記インタフェース装置の数に基づいて、前記目標需要量を修正することを特徴とする充電制御システム。 - 請求項2に記載の充電制御システムにおいて、
前記充電制御装置は、現在充電を行っている前記インタフェース装置にて充電する必要がある充電電力量と、所定の時間経過後に充電を行っていると推定される前記インタフェース装置にて充電する必要がある充電電力量とを加算した充電電力量に基づいて、前記充電電力量の過不足量を計算し、該計算された過不足量に基づいて、前記目標需要量を修正することを特徴とする充電制御システム。 - 請求項1または請求項2に記載の充電制御システムにおいて、
前記充電制御装置は、前記自動車にあらかじめ設定された前記配電系統接続時刻と前記配電系統切断時刻とを、前記インタフェース装置と前記蓄電池とが接続された際に該自動車から前記インタフェース装置を介して取得し、該取得した前記配電系統接続時刻と前記配電系統切断時刻とに基づいて、前記充電を制御することを特徴とする充電制御システム。 - 請求項1または請求項2に記載の充電制御システムにおいて、
前記充電制御装置は、過去の統計に基づいて算出された前記配電系統接続時刻と前記配電系統切断時刻とに基づいて、前記充電を制御することを特徴とする充電制御システム。 - 配電される電力を用いて自動車に搭載された蓄電池を充電するために該蓄電池と接続される複数のインタフェース装置における充電を制御する充電制御装置であって、
前記複数のインタフェース装置それぞれにおける、該インタフェース装置と前記蓄電池とが接続される時刻である配電系統接続時刻と切断される時刻である配電系統切断時刻とに基づいて、前記インタフェース装置による前記蓄電池への充電を制御する制御部を有する充電制御装置。 - 配電される電力を用いて自動車に搭載された蓄電池を充電するために該蓄電池と接続される複数のインタフェース装置における充電を制御する充電制御方法であって、
前記複数のインタフェース装置を用いて、前記蓄電池を充電する処理と、
前記複数のインタフェース装置それぞれにおける、該インタフェース装置と前記蓄電池とが接続される時刻である配電系統接続時刻と切断される時刻である配電系統切断時刻とに基づいて、前記インタフェース装置による前記蓄電池への充電を制御する処理とを行う充電制御方法。
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JP2019207555A (ja) * | 2018-05-29 | 2019-12-05 | 京セラ株式会社 | 基地装置、基地装置の制御方法、及び基地装置の制御プログラム |
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Also Published As
Publication number | Publication date |
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JPWO2012120736A1 (ja) | 2014-07-07 |
US20130134934A1 (en) | 2013-05-30 |
JP5987241B2 (ja) | 2016-09-07 |
US8963493B2 (en) | 2015-02-24 |
EP2634890A1 (en) | 2013-09-04 |
EP2634890A4 (en) | 2014-10-22 |
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