CN112440806A - Power control method and device for charging pile, computer equipment and storage medium - Google Patents
Power control method and device for charging pile, computer equipment and storage medium Download PDFInfo
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- CN112440806A CN112440806A CN202011317814.XA CN202011317814A CN112440806A CN 112440806 A CN112440806 A CN 112440806A CN 202011317814 A CN202011317814 A CN 202011317814A CN 112440806 A CN112440806 A CN 112440806A
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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
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
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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
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
- Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
Abstract
The application relates to a power control method and device of a charging pile, computer equipment and a storage medium. The method comprises the following steps: acquiring the current operating power of a charging station and the current operating power of charging piles in a scheduling set; if the current operation power of the charging station is greater than the preset maximum charging power, determining the overpower of the charging station according to the difference value between the current operation power of the charging station and the preset maximum charging power; acquiring the residual charging capacity of the electric vehicles connected with each charging pile, and determining the residual charging capacity of each electric vehicle; determining power regulating quantity of each corresponding charging pile according to the product of the residual charging capacity of each electric vehicle and the overpower of the charging station; determining the target operating power of each charging pile according to the difference value between the current operating power of each charging pile and the power regulating quantity; and performing power control on the corresponding charging pile according to the target operating power. By adopting the method, the condition that the operation power of the grid-connected point of the charging station exceeds the limit value is avoided.
Description
Technical Field
The present disclosure relates to the field of system power control technologies, and in particular, to a power control method and apparatus for a charging pile, a computer device, and a storage medium.
Background
Under the background that environmental protection and energy supply are increasingly tense, the electric automobile industry in the field of new energy is rapidly developed. With the large-scale increase of the usage of electric vehicles, China needs to build or expand a large number of electric vehicle charging stations to meet the charging requirements of the electric vehicles, and the construction speed of the charging stations is far higher than that of a power grid system. Under the condition that the existing power capacity is limited, the charging safety of the electric automobile becomes an important consideration factor for constructing an electric automobile charging station.
At present, China mainly sets a plurality of charging piles in each large charging station so as to facilitate the simultaneous charging of a plurality of electric vehicles. However, because the capacitance of the charging station is limited, the phenomenon that the operation power of the grid-connected point output by the charging station exceeds the limit value due to the fact that all charging piles in the charging station output full power at the same time often occurs, the phenomenon that the transformer in the charging station runs in an overload mode easily occurs, the phenomenon of overheating and voltage fluctuation occurs, the stable operation of the charging station is affected, and even serious charging faults and other serious safety problems may be caused.
Disclosure of Invention
In view of the above, it is necessary to provide a power control method and apparatus for a charging pile, a computer device, and a storage medium, which can prevent the grid-connected point operating power output by a charging station from exceeding a limit value.
In a first aspect, a power control method for a charging pile is provided, where the method includes:
acquiring the current operating power of a charging station and the current operating power of charging piles in a scheduling set; the dispatching set refers to a set of charging piles subjected to power control in the charging station; if the current operation power of the charging station is greater than the preset maximum charging power, determining the overpower of the charging station according to the difference value between the current operation power of the charging station and the preset maximum charging power; acquiring the residual charging capacity of the electric vehicles connected with each charging pile, and determining the residual charging capacity of each electric vehicle; the remaining charging capacity ratio is a ratio of the remaining charging capacity of the electric vehicle connected with the charging pile to the sum of the remaining charging capacities of all the electric vehicles connected with the charging piles in the dispatching set; determining power regulating quantity of each corresponding charging pile according to the product of the residual charging capacity of each electric vehicle and the overpower of the charging station; determining the target operating power of each charging pile according to the difference value between the current operating power of each charging pile and the power regulating quantity; and performing power control on the corresponding charging pile according to the target operating power.
In one embodiment, the step of performing power control on the corresponding charging pile according to the target operating power includes: judging whether the difference value between the current operating power of the charging pile and the corresponding target operating power is within a preset range or not; if the difference value is within the preset range, maintaining the current operating power of the charging pile unchanged; and if the difference value is not within the preset range, adjusting the operating power of the charging pile according to the target operating power.
In one embodiment, the charging piles in the scheduling set are determined according to the following steps: acquiring the residual electric quantity of the electric automobile connected with the charging pile in the charging station; taking the charging piles meeting the first preset condition in the charging stations as the charging piles in the dispatching set; the first preset condition is that the residual capacity of the electric vehicle connected with the charging pile in the charging station is larger than a preset residual capacity threshold value.
In one embodiment, the charging piles in the scheduling set are determined according to the following steps: acquiring a charging mode selection signal received by a charging pile in a charging station; the charging mode selection signal comprises an economical charging mode selection signal and an immediate charging mode selection signal; taking the charging piles meeting the second preset condition in the charging stations as the charging piles in the dispatching set; the second preset condition is that the charging mode selection signal received by the charging pile in the charging station is an economic charging mode selection signal.
In one embodiment, the step of obtaining the remaining charging capacity of the electric vehicle connected to each charging pile includes: and acquiring the residual electric quantity and the storage battery capacity of the electric vehicle connected with each charging pile, and calculating according to the residual electric quantity and the storage battery capacity to obtain the residual charging electric quantity of the electric vehicle connected with each charging pile.
In a second aspect, a power control device for a charging pile is provided, the device comprising: the device comprises a power acquisition module, an over-power calculation module, a ratio calculation module, a power regulation calculation module, a target operation power calculation module and a power control module.
The power acquisition module is used for acquiring the current operating power of the charging station and the current operating power of the charging piles in the dispatching set; the scheduling set refers to a set of charging piles in the charging station that are subjected to power control. The overpower calculation module is used for determining overpower of the charging station according to a difference value between the current operation power of the charging station and the preset maximum charging power if the current operation power of the charging station is larger than the preset maximum charging power. The duty ratio calculation module is used for acquiring the residual charging capacity of the electric vehicles connected with the charging piles and determining the residual charging capacity ratio of each electric vehicle; the remaining charging capacity ratio is a ratio of the remaining charging capacity of the electric vehicle connected to the charging pile to the sum of the remaining charging capacities of all the electric vehicles connected to the charging pile in the scheduling set. And the power regulating quantity calculating module is used for determining the power regulating quantity of each corresponding charging pile according to the product of the residual charging capacity of each electric vehicle and the overpower of the charging station. And the target operating power calculation module is used for determining the target operating power of each charging pile according to the difference value between the current operating power of each charging pile and the power regulating quantity. And the power control module is used for carrying out power control on the corresponding charging pile according to the target operating power.
In one embodiment, the power control module comprises a power judging unit and a power control unit; the power judgment unit is used for judging whether the difference value between the current operating power of the charging pile and the corresponding target operating power is within a preset range or not; the power control unit is used for maintaining the current operating power of the charging pile unchanged if the difference value is within a preset range; the power control unit is further used for adjusting the operating power of the charging pile according to the target operating power if the difference value is not within the preset range.
In one embodiment, the proportion calculation module comprises a residual charging capacity acquisition submodule for acquiring residual charging capacities of electric vehicles connected with the charging piles; the remaining charge capacity acquisition submodule includes: the numerical value acquisition unit is used for acquiring the residual electric quantity and the capacity of the storage battery of the electric automobile connected with each charging pile; and the residual charging electric quantity calculating unit is used for calculating according to the residual electric quantity and the capacity of the storage battery to obtain the residual charging electric quantity of the electric vehicle connected with each charging pile.
In a third aspect, a computer device is provided, comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:
acquiring the current operating power of a charging station and the current operating power of charging piles in a scheduling set; the dispatching set refers to a set of charging piles subjected to power control in the charging station; if the current operation power of the charging station is greater than the preset maximum charging power, determining the overpower of the charging station according to the difference value between the current operation power of the charging station and the preset maximum charging power; acquiring the residual charging capacity of the electric vehicles connected with each charging pile, and determining the residual charging capacity of each electric vehicle; the remaining charging capacity ratio is a ratio of the remaining charging capacity of the electric vehicle connected with the charging pile to the sum of the remaining charging capacities of all the electric vehicles connected with the charging piles in the dispatching set; determining power regulating quantity of each corresponding charging pile according to the product of the residual charging capacity of each electric vehicle and the overpower of the charging station; determining the target operating power of each charging pile according to the difference value between the current operating power of each charging pile and the power regulating quantity; and performing power control on the corresponding charging pile according to the target operating power.
In a fourth aspect, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of:
acquiring the current operating power of a charging station and the current operating power of charging piles in a scheduling set; the dispatching set refers to a set of charging piles subjected to power control in the charging station; if the current operation power of the charging station is greater than the preset maximum charging power, determining the overpower of the charging station according to the difference value between the current operation power of the charging station and the preset maximum charging power; acquiring the residual charging capacity of the electric vehicles connected with each charging pile, and determining the residual charging capacity of each electric vehicle; the remaining charging capacity ratio is a ratio of the remaining charging capacity of the electric vehicle connected with the charging pile to the sum of the remaining charging capacities of all the electric vehicles connected with the charging piles in the dispatching set; determining power regulating quantity of each corresponding charging pile according to the product of the residual charging capacity of each electric vehicle and the overpower of the charging station; determining the target operating power of each charging pile according to the difference value between the current operating power of each charging pile and the power regulating quantity; and performing power control on the corresponding charging pile according to the target operating power.
The power control method, the device, the computer equipment and the storage medium of the charging pile compare the obtained current operating power of the charging station with the preset maximum charging power of the charging station, if the current operating power of the charging station is larger than the preset maximum charging power of the charging station, the phenomenon that the current operating power of the charging station exceeds the limit value occurs, then the overpower of the charging station is determined according to the difference value between the current operating power of the charging station and the preset maximum charging power, then the residual charging capacity of each electric vehicle is determined by obtaining the residual charging capacity of each electric vehicle connected with the charging pile, the power regulating quantity of each corresponding charging pile is determined according to the product of the residual charging capacity of each electric vehicle and the overpower of the charging station, and the difference value is obtained by obtaining the current operating power of the charging pile in the scheduling set and the power regulating quantity, therefore, the target operation power of each charging pile is determined, and the power control of the corresponding charging pile can be realized according to the target operation power. Based on this, carry out power control to corresponding charging pile in the scheduling set respectively through above-mentioned target operating power to avoided the phenomenon that the power of grid-connected point operating power of whole charging station surpassed the limiting value, just also can not lead to the transformer overload operation in the charging station, improved the stability when charging station moves, reduced the fault rate when charging station moves.
Drawings
FIG. 1 is a diagram of an exemplary implementation of a method for controlling power of a charging pile;
FIG. 2 is a schematic flow chart of a method for controlling power of a charging pile according to an embodiment;
FIG. 3 is a flow diagram illustrating the determination of charging piles in a dispatch set, according to one embodiment;
FIG. 4 is a schematic flow chart illustrating the process of determining charging piles in a scheduling set according to another embodiment;
fig. 5 is a schematic flowchart illustrating a process of acquiring remaining charging capacity of an electric vehicle connected to each charging pile in a scheduling set according to an embodiment;
fig. 6 is a schematic flowchart illustrating power control performed on corresponding charging piles according to target operating power of each charging pile in the scheduling set in one embodiment;
FIG. 7 is a block diagram of a power control device of the charging post in one embodiment;
FIG. 8 is a block diagram of the structure of a power control module in one embodiment;
fig. 9 is a block diagram showing a structure of a remaining charge capacity acquisition submodule in one embodiment;
FIG. 10 is a diagram showing an internal structure of a computer device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
In the actual life, with the enhancement of environmental awareness and energy saving awareness of people, the electric vehicle industry in the new energy field is rapidly developed, the usage amount of electric vehicles is increasing on a large scale, and however, the charging station is used as a necessary infrastructure for the development of electric vehicles, which leads to the gradual increase of the demand for the charging station in the market. However, since the power grid construction speed is much lower than the charging station construction speed, under the condition that the existing power capacity is limited, the charging safety of the electric vehicle becomes an important consideration factor for constructing the charging station of the electric vehicle.
At present, China mainly sets a plurality of charging piles in each large charging station so as to facilitate the simultaneous charging of a plurality of electric vehicles. However, because the capacitance of the charging station is limited, the phenomenon that the operation power of the grid-connected point output by the charging station exceeds the limit value due to the fact that all charging piles in the charging station output full power at the same time often occurs, the phenomenon that the transformer in the charging station runs in an overload mode easily occurs, the phenomenon of overheating and voltage fluctuation occurs, the stable operation of the charging station is affected, and even serious charging faults and other serious safety problems may be caused.
Therefore, the embodiment of the application provides a power control method and device for a charging pile, a computer device and a storage medium, and the method and device can avoid the phenomenon that the operation power of a grid-connected point of a charging station exceeds a limit value, and also can not cause overload operation of a transformer in the charging station, so that the stability of the charging station in operation is improved, and the failure rate of the charging station in operation is reduced.
Next, an application environment of the power control method for a charging pile provided in the embodiment of the present application will be briefly described.
As shown in fig. 1, the application environment is a microgrid system which may include a grid-connected point electric meter 101, a plurality of unit electric meters 102, a plurality of charging piles 103, a plurality of controllers 104, and a power control device 105; one end of the grid-connected point electric meter 101 is connected with a public power grid, and the other end of the grid-connected point electric meter is respectively connected with each unit electric meter 102; one controller 104 corresponds to one charging pile 103, the controller 104 is connected with the corresponding charging pile 103, and the controller 104 can control the operation state of the corresponding charging pile 103 and obtain the relevant operation parameters of the electric vehicle connected with the corresponding charging pile 103; each controller 104 is connected with a corresponding unit electric meter 102, and each controller 104 can acquire relevant parameters of the charging pile in the operation process, such as the current operation power of the charging pile monitored in the unit electric meter 102; one end of the power control device 105 is connected with the grid-connected point ammeter 101, and the other end is respectively connected with each controller 104; the power control device 105 may be configured to obtain related operating parameters, such as the current operating power of the charging station monitored by the grid-connected point electric meter 101, and the related operating parameters obtained by each controller 104, and may be further configured to control the operating state of the charging pile 103 corresponding to each controller 104 by controlling each controller 104.
In one embodiment, as shown in fig. 2, a method for controlling power of a charging pile is provided, which is described by taking the method as an example of being applied to a micro-grid system in fig. 1, and includes the following steps:
step 202, acquiring the current operating power of a charging station and the current operating power of charging piles in a dispatching set; the dispatching set refers to a set of charging piles in the charging station, which are subjected to power control.
Among them, the charging station is a platform that can collectively provide quick charging for a plurality of electric vehicles. The charging station is concentrated to provide quick charge for many electric vehicles through setting up a plurality of electric pile that fill in areas such as public parking area, shopping mall, highway service area and office building. In one embodiment, the current operating power of the charging station includes the current operating power of each charging pole in the charging station and the station load of the charging station. In addition, the charging pile serving as the station can belong to the scheduling set if the charging pile receives power control, and otherwise, the charging pile cannot belong to the scheduling set. Thus, a dispatch set refers to a set of charging piles in a charging station that are subject to power control.
In one embodiment, as shown in fig. 3, a technical process for determining charging piles in a scheduling set is shown, which may include the following steps:
step 302, acquiring a charging mode selection signal received by a charging pile in a charging station; the charging mode selection signal comprises an economical charging mode selection signal and an immediate charging mode selection signal;
the charging mode selection signal is a signal for selecting a charging mode of the charging pile according to a demand of a user of the charging pile. The charging mode selection signal comprises an economical charging mode selection signal and an immediate charging mode selection signal. The economical charging mode selection signal is a selection signal that a user of the charging pile needs to use a charging mode that is cheap but slow in charging speed. The immediate charging mode selection signal is a selection signal that a user of the charging post needs to use a charging mode that is fast in charging speed but expensive.
Step 304, taking the charging piles meeting the second preset condition in the charging stations as the charging piles in the dispatching set; the second preset condition is that the charging mode selection signal received by the charging pile in the charging station is an economic charging mode selection signal.
And judging whether the acquired charging mode selection signal received by the charging pile in the charging station meets a second preset condition, if so, determining that the charging pile belongs to the dispatching set.
In the embodiment, the charging mode selection signals received by the charging piles in the charging stations are screened, so that a set, namely a scheduling set, of the charging piles receiving power control in the charging stations is determined, the convenience of the charging piles in the power control process is improved, and the operating cost of the charging piles for performing power control is reduced.
In one embodiment, as shown in fig. 4, a technical process for determining charging piles in a dispatch set is shown, which may include the following steps:
step 402, acquiring the residual electric quantity of the electric automobile connected with the charging pile in the charging station;
the remaining capacity is a capacity remaining from a current state to a full-capacity state of the electric vehicle. In one embodiment, the remaining charge may be a state of charge.
Step 404, taking the charging piles meeting the first preset condition in the charging stations as the charging piles in the dispatching set; the first preset condition is that the residual capacity of the electric vehicle connected with the charging pile in the charging station is larger than a preset residual capacity threshold value.
The preset residual capacity threshold value is mainly determined according to the lowest endurance mileage which can be supported by the residual capacity in the electric vehicle connected with the charging pile. In one embodiment, the preset remaining power threshold value can be uniformly set according to the lowest driving range which can be supported by the remaining power in the electric vehicle connected with the charging pile, and can be set individually according to different types of the electric vehicle connected with the charging pile and the lowest driving range which can be supported by the remaining power of the electric vehicle.
In this embodiment, by determining whether the acquired remaining power of the electric vehicle connected to the charging pile in the charging station meets a first preset condition, if the acquired remaining power of the electric vehicle connected to the charging pile in the charging station is greater than a preset remaining power threshold, it is determined that the charging pile belongs to a set, i.e., a scheduling set, of charging piles receiving power control in the charging station. Based on this, this embodiment has improved the convenience that fills electric pile and has carried out power control in-process, has reduced the operating cost that fills electric pile and carry out power control.
Step 204, if the current operating power of the charging station is greater than the preset maximum charging power, determining the overpower of the charging station according to the difference between the current operating power of the charging station and the preset maximum charging power.
And comparing the acquired current operating power of the charging station with the preset maximum charging power of the charging station, and if the current operating power of the charging station is greater than the preset maximum charging power of the charging station, indicating that the current power of a grid-connected point of the charging station, namely the current operating power of the charging station, exceeds a limit value, and performing power control on each charging pile in the charging station. And then, determining the overpower of the charging station according to the difference value between the current operation power of the charging station and the preset maximum charging power of the charging station.
In one embodiment, the overpower of the charging station is determined according to the following expression: delta Prun＝Prun-Pset_max(ii) a Wherein, Δ PrunOverpower for charging stations; prunIs the current operating power of the charging station; pset_maxThe preset maximum charging power of the charging station is obtained.
Step 206, acquiring the residual charging capacity of the electric vehicles connected with each charging pile in the dispatching set, and determining the residual charging capacity of each electric vehicle; the remaining charge capacity ratio is a ratio of the remaining charge capacity of the electric vehicle connected to the charging pile to the sum of the remaining charge capacities of all the electric vehicles connected to the charging pile.
The remaining charging capacity is an electric capacity to be supplemented to the storage battery of the electric vehicle from the current state to the full state. In one embodiment, as shown in fig. 5, the step of acquiring the remaining charging capacity of the electric vehicle connected to each charging pile in the scheduling set includes:
step 502, obtaining the remaining electric quantity and the storage battery capacity of the electric vehicle connected with each charging pile in the dispatching set.
The storage battery capacity refers to the amount of electricity discharged or the length of discharge time of the storage battery under specified conditions (including discharge intensity, discharge current and discharge end voltage), and is expressed in units of A.h or A.min. The accumulator of the electric vehicle is a reversible direct current power supply, can convert other energy into electric energy and also can convert the electric energy into other energy, and is connected with a generator of the electric vehicle in parallel.
And step 504, calculating according to the residual electric quantity of the electric vehicle connected with each charging pile in the dispatching set and the capacity of the storage battery to obtain the residual charging electric quantity of the electric vehicle connected with each charging pile in the dispatching set.
The constant a represents the full-power state capacity of the electric vehicle connected with the charging piles in the dispatching set; and calculating a difference value between the constant a and the residual electric quantity of the electric vehicle connected with the charging pile, and multiplying the difference value by the capacity of the storage battery to obtain the current residual charging electric quantity of the electric vehicle connected with the charging pile in the dispatching set. In one embodiment, the current remaining charging capacity of the electric vehicle connected to the charging pile in the scheduling set is obtained according to the following expression:
wherein the content of the first and second substances,
the current residual charging capacity of the electric vehicle connected with the charging pile in the dispatching set is obtained;
the capacity of a storage battery of the electric vehicle connected with the charging pile in the dispatching set;
the residual capacity of the electric vehicle connected with the charging pile in the dispatching set is obtained.
In the embodiment, the residual charge capacity of the electric vehicle connected with each charging pile in the scheduling set can be directly obtained by obtaining and calculating the residual charge capacity and the storage battery capacity of the electric vehicle connected with each charging pile in the scheduling set, so that the residual charge capacity obtaining step is simplified, and the power control efficiency of the charging piles is improved.
Further, the remaining charge capacity ratio is specifically obtained according to the following expression:
wherein E isratioThe ratio of the residual charging capacity is calculated;
battery capacity for electric vehicles connected to charging piles in dispatch collections；
The sum of the residual charging capacities of all the electric vehicles connected with the charging piles in the dispatching set.
And step 208, determining the power regulating quantity of each corresponding charging pile according to the product of the residual charging capacity of the electric vehicle connected with each charging pile in the scheduling set and the overpower of the charging station.
The power regulating quantity of each charging pile in the scheduling set is obtained according to the following expression:
ΔP1_set_ev＝Eratio×ΔPrun
wherein, Δ P1_set_evAdjusting the power of the charging piles in the dispatching set; delta PrunOverpower for charging stations; delta PrunOverpower for charging stations;
and step 210, determining the target operating power of each charging pile in the scheduling set according to the difference value between the current operating power of each charging pile in the scheduling set and the power regulating quantity.
And the target power of the charging piles in the scheduling set refers to the operating power required by the charging piles in the scheduling set. In one embodiment, if the current operating power of the charging piles in the scheduling set is periodically adjusted, the target power of the charging piles in the scheduling set refers to the operating power required to be reached by the operating power of the charging piles in the scheduling set in the next preset operating cycle. The preset operation period refers to an adjustment period of the current operation power of the charging pile in the scheduling set, and can be 1 second, 5 seconds, 10 seconds and the like. Can select above-mentioned preset operation cycle by oneself in this embodiment, improved the power control convenience of filling electric pile.
In one embodiment, the target power of the charging piles in the scheduling set is obtained according to the following expression:
P1_set_ev＝P1_run-ΔP1_set_ev
wherein, P1_set_evTarget power of the charging piles in the dispatching set; p1_runThe current operating power of the charging piles in the dispatching set is obtained; delta P1_set_evAnd adjusting the power of the charging piles in the dispatching set.
And 212, performing power control on the corresponding charging piles according to the target operating power of each charging pile in the scheduling set.
After the target power of each charging pile in the scheduling set is obtained, power control can be performed on the corresponding charging pile according to the target power of the charging pile in the scheduling set, and therefore the operating power of the charging pile does not exceed the preset maximum charging power of the charging station.
In one embodiment, as shown in fig. 6, the step of performing power control on the corresponding charging pile according to the target operating power of each charging pile in the scheduling set includes:
step 602, judging whether the difference value between the current operating power of the charging pile in the scheduling set and the corresponding target operating power is within a preset range.
And the preset range is determined according to the obtained proportional coefficient of the target operating power of the charging pile in the scheduling set and the preset range. In one embodiment, the predetermined range is obtained according to the following expression:
ΔP1_set_ev＝[P1_set_ev×(1-a％)，P1_set_ev×(1+a％)]
wherein, Δ P1_set_evIs a preset range; p1_set_evTarget power of the charging piles in the dispatching set; and a% is a proportionality coefficient of a preset range.
Step 604, if the difference value is within a preset range, maintaining the current operating power of the charging piles in the scheduling set unchanged; and if the difference value is not within the preset range, adjusting the operating power of the charging pile according to the target operating power.
And according to the result of judging whether the difference value between the current operating power of the charging pile in the scheduling set and the corresponding target operating power is within the preset range, if so, maintaining the current operating power of the charging pile in the scheduling set unchanged. And if the difference value is not within the preset range, adjusting the operating power of the charging pile according to the target power of the charging pile in the scheduling set. In this embodiment, control over the corresponding charging pile is completed according to the result of judging whether the difference value between the current operating power of the charging pile and the corresponding target operating power in the scheduling set is within the preset range, so that convenience and operability of power control over the charging pile are improved.
The power control method of the charging pile compares the current operating power of the charging station obtained by the obtaining with the preset maximum charging power of the charging station, if the current operating power of the charging station is larger than the preset maximum charging power of the charging station, the phenomenon that the current operating power of the charging station exceeds the limit value occurs, then the overpower of the charging station is determined according to the difference value of the current operating power of the charging station and the preset maximum charging power, then the residual charging capacity of each electric vehicle is determined by obtaining the residual charging capacity of each charging pile to determine the residual charging capacity proportion of each electric vehicle, the power regulating quantity of each corresponding charging pile is determined according to the product of the residual charging capacity proportion of each electric vehicle and the overpower of the charging station, and the difference value is obtained by obtaining the current operating power of the charging piles in the scheduling set and the power regulating quantity, therefore, the target operation power of each charging pile is determined, and the power control of the corresponding charging pile can be realized according to the target operation power. Based on this, carry out power control to corresponding charging pile in the scheduling set respectively through above-mentioned target operating power to avoided the phenomenon that the power of grid-connected point operating power of whole charging station surpassed the limiting value, just also can not lead to the transformer overload operation in the charging station, improved the stability when charging station moves, reduced the fault rate when charging station moves.
It should be understood that although the various steps in the flow charts of fig. 2-6 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2-6 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps.
In one embodiment, as shown in fig. 7, a power control apparatus for a charging pile is provided, and the apparatus includes a power obtaining module 701, an over-power calculating module 702, a proportion calculating module 703, a power adjustment amount calculating module 704, a target operating power calculating module 705, and a power control module 706.
The power obtaining module 701 is configured to obtain current operating power of the charging station and current operating power of charging piles in the scheduling set; the scheduling set refers to a set of charging piles in the charging station that are subjected to power control. The overpower calculation module 702 is configured to determine overpower of the charging station according to a difference between the current operating power of the charging station and a preset maximum charging power if the current operating power of the charging station is greater than the preset maximum charging power. The proportion calculation module 703 is configured to obtain the remaining charging capacity of the electric vehicle connected to each charging pile, and determine the proportion of the remaining charging capacity of each electric vehicle; the remaining charge capacity ratio is a ratio of the remaining charge capacity of the electric vehicle connected to the charging pile to the sum of the remaining charge capacities of all the electric vehicles connected to the charging pile. The power adjustment amount calculation module 704 is configured to determine the power adjustment amount of each corresponding charging pile according to a product of the remaining charging capacity fraction of each electric vehicle and the overpower of the charging station. The target operating power calculation module 705 is configured to determine a target operating power of each charging pile according to a difference between the current operating power of each charging pile and the power adjustment amount. The power control module 706 is configured to perform power control on the corresponding charging pile according to the target operating power.
The power control device of the charging pile provided by the embodiment of the application can realize the method embodiment, the realization principle and the technical effect are similar, and the details are not repeated.
In one embodiment, as shown in fig. 8, the power control module 706 includes a power determining unit 801 and a power control unit 802. The power determining unit 801 is configured to determine whether a difference between the current operating power of the charging pile and the corresponding target operating power is within a preset range. The power control unit 802 is configured to maintain the current operating power of the charging pile unchanged if the difference value is within a preset range; the power control unit 802 is further configured to adjust the operating power of the charging pile according to the target operating power if the difference is not within the preset range.
The power control device of the charging pile provided by the embodiment of the application can realize the method embodiment, the realization principle and the technical effect are similar, and the details are not repeated.
In one embodiment, as shown in fig. 9, the ratio calculation module 703 includes a remaining charging capacity acquisition sub-module 999, and is configured to acquire the remaining charging capacity of the electric vehicle connected to each charging pile. The remaining charge capacity obtaining sub-module 999 includes: a value acquisition unit 901 and a remaining charge capacity calculation unit 902. The value obtaining unit 901 is configured to obtain the remaining power and the battery capacity of the electric vehicle connected to each charging pile. The remaining charging capacity calculation unit 902 is configured to calculate according to the remaining capacity and the battery capacity, and obtain the remaining charging capacity of the electric vehicle connected to each charging pile.
The power control device of the charging pile provided by the embodiment of the application can realize the method embodiment, the realization principle and the technical effect are similar, and the details are not repeated.
For specific limitations of the power control device of the charging pile, reference may be made to the above limitations of the power control method of the charging pile, and details are not repeated here. All or part of each module in the power control device of the charging pile can be realized through software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 10. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a method of power control for a charging pole. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the architecture shown in fig. 10 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
acquiring the current operating power of a charging station and the current operating power of charging piles in a scheduling set; the dispatching set refers to a set of charging piles subjected to power control in the charging station; if the current operation power of the charging station is greater than the preset maximum charging power, determining the overpower of the charging station according to the difference value between the current operation power of the charging station and the preset maximum charging power; acquiring the residual charging capacity of the electric vehicles connected with each charging pile, and determining the residual charging capacity of each electric vehicle; the remaining charging capacity ratio is a ratio of the remaining charging capacity of the electric vehicle connected with the charging pile to the sum of the remaining charging capacities of the electric vehicles connected with all the charging piles; determining power regulating quantity of each corresponding charging pile according to the product of the residual charging capacity of each electric vehicle and the overpower of the charging station; determining the target operating power of each charging pile according to the difference value between the current operating power of each charging pile and the power regulating quantity; and performing power control on the corresponding charging pile according to the target operating power.
The implementation principle and technical effect of the computer device provided in this embodiment are similar to those of the method embodiments described above, and are not described herein again.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor when executing the computer program further implementing the steps of: judging whether the difference value between the current operating power of the charging pile and the corresponding target operating power is within a preset range or not; if the difference value is within the preset range, maintaining the current operating power of the charging pile unchanged; and if the difference value is not within the preset range, adjusting the operating power of the charging pile according to the target operating power.
The implementation principle and technical effect of the computer device provided in this embodiment are similar to those of the method embodiments described above, and are not described herein again.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor when executing the computer program further implementing the steps of: acquiring the residual electric quantity of each electric automobile connected with the charging pile in the charging station; taking the charging piles meeting the first preset condition in the charging stations as the charging piles in the dispatching set; the first preset condition is that the residual capacity of the electric vehicle connected with the charging pile in the charging station is larger than a preset residual capacity threshold value.
The implementation principle and technical effect of the computer device provided in this embodiment are similar to those of the method embodiments described above, and are not described herein again.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor when executing the computer program further implementing the steps of: acquiring charging mode selection signals received by each charging pile in a charging station; the charging mode selection signal comprises an economical charging mode selection signal and an immediate charging mode selection signal; taking the charging piles meeting the second preset condition in the charging stations as the charging piles in the dispatching set; the second preset condition is that the charging mode selection signal received by the charging pile in the charging station is an economic charging mode selection signal.
The implementation principle and technical effect of the computer device provided in this embodiment are similar to those of the method embodiments described above, and are not described herein again.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor when executing the computer program further implementing the steps of: and acquiring the residual electric quantity and the storage battery capacity of the electric vehicle connected with each charging pile, and calculating according to the residual electric quantity and the storage battery capacity to obtain the residual charging electric quantity of the electric vehicle connected with each charging pile.
The implementation principle and technical effect of the computer device provided in this embodiment are similar to those of the method embodiments described above, and are not described herein again.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
acquiring the current operating power of a charging station and the current operating power of charging piles in a scheduling set; the dispatching set refers to a set of charging piles subjected to power control in the charging station; if the current operation power of the charging station is greater than the preset maximum charging power, determining the overpower of the charging station according to the difference value between the current operation power of the charging station and the preset maximum charging power; acquiring the residual charging capacity of the electric vehicles connected with each charging pile, and determining the residual charging capacity of each electric vehicle; the remaining charging capacity ratio is a ratio of the remaining charging capacity of the electric vehicle connected with the charging pile to the sum of the remaining charging capacities of the electric vehicles connected with all the charging piles; determining power regulating quantity of each corresponding charging pile according to the product of the residual charging capacity of each electric vehicle and the overpower of the charging station; determining the target operating power of each charging pile according to the difference value between the current operating power of each charging pile and the power regulating quantity; and performing power control on the corresponding charging pile according to the target operating power.
The implementation principle and technical effect of the computer-readable storage medium provided by this embodiment are similar to those of the above-described method embodiment, and are not described herein again.
In one embodiment, the computer program when executed by the processor further performs the steps of: judging whether the difference value between the current operating power of the charging pile and the corresponding target operating power is within a preset range or not; if the difference value is within the preset range, maintaining the current operating power of the charging pile unchanged; and if the difference value is not within the preset range, adjusting the operating power of the charging pile according to the target operating power.
The implementation principle and technical effect of the computer-readable storage medium provided by this embodiment are similar to those of the above-described method embodiment, and are not described herein again.
In one embodiment, the computer program when executed by the processor further performs the steps of: acquiring the residual electric quantity of each electric automobile connected with the charging pile in the charging station; taking the charging piles meeting the first preset condition in the charging stations as the charging piles in the dispatching set; the first preset condition is that the residual capacity of the electric vehicle connected with the charging pile in the charging station is larger than a preset residual capacity threshold value.
The implementation principle and technical effect of the computer-readable storage medium provided by this embodiment are similar to those of the above-described method embodiment, and are not described herein again.
In one embodiment, the computer program when executed by the processor further performs the steps of: acquiring charging mode selection signals received by each charging pile in a charging station; the charging mode selection signal comprises an economical charging mode selection signal and an immediate charging mode selection signal; taking the charging piles meeting the second preset condition in the charging stations as the charging piles in the dispatching set; the second preset condition is that the charging mode selection signal received by the charging pile in the charging station is an economic charging mode selection signal.
The implementation principle and technical effect of the computer-readable storage medium provided by this embodiment are similar to those of the above-described method embodiment, and are not described herein again.
In one embodiment, the computer program when executed by the processor further performs the steps of: and acquiring the residual electric quantity and the storage battery capacity of the electric vehicle connected with each charging pile, and calculating according to the residual electric quantity and the storage battery capacity to obtain the residual charging electric quantity of the electric vehicle connected with each charging pile.
The implementation principle and technical effect of the computer-readable storage medium provided by this embodiment are similar to those of the above-described method embodiment, and are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), for example.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for controlling power of a charging pile, the method comprising:
acquiring the current operating power of a charging station and the current operating power of charging piles in a scheduling set; the dispatching set refers to a set of charging piles subjected to power control in the charging stations;
if the current operating power of the charging station is greater than the preset maximum charging power, determining the overpower of the charging station according to the difference value between the current operating power of the charging station and the preset maximum charging power;
acquiring the residual charging capacity of the electric vehicles connected with the charging piles, and determining the residual charging capacity of each electric vehicle to be in proportion; the remaining charging capacity ratio is a ratio of the remaining charging capacity of the electric vehicle connected with the charging pile to the sum of the remaining charging capacities of all the electric vehicles connected with the charging pile in the scheduling set;
determining power regulating quantity of each corresponding charging pile according to the product of the residual charging capacity of each electric vehicle and the overpower of the charging station;
determining target operating power of each charging pile according to the difference value between the current operating power of each charging pile and the power regulating quantity;
and performing power control on the corresponding charging pile according to the target operating power.
2. The method of claim 1, wherein the step of controlling the power of the charging pile according to the target operating power comprises:
judging whether the difference value between the current operating power of the charging pile and the corresponding target operating power is within a preset range or not;
if the difference value is within the preset range, maintaining the current operating power of the charging pile unchanged;
and if the difference value is not within the preset range, adjusting the operating power of the charging pile according to the target operating power.
3. The method of claim 1, wherein the charging piles in the scheduling set are determined according to the following steps:
acquiring the residual electric quantity of the electric automobile connected with the charging pile in the charging station;
taking the charging piles meeting the first preset condition in the charging stations as the charging piles in the dispatching set; the first preset condition is that the residual electric quantity of the electric automobile connected with the charging pile in the charging station is larger than a preset residual electric quantity threshold value.
4. The method of claim 1, wherein the charging piles in the scheduling set are determined according to the following steps:
acquiring a charging mode selection signal received by a charging pile in the charging station; the charging mode selection signal comprises an economical charging mode selection signal and an immediate charging mode selection signal;
taking the charging piles meeting second preset conditions in the charging stations as the charging piles in the dispatching set; the second preset condition is that the charging mode selection signal received by the charging pile in the charging station is an economic charging mode selection signal.
5. The method according to claim 1, wherein the step of obtaining the remaining charge capacity of the electric vehicle to which each charging pile is connected comprises:
and acquiring the residual electric quantity and the capacity of a storage battery of the electric vehicle connected with each charging pile, and calculating according to the residual electric quantity and the capacity of the storage battery to obtain the residual charging electric quantity of the electric vehicle connected with each charging pile.
6. A power control apparatus for a charging pile, the apparatus comprising:
the power acquisition module is used for acquiring the current operating power of the charging station and the current operating power of the charging piles in the dispatching set; the dispatching set refers to a set of charging piles subjected to power control in the charging stations;
the overpower calculation module is used for determining overpower of the charging station according to a difference value between the current operating power of the charging station and the preset maximum charging power if the current operating power of the charging station is larger than the preset maximum charging power;
the duty ratio calculation module is used for acquiring the residual charging capacity of the electric vehicles connected with the charging piles and determining the residual charging capacity ratio of each electric vehicle; the remaining charging capacity ratio is a ratio of the remaining charging capacity of the electric vehicle connected with the charging pile to the sum of the remaining charging capacities of all the electric vehicles connected with the charging pile in the scheduling set;
the power regulating quantity calculating module is used for determining the power regulating quantity of each corresponding charging pile according to the product of the residual charging capacity of each electric vehicle and the overpower of the charging station;
the target operating power calculation module is used for determining the target operating power of each charging pile according to the difference value between the current operating power of each charging pile and the power regulating quantity;
and the power control module is used for carrying out power control on the corresponding charging pile according to the target operating power.
7. The power control device of the charging pile according to claim 6, wherein the power control module comprises a power judging unit and a power control unit;
the power judgment unit is used for judging whether the difference value between the current operating power of the charging pile and the corresponding target operating power is within a preset range;
the power control unit is used for maintaining the current operating power of the charging pile unchanged if the difference value is within the preset range; and the power control unit is further used for adjusting the operating power of the charging pile according to the target operating power if the difference value is not within the preset range.
8. The device of claim 6, wherein the proportion calculation module comprises a remaining charging capacity acquisition submodule configured to acquire a remaining charging capacity of the electric vehicle to which each charging pile is connected;
the remaining charge capacity acquisition submodule includes:
the numerical value acquisition unit is used for acquiring the residual electric quantity and the capacity of the storage battery of the electric automobile connected with each charging pile;
and the residual charging electric quantity calculating unit is used for calculating according to the residual electric quantity and the capacity of the storage battery to obtain the residual charging electric quantity of the electric vehicle connected with each charging pile.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 5.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 5.
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