CN114069612A - Charging pile access control method and device, computer equipment and storage medium - Google Patents

Charging pile access control method and device, computer equipment and storage medium Download PDF

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Publication number
CN114069612A
CN114069612A CN202111262889.7A CN202111262889A CN114069612A CN 114069612 A CN114069612 A CN 114069612A CN 202111262889 A CN202111262889 A CN 202111262889A CN 114069612 A CN114069612 A CN 114069612A
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Prior art keywords
charging
piles
pile
charging piles
accessible
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Inventor
范晋衡
邱朝明
曲大鹏
刘琦颖
吴子俊
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Guangzhou Power Supply Bureau of Guangdong Power Grid Co Ltd
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Guangzhou Power Supply Bureau of Guangdong Power Grid Co Ltd
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Publication of CN114069612A publication Critical patent/CN114069612A/en
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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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
    • H02J3/0075—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source according to economic or energy efficiency considerations, e.g. economic dispatch
    • 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
    • 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
    • B60L53/67—Controlling two or more charging stations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
    • G06Q10/063—Operations research, analysis or management
    • G06Q10/0635—Risk analysis of enterprise or organisation activities
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/06—Energy or water supply
    • 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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
    • H02J3/144—Demand-response operation of the power transmission or distribution network
    • 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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • H02J3/322—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
    • 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
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T10/00—Road transport of goods or passengers
    • 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
    • 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
    • Y02T90/12—Electric charging stations
    • 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]
    • 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
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
    • 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
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    • Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
    • Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
    • Y04S30/12—Remote or cooperative charging
    • 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
    • Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
    • Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
    • Y04S30/14—Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

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Abstract

The application relates to a charging pile access control method and device, computer equipment and a storage medium. The method comprises the following steps: calculating a power distribution network operation risk index according to a preset charging load evaluation model; judging whether the operation risk index of the power distribution network is over-limit or not; when the operation risk index of the power distribution network is over-limited, calculating a target total power after the charging total power is adjusted by a preset proportion; determining the number of accessible charging piles according to the target total power; and orderly charging control is carried out on the charging pile according to the number of the accessible charging piles. By adopting the method, the operation risk of the power distribution network can be reduced.

Description

Charging pile access control method and device, computer equipment and storage medium
Technical Field
The application relates to the technical field of power distribution control, in particular to a charging pile access control method and device, computer equipment and a storage medium.
Background
In recent years, driven by the requirements of carbon emission reduction and environmental protection, Electric Vehicles (EVs) are rapidly developed, and a huge charging load increment brings great challenges to the planning and construction of urban power distribution networks. When the construction condition of the distribution network is mismatched with the popularization speed of the EV, the access of the charging load causes a significant risk to the safe operation of the distribution network. Therefore, the connected charging piles need to be controlled, so that the safe operation of the power distribution network is guaranteed.
Disclosure of Invention
In view of the foregoing, it is necessary to provide a charging pile access control method, a charging pile access control apparatus, a computer device, and a storage medium, which can reduce the operation risk of a power distribution network.
A charging pile access control method comprises the following steps:
calculating a power distribution network operation risk index according to a preset charging load evaluation model;
judging whether the operation risk index of the power distribution network is over-limit or not;
when the operation risk index of the power distribution network is over-limited, calculating a target total power after the charging total power is adjusted by a preset proportion;
determining the number of accessible charging piles according to the target total power;
and performing ordered charging control on the charging pile according to the number of the accessible charging piles.
In one embodiment, the calculating the distribution network operation risk index according to the preset charging load evaluation model includes:
calculating the service quantity of the first electric automobile according to the quantity of the dispersed charging piles and the first pile ratio;
calculating the service quantity of the second electric automobile according to the quantity of the centralized charging piles and the second pile ratio;
calculating the total number of electric automobile services in an area covered by the power distribution network according to the first number of electric automobile services and the second number of electric automobile services;
calculating the total charging power of the charging pile according to the sampled and generated use state parameters of the user on the charging pile and the total number of the electric automobile services;
and calculating the operation risk index of the power distribution network according to the charging load evaluation model and the total charging power.
In one embodiment, the step of performing ordered charging control on the charging pile according to the number of the accessible charging piles comprises:
acquiring the type of each charging pile; the types of the charging piles comprise direct current charging piles and alternating current charging piles;
disconnecting a plurality of alternating current charging piles until the number of the charging piles which are connected is not more than the number of the charging piles which can be connected, or disconnecting all the alternating current charging piles;
if all the alternating current charging piles are disconnected and the number of the connected charging piles is still larger than the number of the accessible charging piles, selecting a plurality of direct current charging piles to be disconnected so that the number of the connected charging piles is not larger than the number of the accessible charging piles.
In one embodiment, the step of selecting a number of disconnected charging piles from each of the dc charging piles so that the number of connected charging piles is not greater than the number of accessible charging piles includes:
acquiring the access time of each direct current charging pile;
sequencing the access time of each direct current charging pile;
the accessible that remains the access time shorter fills electric pile several direct current and fills electric pile and inserts, and remaining direct current fills the disconnection.
In one embodiment, the step of selecting a number of disconnected charging piles from each of the dc charging piles so that the number of connected charging piles is not greater than the number of accessible charging piles includes:
acquiring the residual electric quantity of the vehicle connected to each direct current charging pile;
sequencing the residual electric quantity of each vehicle;
and determining the direct current charging piles which need to be disconnected according to the sequence of the residual electric quantity of the vehicle from high to low, so that the number of the connected charging piles is not more than the number of the accessible charging piles.
In one embodiment, the step of performing ordered charging control on the charging pile according to the number of the accessible charging piles comprises:
acquiring the access time of each charging pile;
sequencing the access time of each charging pile;
the accessible that remains the access time is shorter fills electric pile several and fills electric pile and inserts, and the disconnection is filled to the surplus.
In one embodiment, the step of performing ordered charging control on the charging pile according to the number of the accessible charging piles comprises:
acquiring the residual electric quantity of the vehicle accessed by each charging pile;
sequencing the residual electric quantity of each vehicle;
and determining the charging piles needing to be disconnected according to the sequence of the residual electric quantity of the vehicle from high to low, so that the number of the connected charging piles is not more than the number of the accessible charging piles.
A charging pile access control device, the device comprising:
the risk index calculation module is used for calculating the operation risk index of the power distribution network according to a preset charging load evaluation model;
the over-limit judging module is used for judging whether the operation risk index of the power distribution network is over-limit or not;
the target total power calculation module is used for calculating target total power after the charging total power is adjusted by a preset proportion when the operation risk index of the power distribution network is excessive;
the accessible charging pile number determining module is used for determining the accessible charging pile number according to the target total power;
and the ordered charging control module is used for carrying out ordered charging control on the charging pile according to the number of the accessible charging piles.
A computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:
calculating a power distribution network operation risk index according to a preset charging load evaluation model;
judging whether the operation risk index of the power distribution network is over-limit or not;
when the operation risk index of the power distribution network is over-limited, calculating a target total power after the charging total power is adjusted by a preset proportion;
determining the number of accessible charging piles according to the target total power;
and performing ordered charging control on the charging pile according to the number of the accessible charging piles.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
calculating a power distribution network operation risk index according to a preset charging load evaluation model;
judging whether the operation risk index of the power distribution network is over-limit or not;
when the operation risk index of the power distribution network is over-limited, calculating a target total power after the charging total power is adjusted by a preset proportion;
determining the number of accessible charging piles according to the target total power;
and performing ordered charging control on the charging pile according to the number of the accessible charging piles.
According to the charging pile access control method, the charging pile access control device, the computer equipment and the storage medium, the preset charging load evaluation model is used for calculating the operation risk index of the power distribution network, when the operation risk index of the power distribution network is over-limited, the preset proportion is adjusted downwards on the basis of the total charging power, the target total power is determined, the number of accessible charging piles is determined according to the target total power, the charging pile is subjected to ordered charging control according to the number of the accessible charging piles, and then the operation risk of the power distribution network is reduced.
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In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flowchart of a charging pile access control method in an embodiment;
FIG. 2 is a schematic flow chart illustrating a step of calculating an operational risk index of the distribution network according to a preset charging load evaluation model in one embodiment;
FIG. 3 is a flowchart illustrating the steps of controlling the charging of the charging posts according to the number of accessible charging posts in an embodiment;
fig. 4 is a schematic flow chart illustrating the steps of selecting a number of disconnections from the dc charging piles so that the number of charging piles connected is not greater than the number of charging piles that can be connected in one embodiment;
fig. 5 is a schematic flow chart illustrating a step of selecting a plurality of disconnected direct current charging piles from among the direct current charging piles so that the number of the connected charging piles is not greater than the number of the accessible charging piles in another embodiment;
FIG. 6 is a schematic flow chart illustrating the sequential charging control procedure performed on the charging posts according to the number of accessible charging posts in another embodiment;
FIG. 7 is a schematic flowchart illustrating the sequential charging control procedure performed on the charging posts according to the number of accessible charging posts in yet another embodiment;
FIG. 8 is a block diagram of an exemplary charging pile access control device;
FIG. 9 is a diagram illustrating an internal structure of a computer device according to an embodiment.
FIG. 10 is a diagram showing an internal structure of a computer device according to an embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
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.
It will be understood that the terms "first," "second," and the like as used herein may be used herein to describe various features, but these features are not limited by these terms. These terms are only used to distinguish one feature from another.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In the description of the present application, "a number" means one or more unless specifically limited otherwise.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" or "comprising," or the like, specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.
In the embodiment of the present application, as shown in fig. 1, a charging pile access control method is provided, which includes the following steps:
and S101, calculating the operation risk index of the power distribution network according to a preset charging load evaluation model.
The charging load evaluation module is used for calculating an operation risk index of a power distribution network accessed by the charging station.
And S102, judging whether the operation risk index of the power distribution network is over-limit.
And judging through a preset index limit value, if the operation risk index of the power distribution network exceeds the preset index limit value, judging that the operation risk index of the power distribution network is over-limited, and when the operation risk index of the power distribution network exceeds the index limit value, increasing the safe operation risk of the power distribution network.
And S103, when the operation risk index of the power distribution network is excessive, calculating the target total power after the charging total power is adjusted by a preset proportion.
The total charging power refers to the sum of powers of charging piles accessed to the power distribution network at a certain moment, and may be the total charging power in an actual operating state or the total charging power estimated according to sampling data. When the operation risk index of the power distribution network is over-limited, the load of the power distribution network needs to be reduced, the operation safety of the power distribution network is further ensured, the preset proportion can be adjusted on the basis of the total charging power, the preset proportion is used as the target total power for reducing the operation risk index of the power distribution network, and then the access of the charging pile is controlled.
And step S104, determining the number of accessible charging piles according to the target total power.
And reversely calculating the number of the accessible charging piles according to the target total power, further actually controlling the number of the accessible charging piles, and reducing the total power of the actually accessed charging piles to be less than or equal to the target total power.
And S105, performing ordered charging control on the charging pile according to the number of the accessible charging piles.
If the part of the charging piles is disconnected simply without screening, the use of the user is seriously influenced, so that the charging piles accessed at each moment can be orderly scheduled according to factors such as the access duration of the charging piles, the residual electric quantity of the vehicle being charged or the types of the charging piles, and the normal use of the user is guaranteed while the operation safety of the power distribution network is guaranteed.
According to the charging pile access control method, the preset charging load evaluation model is used for calculating the operation risk index of the power distribution network, when the operation risk index of the power distribution network is over-limited, the preset proportion is adjusted down on the basis of the total charging power, the target total power is determined, the number of accessible charging piles is determined according to the target total power, the charging piles are subjected to ordered charging control according to the number of accessible charging piles, and the operation risk of the power distribution network is further reduced.
In one embodiment, the operation risk index of the power distribution network can be evaluated in a charging pile planning and designing stage, and when the operation risk index of the power distribution network is out of limit according to an evaluation result, the operation risk of the power distribution network can be reduced to be in a safety interval by measures such as power distribution network reconstruction optimization, power distribution network capacity expansion, double-fed line common power supply and the like.
In one embodiment, as shown in fig. 2, the calculating the distribution network operation risk index according to the preset charging load evaluation model includes:
and step 201, calculating the service quantity of the first electric automobile according to the quantity of the dispersed charging piles and the first pile ratio.
Calculating the service quantity of the first electric vehicles of the distributed charging piles, and assuming that the total quantity of N of the distributed charging piles in a power supply area of a certain feeder line is Nch_sFirst pile ratio is kvpsAnd then the service quantity N of the first electric vehicles served by the charging piles is dispersedEV_sIt can be estimated that:
NEV_s＝[kvpsNch_s]
wherein [ ] denotes rounding.
And 202, calculating the service quantity of the second electric automobile according to the quantity of the centralized charging piles and the second pile ratio.
Calculating the second electric vehicle service quantity of the centralized charging piles in a certain charging station g, and assuming that certain charging piles of the charging stations g in a certain feeder line power supply area are shared
Figure BDA0003326149580000081
The second pile ratio is
Figure BDA0003326149580000082
The number of EVs serviced by the charging station g can be estimated as:
Figure BDA0003326149580000091
wherein the content of the first and second substances,
Figure BDA0003326149580000092
and the number of the cars serving the q-th charging pile of the charging station g.
The second electric vehicle service quantity served by the charging station g can be estimated as:
Figure BDA0003326149580000093
wherein N isEVfz(g) A second electric vehicle service number for serving the charging station g; q. q.s0The charging type number of the charging piles for the charging station g can be a quick charging pile and a slow charging pile, can also be a direct current charging pile and an alternating current charging pile, and can also adopt other classification modes in some embodiments.
And step 203, calculating the total number of the electric vehicle services in the area covered by the power distribution network according to the first electric vehicle service number and the second electric vehicle service number.
And calculating the sum of the first electric vehicle service quantity summed by all the distributed charging piles in the area covered by the power distribution network and the second electric vehicle service quantity summed by all the charging stations, namely the total electric vehicle service quantity of the area covered by the power distribution network.
And 204, calculating the total charging power of the charging pile according to the sampled use state parameters of the user on the charging pile and the total number of the electric automobile services.
According to the probability distribution of the traveling and charging behaviors of the users, Monte Carlo sampling is adopted to generate the use State parameters such as the initial SOC (State of Charge), the traveling time, the charging starting time and the like of each user, so that the charging time period and the charging duration of the user can be determined, and the charging load of the user can be solved.
Knowing the charge start time t of the userc0And charging duration Tc1Then, the charging end time of the user is: t is tw＝tc0+Tc1At a time period [ t ]c0，tw]In the method, the charging state of the electric vehicle user is "charging", and is recorded as 1, otherwise is recorded as 0:
Figure BDA0003326149580000094
wherein the content of the first and second substances,
Figure BDA0003326149580000095
the charging state of the ith user at the time t.
For the electric automobile charged in the dispersed charging pile, the charging state of the electric automobile is generated through Monte Carlo sampling, and the pile number and the busyness in the charging process of each time period of the dispersed charging pile in the feeder line power supply area can be calculated as follows:
Figure BDA0003326149580000101
ρch_s(t)＝Nu_s(t)/Nch_s
wherein N isu_s(t) and ρch_s(t) the number of piles and the busyness of the dispersed charging piles at the time t are respectively,
Figure BDA0003326149580000102
and the charging state of the ith electric vehicle charged in the distributed charging pile at the moment t.
The charging power P of the dispersed charging pile at the moment tch_s(t) is:
Pch_s(t)＝Nu_s(t)Ps0
wherein, Ps0The rated charging power of the charging pile is dispersed.
Suppose that a certain type of charging pile in a charging station g in a certain feeder line power supply area has
Figure BDA0003326149580000103
Number of EV's served per day
Figure BDA0003326149580000104
The charging states of the users are generated by Monte Carlo sampling, and the pile number and the busyness of the charging piles in each time period are as follows:
Figure BDA0003326149580000105
Figure BDA0003326149580000106
wherein the content of the first and second substances,
Figure BDA0003326149580000107
and
Figure BDA0003326149580000108
respectively the number of charging piles and the busyness of the q-th charging pile in the charging station g at the moment t;
Figure BDA0003326149580000109
and the charging state of the ith electric vehicle charged in the charging station g at the moment t is obtained.
The charging power of the charging station of the type in the charging station g at the moment t is as follows:
Figure BDA00033261495800001010
wherein the content of the first and second substances,
Figure BDA00033261495800001011
the rated charging power of the charging pile is obtained.
The charging power of the charging station g at the time t
Figure BDA00033261495800001012
Comprises the following steps:
Figure BDA0003326149580000111
and step 205, calculating the operation risk index of the power distribution network according to the charging load evaluation model and the charging total power.
The operation risk index of the power distribution network is calculated by comprehensively considering the voltage and current out-of-limit risk and the distribution transformer overload risk, and the loss severity S of the node voltage and the branch current is as follows:
Figure BDA0003326149580000112
wherein w is the loss amount; mu is an amplification factor used for adjusting the sensitivity of the severity of the loss; e is a natural number.
The overload loss severity of the distribution transformer can be calculated by the following formula:
Figure BDA0003326149580000113
Figure BDA0003326149580000114
wherein S ispbSeverity of overload loss; w is apThe loss amount of the load rate of the distribution transformer is; f. ofpThe load rate of the distribution transformer is the ratio of the total charging power to the distribution capacity; f. ofm0Is the load rate limit of the distribution transformer overload. .
Then, the distribution network operation risk index is:
Hwmax＝1,2,…,24max
Hw(t)＝β1Hv(t)+β2Hl(t)+β3Hp(t)
Figure BDA0003326149580000115
wherein HwmaxIs the maximum operational risk during the day; hw(t) is the operational risk at time t; beta is a1、β2、β3The values are 1/3 for the weight coefficients; hv(t) and Hl(t) average voltage out-of-limit risk and average current out-of-limit risk at time t, respectively; sv_i(t) the severity of voltage loss at node i at time t; sl_i(t) is the severity of current loss of branch i at time t; hp(t) and Sp(t) distribution transformer overload risk and overload loss severity at time t; z is a radical of1Number of nodes for distribution network, z2The number of the branches of the distribution network.
In one embodiment, the comprehensive traveling risk H of the power distribution networkwmax>HlimitIn time, the ordered charging load is started, wherein HlimitTypically 35.
In one embodiment, as shown in fig. 3, the step of performing ordered charging control on the charging pile according to the number of accessible charging piles includes:
step 301, obtaining the type of each charging pile.
The charging pile comprises a direct current charging pile and an alternating current charging pile. And then determining the number of each type of charging pile.
And step 302, disconnecting a plurality of alternating current charging piles until the number of the connected charging piles is not more than the number of the connectable charging piles, or all the alternating current charging piles are disconnected.
Firstly, the alternating current charging piles are selected to be disconnected, illustratively, if the number of the accessible charging piles is M, after a certain number of alternating current piles are disconnected, if the number of the remaining accessed charging piles is equal to M, the remaining charging piles are kept to be continuously connected; if all the ac charging piles are disconnected and the number of the remaining connected charging piles is still greater than M, step 303 is executed.
And 303, if all the alternating current charging piles are disconnected and the number of the connected charging piles is still larger than the number of the accessible charging piles, selecting a plurality of disconnected direct current charging piles from all the direct current charging piles so that the number of the connected charging piles is not larger than the number of the accessible charging piles.
At this moment, the number of the direct current charging piles is larger than M, and then part of the direct current charging piles are disconnected, so that the number of the residual connected charging piles is equal to M.
In one embodiment, as shown in fig. 4, the step of selecting a number of disconnected direct current charging piles from among the direct current charging piles so that the number of connected charging piles is not greater than the number of accessible charging piles includes:
step 401, obtaining access time of each direct current charging pile.
The access time is the time for the power distribution network to supply power to the electric vehicle so that the charging pile charges the electric vehicle.
Step 402, sequencing the access time of each direct current charging pile;
and sequencing according to the access time of each direct current charging pile.
And step 403, reserving a plurality of direct current charging piles which can be accessed for accessing the charging piles within a short access time, and disconnecting the rest direct current charging piles.
The disconnection of the direct current charging pile with the longer access time is preferentially selected, the direct current charging pile with the longer access time means that the charging time of the electric automobile is longer, the relative charging amount of the electric automobile is higher, the direct current charging pile with the longer access time is disconnected at the moment, the electric automobile with the shorter charging time is ensured to be charged, and the influence on users caused by the operation risk of a control power distribution network is reduced.
In one embodiment, as shown in fig. 5, the step of selecting a number of disconnected charging piles from each of the dc charging piles so that the number of connected charging piles is not greater than the number of accessible charging piles includes:
step 501, obtaining the remaining electric quantity of the vehicle to which each direct current charging pile is connected.
Fill electric pile and all can acquire electric automobile's vehicle residual capacity, can acquire the vehicle residual capacity that each direct current fills electric pile and insert through with filling electric pile communication.
And 502, sequencing the residual electric quantity of each vehicle.
And sequencing the residual electric quantity of each vehicle according to the electric quantity.
Step 503, determining the direct current charging piles needing to be disconnected according to the sequence of the residual electric quantity of the vehicle from high to low, so that the number of the connected charging piles is not more than the number of the accessible charging piles.
The direct current that the preference was higher for the vehicle residual capacity electric automobile charges fills electric pile disconnection, guarantees earlier that the lower electric automobile of vehicle residual capacity charges, reduces because the influence that control distribution network operation risk produced the user.
In one embodiment, as shown in fig. 6, the step of performing ordered charging control on the charging pile according to the number of accessible charging piles includes:
step 601, obtaining the access time of each charging pile.
The access time is the time for the power distribution network to supply power to the electric vehicle so that the charging pile charges the electric vehicle.
Step 602, the access time of each charging pile is sequenced.
And sequencing according to the access time of each charging pile.
Step 603, reserving a plurality of charging piles which can be accessed for accessing the charging piles with short access time, and disconnecting the rest charging piles.
The longer electric pile disconnection that fills of preferred selection access time, because the longer electric pile that fills of access time means that for electric automobile charging time longer, electric automobile relative charge volume is higher, this part of electric pile that fills of disconnection earlier this moment, guarantees earlier that the electric automobile that the charging time is shorter charges, reduces because the influence that control distribution network operation risk produced the user.
In one embodiment, as shown in fig. 7, the step of performing ordered charging control on the charging pile according to the number of accessible charging piles includes:
and 701, acquiring the residual electric quantity of the vehicle accessed by each charging pile.
Fill electric pile and all can acquire electric automobile's vehicle residual capacity, can acquire the vehicle residual capacity that each fills electric pile and insert through with filling electric pile communication.
Step 702, sequencing the residual electric quantity of each vehicle.
And sequencing the residual electric quantity of each vehicle according to the electric quantity.
And 703, determining the charging piles needing to be disconnected according to the sequence of the residual electric quantity of the vehicle from high to low, so that the number of the connected charging piles is not more than the number of the accessible charging piles.
The charging pile for charging the electric automobile with the higher vehicle residual capacity is preferentially selected to be disconnected, the electric automobile with the lower vehicle residual capacity is firstly ensured to be charged, and the influence on users caused by the control of the operation risk of the power distribution network is reduced.
It should be understood that although the various steps in the flowcharts of fig. 1-7 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. 1-7 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. 8, there is provided a charging pile access control device 800, including:
a risk index calculation module 801, configured to calculate an operation risk index of the power distribution network according to a preset charging load evaluation model;
an over-limit judging module 802, configured to judge whether the power distribution network operation risk index is over-limit;
a target total power calculating module 803, configured to calculate a target total power after the charging total power is reduced by a preset proportion when the power distribution network operation risk index is exceeded;
an accessible charging pile number determining module 804, configured to determine an accessible charging pile number according to the target total power;
and the ordered charging control module 805 is used for performing ordered charging control on the charging pile according to the number of the accessible charging piles.
For specific limitations of the charging pile access control device, reference may be made to the above limitations on the charging pile access control method, which is not described herein again. All modules in the charging pile access control device can be completely or partially realized through software, hardware and a combination of the software and the hardware. 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 server, and its internal structure diagram may be as shown in fig. 9. The computer device includes a processor, a memory, and a network interface 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, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the computer device is used for storing data. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a charging pile access control method.
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 charging pile access control method. 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 configurations shown in fig. 9 and 10 are block diagrams of only some of the configurations relevant to the present disclosure, and do not constitute a limitation on the computing devices to which the present disclosure may be applied, and that a particular computing device 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:
calculating a power distribution network operation risk index according to a preset charging load evaluation model;
judging whether the operation risk index of the power distribution network is over-limit or not;
when the operation risk index of the power distribution network is over-limited, calculating a target total power after the charging total power is adjusted by a preset proportion;
determining the number of accessible charging piles according to the target total power;
and performing ordered charging control on the charging pile according to the number of the accessible charging piles.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
calculating the service quantity of the first electric automobile according to the quantity of the dispersed charging piles and the first pile ratio;
calculating the service quantity of the second electric automobile according to the quantity of the centralized charging piles and the second pile ratio;
calculating the total number of electric automobile services in an area covered by the power distribution network according to the first number of electric automobile services and the second number of electric automobile services;
calculating the total charging power of the charging pile according to the sampled and generated use state parameters of the user on the charging pile and the total number of the electric automobile services;
and calculating the operation risk index of the power distribution network according to the charging load evaluation model and the total charging power.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
acquiring the type of each charging pile; the types of the charging piles comprise direct current charging piles and alternating current charging piles;
disconnecting a plurality of alternating current charging piles until the number of the charging piles which are connected is not more than the number of the charging piles which can be connected, or disconnecting all the alternating current charging piles;
if all the alternating current charging piles are disconnected and the number of the connected charging piles is still larger than the number of the accessible charging piles, selecting a plurality of direct current charging piles to be disconnected so that the number of the connected charging piles is not larger than the number of the accessible charging piles.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
acquiring the access time of each direct current charging pile;
sequencing the access time of each direct current charging pile;
the accessible that remains the access time shorter fills electric pile several direct current and fills electric pile and inserts, and remaining direct current fills the disconnection.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
acquiring the residual electric quantity of the vehicle connected to each direct current charging pile;
sequencing the residual electric quantity of each vehicle;
and determining the direct current charging piles which need to be disconnected according to the sequence of the residual electric quantity of the vehicle from high to low, so that the number of the connected charging piles is not more than the number of the accessible charging piles.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
acquiring the access time of each charging pile;
sequencing the access time of each charging pile;
the accessible that remains the access time is shorter fills electric pile several and fills electric pile and inserts, and the disconnection is filled to the surplus.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
acquiring the residual electric quantity of the vehicle accessed by each charging pile;
sequencing the residual electric quantity of each vehicle;
and determining the charging piles needing to be disconnected according to the sequence of the residual electric quantity of the vehicle from high to low, so that the number of the connected charging piles is not more than the number of the accessible charging piles.
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:
calculating a power distribution network operation risk index according to a preset charging load evaluation model;
judging whether the operation risk index of the power distribution network is over-limit or not;
when the operation risk index of the power distribution network is over-limited, calculating a target total power after the charging total power is adjusted by a preset proportion;
determining the number of accessible charging piles according to the target total power;
and performing ordered charging control on the charging pile according to the number of the accessible charging piles.
In one embodiment, the computer program when executed by the processor further performs the steps of:
calculating the service quantity of the first electric automobile according to the quantity of the dispersed charging piles and the first pile ratio;
calculating the service quantity of the second electric automobile according to the quantity of the centralized charging piles and the second pile ratio;
calculating the total number of electric automobile services in an area covered by the power distribution network according to the first number of electric automobile services and the second number of electric automobile services;
calculating the total charging power of the charging pile according to the sampled and generated use state parameters of the user on the charging pile and the total number of the electric automobile services;
and calculating the operation risk index of the power distribution network according to the charging load evaluation model and the total charging power.
In one embodiment, the computer program when executed by the processor further performs the steps of:
acquiring the type of each charging pile; the types of the charging piles comprise direct current charging piles and alternating current charging piles;
disconnecting a plurality of alternating current charging piles until the number of the charging piles which are connected is not more than the number of the charging piles which can be connected, or disconnecting all the alternating current charging piles;
if all the alternating current charging piles are disconnected and the number of the connected charging piles is still larger than the number of the accessible charging piles, selecting a plurality of direct current charging piles to be disconnected so that the number of the connected charging piles is not larger than the number of the accessible charging piles.
In one embodiment, the computer program when executed by the processor further performs the steps of:
acquiring the access time of each direct current charging pile;
sequencing the access time of each direct current charging pile;
the accessible that remains the access time shorter fills electric pile several direct current and fills electric pile and inserts, and remaining direct current fills the disconnection.
In one embodiment, the computer program when executed by the processor further performs the steps of:
acquiring the residual electric quantity of the vehicle connected to each direct current charging pile;
sequencing the residual electric quantity of each vehicle;
and determining the direct current charging piles which need to be disconnected according to the sequence of the residual electric quantity of the vehicle from high to low, so that the number of the connected charging piles is not more than the number of the accessible charging piles.
In one embodiment, the computer program when executed by the processor further performs the steps of:
acquiring the access time of each charging pile;
sequencing the access time of each charging pile;
the accessible that remains the access time is shorter fills electric pile several and fills electric pile and inserts, and the disconnection is filled to the surplus.
In one embodiment, the computer program when executed by the processor further performs the steps of:
acquiring the residual electric quantity of the vehicle accessed by each charging pile;
sequencing the residual electric quantity of each vehicle;
and determining the charging piles needing to be disconnected according to the sequence of the residual electric quantity of the vehicle from high to low, so that the number of the connected charging piles is not more than the number of the accessible charging piles.
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), among others.
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 charging pile access control method is characterized by comprising the following steps:
calculating a power distribution network operation risk index according to a preset charging load evaluation model;
judging whether the operation risk index of the power distribution network is over-limit or not;
when the operation risk index of the power distribution network is over-limited, calculating a target total power after the charging total power is adjusted by a preset proportion;
determining the number of accessible charging piles according to the target total power;
and performing ordered charging control on the charging pile according to the number of the accessible charging piles.
2. The charging pile access control method according to claim 1, wherein the calculating of the distribution network operation risk index according to the preset charging load evaluation model comprises:
calculating the service quantity of the first electric automobile according to the quantity of the dispersed charging piles and the first pile ratio;
calculating the service quantity of the second electric automobile according to the quantity of the centralized charging piles and the second pile ratio;
calculating the total number of electric automobile services in an area covered by the power distribution network according to the first number of electric automobile services and the second number of electric automobile services;
calculating the total charging power of the charging pile according to the sampled and generated use state parameters of the user on the charging pile and the total number of the electric automobile services;
and calculating the operation risk index of the power distribution network according to the charging load evaluation model and the total charging power.
3. The charging pile access control method according to claim 1, wherein the step of performing ordered charging control on the charging pile according to the number of the accessible charging piles comprises the following steps:
acquiring the type of each charging pile; the types of the charging piles comprise direct current charging piles and alternating current charging piles;
disconnecting a plurality of alternating current charging piles until the number of the charging piles which are connected is not more than the number of the charging piles which can be connected, or disconnecting all the alternating current charging piles;
if all the alternating current charging piles are disconnected and the number of the connected charging piles is still larger than the number of the accessible charging piles, selecting a plurality of direct current charging piles to be disconnected so that the number of the connected charging piles is not larger than the number of the accessible charging piles.
4. The charging pile access control method according to claim 3, wherein the step of selecting a number of disconnected charging piles from each of the direct current charging piles so that the number of connected charging piles is not greater than the number of accessible charging piles comprises:
acquiring the access time of each direct current charging pile;
sequencing the access time of each direct current charging pile;
the accessible that remains the access time shorter fills electric pile several direct current and fills electric pile and inserts, and remaining direct current fills the disconnection.
5. The charging pile access control method according to claim 3, wherein the step of selecting a number of disconnected charging piles from each of the direct current charging piles so that the number of connected charging piles is not greater than the number of accessible charging piles comprises:
acquiring the residual electric quantity of the vehicle connected to each direct current charging pile;
sequencing the residual electric quantity of each vehicle;
and determining the direct current charging piles which need to be disconnected according to the sequence of the residual electric quantity of the vehicle from high to low, so that the number of the connected charging piles is not more than the number of the accessible charging piles.
6. The charging pile access control method according to claim 1, wherein the step of performing ordered charging control on the charging pile according to the number of the accessible charging piles comprises the following steps:
acquiring the access time of each charging pile;
sequencing the access time of each charging pile;
the accessible that remains the access time is shorter fills electric pile several and fills electric pile and inserts, and the disconnection is filled to the surplus.
7. The charging pile access control method according to claim 1, wherein the step of performing ordered charging control on the charging pile according to the number of the accessible charging piles comprises the following steps:
acquiring the residual electric quantity of the vehicle accessed by each charging pile;
sequencing the residual electric quantity of each vehicle;
and determining the charging piles needing to be disconnected according to the sequence of the residual electric quantity of the vehicle from high to low, so that the number of the connected charging piles is not more than the number of the accessible charging piles.
8. A charging pile access control device, the device comprising:
the risk index calculation module is used for calculating the operation risk index of the power distribution network according to a preset charging load evaluation model;
the over-limit judging module is used for judging whether the operation risk index of the power distribution network is over-limit or not;
the target total power calculation module is used for calculating target total power after the charging total power is adjusted by a preset proportion when the operation risk index of the power distribution network is excessive;
the accessible charging pile number determining module is used for determining the accessible charging pile number according to the target total power;
and the ordered charging control module is used for carrying out ordered charging control on the charging pile according to the number of the accessible charging piles.
9. A computer device comprising a memory and a processor, the memory storing a computer program, wherein the processor implements the steps of the method of any one of claims 1 to 7 when executing the computer program.
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 7.
CN202111262889.7A 2021-10-28 2021-10-28 Charging pile access control method and device, computer equipment and storage medium Pending CN114069612A (en)

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CN114683902A (en) * 2022-03-31 2022-07-01 江西云杉智能科技有限公司 Split type group control alternating current charging method, control host, system and storage medium
CN116228205A (en) * 2023-03-29 2023-06-06 东莞先知大数据有限公司 Charging pile outage risk diagnosis method, device and storage medium
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CN117955111A (en) * 2024-03-27 2024-04-30 佰聆数据股份有限公司 Distribution transformer capacity load balancing method, device, equipment and medium

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114683902A (en) * 2022-03-31 2022-07-01 江西云杉智能科技有限公司 Split type group control alternating current charging method, control host, system and storage medium
CN116331051A (en) * 2023-03-03 2023-06-27 深圳市永联科技股份有限公司 Power scheduling method and related device based on regional power supply grid
CN116331051B (en) * 2023-03-03 2024-03-19 深圳市永联科技股份有限公司 Power scheduling method and related device based on regional power supply grid
CN116228205A (en) * 2023-03-29 2023-06-06 东莞先知大数据有限公司 Charging pile outage risk diagnosis method, device and storage medium
CN116228205B (en) * 2023-03-29 2023-11-21 东莞先知大数据有限公司 Charging pile outage risk diagnosis method, device and storage medium
CN117955111A (en) * 2024-03-27 2024-04-30 佰聆数据股份有限公司 Distribution transformer capacity load balancing method, device, equipment and medium

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