CN116691414B - Ordered charging service intelligent monitoring management system based on minute-level acquisition - Google Patents

Ordered charging service intelligent monitoring management system based on minute-level acquisition Download PDF

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Publication number
CN116691414B
CN116691414B CN202310968769.1A CN202310968769A CN116691414B CN 116691414 B CN116691414 B CN 116691414B CN 202310968769 A CN202310968769 A CN 202310968769A CN 116691414 B CN116691414 B CN 116691414B
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charging
power
disordered
ordered
period
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CN116691414A (en
Inventor
宋安君
赵永智
徐伟刚
张珺
汪一浩
陶承
曹莉
郭娟娟
宫唯佳
陈健
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Hefei Power Supply Co of State Grid Anhui Electric Power Co Ltd
Feixi Power Supply Co of State Grid Anhui Electric Power Co Ltd
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Hefei Power Supply Co of State Grid Anhui Electric Power Co Ltd
Feixi Power Supply Co of State Grid Anhui Electric Power Co Ltd
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Publication of CN116691414A publication Critical patent/CN116691414A/en
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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
    • 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
    • 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
    • B60L53/66—Data transfer between charging stations and vehicles
    • B60L53/665—Methods related to measuring, billing or payment
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention relates to the field of intelligent monitoring and management of ordered charging service, and particularly discloses an intelligent monitoring and management system of ordered charging service based on minute-level acquisition, which is used for analyzing each adjustment period of unordered charging and the power consumption down-regulation quantity of each adjustment period through a power consumption characteristic curve of unordered charging of an electric automobile and a power consumption trend curve of a regional power grid; acquiring the approach time, the residual electric quantity and the rated charging power of each orderly-charged electric automobile, analyzing the charging sequence of orderly charging, and acquiring the charging time of each orderly-charged batch and each orderly-charged electric automobile charged in each batch according to the charging power characteristic curve of unordered charging of the electric automobile and the charging sequence of orderly charging; the charging regulation and control mode with ordered charging sequence regulation and control as a main mode and disordered charging power regulation and control as an auxiliary mode is adopted, the existing ordered charging regulation and control system is perfected, the power grid resource allocation efficiency is effectively improved, and the stability and reliability of power grid operation are improved.

Description

Ordered charging service intelligent monitoring management system based on minute-level acquisition
Technical Field
The invention relates to the field of intelligent monitoring and management of ordered charging service, in particular to an intelligent monitoring and management system of ordered charging service based on minute-level acquisition.
Background
In recent years, electric vehicles and charging infrastructures are exploded, and large-scale electric vehicles are connected into a power grid in disorder, so that not only can electric loads be rapidly increased, power supply pressure be increased, peak-valley difference is increased increasingly, and further challenges are brought to power grid planning and stable operation, but also voltage drop existing in a local power grid can be aggravated, and branch capacity is not matched, so that electric energy quality is affected.
In order to reduce adverse effects of large-scale charging of electric vehicles on safe and stable operation of a power distribution network, a plurality of areas begin to implement an ordered charging control strategy and a charging pile ordered access strategy, and guide and encourage private electric vehicle users to actively participate in ordered charging.
The existing orderly charging service is mainly used for orderly charging all electric vehicles which can be orderly charged in an area, so that the electricity utilization balance is promoted, the stability and the reliability of a power system are improved, but some defects exist: on the one hand, when the charging sequence of each electric automobile in order charging is analyzed in the existing order charging service, the evaluated index is single, for example, the charging sequence of each electric automobile in order charging is only analyzed from the sequence of the approach time, the residual electric quantity and the charging rate of the electric automobile in order charging are not considered, so that the scientificity and the rationality of the charging sequence in order charging are not strong, and the experience and the enthusiasm of the user in order charging can be greatly reduced due to the unreasonable sequence in order charging.
On the one hand, the existing ordered charging service only stays at the aspect of the charging sequence of ordered charging, the charging access time of each batch of ordered charging and each accessed ordered charging electric automobile are not further expanded and analyzed, and the intelligence is not high.
On the other hand, when the number of the unordered charging electric vehicles in the area is too large and the accumulated electricity consumption and the charging power are high, the pressure of the power grid in the electricity consumption peak period is difficult to effectively relieve only by means of an ordered charging control strategy, and the unordered charging power is regulated and controlled at the moment.
Disclosure of Invention
Aiming at the problems, the invention provides an intelligent monitoring and management system for the ordered charging service based on minute-level acquisition, which realizes the function of intelligent monitoring and management of the ordered charging service.
The technical scheme adopted for solving the technical problems is as follows: the invention provides an ordered charging service intelligent monitoring management system based on minute-level acquisition, which comprises the following components: electric automobile classification statistics module that charges: the method is used for acquiring each orderly charging electric automobile and each unordered charging electric automobile in the target cell parking lot in the monitoring period.
Unordered charging power characteristic curve acquisition module: the method is used for acquiring the starting charging time, the rated charging power and the ending charging time of each disordered charging electric automobile in the target cell parking lot in the monitoring period, and analyzing the power consumption characteristic curve and the charging power characteristic curve of disordered charging of the electric automobiles.
Disordered charging power regulation and control module: the power consumption trend curve used for obtaining the regional power grid judges whether to adjust the charging power of the disordered charging according to the power consumption characteristic curve of the disordered charging of the electric automobile and the power consumption trend curve of the regional power grid, obtains each adjusting period of the disordered charging and the power consumption down-regulating quantity of each adjusting period, and further adjusts the charging power of each disordered charging electric automobile in each adjusting period of the disordered charging.
The ordered charging sequence analysis module is used for: the method is used for acquiring basic information of each orderly-charged electric automobile, wherein the basic information comprises the approach time, the residual electric quantity and the rated charging power, analyzing the charging priority coefficient of each orderly-charged electric automobile and acquiring the charging sequence of orderly charging.
Ordered charging regulation and control module: the method is used for acquiring charging time of each batch of orderly charging and each orderly charging electric vehicle of each batch of orderly charging according to a charging power characteristic curve of disordered charging of the electric vehicles and a charging sequence of orderly charging, and further regulating and controlling charging of each orderly charging electric vehicle in a parking lot of a target district in a monitoring period.
Database: the method is used for storing standard images, battery capacity and rated charging power of various types of electric automobiles, and storing a power consumption trend curve of a regional power grid corresponding to a target cell in each historical year monitoring period and the rated power of a power supply of a charging pile of a parking lot of the target cell.
On the basis of the above embodiment, the specific process of the unordered charging power characteristic curve acquisition module includes: the charging control terminal of the target cell parking lot acquires the starting charging time and the residual electric quantity of each disordered charging electric automobile in the target cell parking lot in the monitoring period, and the starting charging time and the residual electric quantity are respectively recorded as，/>Indicate->Numbering of disordered charging electric vehicles>。
The types of the disordered charging electric vehicles are obtained, the battery capacity and rated charging power of the disordered charging electric vehicles are further obtained, and the disordered charging electric vehicles are respectively recorded as。
By analysis of formulasObtaining the end charging time of each disordered charging electric automobile>Wherein->A correction amount indicating a preset end charge time.
On the basis of the above embodiment, the specific process of the unordered charging power characteristic curve acquisition module further includes: and establishing a two-dimensional coordinate system by taking time as an abscissa and charging power as an ordinate, and drawing a charging reference curve of each disordered charging electric automobile according to the starting charging time, rated charging power and ending charging time of each disordered charging electric automobile in the target cell parking lot in the monitoring period.
Dividing the monitoring period into time periods according to a preset equal time interval principle, numbering the time periods according to the time sequence, obtaining the power consumption and rated charging power of each disordered charging electric automobile in the time periods in the monitoring period, further obtaining the total power consumption and the total charging power of each disordered charging electric automobile in the time periods in the monitoring period, and recording the total power consumption of each disordered charging electric automobile in the time periods in the monitoring period as，/>Indicating the%>Numbering of individual periods>。
And establishing a two-dimensional coordinate system by taking the serial numbers of the time periods as the abscissa and taking the total power consumption as the ordinate, and drawing a power consumption characteristic curve of disordered charging of the electric automobile according to the total power consumption of the disordered charging electric automobile in each time period in the monitoring period.
And establishing a two-dimensional coordinate system by taking the serial numbers of the time periods as the abscissa and taking the total charging power as the ordinate, and drawing a charging power characteristic curve of disordered charging of the electric automobile according to the total charging power of the disordered charging electric automobile in each time period in the monitoring period.
Based on the above embodiment, the specific process of the disordered charging power regulation module includes:acquiring a power consumption trend curve of the regional power grid, further obtaining a power consumption peak time period of the regional power grid, comparing each time period in the monitoring period with the power consumption peak time period of the regional power grid, and if a certain time period in the monitoring period is overlapped with the power consumption peak time period of the regional power grid, marking the time period as a marking time period, and counting to obtain each marking time period in the monitoring period.
According to the total power consumption of the disordered charging electric automobile in each period in the monitoring period, screening to obtain the total power consumption of the disordered charging electric automobile in each marked period in the monitoring period, and marking the total power consumption as +.>，/>Indicate->Number of individual marking periods->。
According to the power consumption trend curve of the regional power grid, acquiring the total power consumption of each marking period in the monitoring period of the regional power grid and the average power consumption in the monitoring period, and respectively recording the total power consumption and the average power consumption as。
The number of orderly charged electric vehicles and unordered charged electric vehicles in the parking lot of the target district in the monitoring period is obtained and respectively recorded as。
By analysis of formulasObtaining the power regulation demand coefficient of each mark period in the monitoring period>Wherein->Threshold value representing total power consumption of unordered charging electric automobile in preset marking period, +.>Indicating the number of periods in the monitoring period.
On the basis of the above embodiment, the specific process of the disordered charging power regulation module further includes: comparing the power regulation demand coefficients of all the marking periods in the monitoring period with a preset power regulation demand coefficient threshold value, if the power regulation demand coefficients of all the marking periods in the monitoring period are smaller than the power regulation demand coefficient threshold value, the charging power of disordered charging is not required to be regulated, otherwise, the charging power of disordered charging is required to be regulated.
And acquiring each marked period when the power regulation demand coefficient is greater than or equal to the power regulation demand coefficient threshold value, and recording each marked period as each regulation period of disordered charge.
Acquiring power regulation demand coefficients of all regulation periods of disordered charging, comparing the power regulation demand coefficients of all regulation periods of disordered charging with the power consumption down-regulation amount corresponding to the preset power regulation demand coefficient range, screening to obtain the power consumption down-regulation amount of all regulation periods of disordered charging, and recording the power consumption down-regulation amount as，/>Indicate->The number of the individual adjustment periods,。
on the basis of the above embodiment, the specific process of the disordered charging power regulation module further includes: acquiring rated charging power of each disordered charging electric automobile in each disordered charging regulation period, and recording the rated charging power as，/>Indicating->Numbering of disordered charging electric vehicles>The number of electric vehicles charged unordered in each regulation period of unordered charging is obtained and is recorded as +.>。
By analysis of formulasObtaining the actual charging power of each disordered charging electric automobile in each regulating period of disordered charging>Wherein->A correction factor representing the preset actual charging power,indicating the duration of a single period of time in a preset monitoring period.
And regulating the charging power of each disordered charging electric automobile in each regulation period of disordered charging according to the rated charging power and the actual charging power of each disordered charging electric automobile in each regulation period of disordered charging.
Based on the above embodiment, the specific process of the ordered charging sequence analysis module is: acquiring the approach time of each orderly charging electric automobile, further acquiring the interval duration between the approach time of each orderly charging electric automobile and the starting time of the monitoring period, and marking the interval duration as，/>Indicate->The serial numbers of the electric vehicles are sequentially charged,。
the residual electric quantity of each orderly charged electric automobile is obtained through the charging control terminal of the parking lot of the target cell and is recorded as。
Rated charging power of each orderly-charged electric automobile is obtained and is recorded as。
By analysis of formulasObtaining the charging priority coefficient of each orderly charging electric automobile>Wherein->Representing natural constant->Representing orderThe number of charged electric vehicles is set,respectively representing preset approach time, residual electric quantity and weight of charging power.
And sequencing the orderly-charged electric vehicles according to the sequence from the big to the small of the charging priority coefficient of the orderly-charged electric vehicles to obtain the charging sequence of orderly charging.
On the basis of the above embodiment, the specific process of the ordered charging regulation module includes: and obtaining each peak point and each valley point of the disordered charging of the electric automobile according to the charging power characteristic curve of the disordered charging of the electric automobile, obtaining the intermediate time between the corresponding time of the peak point and the corresponding time of the next adjacent valley point, marking the intermediate time as the ordered charging access time, counting to obtain each ordered charging access time, and marking the ordered charging access time as each batch of charging time of ordered charging.
Extracting rated power of a power supply of a charging pile of a target district parking lot stored in a database, subtracting unordered charging power corresponding to ordered charging access time in a charging power characteristic curve of unordered charging of an electric automobile from the rated power of the power supply of the charging pile of the target district parking lot to obtain accessible charging power capacity corresponding to the ordered charging access time, counting to obtain accessible charging power capacity corresponding to each ordered charging access time, and recording the accessible charging power capacity as accessible charging power capacity of charging time of each batch of ordered charging.
On the basis of the above embodiment, the specific process of the ordered charging regulation module further includes: and according to the charging sequence of the ordered charging electric vehicles, the rated charging power of each ordered charging electric vehicle is added in sequence until the rated charging power of each ordered charging electric vehicle is accumulated to a certain ordered charging electric vehicle, the accumulated amount of the rated charging power of each ordered charging electric vehicle is smaller than or equal to the accessible charging power capacity of the charging time of the first ordered charging batch, and the accumulated amount of the rated charging power is larger than the accessible charging power capacity of the charging time of the first ordered charging batch when the rated charging power is accumulated to the next ordered charging electric vehicle of the ordered charging electric vehicle, then the ordered charging electric vehicles and the ordered charging electric vehicles before the ordered charging electric vehicles are marked as ordered charging electric vehicles of the first ordered charging batch, and so on, each ordered charging electric vehicle of each ordered charging batch is obtained.
Compared with the prior art, the intelligent monitoring and management system for the ordered charging service based on the minute-level acquisition has the following beneficial effects: 1. according to the method, the charging sequence of the orderly-charged electric automobile is comprehensively estimated from multiple dimensions of the approach time, the residual electric quantity and the charging power of the orderly-charged electric automobile, so that the sequence of orderly charging is more reasonable and humanized, and the experience and the enthusiasm of orderly-charged users are further improved.
2. According to the charging power characteristic curve of disordered charging of the electric automobile and the charging sequence of ordered charging, the charging time of each batch of ordered charging and each ordered charging electric automobile charged in each batch are obtained, and the intelligentization of ordered charging business is improved.
3. According to the power consumption of the disordered charging of the electric automobile and the power consumption of the regional power grid, the disordered charging power is regulated and controlled, and the power consumption of the disordered charging and the power regulation of the disordered charging are flexibly matched, so that the peak pressure of the power grid is effectively reduced, and the running stability and reliability of the power grid are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a diagram illustrating a system module connection according to the present invention.
Fig. 2 is a schematic diagram of a target cell parking lot charging management system according to the present invention.
Fig. 3 is a schematic diagram of a charging reference curve of each disordered charging electric car according to the invention.
Fig. 4 is a schematic diagram of a power consumption characteristic curve of disordered charging of the electric vehicle.
Fig. 5 is a schematic diagram of a charging power characteristic curve of disordered charging of the electric vehicle.
Fig. 6 is a schematic diagram of the accessible charging power capacity corresponding to the ordered charging access time according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the invention provides an ordered charging service intelligent monitoring management system based on minute-level acquisition, which comprises an electric automobile charging classification statistics module, an unordered charging power characteristic curve acquisition module, an unordered charging power regulation module, an ordered charging sequence analysis module, an ordered charging regulation module and a database.
The electric automobile charging classification statistics module is connected with the unordered charging power characteristic curve acquisition module, the unordered charging power characteristic curve acquisition module is connected with the unordered charging power regulation and control module and the ordered charging sequence analysis module respectively, the ordered charging sequence analysis module is connected with the ordered charging regulation and control module, and the database is connected with the unordered charging power characteristic curve acquisition module, the unordered charging power regulation and control module and the ordered charging regulation and control module respectively.
The electric automobile charging classification statistics module is used for acquiring each ordered charging electric automobile and each unordered charging electric automobile in the target district parking lot in the monitoring period.
As a preferable scheme, the specific process of the electric automobile charging classification statistical module is as follows: referring to fig. 2, the duration of the monitoring period is set, and the charging type of each electric vehicle charged in the target cell parking lot in the monitoring period is obtained through the charging service platform of the target cell parking lot, wherein the charging type comprises ordered charging and disordered charging, and each ordered charging electric vehicle and each disordered charging electric vehicle in the target cell parking lot in the monitoring period are obtained through statistics.
As a preferable scheme, the disordered charge means instant charge, and the charge is immediately carried out after the charge connection is completed; ordered charging means that charging time is flexible, and charging can be waited for after charging connection is completed.
As a priority scheme, an electric automobile owner can log in a charging service platform through code scanning, and then the type of electric automobile charging is selected.
As a preferable scheme, charging unit prices of ordered charging and unordered charging are different, and the charging unit price of ordered charging is lower than that of unordered charging.
The unordered charging power characteristic curve acquisition module is used for acquiring the starting charging time, the rated charging power and the ending charging time of each unordered charging electric automobile in the target cell parking lot in the monitoring period and analyzing the power consumption characteristic curve and the charging power characteristic curve of unordered charging of the electric automobile.
Further, the specific process of the unordered charging power characteristic curve acquisition module includes: the charging control terminal of the target cell parking lot acquires the starting charging time and the residual electric quantity of each disordered charging electric automobile in the target cell parking lot in the monitoring period, and the starting charging time and the residual electric quantity are respectively recorded as，/>Indicate->The number of the disordered charged electric automobile,。
acquiring the type of each disordered charging electric automobile and further obtaining the electricity of each disordered charging electric automobileThe cell capacity and rated charge power are respectively recorded as。
As a preferable scheme, the battery capacity and rated charging power of each disordered charging electric automobile are obtained, and the specific method comprises the following steps: and acquiring images of the disordered charging electric vehicles, extracting standard images of the electric vehicles of various types stored in the database, and comparing the images of the disordered charging electric vehicles with the standard images of the electric vehicles of various types to acquire the types of the disordered charging electric vehicles.
And extracting the battery capacity and rated charging power of each type of electric automobile stored in the database, and screening the battery capacity and the rated charging power of each disordered charging electric automobile according to the type of each disordered charging electric automobile.
By analysis of formulasObtaining the end charging time of each disordered charging electric automobile>Wherein->A correction amount indicating a preset end charge time.
As a preferable scheme, information of parking spaces, charging piles, electric vehicles and electric vehicle owners in a parking lot of a target district is bound one by one.
As a preferable scheme, the method for acquiring the starting charging time and the residual electric quantity of each disordered charging electric automobile in the target cell parking lot in the monitoring period comprises the following steps: an electric car owner selects the type of electric car charging at a charging service platform, acquires each charging pile for disordered charging and the electric car bound by the charging service platform, sends the charging pile to a charging control terminal of a target cell parking lot, and acquires the starting charging time and the residual electric quantity of each disordered charging electric car in the target cell parking lot through the charging control terminal of the target cell parking lot.
As a preferable scheme, the method for acquiring the image of each disordered charging electric automobile comprises the following steps: and acquiring the license plate numbers of the disordered charging electric vehicles by the charging piles and the license plate numbers of the electric vehicles bound by the charging piles through the charging service platform, and acquiring the images of the disordered charging electric vehicles through the high-definition cameras of the parking lot of the target area according to the license plate numbers of the disordered charging electric vehicles.
Further, the specific process of the unordered charging power characteristic curve acquisition module further includes: referring to fig. 3, a two-dimensional coordinate system is established with time as an abscissa and charging power as an ordinate, and charging reference curves of the disordered charging electric vehicles are drawn according to the starting charging time, the rated charging power and the ending charging time of the disordered charging electric vehicles in the target cell parking lot in the monitoring period.
Dividing the monitoring period into time periods according to a preset equal time interval principle, numbering the time periods according to the time sequence, obtaining the power consumption and rated charging power of each disordered charging electric automobile in the time periods in the monitoring period, further obtaining the total power consumption and the total charging power of each disordered charging electric automobile in the time periods in the monitoring period, and recording the total power consumption of each disordered charging electric automobile in the time periods in the monitoring period as，/>Indicating the%>Numbering of individual periods>。
As a preferable scheme, the method for acquiring the total power consumption and the total charging power of the disordered charging electric automobile in each period in the monitoring period comprises the following steps: the method comprises the steps of obtaining the power consumption and rated charging power of each disordered charging electric automobile in each period in a monitoring period, further accumulating to obtain the total power consumption and rated charging power of each disordered charging electric automobile in each period in the monitoring period, and respectively recording the total power consumption and the total charging power of each disordered charging electric automobile in each period in the monitoring period.
Referring to fig. 4, a two-dimensional coordinate system is established with the time period numbered as the abscissa and the total power consumption as the ordinate, and a power consumption characteristic curve of the disordered charging of the electric vehicle is drawn according to the total power consumption of the disordered charging electric vehicle in each time period in the monitoring period.
Referring to fig. 5, a two-dimensional coordinate system is established with the time period number as the abscissa and the total charging power as the ordinate, and a charging power characteristic curve of the disordered charging of the electric vehicle is drawn according to the total charging power of the disordered charging electric vehicle in each time period in the monitoring period.
The unordered charging power regulation and control module is used for acquiring a power consumption trend curve of the regional power grid, judging whether the unordered charging power needs to be regulated according to the power consumption characteristic curve of the unordered charging of the electric automobile and the power consumption trend curve of the regional power grid, acquiring each regulation period of unordered charging and the power consumption down regulation of each regulation period, and further regulating the charging power of each unordered charging electric automobile in each regulation period of unordered charging.
Further, the specific process of the disordered charging power regulation module comprises the following steps:acquiring a power consumption trend curve of the regional power grid, further obtaining a power consumption peak time period of the regional power grid, comparing each time period in the monitoring period with the power consumption peak time period of the regional power grid, and if a certain time period in the monitoring period is overlapped with the power consumption peak time period of the regional power grid, marking the time period as a marking time period, and counting to obtain each marking time period in the monitoring period.
As a preferable scheme, the power consumption trend curve of the regional power grid is obtained by the specific method: and extracting the power consumption trend curves of the regional power grid corresponding to the target cell in each historical year monitoring period stored in the database, fitting the power consumption trend curves of the regional power grid corresponding to the target cell in each historical year monitoring period to obtain estimated power consumption trend curves of the regional power grid corresponding to the target cell in the monitoring period, and recording the estimated power consumption trend curves as the power consumption trend curves of the regional power grid.
According to the total power consumption of the disordered charging electric automobile in each period in the monitoring period, screening to obtain the total power consumption of the disordered charging electric automobile in each marked period in the monitoring period, and marking the total power consumption as +.>，/>Indicate->Number of individual marking periods->。
According to the power consumption trend curve of the regional power grid, acquiring the total power consumption of each marking period in the monitoring period of the regional power grid and the average power consumption in the monitoring period, and respectively recording the total power consumption and the average power consumption as。
The number of orderly charged electric vehicles and unordered charged electric vehicles in the parking lot of the target district in the monitoring period is obtained and respectively recorded as。
By analysis of formulasObtaining the power regulation demand coefficient of each mark period in the monitoring period>Wherein->Threshold value representing total power consumption of unordered charging electric automobile in preset marking period, +.>Indicating the number of periods in the monitoring period.
Further, the specific process of the disordered charging power regulation module further comprises the following steps: comparing the power regulation demand coefficients of all the marking periods in the monitoring period with a preset power regulation demand coefficient threshold value, if the power regulation demand coefficients of all the marking periods in the monitoring period are smaller than the power regulation demand coefficient threshold value, the charging power of disordered charging is not required to be regulated, otherwise, the charging power of disordered charging is required to be regulated.
And acquiring each marked period when the power regulation demand coefficient is greater than or equal to the power regulation demand coefficient threshold value, and recording each marked period as each regulation period of disordered charge.
Acquiring power regulation demand coefficients of all regulation periods of disordered charging, comparing the power regulation demand coefficients of all regulation periods of disordered charging with the power consumption down-regulation amount corresponding to the preset power regulation demand coefficient range, screening to obtain the power consumption down-regulation amount of all regulation periods of disordered charging, and recording the power consumption down-regulation amount as，/>Indicate->The number of the individual adjustment periods,。
as a preferable scheme, the power regulation demand coefficient of each regulation period of disordered charging is obtained, and the specific method is as follows: and screening to obtain the power regulation demand coefficient of each regulation period of disordered charge according to the power regulation demand coefficient of each marking period in the monitoring period.
Further, the specific process of the disordered charging power regulation module further comprises the following steps: acquiring rated charging power of each disordered charging electric automobile in each disordered charging regulation period, and recording the rated charging power as，/>Indicating the first time period in the adjustment periodNumbering of disordered charging electric vehicles>The number of electric vehicles charged unordered in each regulation period of unordered charging is obtained and is recorded as +.>。
As a preferable scheme, the rated charging power of each disordered charging electric automobile in each disordered charging adjustment period is obtained, and the specific process is as follows: and screening to obtain the rated charging power of each disordered charging electric automobile in each regulating period of disordered charging according to the rated charging power of each disordered charging electric automobile in each period of the monitoring period.
By analysis of formulasObtaining the actual charging power of each disordered charging electric automobile in each regulating period of disordered charging>Wherein->Correction factor representing the preset actual charging power, < ->Indicating the duration of a single period of time in a preset monitoring period.
And regulating the charging power of each disordered charging electric automobile in each regulation period of disordered charging according to the rated charging power and the actual charging power of each disordered charging electric automobile in each regulation period of disordered charging.
The invention can regulate and control the power of the disordered charge according to the power consumption of the disordered charge of the electric automobile and the power consumption of the regional power grid, and effectively lighten the peak pressure of the power grid and improve the stability and reliability of the operation of the power grid through flexible coordination of the sequential regulation and control of ordered charge and the power regulation of disordered charge.
The ordered charging sequence analysis module is used for acquiring basic information of each ordered charging electric automobile, wherein the basic information comprises an approach time, a residual electric quantity and rated charging power, and is used for analyzing charging priority coefficients of each ordered charging electric automobile to acquire the charging sequence of ordered charging.
Further, the specific process of the ordered charging sequence analysis module is as follows: acquiring the approach time of each orderly charging electric automobile, further acquiring the interval duration between the approach time of each orderly charging electric automobile and the starting time of the monitoring period, and marking the interval duration as，/>Indicate->Number of orderly charged electric automobile, +.>。
As a preferable scheme, the approach time of each orderly charged electric automobile is obtained, and the specific method comprises the following steps: the method comprises the steps of obtaining the license plate numbers of each charging pile and the electric vehicles bound by each charging pile through a charging service platform, obtaining the license plate numbers of each electric vehicle, and obtaining the approach time of each electric vehicle through a high-definition camera of a target district parking lot according to the license plate numbers of each electric vehicle.
The residual electric quantity of each orderly charged electric automobile is obtained through the charging control terminal of the parking lot of the target cell and is recorded as。
Rated charging power of each orderly-charged electric automobile is obtained and is recorded as。
By analysis of formulasObtaining the charging priority coefficient of each orderly charging electric automobile>Wherein->Representing natural constant->The number of the orderly charged electric vehicles is represented,respectively representing preset approach time, residual electric quantity and weight of charging power.
And sequencing the orderly-charged electric vehicles according to the sequence from the big to the small of the charging priority coefficient of the orderly-charged electric vehicles to obtain the charging sequence of orderly charging.
As a preferred scheme, the method for obtaining the residual electric quantity of each orderly-charged electric automobile comprises the following steps: an electric car owner selects the type of electric car charging at a charging service platform, obtains each charging pile for orderly charging and the electric car bound by the charging pile through the charging service platform, sends the charging pile to a charging control terminal of a target cell parking lot, and obtains the residual electric quantity of each orderly charging electric car in the target cell parking lot through the charging control terminal of the target cell parking lot.
As a preferable scheme, the method for obtaining the rated charging power of each orderly-charged electric automobile is the same as the method for obtaining the rated charging power of each unordered-charged electric automobile in principle.
The method and the device can comprehensively evaluate the charging sequence of the orderly charging electric automobile from multiple dimensions of the approach time, the residual electric quantity and the charging power of the orderly charging electric automobile, so that the sequence of orderly charging is more reasonable and humanized, and the experience and the enthusiasm of orderly charging users are further improved.
The ordered charging regulation and control module is used for acquiring charging time of each batch of ordered charging and each ordered charging electric automobile of each batch of ordered charging according to a charging power characteristic curve of unordered charging of the electric automobile and a charging sequence of ordered charging, and further regulating and controlling charging of each ordered charging electric automobile in a parking lot of a target district in a monitoring period.
Further, the specific process of the ordered charging regulation module comprises the following steps: referring to fig. 6, according to the charging power characteristic curve of the disordered charging of the electric automobile, each peak point and each valley point of the disordered charging of the electric automobile are obtained, the intermediate time between the corresponding time of the peak point and the corresponding time of the next adjacent valley point is obtained, the intermediate time is marked as the ordered charging access time, each ordered charging access time is obtained through statistics, and each batch of charging time of ordered charging is marked.
Extracting rated power of a power supply of a charging pile of a target district parking lot stored in a database, subtracting unordered charging power corresponding to ordered charging access time in a charging power characteristic curve of unordered charging of an electric automobile from the rated power of the power supply of the charging pile of the target district parking lot to obtain accessible charging power capacity corresponding to the ordered charging access time, counting to obtain accessible charging power capacity corresponding to each ordered charging access time, and recording the accessible charging power capacity as accessible charging power capacity of charging time of each batch of ordered charging.
Further, the specific process of the ordered charging regulation module further comprises: and according to the charging sequence of the ordered charging electric vehicles, the rated charging power of each ordered charging electric vehicle is added in sequence until the rated charging power of each ordered charging electric vehicle is accumulated to a certain ordered charging electric vehicle, the accumulated amount of the rated charging power of each ordered charging electric vehicle is smaller than or equal to the accessible charging power capacity of the charging time of the first ordered charging batch, and the accumulated amount of the rated charging power is larger than the accessible charging power capacity of the charging time of the first ordered charging batch when the rated charging power is accumulated to the next ordered charging electric vehicle of the ordered charging electric vehicle, then the ordered charging electric vehicles and the ordered charging electric vehicles before the ordered charging electric vehicles are marked as ordered charging electric vehicles of the first ordered charging batch, and so on, each ordered charging electric vehicle of each ordered charging batch is obtained.
The invention obtains charging time of each batch of ordered charging and each ordered charging electric vehicle of each batch of ordered charging according to the charging power characteristic curve of unordered charging of the electric vehicle and the charging sequence of ordered charging, thereby improving the intellectualization of ordered charging service.
The database is used for storing standard images, battery capacity and rated charging power of various types of electric automobiles, and storing a power consumption trend curve of a regional power grid corresponding to a target cell in each historical year monitoring period and the rated power of a power supply of a charging pile of a parking lot of the target cell.
The foregoing is merely illustrative and explanatory of the principles of this invention, as various modifications and additions may be made to the specific embodiments described, or similar arrangements may be substituted by those skilled in the art, without departing from the principles of this invention or beyond the scope of this invention as defined in the claims.

Claims (8)

1. An ordered charging service intelligent monitoring management system based on minute-level acquisition, which is characterized by comprising:
electric automobile classification statistics module that charges: the method comprises the steps of acquiring ordered charging electric vehicles and unordered charging electric vehicles in a target cell parking lot in a monitoring period;
unordered charging power characteristic curve acquisition module: the method comprises the steps of acquiring starting charging time, rated charging power and ending charging time of each disordered charging electric automobile in a parking lot of a target cell in a monitoring period, and analyzing a power consumption characteristic curve and a charging power characteristic curve of disordered charging of the electric automobiles;
disordered charging power regulation and control module: the method comprises the steps of acquiring a power consumption trend curve of a regional power grid, judging whether the charging power of disordered charging needs to be adjusted according to the power consumption characteristic curve of disordered charging of the electric automobile and the power consumption trend curve of the regional power grid, acquiring each adjusting period of disordered charging and the power consumption down-regulating quantity of each adjusting period, and further adjusting the charging power of each disordered charging electric automobile in each adjusting period of disordered charging;
the ordered charging sequence analysis module is used for: the method comprises the steps of obtaining basic information of each ordered charging electric automobile, wherein the basic information comprises a field time, a residual electric quantity and rated charging power, analyzing charging priority coefficients of each ordered charging electric automobile, and obtaining a charging sequence of ordered charging;
the specific process of the ordered charging sequence analysis module is as follows:
acquiring the approach time of each orderly charging electric automobile, further acquiring the interval duration between the approach time of each orderly charging electric automobile and the starting time of the monitoring period, and marking the interval duration as，/>Indicate->Number of orderly charged electric automobile, +.>；
By passing throughThe charging control terminal of the parking lot of the target cell acquires the residual electric quantity of each orderly charged electric automobile and marks the residual electric quantity as；
Rated charging power of each orderly-charged electric automobile is obtained and is recorded as；
By analysis of formulasObtaining the charging priority coefficient of each orderly charging electric automobile>Wherein->Representing natural constant->Indicates the number of orderly charged electric vehicles, +.>Respectively representing preset approach time, residual electric quantity and weight of charging power;
sequencing all the orderly charged electric vehicles according to the sequence from the big to the small of the charging priority coefficient of the orderly charged electric vehicles to obtain the charging sequence of orderly charging;
ordered charging regulation and control module: the method comprises the steps of acquiring charging time of each batch of orderly charging and each orderly charging electric vehicle charged in each batch according to a charging power characteristic curve of disordered charging of the electric vehicles and a charging sequence of orderly charging, and further regulating and controlling the charging of each orderly charging electric vehicle in a parking lot of a target district in a monitoring period;
database: the method is used for storing standard images, battery capacity and rated charging power of various types of electric automobiles, and storing a power consumption trend curve of a regional power grid corresponding to a target cell in each historical year monitoring period and the rated power of a power supply of a charging pile of a parking lot of the target cell.
2. The intelligent monitoring and management system for ordered charging service based on minute-level collection according to claim 1, wherein the intelligent monitoring and management system is characterized in that: the specific process of the disordered charging power characteristic curve acquisition module comprises the following steps:
the charging control terminal of the target cell parking lot acquires the starting charging time and the residual electric quantity of each disordered charging electric automobile in the target cell parking lot in the monitoring period, and the starting charging time and the residual electric quantity are respectively recorded as，/>Indicate->Numbering of disordered charging electric vehicles>；
The types of the disordered charging electric vehicles are obtained, the battery capacity and rated charging power of the disordered charging electric vehicles are further obtained, and the disordered charging electric vehicles are respectively recorded as；
By analysis of formulasObtaining the end charging time of each disordered charging electric automobile>Wherein->A correction amount indicating a preset end charge time.
3. The intelligent monitoring and management system for ordered charging service based on minute-level collection according to claim 1, wherein the intelligent monitoring and management system is characterized in that: the specific process of the disordered charging power characteristic curve acquisition module further comprises the following steps:
establishing a two-dimensional coordinate system by taking time as an abscissa and charging power as an ordinate, and drawing a charging reference curve of each disordered charging electric automobile according to the starting charging time, rated charging power and ending charging time of each disordered charging electric automobile in a target cell parking lot in a monitoring period;
dividing the monitoring period into time periods according to a preset equal time interval principle, numbering the time periods according to the time sequence, obtaining the power consumption and rated charging power of each disordered charging electric automobile in the time periods in the monitoring period, further obtaining the total power consumption and the total charging power of each disordered charging electric automobile in the time periods in the monitoring period, and recording the total power consumption of each disordered charging electric automobile in the time periods in the monitoring period as，/>Indicating the%>Numbering of individual periods>；
Establishing a two-dimensional coordinate system by taking the serial numbers of the time periods as the abscissa and taking the total power consumption as the ordinate, and drawing a power consumption characteristic curve of disordered charging of the electric automobile according to the total power consumption of the disordered charging electric automobile in each time period in the monitoring period;
and establishing a two-dimensional coordinate system by taking the serial numbers of the time periods as the abscissa and taking the total charging power as the ordinate, and drawing a charging power characteristic curve of disordered charging of the electric automobile according to the total charging power of the disordered charging electric automobile in each time period in the monitoring period.
4. The intelligent monitoring and management system for ordered charging service based on minute-level collection according to claim 3, wherein the intelligent monitoring and management system is characterized in that: the specific process of the disordered charging power regulation module comprises the following steps:
acquiring a power consumption trend curve of a regional power grid, further acquiring a power consumption peak time period of the regional power grid, comparing each time period in a monitoring period with the power consumption peak time period of the regional power grid, and if a certain time period in the monitoring period is overlapped with the power consumption peak time period of the regional power grid, marking the time period as a marking time period, and counting to acquire each marking time period in the monitoring period;
according to the total power consumption of the disordered charging electric automobile in each period in the monitoring period, screening to obtain the total power consumption of the disordered charging electric automobile in each marked period in the monitoring period, and marking the total power consumption as +.>，/>Indicate->Number of individual marking periods->；
According to the power consumption trend curve of the regional power grid, acquiring the total power consumption of each marking period in the monitoring period of the regional power grid and the average power consumption in the monitoring period, and carrying out the monitoringRespectively marked as；
The number of orderly charged electric vehicles and unordered charged electric vehicles in the parking lot of the target district in the monitoring period is obtained and respectively recorded as；
By analysis of formulasObtaining the power regulation demand coefficient of each mark period in the monitoring period>Wherein->Threshold value representing total power consumption of unordered charging electric automobile in preset marking period, +.>Indicating the number of periods in the monitoring period.
5. The intelligent monitoring and management system for ordered charging service based on minute-level collection as claimed in claim 4, wherein: the specific process of the disordered charging power regulation module further comprises the following steps:
comparing the power regulation demand coefficient of each marking period in the monitoring period with a preset power regulation demand coefficient threshold value, if the power regulation demand coefficient of each marking period in the monitoring period is smaller than the power regulation demand coefficient threshold value, the charging power of disordered charging is not required to be regulated, otherwise, the charging power of disordered charging is required to be regulated;
acquiring each marked period when the power regulation demand coefficient is greater than or equal to the power regulation demand coefficient threshold value, and recording the marked period as each regulation period of disordered charge;
acquiring power regulation demand coefficients of all regulation periods of disordered charging, comparing the power regulation demand coefficients of all regulation periods of disordered charging with the power consumption down-regulation amount corresponding to the preset power regulation demand coefficient range, screening to obtain the power consumption down-regulation amount of all regulation periods of disordered charging, and recording the power consumption down-regulation amount as，/>Indicate->The number of the individual adjustment periods,。
6. the intelligent monitoring and management system for ordered charging service based on minute-level collection according to claim 5, wherein the intelligent monitoring and management system is characterized in that: the specific process of the disordered charging power regulation module further comprises the following steps:
acquiring rated charging power of each disordered charging electric automobile in each disordered charging regulation period, and recording the rated charging power as，Indicating->Numbering of disordered charging electric vehicles>The number of electric vehicles charged unordered in each regulation period of unordered charging is obtained and is recorded as +.>；
By analysis of formulasObtaining the actual charging power of each disordered charging electric automobile in each regulating period of disordered charging>Wherein->Correction factor representing the preset actual charging power, < ->The method comprises the steps of representing the duration of a single time period in a preset monitoring period;
and regulating the charging power of each disordered charging electric automobile in each regulation period of disordered charging according to the rated charging power and the actual charging power of each disordered charging electric automobile in each regulation period of disordered charging.
7. The intelligent monitoring and management system for ordered charging service based on minute-level collection according to claim 1, wherein the intelligent monitoring and management system is characterized in that: the specific process of the ordered charging regulation and control module comprises the following steps:
obtaining each peak point and each valley point of the disordered charging of the electric automobile according to the charging power characteristic curve of the disordered charging of the electric automobile, obtaining the intermediate time between the corresponding time of the peak point and the corresponding time of the next adjacent valley point, marking the intermediate time as ordered charging access time, counting to obtain each ordered charging access time, and marking the ordered charging access time as each batch of charging time of ordered charging;
extracting rated power of a power supply of a charging pile of a target district parking lot stored in a database, subtracting unordered charging power corresponding to ordered charging access time in a charging power characteristic curve of unordered charging of an electric automobile from the rated power of the power supply of the charging pile of the target district parking lot to obtain accessible charging power capacity corresponding to the ordered charging access time, counting to obtain accessible charging power capacity corresponding to each ordered charging access time, and recording the accessible charging power capacity as accessible charging power capacity of charging time of each batch of ordered charging.
8. The intelligent monitoring and management system for ordered charging service based on minute-level collection as claimed in claim 7, wherein: the specific process of the ordered charging regulation and control module further comprises the following steps:
and according to the charging sequence of the ordered charging electric vehicles, the rated charging power of each ordered charging electric vehicle is added in sequence until the rated charging power of each ordered charging electric vehicle is accumulated to a certain ordered charging electric vehicle, the accumulated amount of the rated charging power of each ordered charging electric vehicle is smaller than or equal to the accessible charging power capacity of the charging time of the first ordered charging batch, and the accumulated amount of the rated charging power is larger than the accessible charging power capacity of the charging time of the first ordered charging batch when the rated charging power is accumulated to the next ordered charging electric vehicle of the ordered charging electric vehicle, then the ordered charging electric vehicles and the ordered charging electric vehicles before the ordered charging electric vehicles are marked as ordered charging electric vehicles of the first ordered charging batch, and so on, each ordered charging electric vehicle of each ordered charging batch is obtained.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107867187A (en) * 2016-09-28 2018-04-03 华北电力大学 A kind of orderly charge control method of electric automobile towards wind electricity digestion
CN116215297A (en) * 2021-12-03 2023-06-06 国网上海市电力公司经济技术研究院 Ordered charging control method considering charging continuity of electric automobile
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