CN116512969B - Ordered charging power regulation and control method, system, terminal and medium for alternating-current charging pile - Google Patents
Ordered charging power regulation and control method, system, terminal and medium for alternating-current charging pile Download PDFInfo
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/63—Monitoring or controlling charging stations in response to network capacity
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- 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
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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
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
-
- 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
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/50—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads
- H02J2310/56—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads characterised by the condition upon which the selective controlling is based
- H02J2310/58—The condition being electrical
- H02J2310/60—Limiting power consumption in the network or in one section of the network, e.g. load shedding or peak shaving
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- 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 application discloses a method, a system, a terminal and a medium for regulating and controlling orderly charging power of an alternating-current charging pile, which relate to the technical field of new energy automobile charging and have the technical scheme that: establishing a load ratio peak curve of which the load ratio peak coefficient changes in a daily cycle; establishing an enabling rate curve representing the opening and closing change of the charging pile in a daily cycle; calculating the rated load of the transformer in the transformer area by combining the real-time load data to obtain the maximum bearing load of all the charging piles in the corresponding regulation and control period; extracting the maximum starting rate in the corresponding regulation and control period from the starting rate curve, and calculating the maximum starting number by combining the total assembly number of the charging piles; and determining the charging constant power of each charging pile in the regulation and control period by starting the maximum starting number of the charging piles to reach the maximum bearing load, and regulating and controlling the PWM duty ratio in the CP signals output by the charging piles. The application is beneficial to the stable charging of the new energy automobile and also easy to prolong the service life of the charging equipment.
Description
Technical Field
The application relates to the technical field of new energy automobile charging, in particular to a method, a system, a terminal and a medium for regulating and controlling orderly charging power of an alternating-current charging pile.
Background
The random and impact characteristics of unordered charging of the new energy automobile are obvious, and great challenges are brought to the bearing capacity and safe, reliable and high-quality operation of the urban power distribution network. Most users' charging time is after coming home from work, and the peak value of the charging pile load is caused to highly coincide with the peak time of the traditional electric load, and the coincidence rate reaches 85%, so that the peak is overlapped, and therefore, the existing distribution network can not bear unordered charging demands of residential areas gradually under the development speed of the current electric automobile. Meanwhile, on the other hand, the load of the distribution network enters the valley between 12 and 6 am.
Therefore, in the prior art, it is described that the maximum output power of the running charging piles is adjusted according to the load condition of the transformer, the total output power of all the charging piles is determined mainly according to the difference between the rated load and the actual load of the transformer, and then the total output power is distributed to each charging pile, so as to realize the dynamic regulation and control of the maximum output power of the charging piles. However, due to the influence of the randomness of charging of the new energy automobile and the randomness of electricity consumption of residents, the maximum output power of a single charging pile at different moments has larger change, so that the power regulation frequency of the charging pile is higher, the stable charging of the new energy automobile is not facilitated, and the service life of charging equipment is also easily reduced.
Therefore, how to research and design a method, a system, a terminal and a medium for orderly charging power regulation of an alternating current charging pile, which can overcome the defects, is a problem which needs to be solved in the current state.
Disclosure of Invention
In order to solve the defects in the prior art, the application aims to provide a method, a system, a terminal and a medium for orderly charging power regulation of alternating-current charging piles, which can maximize the charging efficiency of a new energy automobile as much as possible by regulating and controlling the constant charging power of the charging piles in each regulation period under the condition that the sum of residential electricity load and all charging pile load is not more than the rated load of a transformer in a platform area in each regulation period, can realize the balance requirement on the regulation frequency and the charging efficiency of the charging power, is beneficial to the stable charging of the new energy automobile, and simultaneously is easy to prolong the service life of charging equipment.
The technical aim of the application is realized by the following technical scheme:
in a first aspect, a method for regulating and controlling orderly charging power of an alternating-current charging pile is provided, which comprises the following steps:
establishing a load ratio peak curve of which the load ratio peak coefficient changes in a daily cycle according to historical load data of residential electricity of a platform area, wherein the load ratio peak coefficient represents the ratio of residential electricity load to load peak value;
establishing an enabling rate curve representing the opening and closing change of the charging piles in a daily cycle according to the historical operation data of all the charging piles;
collecting real-time load data of residential electricity of a transformer in a transformer area in overload operation and/or every interval regulation period;
extracting an initial load ratio peak coefficient corresponding to the real-time load data and a maximum load ratio peak coefficient in a subsequent single regulation period from a load ratio peak curve, and calculating to obtain the maximum bearing load of all charging piles in the corresponding regulation period by combining the real-time load data and rated load of a transformer in a transformer area;
extracting the maximum starting rate in the corresponding regulation and control period from the starting rate curve, and calculating the maximum starting number by combining the total assembly number of the charging piles;
and determining the charging constant power of each charging pile in the regulation and control period by starting the maximum starting number of the charging piles to reach the maximum bearing load, and regulating and controlling the PWM duty ratio in the CP signal output by the charging piles according to the charging constant power.
Further, the establishment process of the load ratio peak curve specifically comprises the following steps:
selecting a corresponding load peak value from each piece of historical load data;
calculating the load ratio peak value of the corresponding historical load data at different moments according to the ratio of the resident power load at each moment in the historical load data to the corresponding load peak value;
the load ratio peak value of all the historical load data at the same moment is subjected to weight or average value calculation to obtain a load ratio peak coefficient at the corresponding moment;
and (3) carrying out linear fitting on the load ratio peak coefficients at all moments by adopting a least square method to obtain a load ratio peak curve.
Further, the establishment process of the enabling rate curve specifically includes:
counting the number average value of the charging piles in the starting running state at the same time in different daily cycles;
dividing the number average value by the total assembly number of the charging piles to obtain the starting rate at the corresponding moment;
and (3) performing linear fitting on the starting rates at all the moments by adopting a least square method to obtain a starting rate curve.
Further, the calculation formula of the maximum load is specifically:
；
wherein ,representing the rated load of the transformer in the transformer area; />Representing real-time load data; />Representing the regulatory period->A peak-to-peak ratio of the maximum load ratio within; />Representing an initial load ratio peak factor; />Representing the residual load of the transformer in the transformer area; />Indicating that all charging piles are in a regulating period +.>Maximum load-bearing capacity in the inner part; />Representing a lower limit value of charging power of a single charging pile; />Indicating the charging pile to be in a regulating period +.>The maximum number of activations within.
Further, the maximum number of activations is a product of the total number of assemblies and the maximum activation rate.
Further, the charge constant power is a ratio of a maximum load to a maximum number of activations.
Further, the PWM duty cycle in the CP signal is the ratio of the charge constant power to the charge rated power.
In a second aspect, an ordered charging power regulation system for an ac charging stake is provided, comprising:
the first curve module is used for establishing a load ratio peak curve of which the load ratio peak coefficient changes in a daily cycle according to historical load data of residential electricity of a platform area, and the load ratio peak coefficient represents the ratio of residential electricity load to load peak value;
the second curve module is used for establishing an enabling rate curve representing the opening and closing change of the charging piles in a daily cycle according to the historical operation data of all the charging piles;
the load acquisition module is used for acquiring real-time load data of residential electricity of the transformer in the transformer area in overload operation and/or every interval regulation period;
the load analysis module is used for extracting an initial load ratio peak coefficient corresponding to the real-time load data and a maximum load ratio peak coefficient in a subsequent single regulation period from the load ratio peak curve, and calculating the maximum load bearing load of all the charging piles in the corresponding regulation period by combining the real-time load data and rated load of the transformer in the transformer area;
the starting estimation module is used for extracting the maximum starting rate in the corresponding regulation and control period from the starting rate curve and calculating the maximum starting number by combining the total assembly number of the charging piles;
and the power regulation and control module is used for determining the charging constant power of each charging pile in a regulation and control period by starting and running the maximum starting number of the charging piles to reach the maximum bearing load, and regulating and controlling the PWM duty ratio in the CP signals output by the charging piles according to the charging constant power.
In a third aspect, a computer terminal is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the ordered charging power regulation method for ac charging piles according to any of the first aspects when executing the program.
In a fourth aspect, a computer readable medium is provided, on which a computer program is stored, the computer program being executed by a processor to implement the method for orderly charging power regulation of an ac charging pile according to any one of the first aspects.
Compared with the prior art, the application has the following beneficial effects:
1. according to the ordered charging power regulation and control method for the alternating-current charging piles, provided by the application, under the condition that the sum of the residential electricity load and all the charging pile loads does not exceed the rated load of the transformer in the transformer area in each regulation and control period, the maximization of the charging efficiency of the new energy automobile is realized as much as possible by regulating and controlling the constant charging power of the charging piles in each regulation and control period, and the balance requirement on the regulation and control frequency and the charging efficiency of the charging power can be realized by properly regulating and controlling the time width of the regulation and control period, so that the stable charging of the new energy automobile is facilitated, and the service life of charging equipment is also easily prolonged;
2. the application is suitable for the stage of continuously improving the real-time load data and the stage of continuously reducing the real-time load data, can cover the whole period of alternating peak and valley periods of power utilization of residents in a platform area, and has strong adaptability and flexibility.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:
FIG. 1 is a flow chart in embodiment 1 of the present application;
fig. 2 is a system block diagram in embodiment 2 of the present application.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present application, the present application will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present application and the descriptions thereof are for illustrating the present application only and are not to be construed as limiting the present application.
Example 1: the method for regulating and controlling the orderly charging power of the alternating-current charging pile is specifically realized by the following steps as shown in fig. 1.
Step one: and establishing a load ratio peak curve of which the load ratio peak coefficient changes in a daily cycle according to historical load data of residential electricity of the transformer area, wherein the load ratio peak coefficient represents the ratio of residential electricity load to load peak value.
The smaller the value of the data between the load ratio peak factor of 0 and 1, the greater the distance of the current load from the peak load.
The establishment process of the load ratio peak curve specifically comprises the following steps: selecting a corresponding load peak value from each piece of historical load data; calculating the load ratio peak value of the corresponding historical load data at different moments according to the ratio of the resident power load at each moment in the historical load data to the corresponding load peak value; the load ratio peak value of all the historical load data at the same moment is subjected to weight or average value calculation to obtain a load ratio peak coefficient at the corresponding moment; and (3) carrying out linear fitting on the load ratio peak coefficients at all moments by adopting a least square method to obtain a load ratio peak curve.
Step two: and establishing an enabling rate curve representing the opening and closing change of the charging piles in the daily cycle according to the historical operation data of all the charging piles.
Considering that the difference between the number of the charging piles required to be started by a user and the number of the charging piles required to be closed after the automobile is charged in a regulation and control period can influence the load of the transformer in the transformer area, the starting number of the charging piles at different times is very important for realizing accurate regulation and control of the charging power of a single charging pile.
In this embodiment, the establishment process of the enabling rate curve specifically includes: counting the number average value of the charging piles in the starting running state at the same time in different daily cycles; dividing the number average value by the total assembly number of the charging piles to obtain the starting rate at the corresponding moment; and (3) performing linear fitting on the starting rates at all the moments by adopting a least square method to obtain a starting rate curve.
Step three: and (3) collecting real-time load data of residential electricity of the transformer in the transformer area in overload operation and/or every interval regulation period.
The transformer in the transformer area is in overload operation, and each interval regulation period is used as a trigger condition for regulating and controlling the power of the charging pile, so that the transformer in the transformer area can adapt to the whole charging process. When the transformer in the transformer area is in overload operation and is used as a trigger condition at the same time in each interval regulation period, the first-occurring trigger condition should be responded preferentially.
For example, when the transformer in the transformer area just performs overload operation, the subsequent charging power regulation and control can be developed, and the stage is suitable for the stage of lifting the power consumption data of residents in the transformer area; if the transformer in the transformer area is not in overload operation in one regulation period, the power consumption of residents in the transformer area is stable or is in a reduced stage, so that the two trigger conditions can meet the power regulation of the whole period.
Step four: and extracting an initial load ratio peak coefficient corresponding to the real-time load data and a maximum load ratio peak coefficient in a subsequent single regulation period from the load ratio peak curve, and calculating the maximum load bearing load of all the charging piles in the corresponding regulation period by combining the real-time load data and rated load of the transformer in the transformer area.
In this embodiment, the calculation formula of the maximum load is specifically:
；
wherein ,representing the rated load of the transformer in the transformer area; />Representing real-time load data; />Representing the regulatory period->A peak-to-peak ratio of the maximum load ratio within; />Representing an initial load ratio peak factor; />Representing the residual load of the transformer in the transformer area; />Indicating that all charging piles are in a regulating period +.>Maximum load-bearing capacity in the inner part; />Representing a lower limit value of charging power of a single charging pile; />Indicating the charging pile to be in a regulating period +.>The maximum number of activations within.
Step five: and extracting the maximum starting rate in the corresponding regulation and control period from the starting rate curve, and calculating the maximum starting number by combining the total assembly number of the charging piles.
Wherein the maximum number of activations is the product of the total number of assemblies and the maximum activation rate.
Step six: and determining the charging constant power of each charging pile in the regulation and control period by starting the maximum starting number of the charging piles to reach the maximum bearing load, and regulating and controlling the PWM duty ratio in the CP signal output by the charging piles according to the charging constant power.
Wherein the charging constant power is the ratio of the maximum load to the maximum number of activations. And the PWM duty cycle in the CP signal is the ratio of the charge constant power to the charge rated power.
Example 2: the system for regulating and controlling the ordered charging power of the alternating-current charging pile is used for realizing the method for regulating and controlling the ordered charging power of the alternating-current charging pile, which is described in the embodiment 1, and comprises a first curve module, a second curve module, a load acquisition module, a load analysis module, an enabling estimation module and a power regulation module as shown in fig. 2.
The first curve module is used for establishing a load ratio peak curve of which the load ratio peak coefficient changes in a daily cycle according to historical load data of residential electricity of a platform region, and the load ratio peak coefficient represents the ratio of residential electricity load to load peak value; the second curve module is used for establishing an enabling rate curve representing the opening and closing change of the charging piles in a daily cycle according to the historical operation data of all the charging piles; the load acquisition module is used for acquiring real-time load data of residential electricity of the transformer in the transformer area in overload operation and/or every interval regulation period; the load analysis module is used for extracting an initial load ratio peak coefficient corresponding to the real-time load data and a maximum load ratio peak coefficient in a subsequent single regulation period from the load ratio peak curve, and calculating the maximum load bearing load of all the charging piles in the corresponding regulation period by combining the real-time load data and rated load of the transformer in the transformer area; the starting estimation module is used for extracting the maximum starting rate in the corresponding regulation and control period from the starting rate curve and calculating the maximum starting number by combining the total assembly number of the charging piles; and the power regulation and control module is used for determining the charging constant power of each charging pile in a regulation and control period by starting and running the maximum starting number of the charging piles to reach the maximum bearing load, and regulating and controlling the PWM duty ratio in the CP signals output by the charging piles according to the charging constant power.
Working principle: according to the application, the charging efficiency of the new energy automobile is maximized as much as possible by regulating and controlling the constant charging power of the charging piles in each regulation and control period under the condition that the sum of the residential electricity load and the load of all the charging piles is not more than the rated load of the transformer in the platform area in each regulation and control period, and the balance requirement on the regulation and control frequency and the charging efficiency of the charging power can be realized by properly regulating and controlling the time width of the regulation and control period, so that the stable charging of the new energy automobile is facilitated, and the service life of charging equipment is also easily prolonged.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing detailed description of the application has been presented for purposes of illustration and description, and it should be understood that the application is not limited to the particular embodiments disclosed, but is intended to cover all modifications, equivalents, alternatives, and improvements within the spirit and principles of the application.
Claims (9)
1. The method for regulating and controlling the orderly charging power of the alternating-current charging pile is characterized by comprising the following steps of:
establishing a load ratio peak curve of which the load ratio peak coefficient changes in a daily cycle according to historical load data of residential electricity of a platform area, wherein the load ratio peak coefficient represents the ratio of residential electricity load to load peak value;
establishing an enabling rate curve representing the opening and closing change of the charging piles in a daily cycle according to the historical operation data of all the charging piles;
collecting real-time load data of residential electricity of a transformer in a transformer area in overload operation and/or every interval regulation period;
extracting an initial load ratio peak coefficient corresponding to the real-time load data and a maximum load ratio peak coefficient in a subsequent single regulation period from a load ratio peak curve, and calculating to obtain the maximum bearing load of all charging piles in the corresponding regulation period by combining the real-time load data and rated load of a transformer in a transformer area;
extracting the maximum starting rate in the corresponding regulation and control period from the starting rate curve, and calculating the maximum starting number by combining the total assembly number of the charging piles;
determining the charging constant power of each charging pile in a regulation and control period by starting the maximum starting number of the charging piles to reach the maximum bearing load, and regulating and controlling the PWM duty ratio in the CP signals output by the charging piles according to the charging constant power;
the calculation formula of the maximum bearing load is specifically as follows:
；
wherein ,representing the rated load of the transformer in the transformer area; />Representing real-time load data; />Representing the regulatory period->A peak-to-peak ratio of the maximum load ratio within; />Representing an initial load ratio peak factor; />Representing the residual load of the transformer in the transformer area;indicating that all charging piles are in a regulating period +.>Maximum load-bearing capacity in the inner part; />Representing a lower limit value of charging power of a single charging pile; />Indicating the charging pile to be in a regulating period +.>The maximum number of activations within.
2. The method for orderly charging power regulation and control of an alternating-current charging pile according to claim 1, wherein the establishment process of the load ratio peak curve is specifically as follows:
selecting a corresponding load peak value from each piece of historical load data;
calculating the load ratio peak value of the corresponding historical load data at different moments according to the ratio of the resident power load at each moment in the historical load data to the corresponding load peak value;
the load ratio peak value of all the historical load data at the same moment is subjected to weight or average value calculation to obtain a load ratio peak coefficient at the corresponding moment;
and (3) carrying out linear fitting on the load ratio peak coefficients at all moments by adopting a least square method to obtain a load ratio peak curve.
3. The method for orderly charging power regulation and control of an alternating current charging pile according to claim 1, wherein the establishment process of the enabling rate curve is specifically as follows:
counting the number average value of the charging piles in the starting running state at the same time in different daily cycles;
dividing the number average value by the total assembly number of the charging piles to obtain the starting rate at the corresponding moment;
and (3) performing linear fitting on the starting rates at all the moments by adopting a least square method to obtain a starting rate curve.
4. The method of claim 1, wherein the maximum number of activations is a product of a total number of activations and a maximum activation rate.
5. The method of claim 1, wherein the charge constant power is a ratio of a maximum load to a maximum number of activations.
6. The method of claim 1, wherein the PWM duty cycle in the CP signal is a ratio of a constant charge power to a rated charge power.
7. Alternating-current charging stake orderly charging power regulation and control system, characterized by includes:
the first curve module is used for establishing a load ratio peak curve of which the load ratio peak coefficient changes in a daily cycle according to historical load data of residential electricity of a platform area, and the load ratio peak coefficient represents the ratio of residential electricity load to load peak value;
the second curve module is used for establishing an enabling rate curve representing the opening and closing change of the charging piles in a daily cycle according to the historical operation data of all the charging piles;
the load acquisition module is used for acquiring real-time load data of residential electricity of the transformer in the transformer area in overload operation and/or every interval regulation period;
the load analysis module is used for extracting an initial load ratio peak coefficient corresponding to the real-time load data and a maximum load ratio peak coefficient in a subsequent single regulation period from the load ratio peak curve, and calculating the maximum load bearing load of all the charging piles in the corresponding regulation period by combining the real-time load data and rated load of the transformer in the transformer area;
the starting estimation module is used for extracting the maximum starting rate in the corresponding regulation and control period from the starting rate curve and calculating the maximum starting number by combining the total assembly number of the charging piles;
the power regulation and control module is used for determining the charging constant power of each charging pile in a regulation and control period by starting and running the charging piles with the maximum starting quantity to reach the maximum bearing load, and regulating and controlling the PWM duty ratio in the CP signals output by the charging piles according to the charging constant power;
the calculation formula of the maximum bearing load is specifically as follows:
；
wherein ,representing the rated load of the transformer in the transformer area; />Representing real-time load data; />Representing the regulatory period->A peak-to-peak ratio of the maximum load ratio within; />Representing an initial load ratio peak factor; />Representing the residual load of the transformer in the transformer area;indicating that all charging piles are in a regulating period +.>Maximum load-bearing capacity in the inner part; />Representing a lower limit value of charging power of a single charging pile; />Indicating the charging pile to be in a regulating period +.>The maximum number of activations within.
8. A computer terminal comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the method for regulating and controlling the orderly charging power of an ac charging pile according to any one of claims 1 to 6 when executing the program.
9. A computer readable medium having a computer program stored thereon, wherein the computer program is executed by a processor to implement the method for orderly charging power regulation of an ac charging pile according to any one of claims 1 to 6.
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