CN117239769B - Charging station power grid voltage regulation modeling system and method - Google Patents
Charging station power grid voltage regulation modeling system and method Download PDFInfo
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- CN117239769B CN117239769B CN202311508300.6A CN202311508300A CN117239769B CN 117239769 B CN117239769 B CN 117239769B CN 202311508300 A CN202311508300 A CN 202311508300A CN 117239769 B CN117239769 B CN 117239769B
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- 238000004146 energy storage Methods 0.000 claims abstract description 71
- 230000005611 electricity Effects 0.000 claims abstract description 37
- 238000012545 processing Methods 0.000 claims abstract description 18
- 238000004140 cleaning Methods 0.000 claims description 17
- 238000004364 calculation method Methods 0.000 claims description 13
- 238000013507 mapping Methods 0.000 claims description 10
- 238000012937 correction Methods 0.000 claims description 8
- 238000012795 verification Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 10
- 238000005070 sampling Methods 0.000 description 2
- 238000013500 data storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
Abstract
The invention relates to the technical field of electric voltage regulation, in particular to a charging station power grid voltage regulation modeling system and method, which are characterized in that the condition of an existing energy storage unit of a charging station is counted through an energy storage information acquisition module, a plurality of energy storage units are used for supplying power in parallel in general, power grid information is obtained through a power grid information acquisition module, a data processing module cleans acquired data so as to facilitate subsequent use, a charging model of a charging end is established according to historical data through a charging model so as to predict future charging conditions, a voltage regulation model generation module adjusts the power supply condition based on the condition of the charging model, and particularly, whether the current residual electric quantity supports the current subsequent charging or not and whether the charging is carried out by adopting a power grid or not is carried out based on the necessity of electricity price, so that the power supply voltage of the energy storage unit and the power grid is adjusted through a voltage regulation control module, the charging is carried out at the lowest electricity consumption cost, and the running efficiency of the charging station is improved.
Description
Technical Field
The invention relates to the technical field of electric voltage regulation, in particular to a charging station power grid voltage regulation modeling system and method.
Background
The popularity of electric vehicles is an important means of addressing energy and environmental crisis, and is even considered as the only long-term solution for future traffic. The electric automobile charging load modeling relates to a plurality of factors such as charging characteristics of a power battery, vehicle behavior of a user, a charging mode, a charger structure and the like.
Existing electric vehicles are typically charged at a public charging station, which is typically configured with several tens to hundreds of charging posts to respectively power different electric vehicles. The power supply of the public charging station mainly comes from a self-contained storage battery and a power grid, but excessive power grid power cannot be taken at one time, so that power grid equipment is easy to damage.
The existing charging station cannot adjust the power supply voltage according to the running condition of the charging equipment, so that the energy use efficiency is reduced.
Disclosure of Invention
The invention aims to provide a charging station power grid voltage regulation modeling system and a charging station power grid voltage regulation modeling method, which aim to charge at the lowest possible electricity consumption cost under the condition of ensuring that power supply pressure is not caused, so as to improve the running efficiency of a charging station.
In order to achieve the above object, in a first aspect, the present invention provides a charging station power grid voltage regulation modeling system, which includes an energy storage information acquisition module, a power grid information acquisition module, a dynamic acquisition module, a data processing module, a charging model generation module, a voltage regulation model generation module and a voltage regulation control module; the energy storage information acquisition module, the power grid information acquisition module, the dynamic acquisition module, the data processing module, the charging model generation module, the voltage regulation model generation module and the voltage regulation control module are sequentially connected;
the energy storage information acquisition module is used for acquiring energy storage information of an energy storage group, wherein the energy storage information comprises residual electric quantity and electric power;
the power grid information acquisition module is used for acquiring power grid information, wherein the power grid information comprises load rate and electricity price parameters;
the dynamic acquisition module is used for: the charging system comprises a charging station power grid, a power supply system and a power supply system, wherein the charging station power grid is used for collecting charging data of the charging station power grid;
the data processing module is used for cleaning and storing energy storage information, power grid information and charging data;
the charging model generation module is used for generating a charging model based on charging data;
the voltage regulation model generation module is used for generating a voltage regulation model based on the charging model, the residual electric quantity and the electricity price parameter;
the voltage regulation control module is used for realizing voltage regulation control of the charging station power grid according to the established voltage regulation model.
The charging station power grid voltage regulation modeling system further comprises a model verification module, wherein the model verification module is used for verifying stability of the voltage regulation model based on historical data.
The energy storage information acquisition module comprises a numbering unit, a first acquisition unit and a mapping unit, wherein the numbering unit, the first acquisition unit and the mapping unit are sequentially connected;
the numbering unit is used for numbering the energy storage unit;
the first acquisition unit is used for acquiring energy storage information of each energy storage unit;
the mapping unit is used for corresponding the numbered energy storage information.
The power grid information acquisition module comprises a power price acquisition unit and a power grid load acquisition unit, wherein the power price acquisition unit is used for acquiring real-time power price parameters based on working time and a power price meter;
the power grid load acquisition unit is used for acquiring power grid operation load rate data.
Wherein the charging data includes voltage, current, and power.
Wherein the data processing module comprises a reading unit, a cleaning unit and a storage unit, the reading unit, the cleaning unit and the storage unit are connected in sequence,
the reading unit is used for reading the energy storage information, the power grid information and the charging data to obtain electricity utilization data;
the cleaning unit is used for cleaning invalid data in the electricity consumption data;
and the storage unit is used for storing the cleaned electricity consumption data.
The charging model generation module comprises a data acquisition unit, a first calculation unit, a power characteristic calculation unit and a correction unit, wherein the data acquisition unit, the first calculation unit, the power characteristic calculation unit and the correction unit are sequentially connected;
the data acquisition unit is used for acquiring historical charging data;
the first calculation unit is used for calculating median charging data based on historical charging data;
the power characteristic calculating unit is used for calculating power characteristics based on historical charging data;
the correction unit is used for correcting the power characteristics based on the median charging data to generate a charging model.
The specific step of calculating the median charging data based on the historical charging data comprises the following steps: removing two extreme values in the historical charging data based on normal distribution to obtain first data; and calculating the median charging data based on the first data.
In a second aspect, the invention further provides a charging station power grid voltage regulation modeling method, which comprises the following steps: collecting energy storage information of an energy storage group, wherein the energy storage information comprises residual electric quantity and electric power;
acquiring power grid information, wherein the power grid information comprises load rate and electricity price parameters;
collecting charging data of a charging station power grid;
cleaning and storing energy storage information, power grid information and charging data;
generating a charging model based on the charging data;
generating a voltage regulation model based on the charging model, the residual electric quantity and the electricity price parameter;
and according to the established voltage regulation model, realizing voltage regulation control of the charging station power grid.
According to the charging station power grid voltage regulation modeling system and method, the situation of the existing energy storage units of the charging station can be counted through the energy storage information acquisition module, the charging station is provided with a plurality of energy storage units which can supply power in parallel generally, so that the situation of residual electric quantity and power consumption in the process of using electricity can be obtained, then the power grid information can be obtained through the power grid information acquisition module, because the power consumption of the charging station is generally large, if the power consumption of the charging station is used with a surrounding power consumption main body at the same time, the great power supply pressure can be caused, the current load rate of the power grid information can be obtained, the current electricity price can be used for conveniently adopting the power grid for charging or supplying electricity according to the situation, the data processing module can clean the acquired data so as to be convenient for the subsequent use, then a charging model of a charging end can be established according to historical data through the charging model, the power supply situation of the future charging situation can be predicted, then the power supply situation can be adjusted through the voltage regulation model generation module based on the situation of the charging model, particularly, the current charging can be carried out according to whether the current charging can be carried out in the process of the residual electric quantity, and the current charging situation is necessary, and the current charging can be carried out according to whether the power consumption is carried out by adopting the power consumption of the power consumption main body at the power consumption of the charging station or not.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the 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 block diagram of a charging station grid voltage regulation modeling system according to a first embodiment of the present invention.
Fig. 2 is a block diagram of an energy storage information collection module according to a second embodiment of the present invention.
Fig. 3 is a block diagram of a grid information acquisition module according to a second embodiment of the present invention.
Fig. 4 is a block diagram of a data processing module of a second embodiment of the present invention.
Fig. 5 is a block diagram of a charge model generation module of a second embodiment of the present invention.
Fig. 6 is a flowchart of a charging station grid voltage regulation modeling method according to a third embodiment of the present invention.
The system comprises an energy storage information acquisition module 101, a power grid information acquisition module 102, a dynamic acquisition module 103, a data processing module 104, a charging model generation module 105, a voltage regulation model generation module 106, a voltage regulation control module 107, a model verification module 108, a numbering unit 201, a first acquisition unit 202, a mapping unit 203, an electricity price acquisition unit 204, a power grid load acquisition unit 205, a reading unit 206, a cleaning unit 207, a storage unit 208, a data acquisition unit 209, a first calculation unit 210, a power characteristic calculation unit 211 and a correction unit 212.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
First embodiment
Referring to fig. 1, fig. 1 is a block diagram of a charging station grid voltage regulation modeling system according to a first embodiment of the present invention.
The invention provides a charging station power grid voltage regulation modeling system, which comprises an energy storage information acquisition module 101, a power grid information acquisition module 102, a dynamic acquisition module 103, a data processing module 104, a charging model generation module 105, a voltage regulation model generation module 106 and a voltage regulation control module 107; the energy storage information acquisition module 101, the power grid information acquisition module 102, the dynamic acquisition module 103, the data processing module 104, the charging model generation module 105, the voltage regulation model generation module 106 and the voltage regulation control module 107 are sequentially connected; the energy storage information acquisition module 101 is configured to acquire energy storage information of an energy storage group, where the energy storage information includes a remaining power and a power consumption; the power grid information acquisition module 102 is configured to acquire power grid information, where the power grid information includes a load rate and an electricity price parameter; the dynamic acquisition module 103: the charging system comprises a charging station power grid, a power supply system and a power supply system, wherein the charging station power grid is used for collecting charging data of the charging station power grid; the data processing module 104 is configured to clean and store energy storage information, grid information and charging data, and the charging model generating module 105 is configured to generate a charging model based on the charging data; the voltage regulation model generation module 106 is configured to generate a voltage regulation model based on the charging model, the remaining power and the electricity price parameter; the voltage regulation control module 107 is configured to implement voltage regulation control on the charging station power grid according to the established voltage regulation model.
The charging station power grid voltage regulation modeling system further comprises a model verification module 108, wherein the model verification module 108 is used for verifying stability of a voltage regulation model based on historical data.
In this embodiment, the situation of the existing energy storage units of the charging station may be counted by the energy storage information acquisition module 101, in general, the charging station may have a plurality of energy storage units and may supply power in parallel, so that the situation related to the remaining electric quantity and the electric power used during electricity consumption may be obtained, then the electric network information may be obtained by the electric network information acquisition module 102, since the electric power used by the charging station is generally larger, if the electric power used by the surrounding electric body is used at the same time, a great power supply pressure may be caused, so that the current load rate of the electric network information may be required, and the current electricity price may be convenient for charging or supplying power by using the electric network according to the situation, the data processing module 104 may clean the acquired data so as to facilitate the subsequent use, then by using the charging model may establish a charging model of the charging end according to the historical data, so as to predict the future charging situation, and then by using the voltage regulation model generation module 106 may adjust the power supply situation based on the situation of the charging model, in particular, whether the remaining electric quantity may be supported for the subsequent charging, and whether the electric network charging needs to be used for the current charging may be necessary, so that the electric network charging may be performed according to the situation may not be required, and the electric network charging efficiency may be adjusted, so that the electric network charging efficiency may be guaranteed, and the cost may not be increased.
Second embodiment
Referring to fig. 2 to 5, fig. 2 is a block diagram of an energy storage information acquisition module according to a second embodiment of the present invention. Fig. 3 is a block diagram of a grid information acquisition module according to a second embodiment of the present invention. Fig. 4 is a block diagram of a data processing module of a second embodiment of the present invention. Fig. 5 is a block diagram of a charge model generation module of a second embodiment of the present invention. On the basis of the first embodiment, the invention also provides a charging station power grid voltage regulation modeling system, wherein the energy storage information acquisition module 101 comprises a numbering unit 201, a first acquisition unit 202 and a mapping unit 203, and the numbering unit 201, the first acquisition unit 202 and the mapping unit 203 are sequentially connected; the numbering unit 201 is configured to number the energy storage unit; the first collecting unit 202 is configured to collect energy storage information of each energy storage unit; the mapping unit 203 is configured to correspond the numbered stored energy information. Through the mode, the data of each energy storage unit can be conveniently and orderly stored, and subsequent control is facilitated.
In this embodiment, the power grid information acquisition module 102 includes a power grid load acquisition unit 205 and a power grid price acquisition unit 204, where the power grid information acquisition unit 204 is configured to acquire real-time power grid parameters based on working time and a power grid meter; the power grid load obtaining unit 205 is configured to obtain power grid operation load rate data. The electricity price meter can calculate according to the electricity price published by authorities, then the running load rate of the power grid can be estimated according to the regional electricity consumption condition, and a smaller fixed value can be adopted under the condition of lack of data.
The charging data includes voltage, current, and power.
The data processing module 104 includes a reading unit 206, a cleaning unit 207 and a storage unit 208, where the reading unit 206, the cleaning unit 207 and the storage unit 208 are sequentially connected, and the reading unit 206 is configured to read energy storage information, power grid information and charging data to obtain electricity consumption data; the cleaning unit 207 is configured to clean invalid data in the electricity consumption data; the storage unit 208 is configured to store the cleaned electricity data. The data can be conveniently processed and stored in the mode, so that the data storage device is more convenient to use.
The charging model generating module comprises a data obtaining unit 209, a first calculating unit 210, a power characteristic calculating unit 211 and a correcting unit 212, wherein the data obtaining unit 209, the first calculating unit 210, the power characteristic calculating unit 211 and the correcting unit 212 are sequentially connected; the data acquisition unit 209 is configured to acquire historical charging data; the first calculating unit 210 is configured to calculate median charging data based on the historical charging data; the power characteristic calculation unit 211 is used for calculating a power characteristic based on historical charging data; the correction unit 212 is configured to correct the power characteristic based on the median charging data, and generate a charging model.
The specific steps for calculating the median charging data based on the historical charging data comprise: removing two extreme values in the historical charging data based on normal distribution to obtain first data; and calculating the median charging data based on the first data. The values with smaller frequency of occurrence in the data are processed by adopting a normal distribution theory, then the first data can be obtained, and the median data is calculated to represent the total power consumption of the current day.
The specific steps for calculating the power characteristics based on the historical charging data comprise: acquiring charging data of the same day every week; fitting the charging data of the same day to obtain a fitting curve; and sampling the fitting curve to obtain the power characteristic. The power characteristics are obtained by sampling the fitting curve, so that the electric power of the corresponding future days can be predicted.
The specific steps of correcting the power characteristics based on the median charging data and generating the charging model comprise the following steps: integrating the power characteristics to obtain predicted charging data; acquiring the ratio of the predicted charging data to the median charging data; the power characteristics are modified based on the ratio. By adopting the mode, the total electric quantity data can be adopted to correct the power characteristics, so that the accuracy can be further improved.
The step of generating the voltage regulation model based on the charging model, the residual electric quantity and the electricity price parameter comprises the following steps: if the residual electric quantity does not meet the requirement of the charging model, the power grid is connected to supply power; predicting the power grid load based on the charging model, the residual electric quantity and the power grid load rate at each preset interval; if the load of the power grid exceeds the given load of the power grid at a certain moment, the power supply voltage of the energy storage unit is reduced, the power grid is controlled at the current moment to supply power to the energy storage unit and the load at the same time, and if the load of the power grid does not exceed the given load, the power supply voltage of the energy storage power supply is increased, and the power supply of the power grid is disconnected. Through the mode, the relation between the power supply of the local energy storage unit and the power supply of the power grid can be coordinated better, so that the electricity consumption cost can be reduced as much as possible under the condition that the system operates normally.
Third embodiment
Referring to fig. 6, fig. 6 is a flowchart of a charging station grid voltage regulation modeling method according to a third embodiment of the present invention. On the basis of the first embodiment, the invention also provides a charging station power grid voltage regulation modeling method, which comprises the following steps:
s101, collecting energy storage information of an energy storage group, wherein the energy storage information comprises residual electric quantity and electric power;
s102, acquiring power grid information, wherein the power grid information comprises load rate and electricity price parameters;
s103, collecting charging data of a charging station power grid;
s104, cleaning and storing energy storage information, power grid information and charging data;
s105, generating a charging model based on the charging data;
s106, generating a voltage regulation model based on the charging model, the residual electric quantity and the electricity price parameter;
and S107, realizing voltage regulation control of the charging station power grid according to the established voltage regulation model.
By the method, the charging can be performed at the lowest electricity cost under the condition of ensuring that the power supply pressure is not caused, so that the operation efficiency of the charging station is improved.
The above disclosure is only a preferred embodiment of the present invention, and it should be understood that the scope of the invention is not limited thereto, and those skilled in the art will appreciate that all or part of the procedures described above can be performed according to the equivalent changes of the claims, and still fall within the scope of the present invention.
Claims (7)
1. A charging station power grid voltage regulation modeling system is characterized in that,
the system comprises an energy storage information acquisition module, a power grid information acquisition module, a dynamic acquisition module, a data processing module, a charging model generation module, a voltage regulation model generation module and a voltage regulation control module; the energy storage information acquisition module, the power grid information acquisition module, the dynamic acquisition module, the data processing module, the charging model generation module, the voltage regulation model generation module and the voltage regulation control module are sequentially connected;
the energy storage information acquisition module is used for acquiring energy storage information of an energy storage group, wherein the energy storage information comprises residual electric quantity and electric power;
the power grid information acquisition module is used for acquiring power grid information, wherein the power grid information comprises load rate and electricity price parameters;
the dynamic acquisition module is used for: the charging system comprises a charging station power grid, a power supply system and a power supply system, wherein the charging station power grid is used for collecting charging data of the charging station power grid;
the data processing module is used for cleaning and storing energy storage information, power grid information and charging data
The charging model generation module is used for generating a charging model based on charging data;
the voltage regulation model generation module is used for generating a voltage regulation model based on the charging model, the residual electric quantity and the electricity price parameter;
the step of generating the voltage regulation model based on the charging model, the residual electric quantity and the electricity price parameter comprises the following steps: if the residual electric quantity does not meet the requirement of the charging model, the power grid is connected to supply power; predicting the power grid load based on the charging model, the residual electric quantity and the power grid load rate at each preset interval; if the load of the power grid exceeds the given load of the power grid at a certain moment, the power supply voltage of the energy storage unit is reduced, the power grid is controlled to supply power to the energy storage unit and the load at the current moment, and if the load of the power grid does not exceed the given load of the power grid, the power supply voltage of the energy storage power supply is increased, and the power supply of the power grid is disconnected;
the energy storage information acquisition module comprises a numbering unit, a first acquisition unit and a mapping unit, wherein the numbering unit, the first acquisition unit and the mapping unit are sequentially connected;
the numbering unit is used for numbering the energy storage unit;
the first acquisition unit is used for acquiring energy storage information of each energy storage unit;
the mapping unit is used for corresponding the numbered energy storage information, the power grid information acquisition module comprises a power price acquisition unit and a power grid load acquisition unit, and the power price acquisition unit is used for acquiring real-time power price parameters based on working time and a power price meter;
the power grid load acquisition unit is used for acquiring power grid operation load rate data.
2. A charging station grid voltage regulation modeling system as defined in claim 1, wherein,
the charging station power grid voltage regulation modeling system further comprises a model verification module, wherein the model verification module is used for verifying stability of the voltage regulation model based on historical data.
3. A charging station grid voltage regulation modeling system as defined in claim 1, wherein,
the charging data includes voltage, current, and power.
4. A charging station grid voltage regulation modeling system as defined in claim 1, wherein,
the data processing module comprises a reading unit, a cleaning unit and a storage unit, wherein the reading unit, the cleaning unit and the storage unit are sequentially connected,
the reading unit is used for reading the energy storage information, the power grid information and the charging data to obtain electricity utilization data;
the cleaning unit is used for cleaning invalid data in the electricity consumption data;
and the storage unit is used for storing the cleaned electricity consumption data.
5. A charging station grid voltage regulation modeling system as defined in claim 4 wherein,
the charging model generation module comprises a data acquisition unit, a first calculation unit, a power characteristic calculation unit and a correction unit, wherein the data acquisition unit, the first calculation unit, the power characteristic calculation unit and the correction unit are connected in sequence;
the data acquisition unit is used for acquiring historical charging data;
the first calculation unit is used for calculating median charging data based on historical charging data;
the power characteristic calculating unit is used for calculating power characteristics based on historical charging data;
the correction unit is used for correcting the power characteristics based on the median charging data to generate a charging model.
6. A charging station grid voltage regulation modeling system as defined in claim 5, wherein,
the specific steps for calculating the median charging data based on the historical charging data comprise: removing two extreme values in the historical charging data based on normal distribution to obtain first data; and calculating the median charging data based on the first data.
7. A charging station power grid voltage regulation modeling method is applied to the charging station power grid voltage regulation modeling system of any one of claims 1 to 6, and is characterized in that,
comprising the following steps: collecting energy storage information of an energy storage group, wherein the energy storage information comprises residual electric quantity and electric power;
acquiring power grid information, wherein the power grid information comprises load rate and electricity price parameters;
collecting charging data of a charging station power grid;
cleaning and storing energy storage information, power grid information and charging data
Generating a charging model based on charging data
Generating a voltage regulation model based on the charging model, the residual electric quantity and the electricity price parameter;
and according to the established voltage regulation model, realizing voltage regulation control of the charging station power grid.
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