Energy coordination control method based on V2G electric energy coverage area dynamic division

Abstract

The invention relates to the technical field of power supply coordination control, in particular to an energy coordination control method based on dynamic division of a V2G electric energy coverage area, and the method comprises the steps: obtaining vehicle access registration information of each parking lot with deployed V2G; according to the vehicle access registration information of each parking lot, determining the theoretical total power supply amount of each parking lot in the current sub-time period; determining an initial coverage radius of each parking lot according to the theoretical total power supply amount; determining a core coverage radius of each target electricity utilization place corresponding to each parking lot through the initial coverage radius; determining a V2G electric energy coverage area of each parking lot in the current sub-period in combination with the initial coverage radius and the core coverage radius; and performing energy coordination control based on the V2G and non-V2G electric energy coverage areas. According to the invention, the V2G and non-V2G electric energy coverage areas are distinguished in real time in a self-adaptive manner, so that the utilization rate of electric power resources is improved, and reliable energy coordination control is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply coordination control, and in particular to an energy coordination control method based on dynamic division of V2G power coverage areas. Background Art

[0002] With the rapid development of renewable energy, traditional centralized energy supply systems are gradually transitioning to distributed energy systems. This transition brings greater flexibility to power systems, but also presents new challenges, such as energy volatility and supply-demand imbalances. To efficiently manage energy flows between multiple energy sources, loads, and energy storage devices, ensuring power system stability and optimizing energy use, multi-port energy routers have been proposed. Multi-port energy routers can coordinate energy flows between multiple energy sources and have been widely used in smart microgrids, vehicle-to-grid (V2G) networks, and industrial energy management.

[0003] In the coordinated control of power systems using multi-port energy routers, although existing solutions integrate multiple energy sources and achieve dynamic allocation of regional loads, they still suffer from insufficient energy utilization efficiency, especially insufficient utilization of V2G electricity. Compared with other renewable energy sources, V2G electricity has significant advantages: its supply is less affected by seasonality and regional factors, and it mainly comes from large parking lots in high-load areas of cities, which has a natural locational match with electricity demand. However, when allocating V2G electricity, the current system fails to fully consider the geographical proximity between power sources and load centers, resulting in spatial mismatches in power distribution. This prevents V2G electricity from efficiently serving nearby high-load areas, not only reducing energy utilization efficiency but also affecting the overall operational performance of the power grid, ultimately restricting the coordinated control effect of multi-port energy routers. Summary of the Invention

[0004] To address the technical problem that existing coordinated control fails to fully utilize the geographical proximity advantage of V2G power, resulting in a mismatch between supply and demand in high-load areas, the present invention aims to provide an energy coordinated control method based on dynamic partitioning of V2G power coverage areas. The technical solutions employed are as follows: An embodiment of the present invention provides an energy coordination control method based on dynamic division of V2G power coverage areas, the method comprising the following steps: Obtain vehicle entry and exit registration information for each user vehicle in a current preset time period at several parking lots in the city where V2G has been deployed; the current preset time period is divided into several sub-time periods; Analyze user vehicle usage habits based on the vehicle entry and exit registration information for each parking lot to determine the theoretical total power supply for each parking lot in the current sub-period; determine the initial coverage radius of each parking lot based on the theoretical total power supply; analyze the power supply participation of fixed users in the parking lot using the initial coverage radius to determine the core coverage radius of each target power consumption site corresponding to each parking lot; and determine the V2G power coverage area of ​​each parking lot in the current sub-period by combining the initial coverage radius of each parking lot and the core coverage radius of each target power consumption site. Based on the V2G power coverage area and the non-V2G power coverage area in the city, a multi-port energy router is used to perform energy coordination control.

[0005] Furthermore, analyzing user vehicle usage habits based on the vehicle entry and exit registration information of each parking lot to determine the theoretical total power supply of each parking lot in the current sub-period includes: For any parking lot, the theoretical power supply contribution of the parking lot in the current sub-period is determined based on the vehicle entry and exit registration information of each user vehicle in the parking lot; the vehicle entry and exit registration information includes the parking time in the current preset period, the number of entries and exits in each sub-period, and the arrival time; Obtain the theoretical power supply contribution of the parking lot in the previous sub-period and the actual total V2G power supply; The theoretical total power supply of the parking lot in the current sub-period is determined according to the theoretical power supply contribution of the parking lot in the current sub-period, the theoretical power supply contribution of the previous sub-period, and the actual total V2G power supply.

[0006] Furthermore, determining the theoretical power supply contribution of the parking lot in the current sub-period based on the vehicle entry and exit registration information of each user vehicle in the parking lot includes: For each user vehicle in the parking lot, the power supply contribution of the user vehicle is determined based on the number of entries and exits of the user vehicle in each sub-period and the parking time in the current preset period; Constructing a theoretical arrival time period for each user vehicle based on the arrival time of each user vehicle in each sub-period, and selecting user vehicles whose arrival time in the current sub-period corresponds to the theoretical arrival time period as theoretical user vehicles; The first accumulated value of the power supply contribution of all theoretical user vehicles in the current sub-period is used as the theoretical power supply contribution of the parking lot in the current sub-period.

[0007] Furthermore, determining the power supply contribution of the user vehicle according to the number of entries and exits of the user vehicle in each sub-period and the parking time in the current preset period includes: Obtaining the relative power load for each sub-period, and determining the contribution of the user's vehicle to the sub-power supply in each sub-period based on the number of vehicle entries and exits and the relative power load in each sub-period; the relative power load represents the total power consumption of power consumption sites in the parking lot's immediate vicinity; The power supply contribution of the user vehicle is determined based on the second accumulated value of the sub-power supply contribution of the user vehicle in each sub-period, combined with the parking time in the current preset time period; the second accumulated value and the parking time are both positively correlated with the power supply contribution.

[0008] Furthermore, determining the sub-power supply contribution of the user vehicle in each sub-period based on the number of entries and exits of the user vehicle in each sub-period and the relative load of electricity consumption includes: Calculate the first product of the number of times the user's vehicle enters and exits in the same sub-period and the relative load of electricity consumption; A negative correlation normalization process is performed on the first product to obtain a first normalized value, and the first normalized value is used as the sub-power supply contribution of the user vehicle in the corresponding sub-time period.

[0009] Furthermore, determining the theoretical total power supply of the parking lot in the current sub-period based on the theoretical power supply contribution of the parking lot in the current sub-period, the theoretical power supply contribution of the previous sub-period, and the actual total V2G power supply includes: Calculate a first ratio of the theoretical power supply contribution of the parking lot in the current sub-period to the theoretical power supply contribution in the previous sub-period, and take the second product of the first ratio and the actual total V2G power supply in the previous sub-period as the theoretical total power supply of the parking lot in the current sub-period.

[0010] Furthermore, determining the initial coverage radius of each parking lot according to the theoretical total power supply includes: For any parking lot, the preset radius is gradually expanded outward with the parking lot as the center according to the preset step size to obtain several power supply coverage areas with a to-be-determined radius; Obtain the total first electricity consumption of all electricity users in the power supply coverage area of ​​each to-be-determined radius in the current sub-period, and the total second electricity consumption of all electricity users in the power supply coverage area of ​​each to-be-determined radius in several historical sub-periods corresponding to the current sub-period; the historical sub-periods have the same day of the week as the current sub-period; For each power supply coverage area with a to-be-determined radius, determining a second ratio according to a comparison result of the first total power consumption and an average of the second total power consumption corresponding to the power supply coverage area with the to-be-determined radius; Setting a comparison threshold, and determining an estimated power consumption of each power supply coverage area with a to-be-determined radius based on a comparison result of each second ratio with the comparison threshold; The initial coverage radius of the parking lot is determined based on the estimated power consumption and theoretical total power supply of each power supply coverage area with a to-be-determined radius.

[0011] Furthermore, the determining the second ratio according to a comparison result of the first total power consumption and an average of the second total power consumption corresponding to the power supply coverage area of ​​the to-be-determined radius includes: When the first total electricity consumption is less than the average of the second total electricity consumption, the ratio of the first total electricity consumption to the average of the second total electricity consumption is used as the second ratio; When the first total electricity consumption is greater than the average of the second total electricity consumption, the ratio of the average of the second total electricity consumption to the first total electricity consumption is used as the second ratio.

[0012] Furthermore, determining the estimated power consumption of each power supply coverage area with a to-be-determined radius according to the comparison result of each second ratio with the comparison threshold includes: When the second ratio is greater than or equal to the comparison threshold, the maximum value of the first total electricity consumption and the second total electricity consumption is used as the estimated power consumption of the power supply coverage area corresponding to the to-be-determined radius; otherwise, the average value of the first total electricity consumption and the second total electricity consumption is used as the estimated power consumption of the power supply coverage area corresponding to the to-be-determined radius.

[0013] Furthermore, determining the initial coverage radius of the parking lot based on the estimated power consumption and the theoretical total power supply of each power supply coverage area with a to-be-determined radius includes: From all the undetermined radii, a undetermined radius whose estimated power consumption is less than the theoretical total power supply is selected as the target radius; Calculate the difference between the theoretical total power supply and the estimated power consumption of the power supply coverage area of ​​each target radius, and use the target radius corresponding to the minimum difference as the initial coverage radius of the parking lot.

[0014] Furthermore, the analysis of the power supply participation of fixed users in the parking lot through the initial coverage radius to determine the core coverage radius of each target power consumption location corresponding to each parking lot includes: For any parking lot, obtain the workplaces of users with theoretical user vehicles within the initial power supply coverage area centered on the parking lot, record them as target power consumption sites, and then count the number of theoretical users in all target power consumption sites; A second normalized value obtained by normalizing the theoretical number of users, and using the second normalized value as a V2G participation contribution to the applied electric field; The core coverage radius of each target power consumption site corresponding to the parking lot is determined according to the V2G participation contribution and the initial coverage radius of each power consumption site.

[0015] Furthermore, the method of combining the initial coverage radius of each parking lot and the core coverage radius of each target power consumption site to determine the V2G power coverage area of ​​each parking lot in the current sub-period includes: For any parking lot, obtain the initial power supply coverage area of ​​the parking lot and the power coverage areas of each corresponding target power consumption site. The radius of the initial power supply coverage area is the initial coverage radius, and the radius of the power coverage area is the core coverage radius. The union area of ​​the power coverage areas of the target power consumption sites corresponding to the parking lot is determined, and the intersection area of ​​the union area and the initial power supply coverage area of ​​the parking lot is used as the V2G power coverage area of ​​the parking lot.

[0016] Furthermore, obtaining the priority order of different power generation modes corresponding to the non-V2G power coverage area includes: Obtain the historical power generation and historical annual power generation of several power generation methods in each historical preset time period; Determining the power production capacity performance of each power generation mode in each historical preset time period based on the power generation of each historical time period and the historical annual power generation of each power generation mode; For each historical preset period, the power production capacity performance of each power generation mode in the historical preset period is arranged in descending order as the priority selection order of different power generation modes corresponding to the non-V2G power coverage area in the historical preset period.

[0017] Furthermore, determining the power production capacity performance of each power generation mode in each historical preset time period based on the power generation in each historical time period and the historical annual power generation of each power generation mode includes: For any power generation mode, determining the power generation capacity of the power generation mode in each of the historical preset time periods based on the power generation of each of the historical time periods and the historical annual power generation of the power generation mode; Determining the dominant utilization of the power generation mode based on the historical annual power generation of the power generation mode and the historical annual power generation of all power generation modes; The power generation capacity performance of the power generation mode in each historical preset time period is determined by combining the power generation capacity and the dominant utilization.

[0018] The present invention has the following beneficial effects: The present invention provides an energy coordination control method based on the dynamic division of V2G power coverage areas. The method dynamically determines the theoretical total power supply of a parking lot by analyzing the user's vehicle usage habits based on the collected vehicle entry and exit registration information of the V2G-deployed parking lot. The initial coverage radius of the parking lot and the core coverage radius of the power consumption place are determined based on the theoretical total power supply. Then, the V2G power coverage area of ​​each parking lot in the current sub-period is determined by combining the initial coverage radius and the core coverage radius, so as to facilitate the adaptive determination of the V2G power distribution mode and improve the energy utilization efficiency of V2G power, that is, to achieve V2G power coordinated control. The V2G power coverage area determined in the present invention combines geographical proximity to facilitate priority coverage of high-load areas, which significantly improves the utilization efficiency of V2G power, can achieve optimal matching between high-load areas and V2G power generation locations, and reduces transmission losses; by adaptively adjusting the power coverage range through the core coverage radius, it can optimize the dynamic allocation of multiple energy sources, which helps to enhance the supply and demand balancing ability and stability of the power grid; based on user participation analysis, it guides the efficient participation of fixed users, improves the utilization rate of power resources, and provides an efficient and flexible coordination control solution for smart microgrids and urban energy management. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions and advantages of the embodiments of the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a flow chart for implementing an energy coordination control method based on dynamic division of V2G power coverage areas according to the present invention; Figure 2 Flowchart for implementing step S2 in an embodiment of the present invention; Figure 3 Flowchart for implementing step S31 in an embodiment of the present invention; Figure 4 Schematic diagram of the process of determining the V2G power coverage area in an embodiment of the present invention. DETAILED DESCRIPTION

[0021] To further illustrate the technical means and effects employed by the present invention to achieve its intended objectives, the following, in conjunction with the accompanying drawings and preferred embodiments, describes in detail the specific implementations, structures, features, and effects of the technical solutions proposed by the present invention. In the following description, references to "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

[0022] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0023] The application scenarios targeted by the present invention may be: The existing overall allocation of V2G electricity does not fully consider the geographical proximity between the power generation site and high-load areas, resulting in the inability of V2G electricity to efficiently supply high-load areas with greater demand. This V2G power allocation strategy may affect the overall operating efficiency of the power grid and fail to achieve an optimal match between high-load areas and V2G power generation sites.

[0024] In order to achieve the optimal match between high-load areas and V2G power supply, an embodiment of the present invention provides an energy coordination control method based on dynamic division of V2G power coverage areas, such as Figure 1 As shown, the following steps are included: S1, obtaining vehicle entry and exit registration information of each user vehicle in a current preset time period at several parking lots in the city where V2G has been deployed.

[0025] Here, for parking lots where V2G has been deployed, the power grid company usually signs an agreement with the parking lot manager and pays the corresponding fees to use the electric vehicle batteries in the parking lot as part of a virtual power plant. This business model can effectively alleviate the pressure on the power grid, especially during high-demand periods, such as hot weather in summer or cold weather in winter. In this embodiment, the vehicle entry and exit registration information includes the parking time of the user's vehicle in the current preset time period, the number of entries and exits in each sub-period, and the arrival time.

[0026] To ensure V2G power supply, the parking lot can be a large one. Large parking lots are usually located in corporate and commercial areas. The large number of people gathered means that electric vehicles are widely used. During the daily working hours, the large number of parked vehicles provides a huge opportunity for power scheduling and optimization.

[0027] In this embodiment, for any city, the parking management system of the deployed V2G parking lot collects the parking duration of each user vehicle in the current preset period, the number of entries and exits in each sub-period, and the arrival time.

[0028] Among them, the number of V2G deployed parking lots in different cities is different, so the number of parking lots is not specifically set; the current preset period can be set to the current month, and the sub-period can be days. The current preset period and sub-period can also be set by the implementer according to the specific actual situation without specific restrictions.

[0029] So far, this embodiment has obtained the parking duration, entry and exit times, and arrival time of each user vehicle in each V2G-deployed parking lot in the city within the current month.

[0030] S2, analyzing the user's car usage habits based on the vehicle entry and exit registration information of each parking lot, and determining the theoretical total power supply of each parking lot in the current sub-period.

[0031] Here, the theoretical total electricity supply refers to the current electricity supply situation predicted by the historical electricity supply situation.

[0032] As an exemplary embodiment, the above step S2 can be performed by Figure 2 The steps S21 to S23 shown implement: S21 , for any parking lot, determining the theoretical power supply contribution of the parking lot in the current sub-period based on the vehicle entry and exit registration information of each user vehicle in the parking lot.

[0033] Parking lots have a diverse user base, including office workers, short-term visitors, and frequent vehicle users. However, vehicles parked briefly in the parking lot, as well as those frequently used by staff like sales representatives, are unable to effectively contribute to the grid's power balance due to the uncertainty of their parking times. Therefore, for each vehicle in the parking lot, its power supply contribution needs to be determined based on its usage habits, including the number of entries and exits within each sub-period and the length of parking within the current preset period. This combined analysis of the power supply contributions of all vehicles in the parking lot can yield the parking lot's theoretical power supply contribution for the current sub-period.

[0034] Here, taking a parking lot as an example, the method of determining the theoretical power supply contribution of each parking lot in the current sub-period is the same. The theoretical power supply contribution refers to the ability of the entire parking lot to provide electricity to the power consumption site; because different sub-periods may be affected by external factors such as holidays, the ability of parking lots in different sub-periods to provide electricity to the power consumption site will be different, so this embodiment needs to determine the theoretical power supply contribution of the sub-period in real time.

[0035] As an exemplary embodiment, the above step S21 can be implemented through steps S211 to S213: S211 , for each user vehicle in the parking lot, determining the power supply contribution of the user vehicle according to the number of times the user vehicle enters and exits in each sub-period and the parking duration in the current preset period.

[0036] Here, power supply contribution refers to the ability of user vehicles as distributed energy storage units to provide flexible power support to the power grid.

[0037] As an exemplary embodiment, the above step S211 can be implemented by the following steps: The first step is to obtain the relative load of electricity consumption in each sub-period, and determine the sub-power supply contribution of the user vehicle in each sub-period based on the number of entry and exit times of the user vehicle in each sub-period and the relative load of electricity consumption.

[0038] Here, the relative load of electricity consumption refers to the total electricity consumption of the electricity consumption site in the vicinity of the parking lot, and the sub-power supply contribution refers to the ability of the user vehicle to provide electricity to the grid in a single sub-period.

[0039] In this embodiment, the impact of the user's occupation on the frequency of vehicle use is taken into account to reflect the effective contribution to grid utilization. Therefore, the frequency of entry and exit of the user's vehicle in each sub-period is obtained as a calculation factor for calculating the sub-power supply contribution. At the same time, it is also necessary to consider whether the user's vehicle entry and exit is during the peak power consumption period. The reason is that the power load pressure is relatively high during the peak power consumption period. At this time, the frequent entry and exit of the user's vehicle has a much greater impact on the overall power supply than during the low power consumption period. Therefore, it is necessary to obtain the relative power load as another calculation factor for calculating the sub-power supply contribution.

[0040] First, the relative power load of each sub-period is obtained.

[0041] The peak electricity consumption period at power consumption sites near parking lots is different from that of daily household electricity consumption. When commercial parking lots are operating at full capacity during holidays, it is necessary to analyze the peak electricity consumption period based on actual traffic flow and equipment operation data.

[0042] Specifically, the total electricity consumption of each sub-period in several historical periods of the electricity data collection system of all electricity consumption places within the preset range of the parking lot is obtained; the average total electricity consumption of the sub-periods with different week names in each historical period is calculated to obtain the average total electricity consumption corresponding to the sub-period of each week name; the ratio of the average total electricity consumption corresponding to a single week name to the cumulative value of the average total electricity consumption is used as the relative electricity load of the sub-period corresponding to the week name.

[0043] The relative load values ​​for sub-periods with the same day of the week are the same. The preset parking range can be within 1 kilometer. The historical period refers to the week of acquisition. The number of historical periods can be set to 10, and the implementer can also set it based on specific circumstances. The greater the number of historical periods, the more accurate the relative load values ​​obtained. Sub-periods refer to each day of the week. These sub-periods are configured similarly to the sub-periods described in step S1. Each day of the week has a corresponding day of the week, such as Monday, Tuesday, Wednesday, Thursday, etc.

[0044] As an example, the calculation formula for the relative load of electricity consumption on Monday can be: Where, Indicates the relative load of electricity consumption on Monday. It represents the average total electricity consumption on Monday in several historical periods, i represents the serial number of the day of the week, It represents the average total electricity consumption corresponding to the i-th week in several historical periods, Indicates the cumulative value of the average of all total electricity consumption.

[0045] Of course, implementers can also analyze the relative load of electricity consumption in sub-periods through other implementation means.

[0046] Secondly, the sub-power supply contribution of the user vehicle in each sub-period is determined according to the number of entries and exits of the user vehicle in each sub-period and the relative load of electricity consumption.

[0047] In this embodiment, the number of ingress and egress, relative power load, and sub-power supply contribution are all negatively correlated. That is, the greater the ingress and egress frequency and relative power load, the smaller the sub-power supply contribution. For example, the more frequent a user vehicle's ingress and egress occurs during a peak power consumption sub-period, the smaller the contribution of that vehicle to the overall V2G power system during that sub-period.

[0048] Specifically, the first product of the number of times the user's vehicle enters and exits in the same sub-period and the relative load of electricity consumption is calculated; the first product is negatively normalized to obtain a first normalized value, and the first normalized value is used as the sub-power supply contribution of the user's vehicle in the corresponding sub-period.

[0049] As an example, the calculation formula for the sub-power supply contribution of the user vehicle in the jth sub-period may be: Where, represents the contribution of the user vehicle to the power supply in the jth sub-period, represents the number of times the user's vehicle enters and exits in the jth sub-period, represents the relative load of electricity consumption of the user's vehicle in the jth sub-period, and exp(-) represents the negative correlation normalization function.

[0050] In the calculation formula for the sub-power supply contribution, if the j-th sub-period is Monday, the relative load of electricity consumption on Monday is obtained to calculate the sub-power supply contribution. There are multiple sub-periods with the same weekday name within the current preset time period. In this embodiment, the numerical values ​​of the relative load of electricity consumption for sub-periods with the same weekday name are the same. The larger the sub-power supply contribution, the greater the possibility that the user vehicle can provide electricity in the j-th sub-period and the more electricity provided.

[0051] In the second step, the power supply contribution of the user vehicle is determined based on the second accumulated value of the sub-power supply contribution of the user vehicle in each sub-period and the parking time in the current preset period.

[0052] In this embodiment, the second accumulated value and the parking duration are both positively correlated with the power supply contribution.

[0053] For the parking time within the current preset time period, the parking time can reflect whether the user's vehicle is a regular user of the parking lot, rather than a vehicle that occasionally passes by and parks briefly.

[0054] Specifically, first, the ratio of the user's vehicle parking time to the current preset time period is used as the fixed parking degree. That is, the ratio of the number of days the user's vehicle is parked to the number of days in the current month is analyzed to determine the fixed parking degree of the user's vehicle. Secondly, the product of the second accumulated value and the fixed parking degree is calculated. To facilitate numerical analysis, a linear normalization function is used to normalize the product of the two to obtain a normalized value, which is used as the power supply contribution of the user vehicle.

[0055] Among them, the second accumulated value is a comprehensive analysis of all sub-power supply contributions of the same user vehicle within the current preset time period. The larger the second accumulated value, the better the power supply status of the user vehicle analyzed from the perspective of the number of times the user vehicle enters and exits and the power consumption near the parked vehicle; the higher the fixed parking degree, the more opportunities the user vehicle has to perform power supply operations and the more sufficient the power provided, and the greater the power supply contribution of the user vehicle; the greater the power supply contribution of the user vehicle, the greater the role it plays in supplying power to the corresponding user vehicle in the parking lot. If the power supply contribution of each user vehicle in the parking lot is greater, the power supply contribution of the corresponding parking lot will be greater.

[0056] In summary, this embodiment evaluates the impact of each user on the V2G power supply by analyzing the usage habits of user vehicles in the parking lot, that is, determines the power supply contribution of each user vehicle.

[0057] After obtaining the power supply contribution of each user vehicle, the power supply of each parking lot can be analyzed. The higher the power supply contribution of each user vehicle in the parking lot, the more likely the corresponding vehicle is to participate in V2G power coordination based on the user's vehicle usage habits. Therefore, the theoretical power generation for the day can be dynamically estimated based on the initial arrival time of the user vehicle in the morning. Specifically, the arrival of each user vehicle is analyzed based on the theoretical working hours of commuters to estimate whether the user vehicle will appear in the current sub-period, thereby dynamically evaluating the estimated power generation of the parking lot in the current sub-period, that is, determining the total theoretical power supply of the parking lot in the current sub-period. This is achieved through the following steps S212 to S23.

[0058] S212 , constructing a theoretical arrival time period of the corresponding user vehicle according to the arrival time point of each user vehicle in each sub-time period, and selecting user vehicles whose arrival time points in the current sub-time period are within the corresponding theoretical arrival time period as theoretical user vehicles.

[0059] Here, theoretical user vehicles refer to user vehicles predicted to arrive within the theoretical arrival time period. By determining these theoretical user vehicles, we can, to a certain extent, exclude user vehicles that may not participate in V2G power coordination during the current sub-period due to vacation or other factors. This helps improve the numerical accuracy of the parking lot's theoretical power contribution during the current sub-period.

[0060] Specifically, based on the arrival time of each user vehicle in the morning of each sub-period (every day) within the current preset time period (nearly one month), the average of the arrival time points of the same user vehicle is calculated as the theoretical arrival time point of the corresponding user vehicle; the preset fluctuation period is 30 minutes, and a 15-minute period is determined before and after the theoretical arrival time point of each user vehicle to construct the theoretical arrival time period of each user vehicle; the theoretical arrival time period of each user vehicle is compared with the arrival time point of each user vehicle in the current sub-period (on the same day); if the actual arrival time point is within the theoretical arrival time period, the corresponding user vehicle is taken as the theoretical user vehicle, thereby obtaining all theoretical user vehicles.

[0061] S213 , taking the first accumulated value of the power supply contributions of all theoretical user vehicles in the current sub-period as the theoretical power supply contribution of the parking lot in the current sub-period.

[0062] In this embodiment, by accumulating the power supply contributions of all theoretical user vehicles in the current sub-period, a comprehensive analysis of the power supply conditions of all theoretical user vehicles in the parking lot is achieved, that is, the theoretical power supply contribution of the parking lot in the current sub-period is determined.

[0063] S22, obtaining the theoretical power supply contribution of the parking lot in the previous sub-period and the actual total V2G power supply.

[0064] In this embodiment, the theoretical power supply contribution of the previous sub-period is determined in the same manner as the theoretical power supply contribution of the current sub-period. The theoretical power supply contribution of the previous sub-period can be directly obtained by determining the theoretical power supply contribution of the current sub-period. The actual total V2G power supply can be directly obtained from the parking lot's V2G power supply system and used to predict the power supply situation in the current sub-period.

[0065] S23 , determining the theoretical total power supply of the parking lot in the current sub-period based on the theoretical power supply contribution of the parking lot in the current sub-period, the theoretical power supply contribution of the previous sub-period, and the actual total V2G power supply.

[0066] In this embodiment, based on the actual total V2G power supply in the previous sub-period, the theoretical total power supply of the parking lot in the current sub-period is predicted by the degree of deviation between the theoretical power supply contributions of two adjacent sub-periods.

[0067] Specifically, a first ratio of the theoretical power supply contribution of the parking lot in the current sub-period to the theoretical power supply contribution in the previous sub-period is calculated, and the second product of the first ratio and the actual total V2G power supply in the previous sub-period is used as the theoretical total power supply of the parking lot in the current sub-period.

[0068] As an example, the calculation formula for the theoretical total power supply of the parking lot in the current sub-period can be: Where, Indicates the theoretical total power supply of the parking lot in the current sub-period, Indicates the theoretical power supply contribution of the parking lot in the current sub-period. Indicates the theoretical power supply contribution of the parking lot in the previous sub-period of the current sub-period. Indicates the actual total V2G power supply of the parking lot in the previous sub-period of the current sub-period.

[0069] The theoretical total power supply of each parking lot in the current sub-period can be obtained by referring to the calculation process of the theoretical total power supply of any parking lot in the current sub-period.

[0070] So far, this embodiment has obtained the theoretical total power supply of each parking lot in the current sub-period.

[0071] S3: Determine the initial coverage radius of each parking lot based on the theoretical total power supply; analyze the power supply participation of fixed users in the parking lot through the initial coverage radius, and determine the core coverage radius of each target power consumption site corresponding to each parking lot.

[0072] Here, the initial coverage radius is represented by the radius of the V2G power coverage area preliminarily determined in the parking lot, the core coverage radius is represented by the V2G power coverage area determined for each power consumption site, the coverage area is a circular area centered on the parking lot or power consumption site, and the target power consumption site is the workplace of the user located in the initial coverage area where there is a theoretical user vehicle.

[0073] The electricity generated by the V2G system in the parking lot can be directly transmitted to nearby areas, ensuring grid stability and efficient power usage while also avoiding transmission losses associated with long-distance transmission. This system can be deployed from the parking lot as a central point, enabling efficient short-range power transmission. This overcomes the existing limitation of V2G power that prevents it from efficiently serving nearby high-load areas, improving energy efficiency.

[0074] S31: Determine the initial coverage radius of each parking lot based on the theoretical total power supply.

[0075] As an exemplary embodiment, the above step S31 can be performed by Figure 3 The steps S311 to S315 shown implement: S311 , for any parking lot, with the parking lot as the center, gradually expand the preset radius outward according to the preset step length to obtain a plurality of power supply coverage areas with to-be-determined radius.

[0076] In this embodiment, the parking lot is used as the center and the area is gradually expanded outward with a preset radius to obtain N power supply coverage areas of a predetermined radius. N is a positive integer, and an empirical value of 5 can be used. The preset radius can be 1 kilometer, and the preset step size can be 1 kilometer.

[0077] Regarding the determination of the initial coverage radius, in order to fully guarantee the power load within the power coverage area, it is necessary to adaptively determine the initial coverage radius of the current sub-period based on the theoretical total power supply of the parked vehicles in the current sub-period, which is specifically achieved through the following steps S312 to S315.

[0078] S312, obtaining the first total electricity consumption of all electricity consumption sites in the power supply coverage area of ​​each to-be-determined radius in the current sub-period, and the second total electricity consumption of all electricity consumption sites in the power supply coverage area of ​​each to-be-determined radius in several historical sub-periods corresponding to the current sub-period.

[0079] Here, the first total electricity consumption and the second total electricity consumption are electricity consumption conditions obtained in different sub-periods, and each historical sub-period has a corresponding second total electricity consumption.

[0080] In this embodiment, the power supply coverage area has obvious changes in electricity demand during holidays, that is, people go to work and take vacations, and there will be a large difference in electricity consumption on weekdays and holidays. Therefore, it is necessary to obtain the second total electricity consumption of several historical sub-periods corresponding to the current sub-period for all power consumption sites within each power supply coverage area with a predetermined radius.

[0081] For historical sub-periods, the day of the week is the same as the current sub-period. For example, if the current sub-period is Wednesday, the historical sub-periods are the Wednesday before last, the Wednesday before last, and so on. The number of historical sub-periods can be set to 10. The greater the number of historical sub-periods, the higher the accuracy of the second ratio value determined subsequently. Implementers can set this number based on specific circumstances and are not specifically limited here.

[0082] S313 : For each power supply coverage area with a to-be-determined radius, determine a second ratio according to a comparison result of the first total power consumption and an average of the second total power consumption corresponding to the power supply coverage area with the to-be-determined radius.

[0083] In this embodiment, the second ratio is used to represent the degree of similarity between the first total power consumption and the average of the second total power consumption. To limit the value range of the second ratio to between 0 and 1, the second ratio is determined based on the comparison result of the first total power consumption and the average of the second total power consumption. Specifically, the larger value of the first total power consumption and the average of the second total power consumption is used as the denominator, and the smaller value is used as the numerator to determine the second ratio.

[0084] Taking any power supply coverage area of ​​an undetermined radius as an example, when the first total electricity consumption is less than the average of the second total electricity consumption, the ratio of the first total electricity consumption to the average of the second total electricity consumption is used as the second ratio; when the first total electricity consumption is greater than the average of the second total electricity consumption, the ratio of the average of the second total electricity consumption to the first total electricity consumption is used as the second ratio.

[0085] The second average total electricity consumption refers to the average total electricity consumption of the power supply coverage area with a to-be-determined radius in all historical sub-periods.

[0086] S314 , setting a comparison threshold, and determining an estimated power consumption of each power supply coverage area with a to-be-determined radius based on a comparison result between each second ratio and the comparison threshold.

[0087] Here, the estimated power consumption may represent the estimated power demand of each power supply coverage area of ​​the to-be-determined radius. The greater the estimated power consumption, the greater the estimated power demand of the power supply coverage area of ​​the to-be-determined radius.

[0088] In this embodiment, the estimated power consumption of each power supply coverage area with a to-be-determined radius is determined through a comprehensive horizontal and vertical analysis. If the difference between the horizontal and vertical comparisons is too large, it means that unexpected situations are more likely to occur, such as holidays on that day and low electricity consumption in special circumstances. At this time, the average of the total electricity consumption in the historical sub-periods should be used as the estimated power consumption.

[0089] Specifically, the comparison threshold is set to 0.5; when the second ratio is greater than or equal to the comparison threshold, it means that the horizontal and vertical comparison differences are too large, and the maximum value of the first total electricity consumption and the second total electricity consumption is used as the estimated power consumption of the power supply coverage area of ​​the corresponding to-be-determined radius; otherwise, the average value of the first total electricity consumption and the second total electricity consumption is used as the estimated power consumption of the power supply coverage area of ​​the corresponding to-be-determined radius.

[0090] S315 , determining an initial coverage radius of the parking lot based on the estimated power consumption and the theoretical total power supply of each power supply coverage area with a to-be-determined radius.

[0091] Here, the estimated electricity consumption can represent the estimated electricity demand, and the theoretical total electricity supply can represent the estimated power generation. Based on the principle that the estimated power generation is greater than the estimated electricity demand, the initial coverage radius of the parking lot is selected from all pending radii.

[0092] Specifically, a pending radius with an estimated power consumption less than the theoretical total power supply is selected from all pending radii as the target radius; the difference between the theoretical total power supply and the estimated power consumption of the power supply coverage area of ​​each target radius is calculated, and the target radius corresponding to the minimum difference is used as the initial coverage radius of the parking lot.

[0093] S32: Analyze the power supply participation of fixed users in the parking lot through the initial coverage radius, and determine the core coverage radius of each target power consumption site corresponding to each parking lot.

[0094] Considering that users park their vehicles in parking lots equipped with V2G systems for power supply, the initial power supply area corresponding to the initial coverage radius should be adjusted to the power consumption locations of the fixed user groups participating in the power supply. Furthermore, to support the power supply contribution of the V2G system, priority power coverage should be given to large power consumption locations. Therefore, it is necessary to adjust the initial power supply coverage area based on the core coverage radius.

[0095] As an exemplary embodiment, the above step S32 can be implemented through S321 to S323: S321, for any parking lot, obtain the workplaces of users with theoretical user vehicles within the initial power supply coverage area centered on the parking lot, record them as target power consumption sites, and then count the number of theoretical users in all target power consumption sites.

[0096] In this embodiment, based on the registration information of each theoretical user vehicle in the parking lot, the workplace of the user of each theoretical user vehicle is obtained, such as office buildings, shopping malls, and large parks. In this way, the number of theoretical users in the initial power supply coverage area centered on the parking lot can be obtained, which is used to analyze the contribution of users to V2G electricity in the power consumption places located around the parking lot.

[0097] Specifically, the workplaces corresponding to each theoretical user's vehicle are first counted in the parking lot. The workplaces within the initial power supply coverage area centered on the parking lot are then determined, and the theoretical number of users located within the workplaces within the initial power supply coverage area is counted. The theoretical number of users refers to the owners of the theoretical user's vehicles.

[0098] It should be noted that, since the expansion is centered on the parking lot, the power consumption locations corresponding to the workplaces of some theoretical users' vehicles may not be within the initial power coverage of the parking lot or are in a critical situation.

[0099] S322 , performing normalization processing on the theoretical number of users to obtain a second normalized value, and using the second normalized value as the V2G participation contribution to the applied electric field.

[0100] In this embodiment, the second normalized value obtained by normalizing the theoretical number of users using the Softmax function can represent the V2G participation contribution of users in each power consumption site corresponding to the parking lot. The more users there are, the greater the V2G participation contribution, the more likely the V2G power coverage area is to include the power consumption sites of these theoretical user vehicles, and the larger the core coverage radius of the power consumption site will be.

[0101] S323 , determining the core coverage radius of each target power consumption site corresponding to the parking lot according to the V2G participation contribution and initial coverage radius of each power consumption site.

[0102] In this embodiment, for each power consumption site, the product of the V2G participation contribution of the power consumption site and the initial coverage radius is used as the core coverage radius of the power consumption site.

[0103] So far, this embodiment has obtained the core coverage radius of each target power consumption location corresponding to the parking lot.

[0104] The initial power supply coverage area can be subsequently adjusted based on the determined core coverage radius, which ensures that the power consumption site and its adjacent areas have priority when using electricity, thereby better meeting power demand and optimizing power supply efficiency. In other words, the initial power coverage area is adjusted in the direction of the user's work area without affecting the overall power coordination.

[0105] S4, combining the initial coverage radius of each parking lot and the core coverage radius of each target power consumption site, to determine the V2G power coverage area of ​​each parking lot in the current sub-period.

[0106] Taking into account the need to provide corresponding preferential power coverage for large-scale power consumption sites that contribute to V2G power supply, so that their areas and adjacent areas have priority in power consumption, this embodiment takes each large-scale power consumption site as the center and determines the core coverage area of ​​each power consumption site through the core coverage radius of the power consumption site.

[0107] Specifically, for any parking lot, obtain the initial power supply coverage area of ​​the parking lot and the power coverage areas of its corresponding target power consumption sites; determine the union area of ​​the power coverage areas of the target power consumption sites corresponding to the parking lot, and use the intersection area of ​​the union area and the initial power supply coverage area of ​​the parking lot as the V2G power coverage area of ​​the parking lot.

[0108] Among them, the radius of the initial power supply coverage area is the initial coverage radius, and the radius of the power coverage area is the core coverage radius.

[0109] The schematic diagram of the process of determining the V2G power coverage area is as follows Figure 4 As shown, in Figure 4 In the figure, A, B, C, and D are all large power consumption sites, the dotted lines are the core coverage radius of each large power consumption site, and E represents the initial power supply coverage area of ​​the parking lot.

[0110] It should be noted that adaptively adjusting the power coverage and optimizing the dynamic allocation of multiple energy sources will help enhance the power grid's supply and demand balancing capabilities and stability.

[0111] The V2G power coverage areas defined for parking lots in the city are now sufficient to meet the daily electricity demand. Furthermore, if excess V2G power is generated in the designated areas of each parking lot, it can be stored in local energy storage devices and released when needed.

[0112] S5, based on the V2G power coverage area and the non-V2G power coverage area in the city, uses a multi-port energy router to perform energy coordination control.

[0113] Here, the V2G power coverage area refers to the control area that is powered only by V2G power, and the non-V2G power coverage area in the city refers to other areas outside the V2G power coverage area corresponding to each V2G-deployed parking lot in the city, that is, other areas controlled by other green energy generation.

[0114] By analyzing the V2G system in the area where the parking lot is located, the corresponding power coverage area can be effectively determined. However, other areas in the city that are not covered by the V2G synergy effect cannot be distributed through the efficient power supply methods of neighboring parking lots. The city's power supply depends not only on the V2G system, but also on green energy generation methods such as photovoltaic power generation and wind power generation. Compared with V2G, these green energy generation methods are more susceptible to seasonality and weather changes, resulting in lower power generation stability and predictability.

[0115] Therefore, when multiple power generation methods coexist, the power output of each should be dynamically analyzed, and the most stable power generation method should be prioritized based on its dominance. This approach allows stable power generation methods to be prioritized for supplemental power in areas not covered by V2G power, ensuring a balanced and stable power supply across the city.

[0116] As an exemplary embodiment, the priority order of different power generation modes corresponding to the non-V2G power coverage area includes: The first step is to obtain the historical power generation and historical annual power generation of several power generation methods in each historical preset time period.

[0117] In this embodiment, a preset number of green energy power generation methods are obtained. The number of types of the invention methods needs to be determined by the implementer based on the specific power generation methods in different cities, and is not specifically limited here.

[0118] As an example, the monthly and annual power generation of various forms of power generation in the previous year are obtained through the city's power management system.

[0119] The second step is to determine the power production capacity performance of each power generation method in each historical preset period based on the power generation in each historical period and the historical annual power generation of each power generation method.

[0120] Here, the power production capacity performance is determined by the monthly power generation capacity of each power generation mode and the dominant utilization of different power generation modes. The greater the power production capacity performance, the greater the power generation priority of the corresponding power generation mode in the corresponding month.

[0121] Specifically, for any power generation method, the power generation capacity of this power generation method in each historical preset time period is determined based on the power generation of each historical time period and the historical annual power generation of this power generation method; the dominant utilization of this power generation method is determined based on the historical annual power generation of this power generation method and the historical annual power generation of all power generation methods; and the power production capacity performance of this power generation method in each historical preset time period is determined by combining the power generation capacity and the dominant utilization.

[0122] The third step is to sort the power production capacity performance of each power generation method in each historical preset period in descending order as the priority selection order of different power generation methods corresponding to the non-V2G power coverage area in the historical preset period.

[0123] In this embodiment, power control is performed for areas not covered by V2G power in the current sub-period based on the priority order of different power generation modes corresponding to historical preset periods corresponding to the current preset period. For example, if the current preset period is January, the priority order of different power generation modes corresponding to areas not covered by V2G power in January of the previous year is obtained.

[0124] In summary, V2G electricity has significant advantages over other renewable energy sources. Therefore, when dividing the electricity consumption areas of a city in the current sub-period, the electricity consumption areas are divided into V2G electricity coverage areas and non-V2G electricity coverage areas. The corresponding V2G electricity coverage areas only use V2G electricity to achieve energy control, while for non-V2G electricity coverage areas, the present invention analyzes the power production characteristics of different power generation methods and adaptively determines the corresponding priority power generation methods for different time periods to achieve energy control in non-V2G electricity coverage areas. By dividing the V2G electricity coverage areas into non-V2G electricity coverage areas, the present invention helps to achieve coordinated energy distribution of the power grid system through multi-port energy routers, fully ensuring the stability and power efficiency of the power grids in different areas, and ensuring intelligent scheduling and optimal distribution of electricity.

[0125] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. An energy coordination control method based on dynamic division of V2G power coverage area, characterized in that, It includes the following steps: Obtain the vehicle entry and exit registration information of each user vehicle in several deployed V2G parking lots in the city during the current preset period; the current preset period is evenly divided into several sub-periods; analyze the user's vehicle usage habits based on the vehicle entry and exit registration information of each parking lot, and determine the theoretical total power supply of each parking lot during the current sub-period; Determine the initial coverage radius of each parking lot according to the theoretical total power supply; analyze the power supply participation of the fixed users of the parking lot through the initial coverage radius, and determine the core coverage radius of each target power consumption place corresponding to each parking lot; combine the initial coverage radius of each parking lot and the core coverage radius of each target power consumption place to determine the V2G power coverage area of each parking lot during the current sub-period; Based on the V2G power coverage area and the non-V2G power coverage area in the city, use a multi-port energy router for energy coordination control.

2. The energy coordination control method based on dynamic division of V2G power coverage areas according to claim 1 is characterized in that: The step of analyzing the user's vehicle usage habits based on the vehicle entry and exit registration information of each parking lot and determining the theoretical total power supply of each parking lot during the current sub-period includes: For any parking lot, determine the theoretical power supply contribution degree of the parking lot during the current sub-period according to the vehicle entry and exit registration information of each user vehicle in the parking lot; the vehicle entry and exit registration information includes the parking duration during the current preset period, the number of entries and exits in each sub-period, and the arrival time point; Obtain the theoretical power supply contribution degree and the actual V2G power supply total amount of the previous sub-period of the parking lot during the current sub-period; Determine the theoretical total power supply of the parking lot during the current sub-period according to the theoretical power supply contribution degree of the parking lot during the current sub-period, the theoretical power supply contribution degree of the previous sub-period, and the actual V2G power supply total amount.

3. The energy coordination control method based on dynamic division of V2G power coverage area according to claim 2, characterized in that, The step of determining the theoretical power supply contribution degree of the parking lot during the current sub-period according to the vehicle entry and exit registration information of each user vehicle in the parking lot includes: For each user vehicle in the parking lot, determine the power supply contribution degree of the user vehicle according to the number of entries and exits of the user vehicle in each sub-period and the parking duration during the current preset period; Construct the theoretical arrival period corresponding to the user vehicle according to the arrival time point of each user vehicle in each sub-period, and screen out the user vehicles whose arrival time points are within the corresponding theoretical arrival period during the current sub-period as the theoretical user vehicles; Take the first cumulative value of the power supply contribution degrees of all theoretical user vehicles during the current sub-period as the theoretical power supply contribution degree of the parking lot during the current sub-period.

4. A method for energy coordination control based on dynamic division of V2G power coverage area according to claim 3, characterized in that The step of determining the power supply contribution degree of the user vehicle according to the number of entries and exits of the user vehicle in each sub-period and the parking duration during the current preset period includes: Obtain the relative load degree of power consumption in each sub-period, and determine the sub-power supply contribution degree of the user vehicle in each sub-period according to the number of entries and exits of the user vehicle in each sub-period and the relative load degree of power consumption; the relative load degree of power consumption represents the total power consumption situation of the power consumption places in the adjacent area of the parking lot. Determine the power supply contribution degree of the user vehicle based on the second cumulative value of the sub-power supply contribution degree of the user vehicle in each sub-period, in combination with the parking duration within the current preset period; both the second cumulative value and the parking duration are positively correlated with the power supply contribution degree.

5. A method for energy coordination control based on dynamic division of V2G power coverage area according to claim 4, characterized in that, The determination of the sub-power supply contribution degree of the user vehicle in each sub-period according to the number of entries and exits and the relative load degree of electricity consumption of the user vehicle in each sub-period includes: Calculate the first product of the number of entries and exits and the relative load degree of electricity consumption of the user vehicle in the same sub-period. Perform a negative-correlation normalization process on the first product to obtain a first normalized value, and use the first normalized value as the sub-power supply contribution degree of the user vehicle in the corresponding sub-period.

6. The energy coordination control method based on dynamic division of V2G power coverage area according to claim 2, wherein, The determination of the theoretical total power supply of the parking lot in the current sub-period according to the theoretical power supply contribution degree of the parking lot in the current sub-period, the theoretical power supply contribution degree of the previous sub-period, and the actual total V2G power supply includes: Calculate the first ratio of the theoretical power supply contribution degree of the parking lot in the current sub-period to the theoretical power supply contribution degree of the previous sub-period, and use the second product of the first ratio and the actual total V2G power supply of the previous sub-period as the theoretical total power supply of the parking lot in the current sub-period.

7. The energy coordination control method based on dynamic division of V2G power coverage areas according to claim 1 is characterized in that: The determination of the initial coverage radius of each parking lot according to the theoretical total power supply includes: For any parking lot, with the parking lot as the center, gradually expand outward step by step according to a preset step length for a preset radius to obtain a number of power supply coverage areas with undetermined radii. Obtain the first total electricity consumption of all electric fields within the power supply coverage area with an undetermined radius in the current sub-period, and the second total electricity consumption of all electric fields within the power supply coverage area with an undetermined radius in a number of historical sub-periods corresponding to the current sub-period; the historical sub-period has the same day of the week as the current sub-period. For each power supply coverage area with an undetermined radius, determine a second ratio according to the comparison result between the first total electricity consumption corresponding to the power supply coverage area with an undetermined radius and the average value of the second total electricity consumption. Set a comparison threshold, and determine the estimated power consumption of each power supply coverage area with an undetermined radius according to the comparison result between each second ratio and the comparison threshold. Determine the initial coverage radius of the parking lot according to the estimated power consumption of each power supply coverage area with an undetermined radius and the theoretical total power supply.

8. The energy coordination control method based on dynamic division of V2G power coverage areas according to claim 7 is characterized in that: The determination of the second ratio according to the comparison result between the first total electricity consumption corresponding to the power supply coverage area with an undetermined radius and the average value of the second total electricity consumption includes: When the first total electricity consumption is less than the average value of the second total electricity consumption, use the ratio of the first total electricity consumption to the average value of the second total electricity consumption as the second ratio. When the first total electricity consumption is greater than the average value of the second total electricity consumption, use the ratio of the average value of the second total electricity consumption to the first total electricity consumption as the second ratio.

9. A method for energy coordination control based on dynamic division of V2G power coverage area according to claim 7, characterized in that The determination of the estimated power consumption of each power supply coverage area with an undetermined radius according to the comparison result between each second ratio and the comparison threshold includes: When the second ratio is greater than or equal to the comparison threshold, the maximum value of the first total electricity consumption and the second total electricity consumption is used as the estimated power consumption of the power supply coverage area corresponding to the to-be-determined radius. Otherwise, the average value of the first total electricity consumption and the second total electricity consumption is used as the estimated power consumption of the power supply coverage area corresponding to the to-be-determined radius.

10. A method for energy coordination control based on dynamic division of V2G power coverage area according to claim 7, characterized in that, Determining the initial coverage radius of the parking lot according to the estimated power consumption of the power supply coverage area corresponding to each to-be-determined radius and the total theoretical power supply amount includes: Selecting the to-be-determined radii with estimated power consumption less than the total theoretical power supply amount from all the to-be-determined radii as the target radii; Calculating the difference between the total theoretical power supply amount and the estimated power consumption of the power supply coverage area corresponding to each target radius, and taking the target radius corresponding to the minimum difference as the initial coverage radius of the parking lot.

11. A method for energy coordination control based on dynamic division of V2G power coverage area according to claim 1, characterized in that Analyzing the power supply participation of the fixed users in the parking lot through the initial coverage radius to determine the core coverage radius of each target power consumption place corresponding to each parking lot includes: For any parking lot, obtaining the workplaces of the users with theoretical user vehicles in the initial power supply coverage area centered on the parking lot, which are recorded as the target power consumption places, and then counting the number of theoretical users in all the target power consumption places; Performing normalization processing on the number of theoretical users to obtain the second normalization value, and taking the second normalization value as the V2G participation contribution degree of the corresponding power consumption place; Determining the core coverage radius of each target power consumption place corresponding to the parking lot according to the V2G participation contribution degree of each power consumption place and the initial coverage radius.

12. The energy coordination control method based on dynamic division of V2G power coverage area according to claim 1, wherein Combining the initial coverage radius of each parking lot and the core coverage radius of each target power consumption place to determine the V2G power coverage area of each parking lot in the current sub-period includes: For any parking lot, obtaining the initial power supply coverage area of the parking lot and the power coverage areas of its corresponding target power consumption places, where the radius of the initial power supply coverage area is the initial coverage radius, and the radius of the power coverage area is the core coverage radius; Determining the union area of the power coverage areas of each target power consumption place corresponding to the parking lot, and taking the intersection area of the union area and the initial power supply coverage area of the parking lot as the V2G power coverage area of the parking lot.

13. The energy coordination control method based on dynamic division of V2G power coverage area according to claim 1, wherein Obtaining the preferred selection order of different power generation methods corresponding to the non-V2G power coverage area includes: Obtaining the historical period power generation amounts and historical annual power generation amounts of several power generation methods in each historical preset period; Determining the power production performance degree of each power generation method in each historical preset period according to the historical period power generation amounts and the historical annual power generation amounts of each power generation method; For each historical preset period, taking the power production performance degree of each power generation method in the historical preset period in descending order as the preferred selection order of different power generation methods corresponding to the non-V2G power coverage area in the historical preset period.

14. A method for energy coordination control based on dynamic division of V2G power coverage area according to claim 13, characterized in that, Determining the power production performance degree of each power generation method in each historical preset period according to the historical period power generation amounts and the historical annual power generation amounts of each power generation method includes: For any power generation method, determine the power generation capacity of this power generation method in each of the historical preset time periods according to the power generation amounts in each of the historical time periods of this power generation method and the annual historical power generation amount; Determine the dominant utilization degree of this power generation method according to the annual historical power generation amount of this power generation method and the annual historical power generation amounts of all power generation methods; Combine the power generation capacity and the dominant utilization degree to determine the power production performance of this power generation method in each historical preset time period.

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