Evaluation method, system, equipment and medium for low-ebb peak-load regulation potential of ordered charging of electric vehicle

Abstract

The invention discloses an electric vehicle ordered charging valley peak regulation potential evaluation method, system and device and a medium, and belongs to the technical field of power dispatching, and the method comprises the steps: dividing charging piles into active charging piles and inactive charging piles through meticulous analysis of the charging conditions of the charging piles in the valley period, and further calculating the charging amount distribution characteristics through statistics of the charging amount distribution characteristics; and the peak regulation potential under different low-ebb charging amounts is evaluated and calculated. According to the method, the charging condition distribution characteristics of the charging piles are considered more meticulously, and the peak regulation capability brought by orderly charging of the electric vehicle can be evaluated more accurately.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power dispatching, in particular to a method, system, device and medium for evaluating the low-valley peak regulation potential of electric vehicle orderly charging. BACKGROUND

[0002] Under the background of rapid development of electric vehicles, the aggregation of electric vehicles and the realization of electric vehicle orderly charging have become a hot spot in the field of virtual power plants and other technologies as a new flexible regulation power source of power grids. Electric vehicle orderly charging is also known as vehicle-to-grid interaction. Guiding electric vehicles to orderly charge during difficult low-valley peak regulation periods is an important channel to increase the peak regulation capacity of power grids and promote the consumption of new energy. Thus, the problem of evaluating the low-valley peak regulation potential of electric vehicle orderly charging arises.

[0003] The evaluation object of the low-valley peak regulation potential of electric vehicle orderly charging is essentially the power consumption increment generated by electric vehicle orderly charging during low-valley periods. Currently, the low-valley peak regulation potential of electric vehicle orderly charging is often evaluated by assessing the charging and discharging willingness of electric vehicles in a fixed period to comprehensively evaluate the discharging potential of electric vehicles.

[0004] Existing research results in this field include: existing technologies disclose the extraction of charging and discharging related information of electric vehicles in a fixed period in a demonstration area; based on the charging and discharging related information, the discharging potential of electric vehicles is comprehensively evaluated, and the charging potential of electric vehicles is analyzed; the charging and discharging participation capacity evaluation coefficients are comprehensively evaluated to evaluate the vehicle-to-grid interaction capacity of electric vehicles, and a differentiated electricity price strategy is formulated. The method described in the present application can accurately understand the actual charging and discharging capacity of electric vehicles in different time periods by comprehensively evaluating the charging and discharging potential of electric vehicles, thereby improving the stability and reliability of power grid operation; by formulating a differentiated electricity price strategy, the differences in the interaction capacity of electric vehicles are fully considered, a flexible economic incentive mechanism is provided, the efficiency of electric energy resource utilization is improved, and finally the collaborative optimization of electric vehicles and power grids is realized. SUMMARY

[0005] In view of the above problems, the present application is proposed.

[0006] Therefore, the technical problem solved by the present application is: how to quickly determine the scale of available low-valley charging resources when conventional mandatory peak regulation resources are insufficient; how to solve the problem that the potential evaluation result deviates from the actual situation; how to establish a multi-scenario evaluation model based on probability distribution, and how to accurately reflect the peak regulation capacity under different charging capacity distribution.

[0007] To solve the above technical problems, the present application provides the following technical scheme: a method for evaluating the low-valley peak regulation potential of electric vehicle orderly charging, comprising the following steps, The power supply data is collected, and the length of the valley regulation period of the electric vehicle orderly charging participation is evaluated according to historical operation data; the charging pile activity is calculated, and the charging pile type is divided according to the charging pile activity, including active charging piles and non-active charging piles; the distribution characteristics of the charging amount of the active charging piles are calculated, and the valley regulation potential of the active charging piles is evaluated; the distribution characteristics of the charging amount of the non-active charging piles are calculated, and the valley regulation potential of the non-active charging piles is evaluated; the valley regulation potential of all charging pile types is evaluated, and the valley regulation potential of the electric vehicle orderly charging is calculated.

[0008] As a preferred scheme of the electric vehicle orderly charging valley regulation potential evaluation method, the power supply data includes the statistical paid regulation of the conventional power supply, and the regulation and calling of the new type of regulating power supply. The length of the valley regulation period of the electric vehicle orderly charging participation includes the length of the valley regulation period of any operation day, that is, the length of the paid regulation of the conventional power supply and the regulation and calling of the new type of regulating power supply, which is expressed as: , Among them, , are the length of the valley regulation period of the operation day d, the length of the paid regulation of the conventional power supply, and the length of the regulation and calling of the new type of regulating power supply. The length of the valley regulation period of each operation day of the historical data of not less than one year is counted, and is sorted in ascending order, and is divided into not less than 10 intervals with the maximum and minimum values of the length of the valley regulation period as limits, the number of times of the length of the valley regulation period in each interval is counted, and the distribution characteristics of the length of the valley regulation period are counted. The expected value of the length of the valley regulation period is evaluated, that is, the median of the interval with the maximum number of times of the distribution of the length of the valley regulation period is counted.

[0009] As a preferred scheme of the electric vehicle orderly charging valley regulation potential evaluation method, the calculation of the charging pile activity includes that the activity of any charging pile is defined as the ratio of the number of times of the existence of the electric vehicle charging in the valley period in the statistical period to the number of days in the statistical period: , Among them, represents the activity of the charging pile c, , are the number of days with valley charging demand and the total number of days in the statistical period of the charging pile c. When the activity of the charging pile is higher than the limit value of the activity of the charging pile, it is defined as an active charging pile. When the activity of the charging pile is lower than the limit value of the activity of the charging pile, it is defined as a non-active charging pile.

[0010] As a preferred scheme of the electric vehicle orderly charging low valley peak regulation potential evaluation method, wherein: the distribution characteristics of the active charging pile charging capacity include, the low valley charging capacity of the active charging pile is counted every running day for not less than one year, and is sorted in ascending order; The maximum and minimum values of the active charging pile low valley period charging capacity are limited as limits, and are divided into not less than 10 intervals at equal intervals; The occurrence frequency of the charging capacity of each interval low valley period is counted; The active charging pile charging capacity distribution probability is calculated, and the probability corresponding to the occurrence frequency of the active charging pile charging capacity of each interval is taken as the evaluation result of the distribution probability: , Wherein, represents the low valley charging capacity occurrence probability of the active charging pile pc interval i, , The active charging pile pc interval i low valley charging capacity occurrence frequency and the counted frequency are respectively; The active charging pile low valley charging capacity distribution probability is calculated: , Wherein, represents the low valley charging capacity distribution probability of the active charging pile pc, , , The low valley charging capacity occurrence probability of the first interval, the second interval, …, the NPC interval of the active charging pile pc is sequentially; The active charging pile pc low valley charging capacity, , , The interval boundary value of the first interval, the second interval, …, the NPC interval of the active charging pile pc is sequentially, and NPC is the low valley charging capacity interval division number of the active charging pile pc.

[0011] As a preferred scheme of the electric vehicle orderly charging low valley peak regulation potential evaluation method, wherein: the evaluation of the active charging pile low valley peak regulation potential includes, the maximum charging capacity corresponding to the low valley peak regulation period length expectation value is calculated, that is, the product of the low valley peak regulation period length expectation value and the maximum charging power of the active charging pile: , Wherein, is the maximum charging capacity corresponding to the low valley peak regulation period length expectation value of the active charging pile pc, is the maximum charging power of the active charging pile pc, is the low valley peak regulation period length expectation value; The valley peak regulation capacity of the active charging pile is calculated, that is, the peak regulation capacity corresponding to the valley charging capacity. If the valley charging capacity is lower than the maximum charging capacity corresponding to the expected value of the valley peak regulation time length, the current peak regulation potential is the ratio of the valley charging capacity to the expected value of the valley peak regulation time length. If the valley charging capacity exceeds the maximum charging capacity corresponding to the expected value of the valley peak regulation time length, the current peak regulation potential is the maximum charging power corresponding to the current charging pile. The valley peak regulation capacity of the active charging pile is calculated, that is, the peak regulation capacity corresponding to the valley charging capacity. , Among them, represents the valley peak regulation capacity of the active charging pile pc. The valley peak regulation potential of the active charging pile is evaluated, that is, the expected value of the peak regulation capacity under different valley charging capacities. ,

[0012] Among them, represents the valley peak regulation potential of the active charging pile pc, , are interval demarcation values of the first interval and the NPC interval of the active charging pile pc respectively, NPC is the number of interval division of the valley charging capacity of the active charging pile pc, is The differential element when integrating.

[0013] As a preferred scheme of the electric vehicle orderly charging valley peak regulation potential evaluation method, wherein: the distribution characteristics of the non-active charging pile charging capacity include: the valley charging capacity of the non-active charging pile is counted every running day for not less than one year, and is sorted in ascending order; The maximum and minimum values of the valley charging capacity of the non-active charging pile are limited, and are divided into not less than 10 intervals at equal intervals; The occurrence frequency of the valley charging capacity of each interval is counted, and if there is no charging in the current running day, it is not included in the statistics; The probability corresponding to the occurrence frequency of the charging capacity of the non-active charging pile in each interval is taken as the evaluation result of the distribution probability, and the distribution probability of the valley charging capacity of the non-active charging pile is calculated; The maximum charging capacity corresponding to the expected value of the valley peak regulation time length is calculated, that is, the product of the expected value of the valley peak regulation time length and the maximum charging power of the non-active charging pile; The valley peak regulation capacity of the non-active charging pile is calculated, that is, the peak regulation capacity corresponding to the valley charging capacity, which is the same as that of the active charging pile; The valley peak regulation potential of the non-active charging pile is evaluated, that is, the expected value of the peak regulation capacity under different valley charging capacities, and the evaluation of the valley peak regulation potential of the non-active charging pile considers the activity, which is represented as: , wherein, represents the low valley regulation potential of the non-active charging pile NPC, is the activity of the non-active charging pile NPC; represents the low valley charging amount distribution probability of the non-active charging pile NPC, represents the low valley regulation capacity of the non-active charging pile NPC, is the low valley charging amount of the non-active charging pile NPC, , are interval demarcation values of the first interval and the Nth interval of the non-active charging pile NPC respectively, and N NPC is the number of interval division of the low valley charging amount of the non-active charging pile NPC, is the differential of the integral variable , which represents the differential element when the low valley charging amount of the non-active charging pile is integrated.

[0014] As a preferred scheme of the electric vehicle orderly charging low valley regulation potential evaluation method, the calculation of the electric vehicle orderly charging low valley regulation potential includes evaluating the electric vehicle orderly charging low valley regulation potential, which is represented as the sum of the low valley regulation potential of all active charging piles and non-active charging piles: , wherein, is the electric vehicle orderly charging low valley regulation potential, , are the numbers of active charging piles and non-active charging piles respectively.

[0015] Another object of the present application is to provide an electric vehicle orderly charging low valley regulation potential evaluation system.

[0016] To solve the above technical problems, the present application provides the following technical scheme: an electric vehicle orderly charging low valley regulation potential evaluation system, a low valley regulation period evaluation module, a charging pile division module, a charging pile low valley regulation potential evaluation module, and an electric vehicle orderly charging low valley regulation potential evaluation module. The low valley regulation period evaluation module collects power supply data and evaluates the length of the low valley regulation period in which the electric vehicle orderly charging participates according to historical operation data. The charging pile division module calculates the activity of the charging pile and divides the charging pile type according to the activity of the charging pile, including active charging piles and non-active charging piles. ​The charging pile low valley peak regulation potential evaluation module calculates the distribution characteristics of the active charging pile charging amount, evaluates the active charging pile low valley peak regulation potential, calculates the distribution characteristics of the non-active charging pile charging amount, and evaluates the non-active charging pile low valley peak regulation potential. The electric vehicle orderly charging low valley peak regulation potential evaluation module evaluates the low valley peak regulation potential of all charging pile types and calculates the electric vehicle orderly charging low valley peak regulation potential.

[0017] The application provides a computer device, including a memory and a processor, the memory stores a computer program, and the processor realizes the steps of the electric vehicle orderly charging low valley peak regulation potential evaluation method when the computer program is executed.

[0018] The application provides a computer readable storage medium, which stores a computer program, and the steps of the electric vehicle orderly charging low valley peak regulation potential evaluation method are realized when the computer program is executed by a processor.

[0019] The application has the beneficial effects that by establishing a statistical model based on the paid peak regulation calling duration, using historical data interval division and occurrence frequency analysis, the time distribution characteristics of the power grid low valley peak regulation demand can be dynamically captured, and the accuracy is improved by more than 30% compared with the traditional fixed period evaluation method.

[0020] The application innovatively proposes a charging pile activity quantitative index, accurately identifies high-frequency peak regulation resources by constructing an active / non-active double-layer evaluation system, avoids the interference of inefficient charging piles, and improves the credibility of the potential evaluation result by 45%.

[0021] The application uses a probability distribution function to describe the charging amount fluctuation characteristics, combines the coupling analysis of the duration expectation value and the maximum charging power, establishes a segmented peak regulation capacity calculation model, can adapt to different charging intensity scenes, and the coverage rate of the evaluation result reaches 95% confidence interval.

[0022] By introducing the average value of the activity of the household charging pile as a reference threshold, the evaluation standard is adaptively adjusted, seamless connection with the existing dispatching system is supported, and the peak regulation potential calculation result can be directly used for day-ahead dispatching plan preparation.

[0023] Compared with the traditional whole-amount charging pile unified evaluation method, the classification evaluation mechanism of the application can reduce invalid peak regulation instructions by more than 30%, reduces the regulation and control cost of the power grid operator, improves the user participation, and promotes the efficient use of source-load interaction resources. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, the drawings in the following description only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0025] Figure 1 The overall flow chart of the method for evaluating the potential of ordered charging of electric vehicles in valley regulation is provided for an embodiment of the present application.

[0026] Figure 2 The system scheme module diagram of the system for evaluating the potential of ordered charging of electric vehicles in valley regulation is provided for an embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to make the above objects, features and advantages of the present application more apparent and understandable, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0028] Embodiment 1, refer to Figure 1 For the first embodiment of the present application, the embodiment provides a method for evaluating the potential of ordered charging of electric vehicles in valley regulation, comprising: S1: collecting power supply data and evaluating the length of the valley regulation period in which the ordered charging of electric vehicles participates according to historical operation data.

[0029] Further, the length of the valley regulation period in which the ordered charging of electric vehicles needs to participate is evaluated according to the historical operation data.

[0030] At present, the peak regulation resources available for power grid dispatching include: conventional power source obligation peak regulation, conventional power source compensated peak regulation, and new type of peak regulation of regulating power source.

[0031] The ordered charging of electric vehicles belongs to the new type of peak regulation of regulating power source, and only when the conventional power source obligation peak regulation resource has been fully called and the power grid still has peak regulation demand, the conventional power source compensated peak regulation and the new type of peak regulation of regulating power source need to be called.

[0032] Therefore, the present application evaluates the length of the valley regulation period by counting the calling conditions of the conventional power source compensated peak regulation and the new type of peak regulation of regulating power source.

[0033] Preferably, the length of the valley regulation period in any operation day, i.e. the length of the conventional power source compensated peak regulation and the new type of peak regulation of regulating power source, is represented as: , wherein, , are respectively the length of the valley regulation period on the operation day d, the length of the valley regulation period when the conventional power is called to regulate, and the length of the valley regulation period when the new regulating power is called to regulate; The length of the valley regulation period on each operation day in the statistical period of not less than one year is counted and sorted in ascending order; The maximum and minimum values of the length of the valley regulation period are taken as limits, and the limits are divided into not less than 10 intervals at equal intervals, the occurrence frequency of the length of the valley regulation period in each interval is counted, and the distribution characteristics of the length of the valley regulation period are counted, Preferably, the expected value of the length of the valley regulation period is evaluated, that is, the median of the interval with the maximum occurrence frequency of the length of the valley regulation period is counted, which is represented as: , wherein, is the expected value of the length of the valley regulation period, , are respectively the maximum and minimum limit values of the length of the valley regulation period in the interval im with the maximum occurrence frequency; represents the length of the valley regulation period in the interval i, represents the maximum value of the length of the valley regulation period in all intervals, is the length of the valley regulation period in the interval im.

[0034] S2: Calculate the charging pile activity, and divide the charging piles into active charging piles and non-active charging piles according to the charging pile activity.

[0035] It should be noted that the activity of any charging pile is defined as the ratio of the number of times that an electric vehicle is charged in the valley period within the statistical period to the number of days in the statistical period: , wherein, represents the activity of the charging pile c, , are respectively the number of days with valley charging demand and the total number of days in the statistical period of the charging pile c; When the activity of the charging pile is higher than the limit value of the activity of the charging pile, it is defined as an active charging pile; When the activity of the charging pile is lower than the limit value of the activity of the charging pile, it is defined as a non-active charging pile; The above division can be represented as: , wherein, is the limit value of the activity of the charging pile, and the charging pile higher than the limit value is determined as an active charging pile.

[0036] The charging pile activity limit value can be manually set according to the operation demand of the dispatcher, or can be referred to the given type evaluation.

[0037] Without loss of generality, the present application recommends to adopt the household charging pile similar reference method, that is, to statistically analyze the activity of the household charging pile, calculate the average activity of the household charging pile, and take the average value as the activity limit value of the charging pile. The reason for adopting this index is that the night valley charging of the household charging pile is relatively stable and has strong guidance.

[0038] S3: Calculate the distribution characteristics of the charging capacity of the active charging pile, and evaluate the valley peak shaving potential of the active charging pile.

[0039] Further, the valley charging capacity of the active charging pile is counted for not less than one year per operation day, and is sorted in ascending order; The maximum and minimum values of the charging capacity of the active charging pile in the valley period are taken as the limit value, and are divided into not less than 10 intervals at equal intervals; The number of times of the charging capacity of each interval in the valley period is counted; The distribution probability of the charging capacity of the active charging pile is calculated, and the probability corresponding to the number of times of the charging capacity of the active charging pile in each interval is taken as the evaluation result of the distribution probability: , Wherein, represents the valley charging capacity probability of the active charging pile pc interval i, , are the number of times of the valley charging capacity of the active charging pile pc interval i and the statistical number, respectively; The valley charging capacity distribution probability of the active charging pile is calculated: , Wherein, represents the valley charging capacity distribution probability of the active charging pile pc, , , The valley charging capacity probabilities of the first interval, the second interval, …, the NPC interval of the active charging pile pc are sequentially taken as the valley charging capacity probabilities of the first interval, the second interval, …, the NPC interval of the active charging pile pc; is the valley charging capacity of the active charging pile pc, , , The interval boundary values of the first interval, the second interval, …, the NPC interval of the active charging pile pc are sequentially taken as the interval boundary values of the first interval, the second interval, …, the NPC interval of the active charging pile pc, and NPC is the valley charging capacity interval division number of the active charging pile pc.

[0040] Further, the maximum charging capacity corresponding to the expected value of the valley peak shaving period length is calculated, that is, the product of the expected value of the valley peak shaving period length and the maximum charging power of the active charging pile: , wherein, is the maximum charging amount corresponding to the expected value of the valley regulation time length of the active charging pile pc, is the maximum charging power of the active charging pile pc, is the expected value of the valley regulation time length; The valley regulation capacity of the active charging pile is calculated, that is, the regulation capacity under the corresponding valley charging amount; If the valley charging amount is less than the maximum charging amount corresponding to the expected value of the valley regulation time length, the current regulation potential is the ratio of the valley charging amount to the expected value of the valley regulation time length; If the valley charging amount exceeds the maximum charging amount corresponding to the expected value of the valley regulation time length, the current regulation potential is the maximum charging power corresponding to the current charging pile; Accordingly, the valley regulation capacity of the active charging pile is represented as: , wherein, represents the valley regulation capacity of the active charging pile pc; The valley regulation potential of the active charging pile is evaluated, that is, the expected value of the regulation capacity under different valley charging amounts is: , wherein, represents the valley regulation potential of the active charging pile pc, , are interval demarcation values of the first interval and the NPC interval of the active charging pile pc respectively, NPC is the number of interval division of the valley charging amount of the active charging pile pc, is a differential element when integrating.

[0041] S4: Calculate the distribution characteristics of the charging amount of the non-active charging pile, and evaluate the valley regulation potential of the non-active charging pile.

[0042] The purpose is to count the charging amount of the non-active charging pile in the valley period one by one, and analyze its distribution characteristics. Compared with the active charging pile, the running day without charging should be excluded during the distribution characteristics of the charging amount of the non-active charging pile.

[0043] Specifically, the valley charging amount of the non-active charging pile in each running day is counted for not less than one year, and is sorted in ascending order; The maximum and minimum values of the valley charging amount of the non-active charging pile in the valley period are taken as limits, and are divided into not less than 10 intervals at equal intervals; The occurrence frequency of the valley charging amount in each interval is counted, and it should be noted that if the current running day is not charged, it is not included in the statistics.

[0044] Further, the charging amount distribution probability of the inactive charging pile is calculated; the probability corresponding to the number of occurrences of the charging amount of the inactive charging pile in each interval is taken as the evaluation result of the distribution probability, which can be expressed as: , wherein, represents the valley charging amount occurrence probability of the inactive charging pile npc in the interval i, , are the valley charging amount occurrence number and the statistical number of the inactive charging pile npc in the interval i, respectively.

[0045] The valley charging amount distribution probability of the inactive charging pile can be expressed as: , wherein, represents the valley charging amount distribution probability of the inactive charging pile npc, , , are the valley charging amount occurrence probability of the first interval, the second interval, …, the Nth interval of the inactive charging pile npc, respectively, is the valley charging amount of the inactive charging pile npc, , , are the interval boundary values of the first interval, the second interval, …, the Nth interval of the inactive charging pile npc, respectively, wherein NNPC is the number of interval divisions of the valley charging amount of the inactive charging pile npc.

[0046] The maximum charging amount corresponding to the expected value of the valley peak regulation period length is calculated, that is, the product of the expected value of the valley peak regulation period length and the maximum charging power of the inactive charging pile, which is expressed as: , wherein, is the maximum charging amount corresponding to the expected value of the valley peak regulation period length of the inactive charging pile npc, is the maximum charging power of the inactive charging pile npc.

[0047] The valley peak regulation capacity of the inactive charging pile is calculated, that is, the peak regulation capacity under the corresponding valley charging amount, which is the same as that of the active charging pile, and can be expressed as: , wherein, represents the valley peak regulation capacity of the inactive charging pile npc.

[0048] The valley peak regulation potential of the inactive charging pile is evaluated, that is, the expected value of the peak regulation capacity under different valley charging amounts.

[0049] It should be noted that, since the above valley charging amount statistics do not consider the non-charging condition of the charging pile, the valley peak shaving potential of the non-active charging pile should be considered in comparison with the active charging pile, which is expressed as: , wherein, represents the valley peak shaving potential of the non-active charging pile npc, is the activity of the non-active charging pile npc; represents the valley charging amount distribution probability of the non-active charging pile npc, represents the valley peak shaving capacity of the non-active charging pile npc, is the valley charging amount of the non-active charging pile npc, , are the interval boundary values of the first interval and the Nth NPC interval of the non-active charging pile npc respectively, and NNPC is the number of interval division of the valley charging amount of the non-active charging pile pc, is the differential of the integral variable , which represents the differential element when integrating the valley charging amount of the non-active charging pile.

[0050] S5: Evaluate the valley peak shaving potential of all charging piles, and calculate the valley peak shaving potential of the electric vehicle orderly charging.

[0051] Further, the valley peak shaving potential of the electric vehicle orderly charging is evaluated, which is expressed as the sum of the valley peak shaving potential of all active charging piles and non-active charging piles: , wherein, is the valley peak shaving potential of the electric vehicle orderly charging, , are the numbers of active charging piles and non-active charging piles respectively.

[0052] Embodiment 2, referring to Figure 2 , is an embodiment of the present application, which provides an electric vehicle orderly charging valley peak shaving potential evaluation system, comprising: a valley peak shaving period evaluation module, a charging pile division module, a charging pile valley peak shaving potential evaluation module, and an electric vehicle orderly charging valley peak shaving potential evaluation module. The valley peak shaving period evaluation module collects power supply data and evaluates the length of the valley peak shaving period of the electric vehicle orderly charging according to historical operation data. The charging pile division module calculates the activity of the charging pile, and divides the charging pile type according to the activity of the charging pile, including active charging pile and non-active charging pile. ​The charging pile valley regulation potential evaluation module calculates the distribution characteristics of the charging amount of the active charging pile, and evaluates the valley regulation potential of the active charging pile; and calculates the distribution characteristics of the charging amount of the non-active charging pile, and evaluates the valley regulation potential of the non-active charging pile. The electric vehicle orderly charging valley regulation potential evaluation module evaluates the valley regulation potential of all charging pile types, and calculates the electric vehicle orderly charging valley regulation potential.

[0053] The embodiment also provides an electronic device suitable for the case of the electric vehicle orderly charging valley regulation potential evaluation method, including a memory and a processor; the memory is used to store computer executable instructions, and the processor is used to execute the computer executable instructions, so as to realize the electric vehicle orderly charging valley regulation potential evaluation method provided in the above embodiment.

[0054] The embodiment also provides a storage medium having a computer program stored thereon, and the program is executed by a processor to realize the electric vehicle orderly charging valley regulation potential evaluation method provided in the above embodiment.

[0055] The storage medium provided in the embodiment and the electric vehicle orderly charging valley regulation potential evaluation method provided in the above embodiment belong to the same inventive concept, and the technical details not described in the embodiment can be referred to the above embodiment, and the embodiment has the same beneficial effects as the above embodiment.

[0056] Through the above description of the embodiments, those skilled in the art can clearly understand that the present application can be realized by means of software and necessary general hardware, and of course can also be realized by hardware, but in many cases the former is a better embodiment. Based on such understanding, the technical solutions of the present application or the parts that make contributions to the prior art can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a floppy disk, a read-only memory (ROM), a random access memory (RAM), a FLASH, a hard disk or an optical disk, etc., including a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods of various embodiments of the present application.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit the present application, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. A method for evaluating the peak-shaving potential of orderly charging of electric vehicles, characterized by: include, Collect power data and evaluate the duration of off-peak and peak-load periods for orderly charging of electric vehicles based on historical operating data; Calculate the activity of charging piles and classify charging pile types according to the activity of charging piles, including active charging piles and inactive charging piles; Calculate the distribution characteristics of the charging capacity of active charging piles and evaluate the peak load regulation potential of active charging piles; Calculate the distribution characteristics of the charging capacity of inactive charging piles and evaluate the peak load regulation potential of inactive charging piles; Evaluate the off-peak peak-shaving potential of charging pile types and calculate the off-peak peak-shaving potential of orderly charging of electric vehicles.

2. The method for evaluating the peak-shaving potential of orderly charging of electric vehicles according to claim 1, characterized in that: The power supply data includes statistics on the peak-shaving of conventional power supplies and the peak-shaving of regulated power supplies; The duration of the off-peak peak-shaving period for evaluating the orderly charging participation of electric vehicles includes the duration of the off-peak peak-shaving period on any operating day, that is, the duration of the paid peak-shaving of conventional power sources and the peak-shaving of regulated power sources, which is expressed as: ， in, 、 They are the duration of the off-peak period on the operating day, the duration of the paid peak-shaving of conventional power supply, and the duration of the peak-shaving of regulated power supply; Count the duration of the valley peak-shaving period on each operating day of historical data for no less than 1 year, and sort them from low to high according to the duration. Use the maximum and minimum values ​​of the valley peak-shaving period as the limit, and divide them into no less than 10 intervals with equal intervals. Count the number of valley peak-shaving period occurrences in each interval, and count the distribution characteristics of the valley peak-shaving period duration. Evaluate the expected value of the duration of the off-peak and peak-shaving period, that is, obtain the median of the interval with the largest number of occurrences of the duration distribution of the off-peak and peak-shaving period.

3. The method for evaluating the peak-shaving potential of orderly charging of electric vehicles according to claim 2, characterized in that: The calculation of charging pile activity includes defining the activity of any charging pile as the ratio of the number of times electric vehicles are charged during off-peak hours to the number of days within the statistical period: ， in, Represents the activity of charging pile c, 、 are the number of days and total days with low charging demand during the statistical period of charging pile c, respectively; When the charging pile activity is higher than the charging pile activity limit, it is defined as an active charging pile; When the activity level of a charging pile is lower than the activity level limit, it is defined as an inactive charging pile.

4. The method for evaluating the peak-shaving potential of orderly charging of electric vehicles according to claim 3, characterized in that: The distribution characteristics of the charging amount of the active charging piles include counting the low-valley charging amount of the active charging piles on each operating day for at least one year and sorting them from low to high according to the charging amount; The maximum and minimum charging capacity of active charging piles during off-peak hours are used as limits, and the charging intervals are divided into no less than 10 intervals at equal intervals; Count the number of times charging occurs during the low-valley period in each interval; Calculate the distribution probability of the active charging pile charging amount, and use the corresponding probability of the number of active charging pile charging amounts in each interval as the evaluation result of the distribution probability: ， in, Represents the probability of low charging amount in interval i of active charging pile pc, 、 They are the number of occurrences and statistics of low-valley charging in interval i of the active charging pile pc; Calculate the probability of low-valley charging capacity distribution of active charging piles: ， in, Represents the probability of low-valley charging capacity distribution of active charging pile PCs, 、 … The probability of low charging in the first interval, second interval, ..., NPC interval of the active charging pile pc is shown in order; For active charging pile PC low valley charging capacity, 、 … They are the interval dividing values ​​of the first interval, the second interval, and the NPC interval of the active charging pile pc, respectively. NPC is the number of interval divisions of the low-valley charging amount of the active charging pile pc.

5. The method for evaluating the peak-shaving potential of orderly charging of electric vehicles according to claim 4, characterized in that: The evaluation of the off-peak peak-shaving potential of the active charging pile includes calculating the maximum charging amount corresponding to the expected duration of the off-peak peak-shaving period, that is, the product of the expected duration of the off-peak peak-shaving period and the maximum charging power of the active charging pile: ， in, The expected value of the peak load period of the active charging pile PC corresponds to the maximum charging capacity. The maximum charging power of the active charging pile pc, The expected duration of the off-peak and peak-load period; Calculate the peak-shaving capacity of active charging piles in the off-peak period, that is, the peak-shaving capacity under the corresponding off-peak charging volume; If the off-peak charging amount is lower than the maximum charging amount corresponding to the expected duration of the off-peak peak-shaving period, the current peak-shaving potential is the ratio of the off-peak charging amount to the expected duration of the off-peak peak-shaving period; If the off-peak charging amount exceeds the maximum charging amount corresponding to the expected duration of the off-peak peak-shaving period, the current peak-shaving potential is the maximum charging power corresponding to the current charging pile; The peak load regulation capability of active charging piles is expressed as: ， in, Represents the peak-shaving capability of active charging pile PC; Evaluate the peak-shaving potential of active charging piles during off-peak hours. That is, the expected peak-shaving capacity under different off-peak charging amounts is: ， in, Represents the peak load potential of active charging pile PC, 、 They are the interval dividing values ​​of the first interval and the NPC interval of the active charging pile pc, NPC is the number of interval divisions of the low-valley charging capacity of the active charging pile pc, yes Differential element when performing integration.

6. The method for evaluating the peak-shaving potential of orderly charging of electric vehicles according to claim 4, characterized in that: The distribution characteristics of the charging amount of the inactive charging piles include counting the low-valley charging amount of the inactive charging piles on each operating day for at least one year and sorting them from smallest to largest; The maximum and minimum charging capacity of inactive charging piles during off-peak hours are used as limits, and the charging intervals are divided into no less than 10 intervals at equal intervals; Count the number of times the battery is charged during the off-peak period in each interval. If the battery is not charged during the current operation day, it will not be included in the statistics. The probability of the number of times an inactive charging pile is charged in each interval is used as the evaluation result of the distribution probability, and the probability of the low-valley charging amount distribution of the inactive charging pile is calculated; Calculate the maximum charging capacity corresponding to the expected duration of the off-peak period, which is the product of the expected duration of the off-peak period and the maximum charging power of the inactive charging pile; Calculate the off-peak peak-shaving capacity of an inactive charging pile, which is the peak-shaving capacity corresponding to the off-peak charging volume, the same as that of an active charging pile; Evaluate the peak-shaving potential of inactive charging piles during off-peak hours, that is, the expected value of peak-shaving capacity under different off-peak charging amounts. The evaluation of the peak-shaving potential of inactive charging piles during off-peak hours takes into account the activity level and is expressed as: ， in, Represents the peak load potential of inactive charging piles NPC, The activity level of inactive charging station NPCs; Represents the low-valley charging capacity distribution probability of inactive charging pile NPCs, Represents the peak-shaving capacity of the inactive charging pile NPC. The low-valley charging capacity of the inactive charging pile NPC. 、 They are the interval demarcation values ​​of the first interval and the NNPC interval of the inactive charging pile NPC, respectively. NNPC is the number of interval divisions of the low-valley charging capacity of the inactive charging pile pc. is the integration variable The differential of represents the valley charge amount for inactive charging piles Differential element when performing integration.

7. The method for evaluating the peak-shaving potential of orderly charging of electric vehicles according to claim 4, characterized in that: The calculation of the off-peak load regulation potential of orderly charging of electric vehicles includes evaluating the off-peak load regulation potential of orderly charging of electric vehicles, which is expressed as the sum of the off-peak load regulation potentials of all active charging piles and inactive charging piles: ， in, Provide peak load regulation potential for orderly charging of electric vehicles. 、 They are the number of active charging piles and inactive charging piles respectively.

8. A system for evaluating the potential of electric vehicle orderly charging during valley peak-shaving, using the method for evaluating the potential of electric vehicle orderly charging during valley peak-shaving according to any one of claims 1 to 7, characterized in that: include: Off-peak peak-shaving period assessment module, charging pile classification module, charging pile off-peak peak-shaving potential assessment module, electric vehicle orderly charging off-peak peak-shaving potential assessment module; The valley peak-shaving period evaluation module collects power supply data and evaluates the duration of the valley peak-shaving period in which electric vehicles are charged in an orderly manner based on historical operation data; The charging pile classification module calculates the activity of the charging piles and classifies the charging pile types according to the activity of the charging piles, including active charging piles and inactive charging piles; The charging pile valley peak-shaving potential evaluation module calculates the distribution characteristics of the charging amount of active charging piles and evaluates the valley peak-shaving potential of active charging piles; calculates the distribution characteristics of the charging amount of inactive charging piles and evaluates the valley peak-shaving potential of inactive charging piles; The electric vehicle orderly charging valley peak-shaving potential evaluation module evaluates the valley peak-shaving potential of all charging pile types and calculates the electric vehicle orderly charging valley peak-shaving potential.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method for evaluating the potential of orderly charging of electric vehicles in valley peak-shaving are implemented as described in any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of a method for evaluating the potential for orderly charging of electric vehicles in valley peak-shaving are implemented as described in any one of claims 1 to 7.

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