Method for determining vehicle network interaction performance evaluation information of V2G charging pile comprising built-in 5G communication module charging and discharging management unit

Abstract

The invention relates to a method for determining vehicle network interaction performance evaluation information of a V2G charging pile comprising a built-in 5G communication module charging and discharging management unit, and relates to the technical field of power systems. The method comprises the following steps: in response to a working condition setting instruction, controlling a target charging pile to work under a preset working condition; under the condition that the target charging pile is in the preset working condition, test data corresponding to the target charging pile are obtained; determining different types of performance test results under each preset working condition based on the test data; and performing data analysis on the performance test result to obtain vehicle network interaction performance evaluation information. By adopting the method, the evaluation quality of the vehicle network interaction performance of the V2G charging pile can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of power systems, and particularly to a method for determining vehicle-to-grid interaction performance evaluation information of a V2G charging pile including a charge and discharge management unit with a built-in 5G communication module. Background Art

[0002] With the development of new energy vehicles, Vehicle-to-Grid (V2G) technology has become increasingly important. However, there are many drawbacks in the existing technology. There is no real-time evaluation method for the regulation ability of charging equipment and charging vehicles in vehicle-to-grid interaction, and there is no evaluation of the impact of changes in the performance of charging equipment and vehicle performance on vehicle-to-grid interaction performance, resulting in poor predictability of vehicle-to-grid interaction and inability to more effectively apply charging vehicles for more precise control, leading to very poor vehicle-to-grid interaction effects.

[0003] In short, the current evaluation quality of the vehicle-to-grid interaction performance of V2G charging piles in the power system is poor, resulting in very poor vehicle-to-grid interaction effects. Summary of the Invention

[0004] Based on this, in view of the above technical problems, it is necessary to provide a method, device, computer device, computer-readable storage medium, and computer program product for determining vehicle-to-grid interaction performance evaluation information of a V2G charging pile including a charge and discharge management unit with a built-in 5G communication module, which can improve the evaluation quality of the vehicle-to-grid interaction performance of the V2G charging pile.

[0005] In a first aspect, an embodiment of the present application provides a method for determining vehicle-to-grid interaction performance evaluation information of a V2G charging pile including a charge and discharge management unit with a built-in 5G communication module. The method includes:

[0006] In response to a working condition setting instruction, controlling the target charging pile to work in a preset working condition; the target charging pile is a V2G charging pile set in the power system, and the preset working condition is used to characterize the working state of the target charging pile;

[0007] When the target charging pile is in the preset working condition, obtaining test data corresponding to the target charging pile; the test data is data measured by sensors at different measurement positions in the power system;

[0008] Based on the test data, determining performance test results of different types under each preset working condition;

[0009] Performing data analysis on the performance test results to obtain vehicle-to-grid interaction performance evaluation information; the vehicle-to-grid interaction performance evaluation information is used to characterize the vehicle-to-grid interaction performance of the target charging pile in the power system.

[0010] In one embodiment, the operating condition setting instruction includes a charge and discharge parameter setting instruction, the performance test result includes a charge and discharge setting requirement test result, and determining the performance test results of different types under each of the preset operating conditions based on the test data includes:

[0011] Based on the test data, detecting the execution status of the adjustment strategy of the target charging pile; the execution status of the adjustment strategy is used to characterize whether the target charging pile adjusts the charge and discharge parameters during the actual charge and discharge process;

[0012] According to the execution status of the adjustment strategy of the target charging pile, determining the charge and discharge setting requirement test result.

[0013] In one embodiment, the operating condition setting instruction includes a charge and discharge switching instruction, the performance test result includes a charge and discharge switching index test result, and determining the performance test results of different types under each of the preset operating conditions based on the test data includes:

[0014] Based on the test data, determining the switching time; the switching time is the time from the sending of the charge and discharge switching instruction to the successful switching;

[0015] According to the switching time and the preset switching standard information, determining the charge and discharge switching index test result.

[0016] In one embodiment, the operating condition setting instruction includes a discharge power setting instruction, the performance test result includes an active power control function test result, and determining the performance test results of different types under each of the preset operating conditions based on the test data includes:

[0017] Based on the test data, determining the actual output power of the target charging pile at different set power values; the set power value is different power values greater than the rated power value set by the discharge power setting instruction;

[0018] Calculating the active power error between the different set power values and the actual output power corresponding to the different set power values, and determining the active power control function test result according to the active power error.

[0019] In one embodiment, the operating condition setting instruction includes a reactive power setting instruction, the performance test result includes a reactive power regulation function test result, and determining the performance test results of different types under each of the preset operating conditions based on the test data includes:

[0020] Based on the test data, determining the actual output power of the target charging pile at different set reactive power values; the set reactive power value is different power values set by the reactive power setting instruction;

[0021] Based on the test data, determine the reactive power stabilization time; the reactive power stabilization time is the time from issuing the reactive power setting instruction to the actual output of the target charging pile reaching the stable reactive power value.

[0022] Calculate the reactive power error between the different set reactive power values and the actual output reactive power corresponding to the different set reactive power values, and determine the test result of the reactive power regulation function according to the reactive power error and the reactive power stabilization time.

[0023] In one embodiment, the performance test result includes the power quality test result. Determining the performance test results of different types under each of the preset working conditions based on the test data includes:

[0024] Determine the test indexes of each quality based on the test data; the test indexes of each quality include the DC component test index, the total harmonic distortion rate of current test index, the voltage unbalance degree test index, and the AC power factor test index.

[0025] Determine the power quality test result according to the test indexes of each quality.

[0026] In a second aspect, the present application also provides a device for determining the vehicle-grid interaction performance evaluation information of a V2G charging pile including a charge and discharge management unit with a built-in 5G communication module. The device includes:

[0027] A working condition adjustment module, configured to control the target charging pile to work in a preset working condition in response to a working condition setting instruction; the target charging pile is a V2G charging pile set in a power system, and the preset working condition is used to characterize the working state of the target charging pile.

[0028] A test data acquisition module, configured to acquire the test data corresponding to the target charging pile when the target charging pile is in the preset working condition; the test data is data measured by sensors at different measurement positions in the power system.

[0029] A test result determination module, configured to determine the performance test results of different types under each of the preset working conditions based on the test data.

[0030] A data analysis module, configured to perform data analysis on the performance test results to obtain vehicle-grid interaction performance evaluation information; the vehicle-grid interaction performance evaluation information is used to characterize the vehicle-grid interaction performance of the target charging pile in the power system.

[0031] In a third aspect, the present application also provides a computer device. The computer device includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0032] In response to a working condition setting instruction, control the target charging pile to operate in a preset working condition; the target charging pile is a V2G charging pile set in the power system, and the preset working condition is used to characterize the working state of the target charging pile;

[0033] When the target charging pile is in the preset working condition, obtain the test data corresponding to the target charging pile; the test data is data measured by sensors at different measurement positions in the power system;

[0034] Based on the test data, determine performance test results of different types under each of the preset working conditions;

[0035] Perform data analysis on the performance test results to obtain vehicle-grid interaction performance evaluation information; the vehicle-grid interaction performance evaluation information is used to characterize the vehicle-grid interaction performance of the target charging pile in the power system.

[0036] In a fourth aspect, the present application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program thereon, and when the computer program is executed by a processor, the following steps are implemented:

[0037] In response to a working condition setting instruction, control the target charging pile to operate in a preset working condition; the target charging pile is a V2G charging pile set in the power system, and the preset working condition is used to characterize the working state of the target charging pile;

[0038] When the target charging pile is in the preset working condition, obtain the test data corresponding to the target charging pile; the test data is data measured by sensors at different measurement positions in the power system;

[0039] Based on the test data, determine performance test results of different types under each of the preset working conditions;

[0040] Perform data analysis on the performance test results to obtain vehicle-grid interaction performance evaluation information; the vehicle-grid interaction performance evaluation information is used to characterize the vehicle-grid interaction performance of the target charging pile in the power system.

[0041] In a fifth aspect, the present application also provides a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0042] In response to a working condition setting instruction, control the target charging pile to operate in a preset working condition; the target charging pile is a V2G charging pile set in the power system, and the preset working condition is used to characterize the working state of the target charging pile.

[0043] When the target charging pile is in the preset working condition, obtain the test data corresponding to the target charging pile; the test data is the data measured by sensors at different measurement positions in the power system.

[0044] Based on the test data, determine the performance test results of different types under each preset working condition.

[0045] Conduct data analysis on the performance test results to obtain vehicle-grid interaction performance evaluation information; the vehicle-grid interaction performance evaluation information is used to characterize the vehicle-grid interaction performance of the target charging pile in the power system.

[0046] The method, device, computer device, storage medium, and computer program product for determining the vehicle-grid interaction performance evaluation information of the above V2G charging pile with an in-built 5G communication module charge and discharge management unit first respond to the working condition setting instruction, accurately control the vehicle-grid interaction charging pile set in the power system to make it operate stably in the preset working condition; then, when the target charging pile is in a stable state of the preset working condition, use the sensors at different measurement positions in the power system to comprehensively obtain the test data; further, based on the test data, deeply analyze and determine the performance test results of different types under each preset working condition; finally, conduct professional data analysis on the performance test results to obtain the vehicle-grid interaction performance evaluation information; this embodiment uses specially designed sensors to real-time track the state of two-way energy flow and the efficiency of interaction with the power grid; through data analysis of the test results, the evaluation of the vehicle-grid interaction performance is realized, which is convenient for predicting the type of faults, optimizing the maintenance response plan, reducing the downtime of the charging pile, and can adjust the charging pile settings without interrupting the power grid service, ensuring the energy feedback efficiency, and then can comprehensively evaluate the performance of the charging pile, effectively improve the stability of the power system, improve the utilization efficiency of power resources, improve the evaluation quality of the vehicle-grid interaction performance of the V2G charging pile, and further improve the effect of vehicle-grid interaction. Description of the Drawings

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0048] Figure 1Schematic diagram of the process for determining the vehicle-grid interaction performance evaluation information of a V2G charging pile with a built-in 5G communication module charge and discharge management unit in an embodiment;

[0049] Figure 2 Schematic diagram of the process for determining the vehicle-grid interaction performance evaluation information of a V2G charging pile with a built-in 5G communication module charge and discharge management unit in another embodiment;

[0050] Figure 3 System architecture diagram of the method for determining the vehicle-grid interaction performance evaluation information of a V2G charging pile with a built-in 5G communication module charge and discharge management unit in an embodiment;

[0051] Figure 4 Structural block diagram of the device for determining the vehicle-grid interaction performance evaluation information of a V2G charging pile with a built-in 5G communication module charge and discharge management unit in an embodiment;

[0052] Figure 5 Internal structure diagram of a computer device in an embodiment. Detailed implementation manners

[0053] In order to make the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0054] It should be noted that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data that have been authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data need to comply with the relevant laws, regulations and standards of relevant countries and regions.

[0055] In an embodiment, as Figure 1 shown, a method for determining the vehicle-grid interaction performance evaluation information of a V2G charging pile with a built-in 5G communication module charge and discharge management unit is provided. In this embodiment, this method is exemplified by being applied to a terminal. It can be understood that this method can also be applied to a server, and can also be applied to a system including a terminal and a server, and is implemented through the interaction between the terminal and the server. In this embodiment, the method includes the following steps:

[0056] S101, in response to a working condition setting instruction, control the target charging pile to work in a preset working condition.

[0057] Among them, the target charging pile is a V2G charging pile set in the power system. The operating condition setting instruction refers to an instruction for setting a certain operating condition, such as a charge-discharge instruction, a charge-discharge switching instruction, etc. The preset operating condition is used to characterize the working state of the target charging pile. For example, when conducting a charge-discharge switching index test, a preset operating condition can be the operating condition where the charging pile switches from the charging state to the discharging state.

[0058] S102, when the target charging pile is in the preset operating condition, obtain the test data corresponding to the target charging pile.

[0059] Among them, the test data is the data measured by sensors at different measurement positions in the power system. The different measurement positions can be the measurement positions of DC signals and AC signals. Correspondingly, the obtained test data is the sensor data of DC voltage or current, and the sensor data of AC voltage or current.

[0060] S103, determine the performance test results of different types under each preset operating condition based on the test data.

[0061] Among them, the performance test results include charge-discharge test results, active power control function test results, reactive power regulation function test results, and power quality test results.

[0062] S104, conduct data analysis on the performance test results to obtain vehicle-grid interaction performance evaluation information.

[0063] Among them, the vehicle-grid interaction performance evaluation information is used to characterize the vehicle-grid interaction performance of the target charging pile in the power system.

[0064] Exemplarily, the data analysis process includes: summarizing, statistically analyzing, and analyzing the data from modules such as charge-discharge tests, active and reactive power tests, and power quality tests; through in-depth mining of these data, the performance trends, potential problems, and abnormal situations of V2G charging piles can be discovered, providing data support for optimizing the performance and operation and maintenance strategies of charging piles.

[0065] In the method for determining the vehicle-grid interaction performance evaluation information of the above V2G charging pile with a built-in 5G communication module charge and discharge management unit, first, in response to the operating condition setting instruction, precisely control the vehicle-grid interaction charging pile set in the power system to make it operate stably in the preset operating condition; then, when the target charging pile is in a stable state of the preset operating condition, use the sensors at different measurement positions in the power system to comprehensively obtain test data; further, based on the test data, deeply analyze and determine the performance test results of different types under each preset operating condition; finally, conduct professional data analysis on the performance test results to obtain the vehicle-grid interaction performance evaluation information; in this embodiment, specially designed sensors are used to real-time track the state of two-way energy flow and the efficiency of interaction with the power grid; through data analysis of the test results, the evaluation of the vehicle-grid interaction performance is realized, which is convenient for predicting the fault type, optimizing the maintenance response plan, reducing the downtime of the charging pile, and can adjust the charging pile settings without interrupting the power grid service, ensuring the energy feedback efficiency, and then can comprehensively evaluate the performance of the charging pile, effectively improve the stability of the power system, improve the utilization efficiency of power resources, improve the evaluation quality of the vehicle-grid interaction performance of the V2G charging pile, and further improve the effect of vehicle-grid interaction.

[0066] In one embodiment, determining the performance test results of different types under each preset operating condition based on the test data includes: detecting the execution status of the adjustment strategy of the target charging pile based on the test data; and determining the test result of the charge and discharge setting requirements according to the execution status of the adjustment strategy of the target charging pile.

[0067] Among them, the operating condition setting instruction includes a charge and discharge parameter setting instruction, the performance test result includes a test result of the charge and discharge setting requirements, and the execution status of the adjustment strategy is used to characterize whether the target charging pile adjusts the charge and discharge parameters during the actual charge and discharge process.

[0068] Among them, the execution status of the adjustment strategy of the target charging pile can be executed and not executed. Specifically, the determination can be: observing through the test data whether the V2G charging pile can dynamically adjust the charge and discharge parameters according to the data provided by the electric vehicle battery management system through the TCU (in-vehicle terminal unit). For example, during the charging process, as the battery power gradually approaches the full state, the charging pile should be able to automatically reduce the charging current to prevent overcharging.

[0069] Among them, when determining the test result of the charge and discharge setting requirements, the judgment criterion of the test result is: the V2G charging pile can accurately execute the charge and discharge instructions and dynamically adjust the charge and discharge parameters according to the instructions of the BMS and the orderly charging management system.

[0070] Exemplarily, the test steps for the charge and discharge setting requirements corresponding to this embodiment include: sending different charge and discharge instructions to the vehicle-grid interaction ability evaluation module of the V2G charging pile through the cloud platform. The vehicle-grid interaction ability evaluation module transfers the instructions to the off-vehicle charging controller. Monitor the data of the AC voltage / current sensor and the DC voltage / current sensor. Check whether the V2G charging pile performs charge and discharge operations according to the instructions, and can dynamically adjust the charge and discharge parameters according to the data provided by the electric vehicle battery management system (through the TCU).

[0071] More specifically, the instruction sending process includes: taking the cloud platform as the control end and sending instructions containing different charge and discharge parameters (such as charging current, charging voltage, discharge power, etc.) to the vehicle-grid interaction ability evaluation module in the V2G charging pile; the instruction transfer and processing process includes: after receiving the instruction, the vehicle-grid interaction ability evaluation module transfers it to the off-vehicle charging controller. The off-vehicle charging controller coordinates the work of each component in the V2G charging pile according to the received instruction; the data monitoring process includes: during the charge and discharge process, monitor the data of the AC voltage / current sensor (located on the grid input side) and the DC voltage / current sensor (located on the connection side between the DC charger and the electric vehicle). These sensors obtain the changes in voltage and current in real time.

[0072] In this embodiment, charge and discharge parameter setting instructions are used to set the working conditions, and the test results of the charge and discharge setting requirements are determined by detecting the execution status of the adjustment strategy of the target charging pile, providing a specific test process for the charge and discharge setting requirements, and providing data support for the subsequent evaluation of the vehicle-grid interaction performance.

[0073] In one embodiment, different types of performance test results under each preset working condition are determined based on the test data, including: determining the switching time based on the test data; and determining the test results of the charge and discharge switching index according to the switching time and the preset switching standard information.

[0074] Among them, the working condition setting instruction includes the charge and discharge switching instruction, and the performance test result includes the test result of the charge and discharge switching index.

[0075] Among them, the switching time is the time from the sending of the charge and discharge switching instruction to the successful switching. Specifically, after the instruction is sent, time measurement is carried out, and the data collected by the monitored DC voltage / current sensor is used to accurately measure the time required for the V2G charging pile to switch from the charging state to the discharging state, or from the discharging state to the charging state.

[0076] Among them, when determining the test results of the charge and discharge switching index, the judgment criterion for the test results is: after receiving the charge and discharge switching instruction, the charge and discharge conversion time of the V2G charging pile should not be greater than 100 ms.

[0077] Exemplarily, the test steps for the charge-discharge switching index test corresponding to this embodiment include: sending a charge-discharge switching command to the vehicle-grid interaction ability evaluation module of the V2G charging pile through the cloud platform. Measuring the charge-discharge conversion time by using the data of the monitored DC voltage / current sensor. Specifically, the command sending process includes: sending a charge and discharge switching command to the vehicle-grid interaction ability evaluation module of the V2G charging pile through the operation cloud platform.

[0078] In this embodiment, the operating conditions are set by using the charge-discharge parameter setting command, and the charge-discharge switching index test result is determined by the switching time and the preset switching standard information, providing a specific charge-discharge switching index test process and providing data support for the subsequent evaluation of the vehicle-grid interaction performance.

[0079] In one embodiment, determining the performance test results of different types under each preset operating condition based on the test data includes: determining the actual output power of the target charging pile at different set power values based on the test data; calculating the active power error between different set power values and the actual output power corresponding to different set power values, and determining the active power control function test result according to the active power error.

[0080] Among them, the operating condition setting command includes a discharge power setting command, and the performance test result includes an active power control function test result.

[0081] Among them, the set power value is different power values greater than the rated power value set by the discharge power setting command. For example, the set discharge power needs to be 20% or more of the rated power. For example, different discharge power values such as 20%, 50%, 80% can be set respectively.

[0082] Among them, when determining the active power control function test result, the judgment standard of the test result is: for any situation where the set discharge rated power is 20% or more, the error between the actual output power of the V2G charging pile and the set power should not exceed ±5%.

[0083] Exemplarily, the test steps for the active power control function test corresponding to this embodiment include: setting different discharge powers of the V2G charging pile in the discharge state through the cloud platform to the vehicle-grid interaction ability evaluation module of the V2G charging pile, and the power is 20% or more of the rated power. Calculating the actual output power by using the data of the monitored DC voltage / current sensor. Checking whether the actual output power error is within ±5%.

[0084] More specifically, the process of power setting includes: sending a discharge power setting instruction to the vehicle-grid interaction capability evaluation module of the V2G charging pile through the cloud platform. The process of power measurement and calculation includes: calculating the actual output power of the V2G charging pile according to the power calculation formula (power = voltage × current) by using the data collected by the monitoring DC voltage / current sensor. The process of error checking includes: comparing the calculated actual output power with the set discharge power to check whether the error between the two is within the range of ±5%.

[0085] In this embodiment, the operating conditions are set by using the charge and discharge parameter setting instruction, and the test result of the active power control function is determined by the active power error, providing a specific test process for the active power control function and providing data support for the subsequent evaluation of the vehicle-grid interaction performance.

[0086] In one embodiment, the performance test results of different types under each preset operating condition are determined based on the test data, including: determining the actual output power of the target charging pile at different set reactive power values based on the test data; determining the reactive power stabilization time based on the test data; calculating the reactive power error between different set reactive power values and the actual output reactive power corresponding to different set reactive power values, and determining the test result of the reactive power regulation function according to the reactive power error and the reactive power stabilization time.

[0087] Among them, the operating condition setting instruction includes a reactive power setting instruction, and the performance test result includes a test result of the reactive power regulation function.

[0088] Among them, the set reactive power value is different power values set by the reactive power setting instruction. The reactive power stabilization time is the time from issuing the reactive power setting instruction to the actual output of the target charging pile reaching the stable reactive power value.

[0089] Among them, when determining the test result of the reactive power regulation function, the judgment criterion for the test result is: the reactive power control accuracy is not greater than ±5%Pn, and the response time is not greater than 1s.

[0090] Exemplarily, the test steps of the reactive power regulation function test (also known as the static reactive power support capability test) corresponding to this embodiment include: setting different reactive power values to the vehicle-grid interaction capability evaluation module of the V2G charging pile through the cloud platform. Measuring the reactive power actually output by the V2G charging pile. Checking whether the reactive power control accuracy is not greater than the tolerance value of ±5%Pn and whether the response time is not greater than 1s.

[0091] Specifically, the process of reactive power setting includes: sending different reactive power setting values to the vehicle-grid interaction capability evaluation module of the V2G charging pile through the operation cloud platform. The process of actual power measurement includes: after the V2G charging pile outputs reactive power according to the setting, using the data collected by the DC / AC voltage / current sensor and calculating the actually output reactive power. The process of accuracy and response time check includes: comparing the measured actual reactive power with the set value, calculating the control accuracy, and checking whether it meets the requirement that the accuracy of reactive power control is not greater than the tolerance value of ±5% Pn. At the same time, record the time from issuing the reactive power setting instruction to the actual output of the V2G charging pile reaching the stable reactive power value, and check whether the response time is not greater than 1 s.

[0092] In this embodiment, the working condition is set by using the reactive power setting instruction, and the test result of the reactive power regulation function is determined by the reactive power error and the reactive power stabilization time, providing a specific test process for the reactive power regulation function and providing data support for the subsequent evaluation of the vehicle-grid interaction performance.

[0093] In one embodiment, the performance test result includes the power quality test result. Based on the test data, different types of performance test results under each preset working condition are determined, including: determining the test indexes of each quality based on the test data; and determining the power quality test result according to the test indexes of each quality.

[0094] Among them, the test indexes of each quality include the DC component test index, the total harmonic distortion rate test index of current, the voltage unbalance degree test index, and the AC power factor test index. The test steps and judgment criteria corresponding to the test results of each quality are as follows:

[0095] (1) Power Quality - DC Component Test

[0096] Test steps: When the V2G charging pile operates at the rated power, measure the DC current component in the AC side current of the charger by monitoring the data of the AC voltage / current sensor. Operating condition setting: Set the V2G charging pile to the rated power operation state. DC component measurement: Use the data of the AC voltage / current sensor to measure and calculate the DC current component in the AC side current of the V2G charging pile.

[0097] Judgment criteria: When the V2G charging pile operates at the power, the DC current component in its AC side current should not exceed 0.5% of its output current rated value.

[0098] (2) Power Quality - Total Harmonic Distortion Rate Test of Current

[0099] Test steps: In the grid-connected operation mode, check the charging and discharging harmonic currents on the AC side of the V2G charging pile by monitoring the data of the AC voltage / current sensors. Operating mode setting: Set the V2G charging pile to the grid-connected operation mode. Harmonic measurement: Measure the charging and discharging harmonic currents on the AC side of the V2G charging pile using the data of the AC voltage / current sensors.

[0100] Judgment criteria: In the grid-connected operation mode, the charging and discharging harmonic currents on the AC side of the V2G charging pile should meet the requirements to ensure that the harmonic content of the grid current is within a reasonable range.

[0101] (3) Power quality - Voltage unbalance test

[0102] Test steps: Measure the voltage unbalance of the V2G charging pile output by monitoring the data of the AC voltage / current sensors.

[0103] Judgment criteria: The voltage unbalance is less than 2%, and does not exceed 4% for a short time.

[0104] (4) Power quality - AC power factor test

[0105] Test steps: When operating in the grid-connected mode and not participating in the system reactive power regulation, set different values of the V2G charging pile output greater than 50% of its rated output through the cloud platform, and measure the average power factor. Operating mode and power setting: Set the V2G charging pile to operate in the grid-connected mode and not participate in the system reactive power regulation. Set different values of the V2G charging pile output greater than 50% of its rated output through the operation cloud platform. Power factor measurement: Calculate the average power factor of the V2G charging pile under the above different power output settings using the data of the AC voltage / current sensors.

[0106] Judgment criteria: When the output is greater than 50% of the rated output, the average power factor is not less than 0.98 (leading or lagging).

[0107] Among them, the power factor refers to the ratio of the active power to the apparent power in an AC circuit. The apparent power is the total power provided by the power supply, which includes both the active power and the reactive power, and reflects the utilization rate of the power supply equipment and the index of line loss. It should be noted that the classification of the power factor adjustment test can be within the power quality test, or can be carried out as a separate test, or can be set in the reactive power test. This application does not limit its specific classification.

[0108] In this embodiment, the power quality test results are determined through the test indexes of various qualities, providing a specific power quality test process and providing data support for the subsequent evaluation of the vehicle-grid interaction performance.

[0109] In another embodiment, such as Figure 2As shown, a method for determining the vehicle-grid interaction performance evaluation information of a V2G charging pile including a built-in 5G communication module charge and discharge management unit is provided, including the following steps:

[0110] S201, in response to a working condition setting instruction, control the target charging pile to work in a preset working condition.

[0111] S202, when the target charging pile is in the preset working condition, obtain the test data corresponding to the target charging pile.

[0112] S203, based on the test data, detect the execution status of the adjustment strategy of the target charging pile; according to the execution status of the adjustment strategy of the target charging pile, determine the test result of the charge and discharge setting requirements.

[0113] S204, based on the test data, determine the switching time; according to the switching time and the preset switching standard information, determine the test result of the charge and discharge switching index.

[0114] S205, based on the test data, determine the active power error and the reactive power error to obtain the test results of the active power control function and the reactive power regulation function.

[0115] S206, based on the test data, determine the test indexes of various qualities; according to the test indexes of various qualities, determine the test result of the power quality.

[0116] S207, perform data analysis on the performance test results to obtain the vehicle-grid interaction performance evaluation information.

[0117] It should be noted that the specific limitations of the above steps can be referred to the specific limitations of the method for determining the vehicle-grid interaction performance evaluation information of a V2G charging pile including a built-in 5G communication module charge and discharge management unit described above, and will not be elaborated here.

[0118] The embodiment of the present application provides a method for determining the vehicle-grid interaction performance evaluation information of a V2G charging pile including a built-in 5G communication module charge and discharge management unit. For the convenience of understanding by those skilled in the art, Figure 3 a system architecture diagram of the method for determining the vehicle-grid interaction performance evaluation information of a V2G charging pile including a built-in 5G communication module charge and discharge management unit is provided. The following refers to Figure 3 , and a specific embodiment is used to describe in detail the method for determining the vehicle-grid interaction performance evaluation information of a V2G charging pile including a built-in 5G communication module charge and discharge management unit. It should be understood that the following description is only an exemplary illustration and not a specific limitation of the application.

[0119] As Figure 3As shown in the figure, the method for determining the vehicle-grid interaction performance evaluation information of the V2G charging pile including the built-in 5G communication module charge and discharge management unit provided by this application, also known as a method for evaluating the vehicle-grid interaction ability of the V2G charging pile including the built-in 5G communication module charge and discharge management unit, can be applied to the vehicle-grid interaction ability evaluation system of the V2G charging pile. The vehicle-grid interaction ability evaluation system of the V2G charging pile consists of a vehicle-grid interaction ability evaluation module of the V2G pile (also known as the V2G intelligent operation and maintenance module) and monitoring AC / DC voltage / current sensors, and realizes the evaluation of the vehicle-grid interaction performance of the device. By monitoring the AC / DC voltage / current sensors, the two-way voltage and current values, active and reactive powers, harmonics, etc. on the AC side and DC side are collected in real time. Through data analysis, the vehicle-grid interaction ability of the V2G charging pile is evaluated.

[0120] Among them, the V2G intelligent operation and maintenance module consists of a charge and discharge test module, an active power control function test module, a reactive power regulation function test module, a power quality test module, a data analysis module, a platform docking module, and a 5G communication module.

[0121] Among them, the charge and discharge test module is mainly responsible for testing the charge and discharge functions of the V2G charging pile. It can simulate different charge and discharge scenarios. By receiving instructions from relevant systems (such as the orderly charging management system), it monitors whether the V2G charging pile can accurately execute the charge and discharge operations, and checks whether it can dynamically adjust parameters according to the battery state during the charge and discharge process.

[0122] Among them, the active power control function test module is used to test the active power control performance of the V2G charger. It can set different discharge power values (20% and above of the rated power), and by accurately measuring the actual output power of the V2G charging pile, it judges whether the error is within the allowable range (±5%).

[0123] Among them, the reactive power regulation function test module is used to comprehensively test the reactive power regulation ability of the V2G charger. It can set different reactive power parameters, and respectively test the static reactive power support ability (check the reactive power control accuracy and response time), and the power factor regulation ability (measure the power factor under specific grid-connected operation conditions).

[0124] Among them, the power quality test module is mainly used to detect the power quality of the V2G charging pile during operation. It can measure the DC component in the AC side current during rated power operation, analyze the charge and discharge harmonic currents on the AC side in the grid-connected operation mode, evaluate the output voltage unbalance degree, and measure the AC power factor under specific grid-connected operation conditions, etc.

[0125] Among them, the data analysis module ( Figure 3(not shown) plays a role in processing and analyzing the data collected by other test modules. It can summarize, statistically analyze, and analyze the data from modules such as charge and discharge tests, active and reactive power tests, and power quality tests. By deeply mining this data, the performance trends, potential problems, and abnormal situations of V2G charging piles can be discovered, providing data support for optimizing the performance and operation and maintenance strategies of charging piles.

[0126] Among them, the platform docking module ( Figure 3 not shown) is mainly responsible for the connection and data interaction between the V2G intelligent operation and maintenance module and the cloud platform. It ensures that the intelligent operation and maintenance module can accurately receive instructions and parameter settings from the external platform and timely and accurately feedback the test results and relevant data to the cloud platform.

[0127] Among them, the 5G communication module ( Figure 3 not shown) provides high-speed, low-latency, and stable communication guarantee for the V2G intelligent operation and maintenance module. It can quickly transmit data such as test instructions, data acquisition information, and operation and maintenance control feedback. During the vehicle-grid interaction process of V2G charging piles, the 5G communication module can ensure real-time communication between all links, supporting remote operation and monitoring.

[0128] The embodiment of the present application provides a method for determining the vehicle-grid interaction performance evaluation information of a V2G charging pile including a built-in 5G communication module charge and discharge management unit, and proposes a vehicle-grid interaction ability evaluation system and method specifically designed for V2G (Vehicle to Grid) charging piles. This system realizes the real-time vehicle-grid interaction ability evaluation of V2G charging piles through sensing technology and data analysis methods. This system is specifically designed to evaluate the vehicle-grid interaction ability and performance of V2G charging piles and electric vehicles, promoting the development of vehicle-grid interaction technology and the construction of vehicle-grid interaction systems.

[0129] The embodiment of the present application provides a method for determining the vehicle-grid interaction performance evaluation information of a V2G charging pile including a built-in 5G communication module charge and discharge management unit, in terms of targeted health monitoring. Different from ordinary DC charging piles, V2G charging piles need to monitor the stability of bidirectional current and voltage, and use specially designed sensors to real-time track the state of bidirectional energy flow and the efficiency of interaction with the power grid; in terms of predictive maintenance of bidirectional energy flow, by machine learning to analyze the operation data of V2G charging piles, predict the possible failure types under high load and frequent switching modes, optimize the maintenance response plan, and reduce the downtime of charging piles; in terms of remote diagnosis and optimization, aiming at the specific technical requirements of V2G, the system supports remote diagnosis and parameter optimization, and can adjust the charging pile settings without interrupting the power grid service to ensure the energy feedback efficiency.

[0130] It should be understood that although the steps in the flowcharts involved in the above-described embodiments are shown in sequence according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless specifically stated herein, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-described embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or steps or stages in other steps.

[0131] Based on the same inventive concept, an embodiment of the present application further provides a determining device for the vehicle-to-grid interaction performance evaluation information of a V2G charging pile including a built-in 5G communication module charge and discharge management unit for implementing the method for determining the vehicle-to-grid interaction performance evaluation information of the V2G charging pile including a built-in 5G communication module charge and discharge management unit as described above. The solution provided by this device for solving problems is similar to the solution described in the above method. Therefore, the specific limitations in one or more embodiments of the determining device for the vehicle-to-grid interaction performance evaluation information of a V2G charging pile including a built-in 5G communication module charge and discharge management unit provided below can refer to the limitations for the method for determining the vehicle-to-grid interaction performance evaluation information of a V2G charging pile including a built-in 5G communication module charge and discharge management unit in the above text, and will not be repeated here.

[0132] In one embodiment, as Figure 4 shown, a determining device for the vehicle-to-grid interaction performance evaluation information of a V2G charging pile including a built-in 5G communication module charge and discharge management unit is provided, including: a working condition adjustment module 401, a test data acquisition module 402, a test result determination module 403, and a data analysis module 404, where:

[0133] The working condition adjustment module 401 is configured to control the target charging pile to work in a preset working condition in response to a working condition setting instruction; the target charging pile is a V2G charging pile set in the power system, and the preset working condition is used to characterize the working state of the target charging pile;

[0134] The test data acquisition module 402 is configured to acquire the test data corresponding to the target charging pile when the target charging pile is in the preset working condition; the test data is data measured by sensors at different measurement positions in the power system;

[0135] The test result determination module 403 is configured to determine different types of performance test results under each preset working condition based on the test data;

[0136] A data analysis module 404 is configured to perform data analysis on the performance test results to obtain vehicle-grid interaction performance evaluation information, which is used to characterize the vehicle-grid interaction performance of the target charging pile in the power system.

[0137] In one embodiment, the device is configured to: detect the execution status of the adjustment strategy of the target charging pile based on the test data, where the execution status of the adjustment strategy is used to characterize whether the target charging pile adjusts the charging and discharging parameters during the actual charging and discharging process; and determine the test result of the charging and discharging setting requirements according to the execution status of the adjustment strategy of the target charging pile.

[0138] In one embodiment, the device is configured to: determine the switching time based on the test data, where the switching time is the time between the sending of the charging and discharging switching instruction and the successful switching; and determine the test result of the charging and discharging switching index according to the switching time and the preset switching standard information.

[0139] In one embodiment, the device is configured to: determine the actual output power of the target charging pile at different set power values based on the test data, where the set power value is different power values greater than the rated power value set by the discharge power setting instruction; calculate the active power error between the different set power values and the corresponding actual output power, and determine the test result of the active power control function according to the active power error.

[0140] In one embodiment, the device is configured to: determine the actual output power of the target charging pile at different set reactive power values based on the test data, where the set reactive power value is different power values set by the reactive power setting instruction; determine the reactive power stabilization time based on the test data, where the reactive power stabilization time is the time from the issuance of the reactive power setting instruction to the actual output of the target charging pile reaching the stable reactive power value; calculate the reactive power error between the different set reactive power values and the corresponding actual output reactive power, and determine the test result of the reactive power regulation function according to the reactive power error and the reactive power stabilization time.

[0141] In one embodiment, the device is configured to: determine the test indexes of various qualities based on the test data, where the test indexes of various qualities include the DC component test index, the total harmonic distortion rate test index of current, the voltage unbalance degree test index, and the AC power factor test index; and determine the test result of the power quality according to the test indexes of various qualities.

[0142] Each module in the device for determining the vehicle-grid interaction performance evaluation information of the above V2G charging pile including a built-in 5G communication module charge and discharge management unit can be implemented in whole or in part by software, hardware, or a combination thereof. Each of the above modules can be embedded in the processor of the computer device in hardware form or be independent of it, or stored in the memory of the computer device in software form, so that the processor can call and execute the operations corresponding to each of the above modules.

[0143] In one embodiment, a computer device is provided. The computer device can be a terminal, and its internal structure diagram can be as Figure 5 shown. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit, and an input device. Among them, the processor, the memory, and the input / output interface are connected through a system bus, and the communication interface, the display unit, and the input device are connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals in a wired or wireless manner, and the wireless manner can be achieved through WIFI, a mobile cellular network, NFC (Near Field Communication), or other technologies. When the computer program is executed by the processor, it implements a method for determining the vehicle-grid interaction performance evaluation information of a V2G charging pile including a built-in 5G communication module charge and discharge management unit.

[0144] Those skilled in the art can understand that Figure 5 the structure shown in

[0145] is only a block diagram of some structures related to the solution of this application, and does not constitute a limitation on the computer device to which the solution of this application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine some components, or have a different component layout.

[0146] In one embodiment, a computer device is provided, including a memory and a processor. A computer program is stored in the memory, and when the processor executes the computer program, the steps in the above method embodiments are implemented.

[0147] In one embodiment, a computer program product is provided, including a computer program which, when executed by a processor, implements the steps in the above method embodiments.

[0148] Those of ordinary skill in the art can understand that all or part of the processes in the above method embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the above method embodiments. Among them, any reference to a memory, database, or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memories. Non-volatile memories can include read-only memory (ROM), magnetic tapes, floppy disks, flash memories, optical memories, high-density embedded non-volatile memories, resistive random access memories (ReRAM), magnetoresistive random access memories (MRAM), ferroelectric random access memories (FRAM), phase change memories (PCM), graphene memories, etc. Volatile memories can include random access memory (RAM) or external cache memories, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The databases involved in the embodiments provided in the present application can include at least one of relational databases and non-relational databases. Non-relational databases can include distributed databases based on blockchain, etc., without limitation. The processors involved in the embodiments provided in the present application can be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, data processing logics based on quantum computing, etc., without limitation.

[0149] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0150] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A method for determining vehicle-grid interaction performance evaluation information of a V2G charging pile including a built-in 5G communication module charging and discharging management unit, characterized in that: The method comprises: In response to the working condition setting instruction, the target charging pile is controlled to work in a preset working condition; the target charging pile is a V2G charging pile arranged in the power system, and the preset working condition is used to characterize the working state of the target charging pile; When the target charging pile is in the preset working condition, acquiring test data corresponding to the target charging pile; the test data is data measured by sensors at different measurement positions in the power system; Determine different types of performance test results under each of the preset working conditions based on the test data; Data analysis is performed on the performance test results to obtain vehicle-grid interaction performance evaluation information; the vehicle-grid interaction performance evaluation information is used to characterize the vehicle-grid interaction performance of the target charging pile in the power system.

2. The method according to claim 1, characterized in that The operating condition setting instruction includes a charge and discharge parameter setting instruction, the performance test result includes a charge and discharge setting requirement test result, and the different types of performance test results under each of the preset operating conditions are determined based on the test data, including: Based on the test data, detecting the adjustment strategy execution state of the target charging pile; the adjustment strategy execution state is used to indicate whether the target charging pile has adjusted the charging and discharging parameters during the actual charging and discharging process; The charging and discharging setting requirement test result is determined according to the adjustment strategy execution status of the target charging pile.

3. The method according to claim 1, characterized in that The operating condition setting instruction includes a charge-discharge switching instruction, the performance test result includes a charge-discharge switching index test result, and the different types of performance test results under each of the preset operating conditions are determined based on the test data, including: Based on the test data, determining a switching time; the switching time is the time from when the charge-discharge switching instruction is sent to when the switching is successful; The charge-discharge switching index test result is determined according to the switching time and preset switching standard information.

4. The method according to claim 1, characterized in that: The operating condition setting instruction includes a discharge power setting instruction, the performance test result includes an active power control function test result, and the different types of performance test results under each of the preset operating conditions are determined based on the test data, including: Based on the test data, determining the actual output power of the target charging pile at different set power values; the set power value is a different power value set by the discharge power setting instruction that is greater than the rated power value; The active power errors between the different set power values ​​and the actual output powers corresponding to the different set power values ​​are calculated, and the active power control function test result is determined according to the active power error.

5. The method according to claim 1, characterized in that The operating condition setting instruction includes a reactive power setting instruction, the performance test result includes a reactive power regulation function test result, and the different types of performance test results under each of the preset operating conditions are determined based on the test data, including: Based on the test data, determining the actual output power of the target charging pile under different set reactive power values; the set reactive power values ​​are different power values ​​set by the reactive power setting instruction; Based on the test data, determining the reactive power stabilization time; the reactive power stabilization time is the time from issuing the reactive power setting instruction to the actual output of the target charging pile reaching a stable reactive power value; Calculate the reactive power error between the different set reactive power values ​​and the actual output reactive power corresponding to the different set reactive power values, and determine the reactive power regulation function test result according to the reactive power error and the reactive power stabilization time.

6. The method according to claim 1, characterized in that The performance test results include power quality test results, and the determining of different types of performance test results under each of the preset working conditions based on the test data includes: Determine the test indicators of various qualities based on the test data; the test indicators of various qualities include a DC component test indicator, a current total harmonic distortion test indicator, a voltage imbalance test indicator, and an AC power factor test indicator; The power quality test result is determined according to the test indicators of each quality.

7. A device for determining vehicle-grid interaction performance evaluation information of a V2G charging pile including a built-in 5G communication module charging and discharging management unit, characterized in that: The device comprises: A working condition adjustment module, used to control a target charging pile to operate in a preset working condition in response to a working condition setting instruction; the target charging pile is a V2G charging pile arranged in a power system, and the preset working condition is used to characterize the working state of the target charging pile; A test data acquisition module, used for acquiring test data corresponding to the target charging pile when the target charging pile is in the preset working condition; the test data is data measured by sensors at different measurement positions in the power system; A test result determination module, used to determine different types of performance test results under each of the preset working conditions based on the test data; A data analysis module is used to perform data analysis on the performance test results to obtain vehicle-grid interaction performance evaluation information; the vehicle-grid interaction performance evaluation information is used to characterize the vehicle-grid interaction performance of the target charging pile in the power system.

8. 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 according to any one of claims 1 to 6 are implemented.

9. 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 the method according to any one of claims 1 to 6 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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