Construction evaluation method and system for light storage and charging integrated charging station

Abstract

The invention discloses a construction evaluation method and system for a light storage and charging integrated charging station, and relates to the technical field of electric energy storage, and the method comprises the steps: firstly collecting and analyzing the construction data of a target region, and collecting and analyzing the construction data of a construction region of the light storage and charging integrated charging station; operation characterization verification data suitable for the light storage and charging integrated charging station are obtained through screening; after the charging station is put into operation, the operation data of the charging station is continuously monitored, the operation characterization value is calculated and obtained based on the initial operation characterization verification data, and the operation condition of the charging station is optimized, evaluated and prompted, so that it is ensured that the construction of the charging station is matched with the actual operation requirement, the operation efficiency is improved, and the resource configuration is optimized. Therefore, the overall performance of the charging station is improved.

Description

Technical Field

[0001] The present invention relates to the field of electric energy storage technology, and in particular to a method and system for evaluating the construction of a photovoltaic storage and charging integrated charging station. Background Art

[0002] Photovoltaic power generation, as a green and renewable energy source, has gradually become an important direction for the development of new energy with its broad application prospects and continuously decreasing costs. However, photovoltaic power generation is subject to sunshine conditions, and its power generation is intermittent and volatile, requiring a matching energy storage system to balance the supply and demand of electricity. The energy storage system can store excess electricity when the power demand is low, and release it when the demand is peak, so as to smooth the power output, improve the stability of the grid and the reliability of power supply. Therefore, through a comprehensive evaluation of the photovoltaic system, energy storage system and charging equipment, users can be helped to scientifically configure the project system and optimize the performance, ensuring the economy, reliability and sustainability of the integrated photovoltaic storage and charging station.

[0003] Existing technologies, such as the invention patent with announcement number CN109034465B, are a two-layer construction method for charging stations that considers the coupling of charging station site selection and travel path. First, an electric vehicle travel model based on the Monte Carlo simulation method is established, and a two-layer construction model for charging stations is established based on electric vehicle travel data. In the upper model, the impact of charging station site selection on user travel paths is considered, and the site selection of charging stations is carried out with the goal of maximizing the user travel success rate; the lower model first determines the user's optimal travel path based on the site selection of the upper model, and then uses the queue theory with the introduction of the greedy algorithm to determine the capacity, and evaluates all feasible solutions based on the two indicators of charging station construction investment cost and user travel satisfaction to determine the optimal construction plan.

[0004] Existing technologies, such as the invention patent with announcement number CN116307524B, are a method for site selection and construction of electric vehicle charging stations based on improving dynamic user equilibrium. The carbon emission costs generated by electric vehicle owners when traveling are considered when solving traffic flow, including the following steps: S1. Using DBSCAN and Wasserstein distance to generate representative scenarios through historical data to deal with uncertainty factors; S2. Using the IDUE model that considers the carbon emission costs of car owners to calculate traffic flow; S3. Constructing a comprehensive cost function mathematical model that considers travel time cost, charging time cost, carbon emission cost, construction cost, travel failure cost, and operating cost to obtain a construction plan for each scenario; S4. Evaluating the final most robust electric vehicle charging station construction plan.

[0005] In summary, there are certain limitations in the current construction of integrated photovoltaic, storage and charging charging stations. For example, the data comprehensiveness and analysis accuracy in the construction evaluation process of integrated photovoltaic, storage and charging charging stations are insufficient, the monitoring system is imperfect, the optimization suggestions are not specific, and there is a lack of effective feedback. These problems may lead to unnecessary waste of investment, such as over-configuration or under-configuration of photovoltaic and storage equipment, and increase construction costs. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a method and system for evaluating the construction of a photovoltaic, storage and charging integrated charging station, which can effectively solve the problems involved in the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a method for evaluating the construction of an integrated photovoltaic, storage and charging station, comprising collecting and analyzing the construction data of the integrated photovoltaic, storage and charging station construction area, and screening to obtain the operational characterization verification data of the integrated photovoltaic, storage and charging station.

[0008] The operation data of the integrated photovoltaic storage and charging station is monitored and analyzed to obtain the operation characterization value of the integrated photovoltaic storage and charging station.

[0009] Based on the operational characterization values ​​of the integrated photovoltaic, storage and charging charging station, construction optimization evaluation suggestions are provided for the integrated photovoltaic, storage and charging charging station.

[0010] Furthermore, the construction data of the integrated photovoltaic, storage and charging charging station construction area is collected and analyzed, and the specific process is: extracting the construction data of the integrated photovoltaic, storage and charging charging station construction area, wherein the construction data includes the effective land area, the number of charging piles, the average charging efficiency of the charging piles and the total area of ​​photovoltaic panels, and obtaining the construction characterization value of the integrated photovoltaic, storage and charging charging station construction area after processing.

[0011] Furthermore, the screening obtains the operational characterization verification data of the integrated photovoltaic, storage and charging charging station. The specific process is: according to the construction characterization value of the construction area of ​​the integrated photovoltaic, storage and charging charging station, and matching with the operational characterization verification data corresponding to each set construction characterization value interval, the operational characterization verification data of the integrated photovoltaic, storage and charging charging station is obtained.

[0012] Furthermore, the construction characterization value of the construction area of ​​the integrated photovoltaic, storage and charging station is a numerical result obtained by analyzing the construction data of the construction area of ​​the integrated photovoltaic, storage and charging station, which is used to quantitatively evaluate the construction scale of the photovoltaic, storage and charging station.

[0013] Furthermore, the operating data of the integrated photovoltaic storage and charging station is monitored and analyzed, and the specific analysis process is: setting a monitoring cycle, and monitoring the operating data of the integrated photovoltaic storage and charging station during the monitoring cycle, wherein the operating data includes power generation data, energy storage data and charging data.

[0014] The power generation data includes the output peak power of the photovoltaic array, the actual total power generation and the total line loss.

[0015] The energy storage data includes the self-discharge rate, the average response time of the energy storage system and the actual usage capacity of the energy storage system.

[0016] The charging data includes the electric energy input and output of each charging pile and the utilization rate of solar irradiance.

[0017] Furthermore, the operation characterization value of the integrated photovoltaic, storage and charging charging station is obtained by extracting the reference operation data of the integrated photovoltaic, storage and charging charging station stored in the database based on the operation data of the integrated photovoltaic, storage and charging charging station, and obtaining the operation characterization value of the integrated photovoltaic, storage and charging charging station after processing.

[0018] Furthermore, the operational characterization value of the integrated photovoltaic, storage and charging charging station is a numerical result obtained by analyzing and processing the operational data of the integrated photovoltaic, storage and charging charging station, and is used to quantitatively evaluate the overall performance of the integrated photovoltaic, storage and charging charging station in actual operation.

[0019] Furthermore, the construction optimization evaluation prompts of the integrated photovoltaic, storage and charging charging station are provided according to the operation characterization value of the integrated photovoltaic, storage and charging charging station. The specific process is: the operation characterization value of the integrated photovoltaic, storage and charging charging station specifically includes the power generation evaluation value, energy storage evaluation value and charging evaluation value of the integrated photovoltaic, storage and charging charging station.

[0020] The operational characterization verification data of the integrated photovoltaic, storage and charging charging station is extracted, wherein the operational characterization verification data of the integrated photovoltaic, storage and charging charging station includes the power generation assessment threshold of the integrated photovoltaic, storage and charging charging station, the energy storage assessment threshold of the integrated photovoltaic, storage and charging charging station, and the charging assessment threshold of the integrated photovoltaic, storage and charging charging station.

[0021] If the power generation assessment value of the integrated photovoltaic, storage and charging charging station is lower than or equal to the power generation assessment threshold of the integrated photovoltaic, storage and charging charging station, a construction optimization assessment prompt will be given for the power generation of the integrated photovoltaic, storage and charging charging station.

[0022] If the energy storage assessment value of the integrated photovoltaic, storage and charging charging station is lower than or equal to the energy storage assessment threshold of the integrated photovoltaic, storage and charging charging station, a construction optimization assessment prompt will be given for the energy storage of the integrated photovoltaic, storage and charging charging station.

[0023] If the charging assessment value of the integrated photovoltaic, storage and charging charging station is lower than or equal to the charging assessment threshold of the integrated photovoltaic, storage and charging charging station, a construction optimization assessment prompt will be given to the charging of the integrated photovoltaic, storage and charging charging station.

[0024] Furthermore, the construction characterization value of the photovoltaic storage and charging integrated charging station construction area is specifically generated under the following conditions:

[0025]

[0026] In the formula, ω represents the construction characterization value of the construction area of ​​the integrated photovoltaic storage and charging station, S represents the effective land area, t represents the number of charging piles, δ represents the average charging efficiency of the charging piles, τ represents the total area of ​​photovoltaic panels, μ1 represents the construction factor corresponding to the set unit effective land area, μ2 represents the construction factor corresponding to the set unit number of charging piles, μ3 represents the construction factor corresponding to the set unit charging efficiency of the charging pile, and μ4 represents the construction factor corresponding to the set unit photovoltaic panel area.

[0027] The second aspect of the present invention also provides a photovoltaic, storage and charging integrated charging station construction evaluation system, including: a charging station construction data collection and analysis module, which is used to collect and analyze the construction data of the photovoltaic, storage and charging integrated charging station construction area, and screen out the operation characterization verification data of the photovoltaic, storage and charging integrated charging station.

[0028] The charging station operation data monitoring and analysis module is used to monitor and analyze the operation data of the integrated photovoltaic storage and charging station to obtain the operation characterization value of the integrated photovoltaic storage and charging station.

[0029] The optimization and evaluation module is used to provide construction optimization evaluation prompts for the integrated photovoltaic storage and charging station based on the operational characterization value of the integrated photovoltaic storage and charging station.

[0030] The present invention has the following beneficial effects:

[0031] (1) The present invention provides a method and system for evaluating the construction of an integrated photovoltaic, storage and charging charging station. First, the construction data of the target area is collected and analyzed. By collecting and analyzing the construction data of the integrated photovoltaic, storage and charging charging station construction area, operational characterization verification data suitable for the integrated photovoltaic, storage and charging charging station is screened out. After the charging station is put into operation, the operational data of the charging station is continuously monitored. Based on the initial operational characterization verification data, the operational characterization value is calculated and obtained, and the operating status of the charging station is optimized and evaluated and prompted. This helps to ensure that the construction of the charging station matches the actual operational needs, improve operational efficiency, optimize resource allocation, and thus improve the overall performance of the charging station.

[0032] (2) The present invention obtains the operational characterization verification data of the integrated photovoltaic, storage and charging charging station by evaluating the construction characterization values ​​of the construction area of ​​the integrated photovoltaic, storage and charging charging station. Through detailed construction data extraction and processing, the natural resources and environmental conditions of each potential construction area can be accurately evaluated, and the construction characterization values ​​can be matched with the set operational characterization verification data. This helps to ensure that the design of each integrated photovoltaic, storage and charging charging station can make the best use of local natural resources, maximize power generation efficiency and energy storage utilization, reduce construction and operation costs, and thus improve the economic benefits of the integrated photovoltaic, storage and charging charging station.

[0033] (3) The present invention obtains the operational characterization value of the integrated photovoltaic storage and charging charging station by calculation, and by systematically monitoring the data of various aspects of power generation, energy storage and charging. Through scientific monitoring and optimization evaluation, it can maximize the system's power generation and energy storage efficiency, reduce operating costs, improve economic benefits, and fully understand the actual operating conditions of the integrated photovoltaic storage and charging charging station, which is helpful to evaluate the overall performance of the system and the operating efficiency of each subsystem, and effectively improve the accuracy and comprehensiveness of the construction and operation evaluation of the integrated photovoltaic storage and charging charging station.

[0034] (4) The present invention provides construction optimization evaluation prompts for the corresponding system parts by calculating the power generation evaluation value, energy storage evaluation value and charging evaluation value, so as to understand the operating status of the integrated photovoltaic storage and charging station in real time. This real-time performance monitoring helps to find problems in the system in a timely manner and ensure that the system is always in the best operating state. And through specific evaluation prompts, the problem can be quickly located, reducing the time and cost of blind troubleshooting.

[0035] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the method flow of the present invention.

[0037] Figure 2 This is the energy storage evaluation value curve of the integrated photovoltaic storage and charging station of the present invention.

[0038] Figure 3 It is a schematic diagram of the system module of the present invention. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] See also Figure 1As shown, an embodiment of the present invention provides a method and system technical solution for evaluating the construction of an integrated photovoltaic, storage and charging charging station: a method for evaluating the construction of an integrated photovoltaic, storage and charging charging station, comprising collecting and analyzing the construction data of the integrated photovoltaic, storage and charging charging station construction area, and screening to obtain the operation characterization verification data of the integrated photovoltaic, storage and charging charging station.

[0042] The operation data of the integrated photovoltaic storage and charging station is monitored and analyzed to obtain the operation characterization value of the integrated photovoltaic storage and charging station.

[0043] Based on the operational characterization values ​​of the integrated photovoltaic, storage and charging charging station, construction optimization evaluation suggestions are provided for the integrated photovoltaic, storage and charging charging station.

[0044] Specifically, the construction data of the construction area of ​​the integrated photovoltaic, storage and charging station is collected and analyzed. The specific process is: extract the construction data of the construction area of ​​the integrated photovoltaic, storage and charging station, where the construction data includes the effective land area, the number of charging piles, the average charging efficiency of the charging piles and the total area of ​​photovoltaic panels, and the construction characterization value of the construction area of ​​the integrated photovoltaic, storage and charging station is obtained after processing.

[0045] Specifically, the operational characterization verification data of the integrated photovoltaic, storage and charging station is screened and obtained. The specific process is: according to the construction characterization value of the construction area of ​​the integrated photovoltaic, storage and charging station, and matched with the operational characterization verification data corresponding to each set construction characterization value interval, the operational characterization verification data of the integrated photovoltaic, storage and charging station is obtained.

[0046] Specifically, the construction characterization value of the construction area of ​​the integrated photovoltaic, storage and charging station is the numerical result obtained by analyzing the construction data of the construction area of ​​the integrated photovoltaic, storage and charging station, and is used to quantitatively evaluate the construction scale of the photovoltaic, storage and charging station.

[0047] Specifically, the operating data of the integrated photovoltaic storage and charging station is monitored and analyzed. The specific analysis process is: setting a monitoring cycle, and monitoring the operating data of the integrated photovoltaic storage and charging station during the monitoring cycle, wherein the operating data includes power generation data, energy storage data and charging data.

[0048] The power generation data includes the output peak power of the photovoltaic array, the actual total power generation and the total line loss.

[0049] It should be noted that the total line loss refers to the total amount of energy lost during the transmission process due to the presence of electrical components such as resistance, inductance, and capacitance, which results in the conversion of electrical energy into heat or other forms of energy. These losses will cause the consumption of electrical energy and the conversion into heat energy during the transmission process, thereby affecting the transmission efficiency and the stability of the power grid. The total line loss is usually expressed in power (in watts, W).

[0050] The energy storage data includes the self-discharge rate, the average response time of the energy storage system and the actual usage capacity of the energy storage system.

[0051] It should be noted that the response time of the energy storage system refers to the time required for the energy storage system to actually start or stop outputting electrical energy from the time it receives the start or stop signal. In this embodiment, the response time of the energy storage system is the time from sending the control signal to the time when the energy storage system actually starts to output electrical energy. A time interval counter is used to connect the control signal and the energy storage system response point to record the time from sending the control signal to the time when the energy storage system actually starts to output electrical energy. The shorter the average response time of the energy storage system, the greater the flexibility and response capability of the energy storage system, and the faster it can respond to power demand and grid fluctuations. Multiple tests are performed and the average value is finally taken to obtain a more accurate average response time of the energy storage system.

[0052] It should be noted that the actual usage capacity of an energy storage system usually refers to the electrical energy capacity that the energy storage system can actually supply to users or systems, usually in kilowatt-hours (kWh).

[0053] It should be noted that the self-discharge rate refers to the rate at which the energy storage system naturally loses energy when not in use. The ratio of the actually used capacity to its rated capacity indicates that the capacity utilization rate refers to the ratio between the actually used capacity of the energy storage system and its rated capacity.

[0054] The charging data includes the electric energy input and output of each charging pile and the utilization rate of solar irradiance.

[0055] Specifically, the operational characterization value of the integrated photovoltaic, storage and charging charging station is obtained. The specific process is: based on the operational data of the integrated photovoltaic, storage and charging charging station, the reference operational data of the integrated photovoltaic, storage and charging charging station stored in the database is extracted, and the operational characterization value of the integrated photovoltaic, storage and charging charging station is obtained after processing.

[0056] Specifically, the operational characterization value of the integrated photovoltaic, storage and charging charging station is the numerical result obtained by analyzing and processing the operational data of the integrated photovoltaic, storage and charging charging station, and is used to quantitatively evaluate the overall performance of the integrated photovoltaic, storage and charging charging station in actual operation.

[0057] Specifically, construction optimization evaluation prompts are provided for the integrated photovoltaic, storage and charging charging station based on its operational characterization values. The specific process is as follows: the operational characterization values ​​of the integrated photovoltaic, storage and charging charging station specifically include the power generation evaluation value, energy storage evaluation value and charging evaluation value of the integrated photovoltaic, storage and charging charging station.

[0058] The operational characterization verification data of the integrated photovoltaic, storage and charging charging station is extracted, wherein the operational characterization verification data of the integrated photovoltaic, storage and charging charging station includes the power generation assessment threshold of the integrated photovoltaic, storage and charging charging station, the energy storage assessment threshold of the integrated photovoltaic, storage and charging charging station, and the charging assessment threshold of the integrated photovoltaic, storage and charging charging station.

[0059] If the power generation assessment value of the integrated photovoltaic, storage and charging charging station is lower than or equal to the power generation assessment threshold of the integrated photovoltaic, storage and charging charging station, a construction optimization assessment prompt will be given for the power generation of the integrated photovoltaic, storage and charging charging station.

[0060] It should be noted that the specific analysis conditions for the power generation evaluation value of the integrated photovoltaic storage and charging station are as follows:

[0061]

[0062] Among them, G represents the power generation evaluation value of the integrated photovoltaic storage and charging station, W represents the output peak power of the photovoltaic array, ΔW represents the set reference output peak power of the photovoltaic array, F represents the actual total power generation, ΔF represents the set reference total power generation, Q represents the total line loss, ΔQ represents the set defined total line loss, α1 represents the correction factor corresponding to the set output power of the photovoltaic array, α2 represents the correction factor corresponding to the set power generation, and α3 represents the correction factor corresponding to the set total line loss.

[0063] As shown in Table 1, Table 1 is example data of the power generation evaluation value of the integrated photovoltaic storage and charging station, which lists the output peak power of the photovoltaic array, the total line loss and the power generation evaluation value of the integrated storage and charging station.

[0064] Table 1 Example data of power generation evaluation value of integrated photovoltaic storage and charging station

[0065]

[0066] As shown in Table 1, in a specific embodiment, if the correction factor corresponding to the output power of the photovoltaic array is 0.5, the correction factor corresponding to the power generation is 0.3, the reference output peak power of the photovoltaic array is 2000 (kW), the output peak power of the photovoltaic array is 1800 (kW), the total line loss is defined as 300 (kWh), the reference total power generation is 10000 (kWh), the correction factor corresponding to the total line loss is 0.2, the total power generation is expected to be 8000 (kWh), and the power generation evaluation value of the integrated photovoltaic storage and charging station is as shown in the table above. The power generation evaluation value of the integrated photovoltaic storage and charging station is jointly determined by the output peak power of the photovoltaic array, the total line loss, etc. As the total power generation gradually increases, the power generation evaluation value of the integrated photovoltaic storage and charging station will also increase accordingly.

[0067] In a specific embodiment, the correction factor corresponding to the output power of the photovoltaic array has a value range of 0 to 1. The correction factor corresponding to the output power of the photovoltaic array is extracted from a database, and a correction factor mapping set for comprehensively evaluating the output power of the photovoltaic array under the output power conditions of different photovoltaic arrays can be constructed through historical output power data, meteorological monitoring data, and expert evaluation. The real-time output power data of the photovoltaic array is input to obtain the corresponding photovoltaic array output power correction factor from the mapping set.

[0068] In a specific embodiment, the correction factor corresponding to the power generation has a value range of 0 to 1. The correction factor corresponding to the power generation is extracted from a database, and a correction factor mapping set for comprehensively evaluating the power generation under different power generation conditions can be constructed through historical power generation data, meteorological monitoring data, and expert evaluation. The real-time power generation data is input to obtain the corresponding power generation correction factor from the mapping set.

[0069] In a specific embodiment, the correction factor corresponding to the total line loss ranges from 0 to 1. The correction factor corresponding to the total line loss is extracted from a database, and a correction factor mapping set for comprehensively evaluating line losses under different total line loss conditions can be constructed through historical line loss data, operation data, and expert evaluation. The real-time total line loss is input to obtain the corresponding line loss correction factor from the mapping set.

[0070] It should be added that the output peak power of the photovoltaic array, the actual total power generation and the total line loss in this formula do not exist independently. For example, the output peak power of the photovoltaic array determines the maximum power generation capacity of the photovoltaic storage and charging integrated charging station under optimal conditions, and the actual total power generation reflects the actual power generation effect of the photovoltaic storage and charging integrated charging station within a certain period of time. It will be affected by many factors such as the output peak power of the photovoltaic array. The total line loss is an important factor that cannot be ignored in the power generation process. Higher line losses will directly reduce the amount of electricity reaching the end user and affect the overall power generation efficiency. Therefore, the combined effect of these three parameters determines the overall power generation performance of the photovoltaic storage and charging integrated charging station. By accurately evaluating the output peak power, actual total power generation and total line loss of the photovoltaic array, we can fully understand the power generation capacity and efficiency of the photovoltaic storage and charging integrated charging station, and provide a scientific basis for system optimization design, operation management and performance improvement.

[0071] If the energy storage assessment value of the integrated photovoltaic, storage and charging charging station is lower than or equal to the energy storage assessment threshold of the integrated photovoltaic, storage and charging charging station, a construction optimization assessment prompt will be given for the energy storage of the integrated photovoltaic, storage and charging charging station.

[0072] It should be noted that the energy storage evaluation value of the integrated photovoltaic storage and charging station is based on the following specific analysis conditions:

[0073]

[0074] in, It represents the energy storage evaluation value of the integrated photovoltaic storage and charging station, D represents the self-discharge rate, ΔD represents the reference self-discharge rate, T represents the average response time of the energy storage system, ΔT represents the set reference response time of the energy storage system, R represents the actual usage capacity of the energy storage system, ΔR represents the set rated usage capacity of the energy storage system, δ1 represents the correction factor corresponding to the set self-discharge rate, δ2 represents the correction factor corresponding to the set response time, and δ3 represents the correction factor corresponding to the set usage capacity of the energy storage system.

[0075] like Figure 2 As shown, Figure 2 is the energy storage evaluation value curve of the integrated photovoltaic, storage and charging charging station, which represents the energy storage evaluation value curve of the integrated photovoltaic, storage and charging charging station corresponding to the actual usage capacity of different energy storage systems, where the x-axis represents the average response time of the energy storage system, and the y-axis represents the energy storage evaluation value of the integrated photovoltaic, storage and charging charging station. Three different sets of example parameters are defined in the figure, corresponding to different situations of the three curves, represented by solid lines, dotted lines and dot-dashed lines respectively, and the corresponding curve labels are a, b, and c respectively. When the actual usage capacity of the energy storage system is 90, the schematic diagram of the relationship between the average response time of the energy storage system and the energy storage evaluation value of the integrated photovoltaic, storage and charging charging station is shown in curve a. When the actual usage capacity of the energy storage system is 110, the schematic diagram of the relationship between the average response time of the energy storage system and the energy storage evaluation value of the integrated photovoltaic, storage and charging charging station is shown in curve b. When the actual usage capacity of the energy storage system is 130, the schematic diagram of the relationship between the average response time of the energy storage system and the energy storage evaluation value of the integrated photovoltaic, storage and charging charging station is shown in curve c. And as the average response time of the energy storage system gradually increases, the overall height of the energy storage evaluation value of the integrated photovoltaic storage and charging station will decrease accordingly, which reflects the impact of changes in the average response time of the energy storage system on the energy storage evaluation value of the integrated photovoltaic storage and charging station.

[0076] In a specific embodiment, the correction factor corresponding to the self-discharge rate ranges from 0 to 1. The correction factor corresponding to the self-discharge rate is extracted from a database, and a correction factor mapping set for comprehensively evaluating the self-discharge rate under different self-discharge rate conditions can be constructed through historical self-discharge rate data, operating environment data, and expert evaluation. The real-time self-discharge rate is input to obtain the corresponding self-discharge rate correction factor from the mapping set.

[0077] In a specific embodiment, the correction factor corresponding to the response time has a value range between 0 and 1. The correction factor corresponding to the response time is extracted from a database, and a correction factor mapping set for comprehensively evaluating the response time under different response time conditions can be constructed through historical response time data, system load data, and expert evaluation. The corresponding response time correction factor is obtained from the mapping set by inputting the real-time response time.

[0078] In a specific embodiment, the correction factor corresponding to the usage capacity of the energy storage system ranges from 0 to 1. The correction factor corresponding to the usage capacity of the energy storage system is extracted from a database, and a correction factor mapping set for comprehensively evaluating the usage capacity of the energy storage system under different energy storage system conditions can be constructed through historical usage capacity data, system operation data, and expert evaluation. The real-time usage capacity of the energy storage system is input to obtain the corresponding energy storage system usage capacity correction factor from the mapping set.

[0079] It should be added that there is a close correlation between the three parameters of self-discharge rate, average response time of energy storage system and actual use capacity of energy storage system, and they have a significant impact on the energy storage evaluation value of integrated photovoltaic storage and charging station. The self-discharge rate reflects the energy loss of the energy storage system during the period of non-use. A high self-discharge rate will lead to a decrease in the actual use capacity of the energy storage system. The average response time of the energy storage system determines the speed from the receipt of the charging or discharging instruction to the actual execution of the system. A long response time may lead to the failure to supply power or store energy in time during peak load periods, affecting the efficiency of the overall system. The actual use capacity of the energy storage system represents the available power of the system in actual operation, which directly determines the energy storage capacity and discharge time of the system. Therefore, the combined effect of these three parameters affects the energy storage performance and power generation evaluation value of the integrated photovoltaic storage and charging station. By comprehensively analyzing the self-discharge rate, the average response time of the energy storage system and the actual use capacity of the energy storage system, the energy storage quality and operation efficiency of the integrated photovoltaic storage and charging station can be accurately evaluated, providing a scientific basis for system optimization design, operation management and performance improvement.

[0080] If the charging assessment value of the integrated photovoltaic, storage and charging charging station is lower than or equal to the charging assessment threshold of the integrated photovoltaic, storage and charging charging station, a construction optimization assessment prompt will be given to the charging of the integrated photovoltaic, storage and charging charging station.

[0081] It should be noted that the specific analysis conditions for the charging evaluation value of the integrated photovoltaic storage and charging station are as follows:

[0082]

[0083] Among them, IE k Indicates the electric energy input by the kth charging pile, OE krepresents the electric energy output by the kth charging pile, ΔE represents the reference charging efficiency of the charging pile, P represents the utilization rate of solar irradiance, ΔP represents the reference utilization rate of solar irradiance, Indicates the correction factor corresponding to the set charging efficiency, It represents the correction factor corresponding to the utilization rate of the set solar irradiance, k represents the number of each charging pile, k=1,2,3,...,u, and u is the total number of charging piles.

[0084] In a specific embodiment, the correction factor corresponding to the charging efficiency has a value range of 0 to 1. The correction factor corresponding to the charging efficiency is extracted from a database, and a correction factor mapping set for comprehensively evaluating the charging efficiency under different charging efficiency conditions can be constructed through historical charging efficiency data, operating environment data, and expert evaluation. The real-time charging efficiency is input to obtain the corresponding charging efficiency correction factor from the mapping set.

[0085] In a specific embodiment, the correction factor corresponding to the utilization rate of solar irradiance ranges from 0 to 1. The correction factor corresponding to the utilization rate of solar irradiance is extracted from a database, and a correction factor mapping set for comprehensively evaluating the utilization rate of solar irradiance under different utilization rate conditions of solar irradiance can be constructed through historical solar irradiance utilization rate data, meteorological monitoring data, and expert evaluation. The real-time solar irradiance utilization rate is input to obtain the corresponding solar irradiance utilization correction factor from the mapping set.

[0086] It should be added that there is a close correlation between the two parameters of the power output of the charging pile and the utilization rate of solar irradiance in this formula, and they have a significant impact on the charging evaluation value of the integrated photovoltaic storage and charging station. For example, the power output of the charging pile directly reflects the actual working efficiency and performance of the charging pile, while the utilization rate of solar irradiance determines the power generation capacity of the photovoltaic system under different weather conditions. High utilization means that more power output can be obtained under the same solar irradiation conditions, thereby improving the charging efficiency of the charging pile. If the utilization rate of solar irradiance is low, even if the photovoltaic system generates enough power, the actual power used for charging will be reduced. On the contrary, if the utilization rate is high, more photovoltaic power generation energy can be effectively utilized to increase the output power of the charging pile. Therefore, these two parameters work together to determine the charging evaluation value of the integrated photovoltaic storage and charging station. Comprehensive analysis of the power output of the charging pile and the utilization rate of solar irradiance can accurately evaluate the charging performance and operating efficiency of the integrated photovoltaic storage and charging station, providing a scientific basis for system optimization design, operation management and performance improvement.

[0087] Specifically, the construction characterization value of the photovoltaic storage and charging integrated charging station construction area is generated under the following conditions:

[0088] ω=Sqrt[log2(S*μ1+t*μ2+δ*μ3+τ*μ4+1)];

[0089] In the formula, ω represents the construction characterization value of the construction area of ​​the integrated photovoltaic storage and charging station, S represents the effective land area, t represents the number of charging piles, δ represents the average charging efficiency of the charging piles, τ represents the total area of ​​photovoltaic panels, μ1 represents the construction factor corresponding to the set unit effective land area, μ2 represents the construction factor corresponding to the set unit number of charging piles, μ3 represents the construction factor corresponding to the set unit charging efficiency of the charging pile, and μ4 represents the construction factor corresponding to the set unit photovoltaic panel area.

[0090] In a specific embodiment, the construction factor corresponding to the unit effective land area has a value range of 0 to 1. The construction factor corresponding to the unit effective land area is extracted from a database. Through historical land use data, topographic monitoring data and expert evaluation, a mapping set can be constructed to comprehensively evaluate the feasibility, resource utilization efficiency and environmental impact of the construction of the photovoltaic storage and charging integrated charging station by the unit effective land area. The unit effective land area data is input to obtain the corresponding construction factor corresponding to the unit effective land area from the mapping set.

[0091] In a specific embodiment, the construction factor corresponding to the number of charging piles per unit has a value range of 0 to 1. The construction factor corresponding to the number of charging piles per unit is extracted from a database, and a construction factor mapping set for comprehensively evaluating the number of charging piles under different charging pile numbers can be constructed through historical charging pile number data, usage frequency data, and expert evaluation. Input the number of charging piles to obtain the corresponding construction factor of the number of charging piles from the mapping set.

[0092] In a specific embodiment, the construction factor corresponding to the unit charging efficiency of the charging pile has a value range between 0 and 1. The construction factor corresponding to the unit charging efficiency of the charging pile is extracted from the database, and a construction factor mapping set for comprehensively evaluating the charging efficiency under different charging efficiency conditions can be constructed through historical charging efficiency data, ambient temperature data, charging times data, and expert evaluation. The charging efficiency is input to obtain the corresponding charging efficiency construction factor from the mapping set.

[0093] The construction factor corresponding to the unit photovoltaic panel area ranges from 0 to 1. The construction factor corresponding to the unit photovoltaic panel area is extracted from the database. Through historical photovoltaic panel area data, sunlight exposure time data, photovoltaic panel angle adjustment data and expert evaluation, a construction factor mapping set for comprehensive evaluation of photovoltaic panel area under different photovoltaic panel area conditions can be constructed. Input the photovoltaic panel area to obtain the corresponding photovoltaic panel area construction factor from the mapping set.

[0094] It should be added that the effective land area, annual average sunshine duration, vegetation coverage and annual average solar radiation in this formula do not exist independently. For example, the size of the unit effective land area directly affects the layout density and total installed capacity of photovoltaic panels. The effective land area and the total area of ​​photovoltaic panels jointly determine the installed capacity and power generation potential of the system. The number of charging piles and the average charging efficiency of the charging piles directly affect the service capacity and operation efficiency of the charging station. A larger effective land area can accommodate more photovoltaic panels and charging piles, thereby increasing the total installed capacity and power generation potential, which can provide a scientific basis for the optimized design and operation management of the integrated photovoltaic storage and charging charging station to achieve the best construction and operation effect.

[0095] It should be noted that the effective land area refers to the actual land area that can be used to install photovoltaic panels and energy storage facilities. The effective land area directly affects the scale of the project and the installed capacity of the photovoltaic system.

[0096] like Figure 3 As shown, the second aspect of the present invention also provides a photovoltaic, storage and charging integrated charging station construction evaluation system, including: a charging station construction data collection and analysis module, which is used to collect and analyze the construction data of the photovoltaic, storage and charging integrated charging station construction area, and screen out the operation characterization verification data of the photovoltaic, storage and charging integrated charging station.

[0097] The charging station operation data monitoring and analysis module is used to monitor and analyze the operation data of the integrated photovoltaic storage and charging station to obtain the operation characterization value of the integrated photovoltaic storage and charging station.

[0098] The optimization and evaluation module is used to provide construction optimization evaluation prompts for the integrated photovoltaic storage and charging station based on the operational characterization value of the integrated photovoltaic storage and charging station.

[0099] It should be noted that a construction evaluation system for an integrated photovoltaic, storage and charging charging station also includes a database for storing a construction factor corresponding to a unit effective land area, a construction factor corresponding to a unit number of charging piles, a construction factor corresponding to a unit charging efficiency of a charging pile, a construction factor corresponding to a unit photovoltaic panel area, a reference charging efficiency of a charging pile, a reference utilization rate of solar irradiance, a correction factor corresponding to the charging efficiency, a correction factor corresponding to the utilization rate of solar irradiance, a reference self-discharge rate, a reference response time of an energy storage system, a set rated usage capacity of an energy storage system, a correction factor corresponding to the self-discharge rate, a correction factor corresponding to the response time, a correction factor corresponding to the usage capacity of an energy storage system, a reference output peak power of a photovoltaic array, a set reference total power generation, a defined total line loss, a correction factor corresponding to the output power of a photovoltaic array, a correction factor corresponding to the power generation, a correction factor corresponding to the total line loss, a power generation evaluation threshold of an integrated photovoltaic, storage and charging charging station, an energy storage evaluation threshold of an integrated photovoltaic, storage and charging charging station, and a charging evaluation threshold of an integrated photovoltaic, storage and charging charging station.

[0100] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0101] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A method for evaluating the construction of a photovoltaic storage and charging integrated charging station, characterized in that: include: Collect and analyze the construction data of the integrated photovoltaic, storage and charging station construction area, and screen out the operational characterization verification data of the integrated photovoltaic, storage and charging station; Monitor and analyze the operation data of the integrated photovoltaic storage and charging station to obtain the operation characterization value of the integrated photovoltaic storage and charging station; Based on the operational characterization values ​​of the integrated photovoltaic, storage and charging charging station, construction optimization evaluation suggestions are provided for the integrated photovoltaic, storage and charging charging station.

2. According to claim 1, a method for evaluating the construction of a photovoltaic storage and charging integrated charging station is characterized in that: The specific process of collecting and analyzing the construction data of the photovoltaic storage and charging integrated charging station construction area is as follows: The construction data of the construction area of ​​the integrated photovoltaic, storage and charging charging station is extracted, where the construction data includes the effective land area, the number of charging piles, the average charging efficiency of the charging piles and the total area of ​​photovoltaic panels. After processing, the construction characterization value of the construction area of ​​the integrated photovoltaic, storage and charging charging station is obtained.

3. According to claim 1, a method for evaluating the construction of a photovoltaic storage and charging integrated charging station is characterized in that: The screening process obtains the operational characterization verification data of the integrated photovoltaic storage and charging station, and the specific process is as follows: According to the construction characterization value of the construction area of ​​the integrated photovoltaic, storage and charging charging station, it is matched with the operation characterization verification data corresponding to each set construction characterization value interval to obtain the operation characterization verification data of the integrated photovoltaic, storage and charging charging station.

4. According to claim 1, a method for evaluating the construction of a photovoltaic storage and charging integrated charging station is characterized in that: The construction characterization value of the integrated photovoltaic, storage and charging station construction area is a numerical result obtained by analyzing the construction data of the integrated photovoltaic, storage and charging station construction area, and is used to quantitatively evaluate the construction scale of the photovoltaic, storage and charging station.

5. According to claim 1, a method for evaluating the construction of a photovoltaic storage and charging integrated charging station is characterized in that: The operation data of the photovoltaic storage and charging integrated charging station is monitored and analyzed, and the specific analysis process is as follows: A monitoring cycle is set to monitor the operation data of the integrated photovoltaic storage and charging station during the monitoring cycle, wherein the operation data includes power generation data, energy storage data and charging data; The power generation data includes the output peak power of the photovoltaic array, the actual total power generation and the total line loss; The energy storage data includes self-discharge rate, average response time of the energy storage system and actual usage capacity of the energy storage system; The charging data includes the electric energy input and output of each charging pile and the utilization rate of solar irradiance.

6. According to claim 1, a method for evaluating the construction of a photovoltaic storage and charging integrated charging station is characterized in that: The specific process of obtaining the operational characterization value of the integrated photovoltaic storage and charging station is as follows: Based on the operation data of the integrated photovoltaic, storage and charging charging station, the reference operation data of the integrated photovoltaic, storage and charging charging station stored in the database is extracted, and the operation characterization value of the integrated photovoltaic, storage and charging charging station is obtained after processing.

7. According to claim 5, a method for evaluating the construction of a photovoltaic storage and charging integrated charging station is characterized in that: The operational characterization value of the integrated photovoltaic, storage and charging charging station is a numerical result obtained by analyzing and processing the operational data of the integrated photovoltaic, storage and charging charging station, and is used to quantitatively evaluate the overall performance of the integrated photovoltaic, storage and charging charging station in actual operation.

8. According to claim 3, a method for evaluating the construction of a photovoltaic storage and charging integrated charging station is characterized in that: The specific process of providing construction optimization evaluation prompts for the integrated photovoltaic storage and charging station based on the operational characterization value of the integrated photovoltaic storage and charging station is as follows: The operational characterization value of the integrated photovoltaic storage and charging charging station specifically includes the power generation evaluation value, energy storage evaluation value and charging evaluation value of the integrated photovoltaic storage and charging charging station; Extracting the operational characterization verification data of the integrated photovoltaic storage and charging station, wherein the operational characterization verification data of the integrated photovoltaic storage and charging station includes the power generation assessment threshold of the integrated photovoltaic storage and charging station, the energy storage assessment threshold of the integrated photovoltaic storage and charging station, and the charging assessment threshold of the integrated photovoltaic storage and charging station; If the power generation assessment value of the integrated photovoltaic storage and charging charging station is lower than or equal to the power generation assessment threshold of the integrated photovoltaic storage and charging charging station, a construction optimization assessment prompt will be given for the power generation of the integrated photovoltaic storage and charging charging station; If the energy storage evaluation value of the integrated photovoltaic storage and charging station is lower than or equal to the energy storage evaluation threshold of the integrated photovoltaic storage and charging station, a construction optimization evaluation prompt will be issued for the energy storage of the integrated photovoltaic storage and charging station; If the charging assessment value of the integrated photovoltaic, storage and charging charging station is lower than or equal to the charging assessment threshold of the integrated photovoltaic, storage and charging charging station, a construction optimization assessment prompt will be given to the charging of the integrated photovoltaic, storage and charging charging station.

9. According to claim 2, a method for evaluating the construction of a photovoltaic storage and charging integrated charging station is characterized in that: The construction characterization value of the photovoltaic storage and charging integrated charging station construction area is specifically generated under the following conditions: In the formula, ω represents the construction characterization value of the construction area of ​​the integrated photovoltaic storage and charging station, S represents the effective land area, t represents the number of charging piles, δ represents the average charging efficiency of the charging piles, τ represents the total area of ​​photovoltaic panels, μ1 represents the construction factor corresponding to the set unit effective land area, μ2 represents the construction factor corresponding to the set unit number of charging piles, μ3 represents the construction factor corresponding to the set unit charging efficiency of the charging pile, and μ4 represents the construction factor corresponding to the set unit photovoltaic panel area.

10. A photovoltaic storage and charging integrated charging station construction evaluation system, characterized in that: include: The charging station construction data collection and analysis module is used to collect and analyze the construction data of the photovoltaic storage and charging integrated charging station construction area, and screen out the operational characterization verification data of the photovoltaic storage and charging integrated charging station; The charging station operation data monitoring and analysis module is used to monitor and analyze the operation data of the integrated photovoltaic storage and charging station to obtain the operation characterization value of the integrated photovoltaic storage and charging station; The optimization and evaluation module is used to provide construction optimization evaluation prompts for the integrated photovoltaic storage and charging station based on the operational characterization value of the integrated photovoltaic storage and charging station.

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