New energy configuration method and device, computer equipment, readable storage medium and program product

Abstract

The invention relates to a new energy configuration method and device, computer equipment, a computer readable storage medium and a computer program product, relates to the technical field of new energy configuration, and can improve the reliability of new energy configuration. The method comprises the following steps: determining an operation scene of a power grid load center after new energy access and a new energy access transient model; in an operation scene, determining a synchronous stability risk for a power grid load center by using the new energy access transient model, and determining a new energy bearing scale according to the synchronous stability risk; determining a new energy access site in the power grid load center; sorting the new energy access sites after the new energy is accessed according to the new energy access short-circuit ratio and the new energy consumption space to obtain a short-circuit ratio sorting result and a consumption space sorting result; integrating the short-circuit ratio sorting result and the absorption space sorting result to obtain a new energy access sequence; and determining the new energy bearing scale and the new energy access sequence as new energy access configuration.

Description

Technical Field

[0001] The present application relates to the technical field of new energy configuration, and particularly to a new energy configuration method, device, computer device, computer-readable storage medium and computer program product. Background Art

[0002] With the rapid development of new energy technologies, the new energy planning and configuration in urban load centers face many challenges. Most new energy power generation adopts power electronic grid connection, which has fundamental differences from the dynamic characteristics and response characteristics of traditional synchronous generators, resulting in phenomena such as inaccurate new energy grid connection phase locking and unstable grid connection synchronization. The new energy planning and configuration can be determined by using multi-objective optimization algorithms and determining multiple objective functions, such as maximizing new energy power generation benefits and minimizing environmental impacts. However, this method only considers the influence of factors outside the load center, resulting in adverse situations when configuring new energy for urban load centers according to this new energy planning and configuration, making the reliability of urban load centers low. Summary of the Invention

[0003] Based on this, it is necessary to provide a new energy configuration method, device, computer device, computer-readable storage medium and computer program product for the above technical problems.

[0004] In a first aspect, the present application provides a new energy configuration method, including:

[0005] Determine the operation scenario of the grid load center after new energy access and the new energy access transient model; the new energy access transient model is used to simulate the change information of power data in the grid load center after new energy access, and determine the synchronization stability risk based on the change information;

[0006] Under the operation scenario, use the new energy access transient model to determine the synchronization stability risk for the grid load center, and determine the new energy carrying capacity of the grid load center according to the synchronization stability risk;

[0007] Determine the new energy access sites in the grid load center;

[0008] For each new energy access site after new energy access, sort according to the new energy access short-circuit ratio and new energy consumption space to obtain a short-circuit ratio sorting result and a consumption space sorting result;

[0009] Integrate the short-circuit ratio sorting result and the consumption space sorting result to obtain the new energy access order of the new energy access sites;

[0010] Determine the new energy access configuration by using the new energy carrying capacity and the new energy access order.

[0011] In one embodiment, before sorting each new - energy access site after accessing new energy according to the new - energy access short - circuit ratio and the new - energy consumption space to obtain the short - circuit ratio sorting result and the consumption space sorting result, it further includes:

[0012] Determine the short - circuit capacity generated by the new - energy access site when accessing new energy;

[0013] Determine the new - energy capacity accessed by the grid load center, and according to the new - energy capacity, determine the equivalent power input from the new - energy access site to the grid load center after accessing new energy;

[0014] According to the short - circuit capacity and the equivalent power, determine the new - energy access short - circuit ratio of each new - energy access site.

[0015] In one embodiment, before sorting each new - energy access site after accessing new energy according to the new - energy access short - circuit ratio and the new - energy consumption space to obtain the short - circuit ratio sorting result and the consumption space sorting result, it further includes:

[0016] Obtain the first load level of each new - energy access site and the new - energy scale of the currently accessed new energy;

[0017] According to the first load level and the new - energy scale, determine the consumption space of each new - energy access site.

[0018] In one embodiment, in the operation scenario, using the new - energy access transient model to determine the synchronous stability risk for the grid load center, and according to the synchronous stability risk, determining the new - energy carrying scale of the grid load center includes:

[0019] In the operation scenario, use the transient model to simulate different line faults of the grid load center, and calculate the new - energy limit scale of the grid load center corresponding to each different line fault;

[0020] According to multiple new - energy limit scales, determine the new - energy carrying scale of the grid load center.

[0021] In one embodiment, determining the operation scenario of the grid load center after accessing new energy includes:

[0022] Determine the operation attributes of the grid load center; the operation attributes include the second load level, the number of power generation units, and the new - energy output level;

[0023] Based on the expected operation problems of the power grid load center after the access of new energy, determine the operation situation data under the operation attributes, and construct an operation scenario of the power grid load center after the access of new energy based on the operation situation data.

[0024] In one embodiment, the new energy access sites include a first new energy access site where new energy has been accessed and a second new energy access site where new energy has not been accessed;

[0025] The integration of the short-circuit ratio sorting result and the accommodation space sorting result to obtain the new energy access order of the new energy access sites includes:

[0026] Obtain the preset weights corresponding to the new energy access short-circuit ratio and the new energy accommodation space respectively;

[0027] Based on the preset weights, perform weighted integration on the accommodation space sorting result and the short-circuit ratio sorting result corresponding to the first new energy access site to obtain the first new energy access order corresponding to the first new energy access site;

[0028] Based on the preset weights, perform weighted integration on the accommodation space sorting result and the short-circuit ratio sorting result corresponding to the second new energy access site to obtain the second new energy access order corresponding to the second new energy access site;

[0029] Determine the new energy access order of each new energy access site according to the first new energy access order and the second new energy access order.

[0030] In a second aspect, the present application also provides a new energy configuration device, including:

[0031] An operation scenario and transient model determination module, configured to determine the operation scenario of the power grid load center after the access of new energy and the new energy access transient model; the new energy access transient model is used to simulate the change information of the power data of the power grid load center after the access of new energy, and determine the synchronous stability risk based on the change information;

[0032] A new energy carrying capacity determination module, configured to determine the synchronous stability risk of the power grid load center by using the new energy access transient model under the operation scenario, and determine the new energy carrying capacity of the power grid load center according to the synchronous stability risk;

[0033] A new energy access site determination module, configured to determine the new energy access sites in the power grid load center;

[0034] A new energy access site sorting module, which is used to sort each new energy access site after new energy access according to the new energy access short-circuit ratio and the new energy consumption space, so as to obtain a short-circuit ratio sorting result and a consumption space sorting result;

[0035] A new energy access order integration module, which is used to integrate the short-circuit ratio sorting result and the consumption space sorting result to obtain the new energy access order of the new energy access site;

[0036] A new energy access configuration determination module, which is used to determine the new energy access scale and the new energy access order as the new energy access configuration.

[0037] In a third aspect, the present application also provides a computer device, including a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0038] Determine the operation scenario of the grid load center after new energy access and the new energy access transient model; the new energy access transient model is used to simulate the change information of the power data of the grid load center after new energy access, and determine the synchronous stability risk based on the change information;

[0039] Under the operation scenario, use the new energy access transient model to determine the synchronous stability risk of the grid load center, and determine the new energy bearing scale of the grid load center according to the synchronous stability risk;

[0040] Determine the new energy access sites in the grid load center;

[0041] Sort each new energy access site after new energy access according to the new energy access short-circuit ratio and the new energy consumption space, so as to obtain a short-circuit ratio sorting result and a consumption space sorting result;

[0042] Integrate the short-circuit ratio sorting result and the consumption space sorting result to obtain the new energy access order of the new energy access site;

[0043] Determine the new energy access scale and the new energy access order as the new energy access configuration.

[0044] In a fourth aspect, the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0045] Determine the operation scenario of the grid load center after new energy access and the new energy access transient model; the new energy access transient model is used to simulate the change information of the power data of the grid load center after new energy access, and determine the synchronous stability risk based on the change information;

[0046] Under the described operating scenario, the new - energy access transient model is used to determine the synchronous stability risk for the grid load center, and based on the synchronous stability risk, the new - energy carrying capacity of the grid load center is determined;

[0047] Determine the new - energy access sites in the grid load center;

[0048] For each new - energy access site after new - energy access, sort them according to the new - energy access short - circuit ratio and new - energy consumption space to obtain the short - circuit ratio sorting result and the consumption space sorting result;

[0049] Integrate the short - circuit ratio sorting result and the consumption space sorting result to obtain the new - energy access order of the new - energy access sites;

[0050] Determine the new - energy access configuration by using the new - energy carrying capacity and the new - energy access order.

[0051] In a fifth aspect, the present application also provides a computer program product, including a computer program, which when executed by a processor implements the following steps:

[0052] Determine the operating scenario and the new - energy access transient model after new - energy access for the grid load center; the new - energy access transient model is used to simulate the change information of power data in the grid load center after new - energy access, and based on the change information, determine the synchronous stability risk;

[0053] Under the described operating scenario, the new - energy access transient model is used to determine the synchronous stability risk for the grid load center, and based on the synchronous stability risk, the new - energy carrying capacity of the grid load center is determined;

[0054] Determine the new - energy access sites in the grid load center;

[0055] For each new - energy access site after new - energy access, sort them according to the new - energy access short - circuit ratio and new - energy consumption space to obtain the short - circuit ratio sorting result and the consumption space sorting result;

[0056] Integrate the short - circuit ratio sorting result and the consumption space sorting result to obtain the new - energy access order of the new - energy access sites;

[0057] Determine the new - energy access configuration by using the new - energy carrying capacity and the new - energy access order.

[0058] The above new energy configuration method, device, computer equipment, computer-readable storage medium and computer program product determine the operation scenario of the power grid load center after the access of new energy and the transient model of new energy access; the transient model of new energy access is used to simulate the change information of power data of the power grid load center after the access of new energy, and determine the synchronous stability risk based on the change information; in the operation scenario, the transient model of new energy access is used to determine the synchronous stability risk of the power grid load center, and according to the synchronous stability risk, determine the new energy carrying capacity of the power grid load center; determine the new energy access sites in the power grid load center; for each new energy access site after the access of new energy, sort according to the short-circuit ratio of new energy access and the new energy consumption space to obtain the short-circuit ratio sorting result and the consumption space sorting result; integrate the short-circuit ratio sorting result and the consumption space sorting result to obtain the new energy access order of the new energy access site; determine the new energy carrying capacity and the new energy access order as the new energy access configuration. In this application, the transient model is used to simulate and analyze the operation scenario of the load center after the access of new energy, and determine the synchronous stability risk, and further obtain the new energy carrying capacity that can maintain stable synchronous operation of the power grid after the access of new energy, reducing the risk of system failures; considering multiple factors of the load center itself such as the short-circuit ratio and the consumption space, sorting the new energy access sites improves the optimization degree of new energy access, ensures that the access of new energy maximizes the energy utilization efficiency on the premise of ensuring the stable operation of the power grid, thereby improving the reliability of new energy configuration. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] 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 describing the embodiments of the present application or related technologies. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other related drawings can be obtained without creative efforts based on these drawings.

[0060] Figure 1 It is a schematic flow chart of the new energy configuration method in an embodiment;

[0061] Figure 2 It is a schematic diagram of the model after the new energy accesses the power grid charge center in an embodiment;

[0062] Figure 3 It is a schematic flow chart of determining the new energy access order in an embodiment;

[0063] Figure 4 It is a schematic flow chart of the new energy configuration method in another embodiment;

[0064] Figure 5 It is a structural block diagram of the new energy configuration device in an embodiment;

[0065] Figure 6 It is the internal structure diagram of a computer device in an embodiment. Specific implementation manners

[0066] 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 in conjunction with 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.

[0067] In one embodiment, as Figure 1 shown, a new energy configuration method is provided. In this embodiment, an example is given where this method is 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 realized through the interaction between the terminal and the server. In this embodiment, the method includes the following steps:

[0068] Step S102, determine the operation scenario of the grid load center after the access of new energy and the transient model of new energy access; the transient model of new energy access is used to simulate the change information of power data in the grid load center after the access of new energy, and determine the synchronous stability risk based on the change information.

[0069] Among them, the transient model of new energy access can be used to simulate the transient change process of the power system after the access of new energy (such as photovoltaic, wind power, etc.) to the grid. The access of new energy is often accompanied by the use of power electronic devices, which are fundamentally different from traditional generator sets, resulting in the grid behavior showing characteristics different from those of traditional power sources. The transient model of new energy access focuses on the grid response after the access of new energy, especially the sudden changes such as current and power changes in the initial stage of grid connection. The transient model of new energy access can include an electromagnetic transient model and a mechanical and electrical transient model.

[0070] The synchronous stability risk can be the risk that whether each unit of the grid system can maintain synchronous operation after the grid experiences disturbances (such as new energy access, load fluctuations or system failures). Excessive risk may cause the grid to be unable to maintain a stable state and even result in an out-of-step phenomenon.

[0071] Exemplarily, the terminal simulates the behavior of the power system after the access of new energy by establishing the operation scenario of the grid load center. First, obtain the basic operation data of the grid load center to form a benchmark grid operation scenario. On the basis of this scenario, the power fluctuations brought about after the access of new energy will be taken into account, considering the instantaneous impact of the output change of new energy on parameters such as grid frequency and voltage, and establish a transient model of new energy access, so that the operation characteristics and stability of the grid under different operation scenarios and different scales of new energy access can be clarified.

[0072] In an exemplary embodiment, the terminal conducts electromagnetic transient model modeling on the load center after accessing new energy. This model adopts a three-phase instantaneous value model to accurately simulate the rapid transient processes of new energy devices (such as photovoltaic and wind power) and power electronic devices (such as HVDC transmission equipment). This model can not only accurately simulate the behavior of the power system after new energy access, but also deeply analyze the interaction between new energy and the DC system, especially how it affects the synchronous stability of the power grid in the case of high proportion of new energy access. By modeling the power electronic devices, further analyze the stability problems of new energy and the DC system in a weak grid environment, as well as the resulting broadband oscillation phenomenon.

[0073] The terminal conducts comprehensive modeling of the power grid based on the planned operation mode data of the urban power grid, considering the power demand of the power grid load center, the access situation of traditional power sources (such as thermal power), the status of energy storage devices (such as electrochemical energy storage), etc. Among them, the power source part includes traditional thermal power generation, renewable energy (photovoltaic), static var compensator (SVG), etc. The photovoltaic power generation part, as the new energy part, needs to consider its output volatility and transient response characteristics after connecting to the power grid. As a power electronic device, SVG can quickly respond to the fluctuations of the power grid. The power grid modeling includes AC lines, DC lines (such as conventional DC and flexible DC), etc. The power grid model considers the response characteristics of various power system equipment, especially the instantaneous response of the power grid after new energy access, including the fluctuations of voltage, current and frequency. The load part includes electrolytic aluminum load, electric vehicle charging load, etc. These loads have strong time-variability and adjustability, so their response characteristics have an important impact on the stability of the power grid. The energy storage devices mainly include electrochemical energy storage systems, etc. The energy storage system can release energy during the peak period of the power grid load and charge during the low load period, so as to balance the power grid load. The modeling of the energy storage system needs to consider its charge and discharge rate, energy storage capacity and its mitigation effect on the power grid fluctuations.

[0074] Step S104, in the operation scenario, use the new energy access transient model to determine the synchronous stability risk of the power grid load center, and determine the new energy carrying scale of the power grid load center according to the synchronous stability risk.

[0075] Among them, the new energy carrying scale refers to the maximum new energy capacity that the power grid can accommodate on the premise of ensuring the synchronous stability of the power grid. This capacity can be determined by the synchronous stability of the power grid and other operating parameters to ensure that no unstable situation will be caused when new energy is accessed.

[0076] Exemplarily, in the operating scenario, the terminal conducts simulations through the transient model of new energy access. First, it simulates the short-term response of the power grid load center after new energy access, records the performance of the power grid in the face of load fluctuations, system failures, and fluctuating new energy output, and obtains the simulation results. Through these simulation results, the synchronous stability of the power grid load center can be evaluated, specifically including the fluctuations of the power grid frequency and voltage. According to the simulation results, the synchronous stability risks of the power grid under different disturbances are determined, and based on this, the maximum new energy access capacity that can ensure the stable operation of the power grid, that is, the new energy carrying scale, is calculated. This carrying scale ensures that under power grid failures or other adverse conditions, the access of new energy will not cause the power grid to lose synchronization or be unable to operate synchronously.

[0077] Step S106, determine the new energy access sites in the power grid load center.

[0078] Among them, the new energy access site refers to the selected or proposed location in the power grid as the access point for new energy (such as photovoltaic, wind energy, etc.) equipment to access the power grid.

[0079] Step S108, sort each new energy access site after new energy access according to the new energy access short-circuit ratio and new energy consumption space, and obtain the short-circuit ratio sorting result and the consumption space sorting result.

[0080] Among them, the new energy access short-circuit ratio refers to the ratio of the short-circuit capacity of the new energy access point to the load-carrying capacity of the point and its surrounding power grid for new energy. When a site with a higher short-circuit ratio accesses new energy, the power grid can withstand a larger fault current, and the power grid is more stable. The new energy consumption space refers to the scale of new energy that each site can absorb and digest. A site with a larger consumption space can accept more new energy without causing the power grid to be overloaded or unstable.

[0081] Exemplarily, for the already determined new energy access sites, the terminal first calculates their corresponding new energy access short-circuit ratios, evaluates the impact of the site on the power grid short-circuit capacity when accessing new energy, and sorts according to the calculation results. Next, the new energy consumption space of each site is calculated. Then, all access sites are sorted according to the short-circuit ratio and consumption space respectively, and the short-circuit ratio sorting result and the consumption space sorting result are obtained.

[0082] Step S110, integrate the short-circuit ratio sorting result and the consumption space sorting result to obtain the new energy access order of the new energy access sites.

[0083] Exemplarily, the terminal obtains the short-circuit ratio sorting results and the absorption space sorting results, and sorts each access site respectively. In order to ensure the rationality of the sorting, different weights can be set for the short-circuit ratio and the absorption space according to the specific requirements of the power grid. In the integration process, sites with higher short-circuit ratios and larger absorption spaces are preferentially selected according to the weights to ensure that the stability of the power grid can be effectively guaranteed after the access to new energy, while maximizing the utilization rate of new energy resources.

[0084] Exemplarily, the terminal first selects a site with a higher short-circuit ratio for access according to the principle of short-circuit ratio priority. When the short-circuit ratios are the same, the access order is determined according to the consumption space. For example, the access sites are first sorted according to the short-circuit ratio of each access site. The site with a larger short-circuit ratio means that it has a stronger ability to withstand power grid failures and has a higher priority. When the short-circuit ratio sorting results are the same, the access sites will be sorted according to the consumption space. The site with a larger consumption space can accommodate more new energy and has a higher priority.

[0085] Exemplarily, the terminal adopts a multi-dimensional matrix method to comprehensively evaluate the comprehensive capabilities of the access site by constructing a two-dimensional matrix, combining the two dimensions of short-circuit ratio and absorption space. For example, a two-dimensional matrix is ​​constructed with the short-circuit ratio as the horizontal coordinate and the absorption space as the vertical coordinate. Each access site corresponds to a coordinate point in the matrix according to the value of its short-circuit ratio and absorption space. Fill each point in the matrix according to the short-circuit ratio and absorption space of each site. By analyzing the intersection points in the two-dimensional matrix, the site with priority access can be found. Those points with higher positions in the matrix (that is, both higher short-circuit ratio and larger absorption space) indicate that the site can provide better grid support and greater acceptance capacity when accessed. According to the results of the matrix analysis, the order of access to new energy is obtained. Priority is given to accessing sites located at higher positions in the matrix to ensure that the power grid can accept more new energy and maintain stability when accessing new energy.

[0086] Optionally, the access sequence can be adjusted in real time. As the grid load changes, the short-circuit capacity increases, or other grid configurations are updated, the order of access sites should also be optimized in real time based on the new operating conditions. For example, in some cases, the short-circuit ratio of some access points may increase, or the new energy consumption capacity of some sites may be improved. At this time, the algorithm can be used to recalculate the order to ensure that the access solution is always optimal.

[0087] Optionally, when determining the access order, the scalability, maintainability, and emergency response capabilities of the power grid can be considered. For example, selecting sites close to major transmission lines or with a better redundant system can improve the reliability of the system and the emergency handling capacity. For sites in some remote areas, due to high access costs, difficult facility maintenance, etc., the priority can be appropriately adjusted during sorting to ensure the economy and sustainability of the overall power grid operation.

[0088] Step S112: Determine the new energy carrying scale and the new energy access order as the new energy access configuration.

[0089] In this embodiment, a transient model is used to simulate and analyze the operation scenario of the load center after the new energy is connected, and the synchronous stability risk is determined. Further, the new energy carrying scale at which the power grid can maintain stable synchronous operation after the new energy is connected is obtained, reducing the risk of system failures; considering multiple factors of the load center itself such as the short-circuit ratio and the accommodation space, the sorting of new energy access sites is carried out, improving the optimization degree of new energy access, ensuring that the new energy access maximizes the energy utilization efficiency on the premise of ensuring the stable operation of the power grid, thereby improving the reliability of new energy configuration.

[0090] In an exemplary embodiment, before sorting each new energy access site after the new energy is connected according to the new energy access short-circuit ratio and the new energy accommodation space to obtain the short-circuit ratio sorting result and the accommodation space sorting result, it further includes: determining the short-circuit capacity generated when the new energy access site connects the new energy; determining the new energy capacity connected to the power grid load center, and according to the new energy capacity, determining the equivalent power input from the new energy access site to the power grid load center after the new energy is connected; determining the short-circuit ratio of each new energy access according to the short-circuit capacity and the equivalent power.

[0091] In some embodiments, the framework for the new energy to access the load center can be equivalent to the Figure 2 shown model diagram. When calculating the new energy access short-circuit ratio, it is first necessary to determine the short-circuit capacity generated by each new energy access site after the new energy is connected. The calculation of the short-circuit capacity is completed according to the electrical characteristics of each access point in the power grid, the line impedance, and the equipment capacity. Specifically, first obtain the power grid load, substation equipment capacity, and power supply output characteristics of each site, and combine the existing load flow data of the power grid to calculate the short-circuit capacity of the access point. Next, calculate the actual output of each new energy access site (such as the actual power generation of wind power, photovoltaic, etc.), and then determine the equivalent power provided by this site to the power grid according to the load demand of the power grid and the output characteristics of the new energy. The equivalent power refers to the stable output power of the new energy site after connecting to the power grid, reflecting the actual contribution of this site to the power grid load center.

[0092] Exemplarily, the terminal calculates the ratio between the short-circuit capacity of the new energy access site and the equivalent power passing through the site according to formula (1) to determine the new energy access short-circuit ratio. Through this ratio, the stability of the power grid after new energy access can be evaluated. The larger the short-circuit ratio, the better the site can withstand the impact of power grid faults and the stronger the power grid support ability.

[0093] (1)

[0094] In the formula: is the short-circuit capacity (MWA) of the connection point of the new energy power station / the low-voltage side of the step-up transformer of the power generation unit; 、 are respectively the output powers (MW) of the connection point of the new energy power station / the power generation unit and ; is the equivalent nodal impedance matrix seen from the low-voltage side of the connection point of the new energy power station / the step-up transformer of the power generation unit of the row and column elements (Ω). Among them, shows the self-impedance of the new energy site and the combined equivalent value of the mutual impedance . The self-impedance represents the equivalent impedance to the ground of the connection point of the new energy power station, and the mutual impedance represents the electrical interaction between the connection points of the new energy power stations.

[0095] In this embodiment, by accurately calculating the short-circuit ratio, a scientific basis is provided for the new energy access of the power grid, enabling the power grid to always maintain high stability and security when accessing a large amount of new energy. At the same time, this method also has high adaptability, can be dynamically adjusted according to the real-time state of the power grid, optimize the new energy access scheme, and improve the intelligent level and self-adaptive ability of the power grid.

[0096] In an exemplary embodiment, before sorting each new energy access site after new energy access according to the new energy access short-circuit ratio and the new energy consumption space to obtain the short-circuit ratio sorting result and the consumption space sorting result, it further includes: obtaining the first load level of each new energy access site and the new energy scale of the currently accessed new energy; determining the consumption space of each new energy access site according to the first load level and the new energy scale.

[0097] Among them, the first load level can be the load demand of each new energy access site under current or expected conditions, which can refer to the power load required by the site during a specific period. The new energy scale is the new energy capacity currently accessed by each new energy access site.

[0098] Exemplarily, the terminal considers the power consumption requirements of the new energy access sites at different time periods, and calculates the first load level through the load forecasting model and historical load data. Exemplarily, when the change of the load level shows periodicity, the first load level can be further determined according to the load fluctuations in different time periods (such as peak periods and valley periods). For example, during the high-temperature period in summer, the load level of the site may reach the highest, while during the night or low-load periods, the load level may be lower.

[0099] Specifically, the accommodation space can be the capacity of each access site to further accommodate the new energy that can be accommodated without affecting the stability and security of the power grid. It can be the difference between the first load level of the current site and the existing new energy scale. Exemplarily, the accommodation space can be calculated by formula (2):

[0100] (2)

[0101] In the formula: is the load on the site (MW), is the scale of the new energy connected to the site (MW).

[0102] In an exemplary embodiment, in the operating scenario, the new energy access transient model is used to determine the synchronous stability risk of the power grid load center. According to the synchronous stability risk, determining the new energy carrying scale of the power grid load center includes:

[0103] In the operating scenario, the transient model is used to simulate different line faults of the power grid load center, and calculate the new energy limit scale corresponding to each different line fault of the power grid load center; according to multiple new energy limit scales, the new energy carrying scale of the power grid load center is determined.

[0104] Among them, the new energy limit scale can be the maximum new energy capacity that the power grid load center can undertake under different line fault conditions. Exceeding this scale may lead to power grid instability or out-of-step.

[0105] Exemplarily, the terminal first uses the transient model to simulate different line fault scenarios in the operating scenario of the power grid load center. Specifically, these faults include typical fault modes such as three-phase short-circuit faults occurring in all 220 kV and above lines in the power grid. During the simulation process, the transient model will simulate the dynamic response of the power grid, especially the instantaneous changes of each access point and important power equipment in the power grid, including frequency fluctuations, voltage changes, sudden changes in power output, etc. When a three-phase short-circuit fault occurs in a certain high-voltage transmission line, the power grid may experience power imbalance or voltage dip, and the simulation will calculate the maximum new energy capacity that the power grid can undertake in this case as the new energy to ensure the stable operation of the power grid without out-of-step or power interruption.

[0106] By comparing multiple new energy limit scales, the new energy carrying scale of the grid load center is obtained. By comparing these limit scales, the smallest new energy limit scale is selected as the new energy carrying scale of the grid load center. The smallest new energy limit scale represents the strictest stability requirements of the grid under various fault scenarios, that is, the maximum new energy capacity that the grid can safely accommodate without overloading and maintaining stable operation.

[0107] In this embodiment, the new energy access capacity of the grid load center under different fault conditions is quantified by the new energy carrying scale, ensuring that the grid can still stably accept new energy when encountering various line faults. By comparing the new energy limit scales under multiple fault scenarios, the smallest new energy carrying scale is finally determined, which can improve the adaptability of the grid to new energy and ensure that the grid maintains a high stability when facing a high proportion of new energy access in the future.

[0108] In an exemplary embodiment, determining the operation scenario of the grid load center after new energy access includes: determining the operation attributes of the grid load center; the operation attributes include the second load level, the number of power generation units, and the new energy output level; according to the operation problems expected to occur after new energy access in the grid load center, determining the operation condition data under the operation attributes, and based on the operation condition data, constructing the operation scenario of the grid load center after new energy access.

[0109] Among them, the second load level refers to the power demand level of the grid load center after new energy access. Different from the "first load level", the second load level takes into account the impact after new energy equipment is connected to the grid and can be adjusted according to the predicted power demand and the output of new energy. The second load level reflects the actual load change of the grid after new energy access.

[0110] Specifically, the terminal first determines the operation attributes of the grid load center after new energy access according to the second load level, the number of power generation units, and the new energy output level of the grid load center. Existing new energy generally uses a "Grid-following" grid-connected converter to connect to the grid, which shows a current source characteristic to the grid. The operation problems may include a weak system and a low short-circuit capacity, resulting in problems such as difficulty in accurately locking the phase of new energy grid connection and unstable grid connection synchronization in the load center. According to the occurring operation problems, the operation condition data corresponding to the current operation attributes of the load center can be judged, and further the operation scenario of new energy access can be constructed. For example, under the problems of a weak system and a low short-circuit capacity, the second load level of the corresponding operation attributes is a large load, the number of conventional units in operation is small, and the new energy output level is large, thus constituting the operation scenario after new energy access.

[0111] In this embodiment, by addressing the operation issues of integrating new energy into the load center of the power grid, determining the second load level, increasing the number of power generation units, and adjusting the output level of new energy, the operation state of the power grid can be better predicted, providing a scientific basis for the operation scenarios of new energy integration.

[0112] In an exemplary embodiment, the new energy access sites include a first new energy access site with new energy already connected and a second new energy access site without new energy connected.

[0113] Integrate the short - circuit ratio sorting result and the accommodation space sorting result to obtain the new energy access order of the new energy access sites, including: obtaining the preset weights corresponding to the new energy access short - circuit ratio and the new energy accommodation space respectively; based on the preset weights, weighted - integrate the accommodation space sorting result and the short - circuit ratio sorting result corresponding to the first new energy access site to obtain the first new energy access order corresponding to the first new energy access site; based on the preset weights, weighted - integrate the accommodation space sorting result and the short - circuit ratio sorting result corresponding to the second new energy access site to obtain the second new energy access order corresponding to the second new energy access site; determine the new energy access order of each new energy access site according to the first new energy access order and the second new energy access order.

[0114] In some embodiments, as Figure 3 shown, the terminal classifies all new energy access sites into two categories in the first - round sorting, one is the first new energy access site with new energy already connected, and the other is the second new energy access site without new energy connected. Conduct the second - round short - circuit ratio sorting and the third - round accommodation space sorting for the first new energy access site and the second new energy access site respectively to obtain the corresponding accommodation space sorting result and short - circuit ratio sorting result.

[0115] Set the preset weights of the short - circuit ratio and the accommodation space according to the specific operation requirements of the power grid. The short - circuit ratio reflects the power grid's ability to withstand faults, while the accommodation space reflects the power grid's ability to accommodate more new energy. For the two types of new energy access sites, first multiply the sorting results of their short - circuit ratio and accommodation space by the preset weights respectively. Then, based on the weighted integration of the weights, obtain the comprehensive sorting score for each site, and further obtain the first new energy access order and the second new energy access order corresponding to the first new energy access site and the second new energy access site. The calculation process of the comprehensive sorting score can be calculated by formula (3). A site with a higher comprehensive sorting score means that when this site accesses new energy, it has less impact on the power grid and can more effectively support the access of new energy. According to this, the new energy access order of each site can be determined. Finally, integrate the first new energy access order and the second new energy access order to obtain the new energy access order of each new energy access site.

[0116] (3)

[0117] Wherein, is the comprehensive sorting rank, is the short-circuit ratio sorting result of the second round; is the sorting result according to the accommodation space in the third round , are the preset weights of the short-circuit ratio and the accommodation space respectively.

[0118] In this embodiment, by dividing the new energy access sites into two categories with or without new energy currently, and performing weighted integration based on the short-circuit ratio and the accommodation space of each new energy access site, the priority access order of each access site is determined, ensuring that when the power grid accesses new energy, it can not only efficiently utilize resources, but also maximize the stable operation of the power grid.

[0119] In one embodiment, according to the safety and stability calculation specifications, the multi-station short-circuit ratio of the low-voltage side of the step-up transformer of the power generation unit at the new energy access site should not be lower than 1.5, the connection point should not be less than 2.0, and it is preferably greater than 3.0; in addition, according to the South Grid Stability Guidelines, for a system with a multi-station short-circuit ratio lower than 3.0 at the new energy connection point, electromagnetic transient and electromechanical transient time-domain calculations should be carried out to check the safety and stability level of the new energy grid connection system. On this basis, the following provides an embodiment with a short-circuit ratio greater than 3.0 and electromagnetic transient verification. Specifically, as Figure 4 shown, in step S401, determine the operation scenario of the power grid load center after the access of new energy. By evaluating the load level (the second load level), the number of power generation units and the new energy output level attributes, the power grid load situation after the access of new energy is obtained. At the same time, considering the volatility of new energy, the operation scenario of the newly connected new energy at the power grid load center is accurately estimated. The number of power generation units determines the power generation capacity of the power grid and the new energy carrying capacity, and the new energy output level directly affects the load fluctuation of the power grid.

[0120] In step S402, establish and utilize the new energy access transient model to determine the new energy carrying scale of the power grid load center. Use the new energy access transient model to verify the synchronous stability risk of the power grid load center after the access of new energy, and simulate the dynamic response of the power grid under faults such as three-phase short circuit. During the simulation process, evaluate the new energy limit scale of the power grid under different fault conditions, that is, the maximum new energy capacity that the power grid can stably accept. Through this simulation, it is possible to understand the maximum capacity of the power grid to undertake new energy under different fault conditions, ensuring that the power grid will not lose synchronization or other stability problems due to excessive access of new energy.

[0121] Step S403: Classify the new - energy access sites, and for the classified sites, calculate the corresponding short - circuit ratio sorting results and accommodation space sorting results. The calculation divides the new - energy access sites in the power - grid load center into two categories. One is the first new - energy access sites that have already accessed new energy, and the other is the second new - energy access sites that have not accessed new energy. According to the actual needs of the power - grid load center, calculate the accommodation space of each type of new - energy access site. The accommodation space refers to the new - energy capacity that the power grid can safely accept under the current load level (the first load level). At the same time, the short - circuit ratio is also calculated. The short - circuit ratio reflects the ratio between the maximum fault current (short - circuit current) that the power grid can withstand during a fault and the new - energy capacity passing through this site. The higher the short - circuit ratio, the better the site can support the access of new energy. Sort according to the calculated short - circuit ratio and accommodation space of each site to obtain the short - circuit ratio sorting results and accommodation space sorting results corresponding to the first new - energy access sites and the second new - energy access sites.

[0122] Step S404: Based on the short - circuit ratio sorting results and accommodation space sorting results, perform weighted integration using preset weights. Optionally, different weights are assigned to the first new - energy access sites and the second new - energy access sites. The setting of these weights is adjusted according to the actual needs of the power grid. For example, for the first new - energy access sites that have already accessed new energy, priority is given to accessing sites with a high short - circuit ratio. For the second new - energy access sites that have not accessed new energy, priority is given to considering those with a large accommodation space for access. The weights of the short - circuit ratio and accommodation space can be dynamically adjusted according to the requirements of power - grid stability and new - energy accommodation capacity.

[0123] Step S405: Conduct a comprehensive sorting based on the short - circuit ratio sorting results and accommodation space sorting results corresponding to the first new - energy access sites and the second new - energy access sites. Sort the first new - energy access sites that have already accessed new energy, and give priority to accessing sites with a high short - circuit ratio and a large accommodation space. Then, sort the second new - energy access sites that have not accessed new energy. Finally, determine the optimal new - energy access order for the entire power grid by combining the access orders of the two.

[0124] Step S406: Determine the new - energy carrying scale and new - energy access order as the new - energy access configuration.

[0125] In this embodiment, by considering data such as grid load, conventional power sources, new energy, and grid structure in the urban power grid planning and operation mode, the synchronous stable scenario mode of the load center, such as load level, conventional power sources, and new energy, in the city is determined, an electromagnetic transient simulation model is established, the overall carrying scale of regional new energy is calculated, and then key factors affecting new energy access sites, such as whether there is new energy access, the short-circuit ratio of new energy access, and new energy consumption space, are comprehensively considered to optimize the layout of new energy, and finally the overall configuration scale of regional new energy and the ranking of new energy access sites are determined.

[0126] It should be understood that although the steps in the flowcharts involved in the above-described embodiments are sequentially shown according to the indications of the arrows, these steps do not necessarily have to be executed in the order indicated by the arrows. Unless otherwise clearly stated in this article, the execution of these steps is not strictly limited in order, 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 do not necessarily have to be executed at the same time, but can be executed at different times. The execution order of these steps or stages does not necessarily have to be sequential, but can be executed alternately or alternately with at least a part of other steps or steps in other steps.

[0127] Based on the same inventive concept, the embodiment of the present application also provides a new energy configuration device for implementing the new energy configuration method described above. The solution provided by this device to solve the problem is similar to the solution described in the above method. Therefore, the specific limitations in one or more embodiments of the new energy configuration device provided below can refer to the limitations on the new energy configuration method in the above text, and will not be repeated here.

[0128] In an exemplary embodiment, as Figure 5 shown, a new energy configuration device is provided, including: an operation scenario and transient model determination module 510, a new energy carrying scale determination module 520, a new energy access site determination module 530, a new energy access site ranking module 540, a new energy access order integration module 550, and a new energy access configuration determination module 560, where:

[0129] The operation scenario and transient model determination module 510 is used to determine the operation scenario after new energy access at the grid load center and the new energy access transient model; the new energy access transient model is used to simulate the change information of power data at the grid load center after new energy access, and determine the synchronous stability risk based on the change information.

[0130] The new - energy carrying capacity determination module 520 is used to determine the synchronization stability risk for the grid load center by using the new - energy access transient model in the operation scenario, and determine the new - energy carrying capacity of the grid load center according to the synchronization stability risk;

[0131] The new - energy access site determination module 530 is used to determine the new - energy access sites in the grid load center;

[0132] The new - energy access site sorting module 540 is used to sort each new - energy access site after new - energy access according to the new - energy access short - circuit ratio and the new - energy consumption space, and obtain the short - circuit ratio sorting result and the consumption space sorting result;

[0133] The new - energy access order integration module 550 is used to integrate the short - circuit ratio sorting result and the consumption space sorting result to obtain the new - energy access order of the new - energy access sites;

[0134] The new - energy access configuration determination module 560 is used to determine the new - energy access configuration by using the new - energy carrying capacity and the new - energy access order.

[0135] In one embodiment, the new - energy access site sorting module 540 is further used to determine the short - circuit capacity generated when the new - energy access site accesses new - energy; determine the new - energy capacity accessed by the grid load center, and determine the equivalent power input from the new - energy access site to the grid load center after new - energy access according to the new - energy capacity; determine the new - energy access short - circuit ratio of each new - energy access site according to the short - circuit capacity and the equivalent power.

[0136] In one embodiment, the new - energy access site sorting module 540 is further used to obtain the first load level of each new - energy access site and the new - energy scale of the currently accessed new - energy; determine the consumption space of each new - energy access site according to the first load level and the new - energy scale.

[0137] In one embodiment, the new - energy carrying capacity determination module 520 is further used to simulate different line faults of the grid load center by using the transient model in the operation scenario, calculate the new - energy limit capacity of the grid load center corresponding to each different line fault; determine the new - energy carrying capacity of the grid load center according to multiple new - energy limit capacities.

[0138] In one embodiment, the operation scenario and transient model determination module 510 is further configured to determine the operation attributes of the power grid load center; the operation attributes include the second load level, the number of power generation units, and the new energy output level; according to the operation problems expected to occur in the power grid load center after the new energy access, determine the operation condition data under the operation attributes, and based on the operation condition data, construct an operation scenario of the power grid load center after the new energy access.

[0139] In one embodiment, the new energy access site includes a first new energy access site where new energy has been accessed and a second new energy access site where new energy has not been accessed; the new energy access sequence integration module 550 is further configured to obtain the preset weights corresponding to the new energy access short-circuit ratio and the new energy consumption space respectively; based on the preset weights, perform weighted integration on the consumption space sorting result and the short-circuit ratio sorting result corresponding to the first new energy access site to obtain the first new energy access sequence corresponding to the first new energy access site; based on the preset weights, perform weighted integration on the consumption space sorting result and the short-circuit ratio sorting result corresponding to the second new energy access site to obtain the second new energy access sequence corresponding to the second new energy access site; according to the first new energy access sequence and the second new energy access sequence, determine the new energy access sequence of each new energy access site.

[0140] Each module in the above new energy configuration device can be implemented in whole or in part by software, hardware, and their combination. The above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or stored in the memory of the computer device in the form of software, so as to facilitate the processor to call and execute the operations corresponding to the above modules.

[0141] In an exemplary embodiment, a computer device is provided. The computer device can be a terminal, and its internal structure diagram can be as Figure 6As shown in the figure. 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 computer programs. The internal memory provides an environment for the operation of the operating system and computer programs 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 implemented through WIFI, a mobile cellular network, near field communication (NFC), or other technologies. When the computer program is executed by the processor, it implements a new energy configuration method.

[0142] Those skilled in the art can understand that Figure 6 the structure shown in the figure is only a block diagram of some structures related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present 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 different component arrangements.

[0143] 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.

[0144] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by the processor, the steps in the above method embodiments are implemented.

[0145] In one embodiment, a computer program product is provided, including a computer program, and when the computer program is executed by the processor, the steps in the above method embodiments are implemented.

[0146] It should be noted that the user information (including but not limited to user device 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 authorized by the user or fully authorized by all parties, and the collection, use, and processing of relevant data need to comply with relevant regulations.

[0147] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above 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 embodiments of the above methods. 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 memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, 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, artificial intelligence (AI) processors, etc., without limitation.

[0148] 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 the present application.

[0149] 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 to 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 new energy configuration method, characterized in that, The method includes: Determine the operation scenario of the grid load center after the access of new energy and the transient model of new energy access; the transient model of new energy access is used to simulate the change information of power data of the grid load center after the access of new energy, and determine the synchronous stability risk based on the change information; Under the operation scenario, use the transient model of new energy access to determine the synchronous stability risk of the grid load center, and determine the new energy carrying capacity of the grid load center according to the synchronous stability risk; Determine the new energy access sites in the grid load center; Sort each new energy access site after the access of new energy according to the short-circuit ratio of new energy access and the new energy consumption space to obtain the short-circuit ratio sorting result and the consumption space sorting result; Integrate the short-circuit ratio sorting result and the consumption space sorting result to obtain the new energy access order of the new energy access sites; Determine the new energy access configuration by using the new energy carrying capacity and the new energy access order.

2. The method according to claim 1, wherein Before sorting each new energy access site after the access of new energy according to the short-circuit ratio of new energy access and the new energy consumption space to obtain the short-circuit ratio sorting result and the consumption space sorting result, it further includes: Determine the short-circuit capacity generated by the new energy access site when accessing new energy; Determine the new energy capacity accessed by the grid load center, and determine the equivalent power input from the new energy access site to the grid load center after the access of new energy according to the new energy capacity; Determine the short-circuit ratio of each new energy access according to the short-circuit capacity and the equivalent power.

3. The method according to claim 2, wherein Before sorting each new energy access site after the access of new energy according to the short-circuit ratio of new energy access and the new energy consumption space to obtain the short-circuit ratio sorting result and the consumption space sorting result, it further includes: Obtain the first load level of each new energy access site and the new energy scale of the currently accessed new energy; Determine the consumption space of each new energy access site according to the first load level and the new energy scale.

4. The method according to claim 1, wherein The step of using the transient model of new energy access to determine the synchronous stability risk of the grid load center under the operation scenario and determining the new energy carrying capacity of the grid load center according to the synchronous stability risk includes: Under the operation scenario, use the transient model to simulate different line faults of the grid load center, and calculate the new energy limit scale of the grid load center corresponding to each different line fault; Determine the new energy carrying capacity of the grid load center according to multiple new energy limit scales.

5. The method according to claim 4, wherein The step of determining the operation scenario of the grid load center after the access of new energy includes: Determine the operation attributes of the grid load center; the operation attributes include the second load level, the number of power generation units, and the new energy output level; Determine the operation condition data under the operation attributes according to the operation problems expected to occur after the access of new energy to the grid load center, and construct the operation scenario of the grid load center after the access of new energy based on the operation condition data.

6. The method according to any one of claims 1 to 5, characterized in that The new energy access sites include a first new energy access site that has already accessed new energy and a second new energy access site that has not accessed new energy; The integration of the short-circuit ratio sorting result and the consumption space sorting result to obtain the new energy access order of the new energy access sites includes: Obtain the preset weights corresponding to the new energy access short-circuit ratio and the new energy consumption space respectively; Based on the preset weights, perform weighted integration on the consumption space sorting result and the short-circuit ratio sorting result corresponding to the first new energy access site to obtain the first new energy access order corresponding to the first new energy access site; Based on the preset weights, perform weighted integration on the consumption space sorting result and the short-circuit ratio sorting result corresponding to the second new energy access site to obtain the second new energy access order corresponding to the second new energy access site; Determine the new energy access order of each new energy access site according to the first new energy access order and the second new energy access order.

7. A new energy configuration device, characterized in that, The device includes: An operation scenario and transient model determination module, configured to determine the operation scenario after new energy access and the new energy access transient model of the grid load center; the new energy access transient model is used to simulate the change information of the power data after new energy access in the grid load center, and determine the synchronous stability risk based on the change information; A new energy carrying capacity determination module, configured to determine the synchronous stability risk of the grid load center by using the new energy access transient model under the operation scenario, and determine the new energy carrying capacity of the grid load center according to the synchronous stability risk; A new energy access site determination module, configured to determine the new energy access sites in the grid load center; A new energy access site sorting module, configured to sort each new energy access site after new energy access according to the new energy access short-circuit ratio and the new energy consumption space to obtain a short-circuit ratio sorting result and a consumption space sorting result; A new energy access order integration module, configured to integrate the short-circuit ratio sorting result and the consumption space sorting result to obtain the new energy access order of the new energy access sites; A new energy access configuration determination module, configured to determine the new energy access configuration by using the new energy carrying capacity and the new energy access order.

8. A computer device, comprising a memory and a processor, the memory storing a computer program, characterized in that, 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 the 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 the processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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