Low-voltage transformer area line load equivalence method, system, equipment, medium and product

Abstract

The invention relates to the technical field of low-voltage transformer areas, and discloses a low-voltage transformer area line load equivalence method, a low-voltage transformer area line load equivalence system, low-voltage transformer area line load equivalence equipment, a medium and a product. The method comprises the following steps: determining an equivalent strategy under different unknown conditions of lines and load distribution in a low-voltage transformer area, matching to a line load equivalent scheme corresponding to the low-voltage transformer area through an average load rate and a data equivalent scene, and performing equivalent processing on the data equivalent scene through the line load equivalent scheme to obtain a line load equivalent scheme corresponding to the low-voltage transformer area. And obtaining a line load equivalent result of the low-voltage transformer area, thereby accurately reflecting an equivalent strategy under different unknown conditions of line and load distribution in the low-voltage transformer area by considering actual conditions of line connection and load distribution of the low-voltage transformer area, and greatly improving the accuracy and practicability of equivalent processing.

Description

Technical Field

[0001] This invention relates to the field of low-voltage distribution area technology, and in particular to a method, system, equipment, medium, and product for equivalence of line load in low-voltage distribution areas. Background Technology

[0002] As the end-point of the power system facing users, the voltage quality of low-voltage distribution areas directly affects the stability of residential electricity consumption and industrial production electricity consumption. Low voltage problems can not only lead to decreased efficiency and shortened lifespan of electrical equipment, but also cause user complaints and potential electrical safety hazards, making them a key focus of power grid operation and maintenance management.

[0003] Low-voltage analysis relies on power flow calculations; however, power flow models require line parameters for the entire network. In engineering projects, low-voltage distribution networks are numerous, with frequent changes in topology, and the connections between users and branch lines, as well as the distribution locations of loads, are often missing. Therefore, it is necessary to perform equivalent processing on unknown line and load data to eliminate the impact of unknown line parameters and complex load characteristics.

[0004] Existing methods for equivalence of line loads require massive amounts of accurate data, have low accuracy, and are computationally inefficient, making them difficult to apply in practical engineering. Summary of the Invention

[0005] In view of this, the present invention provides a method, system, device, medium and product for equivalence of line load in low-voltage distribution areas, which solves the technical problems of existing line load equivalence methods requiring massive and accurate data, having low accuracy and low calculation efficiency, and being difficult to apply in practical engineering.

[0006] The first aspect of this invention provides a method for equivalence of line load in a low-voltage distribution area, comprising:

[0007] Obtain line connection information and load distribution information for low-voltage distribution areas;

[0008] Based on the line connection information and the load distribution information, a data equivalent scenario corresponding to the low-voltage distribution area is matched in a preset equivalent scenario library; wherein, the data equivalent scenario is used to reflect the equivalent strategy under different unknown conditions of line and load distribution in the low-voltage distribution area;

[0009] The average load rate of the low-voltage distribution area is obtained, and the line load equivalent scheme corresponding to the low-voltage distribution area is matched in the preset equivalent scheme library based on the average load rate and the data equivalent scenario.

[0010] The data equivalent scenario is processed according to the line load equivalent scheme to obtain the line load equivalent result of the low-voltage distribution area.

[0011] Preferably, the step of matching the data equivalent scenario corresponding to the low-voltage distribution area in a preset equivalent scenario library based on the line connection information and the load distribution information includes:

[0012] Based on the line connection information and the load distribution information, the unknown situations of line and load distribution in the low-voltage distribution area are determined; wherein, the unknown situations of line and load distribution include unknown connection methods of all users and trunk lines, unknown connection methods of some users and trunk lines, unknown line length, unknown location range of some users at all trunk line branch nodes, and unknown location range of some users at trunk line nodes.

[0013] Based on the unknown situation of the line and load distribution in the low-voltage distribution area, the data equivalent scenario corresponding to the low-voltage distribution area is matched in the preset equivalent scenario library;

[0014] If the connection methods of all users and the backbone are unknown, and the line length is unknown, then the data equivalent scenario corresponding to the low-voltage distribution area is the first data equivalent scenario; wherein, the first data equivalent scenario is used only for line equivalence.

[0015] If the connection method and line length of some users are unknown, and the location range of some users at all branches of the main line is unknown, then the data equivalent scenario corresponding to the low-voltage distribution area is the second data equivalent scenario; wherein, the second data equivalent scenario is used only for load distribution equivalence.

[0016] If the location range of a user at a mainline node is unknown, the data equivalent scenario corresponding to the low-voltage distribution area is the third data equivalent scenario; wherein, the third data equivalent scenario is used to simultaneously represent the line and load distribution.

[0017] Preferably, the step of obtaining the average load rate of the low-voltage distribution area, and matching the line load equivalent scheme corresponding to the low-voltage distribution area in a preset equivalent scheme library based on the average load rate and the data equivalent scenario, includes:

[0018] The average load rate of the low-voltage distribution area, a first preset load rate threshold, and a second preset load rate threshold are obtained; wherein, the first preset load rate threshold is less than the second preset load rate threshold.

[0019] The average load rate of the low-voltage distribution area is compared with the first preset load rate threshold and the second preset load rate threshold to obtain the comparison result of the average load rate;

[0020] Based on the comparison results of the average load rate and the data equivalent scenario, the line load equivalent scheme corresponding to the low-voltage distribution area is matched in the preset equivalent scheme library.

[0021] Preferably, the step of combining the comparison results of the average load rate and the data equivalent scenario to match the line load equivalent scheme corresponding to the low-voltage distribution area in a preset equivalent scheme library includes:

[0022] In the case where the data equivalent scenario is the first data equivalent scenario, if the average load rate is less than or equal to the first preset load rate threshold, then the line load equivalent scheme corresponding to the low-voltage distribution area is the second line equivalent scheme; if the average load rate is greater than the first preset load rate threshold and less than or equal to the second preset load rate threshold, then the line load equivalent scheme corresponding to the low-voltage distribution area is the first line equivalent scheme; if the average load rate is greater than the second preset load rate threshold, then the line load equivalent scheme corresponding to the low-voltage distribution area is the third line equivalent scheme.

[0023] When the data equivalent scenario is the second data equivalent scenario, if the average load rate is less than or equal to the first preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the third load distribution equivalent scheme; if the average load rate is greater than the first preset load rate threshold and less than or equal to the second preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the first load distribution equivalent scheme; if the average load rate is greater than the second preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the second load distribution equivalent scheme.

[0024] When the data equivalent scenario is the third data equivalent scenario, if the average load rate is less than or equal to the first preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the first line equivalent scheme and the third load distribution equivalent scheme; if the average load rate is greater than the first preset load rate threshold and less than or equal to the second preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the third line equivalent scheme and the first load distribution equivalent scheme; if the average load rate is greater than the second preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the second line equivalent scheme and the second load distribution equivalent scheme.

[0025] The first equivalent scheme is as follows: based on the average impedance of all known branch lines in the low-voltage distribution area, determine the impedance value of the line from each user to the main line.

[0026] The second equivalent line scheme is as follows: based on the total equivalent load power of all users, the average impedance of all known branch lines in the low-voltage distribution area, and the known equivalent line length, determine the impedance value of the line from each user to the main line.

[0027] The third equivalent line scheme is as follows: Based on the average power consumption of the users and the average power consumption of the low-voltage distribution area, determine the equivalent average power consumption of the users; based on the equivalent average power consumption of the users and the minimum and maximum lengths of other known branch lines within the low-voltage distribution area, determine the total equivalent line length from all users to the main line; based on the total equivalent line length and the average impedance of all known branch lines in the low-voltage distribution area, determine the impedance value of the line from each user to the main line.

[0028] The first equivalent load distribution scheme is as follows: based on the cumulative summation of user loads located in the same phase, it is equivalent to the first equivalent load, and the nodes of the first equivalent load are connected to the load nodes at the beginning of the grid of the low-voltage distribution area.

[0029] The second equivalent load distribution scheme is as follows: based on the cumulative summation of user loads located in the same phase, it is equivalent to a second equivalent load, and the nodes of the second equivalent load are connected to the load nodes at the middle of the grid of the low-voltage distribution area.

[0030] The third equivalent load distribution scheme is as follows: based on the cumulative summation of user loads located in the same phase, it is equivalent to a third equivalent load, and the nodes of the third equivalent load are connected to the load nodes at the end of the grid of the low-voltage distribution area.

[0031] Preferably, the step of performing equivalent processing on the data equivalent scenario according to the line load equivalent scheme to obtain the line load equivalent result of the low-voltage distribution area includes:

[0032] The line parameters and load distribution parameters in the data equivalent scenario are equivalent according to the line load equivalent scheme, and the data equivalent scenario is updated based on the equivalent line parameters and load distribution parameters to obtain the line load equivalent result of the low-voltage distribution area.

[0033] Preferably, the method further includes:

[0034] Based on the equivalent line load results of the low-voltage distribution area, power flow calculations are performed on the branch lines of the low-voltage distribution area, and the voltage data of each branch line is determined based on the power flow calculation results.

[0035] Secondly, the present invention also provides a low-voltage distribution area line load equivalent system, comprising:

[0036] The information acquisition module is used to acquire line connection information and load distribution information of the low-voltage distribution area;

[0037] The equivalent scenario matching module is used to match the data equivalent scenario corresponding to the low-voltage distribution area in a preset equivalent scenario library based on the line connection information and the load distribution information; wherein, the data equivalent scenario is used to reflect the equivalent strategy under different unknown conditions of line and load distribution in the low-voltage distribution area;

[0038] The equivalent scheme matching module is used to obtain the average load rate of the low-voltage distribution area, and match the line load equivalent scheme corresponding to the low-voltage distribution area in the preset equivalent scheme library based on the average load rate and the data equivalent scenario.

[0039] The line load equivalence module is used to perform equivalent processing on the data equivalent scenario according to the line load equivalence scheme to obtain the line load equivalence result of the low-voltage distribution area.

[0040] Thirdly, the present invention also provides an electronic device, the electronic device including a memory and a processor, the memory storing a computer program, the computer program being executed by the processor causing the processor to perform the steps of the low-voltage distribution area line load equivalent method as described in the first aspect.

[0041] Fourthly, the present invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed, implements the steps of the low-voltage distribution area line load equivalence method as described in the first aspect.

[0042] Fifthly, the present invention also provides a computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions, wherein, when the program instructions are executed by a computer, the computer performs the steps of the low-voltage distribution area line load equivalence method as described in the first aspect.

[0043] As can be seen from the above technical solutions, this invention matches the line connection information and load distribution information of low-voltage distribution areas to the corresponding data equivalent scenarios of low-voltage distribution areas, thereby determining the equivalent strategies under different unknown conditions of line and load distribution in low-voltage distribution areas. Furthermore, by matching the average load rate and the data equivalent scenarios, it matches the corresponding line load equivalent scheme for low-voltage distribution areas. The data equivalent scenarios are then processed using the line load equivalent scheme to obtain the equivalent line load results for low-voltage distribution areas. Thus, by considering the actual situation of line connections and load distribution in low-voltage distribution areas, it can accurately reflect the equivalent strategies under different unknown conditions of line and load distribution in low-voltage distribution areas. Combining the average load rate and the matched data equivalent scenarios, it accurately selects the most suitable line load equivalent scheme for the current low-voltage distribution area, greatly improving the accuracy and practicality of the equivalent processing. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is an application environment diagram of a low-voltage distribution area line load equivalent method provided in an embodiment of the present invention;

[0046] Figure 2 A flowchart illustrating a low-voltage distribution area line load equivalent method provided in an embodiment of the present invention;

[0047] Figure 3 This is a schematic diagram of the power distribution network structure under the first data equivalent scenario provided in the embodiments of the present invention;

[0048] Figure 4 This is a schematic diagram of the power distribution network structure under the second data equivalent scenario provided in the embodiments of the present invention;

[0049] Figure 5 This is a schematic diagram of the power distribution network structure under the third data equivalent scenario provided in the embodiments of the present invention;

[0050] Figure 6 This is a schematic diagram of the structure of an equivalent system for low-voltage distribution area line load provided in an embodiment of the present invention;

[0051] Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0052] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] The low-voltage distribution area line load equivalent method provided in this application embodiment can be applied to, for example... Figure 1In the application environment shown, terminal 101 communicates with server 102 via a network. A data storage system can store the data that server 102 needs to process. The data storage system can be integrated onto server 102 or placed on a cloud or other network server. Terminal 101 or server 102 obtains the line connection information and load distribution information of the low-voltage distribution area; based on the line connection information and load distribution information, it matches the corresponding data equivalent scenario for the low-voltage distribution area in a preset equivalent scenario library; wherein, the data equivalent scenario is used to reflect the equivalent strategy under different unknown conditions of line and load distribution in the low-voltage distribution area; it obtains the average load rate of the low-voltage distribution area, and based on the average load rate and the data equivalent scenario, matches the corresponding line load equivalent scheme for the low-voltage distribution area in a preset equivalent scheme library; it performs equivalent processing on the data equivalent scenario according to the line load equivalent scheme to obtain the line load equivalent result of the low-voltage distribution area.

[0054] Terminal 101 can be, but is not limited to, various personal computers, laptops, smartphones, and tablets.

[0055] Server 102 can be a standalone physical server, a server cluster or distributed system consisting of multiple physical servers, or a cloud server that provides cloud computing services.

[0056] like Figure 2 As shown in the embodiments of this application, a method for equivalent load of low-voltage distribution area lines is provided, which is applied to... Figure 1 Taking terminal 101 or server 102 as an example, the explanation includes the following steps S1 to S4. Wherein:

[0057] Step S1: Obtain line connection information and load distribution information for the low-voltage distribution area.

[0058] The line connection information includes the phase-to-user connection relationship, the user topology connection relationship, the trunk line length, the connection method between the user and the trunk line, and the line length between the user and the trunk line, etc.

[0059] Load distribution information includes user load data and the location range of users at trunk branch nodes.

[0060] Step S2: Based on the line connection information and load distribution information, match the data equivalent scenario corresponding to the low-voltage distribution area in the preset equivalent scenario library; whereby the data equivalent scenario is used to reflect the equivalent strategy under different unknown conditions of line and load distribution in the low-voltage distribution area.

[0061] The pre-defined equivalent scenario library contains the mapping relationship between line connection information, load distribution information, and data equivalent scenarios. Moreover, the pre-defined equivalent scenario library includes a variety of data equivalent scenarios. Different data equivalent scenarios reflect equivalent strategies under different unknown conditions of line and load distribution in low-voltage distribution areas, in order to adapt to different combinations of line connections and load distribution.

[0062] Step S3: Obtain the average load rate of the low-voltage distribution area. Based on the average load rate and the data equivalent scenario, match the line load equivalent scheme corresponding to the low-voltage distribution area in the preset equivalent scheme library.

[0063] The average load factor of a low-voltage distribution area is calculated as the ratio of the total load of all users within the area to the total capacity of the area, reflecting the overall load usage of the area. The pre-set equivalent scheme library, on the other hand, is a set of optimal line load equivalent schemes for different combinations of average load factors and data equivalent scenarios, summarized from historical data and experience.

[0064] Step S4: Perform equivalent processing on the data equivalent scenario according to the line load equivalent scheme to obtain the line load equivalent result of the low-voltage distribution area.

[0065] After determining the equivalent scheme for line load, the line parameters and load distribution parameters in the data equivalent scenario will be equivalent according to the scheme.

[0066] It should be noted that, in this embodiment, the line connection information and load distribution information of the low-voltage distribution area are matched to the corresponding data equivalent scenario of the low-voltage distribution area to determine the equivalent strategy under different unknown conditions of line and load distribution in the low-voltage distribution area. By matching the average load rate and the data equivalent scenario, the corresponding line load equivalent scheme of the low-voltage distribution area is matched. The data equivalent scenario is then processed by the line load equivalent scheme to obtain the line load equivalent result of the low-voltage distribution area. Thus, by considering the actual situation of line connection and load distribution in the low-voltage distribution area, the equivalent strategy under different unknown conditions of line and load distribution in the low-voltage distribution area can be accurately reflected. By combining the average load rate and the matched data equivalent scenario, the most suitable line load equivalent scheme for the current low-voltage distribution area is accurately selected, which greatly improves the accuracy and practicality of the equivalent processing.

[0067] In some embodiments, based on line connection information and load distribution information, a data equivalent scenario corresponding to the low-voltage distribution area is matched in a preset equivalent scenario library, including:

[0068] Step S201: Based on the line connection information and load distribution information, determine the unknown situations of line and load distribution in the low-voltage distribution area; wherein, the unknown situations of line and load distribution include unknown connection methods of all users and trunk lines, unknown connection methods of some users and trunk lines, unknown line length, unknown location range of some users at all trunk line branch nodes, and unknown location range of some users at trunk line nodes.

[0069] Since the obtained line connection information and load distribution information are known, by comparing the obtained line connection information and load distribution information with various possible unknown situations of the preset line and load distribution, the specific unknown situations of line and load distribution in the low-voltage distribution area can be determined.

[0070] For example, if the information obtained lacks a description of the connection method between some users and the backbone, it can be determined that there are cases where the connection method between some users and the backbone is unknown; if there is no specific data about the line length, it can be determined that the line length is unknown.

[0071] Step S202: Based on the unknown situation of the line and load distribution in the low-voltage distribution area, match the data equivalent scenario corresponding to the low-voltage distribution area in the preset equivalent scenario library.

[0072] If the connection methods of all users and the main line are unknown, and the line length is unknown, then the data equivalent scenario corresponding to the low-voltage distribution area is the first data equivalent scenario; the first data equivalent scenario is used only for line equivalence.

[0073] Among them, such as Figure 3 As shown, the power distribution network structure extends from the transformer to the user end. The transformer is the "power source" of the low-voltage distribution area, responsible for stepping down high-voltage electricity to low-voltage electricity (such as 380V / 220V) to supply power to the entire distribution area. Units 1 to 68 represent the user side. When the low-voltage distribution area can only obtain the phase-to-user connection relationship, the length of the main line, and the user load data, and the location range of the user at the branch node of the main line is known, but the connection method of all users and the main line is unknown, and the line length is also unknown, it is necessary to perform equivalence on this part of the line data. Therefore, the first data equivalence scenario is selected, which only performs line equivalence.

[0074] If the connection method and line length of some users are unknown, and the location range of some users at all branches of the main line is unknown, then the data equivalent scenario corresponding to the low-voltage distribution area is the second data equivalent scenario; the second data equivalent scenario is used only for load distribution equivalence.

[0075] like Figure 4 As shown, Figure 4 and Figure 3 Their structures are similar, but, Figure 4The medium and low voltage distribution area can obtain trunk line data and the topological connection relationship of some users, but the connection method and line length of some users to the trunk line are unknown, and the location range of the trunk line branch nodes is unknown. Therefore, the second data equivalent scenario is selected, and the distribution of these users needs to be equivalent.

[0076] If the location range of a user at a mainline node is unknown, the data equivalent scenario corresponding to the low-voltage distribution area is the third data equivalent scenario; the third data equivalent scenario is used to simultaneously represent the line and load distribution.

[0077] like Figure 5 As shown, Figure 5 and Figure 3 The structure is similar, but the low-voltage distribution area can obtain the phase-to-user connection relationship, trunk line length and user load data. However, the location range of users at the trunk line nodes is only known at some branch nodes. In this case, in addition to the line equivalence for the known branch node user range, it is also necessary to perform equivalence for users with unknown distribution. Therefore, the third data equivalence scenario is selected.

[0078] In some embodiments, the average load rate of the low-voltage distribution area is obtained, and based on the average load rate and the data equivalent scenario, the corresponding line load equivalent scheme for the low-voltage distribution area is matched in a preset equivalent scheme library, including:

[0079] Step S301: Obtain the average load rate of the low-voltage distribution area, the first preset load rate threshold, and the second preset load rate threshold; wherein, the first preset load rate threshold is less than the second preset load rate threshold.

[0080] The first preset load rate threshold and the second preset load rate threshold can be set to 30% and 55%, respectively.

[0081] Step S302: Compare the average load rate of the low-voltage distribution area with the first preset load rate threshold and the second preset load rate threshold to obtain the comparison result of the average load rate.

[0082] Among them, the average load rate of the low-voltage distribution area is generally always greater than zero.

[0083] Step S303: Combining the comparison results of average load rate and data equivalent scenarios, match the line load equivalent scheme corresponding to the low-voltage distribution area in the preset equivalent scheme library.

[0084] In some embodiments, by combining the comparison results of average load rates and data equivalent scenarios, a line load equivalent scheme corresponding to the low-voltage distribution area is matched in a preset equivalent scheme library, including:

[0085] Step S3031: In the case of the first data equivalent scenario, if the average load rate is less than or equal to the first preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the second line equivalent scheme; if the average load rate is greater than the first preset load rate threshold and less than or equal to the second preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the first line equivalent scheme; if the average load rate is greater than the second preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the third line equivalent scheme.

[0086] Understandably, if the average load rate is less than or equal to the first preset load rate threshold, it indicates that the load on the low-voltage distribution area is relatively light. In this case, the second line equivalent scheme is used. This scheme may focus on simplifying the line model or using more lenient equivalent conditions to adapt to the line characteristics under low load conditions. If the average load rate is greater than the first preset load rate threshold but less than or equal to the second preset load rate threshold, it indicates that the load on the low-voltage distribution area is at a moderate level. In this case, the first line equivalent scheme is used, which ensures equivalence accuracy while also considering computational efficiency and practicality. If the average load rate is greater than the second preset load rate threshold, it indicates that the load on the low-voltage distribution area is heavy. In this case, the third line equivalent scheme is used. This scheme uses a more refined line model or stricter equivalent conditions to ensure that high equivalence accuracy is maintained even under high load conditions.

[0087] Step S3032: In the case of the second data equivalent scenario, if the average load rate is less than or equal to the first preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the third load distribution equivalent scheme; if the average load rate is greater than the first preset load rate threshold and less than or equal to the second preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the first load distribution equivalent scheme; if the average load rate is greater than the second preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the second load distribution equivalent scheme.

[0088] Understandably, if the average load rate is less than or equal to the first preset load rate threshold, it indicates that the load distribution in the low-voltage distribution area is relatively dispersed and generally light, in which case the third load distribution equivalent scheme is adopted. If the average load rate is greater than the first preset load rate threshold but less than or equal to the second preset load rate threshold, it indicates that the load distribution in the low-voltage distribution area is at a moderate level, in which case the first load distribution equivalent scheme is adopted. If the average load rate is greater than the second preset load rate threshold, it indicates that the load distribution in the low-voltage distribution area is relatively concentrated and generally heavy, in which case the second load distribution equivalent scheme is adopted.

[0089] Step S3033: In the case of the third data equivalent scenario, if the average load rate is less than or equal to the first preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the first line equivalent scheme and the third load distribution equivalent scheme; if the average load rate is greater than the first preset load rate threshold and less than or equal to the second preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the third line equivalent scheme and the first load distribution equivalent scheme; if the average load rate is greater than the second preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the second line equivalent scheme and the second load distribution equivalent scheme.

[0090] Understandably, in the third data equivalence scenario, the selected combination of line load equivalence schemes is specifically targeted when the average load rate falls within different ranges. If the average load rate is less than or equal to the first preset load rate threshold, it indicates that the overall load of the low-voltage distribution area is relatively light and its distribution is relatively dispersed. In this case, a combination of the first line equivalence scheme and the third load distribution equivalence scheme is used. When the average load rate is greater than the first preset load rate threshold but less than or equal to the second preset load rate threshold, it indicates that the load is at a moderate level and its distribution is relatively balanced. In this case, a combination of the third line equivalence scheme and the first load distribution equivalence scheme is used, which can maintain equivalence accuracy while ensuring calculation efficiency. If the average load rate is greater than the second preset load rate threshold, it reflects that the load of the distribution area is heavy and its distribution is concentrated. In this case, a combination of the second line equivalence scheme and the second load distribution equivalence scheme is used to ensure equivalence accuracy under high load conditions.

[0091] The first equivalent scheme is as follows: based on the average impedance of all known branch lines in the low-voltage distribution area, determine the impedance value of the line from each user to the main line.

[0092] The first equivalent scheme uses an average equivalent method, where the impedance value from each user to the main line is set to be the same. In this case, the impedance value is the average of the impedances of other known branch lines in the distribution area.

[0093]

[0094] In the formula, L x L represents the equivalent impedance value of the x-th user, where X is the total number of users requiring equivalent impedance. ave The average impedance of other known branch lines in the transformer area.

[0095] The second equivalent scheme is as follows: based on the total equivalent load power of all users, the average impedance of all known branch lines in the low-voltage distribution area, and the known equivalent line length, determine the impedance value of the line from each user to the main line.

[0096] The equivalent length of the user's line to the main line is proportional to its load value; the larger the load value, the longer the equivalent length of the line. It is calculated using the total equivalent load power, the average impedance of all known branch lines in the low-voltage distribution area, and the known equivalent length of the line, as shown below:

[0097]

[0098] In the formula, P Lx Let x be the power consumption value of the xth user.

[0099] The third equivalent scheme is as follows: Based on the average power consumption of users and the average power consumption of low-voltage distribution areas, determine the equivalent average power consumption of users; based on the equivalent average power consumption of users and the minimum and maximum lengths of other known branch lines within the low-voltage distribution area, determine the total equivalent line length from all users to the main line; based on the total equivalent line length and the average impedance of all known branch lines in the low-voltage distribution area, determine the impedance value of the line from each user to the main line.

[0100] This method combines users distributed in similar areas into a single user set. Only the equivalent line length between this user set and the main line is considered. This equivalence ensures that the equivalent line length falls between the minimum and maximum line lengths for the distribution area. Furthermore, when the average power consumption of the equivalent users exceeds the average power consumption of the distribution area, the larger this value, the shorter the equivalent line length. This is primarily because when the load is high, an excessively long equivalent line would increase line losses and voltage errors. Shortening the equivalent line length neutralizes this deviation. Specifically, the total equivalent line length from all users to the main line is:

[0101]

[0102] In the formula, L SUM L represents the length of the line between the equivalent user set and the backbone. min and L max P represents the minimum and maximum lengths of other known branch lines within the transformer area, respectively. X,ave and P ave These are the average power consumption of equivalent users and the average power consumption of the transformer area, respectively. This represents the average power consumption of the equivalent user.

[0103] Then, by using the equivalent total length of all users to the trunk line and the average impedance of all known branch lines in the low-voltage distribution area, the line impedance value of each user to the trunk line can be further determined.

[0104] In specific calculations, the equivalent total line length is considered as the virtual path length from all users to the trunk line, and is allocated based on the known average impedance of branch lines. For example, when the equivalent total line length is L...SUM At that time, the equivalent impedance value L of the x-th user x It can be represented as:

[0105] L x =(L SUM / ΣL i )×L ave

[0106] Where, ΣL i This is the sum of the actual line lengths from all users within the transformer area to the main line. This calculation method considers both the distribution characteristics of line lengths and ensures the rationality of the equivalence through the average impedance.

[0107] The first equivalent load distribution scheme is as follows: based on the cumulative summation of user loads located in the same phase, it is equivalent to the first equivalent load, and the nodes of the first equivalent load are connected to the load nodes at the beginning of the grid of the low-voltage distribution area.

[0108] Among them, the user load located on the same phase refers to the sum of the electrical loads of all users on the same electrical phase in the low-voltage distribution area.

[0109] By summing the loads of users in the same phase, the total load for that phase can be obtained. The first equivalent load distribution scheme converts this total load into a single equivalent load and connects the nodes of this equivalent load to the load nodes at the beginning of the grid in the low-voltage distribution area. This simplifies the load distribution model, transforming the complex distribution of multiple user loads into an equivalent centralized load, facilitating subsequent analysis and calculation. For example, in a low-voltage distribution area, if multiple users are located in different positions but in the same phase, the first equivalent load distribution scheme can merge the loads of these users, effectively converting them into a single centralized load located at the beginning of the grid.

[0110] The second equivalent load distribution scheme is as follows: based on the cumulative summation of user loads located in the same phase, it is equivalent to a second equivalent load, and the nodes of the second equivalent load are connected to the load nodes at the middle of the grid of the low-voltage distribution area.

[0111] Similarly, after summing the loads of users in the same phase to obtain the total load for that phase, the second load distribution equivalent scheme equates this total load to a second equivalent load and connects the node of this equivalent load to the load node in the middle of the low-voltage distribution area's grid. Compared to the first load distribution equivalent scheme, this approach focuses more on reflecting the load distribution characteristics in the middle of the distribution area. For example, when some users in a low-voltage distribution area are concentrated in the central region and in the same phase, the second load distribution equivalent scheme can more accurately simulate the impact of these users on the lines in the middle of the distribution area, making the equivalent load distribution closer to the actual situation.

[0112] The third equivalent load distribution scheme is as follows: based on the cumulative summation of user loads located in the same phase, it is equivalent to a third equivalent load, and the nodes of the third equivalent load are connected to the load nodes at the end of the grid of the low-voltage distribution area.

[0113] Similarly, after summing the loads of users in the same phase to obtain the total load for that phase, the third load distribution equivalent scheme equates this total load to a third equivalent load, and connects the node of this equivalent load to the load node at the end of the low-voltage distribution area's grid. This scheme is more suitable for situations where the load is mainly concentrated at the end of the distribution area, and can more accurately reflect the impact of the end load on the line. For example, in a low-voltage distribution area, if there are a large number of users located at the end of the line and in the same phase, the third load distribution equivalent scheme can effectively simulate the load characteristics of these users on the end line, improving the accuracy of the equivalent model. By setting the equivalent load node at the end of the grid, the impact of the end load on voltage drop and line loss can be observed more intuitively.

[0114] In some embodiments, the data equivalent scenario is processed according to the line load equivalent scheme to obtain the line load equivalent result of the low-voltage distribution area, including:

[0115] Step S401: Equip the line parameters and load distribution parameters in the data equivalent scenario according to the line load equivalent scheme, and update the data equivalent scenario based on the equivalent line parameters and load distribution parameters to obtain the line load equivalent result of the low-voltage distribution area.

[0116] Among them, the line load equivalent scheme equivalences the line parameters and load distribution parameters in the data equivalent scenario. Specifically, it recalculates and adjusts the physical parameters of the line, such as impedance and length, to make them meet the requirements of the selected equivalent scheme.

[0117] For example, if the first equivalent line scheme is adopted, the impedance value of each user to the main line is uniformly set to the average value of the impedances of other known branch lines in the distribution area; if the second equivalent line scheme is adopted, the impedance value of each user is calculated based on the user's total equivalent load power, average impedance, and equivalent line length. At the same time, the load distribution parameters are equivalently processed. For example, according to the first equivalent load distribution scheme, the loads of users with the same phase are summed and equivalent to a centralized load, and its nodes are connected to the load nodes at the beginning of the grid.

[0118] In some embodiments, the method further includes:

[0119] Based on the equivalent line load results of the low-voltage distribution area, power flow calculations are performed on the branch lines of the low-voltage distribution area, and the voltage data of each branch line is determined based on the power flow calculation results.

[0120] This process involves constructing a power flow calculation model using equivalent line parameters and load distribution parameters. Key parameters such as equivalent line impedance, length, and equivalent load are input into the power flow calculation program. Based on fundamental power system principles and algorithms, the program simulates the flow of electricity in the branch lines of the low-voltage distribution area, calculating the voltage data for each branch line. This voltage data accurately reflects the voltage level of each branch line under given equivalent line load conditions, providing crucial data support for subsequent analysis of voltage quality, line losses, and equipment operating status in the low-voltage distribution area.

[0121] Based on the same inventive concept, this application also provides a low-voltage distribution area line load equivalent system for implementing the low-voltage distribution area line load equivalent method mentioned above.

[0122] The solution provided by this system is similar to the solution described in the above method. Therefore, the specific limitations of one or more low-voltage distribution area line load equivalent system embodiments provided below can be found in the limitations of the low-voltage distribution area line load equivalent method above, and will not be repeated here.

[0123] like Figure 6 As shown in the figure, this application embodiment also provides a low-voltage distribution area line load equivalent system, including:

[0124] Information acquisition module 100 is used to acquire line connection information and load distribution information of low-voltage distribution areas;

[0125] The equivalent scenario matching module 200 is used to match the data equivalent scenario corresponding to the low-voltage distribution area in the preset equivalent scenario library based on the line connection information and load distribution information; wherein, the data equivalent scenario is used to reflect the equivalent strategy under different unknown conditions of line and load distribution in the low-voltage distribution area.

[0126] The equivalent scheme matching module 300 is used to obtain the average load rate of the low-voltage distribution area, and match the line load equivalent scheme of the low-voltage distribution area in the preset equivalent scheme library based on the average load rate and data equivalent scenario.

[0127] The line load equivalence module 400 is used to perform equivalent processing on the data equivalent scenario according to the line load equivalence scheme to obtain the line load equivalence result of the low-voltage distribution area.

[0128] In some embodiments, the equivalent scene matching module 200 is used for:

[0129] Based on the line connection information and load distribution information, determine the unknown situations of line and load distribution in the low-voltage distribution area; among them, the unknown situations of line and load distribution include unknown connection methods of all users and trunk lines, unknown connection methods of some users and trunk lines, unknown line length, unknown location range of some users at all trunk line branch nodes, and unknown location range of some users at trunk line nodes.

[0130] Based on the unknown distribution of lines and loads in the low-voltage distribution area, the corresponding data equivalent scenario for the low-voltage distribution area is matched in the preset equivalent scenario library.

[0131] If the connection methods of all users and the backbone are unknown, and the line length is unknown, then the data equivalent scenario corresponding to the low-voltage distribution area is the first data equivalent scenario; the first data equivalent scenario is used only for line equivalence.

[0132] If the connection method and line length of some users are unknown, and the location range of some users at all branches of the main line is unknown, then the data equivalent scenario corresponding to the low-voltage distribution area is the second data equivalent scenario; the second data equivalent scenario is used only for load distribution equivalence.

[0133] If the location range of a user at a mainline node is unknown, the data equivalent scenario corresponding to the low-voltage distribution area is the third data equivalent scenario; the third data equivalent scenario is used to simultaneously represent the line and load distribution.

[0134] In some embodiments, the equivalent scheme matching module 300 is used for:

[0135] The load rate acquisition module is used to acquire the average load rate of the low-voltage distribution area, a first preset load rate threshold, and a second preset load rate threshold; wherein, the first preset load rate threshold is less than the second preset load rate threshold.

[0136] The load rate comparison module is used to compare the average load rate of the low-voltage distribution area with the first preset load rate threshold and the second preset load rate threshold to obtain the comparison result of the average load rate.

[0137] The scheme determination module is used to combine the comparison results of average load rate and data equivalent scenarios to match the line load equivalent scheme corresponding to the low-voltage distribution area in the preset equivalent scheme library.

[0138] In some embodiments, the scheme determination module is configured to:

[0139] In the case of the first data equivalent scenario, if the average load rate is less than or equal to the first preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the second line equivalent scheme; if the average load rate is greater than the first preset load rate threshold and less than or equal to the second preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the first line equivalent scheme; if the average load rate is greater than the second preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the third line equivalent scheme.

[0140] In the case of the second data equivalent scenario, if the average load rate is less than or equal to the first preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the third load distribution equivalent scheme; if the average load rate is greater than the first preset load rate threshold and less than or equal to the second preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the first load distribution equivalent scheme; if the average load rate is greater than the second preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the second load distribution equivalent scheme.

[0141] In the case of the third data equivalent scenario, if the average load rate is less than or equal to the first preset load rate threshold, the equivalent line load scheme for the low-voltage distribution area is the first line equivalent scheme and the third load distribution equivalent scheme; if the average load rate is greater than the first preset load rate threshold and less than or equal to the second preset load rate threshold, the equivalent line load scheme for the low-voltage distribution area is the third line equivalent scheme and the first load distribution equivalent scheme; if the average load rate is greater than the second preset load rate threshold, the equivalent line load scheme for the low-voltage distribution area is the second line equivalent scheme and the second load distribution equivalent scheme.

[0142] The first equivalent scheme is as follows: based on the average impedance of all known branch lines in the low-voltage distribution area, determine the impedance value of the line from each user to the main line.

[0143] The second equivalent scheme is as follows: Based on the total equivalent load power of all users, the average impedance of all known branch lines in the low-voltage distribution area, and the known equivalent length of the line, determine the impedance value of the line from each user to the main line.

[0144] The third equivalent scheme is as follows: Based on the average power consumption of users and the average power consumption of low-voltage distribution areas, determine the equivalent average power consumption of users; based on the equivalent average power consumption of users and the minimum and maximum lengths of other known branch lines within the low-voltage distribution area, determine the total equivalent line length from all users to the main line; based on the total equivalent line length and the average impedance of all known branch lines in the low-voltage distribution area, determine the impedance value of the line from each user to the main line.

[0145] The first equivalent load distribution scheme is as follows: based on the cumulative summation of user loads located in the same phase, it is equivalent to the first equivalent load, and the nodes of the first equivalent load are connected to the load nodes at the beginning of the grid of the low-voltage distribution area.

[0146] The second equivalent load distribution scheme is as follows: based on the cumulative summation of user loads located in the same phase, it is equivalent to a second equivalent load, and the nodes of the second equivalent load are connected to the load nodes at the middle of the grid of the low-voltage distribution area.

[0147] The third equivalent load distribution scheme is as follows: based on the cumulative summation of user loads located in the same phase, it is equivalent to a third equivalent load, and the nodes of the third equivalent load are connected to the load nodes at the end of the grid of the low-voltage distribution area.

[0148] In some embodiments, the line load equivalent module 400 is used for:

[0149] The line parameters and load distribution parameters in the data equivalent scenario are equivalent according to the line load equivalent scheme, and the data equivalent scenario is updated based on the equivalent line parameters and load distribution parameters to obtain the line load equivalent result of the low-voltage distribution area.

[0150] In some embodiments, the system further includes: a power flow calculation module, used for:

[0151] Based on the equivalent line load results of the low-voltage distribution area, power flow calculations are performed on the branch lines of the low-voltage distribution area, and the voltage data of each branch line is determined based on the power flow calculation results.

[0152] like Figure 7 As shown, this application provides an electronic device. The electronic device 10 includes a memory 20 and a processor 30. The memory 20 stores a computer program. When the computer program is executed by the processor 30, the processor 30 performs the steps of the low-voltage distribution area line load equivalent method as described in the above embodiment.

[0153] This application provides a computer-readable storage medium storing a computer program thereon, which, when executed, implements the steps of the low-voltage distribution area line load equivalent method as described in the above embodiments.

[0154] This application provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions, wherein when the program instructions are executed by a computer, the computer performs the steps of the low-voltage distribution area line load equivalent method as described in the above embodiments.

[0155] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, electronic devices, computer storage media, and computer program products described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0156] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0157] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0158] In the several embodiments provided by this invention, it should be understood that the disclosed systems, electronic devices, computer storage media, computer program products, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection between devices or units, and may be electrical, mechanical, or other forms.

[0159] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0160] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0161] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for executing all or part of the steps of the methods described in the various embodiments of the present invention through a computer device (which may be a personal computer, a server, or a network device, etc.). The aforementioned storage medium includes: USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, optical disks, and other media capable of storing program code.

[0162] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for equivalence of line load in a low-voltage distribution area, characterized in that, include: Obtain line connection information and load distribution information for low-voltage distribution areas; Based on the line connection information and the load distribution information, a data equivalent scenario corresponding to the low-voltage distribution area is matched in a preset equivalent scenario library; wherein, the data equivalent scenario is used to reflect the equivalent strategy under different unknown conditions of line and load distribution in the low-voltage distribution area; The average load rate of the low-voltage distribution area is obtained, and the line load equivalent scheme corresponding to the low-voltage distribution area is matched in the preset equivalent scheme library based on the average load rate and the data equivalent scenario. The data equivalent scenario is processed according to the line load equivalent scheme to obtain the line load equivalent result of the low-voltage distribution area.

2. The low-voltage distribution area line load equivalent method according to claim 1, characterized in that, The step of matching the data equivalent scenario corresponding to the low-voltage distribution area in a preset equivalent scenario library based on the line connection information and the load distribution information includes: Based on the line connection information and the load distribution information, the unknown situations of line and load distribution in the low-voltage distribution area are determined; wherein, the unknown situations of line and load distribution include unknown connection methods of all users and trunk lines, unknown connection methods of some users and trunk lines, unknown line length, unknown location range of some users at all trunk line branch nodes, and unknown location range of some users at trunk line nodes. Based on the unknown situation of the line and load distribution in the low-voltage distribution area, the data equivalent scenario corresponding to the low-voltage distribution area is matched in the preset equivalent scenario library; If the connection methods of all users and the backbone are unknown, and the line length is unknown, then the data equivalent scenario corresponding to the low-voltage distribution area is the first data equivalent scenario; wherein, the first data equivalent scenario is used only for line equivalence. If the connection method and line length of some users are unknown, and the location range of some users at all branches of the main line is unknown, then the data equivalent scenario corresponding to the low-voltage distribution area is the second data equivalent scenario; wherein, the second data equivalent scenario is used only for load distribution equivalence. If the location range of a user at a mainline node is unknown, the data equivalent scenario corresponding to the low-voltage distribution area is the third data equivalent scenario; wherein, the third data equivalent scenario is used to simultaneously represent the line and load distribution.

3. The low-voltage distribution area line load equivalent method according to claim 2, characterized in that, The step of obtaining the average load rate of the low-voltage distribution area, and matching the line load equivalent scheme corresponding to the low-voltage distribution area in a preset equivalent scheme library based on the average load rate and the data equivalent scenario, includes: The average load rate of the low-voltage distribution area, a first preset load rate threshold, and a second preset load rate threshold are obtained; wherein, the first preset load rate threshold is less than the second preset load rate threshold. The average load rate of the low-voltage distribution area is compared with the first preset load rate threshold and the second preset load rate threshold to obtain the comparison result of the average load rate; Based on the comparison results of the average load rate and the data equivalent scenario, the line load equivalent scheme corresponding to the low-voltage distribution area is matched in the preset equivalent scheme library.

4. The low-voltage distribution area line load equivalent method according to claim 3, characterized in that, The step of combining the comparison results of the average load rate and the data equivalent scenario, and matching the line load equivalent scheme corresponding to the low-voltage distribution area in the preset equivalent scheme library, includes: In the case where the data equivalent scenario is the first data equivalent scenario, if the average load rate is less than or equal to the first preset load rate threshold, then the line load equivalent scheme corresponding to the low-voltage distribution area is the second line equivalent scheme; if the average load rate is greater than the first preset load rate threshold and less than or equal to the second preset load rate threshold, then the line load equivalent scheme corresponding to the low-voltage distribution area is the first line equivalent scheme; if the average load rate is greater than the second preset load rate threshold, then the line load equivalent scheme corresponding to the low-voltage distribution area is the third line equivalent scheme. When the data equivalent scenario is the second data equivalent scenario, if the average load rate is less than or equal to the first preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the third load distribution equivalent scheme; if the average load rate is greater than the first preset load rate threshold and less than or equal to the second preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the first load distribution equivalent scheme; if the average load rate is greater than the second preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the second load distribution equivalent scheme. When the data equivalent scenario is the third data equivalent scenario, if the average load rate is less than or equal to the first preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the first line equivalent scheme and the third load distribution equivalent scheme; if the average load rate is greater than the first preset load rate threshold and less than or equal to the second preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the third line equivalent scheme and the first load distribution equivalent scheme; if the average load rate is greater than the second preset load rate threshold, the line load equivalent scheme corresponding to the low-voltage distribution area is the second line equivalent scheme and the second load distribution equivalent scheme. The first equivalent scheme is as follows: based on the average impedance of all known branch lines in the low-voltage distribution area, determine the impedance value of the line from each user to the main line. The second equivalent line scheme is as follows: based on the total equivalent load power of all users, the average impedance of all known branch lines in the low-voltage distribution area, and the known equivalent line length, determine the impedance value of the line from each user to the main line. The third equivalent line scheme is as follows: Based on the average power consumption of the users and the average power consumption of the low-voltage distribution area, determine the equivalent average power consumption of the users; based on the equivalent average power consumption of the users and the minimum and maximum lengths of other known branch lines within the low-voltage distribution area, determine the total equivalent line length from all users to the main line; based on the total equivalent line length and the average impedance of all known branch lines in the low-voltage distribution area, determine the impedance value of the line from each user to the main line. The first equivalent load distribution scheme is as follows: based on the cumulative summation of user loads located in the same phase, it is equivalent to the first equivalent load, and the nodes of the first equivalent load are connected to the load nodes at the beginning of the grid of the low-voltage distribution area. The second equivalent load distribution scheme is as follows: based on the cumulative summation of user loads located in the same phase, it is equivalent to a second equivalent load, and the nodes of the second equivalent load are connected to the load nodes at the middle of the grid of the low-voltage distribution area. The third equivalent load distribution scheme is as follows: based on the cumulative summation of user loads located in the same phase, it is equivalent to a third equivalent load, and the nodes of the third equivalent load are connected to the load nodes at the end of the grid of the low-voltage distribution area.

5. The low-voltage distribution area line load equivalent method according to claim 1 or 4, characterized in that, The step of performing equivalent processing on the data equivalent scenario according to the line load equivalent scheme to obtain the line load equivalent result of the low-voltage distribution area includes: The line parameters and load distribution parameters in the data equivalent scenario are equivalent according to the line load equivalent scheme, and the data equivalent scenario is updated based on the equivalent line parameters and load distribution parameters to obtain the line load equivalent result of the low-voltage distribution area.

6. The low-voltage distribution area line load equivalent method according to claim 5, characterized in that, Also includes: Based on the equivalent line load results of the low-voltage distribution area, power flow calculations are performed on the branch lines of the low-voltage distribution area, and the voltage data of each branch line is determined based on the power flow calculation results.

7. A low-voltage distribution area line load equivalent system, characterized in that, include: The information acquisition module is used to acquire line connection information and load distribution information of the low-voltage distribution area; The equivalent scenario matching module is used to match the data equivalent scenario corresponding to the low-voltage distribution area in a preset equivalent scenario library based on the line connection information and the load distribution information; wherein, the data equivalent scenario is used to reflect the equivalent strategy under different unknown conditions of line and load distribution in the low-voltage distribution area; The equivalent scheme matching module is used to obtain the average load rate of the low-voltage distribution area, and match the line load equivalent scheme corresponding to the low-voltage distribution area in the preset equivalent scheme library based on the average load rate and the data equivalent scenario. The line load equivalence module is used to perform equivalent processing on the data equivalent scenario according to the line load equivalence scheme to obtain the line load equivalence result of the low-voltage distribution area.

8. An electronic device, characterized in that, The electronic device includes a memory and a processor. The memory stores a computer program, which, when executed by the processor, causes the processor to perform the steps of the low-voltage distribution area line load equivalent method as described in any one of claims 1-6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed, it implements the steps of the low-voltage distribution area line load equivalent method as described in any one of claims 1-6.

10. A computer program product, characterized in that, The computer program product includes a computer program stored on a non-transitory computer-readable storage medium, the computer program including program instructions, wherein when the program instructions are executed by a computer, the computer performs the steps of the low-voltage distribution area line load equivalent method as described in any one of claims 1-6.

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