Distribution network architecture analysis method and system

Abstract

The present invention discloses a distribution network architecture analysis method, and discloses a system for implementing the method, wherein the distribution network architecture analysis method includes: distinguishing and displaying the types of distribution network lines; analyzing the rationality of the load distribution in each section of the line; analyzing the rationality of the distribution of the line distribution transformer; analyzing the rationality of the position of the connecting switch; outputting and displaying the analysis results. Through this method, it is realized to provide support for the optimization decision of the distribution network frame based on the network topology and measurement data. Through the multi-dimensional distribution network frame architecture analysis method, it is possible to quickly locate the lines with unreasonable architecture design in the distribution network, and display the unreasonable reasons in multiple dimensions, thereby providing auxiliary reference for power grid data management, and further improving the reliable power supply of the distribution network.

Description

Technical Field

[0001] The present invention relates to the field of power distribution analysis, and in particular to a distribution network architecture analysis method and system. Background Art

[0002] With the construction of smart grids, the scale of distribution network equipment is becoming larger and larger, the equipment connection and distribution are complex, and grid problems such as unbalanced load distribution, segmentation, and unreasonable location of interconnecting switches are prominent. The grid analysis of the entire distribution network still mainly relies on manual analysis and decision-making, resulting in problems such as huge workload and low efficiency. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a distribution network architecture analysis method, which can rely on the four-zone cloud master station of the distribution automation system and provide support for distribution network optimization decision-making based on network topology and measurement data.

[0004] The present invention also proposes a distribution network architecture analysis system for implementing the above distribution network architecture analysis method.

[0005] The present invention also proposes a computer device for implementing the above-mentioned distribution network architecture analysis method.

[0006] The present invention also provides a computer-readable storage medium.

[0007] According to a first aspect of the present invention, a distribution network architecture analysis method includes the following steps:

[0008] The following steps are involved:

[0009] Identify the line type of the distribution network grid structure;

[0010] Analyze the rationality of the load distribution of the distribution network grid structure according to the line type to obtain a first analysis result;

[0011] Analyze the rationality of the distribution of the line distribution transformers in the distribution network grid structure to obtain a second analysis result;

[0012] Analyzing the rationality of the tie switch position of the distribution network grid structure to obtain a third analysis result;

[0013] The first analysis result, the second analysis result and the third analysis result are output and displayed.

[0014] According to some embodiments of the present invention, analyzing the rationality of load distribution of the distribution network grid structure according to the line type to obtain a first analysis result includes:

[0015] When the line type is an overhead line type, the distribution line is divided into sections according to the main line section switch, and based on the outgoing line switch current and the section switch current of each section, the load size and proportion of each section of the line are calculated to obtain the first analysis result;

[0016] When the line type is a mixed overhead and cable line type, the sections are divided according to the main line section switches and ring network cabinets, and based on the outgoing line switch currents, section switch currents and ring network cabinet currents of each section, the load size and proportion carried by each section of the line are calculated to obtain the first analysis result.

[0017] According to some embodiments of the present invention, the analyzing the rationality of the distribution of the line distribution transformers in the distribution network grid structure to obtain a second analysis result includes:

[0018] Counting the total number of distribution transformers connected to the distribution line to obtain the first number of distribution transformers;

[0019] Count the total number of distribution transformers connected between any two adjacent section switches of all distribution trunk lines to obtain the number of second distribution transformers;

[0020] Count the number of distribution transformers connected to all branch line switches to obtain the number of third distribution transformers;

[0021] Calculate the actual proportion of the number of distribution transformers in each section according to the number of the first distribution transformers, the number of the second distribution transformers and the number of the third distribution transformers;

[0022] Count the number of main line section switches and / or main line ring main cabinets;

[0023] According to the number of main line segment switches and the number of main line ring network cabinets, calculate the reasonable proportion of distribution transformers in each section;

[0024] According to the actual proportion of the number of distribution transformers in each section and the reasonable proportion of the number of distribution transformers in each section, the line details with unreasonable proportion of the number of distribution transformers in each section and the proportion of the number of distribution transformers in each section are counted to obtain the second analysis result.

[0025] According to some embodiments of the present invention, the analyzing the rationality of the distribution of the line distribution transformers in the distribution network grid structure to obtain the second analysis result further includes:

[0026] Counting the total capacity of the distribution transformers connected in the distribution line to obtain the first distribution transformer capacity;

[0027] Count the total capacity of the distribution transformers connected between any two adjacent section switches of all distribution trunk lines to obtain the second distribution transformer capacity;

[0028] Count the capacity of distribution transformers connected to all branch line switches to obtain the third distribution transformer capacity;

[0029] Calculate the actual distribution transformer capacity ratio of each section and each branch line according to the first distribution transformer capacity, the second distribution transformer capacity and the third distribution transformer capacity;

[0030] Count the number of main line section switches and main line ring network cabinets;

[0031] According to the number of main line segment switches and the number of main line ring network cabinets, calculate the reasonable proportion of distribution transformer capacity in each section;

[0032] According to the actual distribution transformer capacity ratio of each section and the reasonable distribution transformer capacity ratio of each section, the line details with unreasonable distribution transformer capacity ratio of each section and the distribution transformer capacity ratio of each section are counted to obtain the second analysis result.

[0033] According to some embodiments of the present invention, the analyzing the rationality of the tie switch position of the distribution network grid structure to obtain a third analysis result includes:

[0034] Count, identify and distinguish the number and location of contact switches;

[0035] Count the line details and the number of tie switches in the first section;

[0036] The line with a single tie and a tie switch in the first section is marked as having an unreasonable tie switch position, and the third analysis result is obtained.

[0037] According to some embodiments of the present invention, when the line type is an overhead line type, the distribution line is divided into sections according to the main line sectioning switch, and the load size and proportion of each section of the line are calculated based on the outgoing line and section switch current of each section, and the first analysis result is obtained, including:

[0038] Obtain outgoing line current and section switch current of each section;

[0039] According to the outgoing line current and the switching current of each section, the actual load size and proportion of each section of the line are calculated and displayed;

[0040] Count the number of main line section switches;

[0041] According to the number of switches in the main line of the line, calculate the reasonable load proportion of each section;

[0042] According to the actual load proportion of each section of the line and the reasonable load proportion of each section, the details of the line with unreasonable load proportion and the load proportion of each section are counted to obtain the first analysis result.

[0043] According to some embodiments of the present invention, when the line type is a mixed overhead and cable line type, the sections are divided according to the main line section switch and the ring network cabinet, and based on the outgoing line, section switch and ring network cabinet current of each section, the load size and proportion of each section of the line are calculated to obtain the first analysis result, including:

[0044] Obtain outgoing line current, section switch current of each section and current of each ring main unit;

[0045] According to the outgoing line current, the sectionalized switch current of each section and the current of each ring main unit, the actual load size and proportion of each section of the line are calculated and displayed;

[0046] Count the number of main line section switches and main line ring main cabinets;

[0047] According to the number of main line section switches and the number of main line ring network cabinets, calculate the reasonable load proportion of each section;

[0048] According to the actual load proportion of each section of the line and the reasonable load proportion of each section, the details of the line with unreasonable load proportion and the load proportion of each section are counted.

[0049] A distribution network architecture analysis system according to an embodiment of a second aspect of the present invention includes:

[0050] Grid analysis profile module, used to identify the line type of the distribution network grid structure;

[0051] A grid analysis details module is used to analyze the rationality of the load distribution of the distribution network grid structure according to the line type to obtain a first analysis result; and analyze the rationality of the distribution of the line distribution transformers of the distribution network grid structure to obtain a second analysis result;

[0052] A line and wire diagram module is used to analyze the rationality of the tie switch position of the distribution network grid structure to obtain a third analysis result;

[0053] The evaluation summary and verification information module is used to output and display the first analysis result, the second analysis result and the third analysis result.

[0054] A computer device according to an embodiment of a third aspect of the present invention includes:

[0055] one or more processors;

[0056] Memory;

[0057] One or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and when the programs are executed by the processors, the steps of the distribution network architecture analysis method as described in any one of the above embodiments are implemented.

[0058] According to a fourth aspect of an embodiment of the present invention, a computer-readable storage medium stores a computer program thereon, wherein when the computer program is executed by a processor, the steps of the distribution network architecture analysis method as described in any one of the above embodiments are implemented.

[0059] A distribution network architecture analysis method and system according to an embodiment of the present invention has at least the following beneficial effects: by analyzing the rationality of load distribution, analyzing the rationality of line distribution transformer distribution, and analyzing the rationality of the location of the interconnecting switch, the distribution network line architecture is analyzed from these three different dimensions, and the problematic line parts are listed, thereby providing a comprehensive evaluation basis for the intelligent analysis of the distribution network grid, and providing theoretical support for the optimization decision of the distribution network grid. Through the multi-dimensional distribution network architecture analysis method, the lines with unreasonable architecture design in the distribution network can be quickly located, and the unreasonable reasons can be displayed in multiple dimensions, thereby providing auxiliary reference for power grid data governance, and further improving the reliable power supply of the distribution network.

[0060] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0062] Figure 1 A schematic diagram of the overall steps of the distribution network architecture analysis method according to an embodiment of the present invention;

[0063] Figure 2 A circuit diagram of an overhead line type in a distribution network;

[0064] Figure 3 A circuit diagram of a mixed overhead and cable line type in a distribution network with the first section being an overhead line;

[0065] Figure 4 This is a circuit diagram of a mixed overhead and cable line type in a distribution network with the first section being a cable line. DETAILED DESCRIPTION

[0066] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0067] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0068] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0069] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0070] The following is combined with Figure 1-4 , describe in detail the distribution network architecture analysis method and system of the embodiments of the present invention.

[0071] Reference Figure 1 The present invention proposes a distribution network architecture analysis method, comprising:

[0072] Step S100: Identify the line type of the distribution network grid structure;

[0073] Step S200: Analyze the rationality of load distribution of the distribution network structure according to the line type to obtain a first analysis result;

[0074] Step S300: Analyze the rationality of the distribution of the line distribution transformers in the distribution network grid structure to obtain a second analysis result;

[0075] Step S400: Analyze the rationality of the tie switch position of the distribution network grid structure to obtain a third analysis result;

[0076] Step S500: output and display the first analysis result, the second analysis result and the third analysis result.

[0077] Specifically, in this embodiment, S100: Identify the line type of the distribution network grid structure, the line type in the distribution network includes: overhead line type, overhead and cable mixed line type, cable line type. According to the structural characteristics of these three different types of distribution lines, the overhead line type has overhead line distribution equipment such as section switches; the overhead and cable mixed line type has both overhead line distribution components such as section switches and cable line distribution equipment such as ring network cabinets; the cable line type only has cable line distribution equipment such as ring network cabinets. Therefore, when judging the distribution line type of the distribution network to be analyzed, it can be distinguished according to the distribution equipment set on the distribution network to be analyzed whether the distribution network to be analyzed belongs to the overhead line type, the overhead and cable mixed line type or the cable line type, thereby providing different distribution network architecture analysis operations according to different distribution network line types, making the architecture analysis of the distribution network more comprehensive.

[0078] S200: Analyze the rationality of the load distribution of the distribution network grid structure according to the line type to obtain the first analysis result, which means that according to the overhead or overhead and cable mixed line types distinguished in S100, the rationality of the load distribution of each section of the line is analyzed. Specifically, for the overhead or overhead and cable mixed line types, the load distribution size and proportion of each section are calculated and analyzed based on the current of the outgoing line switch and the section switch, so as to judge whether the line load is balanced and whether the layout of the section switch is reasonable; as for the cable line type among all line types, since the distribution network of the cable line type often has many ring network cabinets, the ring network cabinet plays the role of separating sections in the cable line, and the positions of all ring network cabinets in the cable line are fixed and the number of ring network cabinets is sufficient, the cable line is usually divided into sufficiently small sections. Therefore, there is no need to analyze the rationality of the load distribution of the circuit sections of the cable line separated by the section switch. By analyzing the rationality of the load distribution in each section of the distribution line, we can ensure that the distribution line has a reasonable load distribution, avoid excessive load on certain lines or equipment, thereby reducing equipment failures and safety accidents caused by overload, and ensure the reliability of the power supply system; balanced load distribution can also help reduce the loss of electric energy during transmission, help improve the operating efficiency of the distribution system, and improve the voltage stability of the distribution system; reasonable load distribution can also enhance the flexibility and adaptability of the system, enhance the robustness of the distribution system, and ensure the stable operation of the distribution system; in addition, the calculation results of load distribution are an important basis for guiding the planning and transformation of the distribution network, and help optimize equipment selection and operation strategies, so as to achieve economical and efficient power supply.

[0079] S300: Analyze the rationality of the distribution of distribution transformers in the distribution network grid structure to obtain the second analysis result, which means determining whether the distribution of distribution transformers in each section is reasonable based on the proportion of the number and capacity of distribution transformers in each section of the main line and each branch switch in the distribution line to the total number and total capacity of distribution transformers in the distribution network line, thereby guiding the rational configuration of distribution transformers in each section of the line. By rationally arranging distribution transformers, the grid structure can be optimized, overload conditions can be reduced, and thus the reliability of power supply and the stability of the system can be improved. Reasonable distribution of transformers can ensure that the grid can operate efficiently under different load conditions, avoiding equipment damage and power supply interruptions caused by local overloads. Reasonable distribution of distribution transformers helps to reduce the total loss of the grid, including transformer loss and loss of electrical equipment. By guiding and optimizing the location and number of transformers, energy loss during power transmission can be reduced, thereby improving the overall energy efficiency of the grid. Reasonable distribution of transformers enables distribution lines to be flexibly connected and instantaneous faults to be quickly isolated, thereby improving the coping ability and safety of the grid system, enabling the grid to quickly respond to various emergencies and ensure the continuity of power supply. In addition, by rationally dividing the area and rationally configuring the transformer according to the load structure, balanced load distribution can be achieved, thereby improving the operating efficiency of the system. This load balancing helps to optimize power supply scheduling, thereby meeting the user needs of different areas and users.

[0080] S400: Analyze the rationality of the location of the connecting switch of the distribution network grid structure to obtain the third analysis result, which means that according to the line topology, the number and details of the lines with single connection and the connecting switch in the first section and multiple connections and the connecting switch in the first section are respectively counted, so as to analyze whether the location of the connecting switch is reasonable. The line connection effectiveness analysis rules include: identifying and distinguishing the location and quantity of the connecting switches, analyzing the line without connection, the first section of connection, the number of connecting switches, whether the line is connected with the same bus, whether the line is connected with different buses at the same station, etc. For lines without connection, no connecting switches in the middle and rear sections, connection with the same bus, and connection with different buses at the same station, it is determined that the connection is unreasonable. In particular, the line with a single connection and the connecting switch in the first section is marked as unreasonable. Specifically, the role of the tie switch in the distribution network is to connect two distribution lines. When one of the lines fails, the tie switch can transfer the load to the other line, thereby reducing the impact of the power outage. Among them, a single tie line refers to a line connecting two substations or different bus sections of a substation. This line structure is relatively simple, but the reliability is low; multiple tie lines are a more complex wiring mode, which is interconnected through multiple lines to form a more reliable power grid structure. Therefore, when analyzing the rationality of the position of the line tie switch, the focus should be on the single tie line. Generally, in a single-tie line, when a line fails, if the fault point is not in the first section, power can be supplied to the non-fault first section by isolating the fault point, and the outgoing line switch of this line can be used to supply power; for a line with a single tie and the tie switch in the first section, when a line fails, neither the outgoing line switch of this line nor the tie switch can supply power to the non-fault section of the line, so the line with a single tie and the tie switch in the first section is unreasonable. Therefore, this function needs to list the line details and the number of ties with tie switches in the first section, and mark the line with a single tie and the tie switch in the first section as unreasonable. This analysis method can provide a basis for rectification for a more reasonable distribution of the grid and a more intelligent line.

[0081] S500: Outputting and displaying the first analysis result, the second analysis result and the third analysis result refers to using modern power design software, automation tools and other technical means to display in the system all data and fields related to the analysis results of the rationality judgment of the distribution network obtained based on steps S100, S200, S300 and S400.

[0082] Further, in some embodiments of the present invention, step S200: analyzing the rationality of load distribution of the distribution network grid structure according to the line type to obtain a first analysis result includes:

[0083] Step S210: When the line type is an overhead line type, the distribution line is divided into sections according to the main line section switch, and based on the outgoing line switch current and the section switch current of each section, the load size and proportion of each section of the line are calculated to obtain a first analysis result;

[0084] Step S220: When the line type is a mixed overhead and cable line type, the sections are divided according to the main line section switches and ring main units, and based on the outgoing line switch current, section switch current and ring main unit current of each section, the load size and proportion of each section of the line are calculated to obtain the first analysis result.

[0085] Specifically, in this embodiment, for step S210: when the line type is an overhead line type, the distribution line is divided into sections according to the main line sectioning switch, and based on the outgoing line and section switch current of each section, the load size and proportion of each section of the line are calculated to obtain the first analysis result, which means that since the distribution line of the overhead line type is divided into sections according to the sectioning switches in the line, therefore, if the load rationality of each section of the line is to be analyzed, it is first necessary to divide the line into several sections according to the main line switch, and the section between every two adjacent main line sectioning switches is a line section. For example, refer to Figure 3 The overhead line type shown in FIG. 1 is a diagram of a line type, wherein A1 and A2 are main line section switches, B1, B2, and B3 are line user boundary switches, S1 is an outgoing line switch, and A3, A4, and A5 are line contact switches. The two main line section switches A1 and A2 divide the main line into three sections, namely: S1-A1, A1-A2, and A2-A5. Then, the current meter set on the section switch is used to obtain the outgoing line current or the section switch current of each section and upload it to the system remotely. The actual load size and proportion of the section are calculated and displayed in the system based on the difference between the adjacent outgoing line currents or section switch currents. Then, the proportion of the actual load is compared with the reasonable load distribution proportion interval. If the proportion of the actual load is not within the reasonable load distribution proportion interval, it means that the proportion of the load carried by the section is unreasonable, that is, the load distribution of the line where the section is located is unreasonable.

[0086] For step S220: when the line type is a mixed overhead and cable line type, the sections are divided according to the main line segmentation switch and the ring network cabinet, and based on the outgoing line, segmentation switch and ring network cabinet current of each section, the load size and proportion of each section of the line are calculated to obtain the first analysis result, which means that since the distribution line of the mixed overhead and cable line type is divided into sections according to the segmentation switch and ring network cabinet in the line, therefore, if you want to perform load rationality analysis on each section of the line, you first need to divide the line into several sections according to the main line segmentation switch and the ring network cabinet, and the section between every two adjacent main line segmentation switches and / or ring network cabinets is a line section. For example, refer to Figure 3The first section shown is an overhead and cable mixed line type of overhead line, where S1 is the outgoing line switch, A1 is the section switch, HW1 and HW2 are ring network cabinets, A5 is the tie switch, B1 and B2 are user boundary switches. These two ring network cabinets and one section switch divide the main line into four sections, namely: S1-A1, A1-HW1_01, HW1_01-HW2_01, HW2_01-A5; similarly, refer to Figure 4 The first section shown is an overhead and cable mixed line type of the cable line, in which S1 is the outgoing line switch, A1 is the section switch, HW1 and HW2 are ring network cabinets, A5 is the connecting switch, and B1 is the user boundary switch. These two ring network cabinets and one section switch together divide the main line into three sections, namely: HW1_01-HW2_01, HW2_01-A1, and A1-A5. Then, the current measuring device inside the ring main unit and the ammeter installed on the section switch are used to obtain the outgoing line current or section switch current of each section and upload it to the system remotely. The actual load size and proportion of the section are calculated and displayed in the system according to the difference between adjacent outgoing line currents or section switch currents or ring main unit currents. Then, the actual load proportion is compared with the reasonable load distribution proportion range. If the actual load proportion is not within the reasonable load distribution proportion range, it means that the load proportion of the section is unreasonable, that is, the load distribution of the line where the section is located is unreasonable. In particular, there are two different calculation methods for the reasonable load distribution proportion range for overhead line types and for overhead and cable mixed line types.

[0087] Further, in some embodiments of the present invention, S300: analyzing the rationality of the distribution of the line distribution transformers in the distribution network grid structure to obtain a second analysis result includes:

[0088] Step S310: Count the total number of distribution transformers connected to the distribution line to obtain a first number of distribution transformers;

[0089] Step S320: Count the total number of distribution transformers connected between any two adjacent sectionalizers or ring network cabinets of all distribution trunk lines to obtain a second number of distribution transformers;

[0090] Step S330: Count the number of distribution transformers connected to all branch line switches to obtain the third number of distribution transformers;

[0091] Step S340: Calculate the actual proportion of the number of distribution transformers in each section according to the number of first distribution transformers, the number of second distribution transformers and the number of third distribution transformers;

[0092] Step S350: Counting the number of main line segment switches and / or the number of main line ring main units;

[0093] Step S360: Calculate the reasonable proportion of distribution transformers in each section according to the number of main line segment switches and the number of main line ring network cabinets;

[0094] Step S370: According to the actual proportion of the number of distribution transformers in each section and the reasonable proportion of the number of distribution transformers in each section, the line details of the unreasonable proportion of the number of distribution transformers in each section and the proportion of the number of distribution transformers in each section are counted to obtain the second analysis result.

[0095] Specifically, in this embodiment, step S310: counting the total number of distribution transformers connected in the distribution line to obtain the first number of distribution transformers means that by consulting the design documents or reports of the distribution line, or using modern power design software and automation tools, combined with the load calculation of the distribution line and the transformer capacity and other related calculation formulas and parameters, the total number of all distribution transformers connected in all single distribution lines is automatically calculated or counted, and displayed in the system, and this number is obtained as the first number of distribution transformers P1. For example, referring to Figure 3 , the first distribution transformer quantity P1 refers to the total number of distribution transformers connected to the outgoing line switch S1. In addition, in this step, in addition to the first distribution transformer quantity, the system also lists the line name, line unit, line substation, line public transformer quantity, line special transformer quantity and other fields.

[0096] Step S320: Counting the total number of distribution transformers connected between any two adjacent sectionalizing switches of all distribution trunk lines to obtain the second number of distribution transformers means that by consulting the design documents or reports of the distribution lines, or using modern power design software and automation tools, combined with the load calculation of the distribution lines and the transformer capacity and other related calculation formulas and parameters, the total number of distribution transformers connected between any two adjacent sectionalizing switches in all single distribution trunk lines is automatically calculated or counted, and displayed in the system, and this number is obtained as the second number of distribution transformers P2. For example, referring to Figure 3 , the second distribution transformer quantity P2 refers to the number of distribution transformers connected to the sections S1-A1, A1-A2, and A2-A5. In addition, in this step, in addition to the second distribution transformer quantity, the system also lists the fields including the name of the front section switch, the name of the rear section switch, the unit to which the section belongs, the substation to which the section belongs, the line to which the section belongs, the number of public transformers in the section, and the number of special transformers in the section.

[0097] Step S330: Counting the number of distribution transformers connected to all branch switches to obtain the third number of distribution transformers means that by consulting the design documents or reports of the distribution line, or using modern power design software and automation tools, combined with the load calculation of the distribution line and the transformer capacity and other related calculation formulas and parameters, the total number of distribution transformers connected to the branch line separated by any branch switch in all single distribution main lines is automatically calculated or counted, and displayed in the system, and this number is obtained as the third number of distribution transformers P3. For example, referring to Figure 3 , the third distribution transformer quantity P3 refers to the number of distribution transformers connected to the branch where switch B1 is located, the branch where switch B2 is located, the branch where switch B3 is located, and the branch where switch B4 is located. In addition, in this step, in addition to the third distribution transformer quantity, fields including branch switch name, branch affiliated unit, branch affiliated substation, branch affiliated line, number of public transformers in the branch, number of special transformers in the branch, etc. are also listed in the system accordingly.

[0098] Step S340: Calculate the actual proportion of the number of distribution transformers in each section and each branch line according to the first number of distribution transformers, the second number of distribution transformers and the third number of distribution transformers, which means that the actual proportion of the number of distribution transformers in each section and each branch line is calculated by a computer system in combination with the first number of distribution transformers P1, the second number of distribution transformers P2 and the third number of distribution transformers P3. Specifically, the actual proportion of the number of distribution transformers in each section is P2 / P1, and the actual proportion of the number of distribution transformers in each branch line is P3 / P1 or P3 / P2, and the proportion data are displayed and listed in the system.

[0099] Step S350: Counting the number of main line section switches and / or main line ring main unit means automatically counting the number N of main line section switches and the number M of main line ring main unit by referring to the design documents or reports of the distribution lines, or using modern power design software and automation tools, and displaying them in the system.

[0100] Step S360: Calculate the reasonable proportion of distribution transformers in each section according to the number of main line segment switches and the number of main line ring network cabinets, which means that according to the number of main line segment switches N and the number of main line ring network cabinets M counted in step S350, it is obvious that the number of sections into which the line is divided is N+M+1 or N+M, and the reasonable proportion of distribution transformers in each section is 1 / [(N+M+1)*X] or 1 / [(N+M)*X], where the value range of X is [0.8,1.2]. If the proportion of distribution transformers is not within this range, it is considered that the number distribution of the section is unreasonable. More specifically, refer to Figure 2 and Figure 3, when the line type is an overhead line type, or the first section is an overhead and cable mixed line type, it can be determined that the number of sections the line is divided into is N+M+1. Correspondingly, the reasonable number of distribution transformers in each section is 1 / [(N+M+1)*X], where the value range of X is [0.8,1.2]; refer to Figure 4 When the line type is an overhead and cable mixed line type with the first section being a cable line, it can be determined that the number of sections the line is divided into is N+M. Correspondingly, the reasonable number of distribution transformers in each section is in the range of 1 / [(N+M)*X], where the value range of X is [0.8,1.2].

[0101] Step S370: According to the actual proportion of the number of distribution transformers in each section and the reasonable proportion of the number of distribution transformers in each section, the line details of the unreasonable proportion of the number of distribution transformers in each section and the proportion of the number of distribution transformers in each section are counted to obtain the second analysis result, which means that according to the actual proportion of the number of distribution transformers P2 / P1 of each section counted in step S340, compared with the reasonable proportion of the number of distribution transformers in each section calculated in step S360, if the actual proportion of the number of distribution transformers in a section is not within the reasonable proportion of the number of distribution transformers, the section is marked as a section with unreasonable proportion of the number of distribution transformers, and the line details of the unreasonable proportion of the number of distribution transformers and the proportion of the number of distribution transformers in each section are displayed in the system, so as to obtain the second analysis result. Further, based on the actual proportion of the number of distribution transformers of each branch calculated and displayed in step S340, it is also possible to further assist in analyzing in each section whether the number of distribution transformers connected to each branch contained in the section is reasonable.

[0102] Through the above steps, the number of distribution transformers carried by the whole line, each section of the main line, and the branch switches is calculated and analyzed, so as to analyze the rationality of the distribution of the line distribution transformers, thereby indirectly assisting in analyzing the rationality of the line load distribution, that is, the rationality of the line load distribution can be analyzed from the dimension of the number of distribution transformers carried by the line.

[0103] Further, in some embodiments of the present invention, S300: analyzing the rationality of the distribution of the line distribution transformers in the distribution network grid structure to obtain a second analysis result, further includes:

[0104] Step S310a: Counting the total capacity of distribution transformers connected to the distribution line to obtain a first distribution transformer capacity;

[0105] Step S320a: Count the total capacity of the distribution transformers connected between any two adjacent sectionalizers of all distribution trunk lines to obtain a second distribution transformer capacity;

[0106] Step S330a: Count the capacities of distribution transformers connected to all branch line switches to obtain a third distribution transformer capacity;

[0107] Step S340a: Calculate the actual distribution transformer capacity ratio of each section and each branch line according to the first distribution transformer capacity, the second distribution transformer capacity and the third distribution transformer capacity;

[0108] Step S350a: Counting the number of main line segment switches and / or the number of main line ring main units;

[0109] Step S360a: Calculate the reasonable distribution transformer capacity ratio of each section according to the number of main line segment switches and the number of main line ring network cabinets;

[0110] Step S370a: According to the actual distribution transformer capacity ratio of each section and the reasonable distribution transformer capacity ratio of each section, the line details of the unreasonable distribution transformer capacity ratio of each section and the distribution transformer capacity ratio of each section are counted to obtain the second analysis result.

[0111] Specifically, in this embodiment, step S310a: counting the total capacity of the distribution transformers connected in the distribution line to obtain the first distribution transformer capacity means that by consulting the design documents or reports of the distribution line, or using modern power design software and automation tools, combined with the load calculation of the distribution line and the transformer capacity and other related calculation formulas and parameters, the total capacity of all the distribution transformers connected in all single distribution lines is automatically calculated or counted, and displayed in the system, and this capacity is obtained as the first distribution transformer capacity P1. For example, referring to Figure 3 , the first distribution transformer capacity P1 refers to the total capacity of the distribution transformer connected to the outgoing switch S1. In addition, in this step, in addition to the first distribution transformer capacity, the system also lists the line name, line unit, line substation, line public transformer capacity, line special transformer capacity and other fields.

[0112] Step S320a: Counting the total capacity of the distribution transformers connected between any two adjacent sectionalizing switches of all distribution trunk lines to obtain the second distribution transformer capacity, means that by consulting the design documents or reports of the distribution line, or using modern power design software and automation tools, combined with the load calculation of the distribution line and the transformer capacity and other related calculation formulas and parameters, the total capacity of the distribution transformers connected between any two adjacent sectionalizing switches in all single distribution trunk lines is automatically calculated or counted, and displayed in the system, and this capacity is obtained as the second distribution transformer capacity P2. For example, referring to Figure 3 , the second distribution transformer capacity P2 refers to the capacity of the distribution transformers connected to the sections S1-A1, A1-A2 and A2-A5. In addition, in this step, in addition to the second distribution transformer capacity, the system also lists the fields including the name of the front section switch, the name of the rear section switch, the unit to which the section belongs, the substation to which the section belongs, the line to which the section belongs, the public transformer capacity in the section, and the special transformer capacity in the section.

[0113] Step S330a: Counting the capacity of distribution transformers connected to all branch switches to obtain the third distribution transformer capacity means that by consulting the design documents or reports of the distribution line, or using modern power design software and automation tools, combined with the load calculation of the distribution line and the transformer capacity and other related calculation formulas and parameters, the total capacity of the distribution transformers connected to the branch lines separated by any branch switch in all single distribution main lines is automatically calculated or counted, and displayed in the system, and this capacity is obtained as the third distribution transformer capacity P3. For example, referring to Figure 3 , the third distribution transformer capacity P3 refers to the capacity of the distribution transformers connected to the branch where switch B1 is located, the branch where switch B2 is located, the branch where switch B3 is located, and the branch where switch B4 is located. In addition, in this step, in addition to the third distribution transformer capacity, the system also lists the fields including branch switch name, branch affiliated unit, branch affiliated substation, branch affiliated line, public transformer capacity in the branch, and special transformer capacity in the branch.

[0114] Step S340a: Calculate the actual distribution transformer capacity ratio of each section and each branch line according to the first distribution transformer capacity, the second distribution transformer capacity and the third distribution transformer capacity, which means that, in combination with the first distribution transformer capacity P1, the second distribution transformer capacity P2 and the third distribution transformer capacity P3, the actual distribution transformer capacity ratio of each section and each branch line is calculated by a computer system. Specifically, the actual distribution transformer capacity ratio of each section is P2 / P1, and the actual distribution transformer capacity ratio of each branch line is P3 / P1 or P3 / P2, and the data of each ratio is displayed and listed in the system.

[0115] Step S350a: Counting the number of main line section switches and / or main line ring main unit means automatically counting the number N of main line section switches and the number M of main line ring main unit by referring to the design documents or reports of the distribution lines, or using modern power design software and automation tools, and displaying them in the system.

[0116] Step S360a: According to the number of main line segment switches and the number of main line ring network cabinets, calculate the reasonable distribution transformer capacity ratio of each section to obtain the second analysis result, which means that according to the number of main line segment switches N and the number of main line ring network cabinets M counted in step S350a, it is obvious that the number of sections into which the line is divided is N+M+1, and the reasonable distribution transformer capacity ratio of each section is 1 / [(N+M+1)*X], where the value range of X is [0.8,1.2]. If the distribution transformer capacity ratio is not within this range, it is considered that the capacity distribution of the section is unreasonable. More specifically, refer to Figure 2 and Figure 3, when the line type is an overhead line type, or the first section is an overhead and cable mixed line type, it can be determined that the number of sections the line is divided into is N+M+1. Correspondingly, the reasonable capacity ratio of each section of the distribution transformer is 1 / [(N+M+1)*X] or 1 / [(N+M)*X], where the value range of X is [0.8,1.2]; refer to Figure 4 When the line type is an overhead and cable mixed line type with the first section being a cable line, it can be determined that the number of sections the line is divided into is N+M. Correspondingly, the reasonable capacity proportion interval of the distribution transformer in each section is 1 / [(N+M)*X], where the value range of X is [0.8,1.2].

[0117] Step S370a: According to the actual distribution transformer capacity ratio of each section and the reasonable distribution transformer capacity ratio of each section, the line details of the unreasonable distribution transformer capacity ratio of each section and the distribution transformer capacity ratio of each section are counted, which means that according to the actual distribution transformer capacity ratio P2 / P1 of each section counted in step S340a, it is compared with the reasonable distribution transformer capacity ratio interval of each section calculated in step S360a. If the actual distribution transformer capacity ratio of a section is not within the reasonable distribution transformer capacity ratio interval, the section is marked as a section with unreasonable distribution transformer capacity ratio, and the line details of the unreasonable distribution transformer capacity ratio and the distribution transformer capacity ratio of each section are displayed in the system. Furthermore, based on the actual distribution transformer capacity ratio of each branch calculated and displayed in step S340a, it is also possible to further assist in analyzing in each section whether the distribution transformer capacity connected to each branch contained in the section is reasonable.

[0118] Through the above steps, the capacity of the distribution transformers of the whole line, each section of the main line, and the branch switches is calculated and analyzed, so as to analyze the rationality of the distribution of the line distribution transformers, thereby indirectly assisting in analyzing the rationality of the line load distribution, that is, the rationality of the line load distribution can be analyzed from the dimension of the distribution transformer capacity of the line.

[0119] Reference Figure 1 Further, in some embodiments of the present invention, S400: analyzing the rationality of the tie switch position of the distribution network grid structure to obtain a third analysis result, including:

[0120] S410: Count, identify and distinguish the number and location of the tie switches;

[0121] S420: Count the line details and the number of tie switches in the first section;

[0122] S430: It is unreasonable to mark the tie switch position for a line with a single tie and a tie switch in the first section.

[0123] Specifically, in this embodiment, S410: counting, identifying and distinguishing the number and positions of tie switches refers to conducting a preliminary analysis of the effectiveness of the tie switches in the line by consulting the design documents or reports of the distribution line, or using modern power design software and automation tools, that is, identifying and distinguishing the positions and number of tie switches in the line, so as to analyze or count whether each line has connection, each connection first section, the number of tie switches, whether the same bus is connected, whether the same station has different bus connections, etc. For lines without connection, without tie switches in the middle and rear sections, with the same bus, and with different bus connections at the same station, it is determined that the connection is unreasonable.

[0124] S420: Counting the details of the lines with tie switches in the first section and the number of tie switches, means that by consulting the design documents or reports of the distribution lines, or using modern power design software and automation tools, the details of the lines with tie switches in the first section and the corresponding number of tie switches are counted in the system, wherein the tie switches in the first section refer to the tie switches without front-end automation equipment. For example, referring to Figure 2 , where the connecting switch A3 is the connecting switch of the first section.

[0125] For S430: it is unreasonable to mark the line with a single contact and a contact switch in the first section as the contact switch position. A single contact line refers to a line connecting two substations or different busbar sections of a substation. This line structure is relatively simple, but the reliability is low; a multi-contact line is a more complex wiring mode, which is connected to each other through multiple lines to form a more reliable power grid structure. Therefore, when analyzing the rationality of the position of the line contact switch, the focus should be on the single contact line. Generally, in a single contact line, when a line fails, if the fault point is not in the first section, by isolating the fault point, power can be supplied to the non-fault first section, and the outgoing line switch of this line is used for power supply; for a line with a single contact and a contact switch in the first section, when a line fails, neither the outgoing line switch of this line nor the contact switch can supply power to the non-fault section of the line. Therefore, the line with a single contact and a contact switch in the first section is unreasonable. Therefore, this method needs to list the line details and contact number of the first section with a contact switch, and it is unreasonable to mark the line with a single contact and a contact switch in the first section. This analysis method can provide a basis for rectification so that the grid can be more reasonably distributed and the lines can be more intelligent.

[0126] Further, in some embodiments of the present invention, S210: when the line type is an overhead line type, the distribution line is divided into sections according to the main line sectioning switch, and based on the outgoing line and section switch current of each section, the load size and proportion of each section of the line are calculated to obtain a first analysis result, including:

[0127] S211: Obtaining the outgoing line current and the switching current of each section;

[0128] S212: Calculate and display the actual load size and proportion of each section of the line based on the outgoing line current and the section switch current of each section;

[0129] S213: Count the number of main line section switches;

[0130] S214: Calculate the reasonable load proportion of each section according to the number of switches in the main line of the line;

[0131] S215: According to the actual load proportion of each section of the line and the reasonable load proportion of each section, the details of the lines with unreasonable load proportion and the load proportion of each section are counted.

[0132] Specifically, in this embodiment, S211: obtaining the outgoing line current and the current of each section segment switch refers to obtaining and displaying the outgoing line current and the current of each section segment switch on each line based on the current measuring device set on the outgoing line switch and the segment switch, combined with modern power design software and automation tools and remote data transmission and other technologies, for example, referring to Figure 2 , obtain the current flowing through the outgoing switch S1 to obtain IS1; obtain the current flowing through the segment switch A1 to obtain IA1; obtain the current flowing through the segment switch A2 to obtain IA2; obtain the current flowing through the switch A5 to obtain IA5.

[0133] S212: Calculate and display the actual load size and proportion of each line section according to the outgoing line current and the current of each section switch, which means that the load and proportion of each line section are calculated and displayed using the current IS1, IA1, IA2 and IA5 on each switch obtained in S211. Figure 2 , where the load of section S1-A1 is: IS1-IA1, correspondingly, the load proportion of section S1-A1 is: (IS1-IA1) / IS1; the load of section A1-A2 is: IA1-IA2, correspondingly, the load proportion of section A1-A2 is: (IA1-IA2) / IS1; similarly, the load of section A2-A5 is: IA2-IA5, correspondingly, the load proportion of section A2-A5 is: (IA2-IA5) / IS1.

[0134] S213: Counting the number of main line section switches refers to counting the number of main line section switches N by consulting the design documents or reports of the distribution line, or using modern power design software and automation tools. For example, refer to Figure 2 There are two segment switches, A1 and A2, so N=2.

[0135] S214: Calculate the reasonable load share of each section according to the number of section switches of the main line, which means that based on the number of section switches N counted in S223, calculate the reasonable load share interval of each section of the line: 1 / (N*X), where the range of X is [0.8,1.2]. For example, refer to Figure 2 , substitute N=2 into the formula 1 / (N*X), where the range of X is [0.8,1.2], and the reasonable load distribution ratio range of each section of the line is obtained as: [26.7%,40%].

[0136] S215: According to the actual load proportion of each section of the line and the reasonable load proportion of each section, the line details and the load proportion of each section with unreasonable load proportion are counted, which means comparing the actual load distribution proportion of each section calculated in S212 to see whether it is within the reasonable load distribution proportion range of each section calculated in S214. If there are sections in the line that are not within the reasonable load distribution proportion range, the line details and the load proportion of each section of the line are counted in the system. For example, refer to Figure 2 , respectively compare whether the actual load proportion of each section (IS1-IA1) / IS1, (IA1-IA2) / IS1 and (IA2-IA5) / IS1 are within the reasonable load distribution proportion range [26.7%, 40%] of each section. If the actual load proportion of any section is not within the reasonable load distribution proportion range, the line details of the line and the load proportion of each section will be counted in the system.

[0137] Further, in some embodiments of the present invention, S220: when the line type is a mixed overhead and cable line type, the sections are divided according to the main line section switch and the ring network cabinet, and based on the outgoing line, section switch and ring network cabinet current of each section, the load size and proportion of each section of the line are calculated to obtain a first analysis result, including:

[0138] S221: Obtain the outgoing line current, the current of each section switch and the current of each ring main unit;

[0139] S222: Calculate and display the actual load size and proportion of each section of the line based on the outgoing line current, the section switch current of each section, and the current of each ring network cabinet;

[0140] S223: Count the number of main line section switches and main line ring network cabinets;

[0141] S224: Calculate the reasonable load proportion of each section according to the number of main line section switches and the number of main line ring network cabinets;

[0142] S225: According to the actual load proportion of each section of the line and the reasonable load proportion of each section, the details of the lines with unreasonable load proportion and the load proportion of each section are counted.

[0143] Specifically, in this embodiment, S221: obtaining the outgoing line current, the current of each section segment switch and the current of each ring main unit means that based on the current measuring equipment arranged on the outgoing line switch and the segment switch, combined with modern power design software and automation tools and remote data transmission and other technologies, the outgoing line current on each line and the current of each section segment switch are obtained and displayed.

[0144] For example, refer to Figure 3 , when the line is an overhead and cable mixed type line with the first section being an overhead line, obtain the current flowing through the outgoing switch S1 to obtain IS1; obtain the current flowing through the section switch A1 to obtain IA1; obtain the outgoing current flowing through the ring network cabinet HW1_01 to obtain IHW1_01; obtain the outgoing current flowing through the ring network cabinet HW1_02 to obtain IHW1_02; obtain the outgoing current flowing through the ring network cabinet HW2_01 to obtain IHW2_01; obtain the outgoing current flowing through the ring network cabinet HW2_02 to obtain IHW2_02; obtain the current flowing through the switch A5 to obtain IA5. Reference Figure 4 When the line is an overhead and cable mixed type line whose first section is a cable line, obtain the current flowing through the outgoing switch S1 to obtain IS1; obtain the outgoing current flowing through the ring network cabinet HW1_02 to obtain IHW1_02; obtain the outgoing current flowing through the ring network cabinet HW2_01 to obtain IHW2_01; obtain the outgoing current flowing through the ring network cabinet HW2_02 to obtain IHW2_02; obtain the current flowing through the section switch A1 to obtain IA1; obtain the current flowing through the switch A5 to obtain IA5.

[0145] S222: Calculate and display the actual load size and proportion of each line section based on the outgoing line current, the current of each section switch and the current of each ring network cabinet. This means that the load and proportion of each corresponding line section are calculated and displayed using the currents IS1, IA1, IHW1_01, IHW1_02, IHW2_01, IHW2_02 and IA5 on each switch obtained in S231.

[0146] For example, refer to Figure 3, when the line is an overhead and cable mixed type line with the first section being an overhead line, the load of section S1-A1 is: IS1-IA1, correspondingly, the load proportion of section S1-A1 is: (IS1-IA1) / IS1; the load of section A1-HW1_01 is: IA1-IHW1_01, correspondingly, the load proportion of section A1-HW1_01 is: (A1-HW1_01) / IS1; similarly, the load of section HW1_01-H The load of W2_01 is: IHW1_01-IHW2_01, correspondingly, the load ratio of section HW1_01-HW2_01 is: (IHW1_01-IHW2_01) / IS1; similarly, the load of section HW2_01-HW2_02 is: IHW2_01-IHW2_02, correspondingly, the load ratio of section HW2_01-HW2_02 is: (IHW2_01-IHW2_02) / IS1.

[0147] For example, refer to Figure 4 When the line is an overhead and cable mixed type line whose first section is a cable line, the load of section HW1_01-HW2_01 is: IS1-IHW2_01, and correspondingly, the load proportion of section HW1_01-HW2_01 is: (IS1-IHW2_01) / IS1; similarly, the load of section HW2_01-A1 is: IHW2_01-IA1, and correspondingly, the load proportion of section HW2_01-A1 is: (IHW2_01-IA1) / IS1; similarly, the load of section A1-A5 is: IA1-IA5, and correspondingly, the load proportion of section A1-A5 is: (IA1-IA5) / IS1.

[0148] S223: Counting the number of main line section switches and main line ring main unit refers to counting the number of main line section switches N and the number of main line ring main unit M by consulting the design documents or reports of the distribution line, or using modern power design software and automation tools. For example, refer to Figure 3 , when the line is an overhead and cable mixed type line with the first section being an overhead line, the section switch is A1, and there are two main line ring network cabinets, namely HW1 and HW2, so N = 1, M = 2. Similarly, refer to Figure 4 When the line is a mixed type of overhead and cable line with the first section being a cable line, the section switch is A1, and there are two main line ring network cabinets, namely HW1 and HW2, so N=1, M=2.

[0149] S224: Calculate the reasonable load share of each section according to the number of main line section switches and the number of main line ring network cabinets. This means that based on the number of section switches N counted in S223, calculate the reasonable load share interval of each section of the line: 1 / [(N+M+1)*X] or 1 / [(N+M)*X], where the range of X is [0.8,1.2].

[0150] For example, refer to Figure 3 When the line is an overhead and cable mixed type line with the first section being an overhead line, substitute N=1, M=2 into the formula 1 / [(N+M+1)*X], where the range of X is [0.8,1.2], and the reasonable load distribution ratio interval of each section of the line is: [20%, 30%].

[0151] For example, refer to Figure 4 When the line is a mixed type of overhead and cable line with a cable line as the first section, substitute N=1 and M=2 into the formula 1 / [(N+M)*X], where the range of X is [0.8,1.2], and the reasonable load distribution ratio range of each section of the line is: [26.7%,40%].

[0152] S225: According to the actual load proportion of each section of the line and the reasonable load proportion of each section, the line details and the load proportion of each section with unreasonable load proportion are counted. This means comparing the actual load distribution proportion of each section calculated in S232 to see whether it is within the reasonable load distribution proportion range of each section calculated in S234. If there are sections in the line that are not within the reasonable load distribution proportion range, the line details and the load proportion of each section of the line will be counted in the system.

[0153] For example, refer to Figure 3 When the line is a mixed type of overhead and cable line with the first section being an overhead line, the actual load proportion of each section is compared to see whether it is within the reasonable load distribution proportion range of each section [20%, 30%]. If the actual load proportion of any section is not within the reasonable load distribution proportion range, the line details of the line and the load proportion of each section are counted in the system.

[0154] For example, refer to Figure 4 When the line is a mixed type of overhead and cable line with the first section being a cable line, the actual load proportion of each section is compared to see whether it is within the reasonable load distribution proportion range of each section [26.7%, 40%]. If the actual load proportion of any section is not within the reasonable load distribution proportion range, the line details of the line and the load proportion of each section are counted in the system.

[0155] The present invention also provides a distribution network architecture analysis system, comprising:

[0156] A grid analysis overview module, used to implement step S100: identifying the line type of the distribution network grid structure;

[0157] The grid analysis details module is used to implement step S200: analyzing the rationality of the load distribution of the distribution network grid structure according to the line type to obtain a first analysis result; and implement step S300: analyzing the rationality of the distribution of the line distribution transformers of the distribution network grid structure to obtain a second analysis result;

[0158] The line and wire diagram module is used to implement step S400: analyzing the rationality of the tie switch position of the distribution network grid structure to obtain a third analysis result;

[0159] The evaluation summary and verification information module is used to implement step S500: output and display the first analysis result, the second analysis result and the third analysis result.

[0160] Specifically, in this embodiment, by listing and displaying fields such as collected and calculated data in the form of integrated modules or web pages, the architecture and rationality of each line in the distribution network are made clearer, thereby facilitating the architecture analysis of the distribution network.

[0161] The present invention also proposes a computer device, comprising: one or more processors; a memory; and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and when the programs are executed by the processors, the steps of the distribution network architecture analysis method as described above are implemented.

[0162] The present invention also proposes a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the distribution network architecture analysis method as described above are implemented.

[0163] It will be appreciated by those skilled in the art that all or part of the steps for implementing the above-mentioned embodiments can be accomplished by hardware, or by a program to instruct the relevant hardware to accomplish, and the program can be stored in a computer-readable storage medium. In the context of the present invention, the computer-readable medium can be considered to be tangible and non-temporary. Non-limiting examples of non-temporary tangible computer-readable media include non-volatile memory circuits (e.g., flash memory circuits, erasable programmable read-only memory circuits, or mask read-only memory circuits), volatile memory circuits (e.g., static random access memory circuits or dynamic random access memory circuits), magnetic storage media (e.g., analog or digital tapes or hard disk drives), and optical storage media (e.g., CDs, DVDs, or Blu-ray discs), etc. The program code for implementing the method of the present invention can be written in any combination of one or more programming languages. These program codes can be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that the program code, when executed by the processor or controller, enables the functions / operations specified in the flow chart and / or block diagram to be implemented. The program code may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.

[0164] In addition, although each operation is described in a specific order, this should be understood as requiring such operation to be performed in the specific order shown or in a sequential order, or requiring that all illustrated operations should be performed to obtain desired results. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope of the present invention. Some features described in the context of a separate embodiment can also be implemented in a single implementation in combination. On the contrary, the various features described in the context of a single implementation can also be implemented in multiple implementations individually or in any suitable sub-combination mode.

[0165] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A distribution network architecture analysis method, characterized in that: The following steps are involved: Identify the line type of the distribution network grid structure; Analyze the rationality of the load distribution of the distribution network grid structure according to the line type to obtain a first analysis result; Analyze the rationality of the distribution of the line distribution transformers in the distribution network grid structure to obtain a second analysis result; Analyzing the rationality of the tie switch position of the distribution network grid structure to obtain a third analysis result; The first analysis result, the second analysis result and the third analysis result are output and displayed.

2. The distribution network architecture analysis method according to claim 1, characterized in that: The method of analyzing the rationality of the load distribution of the distribution network grid structure according to the line type to obtain a first analysis result includes: When the line type is an overhead line type, the distribution line is divided into sections according to the main line section switch, and based on the outgoing line switch current and the section switch current of each section, the load size and proportion of each section of the line are calculated to obtain the first analysis result; When the line type is a mixed overhead and cable line type, the sections are divided according to the main line section switches and ring network cabinets, and based on the outgoing switch current, section switch current and ring network cabinet current of each section, the load size and proportion of each section of the line are calculated to obtain the first analysis result.

3. The distribution network architecture analysis method according to claim 1, characterized in that: The analysis of the rationality of the distribution of the line distribution transformers in the distribution network grid structure to obtain a second analysis result includes: Counting the total number of distribution transformers connected to the distribution line to obtain the first number of distribution transformers; Count the total number of distribution transformers connected between any two adjacent section switches or ring network cabinets of all distribution trunk lines to obtain the number of second distribution transformers; Count the number of distribution transformers connected to all branch line switches to obtain the number of third distribution transformers; Calculate the actual proportion of the number of distribution transformers in each section according to the number of the first distribution transformers, the number of the second distribution transformers and the number of the third distribution transformers; Count the number of main line section switches and / or main line ring main cabinets; According to the number of main line segment switches and the number of main line ring network cabinets, calculate the reasonable proportion of distribution transformers in each section; According to the actual proportion of the number of distribution transformers in each section and the reasonable proportion of the number of distribution transformers in each section, the line details with unreasonable proportion of the number of distribution transformers in each section and the proportion of the number of distribution transformers in each section are counted to obtain the second analysis result.

4. The distribution network architecture analysis method according to claim 3, characterized in that: The analyzing the rationality of the distribution of the line distribution transformers in the distribution network grid structure to obtain a second analysis result also includes: Counting the total capacity of the distribution transformers connected in the distribution line to obtain the first distribution transformer capacity; Count the total capacity of the distribution transformers connected between any two adjacent section switches or ring network cabinets of all distribution trunk lines to obtain the second distribution transformer capacity; Count the capacity of distribution transformers connected to all branch line switches to obtain the third distribution transformer capacity; Calculate the actual distribution transformer capacity ratio of each section and each branch line according to the first distribution transformer capacity, the second distribution transformer capacity and the third distribution transformer capacity; Count the number of main line section switches and main line ring network cabinets; According to the number of main line segment switches and the number of main line ring network cabinets, calculate the reasonable proportion of distribution transformer capacity in each section; According to the actual distribution transformer capacity ratio of each section and the reasonable distribution transformer capacity ratio of each section, the line details with unreasonable distribution transformer capacity ratio of each section and the distribution transformer capacity ratio of each section are counted to obtain the second analysis result.

5. The distribution network architecture analysis method according to claim 1, characterized in that: The analysis of the rationality of the tie switch position of the distribution network grid structure to obtain a third analysis result includes: Count, identify and distinguish the number and location of contact switches; Count the line details and the number of tie switches in the first section; The line with a single tie and a tie switch in the first section is marked as having an unreasonable tie switch position, and the third analysis result is obtained.

6. The distribution network architecture analysis method according to claim 2, characterized in that: When the line type is an overhead line type, the distribution line is divided into sections according to the main line section switch, and the load size and proportion of each section of the line are calculated based on the outgoing line and section switch current of each section, and the first analysis result is obtained, including: Obtain outgoing line current and section switch current of each section; According to the outgoing line current and the switching current of each section, the actual load size and proportion of each section of the line are calculated and displayed; Count the number of main line section switches; According to the number of switches in the main line of the line, calculate the reasonable load proportion of each section; According to the actual load proportion of each section of the line and the reasonable load proportion of each section, the details of the line with unreasonable load proportion and the load proportion of each section are counted to obtain the first analysis result.

7. The distribution network architecture analysis method according to claim 2, characterized in that: When the line type is a mixed overhead and cable line type, the sections are divided according to the main line section switch and the ring network cabinet, and based on the outgoing line, section switch and ring network cabinet current of each section, the load size and proportion of each section of the line are calculated to obtain the first analysis result, including: Obtain outgoing line current, section switch current of each section and current of each ring main unit; According to the outgoing line current, the sectionalized switch current of each section and the current of each ring main unit, the actual load size and proportion of each section of the line are calculated and displayed; Count the number of main line section switches and main line ring main cabinets; According to the number of main line section switches and the number of main line ring network cabinets, calculate the reasonable load proportion of each section; According to the actual load proportion of each section of the line and the reasonable load proportion of each section, the details of the line with unreasonable load proportion and the load proportion of each section are counted.

8. A distribution network architecture analysis system, characterized in that: include: Grid analysis profile module, used to identify the line type of the distribution network grid structure; A grid analysis details module, used to analyze the rationality of the load distribution of the distribution network grid structure according to the line type, and obtain a first analysis result; Analyze the rationality of the distribution of the line distribution transformers in the distribution network grid structure to obtain a second analysis result; A line and wire diagram module is used to analyze the rationality of the tie switch position of the distribution network grid structure to obtain a third analysis result; The evaluation summary and verification information module is used to output and display the first analysis result, the second analysis result and the third analysis result.

9. A computer device, characterized in that: include: one or more processors; Memory; One or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and when the programs are executed by the processors, the steps of the distribution network architecture analysis method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the distribution network architecture analysis method according to any one of claims 1 to 7 are implemented.

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