Topology correction method for transmission, transformation and distribution equipment with consistency of topology and ledger and computer equipment

Abstract

The invention relates to the technical field of power grid data processing and analysis, in particular to a topology correction method for transmission, transformation and distribution equipment with topology and ledger consistency and computer equipment. According to the method, firstly, attributes and topological information of transmission, transformation and distribution equipment are extracted from a PMS system, and a logic connection graph is constructed; on the basis of the logic connection graph, topological connectivity and ledger consistency proofreading in the specialty, between transmission and transformation specialties and between transformation and distribution specialties are executed in sequence, and all non-connected equipment and ledger inconsistent items are marked; wherein the inter-specialty proofreading adopts a sequence traversal algorithm to respectively verify communication paths and ledger information from a power transmission line to a transformer substation bus and from a distribution network line to a transformer substation outgoing circuit breaker; and generating a governance work order based on a marking result, and directionally pushing the governance work order to an operation and maintenance party to complete a data correction closed loop. Based on the method, the problem that the machine account information is not matched with the topological information can be effectively solved, so that the operation and maintenance precision of the power grid is improved.

Description

Technical Field

[0001] This invention relates to the field of power grid data processing and analysis technology, specifically to a method and computer equipment for topology correction of transmission, transformation and distribution equipment to ensure consistency between topology and records. Background Technology

[0002] In the operation and management of power systems, transmission, substation, and distribution are core components of the power grid. The ledger information and topological relationships of their primary equipment are the fundamental data supporting key tasks such as power grid asset management, power supply range analysis, and fault location. As the scale of the power grid continues to expand and the number of equipment continues to increase, the complexity of power grid data management has significantly increased. As the core storage carrier of the ledger of transmission, substation, and distribution equipment, the Production Management System (PMS) must simultaneously meet the equipment asset management needs of the three disciplines. Its data quality directly affects the accuracy of power grid operation and maintenance decisions and the stability of power grid operation. Building a unified and accurate power grid topology and ledger system has become an important goal of the power industry's digital transformation.

[0003] Currently, the management of transmission, substation, and distribution in the power system is relatively independent. When modeling in the PMS system, each specialty prioritizes meeting its own management needs, and the modeling standards and order are not unified and coordinated. For example, transmission modeling focuses on line assets and cross-regional connections, substation modeling focuses on the correlation logic of equipment such as busbars and transformers within the substation, and distribution modeling focuses more on the correspondence between lines and user-side power supply nodes. At the same time, the maintenance of equipment ledgers and topologies for each specialty relies on different maintenance personnel, whose technical levels and data update timeliness vary. This results in the transmission, substation, and distribution equipment data stored in the PMS system under the current technology exhibiting the characteristics of "local standardization within the specialty and loose connection between specialties," and a unified topology and ledger association system for the entire network has not yet been formed.

[0004] However, the existing independent modeling and maintenance model directly leads to inconsistencies between transmission, transformation, and distribution equipment ledgers and topologies. On the one hand, some equipment has topology data errors, such as missing connection relationships between transmission lines and substation buses, and broken topology links between distribution network lines and circuit breakers within stations, resulting in a fragmented power grid topology. On the other hand, equipment ledger information does not match the actual topology; for example, the substation information recorded in the transmission line ledger is inconsistent with the actual connected substations, and the starting circuit breaker marked in the distribution network ledger does not match the actual connected circuit breaker in the topology. These problems not only affect the efficiency of data sharing between different disciplines but also lead to deviations in results for advanced applications that rely on the entire network topology, such as power supply range analysis and load forecasting. This makes it difficult to meet the needs of refined operation and maintenance and safe and stable operation of the power grid. Therefore, a technical solution that can correct the consistency between the transmission, transformation, and distribution equipment topology and ledgers is urgently needed to address the pain points of existing technologies. Summary of the Invention

[0005] To address the technical problem of reduced power grid operation and maintenance accuracy caused by mismatch between ledger information and topology information, this invention provides a method for topology correction of transmission, transformation, and distribution equipment to ensure consistency between topology and ledger information. Furthermore, this invention also provides a computer device for performing this correction method.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A method for topology correction of transmission and distribution equipment to ensure consistency between topology and records includes the following steps: S1. Extract the ledger information and topology connection information of all equipment in the transmission, transformation and distribution network from the production management system, and construct a logical connection graph of power grid equipment with equipment as nodes and the connection relationship between equipment as edges based on the topology connection information; S2. Based on the logical connectivity diagram of power grid equipment, a graph theory traversal algorithm is used to check the internal topology connectivity of the main equipment of each discipline of transmission, transformation and distribution, and to mark the disconnected equipment. S3. Taking the transmission line as the object, based on the logical connection diagram of the power grid equipment, the topological connectivity of the line to the busbars of the substations on both sides is checked using the hierarchical traversal algorithm. The actual connected substations are verified to be consistent with the information in the ledger, and the non-connected or inconsistent transmission lines are marked. S4. Taking the distribution network lines as the object, based on the logical connection diagram of the power grid equipment, use the hierarchical traversal algorithm to check the topological connectivity of the distribution network lines to the substation bus and circuit breakers, verify whether the actual connected circuit breakers are consistent with the information in the ledger, and mark the distribution network lines that are not connected or inconsistent. S5. Summarize all tagging information, generate governance work orders by device, and send them to the responsible maintenance entity to drive data verification and correction.

[0007] As a further improvement to the above scheme, the criterion for internal topology connectivity verification is: if a complete link can be formed by traversing all devices under the master device through graph theory traversal algorithm, it is determined to be connected; otherwise, it is determined to be disconnected.

[0008] As a further improvement to the above scheme: In S3, the hierarchical traversal algorithm starts from any end device of the transmission line and traces back along the connection relationship towards the substation bus.

[0009] As a further improvement to the above scheme: In S4, the hierarchical traversal algorithm starts from the starting end device of the distribution network line and traces back to the substation along the connection relationship to verify the topological connectivity to the substation bus and circuit breaker respectively.

[0010] As a further improvement to the above scheme: the main equipment includes transmission lines, substation busbars, transformers and distribution network lines.

[0011] As a further improvement to the above scheme: the subordinate equipment of transmission lines and distribution lines includes conductors, cables and external connection lines, and the subordinate equipment of distribution lines also includes pole-mounted switches; the subordinate equipment of substation busbars and transformers includes internal connection lines, circuit breakers and disconnectors.

[0012] As a further improvement to the above scheme: the ledger information includes the equipment name, equipment ID, and the plant or distribution network line to which the equipment belongs; the topology connection information is the connection terminal information of the equipment.

[0013] As a further improvement to the above solution: In S5, the governance work order includes the equipment's ledger information, the problem type, the affiliated maintenance unit, and the corresponding maintenance personnel information; among which, the problem types include disconnection and inconsistency.

[0014] As a further improvement to the above solution: In S5, the driving data verification and correction form a closed-loop process, which includes: work order reception, data verification, error correction, result feedback, until the problem of work order association is resolved.

[0015] The present invention also provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and running on the processor. When the computer program is executed by the processor, it implements the steps of the above-described method for topology correction of transmission and distribution equipment to ensure consistency between topology and ledger, so as to correct the consistency between the topology and ledger of distribution network equipment.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention addresses the root cause of the maintenance accuracy problem caused by the mismatch between ledgers and topology by constructing a complete technical system of "unified data extraction → hierarchical precise verification → closed-loop problem rectification". Its core advantage focuses on "improving maintenance accuracy": The data extraction stage adopts a "full correlation" design, extracting all equipment ledgers and topology connection information from the production management system, constructing a logical connectivity graph of power grid equipment with "equipment as nodes and connection relationships as edges". This avoids matching deviations caused by traditional data dispersion, providing a complete and correlated foundation of data for maintenance accuracy calibration. The verification stage relies on a "hierarchical progressive verification" logic, first using graph theory traversal. The algorithm verifies the internal topological connectivity of main equipment in each specialty, and then uses a hierarchical traversal algorithm to verify cross-professional connections and check the consistency of the ledger. This transforms the vague "low precision" problem into a precise diagnostic result for specific equipment anomalies, solving the pain point of traditional general verification being difficult to locate. In the rectification process, a "targeted closed-loop" mechanism is used to generate governance work orders for each equipment and send them to the responsible operation and maintenance entity in a targeted manner. This drives data verification and correction, avoiding the drawbacks of traditional problem feedback without direction and rectification without tracking. This ensures that the ledger and topology matching problem is completely resolved, and guarantees that power grid operation and maintenance are carried out based on accurate data, improving the accuracy and reliability of power supply range analysis, fault location and other work.

[0017] 2. This invention addresses the accuracy deviation problem caused by vague verification standards in traditional operation and maintenance by clearly defining the judgment criteria for internal topology connectivity verification: Regarding standard uniformity, the judgment of "internal topology connectivity" is quantified as "graph theory traversal covering all devices under the main device and forming a complete link," using the algorithm result as the sole basis to eliminate differences in subjective human experience and avoid contradictory conclusions for the same device due to different judgment standards, providing a unified basis for verifying the consistency of records and topology; Regarding verification accuracy, this standard requires coverage of all devices under the main device, using graph theory traversal to check each node. It accurately captures local disconnections that are easily missed by traditional manual verification, ensuring that the topology verification results match the actual state of the equipment. This provides an unbiased topology benchmark for ledger matching verification, avoiding invalid maintenance and rectification caused by topology benchmark deviations. In terms of maintenance traceability, the judgment criteria are deeply bound to the graph theory traversal algorithm. During algorithm execution, information such as traversed nodes, paths, and uncovered device IDs are recorded. The breakpoint location can be traced back through the logs, solving the problem of traditional verification results lacking basis and rectification lacking direction. This helps maintenance personnel quickly locate the root cause of the mismatch between the ledger and the topology, improving the accuracy and efficiency of rectification and ensuring the implementation of maintenance precision.

[0018] 3. The hierarchical traversal algorithm in the cross-professional verification of power transmission and substation in this invention traces the execution path from the end equipment of the transmission line to the substation bus, accurately solving the pain points of ambiguous traversal direction and inefficient breakpoint location in traditional cross-professional topology verification. It provides key technical support for improving the operation and maintenance accuracy of transmission line ledger and topology matching. Its advantages are mainly reflected in three aspects: improved verification efficiency, enhanced breakpoint location accuracy, and guaranteed ledger verification reliability. Traditional operation and maintenance (O&M) verification of the topological connectivity between transmission lines and substation busbars often suffers from a lack of clear traversal direction (e.g., randomly starting from the intermediate node of the line), leading to repetitive traversal paths and excessive checking of invalid nodes. This not only results in long processing times but also easily overlooks critical breakpoints connecting the line ends to the busbars. Consequently, discrepancies between the substation information recorded in the transmission line ledger and the actual connected substations are difficult to detect in a timely manner, affecting the accuracy of O&M work such as power supply range analysis. The invented "end device → substation busbar" traversal path perfectly matches the physical structure of transmission lines "connecting to different substation busbars at both ends" and the power grid supply logic. The traversal starting point directly locks the end of the line, quickly focusing on the core link of cross-disciplinary connections, significantly reducing invalid traversal of non-critical nodes in the middle of the line, and significantly improving verification efficiency. At the same time, this directional traversal path can accurately focus on the cross-disciplinary connection of "line end - busbar". The algorithm addresses the weak links in the topology. If a topological breakpoint exists, it can directly locate the breakpoint (e.g., "the conductor at the end of transmission line #010 is not connected to the 220kV IIA busbar"), avoiding the "inaccurate or incomplete" breakpoint problems caused by traditional fuzzy traversal. More importantly, accurate topological breakpoint location and efficient connectivity verification provide a reliable basis for subsequent consistency checks between transmission line ledgers and topology. For example, if traversal confirms that a line only connects to one substation busbar, but the ledger records two substations, the ledger information can be directly determined to be incorrect. This avoids "misjudging the ledger and topology match" or "missing misjudgments" due to inaccurate topology verification, ensuring that maintenance personnel can correct the ledger based on clear verification results. This eliminates the impact of ledger and topology mismatches on maintenance accuracy from a cross-professional perspective, ensuring that maintenance decisions in the power grid transmission-substation link (such as line load allocation and fault isolation) are based on accurate data.

[0019] 4. This invention, by clearly defining the execution logic of the hierarchical traversal algorithm in cross-professional verification of distribution network lines and substations—"tracing back from the starting equipment of the distribution network line towards the substation, verifying the busbar and circuit breaker respectively"—precisely overcomes the pain points of traditional distribution network-substation topology verification, which suffers from "single target and incomplete link coverage." This provides key technical support for improving the operational accuracy of distribution network line ledgers and topology matching. Its advantages are concentrated in three aspects: "comprehensive verification target," "accurate link location," and "targeted ledger verification." Traditional operation and maintenance often focuses only on the single target of "whether the line is connected to the busbar," neglecting the connection verification between the line and the substation's outgoing circuit breaker. However, the power supply control of the distribution network line depends on the circuit breaker, and the power source depends on the busbar. Any abnormal connection between the two can lead to problems such as "the starting circuit breaker information recorded in the distribution network ledger does not match the actual information" and "the power supply link of the line appears to be connected but is actually disconnected," thus causing operational accuracy problems such as user power supply fault location deviation and load statistics distortion. This invention, however, clearly defines a "dual-target verification" design... The design perfectly matches the actual power supply logic of the distribution network line, which "takes power from the substation circuit breaker and obtains power through the busbar." The traversal path starts from the beginning of the distribution network line (i.e., the core node connecting to the substation) and simultaneously covers the two key links: "line-circuit breaker" and "line-busbar." This avoids errors such as "circuit breaker open but line is mistakenly considered to be supplying power normally" due to missed circuit breaker connection checks, and also prevents deviations such as "busbar de-energized but line is mistakenly considered to be supplying power normally" due to missed busbar connection checks, achieving comprehensive verification of the distribution network-substation cross-professional link. Simultaneously, it "to the substation..." The "directional tracing" path design directly focuses on the core area connecting distribution network lines and substations, quickly locating two types of critical breakpoints: if tracing leads to a circuit breaker interruption, it accurately pinpoints the problem of "mismatch between the starting end of the distribution network line and the circuit breaker terminals"; if tracing leads to a bus interruption, it clarifies the root cause of "abnormal connection between the line and the bus after passing the circuit breaker," avoiding the problems of "ambiguous breakpoint location and expanded investigation scope" caused by traditional undirected traversal. More importantly, this traversal logic provides accurate evidence for the consistency verification of distribution network line ledgers and topology: if traversal... If the circuit breaker actually connected to the line does not match the "starting circuit breaker" recorded in the ledger, or if the line only connects the circuit breaker but not the busbar (i.e. the power supply link is not fully formed), it can be directly determined that the ledger is incorrect or the topology is abnormal. This avoids "misjudging the matching of the distribution network line ledger and topology" due to incomplete verification, and ensures that maintenance personnel can make targeted corrections to the ledger or repair the topology. It completely eliminates the impact of the mismatch between the ledger and the topology on the accuracy of operation and maintenance from the distribution network-substation connection level, and ensures that operation and maintenance work such as power supply range analysis and user power outage impact assessment in the distribution network link is carried out based on accurate data. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the method flow of the present invention.

[0021] Figure 2 This is a schematic diagram of the intra-professional topology connectivity verification in this invention.

[0022] Figure 3 This is a schematic diagram illustrating the topological connectivity verification when connecting power transmission and substation systems in this invention.

[0023] Figure 4 This is a schematic diagram illustrating the topological connectivity verification when there is no connection between the power transmission and substation systems in this invention.

[0024] Figure 5 This is a schematic diagram illustrating the topological connectivity verification between substation and distribution systems in this invention.

[0025] Figure 6 This is a schematic diagram of the equipment management work order generation and closed-loop management in this invention. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0027] This invention provides a method for topology correction of transmission and distribution equipment to ensure consistency between topology and records. The overall process is as follows: Figure 1 As shown, the specific content is as follows.

[0028] I. Constructing the logical connection diagram of power grid equipment Obtain ledger information and equipment topology connection information for all equipment in the transmission, transformation, and distribution networks from the Production Management System (PMS). The corresponding main equipment includes transmission lines, substation busbars, transformers, and distribution network lines. Equipment corresponding to transmission lines includes conductors, cables, and external connection lines, encompassing all equipment belonging to that transmission line. Equipment corresponding to substation busbars and transformers includes internal connection lines, circuit breakers, and disconnectors, encompassing all equipment belonging to that substation. Equipment corresponding to distribution network lines includes conductors, cables, external connection lines, and pole-mounted switches, encompassing all equipment belonging to that distribution network.

[0029] The ledger information mainly includes equipment name, equipment ID, and the substation or distribution network line to which the equipment belongs. For example, the ledger information for the extracted transmission line "220kV Gaoyu 4757 line" is shown in Table 1 (NULL indicates a null value), and the ledger information for the distribution network line is as follows: Figure 2 As shown in Table 1, the theoretical starting station (500kV Gaocheng Substation) and ending station (220kV Jinjialing Substation) are clearly recorded.

[0030] Table 1. Ledger Information for Transmission Lines Line ID Line Name Start Factory ID Start of plant name End of Plant ID End of plant name length 73611597-BEEA-4ADD-A582-37AF2E26B3D3-50837 220kV Gaoyu 4757 line 28B3B919-62A1-434E-9A58-D475FB2A1B67-22929 500kV Kongdian Substation 9C54B329-9584-4B08-BA05-6AC643A263E7-00002 220kV Jinjialing Substation 26.078km 2BDDD5F9-C570-4E20-8CF2-3D2A4CF1C884-00052 220kV Gaoyu 4757 line 4C1C9DDF-AAF1-4F20-9BEB-2616988D030F-00038 500kV Gaocheng Substation NULL NULL 12.8988km Table 2. Ledger Information of Distribution Network Lines Distribution line ID Line Name Switch ID Switch Name length 8D83ED7A-6630-48C6-97A9-B68F837511EF-02256 110kV Huaining Road Substation Tahiti Phase VI Line 29 8FBC224F-F09C-4881-B45E-0FD3F0C50E72-11577 Tahiti Phase VI, Unit 29 10.7347 SBID00000018742A6D2B9E45C587DC3870041A7D9C 110kV Huaining Road Substation Xuefu Line 04 8FBC224F-F09C-4881-B45E-0FD3F0C50E72-11375 School of Education 04 2.2703 SBID000000755DF3071E944EC391F9A36BD7477C26 110kV Huaining Road Substation Jindi Second Substation Line 24 8FBC224F-F09C-4881-B45E-0FD3F0C50E72-11539 Gemdale Second Institute 24 0.8931 Topology connection information: This refers to the connection terminal information of the equipment. The combination of conductor ledger information and topology connection information is shown in Table 3, and the combination of substation busbar ledger information and topology connection information is shown in Table 4. Table 3 shows that the ledger for conductors belonging to the "220kV Gaoyu 4757 line" records the connection terminal numbers at both ends of each conductor segment, such as the connection terminals "1947816" and "124390981" for conductors "#001-#002," which constitute the connection relationship between the equipment.

[0031] Table 3. Conductor ledger information and topology connection information wire ID name Terminal information Line ID 12FA964D-6C01-47C0-B5AF-B823BBC7CB99-00070 #001-#002 1947816,124390981 2BDDD5F9-C570-4E20-8CF2-3D2A4CF1C884-00052 a15b0b10-4788-44ee-9beb-dd47b1039e37 #002-#003 124390981,123306209 2BDDD5F9-C570-4E20-8CF2-3D2A4CF1C884-00052 290a4054-a821-415d-a9cf-4cca48e416bb #003-#004 123306209,123306210 2BDDD5F9-C570-4E20-8CF2-3D2A4CF1C884-00052 93941ebb-d087-4f68-812a-50e80ed10e66 #004-#005 123306210,1021731 2BDDD5F9-C570-4E20-8CF2-3D2A4CF1C884-00052 1a1dc3ef-c99a-00be-e053-0a8a0aa900beobums7 #005-#006 1021731,124390982 2BDDD5F9-C570-4E20-8CF2-3D2A4CF1C884-00052 580b2c85-d81e-420c-8e59-5d042a7bcc8b #006-#007 124390982,ngpg9322626 2BDDD5F9-C570-4E20-8CF2-3D2A4CF1C884-00052 8a4c0161-f72d-40a4-860b-8bd81273df10 #007-#008 ngpg9322626,11567285 2BDDD5F9-C570-4E20-8CF2-3D2A4CF1C884-00052 1a1dc3ef-9c51-00be-e053-0a8a0aa900berrzg2x #008-#009 11567285,124390983 2BDDD5F9-C570-4E20-8CF2-3D2A4CF1C884-00052 92ebc7a9-14b9-449b-adc2-fcff22cf662b #009-#010 124390983,300553 2BDDD5F9-C570-4E20-8CF2-3D2A4CF1C884-00052 Table 4. Substation busbar ledger information and topology connection information Bus ID name Terminal information Factory / Station ID 06478FAD-A598-4FA7-BEAE-F85E8F64CAE3-00059 220kV IA busbar 126104317 4C1C9DDF-AAF1-4F20-9BEB-2616988D030F-00038 06478FAD-A598-4FA7-BEAE-F85E8F64CAE3-00057 220kV IIA busbar 126104316 4C1C9DDF-AAF1-4F20-9BEB-2616988D030F-00038 06478FAD-A598-4FA7-BEAE-F85E8F64CAE3-00058 220kV IB busbar 126104320 4C1C9DDF-AAF1-4F20-9BEB-2616988D030F-00038 06478FAD-A598-4FA7-BEAE-F85E8F64CAE3-00056 220kV IIB busbar 126104318 4C1C9DDF-AAF1-4F20-9BEB-2616988D030F-00038 Based on the extracted ledger information and topology connection information, and combined with graph theory traversal algorithms, a logical connectivity graph of power grid equipment is constructed in the system memory, with devices as nodes and the connection relationships between devices as edges. This graph is the basis for all subsequent topology analyses.

[0032] II. Verification of consistency between equipment topology and ledgers within the professional field Using the main equipment ledgers maintained by each power transmission, transformation, and distribution discipline as the verification object, the topological connectivity of all equipment within that main equipment is verified to ensure that all equipment within that main equipment is fully connected, and any disconnected equipment is marked. This step aims to check whether the subordinate equipment of the main equipment (transmission lines, substation busbars, transformers, distribution network lines) within each discipline is connected into a complete, uninterrupted link.

[0033] Taking the 220kV Gaoyu 4757 line in Table 1 as an example, its subordinate equipment includes multiple sections of conductors, cables, etc. Based on the logical connection diagram of the power grid equipment constructed above, a level-order traversal algorithm (such as depth-first search, DFS) is used to attempt to traverse all subordinate equipment starting from any equipment on the line.

[0034] like Figure 2As shown, the wire connections of this line are visualized. The hierarchical traversal algorithm checks whether the wires are connected end-to-end through a shared terminal number. For example, if the end terminal (124390981) of wire #001-#002 matches the start terminal (124390981) of wire #002-#003, then they are connected. If all subordinate devices in the line's ledger information can be traversed, it is determined to be connected; if a terminal cannot be connected at any point, it is determined to be disconnected, and the disconnected device is marked.

[0035] III. Verification of consistency between equipment topology and ledgers between power transmission and substation disciplines Using transmission lines as the verification object, based on the logical connectivity diagram of power grid equipment, the topological connectivity from the transmission lines to the busbars of the substations on both sides is verified through a hierarchical traversal algorithm. Equipment that is not connected is marked. At the same time, the information of the substations on both sides that are connected is recorded and verified with the information of the substations on both sides in the transmission line ledger information. Inconsistent transmission line ledgers are marked.

[0036] This step is used to verify whether the transmission lines and substations are seamlessly connected in terms of topology and records.

[0037] Taking the 220kV Gaoyu 4757 line as an example, a hierarchical traversal algorithm was used for verification based on the logical connectivity diagram. For example... Figure 3 and Figure 4 As shown, starting from the end equipment (such as conductors) of the line, the connection terminals are traced layer by layer towards the substation.

[0038] Topological connectivity verification: such as Figure 3 As shown, tracing back revealed that one side of the line was successfully connected to the "220kV IIA busbar" of the "500kV Gaocheng Substation". However, as... Figure 4 As shown, if the other side of the line fails to connect to any substation bus, the system will mark the line as "topology disconnected".

[0039] Consistency verification of the ledger: At the same time, the system records the information of the two substations actually connected on the topology (one side is 500kV Gaocheng Substation, the other side is not connected) and compares it with the ledger information of the line (starting substation: 500kV Gaocheng Substation, ending substation: 220kV Jinjialing Substation). If the topology result does not match the ledger record, the system will mark the line as "inconsistent with ledger".

[0040] IV. Verification of consistency between equipment and records between substation and distribution specialties Using distribution network lines as the verification object, based on the logical connectivity diagram of power grid equipment, the topological connectivity of distribution network lines to substation busbars and substation outgoing circuit breakers is verified through a hierarchical traversal algorithm. Non-connected equipment is marked, and the information of the connection to the substation outgoing circuit breaker is recorded and verified against the starting circuit breaker information in the distribution network line ledger attributes. Inconsistent distribution network line ledgers are marked.

[0041] This step is used to verify whether the distribution network lines and substations are accurately connected in terms of topology and records.

[0042] The operation is performed using the 110kV Huaining Road Substation Daxidi Phase VI Line 29 distribution network line in Table 2 as the object. Also based on the power grid equipment logic connection diagram, a hierarchical traversal algorithm is used, but this time it starts from the initial equipment of the distribution network line and traces towards the substation.

[0043] like Figure 5 As shown, the hierarchical traversal shows that the distribution network line successfully connected the "110kV Huaining Road Substation Daxidi Phase VI Switch 29" (i.e., outgoing circuit breaker) and the "10kV II Section Busbar", indicating that the topological connectivity is normal.

[0044] The system then checks whether the circuit breaker information of the topology connection (switch ID: 8FBC224F-F09C-4881-B45E-0FD3F0C50E72-11577) matches the "starting circuit breaker" information (switch ID: 8FBC224F-F09C-4881-B45E-0FD3F0C50E72-11577) recorded in the distribution network line ledger in Table 2. In this example, the information matches completely, so no marking is made. If they do not match, it is marked as "ledger inconsistency".

[0045] V. Generate governance work orders and form a closed loop. Data discrepancies between the marked transmission and distribution network line ledgers and topology data, as well as data on disconnected equipment, are verified according to the three disciplines of transmission, transformation, and distribution. Equipment management work orders are generated for each device and sent to specific users based on the equipment's maintenance unit and personnel information. These work orders drive users to complete data verification. For example, in this embodiment, the "220kV Gaoyu 4757 line" is aggregated due to its topological disconnection and ledger inconsistencies.

[0046] Subsequently, the system automatically generates equipment maintenance work orders on a per-equipment basis. The work order content must include at least: Basic device attributes: such as line ID and line name.

[0047] Problem type: Clearly marked as "topology not connected" or "inconsistent records".

[0048] The associated maintenance unit and personnel are automatically associated based on the equipment attributes.

[0049] like Figure 6 As shown, these work orders are sent to the corresponding maintenance and operation (O&M) responsible parties through the system. This initiates a closed-loop governance process: O&M personnel receive work orders → verify data on-site or within the system → correct errors (such as repairing missing topology connections or updating incorrect ledger information) → report the correction results in the system → close the work order after system verification. This process is repeated until all abnormal data is eliminated, thereby continuously improving the data quality of the power grid's "one map".

[0050] VI. Computer Equipment Finally, the present invention also relates to a computer device, which includes a memory, a processor, and a computer program stored in the memory. When the computer program is executed by the processor, it can perform all the steps S1 to S5 described above, automatically completing the correction of the consistency between the topology of the transmission and distribution network equipment and the ledger.

[0051] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for topology correction of transmission and distribution equipment to ensure consistency between topology and ledger records, characterized in that, Includes the following steps: S1. Extract the ledger information and topology connection information of all equipment in the transmission, transformation and distribution network from the production management system, and construct a logical connection graph of power grid equipment with equipment as nodes and the connection relationship between equipment as edges based on the topology connection information; S2. Based on the logical connectivity diagram of power grid equipment, a graph theory traversal algorithm is used to check the internal topology connectivity of the main equipment of each discipline of transmission, transformation and distribution, and to mark the disconnected equipment. S3. Taking the transmission line as the object, based on the logical connection diagram of the power grid equipment, the topological connectivity of the line to the busbars of the substations on both sides is checked using the hierarchical traversal algorithm. The actual connected substations are verified to be consistent with the information in the ledger, and the non-connected or inconsistent transmission lines are marked. S4. Taking the distribution network lines as the object, based on the logical connection diagram of the power grid equipment, use the hierarchical traversal algorithm to check the topological connectivity of the distribution network lines to the substation bus and circuit breakers, verify whether the actual connected circuit breakers are consistent with the information in the ledger, and mark the distribution network lines that are not connected or inconsistent. S5. Summarize all tagging information, generate governance work orders by device, and send them to the responsible maintenance entity to drive data verification and correction.

2. The method for topology correction of transmission and distribution equipment to ensure consistency between topology and ledger as described in claim 1, characterized in that, The criteria for internal topology connectivity verification are as follows: if a complete link can be formed by traversing all devices under the master device through graph theory traversal algorithm, it is considered connected; otherwise, it is considered disconnected.

3. A method for topology correction of transmission and distribution equipment to ensure consistency between topology and ledger data, as described in claim 1 or 2, characterized in that, In S3, the hierarchical traversal algorithm starts from any end device of the transmission line and traces back along the connection relationship towards the substation bus.

4. A method for topology correction of transmission and distribution equipment to ensure consistency between topology and ledger data, as described in claim 1 or 2, characterized in that, In S4, the hierarchical traversal algorithm starts from the starting device of the distribution network line and traces back to the substation along the connection relationship to verify the topological connectivity to the substation bus and circuit breaker respectively.

5. A method for topology correction of transmission and distribution equipment to ensure consistency between topology and ledger data, as described in claim 1 or 2, characterized in that, The main equipment includes transmission lines, substation busbars, transformers, and distribution network lines.

6. The method for topology correction of transmission and distribution equipment to ensure consistency between topology and ledger as described in claim 5, characterized in that, The subordinate equipment of transmission lines and distribution lines includes conductors, cables and external connection lines, and the subordinate equipment of distribution lines also includes pole-mounted switches; the subordinate equipment of substation busbars and transformers includes internal connection lines, circuit breakers and disconnectors.

7. The method for topology correction of transmission and distribution equipment to ensure consistency between topology and ledger as described in claim 6, characterized in that, The ledger information includes the equipment name, equipment ID, and the plant or distribution network line to which the equipment belongs; the topology connection information is the connection terminal information of the equipment.

8. The method for topology correction of transmission and distribution equipment to ensure consistency between topology and ledger as described in claim 7, characterized in that, In S5, a governance work order includes the device's log information, the type of problem, the relevant maintenance unit, and the corresponding maintenance personnel; among them, the problem types include connectivity issues and inconsistencies.

9. A method for topology correction of transmission and distribution equipment to ensure consistency between topology and ledger data, as described in claim 8, characterized in that, In S5, the driving data verification and correction form a closed-loop process, which includes: work order reception, data verification, error correction, result feedback, until the problem associated with the governance work order is resolved.

10. A computer device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, When the computer program is executed by the processor, it implements the steps of the method for topology correction of transmission and distribution equipment as described in claim 9, so as to correct the consistency between the topology and the ledger of the distribution network equipment.

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