Intelligent graph form ticket system with topology verification in power distribution program

Abstract

The invention discloses an intelligent graph ticketing system with topology verification in a power distribution program. Comprising a plurality of modules such as a data access and preprocessing module, a single line diagram topology coloring module and an equipment state intelligent identification module, and the data access module can access and preprocess data such as a distribution network GIS (Geographic Information System) graph model; the topology coloring module marks an area during ticket simulation; the intelligent identification module can identify the equipment state and the wiring mode; the operation ticket intelligent generation module generates operation steps through a graphic platform and can perform integrated verification; the drawing ticket anti-error checking module carries out ticket face and topology anti-error checking; the operation sequence generation and security check module generates a reasonable operation sequence and checks the reasonable operation sequence; the remote control operation pre-checking module checks the remote control operation working environment state and the equipment condition; the automatic remote control execution module initiates an execution request; the programmed operation monitoring and log recording module provides a monitoring interface and records ticket formation days. The system improves the efficiency and accuracy of operation ticket generation, and guarantees the operation safety.

Description

Technical Field

[0001] The invention relates to the technical field of power system dispatching operation, and in particular to an intelligent graph-based ticketing system with topology verification in a power distribution program. Background Art

[0002] As the load of the power grid increases year by year, the main grid structure becomes increasingly complex, and the workload of each dispatcher is getting heavier. How to improve the efficiency of dispatching and control operations under the condition of limited dispatching personnel is currently an urgent consideration. The "Action of the Dispatching Organization of the Municipal Level of a Provincial Power Grid - Sub-Plan for the Integrated Control Action" requires the development of a self-driving system for provincial and municipal dispatching and control business based on events / scenario: Based on the current status of the dispatching and control business of a certain province, make full use of the existing achievements of the main grid OCS, DCCS, OMS and other systems, design and develop a self-driving business model and control driver program that meets the needs of the automatic control of a certain province; for the maintenance order, method order, and live operation plan, each creates a corresponding plan self-identification, automatic invoicing, pre-operation safety verification, automatic command and programmed operation, post-event safety feedback, and automatic removal and listing of the core function chain, reducing the manual intervention link and improving the efficiency of dispatching and control.

[0003] The DCCS system of a certain province's distribution network was put into operation in 2020. It is the core business system supporting the operation and management of the province's distribution network dispatching. It currently has business function modules such as manual ticket drafting, network orders, power outage and restoration applications, dispatching permits, maintenance business management, information reporting, and dispatching notifications.

[0004] As the practical level of power distribution automation in a certain province's power grid continues to improve, equipment operation requires "remote control", which also creates an urgent need for functions such as intelligent ticketing, programmed commands, safety and error-proofing, and standardized process control.

[0005] At present, the information systems supporting a province's dispatching and control business mainly include OMS, OCS, DCCS, etc. The main network dispatchers need to frequently perform multiple discrete processing operations across systems to complete a complete dispatching and control closed loop. There are many links in manual monitoring and processing, and the control efficiency needs to be further improved.

[0006] A provincial central dispatching DCCS system has been built to realize the online editing of new equipment startup plans and network command execution functions. The technical route and business scenario design have been verified in practice and have all the conditions for promotion to local and municipal dispatching companies.

[0007] After the integration of control and distribution network concentration, the lean management of business development of the municipal power supply bureau has put forward higher requirements for dispatching automation. It not only requires local dispatching automation to do a good job in professional operation control and centralized monitoring of plant and station equipment and distribution network terminal access, but also requires dispatching automation to deeply apply dispatching big data to support the lean management of power supply bureau business, support operation control with indicators, and provide accurate and comprehensive data support for various businesses. However, with the implementation of integrated control and distribution network concentration, all monitoring and controllable businesses are concentrated in the dispatching field. Compared with the integration of control and distribution network concentration, the number of personnel has been greatly reduced and the workload has increased dramatically.

[0008] A provincial power grid safety production management system and distribution network OMS system were put into operation in 2015. The comprehensive power outage and grid connection management module is a functional module that supports the province's distribution network, distribution network maintenance plan, maintenance application form, grid startup plan and other businesses. It supports the distribution network dispatching operation, but the relevant functional modules in the system only implement the circulation and approval of maintenance business forms.

[0009] At present, during the daily maintenance of distribution networks, there are many distribution network tripping incidents and heavy maintenance tasks. Most of the execution process still needs to be completed manually. There is a lack of technical means to complete the automatic execution, analysis and safety audit of the maintenance process, which leads to reduced power grid operation and maintenance efficiency and reduced power supply reliability of distribution networks. It is urgent to adopt technical means to meet the current requirements of integrated control and intensive distribution network business development. Summary of the invention

[0010] The present invention is an intelligent graphical ticketing system with topology verification in the power distribution program. The system improves the efficiency and accuracy of operation ticket generation based on the built-in multi-data module component, realizes multi-data access and integrated processing, prevents topology structure errors in the operation ticket generation process, meets various safety verification requirements, ensures the rationality of the operation sequence and guarantees safe execution. In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows.

[0011] An intelligent graphical ticketing system with topology verification in a power distribution program is characterized in that the data system monitors and optimizes the process of generating operation tickets through the hierarchical branching architecture of multi-module components and the construction of internal data processing processes of data module components.

[0012] As a preferred technical solution of the present invention, the intelligent diagram ticketing system with topology verification in the power distribution program is characterized in that the system optionally includes the following modules: S-1 data access and preprocessing module, S-2 single-line diagram topology coloring module, S-3 equipment status intelligent identification module, S-4 power grid wiring method identification module, S-5 operation ticket intelligent generation module, S-6 diagram ticketing anti-mischeck module, S-7 operation sequence generation and safety check module, S-8 remote control operation pre-check module, S-9 automatic remote control execution module, S-10 programmed operation monitoring and log recording module.

[0013] As a preferred technical solution of the present invention, the S-1 data access and preprocessing module: accesses the distribution network GIS map data of 14 power supply bureaus of the provincial power grid through the distribution network OCSⅢ area interface service, and preprocesses these data; The S-2 single-line diagram topology coloring module: During the operation ticket drafting process, the system automatically performs topology coloring and marks the current power-off area, energized area and grounded area on the diagram in real time; The S-3 equipment status intelligent identification module: uses the electrical topology connection relationship between equipment, remote signaling information and telemetry information to realize intelligent identification of equipment status; The S-4 grid connection mode identification module: based on the device status identification, provides a series of information about the device information, topological relationship and real-time status of the device involved in the operation purpose, and further identifies the grid connection mode; The S-5 operation ticket intelligent generation module: supports the selection of equipment elements including but not limited to switches, knife switches, distribution transformers, fuses, load switches, and circuit breakers through the graphic platform to obtain equipment and target status information, and provides typical operation steps for the equipment; The S-6 graphic ticketing error prevention verification module: in the graphic intelligent ticketing process, ticket face verification is performed, including scheduling operation term verification and equipment name verification, which is used for topology error prevention verification; The S-7 operation sequence generation and safety verification module: after the operation ticket reasoning is completed, it generates a specific switching operation sequence for the operation ticket and performs a safety verification; The S-8 remote control operation pre-check module: checks the remote control device status, topology and operation mode for, but not limited to, the operation sequence and instructions before the remote control operation is performed; The S-9 automatic remote control execution module: All the programmed operations of the distribution network initiate the automatic remote control execution request service to the interface service of zone III of the distribution network OCS system; The S-10 programmed operation monitoring and logging module provides a programmed operation monitoring interface, including but not limited to the number of operation tickets executed, the operation tickets being executed, and the operation tickets that have been successfully executed. The programmed execution status can be monitored and visualized by area and equipment.

[0014] As a preferred technical solution of the present invention, the S-1 data access and preprocessing module includes the following submodules: S-1-1 data synchronization submodule: supports full graphics and model updates, and real-time synchronization of incremental graphics and models; S-1-2 Data verification module: It has independent storage for the distribution network OCS model and the GIS system distribution network model. When the distribution network OCS model is connected, the GIS_ID information of the device pair in the distribution network OCS model is also connected; S-1-3 Abnormal data alarm module: It has the function of verifying the distribution network feeder single-line diagram and feeder model data, and automatically detects abnormal data and gives prompts.

[0015] As a preferred technical solution of the present invention, the S-2 single-line diagram topology coloring module is specifically: topology coloring, which supports the system to automatically perform topology coloring during the ticket drafting process; real-time marking, which marks the current power-off area, energized area and grounded area on the graph in real time.

[0016] As a preferred technical solution of the present invention, the S-3 equipment status intelligent identification module is specifically: equipment status identification, which comprehensively utilizes the electrical topological connection relationship, telesignaling information and telemetry information between devices to realize intelligent identification of equipment status; grid wiring method identification, which, on the basis of equipment status identification, gives the equipment information, topological relationship and real-time status of the equipment involved in the operation purpose, etc., to further identify the grid wiring method.

[0017] As a preferred technical solution of the present invention, the S-5 operation ticket intelligent generation module specifically includes: A-1 Operation Reasoning Submodule: Upgrade the management function of the abnormal diagnosis rules of the operation ticket information, and automatically reason and evaluate each operation item according to the operation content of the operation ticket; A-2 Graphic Intelligent Ticketing Sub-Module: Through the graphic platform, it supports clicking on device graphics to obtain device and target status information, and provides typical operation steps for the device.

[0018] The specific operation steps of the A-2 intelligent ticket submodule are as follows: The A-2-1 system supports the selection of switches, knife switches, distribution transformers, fuses, load switches, circuit breakers and other equipment elements through the graphic platform to obtain equipment and target status information, and provides typical operation steps for the equipment; A-2-2 According to the operation steps generated by the dispatcher by clicking the equipment graphic element on the graphic platform, the detailed operation steps are automatically generated through the operation ticket reasoning rule module, and the distribution network dispatching operation command tickets that meet the specifications are generated one by one; A-2-3 supports device status ticketing, selects the initial and final status of the device, and automatically and intelligently generates a distribution network operation ticket based on the logical relationship of the device operation; A-2-4 integrates with the automatic driving function of the distribution network dispatching and control business, and conducts safety verification on the generated distribution network operation ticket through the simulation environment and safety error prevention function provided by the automatic driving function of the distribution network dispatching and control business; A-2-5 calls the single-line diagram topology analysis function to visualize the operating equipment and power outage areas; A-2-6 Graphical invoicing supports the search for target equipment and automatic positioning based on the single-line diagram, and implements fuzzy query based on voltage level, equipment name, equipment area, etc. It supports automatically locating the target equipment in the single-line diagram after selecting the query result with a single click; A-2-7 supports manual editing and modification of operation tickets generated by graphic intelligence. If the remote control operation order is manually edited, the remote control operation will be prohibited.

[0019] As a preferred technical solution of the present invention, the S-6 graphic ticket anti-error verification module includes: B-1 Ticket Verification Submodule: It has the ticket verification function during the graphic intelligent ticketing process; B-2 Topology error prevention check submodule: It has topology error prevention check function, including but not limited to preventing the switch from being pulled with load, preventing the tunnel from being closed / ground wire being hung with power, and preventing the ground wire from being supplied with power.

[0020] The B-1 par value verification submodule further comprises the following specific steps: B-1-1 During the graphic intelligent ticketing process, the ticket face verification is carried out, including the dispatching operation terminology verification and equipment name verification; The B-1-2 system has the function of checking the terminology of the operation ticket. Different equipment has different operation status terms. When the operation terms in the instructions do not meet the relevant writing specifications, relevant error prevention reminders will be issued; The B-1-3 system supports verification of the equipment names involved in the operation ticket text. For equipment switching operation instructions, it checks the existence of equipment names and equipment IDs, and issues relevant error prevention reminders for any problems found.

[0021] The B-2 topology error prevention verification submodule has the following specific steps: B-2-1 When opening / closing the grounding switch, determine the switch status on the power supply path of the grounding switch: if there is a switch disconnected, the five-defense check has passed; otherwise, if all switches on the path are closed, the five-defense check has failed; B-2-2 When opening / closing the knife switch, first determine whether there is a transformer behind the knife switch. If there is no transformer, no judgment is required; if there is a transformer, determine whether there is a switch disconnected in the power supply path in front of the knife switch: if there is a switch disconnected, it complies with the five-protection rule; if all switches are closed, it is judged that it does not pass the five-protection rule; B-2-4 When the switch is closed, it is necessary to determine the state of the grounding switch on the power supply path behind the target switch: if the grounding switch is closed, the evaluation fails; otherwise, if the grounding switches on the power supply path behind are open, the evaluation passes; B-2-5 In the process of graphic intelligent ticketing, the different operating states of various types of electrical equipment are identified, including but not limited to operating state, hot standby state, cold standby state, maintenance state, etc.; when issuing tickets, it automatically checks whether the real-time state of the equipment conflicts with the initial state of the equipment required by the operation.

[0022] As a preferred technical solution of the present invention, the S-10 programmed operation monitoring and log recording module includes: programmed operation monitoring, providing a programmed operation monitoring interface, including the number of operation tickets executed, the operation tickets being executed, and the operation tickets executed successfully; operation log recording: whole ticket verification log, the DCCS system sends the whole ticket information to the OCS system, the OCS verifies the whole ticket operation, and sends the verification results to the DCCS system.

[0023] The beneficial effects of adopting the above technical solution are: the present invention constructs an intelligent diagram-forming ticket system with topology verification in the power distribution program, which integrates data acquisition and processing, single-line diagram topology coloring, intelligent identification, intelligent generation, anti-error verification, operation ticket execution and recording; it realizes full automation of information preprocessing and reasonable generation, verification and reasonable execution of operation tickets, improves efficiency while ensuring compliance and safety of the operating process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 :Functional logic structure diagram DETAILED DESCRIPTION

[0025] The present invention is described in detail in the following examples. All the equipment used in the present invention are conventional commercial products and can be directly obtained through market purchase.

[0026] In the description of the following embodiments, specific details such as specific system structures, technologies, etc. are provided for illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0027] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, components.

[0028] 1. Automatically generate a maintenance order See also Figure 1 In a certain area’s distribution network system, in order to ensure the reliability and efficiency of power supply, the distribution network maintenance work was upgraded to intelligent one, among which the “automatic ticketing” function played a key role in the maintenance process.

[0029] 1. Data access and preprocessing 1.1 Data access process During the distribution network maintenance work in the area, the technical team successfully established a connection channel with the distribution network GIS map data and real-time data such as equipment telesignaling and telemetry of 14 power supply bureaus in a provincial power grid through the distribution network OCS III zone interface service; this interface service is like a bridge, transmitting various data to the system accurately; the distribution network GIS map data details the geographical distribution and equipment connection relationship of the entire distribution network, providing intuitive topological structure information for subsequent maintenance work; the equipment telesignaling signal reflects the switch's open and close status, the position of the knife switch and other information in real time, while the telemetry data includes key operating parameters such as voltage, current, and power. These real-time data provide a basis for the system to grasp the equipment status in real time.

[0030] 1.2 Data preprocessing measures 1.2.1 Guarantee of Data Synchronization The data synchronization function is one of the core functions of the system. In actual operation, both the full update of graphics and models and the real-time synchronization of local incremental graphics and models can be effectively guaranteed: when a new substation or line equipment is connected to the distribution network, the system can quickly detect the change in the topology structure and update the full amount of graphics and model data in time. During the access process of a new community distribution network, the system accurately obtained the connection information of the new line and the model data of the relevant equipment, ensuring the system's accurate understanding of the entire distribution network structure; at the same time, for some local adjustments that may occur in daily operation, such as the transformation of a branch line or the replacement of equipment, the real-time synchronization function of incremental graphics and models can also play a role in time: when a transformer on a line is replaced, the system immediately updates the relevant graphics and model data, so that the data in the system is always highly consistent with the actual distribution network situation.

[0031] 1.2.2 Rigorousness of data verification In order to ensure the accuracy and completeness of the data, the system has taken strict data verification measures during the data access process. The distribution network OCS diagram model and the GIS system distribution network diagram model are stored independently, and the corresponding GIS_ID information must be included when accessing the OCS diagram model. This strict storage and access method ensures the data consistency and relevance between different data sources: During a data check, it was found that the connection relationship of a device in a distribution network feeder single-line diagram did not match the model data. After investigation, it was found that it was caused by manual input errors in the early stage. The verification function of the distribution network feeder single-line diagram and the feeder model data discovered this anomaly in time and issued a prompt. The maintenance personnel quickly made corrections based on the prompts, avoiding maintenance operation errors that may be caused by erroneous data.

[0032] 2. Analysis based on maintenance order data 2.1 Maintenance Order Submission and Data Acquisition When maintenance personnel were preparing to overhaul a transformer at a substation, they submitted a maintenance application form through the system. This maintenance application form contained a wealth of information: transformer equipment information (including model, capacity, etc.), planned start time and end time (this maintenance is planned to be carried out during a certain period of time on the weekend to reduce the impact on user power supply) and detailed work content (such as replacing some aging parts and conducting related electrical tests); at the same time, the system maintains a close connection with the ground distribution network OMS system, obtaining the latest maintenance order data at a frequency of every 30 seconds.

[0033] In addition, the system also obtains the distribution network equipment defect records and abnormal signal records related to the equipment. These additional data help the system to have a more comprehensive understanding of the equipment status.

[0034] 2.2 Repair Order Analysis Process After receiving the maintenance application form, the system immediately starts the power semantic analysis capability to parse the maintenance form. Through advanced semantic analysis algorithms, the system can accurately extract key information related to the maintenance of the transformer: the specific names and specifications of the parts that need to be replaced, as well as the test items and requirements that need to be carried out, etc. At the same time, the system builds an intelligent invoicing knowledge base based on this parsed information and automatically extracts keywords. These keywords will serve as an important basis for the subsequent generation of operation tickets: through the analysis of the work content of "replacing the transformer oil temperature sensor", the system extracts keywords such as "oil temperature sensor" and "replacement", and incorporates them into the knowledge base so that this operation step can be accurately reflected when generating the operation ticket.

[0035] 3. Generate an operation ticket 3.1 Operation Ticket Generation Logic Based on the parsed information about transformer maintenance, the system automatically generates a series of operation tickets including load transfer, equipment power outage, equipment power restoration and load recovery operation tickets. For transformer maintenance, the contents of these operation tickets are closely related to each link of the maintenance process.

[0036] 3.2 Load transfer operation ticket The first is the load transfer operation ticket. The system determines the specific operation steps for transferring the load to other lines based on the load of the transformer and the topological structure of the distribution network: the operation ticket lists in detail the need to disconnect certain outgoing line switches connected to the transformer and close the corresponding contact switches to smoothly transfer the load to the adjacent line. In this process, the system takes into account the real-time status of the equipment and ensures that the relevant switches are in a normal closed state before the operation through the analysis of telesignaling and telemetry data, so that the load transfer operation can be performed.

[0037] 3.3 Equipment power outage operation ticket The equipment power outage operation ticket specifies the specific steps for powering off the transformer: first disconnecting the high-voltage side switch of the transformer, then disconnecting the low-voltage side switch, and noting safety precautions during the operation, such as the need to perform an electrical test before disconnecting the switch to ensure that the equipment has been powered off to avoid the risk of electric shock to the operator. At the same time, when generating the operation ticket, the system automatically checks whether the initial state of the equipment is consistent with the operation requirements. If the high-voltage side switch of the transformer is already in the disconnected state before the operation (possibly due to a previous fault or other reasons), the system requires the operator to confirm the current state and adjust the operation steps according to the actual situation.

[0038] 3.4 Equipment power-on operation ticket After the maintenance is completed, the system generates a power-on operation ticket for the equipment. The operation steps are the opposite of the power-off operation: first close the low-voltage side switch, then close the high-voltage side switch. During the power-on process, the system also pays attention to the equipment status to ensure that each device is in a safe power-off state before power-on, and monitors the operating parameters of the equipment in real time during the power-on process, such as voltage, current, etc., so that an alarm can be issued in time if an abnormal situation occurs.

[0039] 3.5 Load recovery operation ticket The last is the load restoration operation ticket, which is used to restore the previously transferred load to the transformer. The operation steps include: disconnecting the contact switch, closing the outgoing line switch, and gradually restoring the load to normal state. During this process, the system will adjust according to the real-time load situation of the distribution network to ensure that the load restoration process is smooth and will not cause excessive impact on the distribution network.

[0040] Through the maintenance order number, the operation ticket is closely associated with the maintenance order. The operator can easily open the maintenance order number to view the details of the maintenance order and the corresponding operation ticket. At the same time, the system classifies the maintenance operation tickets for easy query and statistics according to types such as load transfer, equipment power outage, equipment power restoration, and load recovery. This classification management method greatly improves the efficiency of finding operation tickets, making it convenient for operators to quickly locate relevant operation tickets when needed. In addition, the system also supports importing historical tickets into tickets and manual addition, modification, query, and invalidation of maintenance operations: If it is found that a certain operation step needs to be adjusted during the maintenance process, the operator can achieve it by manually modifying the operation ticket; if it is necessary to refer to the operation ticket of a previous similar maintenance work, it can also obtain the relevant operation ticket through the import historical ticket function, and modify and improve it on this basis.

[0041] Through the implementation of the above-mentioned automatic ticket generation function, the accuracy and efficiency of operation ticket generation have been improved in the distribution network maintenance work in a certain area, especially in the maintenance process of a transformer in a certain substation, which has reduced manual operation errors and ensured the smooth progress of maintenance work and the safe and stable operation of the distribution network.

[0042] 2. Automatic ticket generation for new equipment See also Figure 1 In a distribution network system upgrade project in a certain area, a new intelligent switch cabinet was installed. The following is the specific implementation of the "automatic ticketing" related functions during its startup process.

[0043] 1. Data access and preprocessing (related foundations) 1.1 Data access and integration The project team successfully established a stable connection with distribution network-related data sources through the distribution network OCS III zone interface service. This interface service is like an information highway, efficiently transmitting the distribution network diagram model and real-time data to the system. The distribution network diagram model data shows the structural layout of the entire distribution network in detail, including the connection relationship of each device and their location information in geographic space. Real-time data is like a real-time monitor, constantly feeding back the operating status of the equipment. The opening and closing status of the switch and the position of the knife switch are transmitted in real time through telemetering signals, and parameters such as voltage, current, and power are updated in a timely manner through telemetry data.

[0044] 1.2 Ensure data quality 1.2.1 Data synchronization ensures real-time performance In terms of distribution network diagram model data processing, the data synchronization function plays a key role. When the distribution network is upgraded and new equipment and lines are connected, the system can promptly update the full graphics and models: in this project, with the installation of the new intelligent switch cabinet, the system quickly obtained and updated the complete diagram model data including the switch cabinet and its related connecting lines; at the same time, for some local adjustments in daily operation, such as adding a small branch line, the real-time synchronization function of incremental graphics and models ensures that these changes can be immediately reflected in the system, so that the system data is always closely matched with the actual distribution network conditions.

[0045] 1.2.2 Data verification to ensure accuracy In order to avoid the impact of data errors on subsequent operations, the system implements strict data verification. In the process of connecting the distribution network OCS diagram model and the GIS system distribution network diagram model, not only are the two stored separately, but the GIS_ID information corresponding to the equipment when the distribution network OCS diagram model is connected is also carefully checked. During the implementation of the project, there was a case where the ID information of a certain device in the GIS system was inconsistent with the OCS system. Due to the existence of the data verification function, the system issued an alarm in time, and the maintenance personnel quickly made corrections to ensure the consistency and relevance of the data. In addition, the distribution network feeder single-line diagram and feeder model data verification functions have also played a role many times. For example, during a routine inspection, it was found that the connection relationship of a certain line in the single-line diagram did not match the model data. The system immediately prompted an abnormality. After investigation, it was found that it was caused by a manual data entry error in the early stage. The timely prompt avoided operational errors that may be caused by erroneous data.

[0046] 2. Solution analysis and reasoning 2.1 Obtaining comprehensive information During the startup phase of the intelligent switchgear, the system accurately obtained the approved startup plan for the new equipment. This plan covers the key information of the equipment in detail. For example, the rated voltage of the switchgear is 10kV, the rated current is 1000A, the short-circuit withstand current is 31.5kA and other basic parameters; the startup steps clearly specify the operation sequence, such as first checking whether the incoming switch is in the disconnected state, which is a prerequisite for startup; at the same time, the plan also lists safety precautions in detail, such as emphasizing that during the startup process, close attention should be paid to voltage changes to prevent overvoltage from damaging the equipment and avoid safety accidents caused by misoperation; in addition, the system also combines data such as the operation status of the regional power grid obtained from the OMS system. At that time, the OMS system showed that the overall load level of the power grid in the region was moderate and the voltage stability was good, but a nearby line was undergoing planned maintenance. This information has an important impact on the startup process of the intelligent switchgear.

[0047] 2.2 In-depth analysis solution Based on the characteristics of the standard document fields of the new equipment startup plan, the system automatically parses the startup content with the help of the text semantic parsing component. Taking the switch operation of the intelligent switch cabinet as an example, the system accurately parses out that each switch needs to be operated in a specific order during the startup process: First, the system determines the state of the incoming switch. If it is in the disconnected state and meets the startup conditions, the specific bus charging switch is closed; during the bus charging process, the system continuously monitors the voltage data, and when the bus voltage stabilizes within the specified range, other related switches such as feeder switches are closed in sequence; at the same time, the system also accurately parses the setting requirements of the protection device: according to the short-circuit capacity of the power grid and the rated parameters of the switch cabinet, the system determines that the overcurrent protection is set to 1200A, the action time is 0.5 seconds, and the grounding protection adopts the zero-sequence current protection mode, and the sensitivity is set to 0.2A. During the parsing process, the system fully considers the real-time topology of the power grid and the current status of the equipment.

[0048] Since there were lines under maintenance nearby, the system adjusted the operation steps accordingly in the startup plan to avoid affecting the maintenance lines. For example, when closing certain switches, additional confirmation steps were added to ensure that the equipment related to the maintenance lines would not be operated by mistake. At the same time, the system also properly handled the abnormal situation of the current status of the equipment: when checking the equipment status before starting, it was found that the display position of the remote signal of a certain switch did not match the actual position. The system added a detailed inspection and manual confirmation step for the switch in the startup plan. According to the system prompt, the maintenance personnel actually checked the switch and found that it was caused by a loose joint in the signal transmission line. After repair, they reconfirmed that the switch status was normal before continuing the subsequent startup operation.

[0049] 3. Smart Ticketing 3.1 Generate detailed operation ticket Based on the above precise analysis results and real-time topological data of the equipment, the system intelligently generates an operation ticket, which provides a detailed operation guide for the operator: first, the initialization setting operation of the switch cabinet. In terms of parameter setting, the operator needs to set the protection setting of the switch cabinet to overcurrent protection 1200A, action time 0.5 seconds, grounding protection sensitivity 0.2A, etc. according to the operation ticket generated by the system; in the connection check link, the operation ticket clearly requires checking whether the bus connection is firm, whether the wiring of each switch is normal, and whether the grounding connection is reliable; followed by the switch separation and closing operation steps during the startup process. The operation ticket lists in detail the order and requirements of each step of the operation. After the bus charging is completed, a specific feeder switch needs to be closed. The operation ticket indicates the number of the feeder switch and the matters that need to be paid attention to when closing, such as observing whether the relevant indicator lights are on and confirming whether the current flows into the feeder normally.

[0050] 3.2 Safety verification to ensure safe operation During the ticketing process, the system conducts strict topology error prevention checks. When judging whether there is a situation where the switch is pulled with load, the system will analyze the possible impact of each operation step based on real-time topological data and current equipment status. If there is a risk of pulling the switch with load in a certain operation step, the system will give clear requirements in the operation ticket for the operator to reconfirm the status of the relevant equipment to ensure safe operation; the system also conducts detailed checks for situations such as live earthing switches / grounding wires and live earth wire power transmission. If such risks are found, the system will adjust the operation steps or give corresponding preventive measures to avoid dangerous situations.

[0051] 3.3 Support manual adjustment The parsed operation ticket content supports manual adjustment by the dispatcher. During the actual startup process, the dispatcher further optimized the operation ticket based on the on-site conditions and experience. Taking into account the on-site environmental factors, the dispatcher added a reconfirmation step for a certain switch status before and after the operation to ensure the accuracy of the operation; at the same time, for some parameter setting values, the dispatcher made fine adjustments based on the actual grid operation conditions and adjusted the overcurrent protection setting to 1250A to better adapt to possible fluctuations in the grid and ensure the safety and stability of the equipment during the startup process.

[0052] Through the implementation of the above-mentioned "automatic ticketing" related functions, the new intelligent switch cabinet successfully completed the startup process. During the entire process, the system provided operators with accurate and safe operation guidance through precise data processing, solution analysis and safety verification, ensuring the stable operation of the distribution network system.

[0053] 3. Automatic ticket issuance by single method See also Figure 1,During the operation of the distribution network system in a certain area, due to the ,changes in the grid load and equipment maintenance requirements, the ,distribution network operation mode needs to be adjusted.

[0054] 1. Method sheet acquisition and data association 1.1 Obtaining the method sheet and related rules When the distribution network operation mode needs to be adjusted, the system starts the relevant process. The system first interacts with the main network OMS system to accurately obtain the mode sheet, which records in detail the key information required for this operation mode adjustment, including specific information of the operating equipment, detailed description of the adjustment content, and relevant approval opinions, etc. The mode sheet clearly states that the operation mode of a certain important line needs to be adjusted to optimize the power grid load distribution in the area.

[0055] At the same time, the system interacts with the DCCS system of the central and local distribution main grid to obtain the rules and logic for generating operation tickets. These rules and logic are formulated based on the actual operation and safety requirements of the distribution network system, providing a basis for the subsequent automatic generation of accurate operation tickets.

[0056] 1.2 Access to graphics and real-time data In order to better support the automatic ticketing of the mode single, the system accesses the mapping model and real-time data through the distribution network OCS III zone interface service. The mapping model data presents the topology of the current power grid and clearly shows the connection relationship between various devices. The real-time data reflects the real-time operating status of the equipment, such as the opening and closing status of the switch, the load of the line, etc. Through real-time data monitoring, the current load of a certain line is close to its rated capacity, which provides an important reference for mode adjustment.

[0057] 2. Automatic ticketing process 2.1 Analysis method single information The system parses the information on the face of the acquired method ticket. Taking the method adjustment of changing the power supply path of a certain line as an example, the system automatically extracts key information such as the operating equipment, method adjustment content, and method approval opinions. Specifically, the system parses the switches and circuit breakers that need to be operated, as well as the adjusted connection method and related requirements. It is necessary to switch the power supply of line A from substation A to substation B. The system accurately parses out the switch X and circuit breaker Y that need to disconnect line A from substation A, and at the same time close the switch Z and circuit breaker W that connect line A to substation B.

[0058] 2.2 Generate an operation ticket According to the parsing function, the system generates structured comprehensive instruction information and calls the operation ticket generation rules and logic of the DCCS system of the central and local dispatching main network to automatically generate relevant operation tickets corresponding to the method order. In the operation ticket, the method order is displayed by associating the method order number, which is convenient for operators to view and check.

[0059] The generated operation ticket closely revolves around the steps for operating the relevant equipment according to the adjustment requirements. For example, in the above example, the operation ticket records in detail the operation steps of first opening switch X and knife switch Y, and then closing switch Z and knife switch W; at the same time, the operation ticket also indicates the precautions and safety requirements during the operation.

[0060] 2.3 Safety Verification During the process of generating the operation ticket, the system performs relevant safety checks: first, it automatically checks whether the real-time status of the equipment conflicts with the initial status of the equipment required by the operation. Before disconnecting switch X, the system checks whether the current status of switch X is closed. If not, it will issue a warning to prompt the operator to confirm and handle the situation.

[0061] In addition, the system also performs topology error prevention verification to ensure that the operation complies with safety regulations to avoid dangerous situations such as pulling the knife switch under load, closing the ground knife / hanging the ground wire under power, and supplying power with the ground wire under power. Before closing switch Z and knife switch W, the system will check the load conditions of related lines and equipment to ensure that no load operation will occur; if potential risks are found, the system will adjust the operating steps or give corresponding preventive measures to ensure the safety of the operation.

[0062] Through the implementation of automatic ticket generation in this mode, the distribution network system can accurately and efficiently generate operation tickets during the operation mode adjustment process and ensure the safety and standardization of operations through strict safety checks, thus ensuring the stable operation of the distribution network system.

[0063] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An intelligent graphic ticketing system with topology verification in power distribution program, characterized by: The data system monitors and optimizes the process of operation ticket generation through the hierarchical branching architecture of multi-module components and the construction of internal data processing processes of data module components.

2. According to claim 1, an intelligent graphic ticketing system with topology verification in a power distribution program is characterized in that: The system optionally includes the following modules: S-1 data access and preprocessing module, S-2 single-line diagram topology coloring module, S-3 equipment status intelligent identification module, S-4 power grid wiring method identification module, S-5 operation ticket intelligent generation module, S-6 diagram ticket anti-mischeck module, S-7 operation sequence generation and safety check module, S-8 remote control operation pre-check module, S-9 automatic remote control execution module, S-10 programmed operation monitoring and log recording module.

3. The intelligent diagram ticketing system with topology verification in the power distribution program according to claim 2 is characterized by: The S-1 data access and preprocessing module: accesses the power supply bureau's distribution network GIS map data through the distribution network OCS III zone interface service, and preprocesses these data; The S-2 single-line diagram topology coloring module: During the operation ticket drafting process, the system automatically performs topology coloring and marks the current power-off area, energized area and grounded area on the diagram in real time; The S-3 equipment status intelligent identification module: uses the electrical topology connection relationship between equipment, remote signaling information and telemetry information to realize intelligent identification of equipment status; The S-4 grid connection mode identification module: based on the device status identification, provides a series of information about the device information, topological relationship and real-time status of the device involved in the operation purpose, and further identifies the grid connection mode; The S-5 operation ticket intelligent generation module: supports the selection of equipment elements including but not limited to switches, knife switches, distribution transformers, fuses, load switches, and circuit breakers through the graphic platform to obtain equipment and target status information, and provides typical operation steps for the equipment; The S-6 graphic ticketing error prevention verification module: in the graphic intelligent ticketing process, ticket face verification is performed, including scheduling operation term verification and equipment name verification, which is used for topology error prevention verification; The S-7 operation sequence generation and safety verification module: after the operation ticket reasoning is completed, it generates a specific switching operation sequence for the operation ticket and performs a safety verification; The S-8 remote control operation pre-check module: checks the remote control device status, topology and operation mode including but not limited to the operation sequence and instructions before the remote control operation is executed; The S-9 automatic remote control execution module: All the programmed operations of the distribution network initiate the automatic remote control execution request service to the interface service of zone III of the distribution network OCS system; The S-10 programmed operation monitoring and logging module provides a programmed operation monitoring interface, including but not limited to the number of operation tickets executed, the operation tickets being executed, and the operation tickets that have been successfully executed. It monitors and visualizes the programmed execution status by area and equipment.

4. The intelligent graphic ticketing system with topology verification in the power distribution program according to claim 3 is characterized by: The S-1 data access and preprocessing module includes the following submodules: S-1-1 data synchronization submodule: used for full graphics and model updates, and real-time synchronization of incremental graphics and models; S-1-2 Data verification module: It carries the distribution network OCS model and the GIS system distribution network model, and stores them independently. When the distribution network OCS model is connected, the GIS_ID information of the equipment in the distribution network OCS model is also connected; S-1-3 Abnormal data alarm module: verify the distribution network feeder single-line diagram and feeder model data, automatically detect abnormal data and give prompts.

5. According to claim 3, an intelligent diagram ticketing system with topology verification in a power distribution program is characterized in that: The S-2 single-line diagram topology coloring module is specifically as follows: according to the actual grid connection relationship, a network topology model is established and colored. During the ticket drafting process, the system automatically performs topology coloring; real-time marking, the current power-off area, energized area and grounded area are marked on the graph in real time.

6. The intelligent graphic ticketing system with topology verification in the power distribution program according to claim 3 is characterized by: The S-3 equipment status intelligent identification module is specifically as follows: equipment status identification, which comprehensively utilizes the electrical topological connection relationship, telesignaling information and telemetry information between devices to realize intelligent identification of equipment status; grid wiring method identification, which, based on the equipment status identification, gives the equipment information, topological relationship and real-time status of the equipment involved in the operation purpose, and further identifies the grid wiring method.

7. The intelligent graphic ticketing system with topology verification in the power distribution program according to claim 3 is characterized by: The S-5 operation ticket intelligent generation module specifically includes: A-1 Operation Reasoning Submodule: Upgrade the abnormal diagnosis rules for the operation ticket information, and automatically reason and judge each operation item according to the operation content of the operation ticket; A-2 Graphic Intelligent Ticketing Sub-Module: Click on the device icon through the graphic platform to obtain the device and target status information, and provide typical operation steps for the device.

8. The intelligent graphic ticketing system with topology verification in the power distribution program according to claim 7 is characterized by: The specific operation steps of the A-2 intelligent ticket submodule are as follows: The A-2-1 system uses a graphic platform to select equipment elements including but not limited to switches, knife switches, distribution transformers, fuses, load switches, and circuit breakers to obtain equipment and target status information, and provides typical operation steps for the equipment; A-2-2 According to the operation steps generated by the dispatcher by clicking the equipment graphic element on the graphic platform, the detailed operation steps are automatically generated through the operation ticket reasoning rule module, and the distribution network dispatching operation command tickets that meet the specifications are generated one by one; A-2-3 supports device status ticketing, selects the initial and final status of the device, and automatically and intelligently generates a distribution network operation ticket based on the logical relationship of the device operation; A-2-4 integrates with the automatic driving function of the distribution network dispatching and control business, and conducts safety verification on the generated distribution network operation ticket through the simulation environment and safety prevention provided by the automatic driving function of the distribution network dispatching and control business; A-2-5 calls the single-line diagram topology analysis to realize the visualization of operating equipment and power outage areas; A-2-6 When invoicing graphically, the target device is searched and automatically located based on the single-line diagram, and fuzzy search is realized according to conditions such as voltage level, device name, and device region. After clicking to select the query result, the target device is automatically located in the single-line diagram; A-2-7 manually edits and modifies the operation ticket generated by graphic intelligence. For remote control operation orders that have been manually edited, remote control operations are prohibited.

9. The intelligent graphic ticketing system with topology verification in the power distribution program according to claim 3 is characterized by: The S-6 graphic ticket anti-error verification module includes: B-1 Ticket face verification submodule: performs ticket face verification during the graphic intelligent ticketing process; B-2 Topology error prevention check submodule: Topology error prevention check includes preventing the switch from being pulled under load, preventing the tunnel from being closed / grounded under power, and preventing the ground wire from being supplied with power.

10. The intelligent diagram ticketing system with topology verification in the power distribution program according to claim 9, characterized in that: The specific steps of the B-1 par value verification submodule are as follows: B-1-1 During the graphic intelligent ticketing process, the ticket face verification is carried out, including the dispatching operation terminology verification and equipment name verification; The B-1-2 system has the function of checking the terminology of the operation ticket. Different equipment has different operation status terms. If the operation terms in the instructions do not meet the relevant writing specifications, relevant error prevention reminders will be issued; The B-1-3 system supports verification of the equipment names involved in the operation ticket text. For equipment switching operation instructions, it checks the existence of equipment names and equipment IDs, and issues relevant error prevention reminders for any problems found.

11. The intelligent graphic ticketing system with topology verification in the power distribution program according to claim 9, characterized in that: The specific steps of the B-2 topology error prevention verification submodule are as follows: B-2-1 When opening / closing the grounding switch, determine the switch status on the power supply path of the grounding switch: if there is a switch disconnected, the five-defense check passes; otherwise, if all switches on the path are closed, the five-defense check fails; B-2-2 When opening / closing the knife switch, first determine whether there is a transformer behind the knife switch. If there is no transformer, no judgment is required; if there is a transformer, determine whether there is a switch disconnected in the power supply path in front of the knife switch: if there is a switch disconnected, it complies with the five-protection rule; if all switches are closed, the judgment fails and does not comply with the five-protection rule; B-2-4 When the switch is closed, the state of the grounding knife switch on the power supply path behind the target switch is determined: if the grounding knife switch is closed, the test is judged as failed; otherwise, if the grounding knife switches on the power supply path behind are all opened, the test is judged as passed; B-2-5 In the process of graphic intelligent ticketing, the different operating states of various types of electrical equipment are identified, including but not limited to operating state, hot standby state, cold standby state, maintenance state, etc.; when issuing tickets, the real-time state of the equipment and the initial state of the equipment required by the operation are automatically checked.

12. The intelligent graphic ticketing system with topology verification in the power distribution program according to claim 3 is characterized by: The S-10 programmed operation monitoring and log recording module includes: programmed operation monitoring, providing a programmed operation monitoring interface, including the number of operation tickets executed, the operation tickets being executed, and the operation tickets that have been successfully executed; operation log recording: whole ticket verification log, the DCCS system sends the whole ticket information to the OCS system, the OCS verifies the whole ticket operation, and sends the verification results to the DCCS system.

Images