A metro power supply system grounding operation visual simulation training system and method thereof

Abstract

This invention relates to the field of power supply system simulation training technology, and discloses a visual simulation training system and method for grounding operation in a subway power supply system. The system includes a scenario management module, an equipment status management module, an operation acquisition module, a parameter simulation module, a visual interaction module, an error analysis module, and an operation evaluation module. By establishing a grounding operation training scenario for a subway power supply system, constructing a grounding equipment status model, collecting operational behaviors and generating operation event sequences, determining the grounding loop status based on equipment status data and operation event sequences, and generating grounding parameter data corresponding to grounding resistance parameters, rail potential parameters, and stray current parameters, this invention enables trainees to complete grounding operation training in a virtual environment by establishing a subway power supply system grounding operation training scenario and generating a visual simulation interface based on equipment status data. This reduces the safety risks present in real equipment training.

Description

Technical Field

[0001] This invention relates to the field of power supply system simulation training technology, and in particular to a visual simulation training system and method for grounding operation of a subway power supply system. Background Technology

[0002] With the continuous development of urban rail transit systems, subway power supply systems have become an important component in ensuring the power supply for train operation and station equipment. To ensure operational safety during the inspection and maintenance of power supply equipment, maintenance personnel need to complete grounding operations such as operating grounding switches, installing grounding wires, and confirming grounding status according to prescribed procedures. Therefore, corresponding grounding operation training is necessary.

[0003] In existing technologies, training on grounding operations for subway power supply systems mainly employs on-site practical training and theoretical instruction. On-site practical training typically utilizes real power supply equipment, with trainees performing grounding operations according to operating procedures. Theoretical instruction, on the other hand, is conducted using textbooks, drawings, video materials, or simple simulation software.

[0004] However, in the process of realizing the technical solution of this application, the inventors of this application discovered that the grounding operation training in the prior art mainly relies on on-site practical training with real power supply equipment. The trainees need to enter the actual working environment and operate equipment such as grounding switches and grounding wires, which leads to the operation risk in the real power supply equipment environment during the training process, thus resulting in insufficient safety of grounding operation training. Summary of the Invention

[0005] To overcome the above shortcomings, this invention provides a visual simulation training system and method for grounding operation of subway power supply system, aiming to improve the existing technology's lack of a visual simulation mechanism based on equipment status data, which results in insufficient safety in grounding operation training.

[0006] In a first aspect, the present invention provides the following technical solution: a visual simulation training system for grounding operation of a subway power supply system, comprising: The scenario management module is used to create training scenarios for grounding operations of the subway power supply system and generate training scenario data. The equipment status management module, connected to the scenario management module, is used to construct a grounding equipment status model based on the training scenario data and generate equipment status data. An operation acquisition module, connected to the device status management module, is used to collect the operational behaviors of the training subjects and generate an operation event sequence; The parameter simulation module is connected to the equipment status management module and the operation acquisition module. It is used to determine the current grounding loop status based on the equipment status data, update the current grounding loop status based on the operation event sequence, and generate grounding parameter data corresponding to grounding resistance parameters, rail potential parameters and stray current parameters based on the updated grounding loop status. A visualization interaction module, connected to the parameter simulation module, is used to generate a visualization simulation interface based on the grounding parameter data and the device status data, and output interactive operation data to the operation acquisition module. An error analysis module, connected to the operation acquisition module, the equipment status management module, and the parameter simulation module, is used to generate error feedback information based on the operation event sequence, the equipment status data, and the grounding parameter data. An operation evaluation module, connected to the error analysis module, is used to generate operation evaluation results based on the operation event sequence, the grounding parameter data, and the error feedback information.

[0007] Preferably, the scenario management module generates training scenario data based on the grounding operation scenario type, specifically including: Retrieve the device layout data corresponding to the grounding operation scenario type; Retrieve the corresponding standard operating procedure data based on the equipment layout data; Retrieve the corresponding parameter constraint data according to the standard operating procedure data; Training scenario data is generated based on the equipment layout data, standard operating procedure data, and parameter constraint data.

[0008] Preferably, the device status management module generates device status data based on training scenario data, specifically including: Establish the corresponding equipment operation status for each grounding device; Establish the equipment interlock status corresponding to each grounding device; Establish the equipment association relationships between various grounding devices; Equipment status data is generated based on the equipment's operational status, interlocking status, and associated relationships.

[0009] Preferably, the operation acquisition module generates an operation event sequence based on the training subject's operation behavior, specifically including: Identify the target device corresponding to the device operation command; Generate operation events based on the target device and the corresponding operation results; Multiple operation events are arranged in chronological order to generate an operation event sequence.

[0010] Preferably, the parameter simulation module determines the current grounding loop state based on the device status data, specifically including: Identify the status of the grounding switch in the equipment status data; Identify the status of the grounding wire in the device status data; Identify the status of the grounding resistor cabinet in the equipment status data; Identify the status of the rail return device in the equipment status data; The current grounding circuit status is determined based on the status of the grounding switch, grounding conductor, grounding resistor cabinet, and rail return device.

[0011] Preferably, the parameter simulation module generates grounding parameter data based on the sequence of operational events, specifically including: Update the current grounding loop state according to the sequence of operation events; Generate grounding resistance parameters based on the updated grounding loop status; The rail potential parameters are generated based on the grounding resistance parameters. Stray current parameters are generated based on the rail potential parameters; grounding parameter data is generated based on the grounding resistance parameters, rail potential parameters, and stray current parameters.

[0012] Preferably, the visualization interaction module generates a visualization simulation interface based on grounding parameter data and device status data, specifically including: Extract grounding resistance parameters, rail potential parameters, and stray current parameters; Parameter variation curves are generated based on grounding resistance parameters, rail potential parameters, and stray current parameters; Generate parameter monitoring screens based on parameter change curves; A visual simulation interface is generated based on the equipment status display screen and parameter monitoring screen.

[0013] Preferably, the error analysis module generates error feedback information based on the operation event sequence, device status data, and grounding parameter data, specifically including: Determine the equipment interlocking conditions corresponding to the current grounding loop status; Determine whether the operation event meets the corresponding equipment interlocking conditions; Identify operation events that do not meet the equipment interlocking conditions; generate error feedback information based on the identification results.

[0014] Preferably, the operation evaluation module generates operation evaluation results based on the operation event sequence, grounding parameter data, and error feedback information, specifically including: Determine the completion status of operations corresponding to the sequence of operation events; Identify the abnormal conditions corresponding to the grounding parameter data; An operation evaluation result is generated based on the operation completion status, parameter anomalies, and error feedback information.

[0015] Secondly, the present invention provides the following technical solution: a visual simulation training method for grounding operation of a subway power supply system, comprising the following steps: S1. Establish a training scenario for grounding operation of the subway power supply system and generate training scenario data; S2. Construct a grounding device status model based on the training scenario data, and generate device status data; S3. Collect the operational behaviors of the trainees and generate a sequence of operational events; S4. Determine the current grounding loop status based on the equipment status data, update the current grounding loop status based on the operation event sequence, and generate grounding parameter data corresponding to grounding resistance parameters, rail potential parameters, and stray current parameters based on the updated grounding loop status. S5. Generate a visual simulation interface based on the grounding parameter data and the equipment status data; S6. Generate error feedback information based on the operation event sequence, the device status data, and the grounding parameter data; S7. Generate an operation evaluation result based on the operation event sequence, the grounding parameter data, and the error feedback information.

[0016] The present invention has the following beneficial effects: 1. This invention establishes a training scenario for grounding operation of a subway power supply system and generates a visual simulation interface based on equipment status data, enabling trainees to complete grounding operation training in a virtual environment, thereby reducing the safety risks present in real equipment training.

[0017] 2. This invention determines the grounding loop status based on equipment status data and operation event sequences, and generates grounding resistance parameters, rail potential parameters, and stray current parameters, enabling synchronous display of grounding equipment status changes and parameter changes, thereby improving the realism of grounding operation simulation.

[0018] 3. This invention generates error feedback information and operation evaluation results based on the sequence of operation events, equipment status data, and grounding parameter data, enabling abnormal operations to be identified and fed back in a timely manner, thereby improving the pertinence of the grounding operation training process. Attached Figure Description

[0019] Figure 1 This is a system architecture diagram of a visual simulation training system for grounding operation of a subway power supply system proposed in this invention; Figure 2This is a flowchart illustrating the construction of a grounding device state model proposed in this invention. Figure 3 This is a simulation flowchart of grounding parameters proposed in this invention; Figure 4 This invention provides a flowchart for error analysis. Figure 5 This invention provides an operational evaluation flowchart. Figure 6 This is a flowchart illustrating the overall process of a visual simulation training method for grounding operation of a subway power supply system proposed in this invention. Figure 7 This is a diagram of the simulation system interface proposed in this invention; Figure 8 This is a diagram of the interactive interface of the simulation system proposed in this invention; Figure 9 This is a diagram illustrating the software simulation training proposed in this invention. Detailed Implementation

[0020] The technical solutions in 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.

[0021] Example 1: Refer to Figure 1 In the first embodiment of the present invention, the present invention provides a visual simulation training system for grounding operation of a subway power supply system, comprising: The scenario management module is used to create training scenarios for grounding operations of the subway power supply system and generate training scenario data. Preferably, in the scenario management module, the steps for establishing a subway power supply system grounding operation training scenario include: Retrieve the corresponding equipment layout data based on the grounding operation scenario type; Retrieve the corresponding standard operating procedure data based on the equipment layout data; Retrieve the corresponding parameter constraint data based on the standard operating procedure data; Training scenario data is generated based on equipment layout data, standard operating procedure data, and parameter constraint data.

[0022] Specifically, the scenario management module pre-establishes a scenario resource database, which stores equipment layout data, standard operation procedure data, and parameter constraint data corresponding to multiple grounding operation scenarios.

[0023] Among them, the equipment layout data is used to describe the positional and connection relationships of grounding equipment in the training scenario. The equipment layout data includes at least the location data of grounding switch, grounding resistor cabinet, rail return current device, and grounding conductor installation location data; the standard operation procedure data is used to describe the operation sequence relationship of each grounding device; and the parameter constraint data is used to describe the constraint range corresponding to the grounding resistance parameter, rail potential parameter, and stray current parameter.

[0024] The scene management module first receives a scene selection instruction and determines the grounding operation scene type based on the instruction. Then, it reads the corresponding device layout data from the scene resource database based on the grounding operation scene type and generates a scene device set based on the device layout data. The scene device set can be represented as: ; in, Represents a set of scene devices; Indicates the first One grounding device; This indicates the number of devices in the scene.

[0025] After acquiring the device layout data, the scene management module reads the corresponding standard operation procedure data based on the device layout data. The standard operation procedure data is used to record the operation sequence relationship and the preceding and following operation constraints for each grounded device. Subsequently, the corresponding parameter constraint data is read based on the standard operation procedure data, so that the device layout information, operation procedure information, and parameter constraint information corresponding to the current scene are combined into unified scene configuration data.

[0026] After loading the equipment layout data, standard operating procedure data, and parameter constraint data, the scenario management module performs correlation mapping on the above data to generate training scenario data. The training scenario data can be represented as: ; in, This represents training scenario data; This represents equipment layout data; This represents standard operating procedure data; This represents parameter constraint data.

[0027] In a specific implementation process, grounding operation scenarios include traction substation grounding operation scenarios, step-down substation grounding operation scenarios, trackside grounding operation scenarios, and fault grounding operation scenarios. For different grounding operation scenarios, the scenario management module loads the corresponding equipment layout data and parameter constraint data.

[0028] For example, in the grounding operation scenario of traction substation, the equipment layout data includes the positional and connection relationships between grounding switches, grounding resistor cabinets, and rail return devices; in the railside grounding operation scenario, the equipment layout data includes information such as the installation position of grounding conductors, rail positions, and grounding point positions.

[0029] The generated training scenario data is sent to the equipment status management module for subsequent grounding equipment status model construction and grounding loop status simulation calculation.

[0030] By establishing the correspondence between equipment layout data, standard operating procedure data, and parameter constraint data, and generating training scenario data, the equipment configuration, operating procedure, and parameter constraint conditions corresponding to different grounding operation scenarios can be uniformly loaded, providing basic data for subsequent equipment status management, grounding parameter simulation, and error analysis.

[0031] Reference Figure 2 Furthermore, the equipment status management module is connected to the scenario management module to build a grounding equipment status model based on training scenario data and generate equipment status data. Preferably, in the equipment status management module, the steps for generating equipment status data include: Establish the corresponding equipment operation status for each grounding device; Establish the equipment interlock status corresponding to each grounding device; Establish the equipment association relationships between various grounding devices; Equipment status data is generated based on the equipment's operational status, interlock status, and associated relationships.

[0032] Specifically, the equipment status management module receives training scenario data from the scenario management module and determines the composition of grounding equipment in the current scenario based on the equipment layout data contained in the training scenario data. Grounding equipment includes at least a grounding switch, grounding conductor, grounding resistor cabinet, and rail return current device. For each grounding device, the equipment status management module establishes a corresponding equipment action status to describe the current operating state of the equipment.

[0033] Among them, the operating status of the grounding switch includes open and closed; the operating status of the grounding conductor includes uninstalled and installed; the operating status of the grounding resistor cabinet includes disconnected and connected; and the operating status of the rail return device includes normal return and grounded return.

[0034] After establishing the device action status, the device status management module further establishes the device interlock status corresponding to each grounding device. The device interlock status describes whether the current device meets the conditions for executing the next operation. The establishment process of the device interlock status is based on the standard operation procedure data and parameter constraint data in the training scenario data. For any grounding device, its device interlock status can be represented as: ; in, Indicates the first The interlock status of the equipment corresponding to each grounding device; Indicates the first Interlocking conditions; Indicates the number of interlocking conditions.

[0035] The equipment status management module establishes equipment associations between grounding devices based on equipment layout data. These equipment associations describe the connection relationships and status impact relationships between grounding devices.

[0036] For example, a change in the state of a grounding switch will affect the conduction state of the grounding circuit; a change in the state of a grounding conductor will affect the grounding state of the grounding circuit; a change in the engagement state of a grounding resistor cabinet will affect the equivalent grounding resistance in the grounding circuit; and a change in the state of a rail return current device will affect the rail return current path. The equipment status management module establishes an equipment association matrix based on the above relationships: ;in, Represents the device association matrix; Indicates the first The device and the first Parameters relating to devices; when there is a relationship between two devices... Retrieve the association identifier value; when there is no association relationship between the two devices. Take the non-associated identifier value.

[0037] After establishing equipment operation status, equipment interlock status, and equipment association relationships, the equipment status management module integrates and processes this information to generate equipment status data. Equipment status data can be represented as follows: ; in, Indicates time Corresponding device status data; Represents a set of device action states; Represents the set of equipment interlocking states; This represents a set of device associations.

[0038] The generated equipment status data is sent to the parameter simulation module for subsequent grounding loop status determination and grounding parameter calculation, and also to the error analysis module for equipment interlocking condition analysis and erroneous operation identification.

[0039] By establishing equipment operation status, equipment interlock status, and equipment association relationships, and generating unified equipment status data, the operating status of grounding equipment, interlock constraints, and relationships between equipment can be uniformly described, providing basic data for subsequent grounding loop status updates, grounding parameter simulation, and error feedback analysis.

[0040] Furthermore, the operation acquisition module is connected to the equipment status management module to collect the operational behaviors of the training subjects and generate operation event sequences; Preferably, in the operation acquisition module, the steps for generating the operation event sequence include: Identify the target device corresponding to the device operation command; Generate operation events based on the target device and the corresponding operation results; Multiple operation events are arranged in chronological order to generate an operation event sequence.

[0041] Specifically, the operation acquisition module is connected to the visualization interaction module to receive equipment operation commands issued by the trainees in the visualization simulation interface. These commands include commands for opening and closing grounding switches, installing and removing grounding conductors, engaging and disengaging grounding resistor cabinets, and deactivating grounding resistor cabinets. The operation acquisition module first parses the received commands, determines the corresponding target equipment based on the equipment identification information in the commands, and obtains the current equipment status data of the target equipment from the equipment status management module.

[0042] Subsequently, the operation acquisition module generates corresponding operation results based on the device operation instructions and the current status of the target device. These results include both successful and failed operation outcomes. A successful operation outcome is generated when the target device meets the current interlocking conditions; a failed operation outcome is generated when the target device does not meet the current interlocking conditions.

[0043] After completing target device identification and operation result determination, the operation acquisition module generates a corresponding operation event. A single operation event can be represented as: ; in, Indicates the first One operation event; Indicates the target device identifier; Indicates the operation type; Indicates the result of the operation.

[0044] After generating multiple operation events, the operation acquisition module sorts and processes them according to the order in which they were generated, and establishes an operation event sequence. The operation event sequence can be represented as: ; in, Represents a sequence of operation events; Indicates the first One operation event; This indicates the total number of operation events.

[0045] In a specific implementation process, when the trainee performs a grounding switch opening operation, the operation acquisition module generates a corresponding grounding switch operation event. When the trainee subsequently performs a grounding conductor installation operation, the operation acquisition module continues to generate a corresponding grounding conductor operation event, and records them sequentially into the operation event sequence according to the order of generation. All operations in the same training process are recorded using a unified operation event structure, thereby ensuring that the subsequent parameter simulation module can gradually update the grounding loop status based on the operation event sequence.

[0046] The generated sequence of operation events is sent to the parameter simulation module for updating the grounding loop status and calculating grounding parameters; it is also sent to the error analysis module for matching equipment interlocking conditions and identifying abnormal operations.

[0047] By uniformly collecting the equipment operation behavior of the trainees and generating a sequence of operation events arranged in chronological order, the grounding operation process can form a continuous operation record, providing basic operation data for subsequent dynamic updates of grounding loop status, grounding parameter simulation, and error feedback analysis.

[0048] Reference Figure 3 Furthermore, the parameter simulation module is connected to the equipment status management module and the operation acquisition module. It is used to determine the current grounding loop status based on the equipment status data, update the current grounding loop status based on the operation event sequence, and generate grounding parameter data corresponding to grounding resistance parameters, rail potential parameters, and stray current parameters based on the updated grounding loop status. Preferably, in the parameter simulation module, the step of determining the current grounding loop status based on the equipment status data includes: Identify the status of the grounding switch in the equipment status data; Identify the status of the grounding wire in the device status data; Identify the status of the grounding resistor cabinet in the equipment status data; Identify the status of the rail return device in the equipment status data; The current grounding circuit status is determined based on the status of the grounding switch, grounding conductor, grounding resistor cabinet, and rail return device.

[0049] Preferably, in the parameter simulation module, the steps for generating grounding parameter data corresponding to grounding resistance parameters, rail potential parameters, and stray current parameters include: Update the current grounding loop state according to the sequence of operation events; Generate grounding resistance parameters based on the updated grounding loop status; Generate rail potential parameters based on grounding resistance parameters; Stray current parameters are generated based on rail potential parameters; Grounding parameter data is generated based on grounding resistance parameters, rail potential parameters, and stray current parameters.

[0050] Specifically, the parameter simulation module receives equipment status data sent by the equipment status management module, and establishes the current grounding loop model based on the status of the grounding switch, grounding conductor, grounding resistor cabinet, and rail return device in the equipment status data.

[0051] Among them, the status of the grounding switch represents the on / off state of the circuit, the status of the grounding conductor represents the connection state of the grounding point, the status of the grounding resistor cabinet represents the connection state of the grounding branch, and the status of the rail return current device represents the return current path state. The parameter simulation module determines the current grounding circuit status based on the above status information, which can be expressed as: ; in, Indicates time The corresponding grounding loop status; Indicates the status of the grounding switch; Indicates the status of the grounding conductor; Indicates the status of the grounding resistor cabinet; This indicates the status of the rail return device.

[0052] After determining the current grounding loop state, the parameter simulation module receives the sequence of operation events sent by the operation acquisition module and updates the grounding loop state item by item according to the order in which the operation events occur. When a grounding switch operation event exists in the operation event sequence, the grounding switch state is updated accordingly; when a grounding conductor operation event exists, the grounding conductor state is updated accordingly; when a grounding resistor cabinet operation event exists, the grounding resistor cabinet state is updated accordingly. After each state update, the corresponding grounding loop state is regenerated to reflect the grounding loop connection status under the current operating conditions.

[0053] After completing the grounding loop status update, the parameter simulation module generates grounding resistance parameters based on the operational status of each grounding branch in the grounding loop. The grounding resistance parameters can be expressed as: ; in, Indicates the grounding resistance parameter; Indicates the first The branch resistance corresponding to each grounding branch; Indicates the first The connection status of each grounding branch; when the branch is connected. Take the operational status value; when the branch is not operational, Take the value of the uninvested state; This indicates the number of grounding branches involved in the calculation.

[0054] After obtaining the grounding resistance parameters, the parameter simulation module generates rail potential parameters based on the rail return current state and the grounding discharge current state. The rail potential parameters can be expressed as: ; in, Indicates the rail potential parameter; Indicates the return current of the rail; Indicates the resistance of the rail return channel; Indicates the grounding discharge current; This represents the grounding resistance parameter.

[0055] Subsequently, the parameter simulation module generates stray current parameters based on the rail potential parameters. The stray current parameters can be expressed as: ; in, Indicates stray current parameters; Indicates the rail potential parameter; Indicates the insulation resistance of the rail to ground; This indicates the resistance of the external leakage path.

[0056] After calculating the grounding resistance parameters, rail potential parameters, and stray current parameters, the parameter simulation module combines the above parameters to generate grounding parameter data and sends it to the visualization interaction module for parameter display. At the same time, it sends it to the error analysis module for equipment interlocking condition analysis and abnormal operation identification.

[0057] By establishing the grounding loop status based on equipment status data and dynamically updating the grounding loop status in conjunction with the operation event sequence, the process of grounding equipment status change can be mapped in real time to the changes in grounding resistance parameters, rail potential parameters, and stray current parameters, providing a corresponding parameter basis for grounding operation simulation, parameter display, and error analysis.

[0058] Reference Figure 7 and Figure 8 Furthermore, the visualization interaction module is connected to the parameter simulation module and is used to generate a visualization simulation interface based on grounding parameter data and equipment status data, and output interactive operation data to the operation acquisition module. Preferably, in the visualization interaction module, the steps for generating a visualization simulation interface based on grounding parameter data and device status data include: Extract grounding resistance parameters, rail potential parameters, and stray current parameters; Parameter variation curves are generated based on grounding resistance parameters, rail potential parameters, and stray current parameters; Generate parameter monitoring screens based on parameter change curves; A visual simulation interface is generated based on the equipment status display screen and parameter monitoring screen.

[0059] Specifically, the visualization interaction module receives grounding parameter data sent by the parameter simulation module and equipment status data sent by the equipment status management module, and builds a visualization simulation interface based on the grounding parameter data and equipment status data.

[0060] The equipment status data is used to drive the update of the equipment status display screens corresponding to the grounding switch, grounding conductor, grounding resistor cabinet, and rail return current device; the grounding parameter data is used to drive the update of the parameter monitoring screen. The equipment status display screen records the status information of each grounding device in the current scene. When the equipment status changes, the display status of the corresponding device is updated synchronously, thereby reflecting the current grounding loop status change process.

[0061] After receiving the grounding parameter data, the visualization interaction module extracts the grounding resistance parameters, rail potential parameters, and stray current parameters contained within, and establishes the corresponding parameter sequences according to the sampling time order. Taking the grounding resistance parameter as an example, its parameter sequence can be represented as follows: ; in, Represents a sequence of grounding resistance parameters; Indicates the first Grounding resistance parameters corresponding to each sampling time; Indicates the number of times the parameter is sampled.

[0062] Similarly, rail potential parameter sequences and stray current parameter sequences can be established. The visualization and interaction module generates corresponding parameter change curves based on historical and current parameter values ​​in each parameter sequence, and generates a parameter monitoring screen based on the parameter change curves. The parameter monitoring screen includes at least the grounding resistance change curve, rail potential change curve, and stray current change curve to reflect the changes in each parameter during the grounding operation.

[0063] After generating the equipment status display screen and parameter monitoring screen, the visualization interaction module combines them to form a unified visualization simulation interface. This interface simultaneously receives interactive operation data input by the trainees, including equipment selection, grounding switch operation, grounding conductor operation, and grounding resistor cabinet operation. The visualization interaction module sends this data to the operation acquisition module to generate a corresponding sequence of operation events, thus creating a cyclical interactive process between equipment status updates, parameter simulation calculations, and interface refreshes.

[0064] In a specific implementation process, when the trainee performs the grounding switch opening operation, the grounding switch status in the equipment status display screen is updated synchronously; then the parameter simulation module recalculates the grounding parameter data and sends the updated grounding resistance parameters, rail potential parameters, and stray current parameters to the visualization interaction module; the visualization interaction module refreshes the parameter change curve and parameter monitoring screen based on the updated parameter data, so that the equipment status change process and the parameter change process are displayed synchronously.

[0065] By generating equipment status display screens based on equipment status data and parameter monitoring screens based on grounding parameter data, the process of grounding equipment status changes and grounding parameter changes can be displayed in the same visual simulation interface, providing a visual data foundation for trainees to observe equipment status changes and parameter changes during grounding operations.

[0066] Reference Figure 4 Furthermore, the error analysis module is connected to the operation acquisition module, the equipment status management module, and the parameter simulation module, and is used to generate error feedback information based on the operation event sequence, equipment status data, and grounding parameter data. Preferably, in the error analysis module, the steps for generating error feedback information include: Determine the equipment interlocking conditions corresponding to the current grounding loop status; Determine whether the operation event meets the corresponding equipment interlocking conditions; Identify operational events that do not meet the equipment interlocking conditions; Error feedback information is generated based on the recognition results.

[0067] Specifically, the error analysis module receives the operation event sequence sent by the operation acquisition module, the equipment status data sent by the equipment status management module, and the grounding parameter data sent by the parameter simulation module, and establishes corresponding equipment interlocking conditions based on the current grounding loop status. The equipment interlocking conditions describe the permitted and prohibited equipment operation ranges under the current grounding loop status.

[0068] For example, when the grounding switch is in the closed state, the grounding conductor installation operation does not meet the corresponding interlocking conditions; when the grounding conductor is in the installed state, the grounding switch closing operation does not meet the corresponding interlocking conditions. The error analysis module determines the current set of equipment interlocking conditions based on the equipment action status, equipment interlocking status, and equipment relationships in the equipment status data.

[0069] The set of equipment interlocking conditions can be represented as: ; in, Indicates time The corresponding set of equipment interlocking conditions; Indicates the first Equipment interlocking conditions; Indicates the number of interlocking conditions.

[0070] After determining the equipment interlocking conditions, the error analysis module reads each operation event from the operation event sequence and performs a matching analysis between each operation event and the current equipment interlocking conditions. For any given operation event, the matching result can be expressed as: ; in, Indicates the first Matching results for each operation event.

[0071] When the matching result indicates that the equipment interlocking conditions are met, the error analysis module determines the current operation event as a valid operation event. When the matching result indicates that the equipment interlocking conditions are not met, the error analysis module determines the current operation event as an abnormal operation event and further determines the cause of the abnormality by combining the corresponding equipment status data and grounding parameter data. The causes of the abnormality include situations such as equipment status not meeting requirements, incorrect equipment operation sequence, and abnormal grounding parameter status.

[0072] After identifying abnormal operation events, the error analysis module generates corresponding error feedback information. This feedback information includes at least the faulty device identifier, the type of erroneous operation, and the cause of the error. For multiple abnormal operation events during the same training process, the error analysis module establishes an error feedback set according to the order in which the events occurred, and sends the corresponding error feedback information to the visualization interaction module for display, while simultaneously sending it to the operation evaluation module for subsequent operation evaluation result generation.

[0073] In a specific implementation process, when a grounding conductor installation operation event occurs in the operation event sequence, and the current equipment status data indicates that the grounding switch is still in the closed state, the error analysis module determines that the operation event does not meet the interlocking requirements based on the current equipment interlocking conditions and generates corresponding error feedback information. When the grounding conductor has been installed and the reinstallation operation is performed again, the error analysis module also identifies the corresponding abnormal operation event based on the equipment status data and generates error feedback information.

[0074] By establishing equipment interlocking conditions based on operation event sequences, equipment status data, and grounding parameter data, and identifying operation events that do not meet the equipment interlocking conditions, abnormal operations generated during grounding operations can be identified and reported in a timely manner, providing basic data for subsequent operation evaluation and training process analysis.

[0075] Reference Figure 5 Furthermore, the operation evaluation module is connected to the error analysis module and is used to generate operation evaluation results based on the operation event sequence, grounding parameter data and error feedback information. Preferably, in the operation evaluation module, the steps for generating operation evaluation results include: Determine the completion status of operations corresponding to the sequence of operation events; Identify the abnormal conditions corresponding to the grounding parameter data; An operation evaluation result is generated based on the operation completion status, parameter anomalies, and error feedback information.

[0076] Specifically, the operation evaluation module receives the operation event sequence sent by the operation acquisition module, the grounding parameter data sent by the parameter simulation module, and the error feedback information sent by the error analysis module, and evaluates and analyzes the operation of the trainees during the current training process.

[0077] First, the operation evaluation module matches and analyzes the sequence of operation events based on the standard operating procedure data corresponding to the current training scenario to determine the operation completion status. The operation completion status characterizes whether the trainee has completed the corresponding grounded operation task according to the preset operating procedure. The operation evaluation module sequentially judges whether each operation event in the sequence corresponds to the target operation step in the standard operating procedure, and counts the number of completed operation steps and the number of operation steps that should be completed.

[0078] The completion status of the operation can be represented as follows: ; in, Indicates the completion status of the operation; Indicates the number of operation steps that have been completed; This indicates the total number of operation steps corresponding to the standard operating procedure.

[0079] After confirming the completion of the operation, the operation evaluation module further analyzes the grounding resistance, rail potential, and stray current parameters in the grounding parameter data, and determines parameter anomalies based on the parameter constraint data corresponding to the current training scenario. When a grounding parameter exceeds its corresponding constraint range, an anomaly is identified; when a grounding parameter is within its constraint range, no anomalies are identified. For multiple grounding parameters, the operation evaluation module performs anomaly detection separately and counts the number of anomalous parameters.

[0080] Subsequently, the operation evaluation module reads the error feedback information generated by the error analysis module and counts the number of abnormal operation events, the types of abnormal operations, and the corresponding error causes that occurred during the training process. For each error feedback message, a corresponding error record is created to facilitate the subsequent formation of a complete operation evaluation result.

[0081] After completing the analysis of operation completion status, parameter anomaly analysis, and error feedback statistics, the operation evaluation module summarizes the above results and generates the operation evaluation result. The operation evaluation result includes at least operation completion information, parameter anomaly information, and error feedback statistics. The operation evaluation result can be represented as: ; in, Indicates the operational evaluation results; This indicates the status of the operation. This indicates information about abnormal parameter conditions; This indicates error feedback statistics.

[0082] In a specific implementation process, when the trainees complete the operations of opening the grounding switch, hanging the grounding conductor, and putting the grounding resistor cabinet into operation in sequence according to the standard operating procedures, the operation evaluation module generates operation completion information based on the corresponding operation events. If abnormal operations such as repeated hanging of the grounding conductor or accidental closing of the grounding switch occur during the training, corresponding error feedback statistics are generated. If the grounding parameter data shows that the rail potential exceeds the parameter constraint range, corresponding parameter abnormality information is generated and included in the operation evaluation results.

[0083] By determining the completion status of operations based on the sequence of operational events, identifying abnormal parameter conditions based on grounding parameter data, and generating operational evaluation results by combining error feedback information, the grounding operation process of the trainees can form corresponding evaluation records, providing basic data for training result analysis and subsequent training process management.

[0084] Example 2: Refer to Figure 6 and Figure 9In a second embodiment of the present invention, the present invention provides a visual simulation training method for grounding operation of a subway power supply system, comprising the following steps: S1. Establish a training scenario for grounding operation of the subway power supply system and generate training scenario data; S2. Construct a grounding equipment status model based on training scenario data and generate equipment status data; S3. Collect the operational behaviors of the trainees and generate a sequence of operational events; S4. Determine the current grounding loop status based on the equipment status data, update the current grounding loop status according to the operation event sequence, and generate grounding parameter data corresponding to grounding resistance parameters, rail potential parameters, and stray current parameters based on the updated grounding loop status. S5. Generate a visual simulation interface based on grounding parameter data and equipment status data; S6. Generate error feedback information based on the operation event sequence, equipment status data, and grounding parameter data; S7. Generate operation evaluation results based on the operation event sequence, grounding parameter data, and error feedback information.

[0085] Specifically, in step S1, the system loads the corresponding equipment layout data, standard operating procedure data, and parameter constraint data according to the grounding operation scenario type corresponding to the training task, and generates the training scenario data corresponding to the current training process. The training scenario data is used to describe the composition structure of the grounding equipment, the equipment connection relationships, and the corresponding operating procedure rules.

[0086] In step S2, the system identifies grounding devices such as grounding switches, grounding wires, grounding resistor cabinets, and rail return devices in the scenario based on the training scenario data, and establishes the corresponding device action status, device interlock status, and device association relationship, and then generates device status data.

[0087] In step S3, the system receives the device operation behavior of the training subject in the visual simulation interface and identifies the corresponding target device and operation type. For each device operation, a corresponding operation event is generated, and an operation event sequence is established according to the order in which the operation occurs.

[0088] In step S4, the system determines the current grounding loop status based on the equipment status data and updates the grounding loop status step by step according to the operation events in the operation event sequence. After completing the grounding loop status update, the corresponding grounding resistance parameters, rail potential parameters, and stray current parameters are generated, forming grounding parameter data.

[0089] In step S5, the system generates an equipment status display screen based on the equipment status data and a parameter monitoring screen based on the grounding parameter data. The system then combines the equipment status display screen and the parameter monitoring screen to form a visual simulation interface. Trainees operate the equipment through this interface while simultaneously observing the changes in both the equipment status and the grounding parameters.

[0090] In step S6, the system determines the equipment interlocking conditions corresponding to the current grounding loop state based on the operation event sequence, equipment status data, and grounding parameter data, and performs matching analysis between each operation event and the corresponding equipment interlocking conditions. When there is an operation event that does not meet the equipment interlocking conditions, corresponding error feedback information is generated.

[0091] In step S7, the system determines the operation completion status corresponding to the current training process based on the operation event sequence, identifies parameter anomalies based on grounding parameter data, and generates an operation evaluation result by combining error feedback information. The operation evaluation result includes at least the operation completion status, parameter anomalies, and error feedback statistics, used to record the grounding operation process corresponding to the training subject.

[0092] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A visual simulation training system for grounding operation of a subway power supply system, characterized in that, include: The scenario management module is used to create training scenarios for grounding operations of the subway power supply system and generate training scenario data. The equipment status management module, connected to the scenario management module, is used to construct a grounding equipment status model based on the training scenario data and generate equipment status data. An operation acquisition module, connected to the device status management module, is used to collect the operational behaviors of the training subjects and generate an operation event sequence; The parameter simulation module is connected to the equipment status management module and the operation acquisition module. It is used to determine the current grounding loop status based on the equipment status data, update the current grounding loop status based on the operation event sequence, and generate grounding parameter data corresponding to grounding resistance parameters, rail potential parameters and stray current parameters based on the updated grounding loop status. A visualization interaction module, connected to the parameter simulation module, is used to generate a visualization simulation interface based on the grounding parameter data and the device status data, and output interactive operation data to the operation acquisition module. An error analysis module, connected to the operation acquisition module, the equipment status management module, and the parameter simulation module, is used to generate error feedback information based on the operation event sequence, the equipment status data, and the grounding parameter data. An operation evaluation module, connected to the error analysis module, is used to generate operation evaluation results based on the operation event sequence, the grounding parameter data, and the error feedback information.

2. The visual simulation training system for grounding operation of a subway power supply system according to claim 1, characterized in that, The scenario management module generates training scenario data based on the grounding operation scenario type, specifically including: Retrieve the device layout data corresponding to the grounding operation scenario type; Retrieve the corresponding standard operating procedure data based on the equipment layout data; Retrieve the corresponding parameter constraint data according to the standard operating procedure data; Training scenario data is generated based on the equipment layout data, standard operating procedure data, and parameter constraint data.

3. The visual simulation training system for grounding operation of a subway power supply system according to claim 1, characterized in that, The device status management module generates device status data based on training scenario data, specifically including: Establish the corresponding equipment operation status for each grounding device; Establish the equipment interlock status corresponding to each grounding device; Establish the equipment association relationships between various grounding devices; Equipment status data is generated based on the equipment's operational status, interlocking status, and associated relationships.

4. The visual simulation training system for grounding operation of a subway power supply system according to claim 1, characterized in that, The operation acquisition module generates an operation event sequence based on the training subject's operational behavior, specifically including: Identify the target device corresponding to the device operation command; Generate operation events based on the target device and the corresponding operation results; Multiple operation events are arranged in chronological order to generate an operation event sequence.

5. The visual simulation training system for grounding operation of a subway power supply system according to claim 1, characterized in that, The parameter simulation module determines the current grounding loop status based on the device status data, specifically including: Identify the status of the grounding switch in the equipment status data; Identify the status of the grounding wire in the device status data; Identify the status of the grounding resistor cabinet in the equipment status data; Identify the status of the rail return device in the equipment status data; The current grounding circuit status is determined based on the status of the grounding switch, grounding conductor, grounding resistor cabinet, and rail return device.

6. The visual simulation training system for grounding operation of a subway power supply system according to claim 5, characterized in that, The parameter simulation module generates grounding parameter data based on the sequence of operational events, specifically including: Update the current grounding loop state according to the sequence of operation events; Generate grounding resistance parameters based on the updated grounding loop status; The rail potential parameters are generated based on the grounding resistance parameters. Stray current parameters are generated based on the rail potential parameters; grounding parameter data is generated based on the grounding resistance parameters, rail potential parameters, and stray current parameters.

7. The visual simulation training system for grounding operation of a subway power supply system according to claim 1, characterized in that, The visualization interaction module generates a visualization simulation interface based on grounding parameter data and device status data, specifically including: Extract grounding resistance parameters, rail potential parameters, and stray current parameters; Parameter variation curves are generated based on grounding resistance parameters, rail potential parameters, and stray current parameters; Generate parameter monitoring screens based on parameter change curves; A visual simulation interface is generated based on the equipment status display screen and parameter monitoring screen.

8. The visual simulation training system for grounding operation of a subway power supply system according to claim 1, characterized in that, The error analysis module generates error feedback information based on the operation event sequence, device status data, and grounding parameter data, specifically including: Determine the equipment interlocking conditions corresponding to the current grounding loop status; Determine whether the operation event meets the corresponding equipment interlocking conditions; Identify operation events that do not meet the equipment interlocking conditions; generate error feedback information based on the identification results.

9. A visual simulation training system for grounding operation of a subway power supply system according to claim 1, characterized in that, The operation evaluation module generates operation evaluation results based on the operation event sequence, grounding parameter data, and error feedback information, specifically including: Determine the completion status of operations corresponding to the sequence of operation events; Identify the abnormal conditions corresponding to the grounding parameter data; An operation evaluation result is generated based on the operation completion status, parameter anomalies, and error feedback information.

10. A visual simulation training method for grounding operation of a subway power supply system, characterized in that, The system, applied to the grounding operation visualization simulation training system for a subway power supply system according to any one of claims 1-9, includes the following steps: S1. Establish a training scenario for grounding operation of the subway power supply system and generate training scenario data; S2. Construct a grounding device status model based on the training scenario data, and generate device status data; S3. Collect the operational behaviors of the trainees and generate a sequence of operational events; S4. Determine the current grounding loop status based on the equipment status data, update the current grounding loop status based on the operation event sequence, and generate grounding parameter data corresponding to grounding resistance parameters, rail potential parameters, and stray current parameters based on the updated grounding loop status. S5. Generate a visual simulation interface based on the grounding parameter data and the equipment status data; S6. Generate error feedback information based on the operation event sequence, the device status data, and the grounding parameter data; S7. Generate an operation evaluation result based on the operation event sequence, the grounding parameter data, and the error feedback information.

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