Reactor control and protection system simulation debugging device and method

Abstract

The invention belongs to the field of nuclear power plant instrument control system debugging, and particularly relates to a reactor control and protection system simulation debugging device and method, and the device comprises a process system and equipment simulation model which is used for simulating the operation of a unit process system and equipment, and obtaining the dynamic operation parameters of the process and equipment; the simulation operation module is used for performing simulation operation according to a control instruction of the DCS cabinet, generating a simulation operation result and feeding back the simulation operation result to the DCS cabinet or the virtual DCS controller simulation model; and the IO interface device is used for transmitting a control instruction output by the DCS cabinet to the process system and the equipment simulation model and feeding back simulation operation results of the process system and the equipment simulation model to the DCS cabinet to form a control closed loop. According to the method, the reactor control and protection system can be debugged in advance in the debugging stage, control logic configuration errors and parameter setting errors are checked, the debugging risk of the reactor control and protection system is reduced, and the debugging period of the reactor control and protection system is shortened.

Description

Technical Field

[0001] This invention belongs to the field of nuclear power plant instrumentation and control system commissioning, specifically relating to a reactor control and protection system simulation commissioning device and method. Background Technology

[0002] As a crucial component of DCS application configuration design, the reactor control system's functional design and adaptability directly impact the safe operation and availability of nuclear power units. Due to the unique safety requirements of nuclear power plants, the closed-loop response, parameter optimization, and various major transient tests of the reactor control system (RRC) during the initial commissioning and power-up phase after criticality have always been technical challenges for the joint commissioning and startup of nuclear power plants both domestically and internationally. These are also the commissioning activities most prone to unexpected shutdowns and reactor stoppages.

[0003] Traditional commissioning methods prevent commissioning personnel from assessing the dynamic characteristics of the control system during associated operation, increasing the complexity of on-site commissioning. Traditional nuclear power plant commissioning and startup techniques require that pure logic testing or dynamic verification be conducted only after primary instrumentation is installed, control cables are terminated, and the unit has established steady-state or transient operating conditions with the working fluid. Directly activating equipment or testing under actual operating conditions increases the risk of equipment malfunction or unit operation events (unexpected shutdowns or activation of dedicated safety facilities) due to various potential hardware / software configuration design or thermal / hydraulic problems, posing significant risks to nuclear power plant commissioning and startup. Furthermore, the dynamic characteristics of the control system using traditional commissioning methods rely entirely on the actual power operation after fuel loading. Considering nuclear safety and grid operation, the window for testing operating condition disturbances and large transient operating condition responses after fuel loading is very limited. If the test results are barely acceptable, there is little opportunity for further testing and parameter optimization. A set of parameters that barely meets commissioning acceptance criteria may leave safety hazards for subsequent unit operation.

[0004] The commissioning phase of a nuclear power plant is an extremely important stage in the construction process. There is an urgent need to develop DCS simulation commissioning devices and methods to effectively improve the safety and quality of commissioning. Summary of the Invention

[0005] The purpose of this invention is to provide a simulation and debugging device and method for reactor control and protection systems, which can perform early debugging of reactor control and protection systems during the debugging phase, identify control logic configuration errors and parameter setting errors, reduce the debugging risks of reactor control and protection systems, and shorten the debugging period of reactor control and protection systems.

[0006] Technical solution to achieve the purpose of this invention: This invention provides a reactor control and protection system simulation and debugging device, the device comprising: a simulation model system, an I / O interface device, and a DCS cabinet; the simulation model system includes: a process system and an equipment simulation model; The process system and equipment simulation model is used to simulate the operation of the unit's process system and equipment, obtain dynamic process and equipment operating parameters; it is used to perform simulation calculations based on the control commands of the DCS cabinet, generate simulation calculation results, and feed them back to the DCS cabinet or virtual DCS controller simulation model. The IO interface device is used to transmit the control commands output by the DCS cabinet to the process system and equipment simulation model, and at the same time feed back the simulation calculation results of the process system and equipment simulation model to the DCS cabinet, forming a control closed loop.

[0007] Furthermore, the process system and equipment simulation model are connected to the IO interface device, and the DCS cabinet to be debugged is also connected to the IO interface device. The DCS operator station transmits action commands to the DCS cabinet to be debugged. The DCS cabinet processes and analyzes the action commands, generates control commands, and transmits the control commands to the process system and equipment simulation model. The process system and equipment simulation model performs corresponding simulation calculations based on the control commands and generates simulation results. The simulation results are fed back to the DCS cabinet to be debugged. The DCS cabinet generates operation status parameters based on the simulation results and transmits the operation status parameters to the DCS operator station. The DCS operator station monitors the operation status parameters.

[0008] Furthermore, the simulation model system also includes: a human-computer interaction testing module and a virtual DCS controller simulation model; The human-computer interaction testing module is used to issue action commands, control the virtual DCS controller simulation model to perform actions according to the action commands, and monitor the operation status parameters of the virtual DCS controller simulation model. The virtual DCS controller simulation model is used to generate control commands based on action commands, control the operation of the process system and equipment simulation model according to the control commands, monitor the simulation calculation results of the process system and equipment simulation model, and generate operation status parameters based on the simulation calculation results of the process system and equipment simulation model. The process system and equipment simulation model is used to simulate the operation of the unit's process system and equipment, obtain dynamic process and equipment operating parameters; it is used to perform simulation calculations based on the control instructions of the virtual DCS controller simulation model, generate simulation calculation results, and feed them back to the virtual DCS controller simulation model.

[0009] Furthermore, the human-machine interaction testing module is connected to the virtual DCS controller simulation model, and the process system and equipment simulation model are communicatively connected to the virtual DCS controller simulation model. The human-machine interaction testing module transmits action commands to the virtual DCS controller simulation model, which processes and analyzes the action commands, generates control commands, and transmits the control commands to the process system and equipment simulation model. The process system and equipment simulation model performs corresponding simulation calculations based on the control commands and generates simulation calculation results, which are then fed back to the virtual DCS controller simulation model. The virtual DCS controller simulation model generates operation status parameters based on the simulation calculation results and transmits the operation status parameters to the human-machine interaction testing module, which monitors the operation status parameters.

[0010] Furthermore, the simulation model system also includes: a virtual-real DCS control signal switching interface, which is used to switch the control commands of the DCS cabinet and the virtual DCS controller simulation model to the process system and equipment simulation model; the process system and equipment simulation model and the IO interface device are connected and communicate with each other through the virtual-real DCS control signal switching interface, and the process system and equipment simulation model and the virtual DCS controller simulation model are connected and communicate with each other through the virtual-real DCS control signal switching interface.

[0011] Furthermore, the human-machine interaction testing module includes: a DCS second-layer operation interface model and a system flowchart interface model; the DCS second-layer operation interface model is equipped with function operation buttons for the DCS human-machine interface, such as alarm function buttons, trend function buttons, flowchart function buttons, etc., for opening various related operation interfaces; the system flowchart interface model stores flowcharts of the process system and equipment, including the pipeline flow direction of the system and the operation panel of the equipment, for controlling the on / off and start / stop operations of various equipment.

[0012] Furthermore, the process system and equipment simulation models include: reactor core simulation model, primary loop thermal-hydraulic simulation model, main steam system thermal-hydraulic simulation model, main feedwater system thermal-hydraulic simulation model, chemical and volume control system thermal-hydraulic simulation model, steam bypass system thermal-hydraulic simulation model, deaerator thermal-hydraulic system, high-pressure feedwater heater thermal-hydraulic system, and low-pressure feedwater heater thermal-hydraulic system.

[0013] The present invention also provides a method for simulating and debugging a reactor control and protection system, the method comprising: Step 1: Establish connections between the various modules in the simulation model system; Step 2: Establish the connection between the simulation model system and the I / O interface device; Step 3: Establish the connection between the IO interface device and the DCS cabinet; Step 4: Perform DCS cabinet simulation and debugging; Step 5: Perform offline debugging of the DCS control logic without connecting to the DCS cabinet.

[0014] Further, step 4 includes: Step 4.1: Simulation Model of Process System and Equipment. Based on the actual commissioning requirements, the simulation model of the process system and equipment of the unit is used to obtain dynamic process and equipment operating parameters. Step 4.2: Switch the virtual and real DCS control signal switching interface to connect with the DCS cabinet to be debugged, so that the process system and equipment simulation model can communicate with the DCS cabinet to be debugged. Step 4.3: The DCS operator station generates action commands. These commands are processed and analyzed by the DCS cabinet to be debugged, generating control commands, which are then transmitted to the process system and equipment simulation model. The process system and equipment simulation model perform corresponding simulation calculations based on the control commands and generate simulation results, which are then fed back to the DCS cabinet to be debugged. The DCS cabinet to be debugged generates operation status parameters based on the simulation results and transmits them to the DCS operator station. The DCS operator station monitors the operation status parameters. If the operation status parameters are inconsistent with the control commands, it indicates that there is a problem with the control logic related to the control commands, and targeted troubleshooting is performed.

[0015] Further, step 5 includes: Step 5.1: Download the control logic configuration files of the reactor control system and reactor protection system into the virtual DCS controller simulation model; Step 5.2: Switch the virtual-real DCS control signal switching interface to connect with the virtual DCS controller simulation model, so that the process system and equipment simulation model are connected with the control logic of the reactor control system and reactor protection system to be debugged running in the virtual DCS controller simulation model; Step 5.3: The human-machine interaction test module generates action commands. These commands are processed and analyzed by the virtual DCS controller simulation model to generate control commands, which are then transmitted to the process system and equipment simulation models. The process system and equipment simulation models perform corresponding simulation calculations based on the control commands and generate simulation results, which are then fed back to the virtual DCS controller simulation model. The virtual DCS controller simulation model generates operation status parameters based on the simulation results and transmits them to the human-machine interaction test module. The human-machine interaction test module monitors the operation status parameters. If the operation status parameters are inconsistent with the control commands, it indicates a problem with the control logic related to the control commands, and targeted troubleshooting is performed.

[0016] The beneficial technical effects of this invention are as follows: 1. The reactor control and protection system simulation and commissioning device provided by this invention, for Hualong One unit, can be used to start the DCS joint commissioning window in advance, immediately after the on-site DCS is installed and ready (conservatively estimated to reduce one unexpected shutdown or reactor stoppage induced by RRC transient test during the commissioning start-up phase). It can not only detect hidden defects in advance, reduce the probability of equipment damage or operational events, and improve the level of commissioning safety and quality, but also effectively shorten the fault handling time and thus shorten the commissioning start-up period, which is crucial to the entire commissioning work.

[0017] 2. The reactor control and protection system simulation debugging device and method provided by the present invention can detect configuration errors and parameter setting errors of the reactor control and protection system, discover hidden defects in advance, reduce the probability of equipment damage or operation events during the debugging process, improve the level of debugging safety and quality, and effectively shorten the fault handling time and thus shorten the debugging start-up period.

[0018] 3. The simulation model system and I / O interface device in the reactor control and protection system simulation and commissioning device provided by this invention enable early commissioning of the reactor control and protection system during the DCS commissioning phase. During the DCS commissioning phase, once the DCS cabinet is installed at the unit site, the I / O interface device can connect the DCS cabinet and the simulation model system to form a control closed loop. When the unit's process equipment is not yet ready for operation, the simulation model system can replace the unit's process equipment to pre-commission the reactor control and protection system, identifying and correcting control logic configuration errors and parameter setting errors. The process system and equipment simulation models in the simulation model system can replace the unit's on-site process equipment, forming a control closed loop with the DCS cabinet. The virtual-physical DCS control signal switching interface switches the control signals from the virtual controller in the simulation model system to the DCS cabinet for reactor control and protection system commissioning, identifying and correcting control logic configuration errors and parameter setting errors during the commissioning process. Attached Figure Description

[0019] Figure 1 A functional architecture diagram of a reactor control and protection system simulation and debugging device provided by the present invention; Figure 2 This is a schematic diagram of the virtual-real DCS controller signal switching interface function in an embodiment of the present invention. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0021] like Figure 1As shown, the present invention provides a reactor control and protection system simulation and debugging device, comprising: a simulation model system, an I / O interface device, and a unit control cabinet (DCS cabinet); the simulation model system includes: a human-machine interaction test module, a virtual DCS controller simulation model, a virtual-real DCS control signal switching interface, and process system and equipment simulation models.

[0022] The human-computer interaction testing module is used to issue action commands, control the virtual DCS controller simulation model to perform actions according to the action commands, and monitor the operation status parameters of the virtual DCS controller simulation model.

[0023] The human-machine interaction testing module includes: a DCS second-level operation interface model and a system flowchart interface model. The DCS second-level operation interface model has function operation buttons for the DCS human-machine interface, such as alarm function buttons, trend function buttons, flowchart function buttons, etc., which are used to open various related operation interfaces. The system flowchart interface model stores the flowcharts of the process system and equipment, including the pipeline flow direction of the system and the operation panel of the equipment, which are used to control the on / off and start / stop operations of various equipment.

[0024] The virtual DCS controller simulation model is used to generate control commands based on action instructions, control the process system and equipment simulation models according to the control commands, monitor the simulation results of the process system and equipment simulation models, and generate operating status parameters based on the simulation results. This enables virtual simulation operation of the reactor control system and protection system control logic configuration, and allows for the testing and verification of the DCS configuration logic. The virtual DCS controller simulation model can be used in conjunction with a DCS cabinet for testing and debugging, or it can be installed offline without connection to a DCS cabinet for testing and verification of the DCS configuration logic.

[0025] The virtual DCS controller simulation model includes: a reactor control system simulation model and a reactor protection system simulation model.

[0026] The virtual-real DCS control signal switching interface is used to switch the control commands of the DCS cabinet and the virtual DCS controller simulation model to the process system and equipment simulation model, so as to realize the simulation debugging connected to the DCS cabinet and the offline debugging of the DCS configuration control logic through the virtual DCS controller simulation model without connecting to the DCS cabinet.

[0027] The process system and equipment simulation model is used to simulate the operation of the unit's process systems and equipment, obtaining dynamic process and equipment operating parameters. It provides dynamic process and equipment operating parameters to the DCS cabinet, ensuring dynamic input and responsiveness to DCS control outputs during DCS cabinet commissioning. Simultaneously, the process system and equipment simulation model is also used to perform simulation calculations based on control commands from the DCS cabinet or virtual DCS controller simulation model, generating simulation results and feeding them back to the DCS cabinet or virtual DCS controller simulation model.

[0028] The process system and equipment simulation models include: reactor core simulation model, primary loop thermal-hydraulic simulation model, main steam system thermal-hydraulic simulation model, main feedwater system thermal-hydraulic simulation model, chemical and volume control system thermal-hydraulic simulation model, steam bypass system thermal-hydraulic simulation model, deaerator thermal-hydraulic system, high-pressure feedwater heater thermal-hydraulic system, and low-pressure feedwater heater thermal-hydraulic system.

[0029] The IO interface device is used to transmit the control commands output by the DCS cabinet to the process system and equipment simulation model, and at the same time feed back the simulation calculation results of the process system and equipment simulation model to the DCS cabinet, forming a control closed loop.

[0030] The I / O interface device includes a communication module for communicating with the process system and equipment simulation model, and a power supply module.

[0031] The IO interface device types include various IO cards that communicate with the DCS cabinet. For example, AO, DO, AI, and DI type cards.

[0032] The human-machine interaction test module is connected to the virtual DCS controller simulation model. The process system and equipment simulation models are connected to the virtual DCS controller simulation model through a virtual-real DCS control signal switching interface. The human-machine interaction test module transmits action commands to the virtual DCS controller simulation model. The virtual DCS controller simulation model processes and analyzes the action commands, generates control commands, and transmits the control commands to the process system and equipment simulation models. The process system and equipment simulation models perform corresponding simulation calculations according to the control commands and generate simulation calculation results. The simulation calculation results are fed back to the virtual DCS controller simulation model. The virtual DCS controller simulation model generates operation status parameters based on the operation calculation results and transmits the operation status parameters to the human-machine interaction test module. The human-machine interaction test module monitors the operation status parameters.

[0033] The process system and equipment simulation model and the IO interface device are connected via a virtual-physical DCS control signal switching interface. The DCS cabinet to be debugged is connected to the IO interface device. The DCS operator station transmits action commands to the DCS cabinet to be debugged. The DCS cabinet to be debugged processes and analyzes the action commands, generates control commands, and transmits the control commands to the process system and equipment simulation model. The process system and equipment simulation model performs corresponding simulation calculations according to the control commands and generates simulation calculation results. The simulation calculation results are fed back to the DCS cabinet to be debugged. The DCS cabinet to be debugged generates operation status parameters according to the operation calculation results and transmits the operation status parameters to the DCS operator station. The DCS operator station monitors the operation status parameters.

[0034] The present invention provides a simulation and debugging method for a reactor control and protection system, which specifically includes the following steps: Step 1: Establish connections between various modules in the simulation model system. The process system and equipment simulation model is connected to the virtual DCS controller simulation model through a virtual-real DCS control signal switching interface program, so as to realize the communication between the IO points in the virtual DCS controller simulation model and the process system and equipment simulation model.

[0035] Specifically, the AI, AO, DI, and DO points in the virtual DCS controller simulation model communicate with the corresponding interface points in the process system and equipment simulation models through communication interface software.

[0036] The virtual DCS controller simulation model is connected to the human-computer interaction test module through a communication interface program, so that the human-computer interaction test module can input commands and monitor the status parameters of the virtual DCS controller simulation model. Specifically, the output point of the virtual DCS controller simulation model to the human-computer interaction test module is connected to the corresponding point of the human-computer interaction test module through a communication interface program, and the output point of the human-computer interaction test module to the virtual DCS controller simulation model is connected to the corresponding point of the virtual DCS controller simulation model through a communication interface program.

[0037] Step 2: Establish the connection between the simulation model system and the I / O interface device. The simulation model system and the IO interface device are connected through a virtual-to-real DCS control signal switching interface.

[0038] Specifically, the IO interface device connects the configured IO points, such as AI, AO, DI, and DO points, on the IO interface device to the virtual and real DCS control signal switching interface via network communication. The IO points of the IO interface device establish communication connections with the corresponding interface points in the process system and equipment simulation model through the virtual and real DCS control signal switching interface.

[0039] The virtual-physical DCS control signal switching interface has a communication interface switching function. It can connect the IO points of the IO interface device to the process system and equipment simulation model as needed, or it can switch the communication interface to connect the IO points of the virtual DCS controller simulation model to the process system and equipment simulation model. This enables the switching of control signals between the physical DCS cabinet and the virtual DCS controller simulation model for a specific device in the process system and equipment simulation model. Figure 2 As shown.

[0040] Step 3: Establish the connection between the IO interface device and the DCS cabinet. Specifically, the IO interface device is connected to the DCS cabinet via hardwiring. The IO card terminals on the IO interface device are connected to the IO card terminals on the DCS cabinet via hardwiring, thereby enabling communication of IO signals between the IO interface device and the DCS cabinet.

[0041] Step 4: Perform DCS cabinet simulation debugging Select a DCS cabinet to be debugged and perform DCS cabinet simulation debugging according to the DCS debugging procedure.

[0042] Step 4.1: Based on the actual commissioning requirements, reset the process system and equipment simulation model to the required operating state, simulate the operation of the unit's process system and equipment, obtain dynamic process and equipment operating parameters, and ensure that the operating parameters provided to the DCS cabinet are consistent with the actual commissioning scenario. Step 4.2: Switch the virtual-real DCS control signal switching interface to connect with the DCS cabinet to be debugged. Through the virtual-real DCS control signal switching interface, connect the process system and equipment simulation model with the IO interface device, and connect the IO points of the DCS cabinet to be debugged with the IO interface device. This enables the process system and equipment simulation model to communicate with the DCS cabinet to be debugged. The control logic functions of the remaining un-debugged DCS cabinets are implemented by the virtual DCS controller simulation model. Step 4.3: The DCS operator station generates action commands based on actual commissioning requirements and transmits these commands to the DCS cabinet to be commissioned. The DCS cabinet processes and analyzes the action commands, generates control commands, and transmits these control commands to the process system and equipment simulation model. The process system and equipment simulation model performs corresponding simulation calculations based on the control commands and generates simulation results, which are then fed back to the DCS cabinet to be commissioned. The DCS cabinet generates operation status parameters based on the simulation results and transmits these parameters to the DCS operator station. The DCS operator station monitors and displays the operation status parameters. If the operation status parameters are inconsistent with the control commands, it indicates a problem with the control logic related to those commands, and targeted troubleshooting can be performed.

[0043] In one specific embodiment, for example, when performing a valve opening operation, the DCS operator station generates a valve opening action command. This command is processed and analyzed by the DCS cabinet under test, generating a valve opening control command, which is then transmitted to the process system and equipment simulation model. Upon receiving the valve opening control command, the process system and equipment simulation model open the corresponding valve and feed back the valve opening status to the DCS cabinet under test. The DCS cabinet generates valve opening status parameters based on the feedback and transmits them to the DCS operator station. The DCS operator station monitors and observes the valve opening status parameters. If the valve is not observed to be open at the DCS operator station, it indicates a problem with the valve's control logic, allowing for targeted troubleshooting.

[0044] Step 5: Perform offline debugging of the DCS control logic without connecting to the DCS cabinet. Step 5.1: Download the control logic configuration files of the reactor control system and reactor protection system into the virtual DCS controller simulation model.

[0045] Step 5.2: Switch the virtual-real DCS control signal switching interface to connect with the virtual DCS controller simulation model. Through the virtual-real DCS control signal switching interface, connect the virtual DCS controller simulation model with the process system and equipment simulation model to communicate, so that the process system and equipment simulation model can be connected with the control logic of the reactor control system and reactor protection system to be debugged running in the virtual DCS controller simulation model.

[0046] Step 5.3: The human-machine interaction test module generates action commands based on actual debugging requirements and transmits these commands to the virtual DCS controller simulation model. The virtual DCS controller simulation model processes and analyzes the action commands, generates control commands, and transmits these control commands to the process system and equipment simulation models. The process system and equipment simulation models perform corresponding simulation calculations based on the control commands and generate simulation results, which are then fed back to the virtual DCS controller simulation model. The virtual DCS controller simulation model generates operation status parameters based on the simulation results and transmits these parameters to the human-machine interaction test module. The human-machine interaction test module monitors and displays the operation status parameters. If the operation status parameters are inconsistent with the control commands, it indicates a problem with the control logic related to those commands, and targeted troubleshooting can be performed.

[0047] In one specific embodiment, for example, when performing a valve opening operation, the human-machine interaction test module generates a valve opening action command. This command is processed and analyzed by the virtual DCS controller simulation model to generate a valve opening control command, which is then transmitted to the process system and equipment simulation model. Upon receiving the valve opening control command, the process system and equipment simulation model opens the corresponding valve and feeds back the valve opening status to the virtual DCS controller simulation model. The virtual DCS controller simulation model generates valve opening status parameters based on the feedback and transmits them to the human-machine interaction test module. The human-machine interaction test module monitors and observes the valve opening status parameters. If the valve is not observed to be open in the human-machine interaction test module, it indicates a problem with the valve's control logic, and targeted troubleshooting can be performed.

[0048] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. All contents not described in detail in the present invention can be derived from existing technologies.

Claims

1. A reactor control and protection system simulation and debugging device, characterized in that, The device includes: a simulation model system, an I / O interface device, and a DCS cabinet; the simulation model system includes: a process system and an equipment simulation model; The process system and equipment simulation model is used to simulate the operation of the unit's process system and equipment, obtain dynamic process and equipment operating parameters; it is used to perform simulation calculations based on the control commands of the DCS cabinet, generate simulation calculation results, and feed them back to the DCS cabinet or virtual DCS controller simulation model. The IO interface device is used to transmit the control commands output by the DCS cabinet to the process system and equipment simulation model, and at the same time feed back the simulation calculation results of the process system and equipment simulation model to the DCS cabinet, forming a control closed loop.

2. The reactor control and protection system simulation and debugging device according to claim 1, characterized in that, The process system and equipment simulation model are connected to the IO interface device, and the DCS cabinet to be debugged is also connected to the IO interface device. The DCS operator station transmits action commands to the DCS cabinet to be debugged. The DCS cabinet processes and analyzes the action commands, generates control commands, and transmits the control commands to the process system and equipment simulation model. The process system and equipment simulation model performs corresponding simulation calculations based on the control commands and generates simulation results. The simulation results are fed back to the DCS cabinet to be debugged. The DCS cabinet generates operation status parameters based on the simulation results and transmits the operation status parameters to the DCS operator station. The DCS operator station monitors the operation status parameters.

3. The reactor control and protection system simulation and debugging device according to claim 1, characterized in that, The simulation model system also includes: a human-computer interaction testing module and a virtual DCS controller simulation model; The human-computer interaction testing module is used to issue action commands, control the virtual DCS controller simulation model to perform actions according to the action commands, and monitor the operation status parameters of the virtual DCS controller simulation model. The virtual DCS controller simulation model is used to generate control commands based on action commands, control the simulation calculation of the process system and equipment simulation model based on the control commands, monitor the simulation calculation results of the process system and equipment simulation model, and generate operation status parameters based on the simulation calculation results of the process system and equipment simulation model. The process system and equipment simulation model is used to simulate the operation of the unit's process system and equipment, obtain dynamic process and equipment operating parameters; it is used to perform simulation calculations based on the control instructions of the virtual DCS controller simulation model, generate simulation calculation results, and feed them back to the virtual DCS controller simulation model.

4. The reactor control and protection system simulation and debugging device according to claim 3, characterized in that, The human-machine interaction test module is connected to the virtual DCS controller simulation model, and the process system and equipment simulation model are communicatively connected to the virtual DCS controller simulation model. The human-machine interaction test module transmits action commands to the virtual DCS controller simulation model, which processes and analyzes the action commands, generates control commands, and transmits the control commands to the process system and equipment simulation models. The process system and equipment simulation models perform corresponding simulation calculations based on the control commands and generate simulation calculation results, which are then fed back to the virtual DCS controller simulation model. The virtual DCS controller simulation model generates operation status parameters based on the operation calculation results and transmits these operation status parameters to the human-machine interaction test module, which monitors the operation status parameters.

5. The reactor control and protection system simulation and debugging device according to claim 3, characterized in that, The simulation model system further includes: a virtual-real DCS control signal switching interface, which is used to switch the control commands of the DCS cabinet and the virtual DCS controller simulation model to the process system and equipment simulation model; the process system and equipment simulation model and the IO interface device are connected and communicate through the virtual-real DCS control signal switching interface, and the process system and equipment simulation model and the virtual DCS controller simulation model are connected and communicate through the virtual-real DCS control signal switching interface.

6. The reactor control and protection system simulation and debugging device according to claim 3, characterized in that, The human-machine interaction testing module includes: a DCS second-layer operation interface model and a system flowchart interface model; the DCS second-layer operation interface model has function operation buttons for the DCS human-machine interface, such as alarm function buttons, trend function buttons, flowchart function buttons, etc., which are used to open various related operation interfaces; the system flowchart interface model stores flowcharts of the process system and equipment, including the pipeline flow direction of the system and the operation panel of the equipment, which are used to control the on / off and start / stop operations of various equipment.

7. The reactor control and protection system simulation and debugging device according to claim 1, characterized in that, The process system and equipment simulation models include: reactor core simulation model, primary loop thermal-hydraulic simulation model, main steam system thermal-hydraulic simulation model, main feedwater system thermal-hydraulic simulation model, chemical and volume control system thermal-hydraulic simulation model, steam bypass system thermal-hydraulic simulation model, deaerator thermal-hydraulic system, high-pressure feedwater heater thermal-hydraulic system, and low-pressure feedwater heater thermal-hydraulic system.

8. A method for simulating and debugging a reactor control and protection system, employing a reactor control and protection system simulation and debugging device according to claim 5, characterized in that, The method includes: Step 1: Establish connections between the various modules in the simulation model system; Step 2: Establish the connection between the simulation model system and the I / O interface device; Step 3: Establish the connection between the IO interface device and the DCS cabinet; Step 4: Perform DCS cabinet simulation and debugging; Step 5: Perform offline debugging of the DCS control logic without connecting to the DCS cabinet.

9. The simulation and debugging method for a reactor control and protection system according to claim 8, characterized in that, Step 4 includes: Step 4.1: Simulation Model of Process System and Equipment. Based on the actual commissioning requirements, the simulation model of the process system and equipment of the unit is used to obtain dynamic process and equipment operating parameters. Step 4.2: Switch the virtual and real DCS control signal switching interface to connect with the DCS cabinet to be debugged, so that the process system and equipment simulation model can communicate with the DCS cabinet to be debugged. Step 4.3: The DCS operator station generates action commands. These commands are processed and analyzed by the DCS cabinet to be debugged, generating control commands, which are then transmitted to the process system and equipment simulation model. The process system and equipment simulation model perform corresponding simulation calculations based on the control commands and generate simulation results, which are then fed back to the DCS cabinet to be debugged. The DCS cabinet to be debugged generates operation status parameters based on the simulation results and transmits them to the DCS operator station. The DCS operator station monitors the operation status parameters. If the operation status parameters are inconsistent with the control commands, it indicates that there is a problem with the control logic related to the control commands, and targeted troubleshooting is performed.

10. A simulation and debugging method for a reactor control and protection system according to claim 8, characterized in that, Step 5 includes: Step 5.1: Download the control logic configuration files of the reactor control system and reactor protection system into the virtual DCS controller simulation model; Step 5.2: Switch the virtual-real DCS control signal switching interface to connect with the virtual DCS controller simulation model, so that the process system and equipment simulation model are connected with the control logic of the reactor control system and reactor protection system to be debugged running in the virtual DCS controller simulation model; Step 5.3: The human-machine interaction test module generates action commands. These commands are processed and analyzed by the virtual DCS controller simulation model to generate control commands, which are then transmitted to the process system and equipment simulation models. The process system and equipment simulation models perform corresponding simulation calculations based on the control commands and generate simulation results, which are then fed back to the virtual DCS controller simulation model. The virtual DCS controller simulation model generates operation status parameters based on the simulation results and transmits them to the human-machine interaction test module. The human-machine interaction test module monitors the operation status parameters. If the operation status parameters are inconsistent with the control commands, it indicates a problem with the control logic related to the control commands, and targeted troubleshooting is performed.

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