Control simulation method, system, equipment and medium based on advanced steam generator system

Abstract

The invention discloses a control simulation method, system and device based on an advanced steam generator system and a medium. The method comprises the steps that a control requirement is sent to the steam generator system; performing simulation control on a real actuator in the nuclear power plant according to the control requirement to obtain simulation control information; according to the simulation control information, simulating the operation condition of a steam generator, and generating temperature, pressure, coolant liquid level, coolant flow and steam flow data; according to the method, the system, the equipment and the medium, generated temperature, pressure, coolant liquid level, coolant flow and steam flow data are converted into actual sensor signals, control simulation based on the advanced steam generator system is completed, actual hardware is used in the method, the system, the equipment and the medium so that the controlled steam generator system can have the actual working effect, and meanwhile, the control simulation effect is improved. And a high-guarantee simulation model is adopted in a place where real hardware cannot be used, so that the simulation precision is greatly improved.

Description

Technical Field

[0001] The present invention belongs to the field of control science and engineering technology, and relates to a control simulation method, system, equipment and medium based on an advanced steam generator system. Background Art

[0002] As nuclear power develops, the biggest problem is its safety and reliability. There have been profound lessons in history on this issue. The important strategy to solve this problem is to improve the control performance of the control system. Therefore, the role of nuclear power simulation is self-evident. According to the analysis and research on the operating principle of nuclear power plants, it is found that the control system of nuclear power plants plays a very important role in the safe operation of power plants. Due to the particularity of the steam generator system, the nuclear power unit cannot be directly tested on the real system like conventional devices or equipment. The traditional control system hardware-in-the-loop performance test uses a real DCS control system and a virtual model for testing. Therefore, the test effect is closely related to the simulation accuracy of the virtual model. Traditional steam generator simulation technology uses pure simulation models. Once the simulation model is not accurate enough, it will cause a large error in the simulation results and cannot accurately guide the actual project. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a control simulation method, system, device and medium based on an advanced steam generator system. The method, system, device and medium use real hardware to achieve actual working effects on the controlled steam generator system. At the same time, high-assurance simulation models are used in places where real hardware cannot be used, thereby greatly improving simulation accuracy.

[0004] In order to achieve the above object, the present invention adopts the following technical scheme:

[0005] In one aspect, the present invention provides a control simulation method based on an advanced steam generator system, comprising:

[0006] Issue control requests to steam generator systems;

[0007] Performing simulation control on real actuators in the nuclear power plant according to the control requirements to obtain simulation control information;

[0008] Simulate the operating conditions of the steam generator according to the simulation control information to generate temperature, pressure, coolant level, coolant flow rate and steam flow rate data;

[0009] The generated temperature, pressure, coolant level, coolant flow and steam flow data are converted into actual sensor signals to complete the control simulation based on the advanced steam generator system.

[0010] Furthermore, a distributed control system or a programmable logic controller is used to issue control requirements to the steam generator system.

[0011] Furthermore, the actuator includes but is not limited to: a pump and a valve.

[0012] Furthermore, a rotation speed measuring device and a valve opening measuring device are used to detect the simulation control information.

[0013] Furthermore, a steam generator virtual model, a cold pipe section virtual model and a hot pipe section virtual model are used to simulate the operation status of the steam generator.

[0014] Furthermore, a PXI semiconductor kit is used to convert the actual sensor signal into the data type accepted by the steam generator system control module.

[0015] In a second aspect of the present invention, the present invention provides a control simulation system based on an advanced steam generator system, comprising:

[0016] A steam generator system control module, used for issuing control requirements to the steam generator system;

[0017] A steam generator system execution module is used to perform simulation control on a real actuator in a nuclear power plant according to the control requirements to obtain simulation control information;

[0018] a steam generator system virtual model module, for simulating the operation of the steam generator according to the simulation control information, and generating temperature, pressure, coolant level, coolant flow rate and steam flow rate data;

[0019] A steam generator system virtual model module, used to simulate the operation status of the steam generator according to the simulation control information detected by the steam generator system execution detection module;

[0020] The steam generator system virtual sensor module is used to convert the generated temperature, pressure, coolant level, coolant flow and steam flow data into actual sensor signals to complete the control simulation based on the advanced steam generator system.

[0021] In a third aspect of the present invention, a computer device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the control simulation method based on the advanced steam generator system when executing the computer program.

[0022] In a fourth aspect of the present invention, the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the control simulation method based on the advanced steam generator system are implemented.

[0023] The present invention has the following beneficial effects:

[0024] The control simulation method, system, equipment and medium based on the advanced steam generator system described in the present invention not only include a mechanism simulation model of the steam generator system during specific operation, but also add a steam generator system execution module used in the actual system, thereby improving the credibility of the device operation results.

[0025] Furthermore, distributed control systems or programmable logic controllers are equipment that have been used for a long time in various industrial fields and are safe and stable. The steam generator system must first ensure safe and stable operation. Therefore, the steam generator system control module adopts a distributed control system or a programmable logic controller.

[0026] Furthermore, actual steam generator systems often contain pumps, valves, etc. Adding these physical objects helps to improve the accuracy of the device operation. For example, when the pump is in use, the pump speed does not change immediately with the change of the control system. Adding physical equipment can simulate the delayed response caused by the hardware equipment.

[0027] Furthermore, the use of the actuator detection device can realize the conversion of the actual action process of the actuator into data required by the virtual model module of the steam generator system.

[0028] Furthermore, setting up a virtual model module of the steam generator system can simulate the actual operation status of the steam generator system from a mechanism perspective.

[0029] Furthermore, data such as pressure, temperature, and flow rate are data generated during the actual operation of the steam generator, and the control of the steam generator system mainly uses these data.

[0030] Furthermore, the main function of the PXI kit is to convert the data in the software into hardware data, that is, into the data type that can be accepted by the steam generator system control module, that is, to realize the conversion of data from software to hardware.

[0031] Furthermore, temperature virtual sensors, flow virtual sensors, pressure virtual sensors and position virtual sensors are used to convert the actual temperature, pressure, coolant level, coolant flow and steam flow in the model into actual signal quantities of sensors measuring these parameters.

[0032] In summary, the present invention combines the actuators such as pumps and valves actually used in the steam generator system with the mechanism simulation model of the steam generator system, and realizes the conversion of the data of the whole device from "hard" to "soft" and from "soft" to "hard" by using the steam generator system execution detection module and the NI PXI kit, which not only realizes the closed loop of the whole device, but also greatly improves the operation accuracy of the whole device. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0034] Figure 1 It is a system structure diagram of the present invention. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only an embodiment of a part of the present invention, not all embodiments, and is not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concepts disclosed in the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0036] The accompanying drawings show schematic diagrams of structures according to embodiments disclosed in the present invention. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0037] Embodiment 1

[0038] refer to Figure 1 Based on the control simulation method of the advanced steam generator system, a control requirement is issued to the steam generator system, and the actuators in the steam generator system are simulated and controlled; the information of the simulation control is detected, and the operation status of the steam generator is simulated according to the detected simulation control information; the temperature, pressure, primary circuit coolant flow, secondary circuit feed water flow and steam flow data generated by the simulated steam generator operation status are converted into actual sensor signals to realize simulation control.

[0039] Among them, a distributed control system or a programmable logic controller is used to issue control requirements to the steam generator system.

[0040] The actuator includes driving mechanisms such as pumps and valves, and a speed measuring device and a valve opening measuring device are used to detect the information of the simulation control.

[0041] A steam generator virtual model is used to simulate the operating conditions of the steam generator.

[0042] A PXI semiconductor kit is used to convert the actual sensor signal into the data type accepted by the steam generator system control module.

[0043] See also Figure 1 The present invention provides a steam generator simulation control system and equipment, including a steam generator system control module, a steam generator system execution module, a steam generator system execution detection module, a steam generator system virtual model module, a steam generator system virtual sensor module and a PXI semiconductor kit; the steam generator system control module is connected to the steam generator system virtual model module through the steam generator system execution module and the steam generator system execution detection module in sequence, receives information detected by the steam generator system execution detection module through the steam generator system virtual model module, determines the operating status of the simulated steam generator, and the steam generator system virtual model module returns the parameters of the steam generator virtual model in operation to the steam generator system control module through the steam generator system virtual sensor module and the steam generator system control module to realize simulation control.

[0044] Steam generator system control module: The steam generator system control module is a control device used in traditional steam generator systems, such as DCS, PLC, etc. The existing control theory is verified in the steam generator system control module. At the same time, because all operations are safe and reliable, even if the control fails, it will not cause an accident. Therefore, the steam generator system control module can also verify advanced control theories and control algorithms as well as conventional and unconventional steam generator system failures.

[0045] The steam generator system control module is used to control the normal operation of the steam generator system, such as controlling the start and stop of the steam generator system and the change of the working power of the steam generator system and other conventional operating conditions, as well as controlling the emergency stop or responsive protection action of the steam generator system in real time during emergency operation or accidents.

[0046] The steam generator system control module includes analog input devices, analog output devices, digital input devices, digital output devices, counter devices, positioning devices, time stamp devices, pulse output devices, necessary field bus communication devices, etc. In addition, the steam generator system control module also includes CPU devices that drive the above devices.

[0047] The communication between analog input devices, analog output devices, digital input devices, digital output devices, counter devices, positioning devices, time stamp devices, pulse output devices, necessary field bus communication devices, etc. and CPU devices is realized through dedicated communication cables or communication connectors or communication bases. The analog input devices, analog output devices, digital input devices, digital output devices, counter devices, positioning devices, time stamp devices, pulse output devices, necessary field bus communication devices, etc. driven by the same CPU device do not communicate with each other. The communication between different CPU devices is completed through the communication modules driven by them and the cables between the communication modules.

[0048] Steam generator system actuator module: actuators on the target steam generator system, such as pumps, valves and other driving mechanisms.

[0049] The actuators on the target steam generator system include related pumps, valves, etc. The main equipment related to the pump is the motor drive, including but not limited to the frequency converter, etc., which mainly controls the start, stop, speed, torque, etc. of the motor. The frequency converter is connected to the steam generator system control module through the corresponding communication bus, and the hardware is a communication cable that can support the corresponding communication technology.

[0050] The valve control is driven by corresponding hydraulic equipment. The driving force of the hydraulic equipment also comes from the motor. The motor drive mechanism also uses a frequency converter or a dedicated drive power supply. Its working condition is also connected to the steam generator system control module through a communication cable and is controlled by the steam generator system control module.

[0051] During normal operation, the steam generator system actuator not only needs to use the above-mentioned drivers and the corresponding devices on the steam generator system control module, but also needs to use analog input devices, analog output devices, digital input devices, digital output devices, counter devices, positioning devices, timestamp devices, pulse output devices, necessary field bus communication equipment, etc. to ensure the normal operation of the actuator.

[0052] Steam generator system execution detection module: According to the steam generator system execution module, the action status of the steam generator system execution module is detected, and the detected information is sent to the steam generator system virtual model module, including a speed measuring device and a valve opening measuring device, to detect the motor speed of the pump, the opening of the valve, etc.

[0053] The steam generator system execution detection module is mainly a device for detecting the working condition of the aforementioned steam generator system actuator, specifically including but not limited to a speed detection device for rotating mechanisms such as motors, a valve position and valve opening detection device for valves, etc.

[0054] Specifically, the speed detection device of the rotating mechanism such as the motor is directly connected to the main shaft of the first rotating mechanism through a coupling, or the speed detection device can be connected after being decelerated by a transmission method such as gear transmission, chain, worm gear, etc.

[0055] For valve position detection devices and valve opening detection devices of valves, etc., the position detection sensor can be connected to the driving handle of the valve to obtain the position or opening information of the valve.

[0056] Steam generator system virtual model module: designed to solve the problem that it is inconvenient to use actual equipment in the steam generator system, such as steam generator virtual model, cold pipe section virtual model and hot pipe section virtual model. At the same time, the steam generator system virtual model also has the function of data conditioning, which can process the signal of the steam generator system execution detection module into data that can be used by the steam generator system virtual model module, and can also convert the data generated by the steam generator system virtual model module, such as real-time temperature and pressure, into sensor signals and transmit them to the steam generator system control module.

[0057] The virtual model module of the steam generator system is simulated by a general-purpose computer, including but not limited to the virtual model of the steam generator, the virtual model of the cold pipe section and the virtual model of the hot pipe section. The models are not connected by data flow, that is, the modules of each part are connected in physical principle in the simulation model. The specific connection method is as follows:

[0058] The connection between the hot pipe section virtual model and the steam generator virtual model is achieved by transferring the physical diameter of the interface, fluid pressure, fluid temperature, and fluid flow rate between the two.

[0059] The connection between the steam generator virtual model and the cold pipe section virtual model is achieved by transferring the physical diameter of the interface, fluid pressure, fluid temperature, and fluid flow rate between the two.

[0060] The data generated by the steam generator system virtual model module include temperature, pressure, coolant level, coolant flow, steam flow, etc.

[0061] Steam generator system virtual sensor module: The necessary data generated by the steam generator system virtual model module is converted into actual sensor signals through a data cleaning program and transmitted to the steam generator system control module.

[0062] The steam generator system virtual sensor module mainly includes four virtual sensors: temperature, flow, pressure and position. It mainly converts the actual temperature, pressure, coolant level, coolant flow and steam flow in the model into the actual signal quantity of the sensor that measures these parameters. For example, the temperature sensor usually converts the temperature data into a 4-20mA analog signal and transmits it to the DCS, and the role of the virtual sensor is to convert the actual temperature data in the model into a 4-20mA current signal and transmit it through NI's PXI acquisition device.

[0063] The virtual sensor module of the steam generator system adopts the PXI semiconductor kit of NI Company to transmit the temperature, pressure, coolant level, coolant flow rate and steam flow rate in the software to the actual hardware, that is, to the steam generator system control module.

[0064] The present invention discloses a control simulation system based on an advanced steam generator system, and the working process is as follows:

[0065] 1) Connecting the steam generator system control module and the steam generator system execution module by hardware wiring;

[0066] 2) Connect the steam generator system control module and the wiring terminals of the NI PXI kit by hardware wiring;

[0067] 3) connecting the steam generator system execution module with the corresponding steam generator system execution detection module;

[0068] 4) Start the steam generator system virtual sensor module program and connect to the NI PXI kit;

[0069] 5) Start the steam generator system virtual model module program, connect the steam generator system virtual model module program and the steam generator system execution detection module, and connect the steam generator system virtual model module program and the steam generator system virtual sensor module.

[0070] 6) Start the test and set the required operating mode, fault mode, control algorithm, etc. in the steam generator system control module.

[0071] 7) When it is necessary to test a steam generator system execution module that has not been verified by the actual steam generator system, such as a new pump, a new valve, etc., the new equipment can be replaced by the corresponding steam generator system execution module in the hardware-in-the-loop advanced steam generator system control simulation device, and the above steps 1 to 6 can be repeated to complete the testing of the new equipment.

[0072] The hardware-in-the-loop advanced steam generator system control simulation device of the present invention overcomes the deviation of simulation results caused by simulation model accuracy error and the error of simulation results caused by imperfection and incompleteness of simulation model in the traditional full-range virtual simulation of steam generator system by using real actuators as much as possible. While introducing as much actual hardware as possible, high-fidelity models that cannot use actual hardware devices are also added, so that the simulation of steam generator system can be realized.

[0073] At the same time, because high-assurance models are used for steam generators and other devices that are not easy to use actual devices, and a large number of actually used equipment are added to the entire device, the device described in the present invention can also verify the actuators and retrograde of the steam generator system. When a specific actuator performance requirement in the steam generator system is known, the actuator can be added to the hardware-in-the-loop advanced steam generator system control simulation device described in the present invention to replace the original actuator device, thereby detecting whether the new equipment can meet the actual operation requirements of the steam generator system.

[0074] In summary, the steam generator simulation control system and equipment of the present invention realizes the closed-loop operation of the steam generator system by combining the steam generator system mechanism model with actual valves, pumps, etc., thereby improving the accuracy of the operation results while ensuring the correctness of the operation results.

[0075] Embodiment 2

[0076] A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the control simulation method based on an advanced steam generator system are implemented. The memory may include a memory, such as a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk memory, etc. The processor, the network interface, and the memory are interconnected through an internal bus, and the internal bus may be an industrial standard architecture bus, a peripheral component interconnection standard bus, an extended industrial standard structure bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. The memory is used to store programs. Specifically, the program may include a program code, and the program code includes computer operation instructions. The memory may include a memory and a non-volatile memory, and provide instructions and data to the processor.

[0077] Embodiment 3

[0078] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the control simulation method based on the advanced steam generator system are implemented. Specifically, the computer-readable storage medium includes, but is not limited to, for example, a volatile memory and / or a non-volatile memory. The volatile memory may include a random access memory (RAM) and / or a cache memory, etc. The non-volatile memory may include a read-only memory (ROM), a hard disk, a flash memory, an optical disk, a magnetic disk, etc.

[0079] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0080] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0081] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0082] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A control simulation method based on an advanced steam generator system, characterized in that: include: Issue control requests to steam generator systems; Performing simulation control on real actuators in the nuclear power plant according to the control requirements to obtain simulation control information; Simulate the operating conditions of the steam generator according to the simulation control information to generate temperature, pressure, coolant level, coolant flow rate and steam flow rate data; The generated temperature, pressure, coolant level, coolant flow and steam flow data are converted into actual sensor signals to complete the control simulation based on the advanced steam generator system.

2. The control simulation method based on the advanced steam generator system according to claim 1, characterized in that: A distributed control system or programmable logic controller is used to issue control requirements to the steam generator system.

3. The control simulation method based on the advanced steam generator system according to claim 1, characterized in that: The actuators include but are not limited to: pumps and valves.

4. The control simulation method based on the advanced steam generator system according to claim 1, characterized in that: The rotation speed measuring device and the valve opening measuring device are used to detect the simulation control information.

5. The control simulation method based on the advanced steam generator system according to claim 1, characterized in that: The steam generator virtual model, the cold pipe section virtual model and the hot pipe section virtual model are used to simulate the operation status of the steam generator.

6. The control simulation method based on the advanced steam generator system according to claim 1, characterized in that: A PXI semiconductor kit is used to convert the actual sensor signal into the data type accepted by the steam generator system control module.

7. A control simulation system based on an advanced steam generator system, characterized in that: include: A steam generator system control module, used for issuing control requirements to the steam generator system; A steam generator system execution module is used to perform simulation control on a real actuator in a nuclear power plant according to the control requirements to obtain simulation control information; a steam generator system virtual model module, for simulating the operation of the steam generator according to the simulation control information, and generating temperature, pressure, coolant level, coolant flow rate and steam flow rate data; A steam generator system virtual model module, used to simulate the operation status of the steam generator according to the simulation control information detected by the steam generator system execution detection module; The steam generator system virtual sensor module is used to convert the generated temperature, pressure, coolant level, coolant flow and steam flow data into actual sensor signals to complete the control simulation based on the advanced steam generator system.

8. The control simulation system based on the advanced steam generator system according to claim 7, characterized in that: A PXI semiconductor kit is used to convert the actual sensor signal into the data type accepted by the steam generator system control module.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the control simulation method based on the advanced steam generator system according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the control simulation method based on an advanced steam generator system according to any one of claims 1 to 7 are implemented.

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