Distributed control system (DCS) control cabinet, industrial control network and power distribution system fusion simulation system

Abstract

The invention belongs to the technical field of nuclear power, and particularly relates to a DCS control cabinet, industrial control network and power distribution system fusion simulation system. The DCS control cabinet three-dimensional simulation model, the DCS industrial control network simulation model and the DCS power distribution simulation model are fused, data interaction among the models is realized, and maintenance scene simulation and fault drilling of DCS network faults and power distribution faults can be carried out. And a digital operation and maintenance tool is provided for DCS operation and maintenance of the nuclear power plant. A DCS industrial control network and a power distribution system which have important influence on a DCS system of a nuclear power plant are fused into a DCS simulation system, so that simulation of the DCS system is provided under normal and fault conditions of a switch and a cabinet power distribution system. Therefore, a DCS simulation system which is more vivid to the field is provided, a credible simulation analysis and verification tool is provided for DCS operation and maintenance of a nuclear power plant, and digital transformation of DCS operation and maintenance is assisted.

Description

Technical Field

[0001] The present invention belongs to the technical field of nuclear power, and in particular relates to a DCS control cabinet, an industrial control network and a power distribution system fusion simulation system. Background Art

[0002] With the development of digital instrumentation and control technology, DCS (Distributed Control System) has been widely used in nuclear power plants due to its characteristics of distributed control, centralized monitoring, and reliable and stable control process. The DCS system brings many conveniences and advantages to the professional operation and maintenance of nuclear power unit instrumentation and control and equipment management, but it also greatly increases the complexity of maintenance.

[0003] In the related technologies, the simulation of DCS system only focuses on the simulation of DCS control logic, and pays less attention to the simulation of DCS power distribution, network and other fields, resulting in large differences and low consistency between the existing DCS simulation system and the real system.

[0004] At present, the design and operation of nuclear power plants are all transforming towards digitalization. Nuclear power plant DCS maintenance is also facing the need for digital transformation. In order to meet the requirements of digital transformation of nuclear power plant DCS operation and maintenance, it is necessary to develop an overall integrated simulation model for the main components of the nuclear power plant DCS system, such as control cabinets, industrial control networks and power distribution systems, and build a DCS system simulation model that is highly consistent with the composition and structure of the on-site DCS for DCS digital operation and maintenance. Summary of the invention

[0005] In order to overcome the problems existing in the related art, a DCS control cabinet, industrial control network and power distribution system fusion simulation system is provided, the system comprising: multiple power distribution simulation models, multiple control cabinet simulation models and industrial control network simulation models;

[0006] Each power distribution simulation model includes: a power supply bus simulation module and a power supply switch simulation module. The power supply bus simulation module is used to simulate the voltage and current state of the power supply bus. The power supply switch simulation module is used to simulate the closed state of the power supply switch and affect the power supply state of the corresponding bus.

[0007] Each control cabinet simulation model includes: control logic simulation module, power supply simulation module, communication simulation module, and IO card simulation module; the control logic simulation module is used to simulate the logic operation function of the control cabinet, the power supply simulation module is used to simulate the power supply function of the control cabinet; the communication simulation module is used to simulate the internal and external communication functions of the control cabinet; the IO card simulation module is used to simulate the input and output functions of the IO card of the control cabinet;

[0008] The communication simulation modules of each control cabinet simulation model are respectively connected to the industrial control network simulation model; the power supply simulation module of each control cabinet simulation model is connected to the power supply bus simulation module of the corresponding power distribution simulation model.

[0009] In a possible implementation, the industrial control network simulation model includes: a plurality of room-level switch simulation modules and a plurality of unit-level switch simulation modules, the room-level switch simulation module is used to simulate the communication protocol and communication link of the room-level switch, and the unit-level switch simulation module is used to simulate the communication protocol and communication link of the unit-level switch;

[0010] Each room-level switch simulation module is connected to the communication simulation module of the corresponding control cabinet simulation model, and each unit-level switch simulation module is connected to the corresponding room-level switch simulation module.

[0011] In one possible implementation, the system is used to simulate the data exchange process and the load of the communication link between the interconnected unit-level switch simulation modules, room-level switch simulation modules and control cabinet simulation models, and to display the real-time data transmission status and the communication change process under the switch failure situation in a visualized manner.

[0012] In a possible implementation, the system includes a redundant switch model and a redundant communication link model.

[0013] In one possible implementation, the system is used to verify the redundant structure. When the communication link between the control cabinet simulation model and the corresponding room-level switch simulation module is set to fault, the communication function of another redundant communication link between the control cabinet simulation model and the corresponding room-level switch simulation module is verified.

[0014] In one possible implementation, the industrial control network simulation model adopts a hierarchical modeling mechanism, which is divided into a network layer, a node layer, and a process layer. Each layer models and simulates the network topology, node function composition, and protocol model algorithm.

[0015] In a possible implementation, a corresponding control cabinet simulation model is set in the system to simulate link failure and node failure, and the change of data flow direction when a failure occurs and when a failure is restored is displayed.

[0016] In one possible implementation, the system configures the industrial control network simulation model to output preset indicator parameters to each connected control cabinet simulation model, and configures the control cabinet simulation model and the power distribution simulation model to form a preset power distribution simulation to demonstrate the transmission performance of the industrial control network and the comprehensive impact of the power distribution system status. The indicator parameters include transceiver throughput, end-to-end delay, packet loss rate, and link bandwidth occupancy.

[0017] In one possible implementation, the following steps are used to generate a DCS control cabinet, industrial control network, and power distribution system fusion simulation system:

[0018] Step 1: Integrate each control cabinet simulation model with the corresponding power distribution simulation model, and connect the power distribution simulation model with the power supply information of the corresponding control cabinet simulation model;

[0019] Step 2: In the DCS industrial control network simulation model, set the configuration information of each switch model. The configuration information should be the same as the configuration information of the real object being simulated;

[0020] Step 3: Set the network configuration information of each control cabinet simulation model. The network configuration information should be the same as the configuration information of the real object being simulated;

[0021] Step 4: Connect the configured switch model simulation model through the network. The network topology should be consistent with the real object being simulated to form a DCS industrial control network simulation model.

[0022] Step 5: Integrate the simulation models of each control cabinet with the DCS industrial control network simulation model. The network connection topology should be the same as the real object being simulated, forming a simulation system integrating DCS control cabinet, industrial control network and power distribution.

[0023] The beneficial effects of the present disclosure are as follows: the present disclosure integrates the three-dimensional simulation model of the DCS control cabinet, the DCS industrial control network simulation model and the DCS power distribution simulation model to realize data interaction between the models, and can perform maintenance scenario simulation and fault drills for DCS network failures and power distribution failures. Provide digital operation and maintenance tools for nuclear power plant DCS operation and maintenance. Integrating the DCS industrial control network and power distribution system, which have an important impact on the DCS system of a nuclear power plant, into the DCS simulation system can provide simulations of the DCS system under normal and fault conditions for switches and cabinet power distribution systems. This provides a DCS simulation system that is more realistic than the site, provides reliable simulation analysis and verification tools for nuclear power plant DCS operation and maintenance, and helps the digital transformation of DCS operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a block diagram of a DCS control cabinet, industrial control network and power distribution system integrated simulation system shown in an embodiment of the present disclosure.

[0025] Figure 2 It is a block diagram of another DCS control cabinet, industrial control network and power distribution system integrated simulation system shown in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0026] The present disclosure is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] Unless otherwise defined, the technical and scientific terms used in the present disclosure have the same meanings as those generally understood by those skilled in the art to which the present disclosure belongs; the terms used in the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure; the term "including" and any variations thereof in the present disclosure are intended to cover non-exclusive inclusions. Obviously, the embodiments described in the present disclosure are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative efforts are within the scope of protection of the present disclosure.

[0028] Reference to "embodiments" in this disclosure means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the disclosure. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] Figure 1 is a block diagram of a DCS control cabinet, industrial control network and power distribution system fusion simulation system shown in an embodiment of the present disclosure, such as Figure 1 As shown, the system includes: multiple power distribution simulation models, multiple control cabinet simulation models and an industrial control network simulation model.

[0030] Each power distribution simulation model includes: a power supply bus simulation module and a power supply switch simulation module. The power supply bus simulation module is used to simulate the voltage and current state of the power supply bus. The power supply switch simulation module is used to simulate the closed state of the power supply switch and affect the power supply state of the corresponding bus.

[0031] Each control cabinet simulation model includes: control logic simulation module, power supply simulation module, communication simulation module, and IO card simulation module. The control logic simulation module is used to simulate the logic operation function of the control cabinet, and the power supply simulation module is used to simulate the power supply function of the control cabinet. The communication simulation module is used to simulate the internal and external communication functions of the control cabinet. The IO card simulation module is used to simulate the input and output functions of the IO card of the control cabinet.

[0032] See also Figure 2The industrial control network simulation model also includes: multiple room-level switch simulation modules and multiple unit-level switch simulation modules. The room-level switch simulation module is used to simulate the communication protocol and communication link of the room-level switch, and the unit-level switch simulation module is used to simulate the communication protocol and communication link of the unit-level switch. For example, the system can simulate the data exchange process and the load of the communication link between the interconnected unit-level switch simulation modules, room-level switch simulation modules and control cabinet simulation models, and display the visualized real-time data transmission status and the communication change process under the switch failure situation.

[0033] The power supply simulation module of each control cabinet simulation model is connected to the power supply bus simulation module of the corresponding power distribution simulation model, each room-level switch simulation module is connected to the communication simulation module of the corresponding control cabinet simulation model, and each unit-level switch simulation module is connected to the corresponding room-level switch simulation module. In this way, the present disclosure can simulate the actual operating state of the data transmission link of the nuclear power industrial control network more realistically by refining the switch category of the industrial control network into unit level and room level, which is helpful to deeply discover the root cause of the network failure.

[0034] In one possible implementation, the system is used to verify the redundant structure; the system includes mutually redundant network topology models, including redundant switch models and redundant communication link models. For example, when the communication link between the control cabinet simulation model and the corresponding room-level switch simulation module is set to fault, the communication function of another redundant communication link between the control cabinet simulation model and the corresponding room-level switch simulation module is verified.

[0035] In one possible implementation, the industrial control network simulation model adopts a hierarchical modeling mechanism, which is divided into a network layer, a node layer, and a process layer. Each layer models and simulates the network topology, node functional composition, and protocol model algorithm. This hierarchical modeling mechanism enables the system to better represent and simulate complex network environments.

[0036] The industrial control network simulation model outputs preset index parameters to each connected control cabinet simulation model, and configures the control cabinet simulation model and the power distribution simulation model to form a preset power distribution simulation (control cabinet simulation model and power distribution simulation model power distribution is normal or faulty), and the index parameters include transceiver throughput, end-to-end delay, packet loss rate, and link bandwidth occupancy rate. The output of the index parameters combined with the power distribution status simulation integrates the two important factors of data flow and power distribution status, and more comprehensively and realistically reflects the real status and performance of the overall network, thereby helping users evaluate and analyze the transmission performance of the industrial control network and the comprehensive impact of the power distribution system status.

[0037] In a possible implementation, a link failure and a node failure are simulated by setting a corresponding control cabinet simulation model, and the change of data flow direction when a failure occurs and when a failure is restored is observed.

[0038] In a possible implementation, the system is formed by taking the following steps:

[0039] Step 1: Integrate each control cabinet simulation model with the corresponding power distribution simulation model, and connect the power distribution simulation model with the power supply information of the corresponding control cabinet simulation model.

[0040] Step 2: In the DCS industrial control network simulation model, set the configuration information of each switch model. The configuration information should be the same as the configuration information of the real object being simulated.

[0041] Step 3: Set the network configuration information of each control cabinet simulation model. The network configuration information should be the same as the configuration information of the real object being simulated.

[0042] Step 4: Connect the configured switch model simulation model through the network. The network topology should be consistent with the real object simulated to form a DCS industrial control network simulation model.

[0043] Step 5: Integrate the simulation models of each control cabinet with the DCS industrial control network simulation model. The network connection topology should be the same as the real object being simulated, forming a simulation system integrating DCS control cabinet, industrial control network and power distribution.

[0044] The present invention is described with reference to specific embodiments, but it will be appreciated by those skilled in the art that various changes and equivalent substitutions may be made without departing from the scope of the present invention. In addition, to adapt to specific occasions or materials of the present invention, the present invention may be modified in many ways without departing from its scope. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all embodiments falling within the scope of the claims.

[0045] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A DCS control cabinet, industrial control network and power distribution system fusion simulation system, characterized in that: The system includes: a plurality of power distribution simulation models, a plurality of control cabinet simulation models and an industrial control network simulation model; Each power distribution simulation model includes: a power supply bus simulation module and a power supply switch simulation module. The power supply bus simulation module is used to simulate the voltage and current state of the power supply bus. The power supply switch simulation module is used to simulate the closed state of the power supply switch and affect the power supply state of the corresponding bus. Each control cabinet simulation model includes: control logic simulation module, power supply simulation module, communication simulation module, and IO card simulation module; the control logic simulation module is used to simulate the logic operation function of the control cabinet, the power supply simulation module is used to simulate the power supply function of the control cabinet; the communication simulation module is used to simulate the internal and external communication functions of the control cabinet; the IO card simulation module is used to simulate the input and output functions of the IO card of the control cabinet; The communication simulation modules of each control cabinet simulation model are respectively connected to the industrial control network simulation model; the power supply simulation module of each control cabinet simulation model is connected to the power supply bus simulation module of the corresponding power distribution simulation model.

2. The system according to claim 1, characterized in that The industrial control network simulation model includes: multiple room-level switch simulation modules and multiple unit-level switch simulation modules. The room-level switch simulation module is used to simulate the communication protocol and communication link of the room-level switch, and the unit-level switch simulation module is used to simulate the communication protocol and communication link of the unit-level switch. Each room-level switch simulation module is connected to the communication simulation module of the corresponding control cabinet simulation model, and each unit-level switch simulation module is connected to the corresponding room-level switch simulation module.

3. The system according to claim 2, characterized in that The system is used to simulate the data exchange process and the load of the communication link between the interconnected unit-level switch simulation modules, room-level switch simulation modules and control cabinet simulation models, and to display the visualized real-time data transmission status and the communication change process under the switch failure situation.

4. The system according to claim 1, characterized in that The system includes a redundant switch model and a redundant communication link model.

5. The system according to claim 4, characterized in that The system is used to verify the redundant structure. When the communication link between the control cabinet simulation model and the corresponding room-level switch simulation module is set to fail, the communication function of another redundant communication link between the control cabinet simulation model and the corresponding room-level switch simulation module is verified.

6. The system according to claim 1, characterized in that The industrial control network simulation model adopts a hierarchical modeling mechanism, which is divided into network layer, node layer and process layer. Each layer models and simulates the network topology, node functional composition and protocol model algorithm.

7. The system according to claim 6, characterized in that By setting up corresponding and control cabinet simulation models in the system to simulate link failures and node failures, the changes in data flow when failures occur and when recovery occurs are displayed.

8. The system according to claim 1, characterized in that The system configures the industrial control network simulation model to output preset index parameters to each connected control cabinet simulation model, and configures the control cabinet simulation model and the power distribution simulation model to form a preset power distribution simulation to demonstrate the transmission performance of the industrial control network and the comprehensive impact of the power distribution system status. The index parameters include receiving and transmitting throughput, end-to-end delay, packet loss rate, and link bandwidth occupancy.

9. The system according to claim 1, characterized in that The following steps are used to generate a DCS control cabinet, industrial control network and power distribution system fusion simulation system: Step 1: Integrate each control cabinet simulation model with the corresponding power distribution simulation model, and connect the power distribution simulation model with the power supply information of the corresponding control cabinet simulation model; Step 2: In the DCS industrial control network simulation model, set the configuration information of each switch model. The configuration information should be the same as the configuration information of the real object being simulated; Step 3: Set the network configuration information of each control cabinet simulation model. The network configuration information should be the same as the configuration information of the real object being simulated; Step 4: Connect the configured switch model simulation model through the network. The network topology should be consistent with the real object being simulated to form a DCS industrial control network simulation model. Step 5: Integrate the simulation models of each control cabinet with the DCS industrial control network simulation model. The network connection topology should be the same as the real object being simulated, forming a simulation system integrating DCS control cabinet, industrial control network and power distribution.

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