I. Introduction
Over the years, on the basis of keeping track of the high starting points of new simulation technologies and computer technologies at home and abroad, with openness, Chinese interaction, and user-oriented development goals, in January 2005, a new simulation software platform based on configuration software was introduced. ---FD-Simulator. It adopts a modular mathematical model of full-range, high-precision, high-transparency, and imitation-mechanical processes, and introduces various simulation combinations such as “one machine multimode†and “all-round operator trainingâ€. Emphasis is placed on simulation techniques, training functions, fidelity, ease of use, etc., which make it easier for users to use and maintain the simulator system. No special simulator trainers and maintenance personnel are required. In addition, mobile devices are successfully implemented. Simulation means that the entire simulation system can be well implemented on an ordinary laptop.
Based on the configuration software simulation development platform, in the form of expression is completely a combination of configuration software: Human-machine interface simulation using universal human-machine interface configuration software to achieve, if and the actual project using the human-machine interface configuration software completely In the same way, then there is no problem of human-computer interface simulation, but is exactly the same as the actual, or it can be said that the human-machine interface achieves 100% simulation; because the model configuration and control logic simulation are all used to control the integration of configuration software Design, so the control logic simulation has become relatively simple, only need to translate the control logic, and if you use the same configuration software as the actual project, the control logic also achieves 100% simulation. As a whole, both the developer and the user only need to face a very simple and user-friendly configuration software to complete the development and improvement of the entire simulation system. Control logic and model configuration data can be realized by downloading to the virtual control station to realize the closed loop of the control. In addition, the man-machine interface can realize the simulation of the entire system.
Second, function The function of the simulation platform is achieved through the trainer station. The trainer can control the operation of the simulator through the instructor's desk, monitor the operation of the trainee, and complete the training functions:
[1] Start/stop simulation system, enter/exit simulation process
[2] Initial operating conditions
[3] Operation of freeze/thaw simulation system
[4] Acceleration function: The running speed of the simulation device is 1~4 times faster than the real-time speed.
[5] Deceleration function: The running speed of the simulation device is 1~4 times slower than the real-time speed.
[6] Operating condition display function: The main operating parameters of each unit of the system can be seen on the instructor station and the engineer station, displaying various images, diagrams and curves in the system to monitor and analyze the operation of the unit.
Third, technical performance The performance of simulation technology is mainly reflected in its computer network, server/client, and application software. All the simulation models are based on physical processes and truly reflect the dynamic and static processes within the simulation scope. Therefore, various operations, automatic control and protection actions of the trainees, and dynamic impacts after the occurrence of faults can occur with actual production sites. The process is consistent. The simulation system provides an advanced level of simulation support system. The user can easily modify the structure, parameters, and coefficients of the controlled object model. The control system can also be conveniently configured, modified, and debugged online without programming.
The real-time performance of the simulation system meets the following requirements:
- Fast process model operation step less than 0.1 second/time
- Slow process model operation step is less than 1 second/time
- The update speed of all CRT background pictures is the same as the corresponding CRT picture update speed of the actual power plant. That is to say, any CRT picture can be completely displayed within 2 seconds (or less). The update speed of all displayed data is 1 second.
- The mean time between failures (MTBF) of the emulated system computer server is greater than 8640 hours. System network communication is reliable.
Fourth, technical characteristics - Easy to use the platform
Based on the function block programming method, easy to grasp;
- Transparent model configuration
Graphical model, image; can monitor data changes within the model;
- Easy system commissioning
Data monitoring; online modification of parameters; online modification of models;
- Integration of simulation platform
Completely based on configuration software;
- Control configuration software reconfiguration
You can add components as you like;
- Openness of virtual control station
You can use the mature software developed by third parties directly through dynamic link library.
- High software efficiency
The system occupies less resources on the computer, and it can complete the whole operation simulation system on an ordinary laptop.
V. Hardware Structure The new simulation platform based on configuration software is completely based on the information-based computer network. The entire simulation platform consists of a computer system and a network system. The structure is shown in Figure 1.
Simulation model and man-machine interface server: First, the simulation of the actual DCS control station, I/O modules, and simulation objects is integrated. The main function is the execution of control logic and the calculation of the model, and accepts from the instructor station, engineer station, and The instructions of the operator station perform corresponding actions. Second, real-time data communication between the man-machine interface and the virtual control station is realized, and historical data is stored.
Instructor station: Responsible for the management of the entire simulation system, including start, stop, freeze, unfreeze, storage conditions, call conditions, system acceleration, deceleration, and accident simulation of the simulation system.
Engineer Station: It is used to complete the development, modification, debugging, maintenance and configuration of the model, setting of operation parameters and configuration of the screen.
Operator station: It has exactly the same software as the actual operation screen of the unit. It communicates with the model software on the server and the equipment model on the virtual control station through the network. It also provides the same operation mode as the site to monitor and control the operator station. .