PCTran/AP1000 improved nuclear power plant simulation software

Study: Pan Yu Xi Li Deyi Li Zheng Wang Kai soup Lexus

Abstract: This paper introduces PCTran/AP1000 nuclear power plant simulation software distributed by the stand-alone training system to improve the control achieved through the WinSock based TCP / IP protocol network communication. The system can meet the core requirements of experimental teaching classes for nuclear power plant operators to improve the cognitive level of play a positive role.

Abstract: This paper introduces a improvement of the PCTran/AP1000 simulation software, making it from a stand-alone version to a distributed training system one. Through the WinSock control, it can realize the network communication function based on TCP / IP protocol. The system can meet the experimental education requirements of the nuclear science major and help the operators of nuclear power plants to improve their cognitive level positively.

Keywords:: PCTran, AP1000, a distributed training system
Keywords:: PCTran; AP1000; distributed training system
1 PCTran/AP1000 Introduction
PCTran/AP1000 U.S. Micro-Simulation Technology (MST) developed in 1985 applicable to AP1000 power plant severe accident simulation and analysis of small software. It is a personal Computer through the reactor transient and accident control of the simulation software. PCTran early mainly compiled FORTRAN language, and later Windows as Microsoft's popular Windows platform, have changed into a Windows version. its early analysis of only a few simple modules, only a simple user interface is also output. then gradually increased the number of modules, operator interface is a simple DOS interface from the early to today's Windows graphical user interface (GUI). since its inception, MST has developed multiple versions for different reactor types PCTran software. However, due to our active duty and planning to build nuclear power plants were powered by the inverted U-mature PWR reactor type evaporator, so here presented and discussed mainly on the nuclear power plant software PCTran/AP1000 accidents that may occur simulation and analysis, resulting in the accident more rapid and rational prediction, can also be used to evaluate the reference nuclear power plant accident analysis for the absorption and mastery of foreign Technology to provide a basis for advanced pressurized water reactor.

2 PCTran/AP1000 software, shortcomings and deficiencies
�� can not simulate the evaporator water piping rupture accident, can not accurately reflect the evaporator by a large impulse in the dynamic response time, not in the running process parameters such as real-time adjustment, �� system scalability is another important indicator of software design. A good software system designed not only to achieve the function of the beginning of the book, but also the realization of the remaining functions can be reserved for a certain room for expansion. As PCTran data and modules within the package, making it impossible from the outside to access the data directly, Therefore PCTran scalability is not good. Meanwhile, PCTran not modular design, but also for functional improvement and expansion of the system made it difficult, �� PCTran current stand-alone software can only be run on all the initial conditions fault simulation parameters and the parameters set by the users themselves, is not conducive to training users to judge the reasons for failure and response capacity.

Lack of improvement of the above: As ��, �� point is PCTran/AP1000 software inherent shortcomings, we can not change its internal parameters, in which only make the improvement program for the third point, that PCTran/AP1000 distributed training system.

The software features are: by the coaches (training teachers select the type of fault on the server side or the initial operating parameters and sends the client side, when the client-side program receives data from the background, start PCTran/AP1000 nuclear power plant simulation software , the operating conditions of the transient data will be changed accordingly, the client-side participants (trainees do not know in advance the case of fault type, transient data according to the changes and run the various changes in trends for fault analysis and determine the fault type, and reset the appropriate operating parameters to achieve the purpose of troubleshooting.

Coaches can monitor the operation of students and to give guidance and evaluation. In a LAN environment, a server can take at least 50 clients, to meet the training requirements.

3 describes the system functional design
The software features are: first by coaches (training teachers to open the server-side monitoring program, students log on the client side, coaches can be logged on the server side to see the students information (name, student number and IP address. Coach Members select the type of fault on the server side or the initial operating parameters and sent to the students through the network where the client side, when the client-side program receives data from the server, start the local nuclear power plant PCTran/AP1000 simulation software, PCTran in accordance with the coaches specified initial conditions and the fault type operation, the operation of the interface will be a corresponding change in the transient data, students run the transient data according to changes and variations in fault trend analysis and determine the fault type, and to take re- set the appropriate operating parameters to achieve the purpose of troubleshooting.

Links to Research Papers Download http://www.hi138.com 3.1 server-side module design
The main function of the server module is: �� parameters. By the user to set the port number and client side network communications, the path of the database file can be set to run from the database access PCTran initial condition parameter data and fault type . �� Run the initial conditions set. PCTran initial conditions is to define the operating conditions of simulated data of a stable set. In addition to the software provided to the user when using the first five initial conditions can not be changed, other initial conditions set by the users themselves. This feature may be the initial conditions coaches and save the data set. �� student login information view. server-side program is running, continue to monitor sent from the client-side information, if it is login, put the student name, student number, the client IP address appears on the list of programs on the server side, if the client exits the system, then the corresponding student information is automatically removed from the list. �� fault type selection and send the initial condition. server-side Running the program will automatically read the fault types from the database (20 species and the initial conditions of the existing data and were displayed in the drop-down list box and tables for coach selection. When the coaches selected a type of fault and an initial condition, you can click on the "Startup Programs" to send data to the selected students to the client.

3.2 The client-side module design
Client-side module's main function is: �� parameters. By the user to set the server IP address and port number to the client side network communications, the path of the database file can be set to pre-set PCTran database data and initial conditions fault type and other parameters. �� login server. Participants in the login screen, enter their name, student number and click "Login" button, you can name, student number and the IP address of the client with data to send to the server. �� fault type and the beginning of the beginning of conditional access and run PCTran. When the server receives the information came after the operating parameters (including the fault type, the initial conditions, suggesting that students are running on this machine PCTran program, the participants confirmed the system automatically sets the machine PCTran before the initial conditions in the database data and fault type and other parameters, then automatically start PCTran simulated nuclear power plant operation.

4 Conclusion
Nuclear power plant severe accident simulation and analysis is an important Research direction in nuclear power, nuclear power plants based on common Computer simulation software developed by the world's attention. PCTran this paper as a model for the AP1000 nuclear power plants can be used in PC simulation software analysis and Research, and lack of design and development for PCTran a distributed training system and the local area of ​​the system debug environment.

Due to time constraints, the training system where there are not perfect, the future can further improve system stability and some additional relevant features such as: training data, student records (records of the student training time, fault type and initial conditions, the participants scores.

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