Protection Configuration For Passenger Special Line And Design Of Setting Calculation Software

The safety and reliability of High-speed railway traction power supply system are extremely important to the electrified railway. With the rapid development of railway, the traction power supply of the passenger special line becomes more complex, thus the setting calculation is also becoming more complicated. At present, it is hard to find a practical protection coordination software of traction power supply system. With the development of computer technology, to develop a suitable relay protection setting calculation software of traction power supply system for high-speed railway to improve design efficiency and reduce the workload has become particularly urgent.Based on the actual situation of the High-speed railway traction power supply system, this thesis expounds the need for developing software, the versatility and practicality of the research. According to the basic principles of setting calculation of traction power supply system, this software combines different characteristics of each protection object, takes database as the core, uses the thinking of Object Oriented Programming and modularization technologies, and ultimately carries out the purpose of setting calculation for traction power supply system by computer.This thesis analyses the principles of relay protection, setting and configuration, and also sums up the relay protection configuration scheme and relay protection setting principles for the entirely parallel AT traction power supply system of passenger special line. In accordance with the idea of modular, this thesis analyzes and designs the relay protection setting calculation for modules. Finally, Delphi7 is chosen as a development tool for software development. And on the basis of the analysis of the data structure of traction power supply system setting, SQL Server 2000 is used to design the database of software.Software has friendly man-machine interface, brings the whole set of query results, modifies and prints functions, and has good versatility and scalability.