The Development Of The Basic Framework Of Electrified Railway Traction Power Supply System Simulation Teaching System

High-speed railway in our country is in the stage of high-speed construction and high-speed development, and a variety of planned new line have also been put into operation, greatly facilitates the public transport and freight. Ensuring the safety,steadiness and dependability of traction power supply system is a key factor to ensure reliable operation of the high-speed railway.The construction of the simple imitating of traction power supply system can provide colleges and universities teachers and students with an intuitive observation platform, visualize the theoretical book knowledge to understand,enrich the forms of learning for teachers and students. At present, the imitating of the traction power supply system is still basically limitied in the simulation system, which can be complementary with the construction of the simulation platform.On hardware The system adopts special metering chip ATT7022 E measurement of traction transformer primary side current phase Angle of Voltage effective value,current effective value and other parameters. MSP430F149 selected as master control chip, MSP430 via a serial port to read ATT7022 E of voltage, current, the phase of data gathered and then transmitted to the PC, read real-time data and traction transformer primary side A, B, C three phase current waveform graph. Besides, also analyzed the periphery of the chip circuit system, including the power supply module,data storage module, sampling and conditioning circuit, serial communication module,etc. Software also adopted the modular design method, including software timing module, Serial connection communication module, etc. PC software uses the LabVIEW graphical programming language to carry on the design, including the voltage and current phase angle data collection, current sampling data storage, the formation of current waveform figure, making the show more intuitive.