DocumentCode :
3758199
Title :
The stability research of high-speed railway EMUs and traction network cascade system
Author :
Zhigang Liu;Guinan Zhang;Yicheng Liao
Author_Institution :
School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
fYear :
2015
Firstpage :
123
Lastpage :
128
Abstract :
Due to the voltage low-frequency oscillation (LFO) of high-speed railway traction network and Electric Multiple Units (EMUs) coupling system, many EMUs in different EMU depots appear the traction blockade. First, the mathematical model and small-signal analysis model of EMUs-traction network cascade system (ETNCS) are built. Second, considering Auto-transformer (AT) leakage reactance, traction network impedance and distributed capacitance, the output source module resistance of ETNCS is calculated based on the generalized symmetrical components method (GSCM). With the generalized Nyquist criterion and Bode diagram, the system stability is analyzed and the quantitative indicators of system impedance matching are given. Third, the theoretical analysis and the feasibility of inhibition for LFO are verified using Matlab/simulink simulation platform. Finally, the oscillation signals are respectively analyzed by Fast Fourier Transform (FFT). The proposed stability analysis could be used not only to understand the LFO clearly, but also provide technical reference for the stable operation of high-speed railway1.
Keywords :
"Rail transportation","Impedance","Stability criteria","Mathematical model","Power system stability","Capacitance"
Publisher :
ieee
Conference_Titel :
Electrical Machines & Power Electronics (ACEMP), 2015 Intl Conference on Optimization of Electrical & Electronic Equipment (OPTIM) & 2015 Intl Symposium on Advanced Electromechanical Motion Systems (ELECTROMOTION), 2015 Intl Aegean Conference on
Type :
conf
DOI :
10.1109/OPTIM.2015.7426992
Filename :
7426992
Link To Document :
بازگشت