Title :
Stochastic harmonic load flow analysis and distortion mitigation of mass rapid transit systems
Author :
Chuang, H.J. ; Chen, C.S. ; Lin, C.H. ; Shiau, H.M.
Author_Institution :
Dept. of Electr. Eng., Kao Yuan Inst. of Technol., Lu-Chu, Taiwan
Abstract :
This paper investigates the stochastic harmonic distortion of a mass rapid transit (MRT) system by considering the dynamic load behavior of train sets. The mathematical model of 12-pulse uncontrolled rectifiers without interphase transformers has been used in the harmonic load flow analysis to solve the power demand and harmonic current injection for each time snapshot. The stochastic voltage harmonic distortion of each bus is solved according to the speed profiles of all train sets along the main line. Both the passive filters and hybrid filters are designed to reduce the harmonic distortion. The nonlinear programming is used to solve the optimal sizes and locations of harmonic filters so that the harmonic distortion can be alleviated within the specified tolerance.
Keywords :
harmonic distortion; load flow; nonlinear programming; passive filters; power harmonic filters; rapid transit systems; rectifiers; stochastic processes; 12-pulse uncontrolled rectifiers; distortion mitigation; dynamic load behavior; electrified railway power system; harmonic current injection; harmonic distortion reduction; hybrid filters; interphase transformers; mass rapid transit systems; nonlinear programming; passive filters; power demand; stochastic harmonic load flow analysis; train sets; Harmonic distortion; Load flow analysis; Mathematical model; Passive filters; Power demand; Power harmonic filters; Power system harmonics; Rectifiers; Stochastic systems; Transformers;
Conference_Titel :
Power Tech Conference Proceedings, 2003 IEEE Bologna
Print_ISBN :
0-7803-7967-5
DOI :
10.1109/PTC.2003.1304427
