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

Volume

3

fYear

2003

fDate

23-26 June 2003

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Tech Conference Proceedings, 2003 IEEE Bologna

Print_ISBN

0-7803-7967-5

Type

conf

DOI

10.1109/PTC.2003.1304427

Filename

1304427