Unified AC/DC power flow for system simulation in DC electrified transit railways

Author

Tzeng, Y.-S. ; Wu, R.-N. ; Chen, N.

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Inst. of Technol., Taipei, Taiwan

Volume

142

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

345

Lastpage

354

Abstract

The paper presents the improvements of a commercially available train simulator, the Energy Management Model (EMM), to evaluate the power flows in DC electrified transit railways. The sequential Gauss-Seidel power flow program used in EMM has been replaced by a unified Newton-Raphson AC/DC power flow to speed up the calculations. A precise model of the uncontrolled bridge rectifier with commutation impedance has been applied to the power flow formulation. Effects of regenerative braking on rectifier operations are also taken into account. Both the improved and the original train simulators have been tested on the Blue Line of Taipei Rapid Transit System which is under construction. Simulation results show that the proposed power flow program, with excellent convergence characteristics and accuracy, is of great value for train simulation

Keywords

Newton-Raphson method; bridge circuits; commutation; digital simulation; distribution networks; electric impedance; load flow; power system analysis computing; railways; rapid transit systems; rectifying circuits; regenerative braking; Blue Line; DC electrified transit railways; Energy Management Model; Newton-Raphson AC/DC power flow; Taipei Rapid Transit System; commutation impedance; convergence characteristics; regenerative braking; train simulation; uncontrolled bridge rectifier; unified AC/DC power flow;

fLanguage

English

Journal_Title

Electric Power Applications, IEE Proceedings -

Publisher

iet

ISSN

1350-2352

Type

jour

DOI

10.1049/ip-epa:19952159

Filename

488198