A novel control strategy for optimization of power capacity based on railway power static conditioner

The railway static power conditioner (RPC) is used to compensate negative phase sequence (NPS) current, reactive current and harmonic current in electric railway. This paper, based on the decoupling of NPS current and reactive current, presents a novel control strategy which makes the PRC achieve flexible compensation targets for three-phase voltage unbalance and power factor drop in accordance with the corresponding power quality standards in railway. An optimum algorithm based on reactive current priority compensation control strategy is proposed to realize the optimal utilization of the power capacity of PRC. In the following part of the paper, the theoretical analysis is provided and the optimum compensation performance is verified by the simulation results in various track loads conditions.

[1]  T. Miyashita,et al.  Static power conditioner using GTO converters for AC electric railway , 1993, Conference Record of the Power Conversion Conference - Yokohama 1993.

[2]  J. Yoshizawa,et al.  Development of railway static power conditioner used at substation for Shinkansen , 2002, Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579).

[3]  Peter Wolfs,et al.  Novel topology for correction of unbalanced load in single phase electric traction systems , 2002, 2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289).

[4]  Tetsuo Uzuka,et al.  RAILWAY STATIC POWER CONDITIONER FIELD TEST , 2004 .

[5]  Tetsuo Uzuka,et al.  A static voltage fluctuation compensator for AC electric railway , 2004, PESC 2004.