Title :
An optimal control strategy for power capacity based on railway power static conditioner
Author :
Wei, Yingdong ; Jiang, Qirong ; Zhang, Xiujuan
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing
fDate :
Nov. 30 2008-Dec. 3 2008
Abstract :
The negative phase sequence (NPS) current, reactive current (VAR) and harmonic current in electrified railway power supply system can be compensated by the railway static power conditioner (RPC). Based on the analysis of NPS current and reactive current decoupling, two control strategies for different objectives priority of RPC applied with asymmetrical transformers is proposed. It makes the PRC achieve the goal of a flexible and independent compensation in accordance with the corresponding power quality standards in railway for three-phase voltage unbalance and power factor drop in traction substation. Then, an optimum algorithm based on power factor priority compensation control strategy is proposed to realize the optimal utilization of the power capacity of PRC.
Keywords :
optimal control; power supply quality; power transformers; railway electrification; static VAr compensators; substations; traction power supplies; asymmetrical transformer; electrified railway power supply system; harmonic current compensation; negative phase sequence current; optimal control strategy; power capacity; power factor drop; power factor priority compensation control strategy; power quality standard; railway power static conditioner; reactive current decoupling; three-phase voltage unbalance; traction substation; Optimal control; Partial response channels; Power quality; Power supplies; Power system harmonics; Rail transportation; Railway electrification; Reactive power; Substations; Transformers;
Conference_Titel :
Circuits and Systems, 2008. APCCAS 2008. IEEE Asia Pacific Conference on
Conference_Location :
Macao
Print_ISBN :
978-1-4244-2341-5
Electronic_ISBN :
978-1-4244-2342-2
DOI :
10.1109/APCCAS.2008.4746004
