Conference Paper

Harmonic and balance compensation using instantaneous active and reactive power control on electric railway systems

Grupo de Sist. Ind. de Electron. de Potencia, Univ. Simon Bolivar, Caracas, Venezuela
DOI: 10.1109/APEC.2010.5433358 Conference: Applied Power Electronics Conference and Exposition (APEC), 2010 Twenty-Fifth Annual IEEE
Source: IEEE Xplore

ABSTRACT This work presents a general filtering and unbalance compensation scheme for electric traction systems. The proposed method uses an active filter controlled with the instantaneous active and reactive power, to reduce the harmonic current distortion and the negative sequence obtained by the system under unbalanced operation in steady state. The proposed filter is evaluated using open delta (V-V) and Scott transformers in the power substation. The scheme has been simulated and experimentally validated. Experimental and simulation results show the controller advantages and the applicability of the proposed method in railway systems.

0 Bookmarks
 · 
240 Views
  • [Show abstract] [Hide abstract]
    ABSTRACT: For power quality in V/V traction system of the 350-km/h high-speed railway, a kind of railway static power conditioner (RPC) is discussed, which is used to carry out the comprehensive compensation of negative sequence and harmonic currents in the traction substation. In order to improve the control effect and performance of RPC, a dual-loop control strategy is constructed for RPC. Taking into account the disturbance and variation of electrified railway environment, a recursive proportional-integral control based on fuzzy algorithm is adopted to realize a fast and smooth tracking to the reference current. An energy-balance control is proposed to suppress the fluctuation of dc-link voltage and maintain the stability of RPC, which is an accurate and adaptive feedback control based on corresponding parameters. Finally, the correctness of the analysis proposed in this paper has been confirmed by the simulation and experiment results.
    IEEE Transactions on Power Electronics 08/2011; · 5.73 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: ELECTRIC traction is considered one of the most widely used means of transportation because of its advantages such as being economical, environment friendly etc. Indian Railways has been using electric traction fed by 25kV single-phase AC supply obtained from three phase utility. This paper analyses the harmonic issues of the electric traction system by measuring voltage, current and harmonics at different traction substations. A passive harmonic LC filter is designed to filter out the prominent harmonics in the system.
    01/2011;

Full-text (2 Sources)

Download
98 Downloads
Available from
Jun 3, 2014