Title :
Improvement of low-frequency system stability in 50-Hz railway-power grids by multivariable line-converter control in a distance-variation scenario
Author :
Heising, Carsten ; Bartelt, Roman ; Oettmeier, Martin ; Staudt, Volker ; Steimel, Andreas
Author_Institution :
Ruhr-Univ. Bochum, Bochum, Germany
Abstract :
Stability issues are a major concern in railway grids. Although these problems are most experienced in 16.7-Hz applications, low-frequency oscillations also occur in 50-Hz railway grids. In this paper, an advanced multivariable control concept is presented. Beside achieving very good dynamic behavior, the approach improves the introduced stability problem. The proper operation of the control is verified using measurement results. A time domain simulation verifies the stability problem caused by the state-of-the-art control and shows the improved performance of the multivariable control.
Keywords :
multivariable control systems; oscillations; power convertors; power grids; power system stability; railway engineering; time-domain analysis; distance-variation scenario; frequency 50 Hz; low-frequency oscillation; low-frequency system stability; multivariable line-converter control; railway-power grid; time domain simulation; Converters; Oscillators; Pi control; Power system stability; Rail transportation; Stability analysis; Voltage control;
Conference_Titel :
Electrical Systems for Aircraft, Railway and Ship Propulsion (ESARS), 2010
Conference_Location :
Bologna
Print_ISBN :
978-1-4244-9092-9
DOI :
10.1109/ESARS.2010.5665226