OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 2006 · 55 citations · 0 references
EngineeringElectrical EngineeringSystems EngineeringCircuit TheoryEnergy SystemsSystem DynamicsControl TheoryFrequency ControlPower ControlPower Grid AnalysisPower System StabilityStability TheoryAdaptive Controller TuningInverter SystemsLow-frequency OscillationsPower OscillationsRailway Control SystemsRailway Systems EngineeringStability Criterion
Low frequency power oscillations are observed in electric railway systems with high network impedance or when a large number of identical inverter vehicles are fed from a single substation. This phenomenon can lead to operational disturbances. A case-study of Re 450 locomotives in Zurich S-Bahn system with time domain simulations shows improvement by changed controller tuning. However, a suitable stability criterion is an open issue. (orig.)