Power-Hardware-in-the-Loop Emulation of the Low-Frequency Oscillation Phenomenon in AC Railway Networks

作     者：Paul, Frutos-Galarza Guerrero, Juan M. Muniategui-Aspiazu, Iker Vicente-Makazaga, Iban Endemano-Isasi, Aitor Ortega-Rodriguez, David Briz, Fernando 

作者机构：Univ Oviedo Dept Elect Comp & Syst Engn Gijon 33204 Spain Ingeteam Power Technol SA Tract Res & Dev Dept Zamudio 48170 Spain 

出 版 物：《IEEE ACCESS》 (IEEE Access)

年 卷 期：2022年第10卷

页      面：87374-87386页

核心收录：

基　　金：European Commission [UE-18-POWER2POWER-826417] Spanish Ministry of Science, Innovation and Universities [MCIU-19-PCI2019-103490] Government of Asturias [AYUD/2021/50988] 

主　　题：Rail transportation Voltage control Phase locked loops Power supplies Substations Real-time systems Power system stability Oscillators Traction power supplies Hardware-in-the-loop simulation Power grids Low-frequency oscillations resonant stability railway system traction unit railway traction power supply catenary emulator power-hardware-in-the-loop real-time simulation grid-forming voltage source inverter 

摘      要：Dynamic interactions among the AC railway traction network and power electronics converters feeding the trains have been reported to cause low-frequency oscillations (LFO) of the catenary voltage and current. This can result in railway system instability, eventually leading to a power outage and the shutdown of the train traffic. To avoid LFO, control of train power electronic converters must be properly designed and tuned. Experimental verification of control performance regarding the LFO phenomenon in the railway traction network is not easy. Alternatively, the railway traction network can be emulated using a power electronic converter, which would feed the train power converter under test. This paper addresses the design of a network emulator able to reproduce the dynamic behavior of the actual network at low frequencies, including LFO. Three different options will be considered for the network emulator. Their performance will be studied first by means of simulations. Finally, the selected solution will be verified on a downscale test bench.