Details

Autor(en) / Beteiligte

• Mesbahi, Nadhir
• Monjo, Lluis
• Sainz, Luis

Titel

Study of Resonances in 1 [Formula Omitted] 25 kV AC Traction Systems With External Balancing Equipment

Ist Teil von

• IEEE transactions on power delivery, 2016-10, Vol.31 (5), p.2096

Ort / Verlag

New York: The Institute of Electrical and Electronics Engineers, Inc. (IEEE)

Erscheinungsjahr

2016

Link zum Volltext

Quelle

IEEE Electronic Library (IEL)

Beschreibungen/Notizen

•   AC traction systems are 1 [Formula Omitted] 25 or 2 [Formula Omitted] 25 kV/50 Hz single-phase, nonlinear, time-varying loads that can cause power-quality problems, such as unbalanced or distorted voltages. To reduce unbalance, external balancing equipment is usually connected to these systems, forming the Steinmetz circuit. Parallel resonances can occur in these types of circuits, exciting the harmonic emissions (below 2 kHz) of railway-adjustable speed drives. This paper studies these resonances at pantograph terminals and provides analytical expressions to determine their harmonic frequencies. The expressions are validated from several traction systems in the literature and PSCAD simulations.