Investigation of resonance phenomena in high speed railway supply systems: Theoretical and experimen

Abstract The new Italian high-speed railway lines are characterized by a 2 × 25 kV–50 Hz electrification system that includes different harmonics sources. One of these can be identified in converters included in Uninterruptible Power Supply (UPS) for the supplying of some essential ancillary services located in Fixed Peripheral Points (FPP) and connected to the traction line by means of MV/LV transformers. They bring harmonics in power systems, that can be amplified by resonance phenomena. Other harmonics sources can be identified in drives and auxiliary converters installed onboard the trains. A measurement survey has been performed on one of the new Italian high speed railway lines, pointing out the presence of possible harmonic resonance phenomena. An EMTP-ATP power systems detailed model, already applied for preliminary studies in planning stage, has been used for verifying the existence of pre-defined operational power system assets that involve in harmonics amplification due to resonance phenomena.

[1]  A.M.L. Tortia.  Turin-Milan high-speed railway-line, 2x25 kV 50 Hz AC electrified. EMC problems in earthing of exposed conductive parts , 2006, International Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006..

[2]  Jos Arrillaga,et al.  Computer Analysis of Power Systems , 1990 .

[3]  R. Lamedica,et al.  A measurement campaign on audio frequency track circuits of Italian high speed railway systems , 2006, International Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006..

[4]  E. Pilo,et al.  A simulation tool for the design of the electrical supply system of high-speed railway lines , 2000, 2000 Power Engineering Society Summer Meeting (Cat. No.00CH37134).

[5]  Andrea Mariscotti,et al.  Measurement of the internal impedance of traction rails at audiofrequency , 2004, IEEE Transactions on Instrumentation and Measurement.

[6]  Regina Lamedica,et al.  An Audio Frequency Model of a 2x25 kV Traction Line for High Speed Railway Systems , 2005 .

[7]  N. Golovanov,et al.  Voltage unbalance vulnerability areas in power systems supplying high speed railway , 2005, IEEE Power Engineering Society General Meeting, 2005.

[8]  Mariacristina Roscia,et al.  Current Distortion Evaluation in Traction 4Q Constant Switching Frequency Converters , 2009 .