Title :
Experimental and theoretical investigation of the harmonic distortion in the 600v urban railways system of Athens
Author :
Psomopoulos, C.S. ; Ioannidis, G.C. ; Kaminaris, S.D. ; Angeladas, E.P. ; Tsiolis, S. ; Villiotis, I.
Author_Institution :
Dept. of Electr. Eng., TEI of Piraeus, Egaleo, Greece
Abstract :
In this paper an experimental work regarding power quality in existing dc traction systems is presented and evaluated. The measurements were performed in two substations of the Athens-Piraeus Electric Railways (ISAP), according to the European standard EN 50160 and EN 61000, using 3 wire connection systems. The examined traction system use 600V DC. The main supply systems usually consist of a medium voltage substation feeding a rectifier which provides the dc power supply of the traction motors. The DC power supply is provided using grounded negative bus. The three-phase rectifier (controlled or uncontrolled) produces harmonics induced to the AC network. The measurements were performed in two substations one old with oil insulated transformers and old 12-pulse rectifier and in one recently refabricated with dry type transformers and new rectifier.
Keywords :
harmonic distortion; power supply quality; railways; rectifier substations; substation insulation; traction motors; transformer oil; transformer substations; AC network; Athens urban railway system; Athens-Piraeus Electric Railway substation; DC power supply quality; European standard EN 50160; European standard EN 61000; ISAP substation; dry transformer refabrication; grounded negative bus; harmonic distortion experimental investigation; harmonic distortion theoretical investigation; medium voltage substation; oil insulated transformer; three-phase pulse rectifier; traction motor; wire connection system; Power quality; electricrailways; experimental investigation; harmonic distortion; simulation;
Conference_Titel :
Railway Condition Monitoring (RCM 2014), 6th IET Conference on
Print_ISBN :
978-1-84919-913-1
