Naslov
Modelling of 25 kV Electric Railway System for Power Quality Studies

Autori
Župan, Alan ; Tomasović Teklić, Ana ; Filipović- Grčić, Božidar

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
IEEE Eurocon 2013 Conference / Igor Kuzle, Tomislav Capuder, Hrvoje Pandžić - Zagreb : Institute of Electrical and Electronics Engineers (IEEE), 2013, 844-849

ISBN
978-1-4673-2231-7

Skup
IEEE Eurocon 2013 Conference

Mjesto i datum
Zagreb, Hrvatska, 01.07.2013. - 04.07.2013

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Electric Railway System ; Power Quality ; Modeling ; Measurement

Sažetak
The 25 kV 50 Hz single-phase AC supply has been widely adopted in the long-distance electrified railway systems in many countries. The electrical locomotives generate harmonic currents in railway power supply systems. The single-phase traction loads also inject large unbalance currents to the transmission system and cause voltage unbalance subsequently. As the amount of rail traffic increases, the issue of power quality distortion becomes more critical. Harmonic currents and unbalanced voltages may have negative effects on the components of the power system such as overheating, vibration and torque reduction of rotating machines, extra loss of lines and transformers, interference with neighboring communication systems, malfunctions of protection relays and measuring instrument error, etc. Therefore, the harmonic current flow must be assessed exactly in the designing and planning stage of the electric traction system. Since the harmonic current flows through the catenary system, it needs to be accurately modeled to analyze and assess the harmonic effect on the transmission system. This paper describes the influence of electric railway system on power quality in 110 kV transmission system. Locomotives equipped with diode and thyristor rectifier circuits were analyzed. Electric railway system was modeled in detail using EMTP-RV software. Currents and voltages were calculated in 110 kV and 25 kV network. Power quality measurements were performed on 110 kV level in 110/35/25 kV substation and compared to IEC 61000-3-6.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA