Original scientific paper
https://doi.org/10.37798/202069229
RAILWAY SYSTEM IMPACT ON VOLTAGE QUALITY AT THE LEVEL OF THE CROATIAN TRANSMISSION NETWORK
Denisa Galzina
; Croatian Transmission System Operator Ltd.
Eraldo Banovac
; Croatian Energy Regulatory Agency
Tomislav Tomiša
; Faculty of Electrical Engineering and Computing
Abstract
Railway systems are single-phase loads, connected to two-phase of the three-phase supply network. Therefore, they negatively affect the voltage
quality, primarily the voltage unbalance. In addition to voltage unbalance, railway systems inject current harmonics into the network due to controllable
diode or thyristor drives used to operate the train.
The paper gives a short theoretical description of the harmonic distortion and the voltage unbalance as well as the results of the voltage quality
measurement. Moreover, the paper shows the impact of the railway system on the transmission network in the case that the facilities are connected
to the 110 kV voltage level.
Keywords
Railway system, voltage quality, voltage harmonics, voltage unbalance
Hrčak ID:
247121
URI
Publication date:
18.6.2020.
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