Stručni rad

https://doi.org/10.19279/TVZ.PD.2023-11-1-08

SWITCHGEAR OWNED BY HŽ INFRASTRUKTURA

Robert Jakupanec orcid.org/0009-0003-1514-1551 ; HŽ Infrastruktura, Ulica kneza Branimira 9a, Zagreb, Hrvatska
Krešimir Meštrović ; Tehničko veleučilište u Zagrebu, Elektrotehnički odjel, Konavoska 2, Zagreb, Hrvatska

Sažetak

The voltage range used by Croatian Railway infrastrukture is from 12 V DC to 110 kV 50 Hz AC, therefore a wide range of switching equipment is required. Within the view of the power system, the most important is the switching equipment used to power the contact network (CN). High-voltage and medium-voltage switches and disconnectors are used inside electric traction substations (ETS) that transform the voltage AC 110 kV 50 Hz to the voltage AC 25 kV 50 Hz used by electric locomotives and trains. Within the range supplied by one traction substation there are also a number of sectioning plants (SP) containing switching equipment so that the catenary network can be separated into several sections. Inside electric traction substations and sectioning plants there is a series of relay protections that serve to protect the equipment in case of failure. The railway industrial complex has been neglected for many years and parts of the switchgear have been operating since the 1970s, but with the new projects Croatian Railway could be brought up to European standards.

Ključne riječi

Switchgear; Croatian railway infrastructure; high-voltage and medium-voltage switches; electric traction substations

Hrčak ID:

300960

URI

https://hrcak.srce.hr/300960

Datum izdavanja:

13.2.2023.

Posjeta: 759 *