Daljinsko ozemljevanje voznega omrežja Slovenskih železnic

• Main Author: BRELIH, TADEJ
• Other Authors: Mihalič, Rafael
• Format: Bachelor Thesis
• Language: Slovenian
• Published: 2021
• Subjects: elektronapajalna postaja; stabilne naprave električne vleke; sistem daljinskega vodenja in nadzora; ozemljilna stikala; sub-station; stable devices for electric traction; remote supervision and control system; earthing switches; sami
• Online Access: https://repozitorij.uni-lj.si/IzpisGradiva.php?id=126161; https://repozitorij.uni-lj.si/Dokument.php?id=142050&dn=

Diplomsko delo obravnava tematiko izdelave načrta krmilne omare ozemljilnih stikal, za potrebe daljinskega ozemljevanja voznega omrežja (v nadaljevanju VO) Slovenskih železnic (v nadaljevanju SŽ). Vsebinski del diplomske naloge je razdeljen na dva dela. V prvem delu so opisane stabilne naprave električne vleke (v nadaljevanju SNEV), ki napajajo vozno omrežje. Opisan je tudi sistem daljinskega vodenja in nadzora SNEV. V drugem delu je predstavljeno načrtovanje krmilne omare ozemljilnih stikal, z vsemi bistvenimi elementi za vključitev ozemljilnega stikala v sistem daljinskega vodenja SNEV. Opravljen je preračun kabelskih povezav, ter koordinacija zaščit, katera sta neizbežna pri načrtovanju oziroma projektiranju elektro omar, ter s tem zagotavljanju varnosti ob okvarah za sisteme, kot za človeka. Namen diplomske naloge je prikazati, kako zagotoviti najbolj varno izvajanje delovnih procesov, ter prikazati primer učinkovitega ukrepanja v primerih izrednih dogodkov. Diplomska naloga temelji na primeru elektronapajalne postaje (v nadaljevanju ENP) Ptuj, kjer se je vgradil sistem za daljinsko ozemljevanje voznega omrežja. Za zagotavljanje daljinskega vodenja in nadzora smo v krmilno omaro ozemljilnih stikal vgradili računalnik polja CAU331, ki je preko komunikacijskih povezav povezan v Center vodenja stabilnih naprav električne vleke (v nadaljevanju CV SNEV). Vozno omrežje se tako lahko zanesljivo ozemlji iz Centra vodenja SNEV. S tem se je poenostavil in pohitril postopek ozemljevanja VO s palicami, ki so jih lahko pred tem fizično namestili samo usposobljeni delavci SŽ. Ozemljilna stikala se nahajajo v zunanjem 3 kV stikališču na drogu voznega omrežja ob ENP. Krmilna omara ozemljilnih stikal z napravo daljinskega vodenja in nadzora je vgrajena v notranjost ENP. Na sami krmilni omari ozemljilnih stikal so nameščene naprave za lokalno vodenje in nadzor ozemljilnega stikala. Povezava med krmilno omaro ozemljilnih stikal in z ozemljilnimi stikali, za zagotovitev daljinskega krmiljenja in signalizacije, je izvedena s energetskimi / signalnimi kabli. The thesis deals with the topic of making a plan, of the control enclosure of earthing switches, for the needs of remote earthing of the catenary for the Slovenske železnice (hereinafter SŽ). The content of thesis is divided into two parts. The first part describes the stable devices for electric traction (hereinafter SDET) which supply the catenary. Remote supervision and control system SDET is described. The second part presents the design of the control enclosure of earthing switches, with all the essential elements for the inclusion of the earthing switch in the remote supervision and control system SDET. The cable sizing is performed, as well as protective devices coordination, which are unavoidable steps in the planning or design of electrical enclosure, and thus ensuring safety in the event of failures for systems as for humans. The purpose of thesis is to show how to ensure the safest implementation of work processes, and to show an example of effective measures in cases of emergencies. Thesis is based on the example of the sub-station (hereinafter SS) Ptuj, where a system for remote earthing of catenary was installed. To ensure remote control and monitoring, a CAU331 bay computer was installed in the control enclosure of the earthing switches, which is connected to the Control center of stable devices for electric traction (hereinafter RC SDET) via communication links. Catenary can thus be reliably grounded from the Control center of stable devices for electric traction. This simplified and accelerated the process of grounding catenary with sticks, which could previously only be physically installed by trained SŽ workers. The earthing switches are located in the external 3 kV switchyard on the catenary pole, next to the SS. Control enclosure of the earthing switches with the control acquisition unit, is built into the interior of the SS. The connection between the control enclosure of the earthing switches and the earthing switches, in order to provide remote control and signaling, is made with power / signal cables.