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Nadgradnja naprave za sprotni nadzor obremenljivosti nadzemnih elektroenergetskih vodov
ID BIZJAK, MARTIN (Author), ID Mihalič, Rafael (Mentor) More about this mentor... This link opens in a new window

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Abstract
Z deregulacijo trga električne energije, povečanjem meddržavne izmenjave, uvajanjem obnovljivih virov in razpršene proizvodnje, postaja dinamični nadzor (ang. Dynamic line rating - DLR) pretoka energije nujen del celotnega sistema. Ta sistem omogoča maksimalno izkoriščenost (prenosno zmogljivost) obstoječih in novih daljnovodov, ter varno in zanesljivo obratovanje. Ključni parameter, ki vpliva na obvladovanje pretoka energije in s tem na zmogljivost daljnovoda, je temperatura vodnika. Pri višjih temperaturah in zimskih bremen se vodniki daljnovoda povešajo in lahko presežejo dopustno varnostno višino. Namen diplomske naloge je podati nekaj novih tehnologij, katere bi omogočale učinkovitejši nadzor nad prenosnimi zmogljivosti daljnovoda in pripomogle k zagotavljanju predpisane varnostne višine še posebej v ekstremnih pogojih. Dodatno škodo na električnem vodu lahko povzročijo izredne zimske vremenske razmere, ko se na vodnikih oblikuje žled. Za zagotavljanje neprekinjene distribucije električne energije, je potrebno učinkovito vzdrževanje in spremljanje stanja električnih vodov. Februarja 2014 je žledolom v Sloveniji povzročil izjemno veliko škodo na elektroenergetskem prenosnem omrežju vseh napetostnih nivojev. Poškodovanih je bilo večje število daljnovodnih stebrov, na nekaterih področjih pa so bili uničeni celotni odseki daljnovodov. Integracija nadzora oddaljenih posnetkov v realnem času (neke vrste videonadzor) v obstoječo infrastrukturo električnih vodov bi nam omogočala identifikacijo nastajanja žledu. Tako bi lahko pravočasno ukrepali ter preprečili poškodbe sistema ter prekinitve dobave električne energije. Za diplomsko nalogo sem sistem OTLM nadgradil s kamero in s tem omogočil, da sistem OTLM pri analizi stanja vodnika upošteva tudi realno sliko okolice. Tak pregled omogoča dodatno in natančnejšo analizo, natančnejši pregled trase voda in njegovih posameznih komponent na težko dostopnih mestih.

Language:Slovenian
Keywords:monitoring, nadzemni vod, daljnovod, dinamična zmogljivost vodov, žled, termična obremenljivost, poves, OTLM SMART
Work type:Bachelor thesis/paper
Organization:FE - Faculty of Electrical Engineering
Year:2019
PID:20.500.12556/RUL-110194 This link opens in a new window
Publication date in RUL:12.09.2019
Views:1472
Downloads:231
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Secondary language

Language:English
Title:Upgrading of device for on-line overhead transmission line monitoring
Abstract:
With deregulation of square power, interconnection, introduction of renewable sources in diffuse production, the dynamic line rating (DLR) is a necessary part of the whole system. System like this, allows maximum use (ampacity) of existing and new overhead lines with safe and reliable operation. The key parameter affecting the managing of energy flow and ampacity is the temperature of the conductor at heating or cooling. At higher temperatures and winter loads, the lines of the transmission line connect and can reach the permissible safety height. Purpose of the degree dissertation is to present new technologies that would enable more efficient control over ampacity of the transmission line and help to ensure prescribed safety height, especially in extreme conditions. Extra damage to the power lines can be caused by extreme winter weather conditions when icing is formed on conductors. Effective maintenance and monitoring of power lines is required to ensure uninterrupted distribution of electricity. In February 2014, extreme icing in Slovenia caused big damage to the electricity network of all voltage levels. A large number of overhead lines were damaged and entire sections of overhead lines were destroyed in some areas. The integration of real-time monitoring (like video surveillance) into the existing power line infrastructure would allow us to identify the formation of icing. This would prevent damage to the system and interruption of electricity supply. For my degree dissertation, I upgraded the OTLM system with a camera, enabling the OTLM system to take real time pictures of the conductor. This allows additional and more accurate analysis, more precise examination of lines and its individual components on difficult to reach places.

Keywords:monitoring, overhead lines, transmission lines, dynamic line performance, icing, thermal load, sag, OTLM SMART

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