Izračun kazalnikov stanja nadzemnih vodov

Iveta, Matko (avtor), Pantoš, Miloš (mentor)

Visokonapetostni nadzemni vodi so ključni del elektroenergetskega sistema, njihovo stanje pa se zaradi staranja materiala ter obratovalnih in okoljskih obremenitev postopno slabša. Za podatkovno podprto in učinkovito vzdrževanje se uporablja kazalnik stanja sredstev, ki kvantitativno poveže rezultate pregledov, meritev in evidenc okvar v enotno, primerljivo oceno trenutnega stanja ter preostale življenjske dobe opreme. Razvoj standardizirane metodologije za izračun kazalnika stanja daljnovodov je zahteven, ker gre za obsežno linearno infrastrukturo z medsebojno odvisnimi komponentami v raznolikih okoljih. Enotna metodologija doslej še ni uveljavljena, zato je raziskava na tem področju utemeljena. V podjetju ELES, ki upravlja z več kot 3000 km daljnovodov in deluje skladno s standardom za upravljanje s sredstvi ISO 55001, obstaja potreba po sistematičnem kazalniku stanja za objektivno, na podatkih utemeljeno odločanje o aktivnostih na daljnovodih. Magistrsko delo se osredotoča na razvoj metodologije za izračun kazalnika stanja nadzemnih vodov, prilagojene trenutno razpoložljivim vhodnim podatkom družbe ELES. Najprej so pregledani domači in mednarodni pristopi, smernice ter dobre prakse prenosnih operaterjev. Sledi podrobna analiza komponent daljnovoda in njihovih mehanizmov staranja, na podlagi katere so izbrani ustrezni modeli staranja. Predlagana metodologija izračuna obsega tri module, prvi z modeli staranja kvantificira vpliv starosti ter upošteva delne in celostne obnove, drugi ovrednoti ugotovitve terenskih pregledov, tretji pa kvantificira okoljske obremenitve. Delne kazalnike modulov uteženo združimo v enotno oceno stanja na ravni daljnovoda. Metodologija je preizkušena na podatkih ELES-ove infrastrukture. Predlagana metodologija omogoča objektivno ocenjevanje stanja daljnovodov in transparentno določanje prioritet investicijskih vlaganj ter podpira prehod s časovno načrtovanega preventivnega vzdrževanja na vzdrževanje glede na dejansko tehnično stanje. Delo prinaša tudi konkretne predloge za nadgradnje, med drugim prehod ocenjevanja na raven odsekov ter vključitev naprednih metod spremljanja stanja za učinkovitejše upravljanje sredstev.

• Jezik: Slovenski jezik
• Ključne besede: kazalnik stanja, visokonapetostni daljnovodi, upravljanje s sredstvi, vzdrževanje
• Vrsta gradiva: Magistrsko delo/naloga
• Tipologija: 2.09 - Magistrsko delo
• Organizacija: FE - Fakulteta za elektrotehniko
• Leto izida: 2026
• PID: 20.500.12556/RUL-178267
• COBISS.SI-ID: 265862659
• Datum objave v RUL: 22.01.2026

Sekundarni jezik

• Jezik: Angleški jezik
• Naslov: Calculation of condition indicators of overhead lines

Izvleček

High-voltage overhead transmission lines are a key element of the power system, and their condition gradually deteriorates due to ageing as well as operational and environmental stresses. To enable data-driven and efficient maintenance, asset health indices are used, which quantitatively combine inspection results, measurements and failure records into a single, comparable assessment of the condition and remaining service life of the equipment. Developing a standardised methodology for calculating the health index of transmission lines is challenging, since these assets form an extensive linear infrastructure system with interdependent components operating in diverse environments. A uniform methodology has not yet been established, which justifies further research in this area. At ELES, the Slovenian transmission system operator, which manages more than 3000 km of transmission lines and operates in accordance with the ISO 55001 asset management standard, there is a need for a systematic health index to support objective, data-driven maintenance decision making. This master’s thesis focuses on the development of a methodology for calculating the health index of overhead transmission lines, tailored to the needs of ELES. First, domestic and international approaches, guidelines and good practices of transmission system operators are reviewed. This is followed by a detailed analysis of transmission line components and their ageing mechanisms, based on which suitable ageing models are selected. The methodology comprises three modules, the first uses ageing models, the second evaluates the findings of field inspections and the third quantifies environmental loads. The partial indices of the modules are combined using weights into a single health index at the level of each transmission line. The methodology is demonstrated on data from ELES’s infrastructure. The proposed methodology enables objective assessment of transmission line condition and transparent prioritisation of maintenance, and supports the transition from time-based to condition-based maintenance. The thesis also provides recommendations for future enhancements, including shifting the assessment to the level of line sections and integrating advanced condition monitoring methods to support more effective asset management.

• Ključne besede: health index, high-voltage overhead lines, asset management, maintenance