Kombineeritud 330 kV ja 110kV õhuliinide rakendamise analüüs
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Kuupäev
2026
Kättesaadavus
Suletud / Closed, korraldus nr. 6-1.MI/201
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Eesti Maaülikool
Abstrakt
Töös käsitletakse 330 kV ja 110 kV õhuliinide tehnilisi erisusi, kombineeritud mastilahendusi ning elektromagnetilisi mõjusid. Mehaanika analüüsi käigus hinnatakse juhtmete ripet, montaažjõude, jää- ja tuulekoormusi ning nende mõju kombineeritud mastikonstruktsioonidele. Lisaks võrreldakse kombineeritud ja eraldiseisvate liinide trassikoridori vajadust, maakasutust ning mastide ja vundamentide hinnangulist maksumust.
Analüüsi tulemused näitavad, et kombineeritud 330/110 kV lahendus võimaldab vähendada trassikoridori laiust, mastide arvu ning täiendava raadamise vajadust. Samuti väheneb maakasutuse mõju võrreldes eraldiseisvate paralleelliinidega. Kuigi kombineeritud mastid on konstruktsiooniliselt keerukamad ja suuremate mehaaniliste koormustega, osutus lahendus kogu projekti ulatuses tehniliselt teostatavaks ning majanduslikult põhjendatuks.
This master’s thesis analyses the application of combined 330 kV and 110 kV overhead lines based on the reconstruction project of the L357 Paide–Kiisa transmission line section. The aim of the thesis is to evaluate the technical and economic feasibility of a combined overhead line solution compared to separate parallel transmission lines. The thesis examines the technical characteristics of 330 kV and 110 kV overhead lines, combined tower solutions, and electromagnetic interactions. The mechanical analysis includes conductor sag, stringing tensions, ice and wind loads, and their effects on combined tower structures. In addition, the study compares the required transmission corridor width, land use, and estimated costs of towers and foundations for combined and separate line solutions. The results of the analysis indicate that the combined 330/110 kV solution reduces the required transmission corridor width, the number of towers, and the need for additional forest clearing. Furthermore, the impact on land use is lower than that of separate parallel transmission lines. Although combined tower structures are mechanically more complex and subjected to higher loads, the solution proved to be technically feasible and economically justified for the analysed project section.
This master’s thesis analyses the application of combined 330 kV and 110 kV overhead lines based on the reconstruction project of the L357 Paide–Kiisa transmission line section. The aim of the thesis is to evaluate the technical and economic feasibility of a combined overhead line solution compared to separate parallel transmission lines. The thesis examines the technical characteristics of 330 kV and 110 kV overhead lines, combined tower solutions, and electromagnetic interactions. The mechanical analysis includes conductor sag, stringing tensions, ice and wind loads, and their effects on combined tower structures. In addition, the study compares the required transmission corridor width, land use, and estimated costs of towers and foundations for combined and separate line solutions. The results of the analysis indicate that the combined 330/110 kV solution reduces the required transmission corridor width, the number of towers, and the need for additional forest clearing. Furthermore, the impact on land use is lower than that of separate parallel transmission lines. Although combined tower structures are mechanically more complex and subjected to higher loads, the solution proved to be technically feasible and economically justified for the analysed project section.
Kirjeldus
Magistritöö
Energiakasutuse õppekaval
Märksõnad
magistritööd, kombineeritud õhuliin, 330 kV, 110 kV, tehnilis-majanduslik analüüs, mastikonstruktsioon, õhuliinide mehaanika, elektromagnetilised mõjud, trassikoridor