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METODA ABSOLUTNIH VOZLIŠČNIH KOORDINAT V DINAMIKI KOMPAKTNEGA VISOKONAPETOSTNEGA DALJNOVODA
ZEMLJARIČ, BORUT (Author), Ažbe, Valentin (Mentor) More about this mentor... This link opens in a new window, Slavič, Janko (Co-mentor)

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Abstract
Zmanjšanje vizualnega vpliva visokonapetostnega daljnovoda v okolju se lahko doseže z uporabo novih, za oko privlačnejših kompaktiranih daljnovodov. Središče raziskovalne problematike je prostorsko modeliranje dinamičnega odziva kompaktiranega daljnovoda, predstavljenega kot gibajočega se sistema med seboj povezanih teles, po nelinearni teoriji dinamike mehanskih sistemov, z uporabo metode absolutnih vozliščnih koordinat, ki je posebej razvita za obravnavo mehanskih sistemov pod vplivom velikih pomikov in deformacij. Izvedena je nadgradnja obstoječega modela dinamičnega obnašanja nadzemnega voda za uporabo absolutnih vozliščnih koordinat, ki izhaja iz enačb posplošenih elastičnih sil Euler-Bernoullijeve teorije nosilcev, ob upoštevanju poljubnega raztezka in/ali ukrivljenosti končnega elementa, kar na podlagi predpripravljenih matrik in vektorjev omogoča bistveno hitrejše izračune dinamike daljnovodnih vrvi, kakor do sedaj. Nadalje je izvedena postavitev celovitega modela daljnovoda v okviru metode absolutnih vozliščnih koordinat za analizo njegovega dinamičnega odziva ter prilagoditev problema vsakodnevni inženirski praksi in uporabi standardnih matematičnih orodij.

Language:Slovenian
Keywords:Daljnovod, Vodnik, Izolacija daljnovoda, Žledenje, Absolutne vozliščne koordinate, Numerične simulacije, Nelinearna dinamika, Končni elementi
Work type:Doctoral dissertation (mb31)
Organization:FE - Faculty of Electrical Engineering
Year:2020
Views:254
Downloads:167
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Secondary language

Language:English
Title:ABSOLUTE NODAL COORDINATE FORMULATION AND THE DYNAMICS OF A COMPACT HIGH-VOLTAGE OVERHEAD POWER LINE
Abstract:
The visual impact on the environment of high-voltage overhead lines can be reduced by using new, more attractive, compact overhead lines. The presented research is focused on the spatial modelling of the dynamic response of a compact overhead line simulated as an interconnected moving mechanical system with nonlinear theory using the absolute nodal coordinate formulation, which is a finite-element method developed for the analysis of large deformations and rotations. The contribution to the state of the art is the upgrading existing absolute nodal coordinate formulation model procedure, where starting from the Bernoulli-Euler beam energy equation for the generalised elastic forces, without restrictions on the strain-bend-displacement relationship, derived equations based on the pre-computed matrices and vectors, results in a much lower computational cost. The second contribution is a complete and mathematically transparent model for a dynamic analysis of the overhead lines, based on the ANCF method. The presented procedure is relatively simple and intuitive for everyday design purposes.

Keywords:Overhead line, Conductor, Insulator assembly, Conductor icing, Absolute nodal coordinateformulation, Numerical simulations, Nonlinear dynamics, Finite elements

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