Mehanički proračun vodiča nadzemnog voda

undergraduate thesis

• Title (english): Mechanical calculation of overhead line conductors
• Author: Dario Markić
• Mentor: Ivica Pavić (mentor)
• Committee member: Ivica Pavić (predsjednik povjerenstva)
• Committee member: Frano Tomašević (član povjerenstva)
• Committee member: Goran Grdenić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2015-09-01, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

U uvodnom izlaganju definirani su svi elementi koji direktno i indirektno utječu na sami
postupak proračuna, kao što su vertikalne i horizontalne sile, utjecaj temperature na vodiče
nadzemnih vodova, te drugi bitni pojmovi koji se tiču same konstrukcije i dimenzioniranja
voda.
Nakon što je utvrđeno na koje sve osnovne pojmove treba obratiti pozornost, obrađen je
proračun provjesa metodom lančanice, te metodom parabole. Iz dobivenih rezultata može
se zaključiti kako proračun preko parabole neznatno odstupa od proračuna preko lančanice,
i u većini slučajeva ga možemo koristiti kao relevantnog u proračunu.
Iz jednadžbe stanje direktno proizlaze i glavni kriteriji za konstrukciju nadzemnog voda,
odnosno kriterij kritičnog raspona i kriterij kritične temperature, koji su od krucijalne
važnosti za sami proračun.
Na temelju proizvoljno odabranog zateznog polja dalekovoda, prikazan je kompletni
mehanički proračun, na način na koji se to koristi i u praksi prilikom dimenzioniranja
nadzemnih vodova.

Abstract (english)

In the opening exposure all elements that directly or indirectly affect on procedure of
calculation are defined, such as vertical and horizontal forces, temperature effect on
overhead line conductors, and other important terms that concerns construction and sizing
of lines itself.
After establishment of all basic terms needed to pay attention on, calculation of sag by
catenary method and parabolic method has been processed. By the results of mentioned
calculation can be cocluded that calculation by parabolic method slightly departs from
calculation by catenary method, and in most cases we can use it as relevant in general
calculation.
From state equation directly results main criteria for construction of overhead lines,
respectively the criterion of critical range, and the criterion of critical temperature,
representing crucial importance for calculation itself.
Based on arbitrarily chosen tension field line, complete mechanical calculation has been
revealed, by the way it is used in practical work by sizing overhead lines.

• Keywords: dodatni teret; naprezanje; raspon; rastezanje; provjes; temperatura; vjetar.
• Keywords (english): additional burden; range; sag; strain; stretch; temperature; wind.
• Language: croatian
• URN:NBN: urn:nbn:hr:168:534983
• Study programme: Title: Electrical Engineering and Information Technology; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike i informacijske tehnologije (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike i informacijske tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2018-02-06 10:27:45