Određivanje jednačina voda i ugiba na osnovu zadanog parametra lančanice = Determination of the Equations for Conductor and Sag Based on a Given Catenary Parameter

Hatibovic, Alen (2014) Određivanje jednačina voda i ugiba na osnovu zadanog parametra lančanice = Determination of the Equations for Conductor and Sag Based on a Given Catenary Parameter. BOSANSKOHERCEGOVACKA ELEKTROTEHNIKA, 8 (1). pp. 1-6. ISSN 1512-5483

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Abstract

Proračun prema modelu lančanice nije uslovljen dužinom raspona, tj. jednako se može koristiti za kratke i duge raspone, ali je u poređenju sa proračunom prema modelu parabole, koji se koristi samo za kraće raspone, znatno komplikovaniji. Ovaj rad prikazuje određivanje jednačina voda i ugiba na osnovu zadanog parametra lančanice koji se odnosi na izabrani tip provodnika, dužinu raspona, naprezanje i temperaturu provodnika. Predstavljene jednačine osiguravaju tačno izračunavanje visine voda i ugiba u bilo kojoj tački raspona izbjegavajući greške prouzrokovane aproksimacijom lančanice parabolom. Pored određivanja novih jednačina, u ovom radu su takođe prikazane i neke specifične razlike između lančanice i parabole. | The catenary based calculation is not conditioned by the span length, i.e. it can be used for short and long spans as well, but in comparison to the parabola based calculation, which is used for shorter spans only, it is significantly more complicated. This paper shows the determination of the equations for the conductor and the sag based on a given catenary parameter, which refers to the chosen conductor type, span length, tension and temperature of the conductor. The presented equations ensure an exact computation of the conductor height and the sag at any point of the span, avoiding errors caused by the approximation of the catenary by a parabola. Beside the determination of the new equations, some specific differences between the catenary and the parabola have also been shown in this paper.

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