Magnetic field quantities calculation of three-phase overhead lines

U ovom završnom radu opisana je analiza i proveden proračun magnetskih polja u okolišu trofaznih vodova. Na početku rada koncizno su opisani mogući stupovi dalekovoda te detaljno obrazloženo kako se i od čega izrađuju temelji i stupovi dalekovoda. Zatim su opisani temeljni utjecaji magnetskih veličina na raznoliku živu te neživu prirodu, prikazana je tablica ograničenja magnetskih veličina u Republici Hrvatskoj. Na kraju rada provodi se teorijski pregled analitičkog izračuna magnetskog polja, pojednostavljena shema jednog vodiča protjecanog električnom strujom postupno se proširuje i na kraju dobivamo zadovoljavajuću aproksimaciju dalekovoda u 41 stvarnosti. Primjenom te aproksimacije na zadanim primjerima stvarnog dalekovoda izračunate su magnetske veličine i nacrtana krivulja koja nam grafički predočuje izračunate vrijednosti.The final thesis describes analyze and calculation of magnetic fields in surroundings of three-phase lines. At the beginning of the thesis, the possible columns of the transmission line are described concisely, how and from which material are the foundations and columns of the transmission line made is explained in detail. Then the basic effects of magnetic magnitudes on the diverse living and inanimate nature are described, a table of magnetic magnitude limitations in the Republic of Croatia is presented. At the end of the thesis, a theoretical review of the analytical calculation of the magnetic field is preformed, the simplified scheme of one conductor with electric current is gradually expanding and finally we get a satisfactory approximation of the transmission line in reality. By applying this approximation to the given examples of the real transmission line, magnetic magnitudes are calculated, a curve is drawn that graphically presents the calculated values