Sebopeho sa Phetiso ke Eng?
Mehaho ea phetisetso ke e 'ngoe ea likarolo tse bonahalang tsa tsamaiso ea motlakase. Ba tšehetsa li-conductorse sebedisoang ho tsamaisa matla a motlakase ho tloha mehloling ya tlhahiso ho ya ho mojaro wa bareki. Lithapo tsa motlakase li nka nako e telelebohole ba maqhubu a phahameng, hangata lipakeng tsa 10kV le 500kV.
Ho na le meralo e mengata e fapaneng ea meaho ea phetiso. Mefuta e 'meli e tloaelehileng ke:
Lattice Steel Towers (LST), e nang le moralo oa tšepe oa likarolo tsa motho ka mong tse entsoeng ka bolt kapatjheseletsa mmoho
Lithupa Tsa tšepe tsa Tubular (TSP), e leng lipalo tsa tšepe tse sekoti tse entsoeng e le karolo e le 'ngoe kapa likotoana tse ngata tse kentsoengmmoho.
Mohlala oa 500–kV single-circuit LST
Mohlala oa 220-kV double-circuit LST
Ka bobeli LSTs le TSPs li ka etsetsoa ho tsamaisa circuit e le 'ngoe kapa tse peli tsa motlakase, tse bitsoang meaho e le 'ngoe ea potoloho le li-doublecircuit (sheba mehlala e kaholimo). Meaho e nang le li-conductor tse peli hangata e ts'oara li-conductors tse otlolohileng kapa tse phuthetsoeng, athe li-conductor tsa potoloho e le 'ngoe hangata li tšoara li-conductors tse tšekaletseng. Ka lebaka la tlhophiso e otlolohileng ea li-conductor, meaho ea potoloho e habeli e telele ho feta ea potoloho e le 'ngoe. Meleng e tlase ea motlakase, ka linako tse ling meahotsamaisa lipotoloho tse fetang tse peli.
Potoloho e le 'ngoealternating current (AC) transmission line e na le mekhahlelo e meraro. Li-voltage tse tlase, hangata mohato o na le conductor e le 'ngoe. Ka maqhubu a phahameng (ho feta 200 kV), mohato o ka ba le li-conductors tse ngata (tse ngata) tse arotsoeng ke li-spacers tse khutšoanyane.
Potoloho e habeliMohala oa phetiso ea AC o na le lihlopha tse peli tsa mekhahlelo e meraro.
Litora tsa ho qetela li sebelisoa moo mohala oa phetiso o fellang teng; moo mohala oa phetisetso o fetohang ka lehlakoreng le leholo; ka lehlakoreng le leng le le leng la ho tšela ho hoholo ho kang nōka e khōlō, ’mila o moholo, kapa phula e khōlō; kapa ka linako tse ling hammoho le likarolo tse otlolohileng ho fana ka tšehetso e eketsehileng. Tora e shoeleng e fapane le tora e emisitsoeng ka hore e hahiloe hore e be matla, hangata e na le motheo o pharaletseng, 'me e na le likhoele tse matla tsa insulator.
Bophahamo ba sebopeho bo fapana ho latela voltage, topography, bolelele ba span le mofuta oa tora. Mohlala, lipotoloho tse peli tsa 500-kV LST hangata li tloha ho 150 ho isa ho tse fetang 200 ka bolelele, 'me litora tsa potoloho e le 'ngoe tsa 500-kV hangata li tloha ho 80 ho isa ho 200 maoto a bolelele.
Mehaho ea lipotoloho tse peli e telele ho feta ea potoloho e le 'ngoe hobane mekhahlelo e hlophisitsoe ho ea holimo 'me karolo e tlaase ka ho fetisisa e tlameha ho boloka sebaka se fokolang sa mobu, ha mekhahlelo e hlophisitsoe ka mokhoa o otlolohileng holim'a mehaho ea potoloho e le 'ngoe. Ha motlakase o ntse o eketseha, mekhahlelo e tlameha ho aroloa ka sebaka se selelele ho thibela monyetla leha e le ofe oa ho kena-kenana le tšitiso kapa arcing. Kahoo, litora le lipalo tse phahameng tsa motlakase li telele ho feta 'me li na le matsoho a pharalletseng a tšekaletseng ho feta meaho e tlase ea motlakase.
Nako ea poso: Feb-25-2022
