Kodi Transmission Structure ndi Chiyani?
Mapangidwe opatsirana ndi chimodzi mwa zinthu zowonekera kwambiri pamagetsi otumizira magetsi. Amathandizira ma conductoramagwiritsidwa ntchito kunyamula mphamvu yamagetsi kuchokera kumagwero amagetsi kupita ku katundu wamakasitomala. Njira zotumizira magetsi zimatengera nthawi yayitalimtunda wamagetsi okwera, nthawi zambiri pakati pa 10kV ndi 500kV.
Pali mitundu yosiyanasiyana yopangira zida zotumizira. Mitundu iwiri yodziwika bwino ndi:
Zithunzi za Lattice Steel Towers (LST), yomwe imakhala ndi chitsulo chachitsulo chamagulu amtundu wina omwe ali ndi bolt kapenawelded pamodzi
Mitengo yachitsulo ya Tubular (TSP), amene ndi mizati yachitsulo yopanda dzenje yopangidwa ngati chidutswa chimodzi kapena ngati zidutswa zingapopamodzi.
Chitsanzo cha 500–kV single-circuit LST
Chitsanzo cha LST ya 220-kV yozungulira kawiri
Ma LST ndi ma TSP onse amatha kupangidwa kuti azinyamula mabwalo amagetsi amodzi kapena awiri, otchedwa single-circuit and doublecircuit structures (onani zitsanzo pamwambapa). Zozungulira ziwiri nthawi zambiri zimakhala ndi ma kondakitala mowongoka kapena osanjikizidwa, pomwe makondakitala amodzi amakhala mopingasa. Chifukwa cha mawonekedwe osunthika a ma conductor, zozungulira ziwiri zimakhala zazitali kuposa zida zamtundu umodzi. Pamizere yotsika yamagetsi, zomanga nthawi zinakunyamula mabwalo opitilira awiri.
Wozungulira umodziAlternating current (AC) transmission line ili ndi magawo atatu. Pamagetsi otsika, gawo nthawi zambiri limakhala ndi kondakitala m'modzi. Pa ma voltages apamwamba (opitilira 200 kV), gawo limatha kukhala ndi ma conductor angapo (ophatikizidwa) olekanitsidwa ndi ma spacers achidule.
Kuzungulira kawiriChingwe chotumizira cha AC chili ndi magawo awiri a magawo atatu.
Zinsanja zakufa zimagwiritsidwa ntchito pomwe chingwe chotumizira chimathera; kumene chingwe chopatsira chimatembenukira pamakona akulu; mbali iliyonse ya kuwoloka kwakukulu monga mtsinje waukulu, msewu waukulu, kapena chigwa chachikulu; kapena pakapita nthawi limodzi ndi magawo owongoka kuti apereke chithandizo chowonjezera. Nsanja yakufa imasiyana ndi nsanja yoyimitsidwa chifukwa imamangidwa kuti ikhale yamphamvu, nthawi zambiri imakhala ndi maziko okulirapo, ndipo imakhala ndi zingwe zolimba zotchingira.
Kukula kwa kapangidwe kake kumasiyanasiyana kutengera mphamvu yamagetsi, ma topography, kutalika kwake, ndi mtundu wa nsanja. Mwachitsanzo, ma LST a 500-kV LST amazungulira kawiri amasiyana kuchokera pa 150 mpaka kupitirira 200 utali, ndipo nsanja za 500-kV zamtundu umodzi nthawi zambiri zimayambira 80 mpaka 200 utali.
Zomangamanga ziwiri zimakhala zazitali kuposa zozungulira zozungulira imodzi chifukwa magawowa amakonzedwa molunjika ndipo gawo lotsika kwambiri liyenera kukhala ndi chilolezo chochepa, pamene magawowo amakonzedwa mozungulira pazitsulo zamtundu umodzi. Pamene magetsi akuchulukirachulukira, magawowo ayenera kulekanitsidwa ndi mtunda wochulukirapo kuti apewe mwayi uliwonse wosokoneza kapena kugunda. Chifukwa chake, nsanja ndi mitengo yayikulu yamagetsi ndi yayitali ndipo imakhala ndi mikono yopingasa yotakata kuposa zida zotsika zamagetsi.
Nthawi yotumiza: Feb-25-2022
