Chii chinonzi Transmission Structure?
Transmission structures ndechimwe chezvinhu zvinonyanya kuoneka zvemagetsi ekufambisa.Vanotsigira maconductoranoshandiswa kutakura magetsi emagetsi kubva kune chizvarwa masosi kune mutoro wevatengi.Tambo dzekufambisa dzinotakura magetsi kwenguva refunzendo pamagetsi akakwirira, kazhinji ari pakati pe10kV ne500kV.
Kune akawanda akasiyana magadzirirwo ekutapurirana zvimiro.Mhando mbiri dzakajairika ndeidzi:
Lattice Steel Towers (LST), iyo inoumbwa nesimbi yesimbi yezvinhu zvega zvega zvakasungwa kanawelded pamwe chete
Tubular Steel Poles (TSP), ari mapango esimbi asina mhango akagadzirwa sechidimbu chimwe chete kana sezvimedu zvakati wandeipamwe chete.
Muenzaniso we500-kV single-circuit LST
Muenzaniso we220-kV double-circuit LST
Ose maLSTs neTSPs anogona kugadzirwa kuti atakure seketi imwe chete kana maviri emagetsi, anonzi single-circuit uye doublecircuit zvimiro (ona mienzaniso iri pamusoro).Zvimiro zvemakondukita maviri anowanzo chengetedza maconductor akachinjika kana akaturikidzana, nepo zvimiro zvedunhu rimwe chete zvinowanzobata makondukita akachinjika.Pamusana pekugadzirisa kwemaitiro emagetsi, zvigadziro zviviri-madunhu akareba kupfuura zvigadziro zve-single-circuit.Pamitsetse yakaderera yemagetsi, zvimiro dzimwe nguvatakura matunhu anopfuura maviri.
A single-circuitalternating current (AC) transmission line ine zvikamu zvitatu.Pa low voltages, nhanho inowanzo sanganisira imwe conductor.Pakukwira kwemagetsi (kupfuura 200 kV), chikamu chinogona kunge chine maconductor akawanda (akasungwa) akapatsanurwa nemapfupi spacers.
A double-circuitAC transmission line ine maviri seti ezvikamu zvitatu.
Dead-end towers anoshandiswa panogumira tambo yekutumira;uko mutsara wekutumira unotendeuka pakona huru;parutivi rumwe norumwe rwekuyambuka kukuru kwakadai sorwizi rukuru, mugwagwa mukuru, kana mupata mukuru;kana nepakati pezvikamu zvakatwasuka kuti upe rumwe rubatsiro.Shongwe yakafa inosiyana neshongwe yekumisikidza nekuti yakavakwa kuti ive yakasimba, kazhinji ine hwaro hwakafara, uye ine tambo dzakasimba dzekuvharisa.
Saizi yezvimiro inosiyana zvichienderana nevoltage, topography, kureba, uye shongwe mhando.Semuyenzaniso, ma-double-circuit 500-kV LSTs anowanzobva pa150 kusvika kunopfuura 200 feet kureba, uye single-circuit 500-kV shongwe dzinowanzobva pa80 kusvika 200 tsoka kureba.
Zvivako zvemadunhu maviri akareba kupfuura zvivakwa zvedunhu rimwe chete nekuti zvikamu zvakarongwa zvakadzika uye chikamu chepasi chinofanirwa kuchengetedza kubvumidzwa kwepasi kudiki, nepo zvikamu zvakarongedzerwa zvakachinjika pane imwechete-yedunhu zvivakwa.Sezvo voltage ichiwedzera, zvikamu zvinofanirwa kupatsanurwa nedaro rakawanda kudzivirira chero mukana wekukanganisa kana kukanda.Saka, shongwe dzemagetsi epamusoro uye mapango akareba uye ane mawoko akatambanuka akatwasuka pane akadzika magetsi emagetsi.
Nguva yekutumira: Feb-25-2022
