Transmission Structure yog dab tsi?
Cov qauv kev sib kis yog ib qho ntawm cov ntsiab lus pom zoo tshaj plaws ntawm cov hluav taws xob xa hluav taws xob. Lawv txhawb cov conductorssiv los thauj hluav taws xob hluav taws xob los ntawm cov khoom tsim los rau cov neeg siv khoom thauj khoom. Cov kab sib kis tau muaj hluav taws xob ntevnrug ntawm high voltages, feem ntau ntawm 10kV thiab 500kV.
Muaj ntau ntau qhov sib txawv tsim rau cov qauv sib kis. Muaj ob hom yog:
Lattice Steel Ntauwd (LST), uas muaj xws li ib tug steel moj khaum ntawm ib tug neeg yam ntxwv Cheebtsam uas yog bolted los yogwelded ua ke
Tubular Steel Ncej (TSP), uas yog hollow steel ncej fabricated xws li ib daim los yog raws li ob peb daim haumua ke.
Piv txwv ntawm 500-kV ib-circuit LST
Piv txwv ntawm 220-kV ob-circuit LST
Ob leeg LSTs thiab TSPs tuaj yeem tsim los nqa ib lossis ob lub voj voog hluav taws xob, hu ua ib lub voj voog thiab ob lub voj voog (saib cov piv txwv saum toj no). Ob-circuit structures feem ntau tuav cov conductors nyob rau hauv ib tug ntsug los yog stacked configuration, whereas ib leeg-circuit structures feem ntau tuav cov conductors horizontally. Vim yog kev teeb tsa ntsug ntawm cov neeg siv hluav taws xob, cov txheej txheem ob-circuit yog siab dua cov qauv ntawm ib lub voj voog. Ntawm cov kab hluav taws xob qis, qee zaum cov qauvnqa ntau tshaj ob lub voj voog.
Ib-circuitalternating tam sim no (AC) kis kab mob muaj peb theem. Ntawm qhov tsawg voltages, ib theem feem ntau muaj ib tug neeg xyuas pib. Nyob rau hauv high voltages (tshaj 200 kV), ib theem muaj peev xwm muaj ntau yam conductors (bundled) sib cais los ntawm luv spacers.
Ib ob-circuitAC kis tau tus mob kab muaj ob txheej ntawm peb theem.
Cov pej thuam tuag-kawg yog siv qhov twg cov kab sib kis xaus; qhov twg cov kab kis tau los ntawm lub kaum sab xis loj; nyob rau txhua sab ntawm txoj kev hla loj xws li tus dej loj, txoj kev loj, lossis hav loj; los yog nyob rau ib ntus raws ntu ncaj los muab kev txhawb nqa ntxiv. Ib tug pej thuam tuag-kawg txawv ntawm ib tug pej thuam ncua kev kawm nyob rau hauv uas nws yog tsim kom muaj zog, feem ntau muaj ib tug dav puag, thiab muaj zog insulator hlua.
Cov qauv loj sib txawv nyob ntawm qhov voltage, topography, ncua ntev, thiab ntauwd hom. Piv txwv li, ob-circuit 500-kV LSTs feem ntau yog los ntawm 150 mus rau ntau tshaj 200 feet siab, thiab ib-circuit 500-kV yees feem ntau yog li ntawm 80 mus rau 200 feet siab.
Ob chav-circuit qauv yog siab dua ib-circuit qauv vim hais tias cov theem yog teem vertically thiab cov theem qis tshaj yuav tsum muaj ib tug tsawg kawg nkaus hauv av clearance, thaum lub theem yog teem horizontally ntawm ib-circuit lug. Raws li qhov hluav taws xob nce, cov theem yuav tsum tau sib cais los ntawm kev ncua deb kom tsis txhob muaj kev cuam tshuam los yog arcing. Yog li, ntau dua voltage yees thiab ncej yog siab dua thiab muaj dav kab rov tav hla caj npab dua li cov qauv qis dua.
Post lub sij hawm: Feb-25-2022
