Ultra-high voltage kis tau tus mob hais txog kev siv 500 kV-1000 kV voltage theem xa hluav taws xob.
Yog tias 220 kV kis tau tus mob index yog 100%, tus txheeb ze peev ib kilometer ntawm UHV kis tau tus mob, tus nqi txheeb ze ib kilowatt-teev hluav taws xob xa mus ib puas kilometers thiab kev noj cov khoom siv hlau, lwm yam., tau raug txo kom tsawg, thiab txoj kab hauv kev siv tus nqi tau raug txhim kho zoo.
Hauv peb lub neej txhua hnub, peb tuaj yeem pom cov nyiaj siv ua haujlwm ultra-high voltage kis tau tus mob project, seb peb puas tau xav txog cov lus nug: vim li cas ho tsis tuaj yeem zoo li lub nroog underground cable, high-voltage fais fab kab tag nrho faus underground?
Cov kab hluav taws xob hauv av tam sim no feem ntau yog qis qis dua.
Kev sib kis ntawm cov kab nrog high voltage theem yog feem ntau overhead, uas yog qhov tseem ceeb ntawm cov nqi thiab kev siv tshuab.
Cov kab hluav taws xob hauv av yog qhov nyuaj dua li cov qauv ntawm cov kab hluav taws xob, nrog rau cov kev cai siab, kev tsim khoom, thiab kev tsim kho nyuaj, txuas nrog lub cable faus underground, nws tsis yooj yim nrhiav kev txhaum, rov kho dua, thiab kev saib xyuas kuj nyuaj dua.
Thiab nyob rau hauv cov nqe lus ntawm tus nqi, feem ntau, tib theem voltage ntawm cov nqi hluav taws xob hauv av 3 rau 5 lub sij hawm siab tshaj cov kab overhead.
Nyob rau hauv tshwj xeeb, peb cov kab high-voltage theem feem ntau yog siv rau kev sib kis mus ntev.
Yog siv underground cables, tshwj xeeb tshaj yog rau kev sib kis mus ntev tsis tu ncua los ntawm txoj kev struts, cov nqi thiab cov kev cai yuav tsum tau txawm skyrocket.
Ntawm qhov tod tes, kuj cov underground kab itself is inherently “hard”.
Overhead kab nyob rau hauv cov huab cua nyob rau hauv zoo thermal tej yam kev mob, thaum huab cua nyob ib ncig ntawm lub underground cable tsis ntws, nyuaj rau dissipate tshav kub, uas feem ntau txwv cov theem ntawm lub hwj chim underground cables yuav kis tau.
Qhov tseem ceeb tshaj plaws yog tias kev sib kis ntawm ultra-high voltage tsis tuaj yeem nrhiav tau cov khoom siv rwb thaiv tsev zoo los ua cov tawv nqaij sab nrauv. rwb thaiv tsev txheej ntawm cov hlau.
Yog li ntawd, ultra-high voltage xov hlau yog liab qab thiab tsis tuaj yeem faus yuav hauv av.
Muaj kev faib cov capacitance nyob ib ncig ntawm cov xov hlau, los ntawm qhov uas tam sim no tuaj yeem tawm.
Ntawm ib sab kom nce kev noj, ntawm qhov tod tes, yog muaj tsiaj raug kaw, tseem yuav muaj kev pheej hmoo ntawm electrocution.
Cua yog qhov rwb thaiv tsev, tiam sis lub ntiaj teb yog tus coj. Nyob rau hauv lub overhead kab, Nws yog txaus los muab cov hlau ncaj qha rau ntawd.
Tab sis nyob rau hauv lub underground, ntxiv ib txheej ntawm rwb thaiv tsev plhaub sab nraum cov hlau, txwv tsis pub, hluav taws xob hauv cov hlau tsis tau mus deb, thiab cov hluav taws xob xau yuav xau txhua yam uas tseem tshuav.
Cov kab hluav taws xob hauv av yog qhov nyuaj dua li cov qauv ntawm cov kab hluav taws xob, nrog rau cov kev cai siab, kev tsim khoom, thiab kev tsim kho nyuaj, txuas nrog lub cable faus underground, tsis yooj yim nrhiav kev txhaum, rov kho dua, thiab kev saib xyuas kuj nyuaj dua.
Feem ntau hais lus, tus nqi ntawm cov kab hluav taws xob hauv av ntawm tib theem voltage yuav yog ob peb zaug lossis txawm tias kaum tawm lub sijhawm ntawm cov kab hluav taws xob aerial high-voltage.
Ultra-high voltage cables faus underground muaj ob qho tib si kev nyab xeeb thiab nyiaj txiag teeb meem.
Yog muaj kev txhaum tshwm sim, nws qhov kev tshuaj xyuas thiab kho cov kab hluav taws xob yog qhov project loj heev thiab tsis tuaj yeem them taus pov thiab tig.
Yog li ntawd, UHV cables tam sim no yuav tsum tau dai siab hauv huab cua.
Underground cable conductors outsourced rwb thaiv tsev thiab tiv thaiv txheej raug nruj heev, tib neeg lub cev kev sib cuag nrog cov tawv nqaij sab nraud ntawm lub cable yuav tsis muaj kev phom sij.
Cable nteg kuj ceev faj heev, lub cable feem ntau yog faus rau hauv ib qho tshwj xeeb cable trench, kab kab yeeb nkab, los yog cable tunnel, nyob rau hauv kev sib cais kev nyab xeeb thiab kev tiv thaiv zoo.
Qhov tob yog feem ntau tsawg tshaj li ib nrab ib 'meter', thiab qhov siab dua qhov voltage, qhov tob ntawm kab yog faus.
Ntxiv mus, yuav muaj ib lub cable ua haujlwm zoo los yog ib qho cable marker ceg txheem ntseeg ua tus cim txhua ob peb lub kaum os hauv av uas cov cable raug faus kom nco ntsoov cov neeg muaj kev nyab xeeb.
Yog li ntawd, underground cables feem ntau tsis ua rau muaj kev phom sij rau cov neeg nyob hauv.
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