Tsis hais txog ntawm cov kab hluav taws xob siab thiab tsis tshua muaj hluav taws xob zoo li tsis siv neeg thaiv cov kab hluav taws xob, feem ntau yog cov txheej txheem hauv qab no: linear ncej, spanning ncej, nro pas nrig, davhlau ya nyob twg ncej thiab lwm yam.

Common Ncej Structure Classification:
(A)ncaj kab ncej- kuj hu ua intermediate ncej. Teem rau hauv ib txoj kab ncaj nraim, tus ncej ua ntej thiab tom qab xaim rau tib hom thiab tus naj npawb ntawm qhov sib npaug ntawm cov hlau ntawm ob sab ntawm qhov nro yog sib npaug, tsuas yog nyob rau hauv txoj kab tawg kom tiv thaiv qhov tsis sib npaug ntawm ob sab.
(B) nro pas nrig - kab yuav tshwm sim nyob rau hauv lub lag luam ntawm cov kab tawg txhaum thiab ua rau cov pej thuam kom tiv taus qhov nro, txhawm rau tiv thaiv kev nthuav dav ntawm qhov txhaum, yuav tsum tau nruab rau hauv ib qho chaw uas muaj zog dua txhua yam, muaj peev xwm tiv taus. nro ntawm tus pej thuam, tus pej thuam no hu ua tension rod. Tension rod teem nyob rau hauv cov kev taw qhia ntawm txoj kab, yog li ntawd koj yuav tiv thaiv tau lub breakage ntawm txoj kab, qhov txhaum kis mus rau tag nrho cov kab, thiab tsuas yog lub nro imbalance yog txwv rau lub xeev ntawm ob lub nro pas nrig. Qhov kev ncua deb ntawm ob lub tensioning pas nrig hu ua tensioning seem lossis tensioning iav nrug, cov kab hluav taws xob ntev feem ntau muab 1 km rau ib qho tensioning seem, tab sis kuj raws li kev khiav hauj lwm tej yam kev mob kom tsim nyog rau ncua los yog luv. Nyob rau hauv tus naj npawb ntawm cov xov hlau thiab cov ntoo khaub lig ntawm qhov chaw tau hloov, tab sis kuj siv cov tensioning pas nrig.
(C)kaum ncejib qho kev hloov pauv ntawm txoj kab nyiaj siv ua haujlwm rau qhov chaw, lub kaum sab xis tuaj yeem ua kom nruj-tiv taus, kuj tuaj yeem yog linear, raws li tus pej thuam loaded nrog nro hlau.
(D)davhlau ya nyob twg pole - ib qho nyiaj siv ua haujlwm rau qhov pib thiab xaus, vim hais tias lub davhlau ya nyob twg ncej tsuas yog ib sab ntawm tus neeg xyuas pib, nyob rau hauv ib txwm muaj xwm txheej kuj yuav tsum tau tiv thaiv qhov nro, yog li txhawm rau txhim kho lub cable.
Tus neeg xyuas pib hom: steel-core aluminium stranded hlau muaj lub zog txhua yam, zoo hluav taws xob conductivity, lub teeb yuag, tus nqi qis, corrosion kuj, yog dav siv nyob rau hauv high-voltage overhead fais fab kab.
Qhov tsawg kawg nkaus cross-section ntawm tus neeg xyuas pib tsis tsawg dua 50mm² rau tus kheej-kaw kab thiab 50mm² rau ntawm kab.
Kab suab: qhov kev xaiv ntawm lub suab yog qhov tsim nyog los coj thaj chaw thaj chaw thaj tsam 60-80m, thaj chaw tsis nyob hauv 65-90m, tab sis kuj raws li qhov xwm txheej ntawm qhov chaw.
Kev hloov pauv ntawm tus neeg xyuas pib: tus neeg xyuas pib yuav tsum tau txais tag nrho ntu kev hloov pauv, txhua 3-4km kev hloov pauv, txhua lub sijhawm los tsim kom muaj lub voj voog hloov pauv, tom qab lub voj voog hloov pauv, ua ntej kev taw qhia ntawm lub substation yuav tsum tau khaws cia nyob rau hauv kev taw qhia ntawm ob tug nyob sib ze faib ntawm lub tib theem kab. Lub luag haujlwm: txhawm rau tiv thaiv kev cuam tshuam nrog kev sib txuas lus nyob ze qhib kab thiab kab teeb liab; kom tsis txhob muaj hluav taws xob ntau dhau.

Kev faib tawm ntawm cov kab hluav taws xob siv hluav taws xob, txawm tias cov kab hluav taws xob siab, cov kab hluav taws xob tsawg lossis cov kab tsis siv neeg tsis siv neeg, tuaj yeem muab faib ua cov hauv qab no: cov ncej ncaj, kab rov tav, khi ncej thiab cov kav hlau txuas.
1. Kev faib tawm ntawm cov qauv ncej hluav taws xob
Ib yam. Ncaj Ncees: Kuj tseem hu ua tus ncej nruab nrab, ntsia rau ntawm ntu ncaj, thaum hom thiab tus naj npawb ntawm cov conductors zoo ib yam, qhov nro ntawm ob sab ntawm tus ncej yog sib npaug. Nws tsuas yog tiv taus qhov tsis sib npaug ntawm ob sab thaum tus neeg xyuas pib tawg.
Nws yog ntsia rau ntawm ib tug ncaj seem thaum cov conductors yog tib hom thiab tooj. b. Tension Resistant Ncej: Thaum ib txoj kab raug txiav, txoj kab yuav raug rau cov quab yuam tensile. Txhawm rau tiv thaiv kev sib kis ntawm qhov yuam kev, nws yog ib qho tsim nyog yuav tsum tau nruab cov pas nrig nrog lub zog txhua yam thiab muaj peev xwm tiv taus qhov nro ntawm qhov chaw tshwj xeeb, hu ua tension bars. Tension rods yog muab nrog cov kab nro raws txoj kab los tiv thaiv kev sib kis ntawm kev ua txhaum cai thiab txwv qhov tsis sib xws ntawm qhov nro ntawm ob txoj hlua nro. Qhov kev ncua deb ntawm ob qhov nro rods yog hu ua ntu nro lossis nro ncua, uas feem ntau yog teem rau ntawm 1 km rau cov kab hluav taws xob ntev dua, tab sis tuaj yeem hloov kho raws li kev ua haujlwm. Tension rods kuj tseem siv tau qhov twg tus naj npawb thiab ntu ntu ntawm cov conductors sib txawv.
c. Lub kaum sab xis rods: Siv raws li kev hloov pauv ntawm cov taw qhia taw tes rau cov kab hluav taws xob overhead. Lub kaum sab xis tej zaum yuav tensioned los yog leveled. Kev txhim kho cov kab nro yog nyob ntawm qhov kev ntxhov siab ntawm tus ncej.
d. Termination Posts: Siv rau thaum pib thiab xaus cov ntsiab lus ntawm cov kab hluav taws xob overhead. Feem ntau, ib sab ntawm lub davhlau ya nyob twg ncej yog nyob rau hauv nro thiab yog nruab nrog ib tug nro hlau.
Tus neeg xyuas pib hom: Aluminium core stranded hlau (ACSR) yog dav siv nyob rau hauv high voltage overhead fais fab kab vim nws cov neeg kho tshuab muaj zog txaus, zoo hluav taws xob conductivity, lub teeb yuag, tsis tshua muaj nqi thiab corrosion kuj. Rau 10 kV overhead kab, conductors raug categorized rau hauv liab qab conductors thiab insulated conductors. Insulated conductors feem ntau yog siv rau hauv thaj chaw hav zoov thiab qhov chaw uas tsis muaj av txaus.
Tus neeg xyuas pib hla ntu: Steel-core aluminium stranded nyob ntawm tej yam tsawg kawg nkaus cross-section tsis tsawg tshaj li 50mm² feem ntau yog siv rau tus kheej-kaw kab thiab los ntawm kab.
Kab nrug: Qhov kev ncua deb ntawm kab hauv thaj chaw tiaj tus yog 60-80m, thiab qhov kev ncua deb ntawm kab hauv thaj chaw tsis nyob yog 65-90m, uas tuaj yeem hloov kho raws li qhov xwm txheej ntawm qhov chaw.
Kev thim rov qab ntawm tus neeg xyuas pib: Tus neeg xyuas pib yuav tsum tau thim rov qab txhua txhua 3-4 mais, thiab lub voj voog rov qab yuav tsum tau tsim rau txhua ntu. Tom qab lub commutation voj voog, theem ntawm cov nyob sib ze substation feeder yuav tsum zoo ib yam li theem ua ntej kev taw qhia ntawm lub substation. Qhov no yog los tiv thaiv kev cuam tshuam nrog kev sib txuas lus nyob ze thiab cov kab teeb liab thiab tiv thaiv overvoltage.