Post insulator yog dab tsi? Dab tsi yog cov haujlwm ntawm insulators?

Post insulator

Post insulator yog ib yam khoom tshwj xeeb insulating tswj cov khoom, uas tuaj yeem ua lub luag haujlwm tseem ceeb hauv cov khoom siv hluav taws xob. Thaum ntxov xyoo, pillar insulators feem ntau yog siv rau cov ncej hluav taws xob, thiab tom qab ntawd lawv maj mam tsim rau hauv high-voltage fais fab kab txuas yees. Muaj ntau qhov kev ncua kev kawm ntawv insulators yog dai ntawm ib kawg kom nce creepage nrug. Lawv feem ntau yog ua los ntawm silicone lossis ceramic thiab hu ua insulators. Insulators ua si ob lub luag haujlwm tseem ceeb hauv cov kab hluav taws xob siv hluav taws xob, uas yog, txhawb cov neeg siv hluav taws xob thiab tiv thaiv tam sim no rov qab los rau hauv av. Ob lub luag haujlwm no xav tau kev lees paub. Insulators yuav tsum tsis txhob poob vim flashover breakdown los ntawm kev hloov nyob rau hauv ib puag ncig thiab hluav taws xob load, txwv tsis pub lawv yuav poob lawv cov hauj lwm thiab ua puas lub neej kev pab cuam ntawm tag nrho cov kab.

2. kev ua haujlwm ntawm lub rwb thaiv tsev

Ib tug xov tooj ntawm disc-zoo li tus insulators dai los ntawm ib kawg ntawm high-voltage fais fab kab txuas ntauwd kom creepage nrug. Lawv feem ntau yog ua los ntawm iav, ceramic los yog roj hmab thiab hu ua insulators. Txhawm rau tiv thaiv cov plua plav ntab thiab lwm yam av los ntawm kev ua raws li qhov chaw insulator, txoj hauv kev tsim tau tawg los ntawm flashover ntawm ob qho kawg ntawm lub insulator, uas yog, qhov kev ncua deb. Yog li ntawd, qhov deb ntawm qhov chaw, uas yog, creepage nrug, nce. Qhov kev ncua deb ntawm qhov chaw rwb thaiv tsev, uas yog, qhov kev ncua deb yog hu ua creepage nrug. Nce nrug deb=Nto deb / qhov system txwv qhov siab voltage. Raws li cov kev ua qias tuaj, qhov kev ncua deb ntawm thaj chaw muaj kuab paug hnyav yog feem ntau 31mm / KV. Lub insulator yog du, uas tuaj yeem txo qhov capacitive reactance ntawm cov xov hlau, thiaj li txo qhov poob ntawm tam sim no.

3, cov teeb meem uas twb muaj lawm

Nrog rau kev tsim kho ntawm UHV AC / DC kab thiab kev txhim kho txuas ntxiv ntawm kev xav tau lub zog hauv peb lub teb chaws, qhov teeb meem ntawm cov khoom siv hluav taws xob ntshiab tom qab insulator ua ntau dua, tshwj xeeb tshaj yog nyob rau ntawm UHV DC converter chaw nres tsheb, feem ntau xav txog hauv:

1. Cov teeb meem cuam tshuam sab nraud. Nrog rau qhov tsis zoo ntawm kev ua haujlwm ib puag ncig, kev tiv thaiv kev ua qias tuaj flashover muaj peev xwm ntawm porcelain pillar insulators tsis txaus. Rau UHV DC, ntshiab porcelain post insulators yuav tsum tau loj creepage nrug thiab qauv, tab sis siab post insulators yog ib qho nyuaj rau ua kom muaj zog dabtsi yog khoov thiab seismic zog.

2. Av qeeg. Nws yog ib qho nyuaj los daws qhov teeb meem aseismic ntawm cov khoom siv hluav taws xob siab nrog lub rwb thaiv tsev ntawm hluav taws xob porcelain pillar, uas yog hu ua hluav taws xob porcelain hom high voltage khoom. Rau UHVDC systems, tag nrho qhov siab ntawm pillar insulators siv nyob rau hauv lub tiaj-wave reactors yuav tsum yog 12 meters, thiab cov kev txhawb nqa nyhav yuav tsum ncav cuag tus qauv ntawm 40 tons. Obviously, porcelain pillar insulators yog ib qho nyuaj rau ua tau raws li cov kev cai los tiv thaiv seismic.

3. Kev tsim cov teeb meem zoo. Porcelain post insulators yog qhov nyuaj rau kev tsim khoom vim lawv cov thev naus laus zis, cov cuab yeej siv, cov khoom siv tsis zoo thiab lwm yam laj thawj. Raws li kev tshawb nrhiav ntau, pawg neeg soj ntsuam kev sib tsoo ntawm high voltage pillar porcelain INSULATOR ntawm lub zog xa hluav taws xob Lub Chaw Haujlwm Ua Haujlwm tau txheeb xyuas cov xwm txheej ntawm cov ncej porcelain insulator raws li cov laj thawj kev, thiab kos cov lus xaus tias qhov tawg ntawm tus ncej. porcelain insulator tau tshwm sim los ntawm cov khoom zoo.

Yuav ua li cas yuav substation post insulators configure?

Txhawm rau ua tiav cov kev xaiv zoo ntawm cov khoom siv hluav taws xob rau cov ntawv thov sib txawv, xws li AIS dissolators, cov txheej txheem sib txawv yuav tsum tau txiav txim siab. Hauv kev nthuav dav, cov yam tseem ceeb uas yuav tsum tau xav txog thaum optimizing qhov loj ntawm lub insulator yog txhua yam, hluav taws xob, ib puag ncig, kev ua haujlwm, thiab kev lag luam.

Nyob ntawm daim ntawv thov, muaj ntau yam sib txawv ntawm cov ncej insulators tuaj yeem siv rau hauv cov chaw nres tsheb thiab cov chaw ua haujlwm substations, xws li kev txhawb nqa tsheb npav, kev txhawb nqa yoj yoj reactor, switchgear, thiab lwm yam. Post insulators tuaj yeem muab faib ua peb pawg:

1. Kev ua haujlwm thiab cov khoom siv hluav taws xob

Lub luag haujlwm tseem ceeb ntawm lub disconnector yog kom muaj kev nyab xeeb: nyob rau hauv lub xeev disconnected, nws yuav tsum tau muab ib tug pom thiab txhim khu kev qha disconnect qhov sib txawv, thaum nyob rau hauv lub kaw lub xeev, nws yuav tsum tau tiv thaiv cov ntws ntawm ib txwm thiab txhaum tam sim no tsis muaj kev cuam tshuam los yog txawv txav tsis zoo tej yam kev mob. . Qhov tseeb, cov disconnectors yuav tsum tsis txhob tso tawm los ntawm qhov qhib cua thiab hauv av.

2. Cov kev cai siv tshuab

Los ntawm cov neeg kho tshuab pom, ntxiv rau nws tus kheej ua hauj lwm load, lub disconnector kuj yuav tsum tau dais sab nraud load. Piv txwv li, ib qho ntawm cov xwm txheej tseem ceeb tshaj plaws rau cov cuab yeej UHV yog av qeeg, yog li yuav tsum tsim kom muaj tseeb yog tias tag nrho cov seismic yuav tsum tau ua. Lwm cov khoom uas yuav tsum xav txog yog luv luv Circuit Court, cua kub ceev, thiab lub davhlau ya nyob twg loads.

3. Cov kev cai ib puag ncig

Lub disconnector yog tag nrho raug rau ib puag ncig thiab yuav tsum tau tiv thaiv ib puag ncig yam, xws li icing hnyav los nag hnyav, uas yuav ua rau muaj kev pheej hmoo ntawm paug. Nws yog ib qho tseem ceeb tias kev sib kis yog ib qho tseem ceeb hauv kev txiav txim siab loj, vim tias kev rwb thaiv tsev tsis ua haujlwm tuaj yeem ua rau hauv av paug.

Tag nrho cov kev xav tau no muaj kev cuam tshuam zoo rau kev ua haujlwm ntawm cov ncej insulator, uas ua rau lub nraub qaum insulator yog ib qho tseem ceeb hauv cov disconnectors thiab ntau lwm yam kev siv substation. Muab lwm yam kev xav tau ntsig txog kev xaav hauv kev thauj khoom thaum siv, disconnectors yeej muaj lwm qhov teeb meem tseem ceeb uas lwm hom khoom siv tsis ntsib, uas yog lub zog ntawm cov khoom siv tshuab yuav tsum qhib thiab kaw lub cuab yeej. Yog li ntawd, txhawm rau ua kom cov cuab yeej zoo li no ua haujlwm ib txwm, nws yog ib qho tsim nyog yuav tsum muaj kev nruj nruj.

Ntxiv nrog rau cov kev txwv saum toj no, yuav tsum tau muab cov kev daws teeb meem thiab cov nqi tsim nyog rau feem ntau ntawm cov chaw qhib cua niaj hnub no. Txoj kev loj hlob ntawm post insulators tuaj yeem pab txhawb rau lub hom phiaj no los ntawm kev txwv qhov tsim nyog arc nrug rau tsheb npav, disconnectors, thiab lwm yam khoom siv cog. Qhov no tuaj yeem ua tiav los ntawm kev ua kom zoo tshaj plaws ntawm kev tsim cov khoom siv insulators, piv txwv li, los ntawm kev xaiv cov khoom tsim nyog, txhim kho cov khoom siv dag zog thiab kev nruj, txo tus naj npawb ntawm stacked / nruab nrab flanges, thiab optimizing scaffold profiles thiab creepage coefficients.

Dab tsi yog cov yam ntxwv ntawm post insulators?

Yav dhau los, cov chaw nyob deb nroog tau siv cov ncej hluav taws xob los txhawb cov xaim hluav taws xob, thiab cov ncej hluav taws xob feem ntau siv cov insulators, uas maj mam tsim. Ib tug xov tooj ntawm disc-shaped insulators raug tshem tawm los ntawm ib qho kawg ntawm kev sib txuas ntauwd ntawm high-voltage fais fab kab kom nce qhov kev ncua deb.

1. Tam sim no, feem ntau siv insulators yog: ceramic insulators, FRP insulators, composite insulators thiab semiconductor insulators.

Qhov thib ob, cov insulators siv nyob rau hauv cov nyiaj siv ua haujlwm feem ntau suav nrog tus pin insulators, npauj npaim insulators, suspension insulators, porcelain cross caj npab, pas nrig insulators thiab nro-resistant insulators.

Peb, raws li lub hom phiaj tuaj yeem muab faib ua kab insulator thiab chaw nres tsheb fais fab thiab hluav taws xob rwb thaiv tsev. Ntawm lawv, cov khoom siv hluav taws xob tsis zoo rau cov kab siv yog rab koob, hom npauj npaim thiab hom disc, cov khoom siv tsis zoo yog cov kab rov tav bar hom thiab pas nrig hom ncua kev kawm, cov khoom siv hluav taws xob tsis zoo rau cov chaw nres tsheb fais fab thiab cov khoom siv hluav taws xob siv yog tus pin hom post insulators, Hollow post insulators thiab bushing, thiab cov tsis muaj zog insulators yog qws hom ncej insulators thiab thawv porcelain bushing.

Plaub, raws li cov qauv tuaj yeem muab faib ua kem (tus ncej) insulator, suspension insulator, antifouling insulator thiab casing insulator.

Insulators feem ntau muab faib ua hom destructible thiab tsis-destructible.

Compared nrog iav insulator, pillar insulator muaj qhov zoo ntawm pillar porcelain vase tsuas yog nyob rau hauv uas lawv tau siv ntau tshaj li ob peb xyoos.

Vim yog lub zog txhua yam uas tshwm sim los ntawm cov khoom siv ntawm tus ncej porcelain vase, nws tsis yooj yim rau tawg txawm tias lub plhaub sab nrauv yog raug rau sab nraud quab yuam. Lub zog hluav taws xob ntawm ceramics yog qhov ruaj khov thiab tuaj yeem tswj tau qee lub xeev hauv kev siv. Thiab vim tias qhov kev laus ntawm cov ceramic qeeb qeeb dua iav, iav insulators feem ntau dhau los ua cov ceramic vim lawv tus kheej puas tsuaj, thiab cov porcelain fwj tuaj yeem khiav tsis tu ncua mus ntev.

Thaum cov khoom siv plooj (porcelain) puas lawm, lub tog raj kheej lub taub hau thiab cov khoom tawg yuav raug daig, tab sis qhov seem uas tsis muaj kev puas tsuaj ntawm cov plooj (porcelain) tuaj yeem khaws cov hlua hluav taws xob sab hauv vim nws lub zog muaj zog. Qhov no yog qhov txuas uas ntau qhov kev tsim hluav taws xob hluav taws xob yuav tsum tau tshuaj xyuas thaum xav txog cov khoom zoo li no, thiab nws kuj yog qhov kev puas tsuaj rau tus kheej ntawm cov khoom siv hluav taws xob loj loj.