Kev coj cwj pwm rau cov khoom siv hluav taws xob sib xyaw tau dhau los ntawm ntau theem sib txawv txij li xyoo 1970, thaum cov kws tshawb fawb tau pib tshawb nrhiav cov thev naus laus zis raws li cov khoom tshwj xeeb ntawm cov khoom xws li roj hmab silicone. Cov kws ua haujlwm ntawm lub sijhawm ntawd tau 'loj hlob' nrog rau cov plooj (porcelain) thiab iav insulators thiab feem coob tau pom tias qhov kev tsim kho tshiab no tsis muaj ntau tshaj li 'sideshow' - qhov tshiab, yog, tab sis ib qho uas muaj qhov tsis paub tseeb txog kev laus ntxov ntxov thiab kev puas tsuaj sai sai. Ob peb lub zog siv hluav taws xob thaum lub sijhawm tau txaus siab sim nrog cov cuab yeej siv hluav taws xob sib xyaw vim tias qhov kev pheej hmoo zoo li deb tshaj qhov txiaj ntsig.

Ntiaj teb thawj cov pob txha tawg tau tshwm sim ntawm teflon-cov khoom siv hluav taws xob hauv tsev nrog cov khoom sib txuas.

Thaum xyoo 1980s, polymeric insulator thev naus laus zis tau nce siab hauv lub siab ntawm ntau tus kws tsim qauv tsim los ntawm 'kev pheej hmoo tshiab' mus rau 'kev daws teeb meem tshwj xeeb'. Thaum twg cov teeb meem tshwj xeeb yuav tsum tau daws, xws li kev ua pa phem, kev ua phem lossis teeb meem tuav cov khoom siv hluav taws xob hnyav, cov polymers muaj qhov nthuav txawm tias kim dua lwm txoj. Lub ± 500 kV Intertie khiav raws US sab hnub poob ntug dej hiav txwv yog ib qho piv txwv zoo ntawm ib qhov project uas muaj kuab paug zoo tshaj plaws yog qhov tseem ceeb hauv kev xaiv cov insulators sib xyaw. Ib yam li ntawd, thawj daim ntawv thov ntawm cov insulators no nyob rau hauv cov teb chaws xws li Morocco thiab Brazil yog tsom rau kev kov yeej cov teeb meem cuam tshuam txog kev ua phem ua phem.

Cov hlua nro hauv cov cheeb tsam uas muaj kev cuam tshuam loj heev nyob ze Recife, Brazil ua haujlwm hloov cov iav thiab cov plooj (porcelain strings) kom txo tau txoj kev pheej hmoo ntawm lub zog arcs thiab kab poob.

Los ntawm xyoo 1990, kev coj cwj pwm rau cov insulators sib xyaw tau hloov zuj zus ntxiv. Tam sim no, lawv cov ntawv thov txuas ntxiv nthuav dav ntxiv raws li ntau thiab ntau tus engineers saib rau lawv yog thawj qhov kev xaiv rau ntauwd compaction tej yaam num los yog thaum hloov kho cov kab uas twb muaj lawm ntauwd windows thiab txoj cai - ntawm - txoj kev.

Qhov project hauv Switzerland xyoo 1990s yog thawj daim ntawv thov ntawm cov insulators sib xyaw rau kab kev hloov kho hauv cheeb tsam rhiab heev.

Los ntawm kev tig ntawm lub xyoo txhiab, cov tshuab hluav taws xob sib xyaw 'genie' tau 'unleashed los ntawm lub raj mis'. Tam sim no, cov thev naus laus zis no, uas ib zaug tau txwv rau tsuas yog ib qho ntawm tes ntawm cov khoom siv hluav taws xob loj, muaj rau txhua tus neeg uas muaj kev txaus siab nkag mus rau hauv kev lag luam no. Ntau pua tus neeg muag khoom tshiab, tshwj xeeb hauv Suav teb, tau pib tsim cov khoom siv insulators.

Kev xaiv cov tshuab insulator los ntawm cov khoom siv hluav taws xob hauv Suav teb.

Composite insulator technology yog tam sim no tseem ceeb thoob plaws Suav teb rau kev siv ncua kev kawm ntawv ntawm tag nrho cov kis voltages.

Composite insulators, uas nyob rau xyoo 1980s muaj kev lag luam sib faib tsawg dua 1 feem pua ​​thiab hauv 1990s tsawg dua 5 feem pua, muaj los ntawm 2010 twb tau pib tawm tsam cov plooj (porcelain) rau kev lag luam dominance. Kev kwv yees ntawm cov qauv no tau txuas ntxiv mus rau xyoo 2021 xws li cov cuab yeej siv hluav taws xob sib xyaw ua ke tam sim no feem ntau siv rau ntawm cov phiaj xwm nyiaj siv ua haujlwm thoob ntiaj teb. Kuj tseem muaj kev loj hlob sai rau cov ntawv thov substation mus rau qhov chaw uas qee qhov kev siv, xws li DC, thiab qee qhov system voltages, suav nrog EHV thiab UHV, pom cov vaj tsev sib xyaw tau teev nyob rau hauv qhov sib npaug lossis ntau dua rau cov plooj (porcelain).

Kev tsim cov khoom siv hluav taws xob sib xyaw hauv Suav teb tom qab 2000 tau nce siab vim kev xav tau hauv tsev loj hlob.

750 kV Shazhou Substation nta kev rwb thaiv tsev ntawm txhua yam khoom siv thiab kev txhawb nqa insulators.

Evolution of market share by insulator technology: 1990 to 2010. (Source: 2013 INMR WORLD CONGRESS paper by Alberto Pigini).

Ob peb xyoos dhau los, 750 kV Shazhou Substation nyob rau hauv Northwest Tuam Tshoj muab ib qho kev nthuav tseem ceeb nyob rau hauv no fascinating 'txoj kev' ntawm composite insulator technology. Zoo li lub chaw me me hauv Switzerland uas tau tsim ob xyoo lawm ua ntej siv cov khoom sib xyaw ua ke, Shazhou pom cov cuab yeej siv hluav taws xob sib xyaw siv rau txhua yam khoom siv thiab hauv txhua daim ntawv thov kev txhawb nqa. Qhov tseem ceeb no yuav tsum tau muaj kev txaus siab rau ntau tus kws tshaj lij thoob ntiaj teb uas ua haujlwm tsis muaj zog rau ntau xyoo los tsim thiab kho cov thev naus laus zis no.

Txawm li cas los xij, nws zoo li qhov tsis txaus ntseeg uas tau txiav txim siab los ntawm kev siv tsuas yog ib qho cuab yeej insulator thoob plaws txhua daim ntawv thov. Qhov tseeb, qhov txiaj ntsig tiag tiag ntawm txhua yam uas tau ua tiav hauv optimizing porcelain, iav thiab polymeric rwb thaiv tsev dhau 50 xyoo dhau los yog cov engineers niaj hnub no muaj kev xaiv los xaiv cov cuab yeej tsim nyog tshaj plaws rau cov kev cai tshwj xeeb, ib puag ncig thiab kev txwv nyiaj txiag ntawm txhua daim ntawv thov.