High-voltage switchgear yog ib qho khoom siv tseem ceeb hauv lub tshuab hluav taws xob siv rau kev tswj, kev tiv thaiv, thiab kev sib cais circuits. Nws cov peev txheej tuaj yeem raug txiav txim siab los ntawm plaub qhov ntev: qib voltage, pawg ua haujlwm, qauv qauv, thiab thaj chaw thov. Kev txhais kom meej tias nws qhov kev pab them nqi pab tsim kom muaj kev nkag siab zoo hauv kev npaj engineering, kev xaiv cov khoom siv, thiab kev ua haujlwm thiab kev tswj xyuas, kom ntseeg tau tias daim phiaj hluav taws xob tuaj yeem nruab nrog qhov tsim nyog thiab txhim khu kev qha switchgear hauv cov xwm txheej sib txawv.
Los ntawm qhov kev xav ntawm qib voltage, siab -voltage switchgear feem ntau yog hais txog switchgear siv rau AC rated voltage ntawm 3kV thiab siab dua los yog DC rated voltage ntawm 1.5kV thiab siab dua. Raws li International Electrotechnical Commission (IEC) thiab cov qauv suav nrog, nws tuaj yeem muab faib ua peb theem: nruab nrab voltage (3.6kV-40.5kV), high voltage (72.5kV-}252kV), thiab ultra-high voltage (363kV thiab siab dua). Switchgear ntawm qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm cov rwb thaiv tsev, luv luv-circuit breaking peev xwm, kev tsim qauv, thiab kev ntsuam xyuas yuav tsum tau ua kom haum rau ntau yam kev xav tau los ntawm kev faib tawm mus rau cov kev sib kis loj.
Nyob rau hauv cov nqe lus ntawm kev ua hauj lwm pawg, siab -voltage switchgear encompasses Circuit Court breakers, disconnectors, load switches, grounding switches, thiab ua tiav cov khoom tsim los ntawm cov khoom no. Circuit Court breakers muaj ib tug ua tiav arc - tua qhov system, muaj peev xwm cuam tshuam cov load tam sim no thiab luv luv - Circuit Court tam sim no, thiab yog cov cuab yeej tseem ceeb rau kev sib cais txhaum. Disconnectors tsis muaj arc - tua muaj peev xwm thiab tsuas yog siv los tsim qhov pom kev cuam tshuam rau kev saib xyuas kev nyab xeeb. Load switches tuaj yeem txuas thiab txiav cov kab hluav taws xob hauv ib qho kev thauj khoom uas tau teev tseg thiab feem ntau siv nrog fuses kom ua tiav luv luv - tiv thaiv Circuit Court. Grounding keyboards yog siv los grounding Circuit Court, tso cov seem seem, thiab muab kev tiv thaiv tus kheej. Cov khoom siv hluav taws xob sib xyaw ua ke (xws li GIS thiab HGIS) sib koom ua ke ntau lub luag haujlwm ua haujlwm hauv lub kaw lus kaw, sib txuas kev tswj hwm, tiv thaiv, thiab saib xyuas kev ua haujlwm.
Los ntawm cov qauv kev xav, siab -voltage switchgear tuaj yeem muab faib ua peb pawg: qhib hom, hom thawv, thiab hom kaw. Qhib - hom switchgear nthuav tawm cov khoom nyob rau hauv huab cua, nrog cov insulators thiab txhawb kev tsim lub ntsiab ncej. Nws yog tsim rau cov chaw uas muaj qhov chaw txaus thiab ib puag ncig zoo. Lub thawv- hom switchgear encapsulates hloov cov ntsiab lus hauv lub txee hlau, muab kev tiv thaiv qib siab thiab ua kom yooj yim rau kev teeb tsa sab hauv tsev thiab sab nraum zoov. Nyob rau hauv lub switchgear (tshwj xeeb tshaj yog GIS) lub tsev tag nrho cov Cheebtsam nyob rau hauv cov hlau ntim ntim nrog insulating gases xws li SF₆. Nws cov qauv compact heev thiab ua tau zoo heev rau kev ua qias tuaj thiab kev saib xyuas- ua haujlwm pub dawb ua rau nws haum rau hauv nroog substations, underground faib chav, thiab ib puag ncig muaj kuab heev.
Nyob rau hauv cov nqe lus ntawm daim ntawv thov, siab -voltage switchgear spans tag nrho lub hwj chim tiam, kis tau tus mob, transformation, tis, thiab industrial zog noj saw. Hauv kev tsim hluav taws xob, nws yog siv rau kev hloov lub tshuab hluav taws xob tso tawm thiab cog cov khoom siv hluav taws xob. Hauv kev sib kis, nws tau teeb tsa hauv substation kab nkag thiab tawm, ntu busbar, thiab khi circuits kom ua tiav siab -voltage hluav taws xob faib thiab kev tiv thaiv. Hauv kev faib khoom, nws tau siv dav hauv lub nplhaib tseem ceeb, lub thawv - hom substations, thiab cov chaw nres tsheb xa tawm kom ntseeg tau tias muaj kev xa hluav taws xob zoo rau cov neeg siv. Hauv kev lag luam kev lag luam, nws ua haujlwm hloov hluav taws xob thiab kev ua txhaum txoj haujlwm nyob rau hauv siab -load fais fab mov scenarios xws li steel, petrochemical, thiab tsheb thauj mus los. Tsis tas li ntawd, nrog rau qhov loj - nplai kev sib koom ua ke ntawm cov khoom siv hluav taws xob tshiab, siab -voltage switchgear tau ua lub luag haujlwm tseem ceeb hauv kev sib txuas ntawm kab hluav taws xob, hluav taws xob photovoltaic substations, thiab lub zog cia.
Nws yog ib qho tsim nyog sau cia tias thaj tsam ntawm siab -voltage switchgear tsis zoo li qub tab sis txuas ntxiv nthuav dav nrog kev txhim kho thev naus laus zis thiab kev thov thov. Piv txwv li, ib puag ncig tus phooj ywg lwm txoj hauv kev rau roj- hluav taws xob hloov pauv, cov kev sib txuas ntse ntse, thiab cov keyboards tshwj xeeb tsim nyog rau qhov chaw huab cua (qhov siab siab, huab cua txias, muaj zog corrosion) tau maj mam muab tso rau hauv daim ntawv thov, muab ntau txoj hauv kev rau daim phiaj hluav taws xob los daws cov teeb meem sib txawv.
Nyob rau hauv cov ntsiab lus, lub Scope ntawm high-voltage switchgear yog muaj xws li voltage theem, functional categories, structural forms, thiab daim ntawv thov teb, npog ntau yam scenarios los ntawm nruab nrab-voltage tis mus rau ultra-siab-voltage kis, thiab los ntawm ib txwm zog fais fab kev sib txuas rau tshiab. Kev xaiv tsim nyog thiab teeb tsa nyob rau hauv qhov kev nthuav dav no tsis yog tsuas yog ua tau raws li cov kev xav tau ntawm kev ua haujlwm tam sim no tab sis kuj tseem tsim lub hauv paus ruaj khov rau yav tom ntej kev txawj ntse thiab ntsuab kev loj hlob ntawm daim phiaj hluav taws xob.