Hauv lub zog faib hluav taws xob ntawmcov khoom siv hluav taws xob siab,Tsis tas li cov khoom siv tseem ceeb xws li cov txee nkag, cov txee pub mov, thiab cov txee tiv thaiv av, lub txee PT yog ib qho khoom siv pabcuam tseem ceeb uas tsis pom tseeb tab sis tseem ceeb. Cov neeg feem coob tsom mus rau kev tsim hluav taws xob thiab kev sib txuas ntawm cov khoom siv hluav taws xob siab, thaum tsis quav ntsej txog lub luag haujlwm tseem ceeb ntawm cov txee PT hauv kev ua kom muaj kev nyab xeeb, ruaj khov, thiab ua haujlwm raug ntawm cov khoom siv hluav taws xob. Hais yooj yim, lub txee PT yogchav tsev tseem ceeb rau kev tau txais cov teeb liab voltage, kev saib xyuas, kev tiv thaiv thiab kev muab hluav taws xob of cov khoom siv hluav taws xob siabNws ua haujlwm ua tus choj ntawm lub kaw lus tswj hwm theem ob thiab lub voj voog tseem ceeb ntawm lub tshuab, hu ua "neural center" ntawm lub kaw lus tsim hluav taws xob siab.
Lub hauv paus tseem ceeb ntawm lub txee PT yog Lub Potential Transformer (PT). Ua haujlwm raws li lub hauv paus ntsiab lus ntawm electromagnetic induction, nws txo qhov hluav taws xob siab ntawm 10kV, 35kV thiab lwm yam theem tso tawm los ntawm cov khoom siv hluav taws xob mus rau lub teeb liab qis qis ntawm 100V, thaum paub txog kev cais hluav taws xob ntawm cov kab ke hluav taws xob siab thiab qis. Qhov no tshem tawm cov kev pheej hmoo kev nyab xeeb ntawm kev kuaj pom hluav taws xob siab ncaj qha thiab muab cov teeb liab hluav taws xob txheem rau ntau yam twj paj nruag, cov khoom siv tiv thaiv thiab cov kab ke tswj hwm, tsim lub hauv paus tseem ceeb rau txhua yam haujlwm ntawm lub txee PT.
I. Cov Qauv Tseem Ceeb ntawm PT Txee: Me me thiab Ua Haujlwm Tau Zoo
Cov txee PT uas phim nrog cov khoom siv hluav taws xob siab muaj cov qauv me me thiab kev teeb tsa meej, hloov kho rau cov yam ntxwv ua haujlwm ntawm cov khoom siv hluav taws xob suav nrog kev ua haujlwm tas mus li, kev sib txuas sib txuas ntau zaus thiab kev hloov pauv loj ntawm cov khoom siv. Txhua lub ntsiab lus tseem ceeb ua lawv txoj haujlwm thiab ua haujlwm sib koom tes. Cov khoom tseem ceeb suav nrog lub plhaub txee, lub tshuab trolley, cov transformers muaj peev xwm, cov fuses hluav taws xob siab, cov khoom ntes hluav taws xob, cov khoom siv tso saib thiab cov xov hlau thib ob.
Raws li lub hauv paus tseem ceeb ntawm kev tau txais, cov transformers muaj peev xwm feem ntau teeb tsa nrog VV kev sib txuas, YY kev sib txuas, qhib-delta kev sib txuas thiab lwm hom kev sib txuas, uas hloov kho rau ntau yam kev xav tau xws li kev ntsuas voltage thiab kev kuaj pom qhov txhaum hauv av. Cov fuses high-voltage muab kev tiv thaiv overload thiab luv luv rau lub voj voog kom tiv thaiv transformer hlawv tawm. Cov khoom siv ntes hluav taws xob nqus cov hluav taws xob siab thiab tiv thaiv cov khoom siv thib ob los ntawm xob laim thiab kev hloov pauv voltage. Cov khoom siv tso saib nyob qhia txog lub xeev nyob ntawm lub txee kom ntseeg tau tias muaj kev nyab xeeb ntawm kev ua haujlwm thiab kev saib xyuas. Cov khoom siv tiav suav nrog kev kuaj pom, kev tiv thaiv thiab kev ceeb toom kev nyab xeeb.
II. Plaub Lub Luag Haujlwm Tseem Ceeb ntawm PT Txee hauvCov Khoom Siv Hluav Taws Xob Siab
1. Kev Ntsuas Hluav Taws Xob Tseeb thiab Kev Saib Xyuas Kev Ua Haujlwm ntawm Chav Ua Haujlwm tiag tiag
Cov cuab yeej siv niaj hnub no tsis tuaj yeem ntes tau qhov hluav taws xob siab uas tawm los ntawm cov khoom siv hluav taws xob siab. Los ntawm kev hloov pauv ntawm cov transformers muaj peev xwm, lub txee PT hloov cov hluav taws xob tsheb npav hluav taws xob siab thawj zaug mus rau hauv lub teeb liab qis qis 100V tus qauv, uas tau xa mus rau ntau yam cuab yeej ntsuas xws li voltmeters, fais fab meters, fais fab factor meters thiab hluav taws xob meters.
Cov neeg ua haujlwm thiab cov neeg saib xyuas tuaj yeem tau txais cov yam ntxwv tseem ceeb ntawm kev ua haujlwm hauv lub sijhawm tiag tiag, xws li qhov hluav taws xob tso zis ntawm chav tsev, lub zog thauj khoom, kev siv hluav taws xob thiab qhov ntsuas hluav taws xob, kom nkag siab txog qhov xwm txheej ua haujlwm ntawm chav tsev. Lub caij no, cov PTs siab (Chav Kawm 0.2) ua tau raws li qhov yuav tsum tau ua ntawm kev ntsuas hluav taws xob, muab lub hauv paus txhim khu kev qha rau cov ntaub ntawv hluav taws xob thiab kev suav nyiaj siv hluav taws xob. Lawv zam kev teeb meem kev ua haujlwm thiab kev saib xyuas thiab kev daws teeb meem los ntawm kev ntsuas qhov sib txawv, ua haujlwm ua "lub qhov muag" rau kev saib xyuas kev ua haujlwm txhua hnub ntawm cov tshuab hluav taws xob.
2. Txhawb Kev Sib Txuas Lus Hauv Chav thiab Kev Sib Txuas Lus Hauv Grid kom Paub Tseeb tias Kev Ua Haujlwm Zoo thiab Ruaj Khoov
Feem ntau cov tshuab hluav taws xob muaj zog siab xav tau kev ua haujlwm sib luag ntawm ntau lub units lossis kev tsim hluav taws xob txuas nrog lub grid nrog lub grid fais fab siab.Kev sib dhos ua ke thiab kev sib txuas ntawm lub network yog ib qho ntawm cov kev sib txuas tseem ceeb tshaj plaws thiab muaj kev pheej hmoo siab tshaj plaws hauv kev ua haujlwm ntawm chav tsev, thiab lub txee PT ua haujlwm ua lub hauv paus lav rau kev ua haujlwm sib dhos.
Lub kaw lus tswj tsis tuaj yeem txheeb xyuas cov kev ntsuas ntawm lub tsheb npav hluav taws xob siab. Nws vam khom cov teeb liab hluav taws xob raug uas tau sau los ntawm lub txee PT los sib piv peb qhov tseem ceeb (qhov loj ntawm lub zog hluav taws xob, zaus thiab theem) ntawm chav tsev txuas nrog lub grid thiab lub tsheb npav ua haujlwm hauv lub sijhawm tiag tiag. Lub kaw lus yuav txiav txim siab tias cov xwm txheej kev sib txuas ntawm lub grid tau ua tiav thiab kaw ruaj khov tsuas yog thaum tag nrho peb qhov kev ntsuas sib xws nrog tus qauv. Yog tsis muaj kev kuaj xyuas tseeb ntawm PT txee, cov kev ntsuas kev sib txuas ntawm lub grid tsis tuaj yeem raug calibrated meej, uas yuav ua rau muaj kev cuam tshuam rau kev sib txuas ntawm lub grid thiab cov hluav taws xob ntau dhau. Hauv cov xwm txheej hnyav, nws yuav hlawv cov generator windings, ua puas tsuaj rau cov khoom siv faib hluav taws xob thiab ua rau muaj qhov yuam kev loj ntawm lub zog. Yog li ntawd, lub txee PT yog qhov tseem ceeb rau kev ua haujlwm sib luag zoo thiab kev sib txuas ntawm lub grid ruaj khov ntawm cov chav tsev hluav taws xob siab.
3. Muab Cov Qauv rau Kev Tiv Thaiv Relay los Tsim Kom Muaj Kev Nyab Xeeb Rau Cov Chav
Qhov no yog qhov tseem ceeb tshaj plaws ntawm kev nyab xeeb ntawm PT txee thiab lub luag haujlwm tseem ceeb uas sib txawv ntawm lawv cov khoom siv ntsuas ib txwm muaj.Cov khoom siv hluav taws xob siabfeem ntau yuav muaj qhov tsis zoo xws li overvoltage, undervoltage, poob voltage thiab single-phase grounding thaum lub sijhawm ua haujlwm. Yog tias tsis ua raws li cov kev tsis zoo no raws sijhawm yuav ua rau cov khoom siv hauv paus puas tsuaj, ua rau hluav taws xob tsis ua haujlwm, cov khoom siv hlawv thiab txawm tias muaj xwm txheej kev nyab xeeb. Txhua txoj haujlwm tiv thaiv raws li voltage nyob ntawm cov cim sampling ntawm PT txee.
Nrog rau cov transformers uas muaj ntau hom kev sib txuas, PT cabinets paub txog kev saib xyuas thiab tiv thaiv qhov txhaum tag nrho. Ua ntej, kev tiv thaiv overvoltage thiab undervoltage saib xyuas qhov hloov pauv ntawm lub tsheb npav voltage hauv lub sijhawm tiag tiag thiab ua rau muaj kev tiv thaiv tripping sai sai thaum lub voltage tshaj qhov kev nyab xeeb, yog li tiv thaiv cov khoom siv rwb thaiv tsev tawg los ntawm qhov hluav taws xob siab thiab cov khoom siv load faults los ntawm qhov hluav taws xob qis. Qhov thib ob, kev tiv thaiv poob-ntawm-voltage xauv lub xeev khoom siv thaum muaj hluav taws xob tsis ua haujlwm sai ntawm lub zog hluav taws xob grid lossis units, zam kev cuam tshuam faults los ntawm kev pib siv khoom siv tom qab rov qab fais fab. Qhov thib peb, xoom-sequence voltage nrhiav tau raws li kev sib txuas qhib-delta txheeb xyuas qhov txhaum ib-theem grounding ntawm lub system, pab nrhiav cov ntsiab lus txhaum, txiav cov circuits faulty sai sai thiab tiv thaiv kev nthuav dav ntawm qhov txhaum, tiv thaiv kev nyab xeeb ntawm cov generator teeb tsa thiab cov kab ke faib hluav taws xob.
4. Muab Lub Hwj Chim Pab Txhawb Nqa Low-Voltage kom Ua Tau Raws Li Cov Kev Cai Siv thiab Kev Txij Nkawm Hauv Chav Khoos Phis Tawj
Muaj ntau yam khoom siv hluav taws xob tsawg rau kev tswj, teeb pom kev zoo thiab kev saib xyuas hauv chav tsim hluav taws xob siab. Lub txee PT tuaj yeem siv qhov hluav taws xob tsawg hloov pauv ua lub zog pabcuam ruaj khov rau chav khoos phis tawj, muab zog rau cov voj voog tswj hwm thib ob, teeb qhia teeb liab, cov modules saib xyuas chaw taws teeb thiab cov khoom siv me me ntawm lub txee.
Piv nrog cov khoom siv fais fab sab nraud ywj pheej, lub zog uas PT txee muab los ntawm lub tshuab hluav taws xob ntawm lub tsheb npav, uas muaj kev sib dhos thiab kev ruaj khov siab dua. Nws ua kom muaj kev muab hluav taws xob tas mus li ntawm lub kaw lus tswj hwm theem ob hauv txhua qhov xwm txheej ua haujlwm xws li kev pib thiab kaw lub tshuab, qhov tsis ua haujlwm thiab kev sib txuas ntawm lub network, thiab lav qhov kev ua haujlwm online puv sijhawm ntawm kev tswj hwm lub tshuab, lub tswb ceeb toom qhov tsis ua haujlwm thiab kev xa cov ntaub ntawv, muab kev txhawb nqa fais fab yooj yim rau kev ua haujlwm tsis siv neeg thiab kev ua haujlwm & kev saib xyuas kev saib xyuas ntawm cov khoom siv hluav taws xob.
III. Cov Ntsiab Lus Tseem Ceeb ntawm Kev Ua Haujlwm thiab Kev Txij Nkawm ntawm PT Cabinets
Raws li lub hauv paus ntawm kev pom thiab kev tiv thaiv ntawm cov tshuab hluav taws xob siab, lub xeev ua haujlwm ntawm PT txee ncaj qha txiav txim siab qhov ruaj khov ntawm chav tsev. Kev ua haujlwm txhua hnub thiab kev saib xyuas tsom mus rau peb lub ntsiab lus tseem ceeb. Ua ntej, tsis tu ncua calibrate qhov tseeb ntawm cov transformers muaj peev xwm kom ntseeg tau tias qhov tseeb voltage sampling thiab metering cov ntaub ntawv, thiab zam kev sib txuas grid tsis ua haujlwm thiab kev tiv thaiv tsis raug los ntawm kev hloov pauv parameter. Qhov thib ob, tshuaj xyuas lub xeev ntawm fuses, surge arresters thiab wiring terminals, thiab hloov cov khoom qub thiab tsis ua haujlwm raws sijhawm kom tiv thaiv transformer hlawv tawm vim overload thiab cov khoom siv tawg los ntawm surge voltage. Qhov thib peb, khaws lub txee qhuav thiab huv si kom tsis txhob muaj kev puas tsuaj ntawm rwb thaiv tsev thiab luv luv-circuit faults los ntawm av noo thiab hmoov av.
IV. Cov Lus Qhia Luv: Txee Me Me Uas Muaj Lub Ntsiab Lus Tseem Ceeb
Txawm hais tias me me thiab tsis koom nrog ncaj qha rau hauv kev xa hluav taws xob tseem ceeb ntawm kev tsim hluav taws xob thiab kev sib kis, lub txee PT yog lub hauv paus rauKev saib xyuas kom raug, kev sib txuas ntawm lub network kom zoo, kev tiv thaiv qhov txhaum thiab kev muab hluav taws xob pabntawm cov khoom siv hluav taws xob siab. Nws daws tau peb qhov teeb meem tseem ceeb: cov cim hluav taws xob siab tsis pom, cov qauv tsis muaj rau kev tiv thaiv lub kaw lus hluav taws xob siab, thiab cov ntaub ntawv qhia tsis muaj rau kev sib txuas ntawm lub network, ua haujlwm ua qhov lav rau kev ua haujlwm zoo, ruaj khov thiab tsis siv neeg ntawm cov khoom siv hluav taws xob siab.
Lub txee PT ua lub luag haujlwm tseem ceeb hauv kev tsim hluav taws xob txhua hnub, kev ua haujlwm sib luag ntawm ntau lub units thiab kev tiv thaiv qhov teeb meem thaum muaj xwm txheej ceev. Kev paub txog cov ntsiab cai ua haujlwm thiab kev ua haujlwm & kev txij nkawm tseem ceeb ntawm PT txee yog qhov tseem ceeb rau kev ua kom zoo dua kev ua haujlwm thiab kev tswj hwm kev txij nkawm ntawm cov generators siab voltage thiab zam kev ua txhaum hluav taws xob.
Lub sijhawm tshaj tawm: Lub Rau Hli-03-2026
