Kev nyab xeeb kev ua haujlwm thiab kev pabcuam lub neej ntawmqhuav hom transformerfeem ntau nyob ntawm kev nyab xeeb thiab kev ntseeg siab ntawm transformer winding rwb thaiv tsev. Cov cua kub cua kub tshaj qhov rwb thaiv tsev tiv thaiv qhov kub thiab qhov rwb thaiv tsev raug puas tsuaj, uas yog ib qho ntawm cov laj thawj tseem ceeb uas transformer tsis tuaj yeem ua haujlwm ib txwm. Yog li ntawd, kev saib xyuas ntawm lub transformer qhov kev khiav hauj lwm kub thiab nws lub tswb tswj yog ib qho tseem ceeb heev.
⑴ Ntxuam tswj tsis siv neeg: Lub teeb liab ntsuas kub yog ntsuas los ntawm Pt100 thermistor embedded nyob rau hauv qhov kub tshaj plaws ntawm qhov qis-voltage winding. Lub transformer load nce, kev khiav hauj lwm kub nce, thaum lub winding kub mus txog 110 degree, lub kaw lus cia li pib kiv cua txias; Thaum cov cua kub cua kub qis li 90 ° C, lub kaw lus cia li nres lub kiv cua.
(2) Overtemperature tswb thiab tripping: lub winding lossis core kub teeb liab yog sau los ntawm PTC nonlinear thermal resistance embedded nyob rau hauv qis-voltage winding. Thaum qhov kub ntawm lub transformer winding txuas ntxiv mus, yog tias nws nce mus txog 155 degree, lub kaw lus yuav tso tawm lub teeb liab overtemperature; Yog tias qhov ntsuas kub tseem nce mus txog 170 ° C, lub tshuab hloov pauv tsis tuaj yeem ua haujlwm txuas ntxiv, nws yog qhov tsim nyog yuav tsum xa cov teeb liab dhau mus rau qhov kev tiv thaiv thib ob, thiab lub tshuab hloov pauv yuav tsum tau nrawm nrawm.
⑶ Cov khoom siv ntsuas kub: Pt100 thermistor embedded nyob rau hauv qis-voltage winding ntsuas qhov kub hloov pauv tus nqi, thiab ncaj qha qhia qhov kub ntawm txhua theem winding (peb-theem kev tshuaj xyuas thiab qhov siab tshaj plaws, thiab tuaj yeem sau cov keeb kwm kub siab tshaj plaws), qhov siab tshaj plaws Qhov kub thiab txias tuaj yeem tso tawm nrog 4 ~ 20mA analog, yog tias koj xav tau xa mus rau qhov chaw nyob deb (nruab deb li 1200m) lub computer, koj tuaj yeem ntxiv lub computer interface, 1 transmitter, txog li 31 transformers tuaj yeem soj ntsuam ib txhij. Lub tswb overtemperature thiab tripping ntawm lub kaw lus kuj tuaj yeem ua los ntawm Pt100 thermistor teeb liab, uas ntxiv kev txhim kho kev ntseeg siab ntawm kev tiv thaiv qhov kub thiab txias.
Kev tiv thaiv hom
Raws li kev siv cov yam ntxwv ib puag ncig thiab kev tiv thaiv kev tiv thaiv, qhuav transformer tuaj yeem xaiv qhov sib txawv ntawm qhov sib txawv.
IP20 tiv thaiv lub plhaub feem ntau yog siv los tiv thaiv cov khoom txawv teb chaws uas muaj txoj kab uas hla ntau dua 12 hli thiab cov tsiaj me xws li nas, nab, miv thiab finches los ntawm kev nkag mus, ua rau muaj qhov tsis zoo xws li luv luv hluav taws xob tsis ua haujlwm, thiab muab kev nyab xeeb rau kev tiv thaiv. nyob ib feem. Yog tias lub tshuab hloov pauv yuav tsum tau muab tso rau sab nraum zoov, koj tuaj yeem xaiv IP23 tiv thaiv vaj tse, ntxiv rau qhov saum toj no IP20 kev tiv thaiv nta, tab sis kuj tseem tiv thaiv cov dej ntws hauv 60 degree Lub kaum sab xis ntawm txoj kab ntsug. Txawm li cas los xij, lub plhaub IP23 yuav txo qis lub peev xwm txias ntawm transformer, thiab kev saib xyuas yuav tsum tau them rau qhov txo qis ntawm nws lub peev xwm ua haujlwm thaum xaiv.
Txias hom
Qhuav transformer txias txoj kev yog muab faib ua tej yam ntuj tso cua txias (AN) thiab yuam cua txias (AF). Thaum huab cua txias lawm, lub transformer tuaj yeem khiav tsis tu ncua rau lub sijhawm ntev nyob rau hauv lub peev xwm ntsuas. Thaum yuam cua txias, lub peev xwm ntawm lub tshuab hluav taws xob tuaj yeem nce 50%. Haum rau kev ua haujlwm tsis sib xws, lossis kev ua haujlwm kub ceev; Vim qhov loj ntawm qhov poob thiab impedance voltage thaum lub sij hawm overload, nws yog nyob rau hauv ib tug tsis-economic kev lag luam lub xeev, yog li nws yuav tsum tsis txhob muab cia rau hauv tas li overload ua hauj lwm rau lub sij hawm ntev.
Muaj peev xwm tshaj
Lub peev xwm overload ntawm lub transformer qhuav yog hais txog qhov kub thiab txias, lub load ua ntej overload (pib load), rwb thaiv tsev thiab tshav kub dissipation ntawm lub transformer thiab lub sij hawm cua sov tsis tu ncua, thiab lwm yam. Yog hais tias tsim nyog, lub overload nkhaus ntawm lub qhuav transformer tau tau txais los ntawm cov chaw tsim khoom.
Yuav ua li cas coj kom zoo dua ntawm nws lub peev xwm overload? Tus kws sau ntawv tso ob lub ntsiab lus rau kev siv:
(1) Thaum xaiv los xam lub peev xwm transformer, nws tuaj yeem raug txo kom tsim nyog: tag nrho xav txog qhov muaj feem cuam tshuam rau lub sij hawm luv luv ntawm qee qhov dov, vuam thiab lwm yam khoom siv - sim siv lub zog dhau ntawm cov khoom siv hluav taws xob qhuav kom txo tau lub peev xwm transformer. ; Rau qee qhov chaw uas muaj qhov tsis sib xws, xws li thaj chaw nyob feem ntau yog rau hmo ntuj teeb pom kev zoo, kev coj noj coj ua thiab kev lom zem, thiab cov khw hauv khw feem ntau yog cov cua txias thiab nruab hnub teeb pom kev zoo, nws lub peev xwm overload tuaj yeem siv tag nrho, thiab lub peev xwm transformer tuaj yeem raug txo kom tsim nyog, yog li. tias nws lub sijhawm ua haujlwm tseem ceeb yog nyob rau ntawm qhov chaw thau khoom lossis lub sijhawm luv luv.
(2) tuaj yeem txo cov peev txheej lossis cov naj npawb ntawm cov units: nyob rau hauv qee qhov chaw, qhov cia coefficient ntawm transformer yog siab dua, ua rau lub transformer xaiv los ntawm qhov project loj muaj peev xwm thiab ntau units. Lub peev xwm overload ntawm qhuav transformation tuaj yeem compressed thaum xav txog nws qhov peev xwm cia. Nws kuj tseem tuaj yeem txo qis thaum txiav txim siab tus naj npawb ntawm cov khoom seem. Thaum lub transformer nyob rau hauv overloading, nws yog ib qho tsim nyog yuav tsum tau xyuam xim saib xyuas nws cov kev khiav hauj lwm kub: yog hais tias qhov kub nce mus txog 155 ° C (muaj lub tswb), yuav tsum tau coj mus rau hauv tus account txo load (tsawg dua ib co me me loads) los xyuas kom meej lub load. kev nyab xeeb fais fab mov ntawm lub ntsiab load.
Daim ntawv thov xwm txheej
Qhuav transformer vim tsis muaj roj, tsis muaj hluav taws kub, tawg, muaj kuab paug thiab lwm yam teeb meem, yog li hluav taws xob cov cai, cov kev cai, thiab lwm yam tsis tas yuav tsum tau qhuav transformer muab tso rau hauv ib chav tsev sib cais. Kev poob thiab suab nrov raug txo qis rau qib tshiab, tsim cov xwm txheej rau lub transformer thiab lub vaj huam sib luag qis kom muab tso rau hauv tib chav faib khoom.
Tam sim no, cov khoom tsim tawm txhua xyoo ntawm cov khoom siv hluav taws xob rwb thaiv tsev qhuav hauv Suav teb tau mus txog 10,000 MVA, dhau los ua ib lub tebchaws uas muaj ntau tshaj plaws thiab muag khoom ntawm cov tshuab ziab khaub ncaws qhuav hauv ntiaj teb. Qhuav transformers yog tam sim no dav siv nyob rau hauv lub hwj chim chaw nres tsheb, factories, tsev kho mob thiab lwm yam yuav luag tag nrho cov hluav taws xob. Nrog rau kev nce qib thiab daim ntawv thov ntawm SC (B) 9 series nrog lub suab qis (kev faib tawm cov suab nrov transformer hauv qab 2500kVA tau raug tswj tsis pub dhau 50dB) thiab kev txuag hluav taws xob (tsis muaj kev thauj khoom poob los ntawm 25%), qhov ntsuas kev ua tau zoo thiab kev tsim tshuab ntawm qhuav transformers. nyob rau hauv Tuam Tshoj tau mus txog lub ntiaj teb no cov qib siab.
