Cov yam ntxwv thiab daim ntawv thov ntawm Dry Type Transformer

Tam sim no, Tuam Tshoj cov tshuab hluav taws xob qhuav feem ntau yog peb-theem khov kho SC series, xws li: SCB9 series peb-theem winding transformer, SCB10 series peb-theem foil transformer SCB9 series peb-theem foil transformer. Nws qib voltage feem ntau yog nyob rau hauv qhov ntau ntawm 6-35kV, lub peev xwm siab tshaj plaws txog li 25MVA. Cov tshuab hluav taws xob qhuav feem ntau yog muab faib ua impregnated qhuav transformer thiab resin qhuav transformer ob pawg.

1. Impregnated qhuav hom transformer

Cov hlau ntawm lub impregnated qhuav hom transformer hauv Suav teb yog npog nrog iav hlau, thiab lub ncoo yog kub nias nrog cov khoom siv insulating sib xws. Nws feem ntau yog siv rau hauv cov chaw nres tsheb hydropower thiab cov tsev siab nrog kev tiv thaiv hluav taws zoo.

Vim yog qhov sib txawv ntawm cov xim impregnating, transformer rwb thaiv tsev tau muab faib ua B, F, H, C, lub ntsiab thiab ntsug rwb thaiv tsev (lub ntsiab rwb thaiv tsev ntawm winding thiab winding thiab ntawm winding thiab core rwb thaiv tsev).

Kev rwb thaiv tsev ntsug yog hais txog kev rwb thaiv tsev ntawm ntau qhov sib txawv thiab ntau qhov ntawm lub tshuab hluav taws xob winding nrog ntau lub peev xwm sib txawv, feem ntau suav nrog kev ua tau zoo ntawm kev rwb thaiv tsev ntawm kev tig, txheej thiab ntu ntawm lub winding. Cua yog siv ua cov khoom rwb thaiv tsev.

Hom transformer no raug cuam tshuam los ntawm ib puag ncig dua li cov resin hom qhuav transformer, qhov tsos thiab qhov hnyav kuj loj dua, cov zis hauv tsev thiab txawv teb chaws feem ntau txo qis.

Muaj cov foob kawg ntawm ob qho kawg ntawm qhov winding, tsis ntshai dej ntws, muaj zog tiv thaiv hluav taws, kev tiv thaiv hluav taws hauv qhov hluav taws qhib ntawm 750 ℃, yog hom tshiab ntawm cov tshuab hluav taws xob qhuav.1.2 Resin qhuav hom transformer sawv cev rau hnub no cov khoom lag luam hauv tsev resin casting transformer ua rau muaj peev xwm faib ua peb pawg hauv qab no.

Hom thawj, hu ua hlau qhov txhab casting transformer, nws qhov hluav taws xob siab yog hlau qhov txhab tawg lub tog raj kheej casting, qhov hluav taws xob qis yog hlau qhov txhab lub tog raj kheej (lossis segmented lub tog raj kheej) casting; Li Qian, Shaanxi xeev Electric Power (pawg) Co., LTD. Nco ntsoov rau tsis muaj filler casting.

Hom thib ob, hu ua foil-wound casting transformer, nws qhov hluav taws xob siab yog segmented foil-wound casting hom, qhov hluav taws xob qis yog tooj liab foil (lossis txhuas foil) winding hom; casting yog cam khwb cia nrog filler.

Hom thib peb, hom siab rau lub tog raj kheej rau kev rhuav tshem cov hlau xaim, hom qis siab tooj liab ntawv ci (lossis ntawv ci txhuas) hom winding; Casting yog casting tsis muaj filler.

Peb hom khoom saum toj no muaj lawv tus kheej cov yam ntxwv hauv kev tsim khoom thiab kev ua tau zoo ntawm cov khoom, thiab tam sim no nyob hauv qee qhov kev lag luam hauv kev ua lag luam. Hauv tsab xov xwm no, peb tsom mus rau kev sib tham txog cov hlau txuas hluav taws xob.

2. Hlau txhab cam khwb cia transformer

2.1. Cov yam ntxwv ntawm cov qauv

Hauv lub chaw tsim hluav taws xob thib ob ntawm Baoji, xeev Shaanxi, cov transformers qhuav siv hauv lub Hoobkas yog cov hlau qhwv pouring transformers, nrog qib voltage ntawm 6 kV, muaj peev xwm ntawm 100 kVA txog 1600 kVA, thiab kev teeb tsa sab hauv tsev.

Cov xov hluav taws xob siab thiab qis ntawm cov khoom yog ua los ntawm cov hlau tooj liab, qhov txhab tag nrho, iav fiber reinforced, rwb thaiv tsev nyias, resin tsis muaj filler, impregnated pouring nyob rau hauv lub xeev nqus tsev, thiab kho raws li qhov kub tshwj xeeb curing nkhaus.

Lub winding siab voltage siv cov qauv tshwj xeeb segmented cylinder, thiab lub winding qis voltage siv ntau txheej cylinder hom, segmented cylinder hom lossis tshwj xeeb segmented cylinder hom raws li qib voltage.

2.2 Cov yam ntxwv ntawm kev siv tshuab

2.2.1 qhov cuam tshuam tsis kam hlau qhov txhab pouring ntawm transformer hv winding adopts tshwj xeeb sectional cylindrical qauv, cov qauv no yog raws li feem ntau seem bobbin winding, ordinary subsection lub tog raj kheej hom ob leeg tau txais qhov zoo ntawm bobbin winding cuam tshuam tsis kam, thiab daws qhov bobbin winding txheej ntawm high voltage ntawm qhov tsis sib haum xeeb, yog ib qho zoo tagnrho winding qauv, Nws yog feem ntau hu ua tsis-resonant winding qauv.

Piv nrog rau lub tog raj kheej segmented ib txwm muaj, lub tog raj kheej segmented tshwj xeeb tuaj yeem txo qhov voltage ntawm cov khaubncaws sab nraud povtseg, txhim kho qhov faib voltage, thiab txhim kho lub zog cuam tshuam kom tiv taus qhov atmospheric overvoltage thiab kev ua haujlwm overvoltage.

Qhov kev cuam tshuam tsis yog tsuas yog cuam tshuam nrog cov qauv ntawm lub winding, tab sis kuj nyob ntawm qhov zoo ntawm lub winding thiab cov khoom hluav taws xob ntawm cov khoom siv insulating.

Tom qab winding winding ntawm cov khoom tiav lawm, nws yog poured nrog ntshiab resin nyob rau hauv lub xeev nqus tsev, thiab tsis muaj filler ntxiv, yog li ntawd qhov kev ua tau zoo ntawm cov resin tsis txo qis.

Thiab vim tias qhov winding yog qhov txhab los ntawm hlau, cov resin tuaj yeem ua rau lub winding tag nrho, tsis hais los ntawm qhov axial lossis radial ntawm lub winding, thiab tsis muaj npuas sab hauv.

Abstract: Daim ntawv no qhia txog kev faib tawm thiab cov yam ntxwv ntawm cov transformer qhuav, thiab tsom mus rau cov yam ntxwv ntawm cov qauv ntawm cov hlau xaim pouring transformer, cov yam ntxwv kev siv tshuab, lub kaw lus txias, lub kaw lus tswj kub thiab lwm yam, sau cov kev cia siab ntawm kev txhim kho ntawm cov transformer qhuav. Cov lus tseem ceeb: transformer qhuav; Kev faib tawm ntawm cov hlau xaim casting transformer.

Cov tshuaj resin thiab iav fiber muaj cov khoom rwb thaiv tsev zoo, tsis yog tsuas yog ua rau muaj kev cuam tshuam zoo xwb, thiab cov dej tawm hauv zos me me heev.

2.2.2. Muaj zog kho tshuab zoo thiab tiv taus luv luv. Rau cov hlau sib txuas ua ke, tom qab nchuav cov khoom siv nqus tsev, cov roj hmab tuaj yeem ntub ntawm cov khaubncaws sab nraud povtseg, tig thiab ntu ntawm cov xov hlau ib zaug.

Tom qab kho, cov resin, hlau thiab iav fiber raug sib xyaw ua ke kom tsim tau lub cev muaj zog. Cov khoom siv kho tshuab muaj zog ntawm cov qauv txiav txim siab tias cov khoom siv hlau casting muaj kev tiv thaiv luv luv zoo.

Tus coefficient ntawm thermal expansion ntawm cov khoom siv insulating composite uas tsim los ntawm kev kho cov resin thiab iav fiber yog (18 ~ 20) × 10-6 / K, thiab tus coefficient ntawm kev nthuav dav ntawm tooj liab siv hauv winding yog 17 × 10-6 / K, uas yog qhov ze rau ob. Nws tshem tawm qhov kev ntxhov siab ntawm cov neeg tsav tsheb winding thiab cov khoom siv insulating los ntawm kev nthuav dav thermal thiab kev cog lus txias thaum lub sijhawm ua haujlwm ntawm lub transformer. Los ntawm cov hauv paus hniav kom tshem tawm qhov tshwm sim ntawm kev tawg.

Raws li cov khoom raug pov nrog cov resin ntawm qhov siab thiab qis siab thiab cov hlau core yog coated nrog resin, nws muaj zog noo noo thiab corrosion tsis kam. Thaum cov huab cua txheeb ze humidity yog 100%, nws tseem tuaj yeem khiav tau ntev.

Vim tias cov khoom siv rwb thaiv tsev sib xyaw ua ke uas muaj cov tshuaj ntshiab thiab cov iav fiber muaj lub zog hluav taws xob siab heev, qhov tuab ntawm cov khoom rwb thaiv tsev tsuas yog 1.5 ~ 2 hli xwb, uas ua rau qhov ua tau zoo ntawm cov cua sov ntawm qhov chaw winding zoo heev.

2.3. Lub tshuab cua txias thiab kev tiv thaiv

Cov transformers qhuav raug txias los ntawm cua txias ntuj thiab cua txias yuam. Cua txias ntuj raug saws los xyuas kom meej tias lub transformer ua haujlwm ib txwm nyob rau hauv qhov ntsuas load. Cov transformers qhuav siv hauv baoji No.2 fais fab nroj tsuag raug txias los ntawm cua yuam los ntawm radial kiv cua.

Tom qab txias los ntawm kev yuam cua ncig, lub peev xwm ntawm cov transformer qhuav nrog 800 kVA thiab qis dua tuaj yeem nce ntxiv 40%, thiab cov transformer qhuav nrog 800 kVA thiab siab dua tuaj yeem nce ntxiv 50%, thiab tuaj yeem khiav tas li.

Hom transformer qhuav feem ntau yog IP00 kev tiv thaiv, uas yog, tsis muaj plhaub, siv sab hauv tsev, Baoji lub zog thib ob yog siv hom kev tiv thaiv no. Tsis tas li ntawd raws li tus neeg siv xav tau, ntxiv lub plhaub tiv thaiv.

Lub tsev IP20 tiv thaiv kev nkag ntawm cov khoom txawv teb chaws loj dua 12 hli thiab muab kev thaiv rau cov khoom nyob. Thaum kev tiv thaiv IP23 raug saws, ntxiv rau kev ua haujlwm tiv thaiv IP20, nws kuj muaj lub luag haujlwm ntawm kev tiv thaiv dej txaws.

2.4. Lub kaw lus tswj kub

Kev ua haujlwm zoo thiab txhim khu kev qha thiab lub neej ua haujlwm ntawm lub zog transformer feem ntau nyob ntawm qhov kev rwb thaiv tsev zoo thiab txhim khu kev qha ntawm transformer winding. Qhov kub ntawm lub winding tshaj qhov kub rwb thaiv tsev yog ib qho ntawm cov laj thawj tseem ceeb uas ua rau lub rwb thaiv tsev puas tsuaj thiab lub transformer tsis tuaj yeem ua haujlwm li qub.

SC series hlau qhov txhab casting transformer adopts XMTB tsis siv neeg kub tswj kev tiv thaiv system. Ib tug platinum thermal tsis kam kub ntsuas khoom embedded nyob rau hauv thawj tig ntawm lub qis-voltage winding hlau kom tau txais qhov kub nce ntawm lub winding, tso saib qhov kub ntawm peb-theem qis-voltage winding, thiab muab thermal tiv thaiv rau lawv.

Thaum qhov kub thiab txias hloov pauv, thaum lub winding mus txog qhov kub thiab txias txwv, lub tswj kub yuav xa tawm lub teeb liab los tswj lub kiv cua pib (110 ℃), kiv cua nres (90 ℃), lub tswb ceeb toom (120 ℃) ​​thiab mus ncig (145 ℃), yog li cov khoom muaj kev tiv thaiv kev thauj khoom ntau dhau hauv kev ua haujlwm.

SC3 series wirewound casting transformers txais yuav M&C patented technology rau kev kuaj pom qhov kub thiab txias ntawm transformer windings, thiab tsim cov tswj kub uas tuaj yeem ntes tau qhov kub ntawm cov windings ncaj qha, thiab paub txog kev tswj hwm cua txias (AF), overtemperature tswb thiab overtemperature mus ncig ntawm lub transformer.

Tom qab kev debugging ib txwm ntawm lub tshuab tswj qhov kub thiab txias, lub transformer raug muab tso rau hauv kev ua haujlwm hauv network ua ntej, thiab tom qab ntawd lub tshuab tswj qhov kub thiab txias raug siv zog rau kev ua haujlwm. Lub tshuab tswj qhov kub thiab txias nyob rau hauv lub xeev tswj tsis siv neeg, thiab kev kuaj pom qhov kub thiab txias thiab kev tiv thaiv ntawm lub transformer raug ua tiav. Thaum qhov kub ntawm lub winding siab dua 110 ℃, lub tshuab tswj qhov kub thiab txias pib lub kiv cua rau kev yuam kom txias; Yog tias qhov kub ntawm lub winding poob qis dua 90 ℃ nyob rau hauv kev yuam kom cua txias, lub kiv cua nres.

Yog tias qhov kub ntawm qhov winding nce ntxiv, lub tswj qhov kub thiab txias yuav tshaj tawm lub tswb ceeb toom kub dhau (155 ℃) thiab lub teeb liab kub dhau (170 ℃). Thaum lub tswj qhov kub thiab txias tsis ua haujlwm thiab tsis tuaj yeem tshem tawm ib ntus, tshem lub tswj qhov kub thiab txias, lub transformer tuaj yeem ua haujlwm ntxiv, tsuas yog yuav tsum tau saib xyuas thiab xyuas kom meej tias lub transformer nyob rau hauv lub xeev ua haujlwm ib txwm.

3. Kev sib piv ntawm cov transformer qhuav thiab cov roj-immersed transformer

Qhov zoo tseem ceeb thiab tus nqi qis ntawm cov roj-immersed transformers nyuaj rau hloov los ntawm lwm cov transformers. Hauv qhov chaw sab nraum zoov thiab kev tiv thaiv hluav taws ntawm cov chaw dav dav, tam sim no thiab yav tom ntej rau lub sijhawm ntev dua, tseem yuav yog roj immersed transformer.

Tab sis rau cov chaw uas muaj kev tiv thaiv hluav taws kub siab, hom qhuav lossis cov kua uas tsis kub hnyiab thiab cov kua uas tsis kub hnyiab tau siv. Lub transformer qhuav muaj peev xwm ntau dua li cov roj immersed transformer, feem ntau vim tias qhov ceev tam sim no ntawm lub transformer qhuav qis dua, lub peev xwm cua sov loj, thiab lub sijhawm winding tas mus li loj.

Piv nrog rau roj-immersed transformer, qhov kev ua haujlwm rwb thaiv tsev ntawm cov transformer qhuav tau zoo dua. Roj immersed transformer siv ntau qhov chaw, kev teeb tsa sab nraum zoov ntau dua.

Cov khoom siv hluav taws xob qhuav transformer me me, ua haujlwm sab hauv tsev ntau dua. Piv nrog cov roj-immersed transformers, nws raug kev txom nyem los ntawm qhov hluav taws xob tsawg dua, lub taub hau nthwv dej qeeb dua thiab tsawg dua qhov yuav muaj xob laim.

Cov transformers qhuav feem ntau raug tiv thaiv los ntawm cov hlau oxide arresters, uas tsis yog tsuas yog txwv cov atmospheric overvoltage, tab sis kuj txwv cov overvoltage sab hauv.