Lub tshuab hluav taws xob nruab nrab yuav tsim kom muaj ntau qhov sib haum xeeb thaum siv.Lub harmonics yuav tsis tsuas ua rau lub zos nyob rau hauv parallel resonance thiab series resonance ntawm lub hwj chim, tab sis kuj amplify cov ntsiab lus ntawm harmonics thiab hlawv tawm lub capacitor them nyiaj thiab lwm yam khoom siv.Tsis tas li ntawd, cov mem tes tam sim no tseem yuav ua rau muaj qhov tsis zoo hauv cov khoom siv tiv thaiv relay thiab cov khoom siv tsis siv neeg, uas yuav ua rau muaj kev tsis sib haum xeeb hauv kev ntsuas thiab kev txheeb xyuas cov hluav taws xob hluav taws xob.
Hwj chim daim phiaj kev sib haum xeeb muaj kuab paug loj heev.Rau sab nraud ntawm lub zog hluav taws xob, kev sib haum xeeb yuav ua rau muaj kev cuam tshuam loj rau cov khoom siv sib txuas lus thiab cov khoom siv hluav taws xob, thiab kev sib haum xeeb yog qhov teeb meem heev rau cov khoom siv hluav taws xob nruab nrab.Yog li ntawd, kev txhim kho lub zog zoo ntawm qhov nruab nrab zaus qhov cub tau dhau los ua ib feem tseem ceeb ntawm cov lus teb.
Lub tshuab hluav taws xob nruab nrab yog ib qho kev sib faib hluav taws xob hluav taws xob engineering, uas yuav tsim kom muaj ntau qhov kev sib haum xeeb zoo thaum lub sijhawm ua haujlwm, tseem hu ua intermediate zaus furnace harmonics.Nws qhov hnyav hnyav yog 5, 7, 11 thiab 13 zaug.Lub hav zoov ntawm ntau qhov kev txiav txim siab sib haum xeeb yuav ua rau muaj kev phom sij loj rau kev nyab xeeb thiab kev ua haujlwm du ntawm lub zog hluav taws xob engineering thiab cov khoom siv hluav taws xob them nyiaj ntawm tib lub tsheb npav.Lub 6-theem transformer tuaj yeem cuam tshuam qhov thib tsib thiab xya kev sib haum xeeb uas tsim los ntawm qhov nruab nrab zaus qhov cub, tab sis yog tias tsis muaj qhov cuam tshuam los ntawm kev ntsuas, lub kaw lus yuav ua kom muaj kev sib haum xeeb, cuam tshuam rau kev ua haujlwm ruaj khov ntawm lub transformer, thiab tseem ua rau lub tshuab hluav taws xob overheat. thiab kev puas tsuaj.
Yog li ntawd, thaum them nyiaj rau kev sib haum xeeb ntawm qhov nruab nrab zaus induction rauv, yuav tsum tau them nyiaj rau kev tshem tawm cov kev sib haum xeeb, txhawm rau tiv thaiv cov khoom siv nyiaj los ntawm amplifying lub siab-order harmonics.Thaum lub nruab nrab zaus load muaj peev xwm loj, nws yog ib qho yooj yim ua rau tripping kev huam yuaj ntawm lub high voltage kawg ntawm lub substation thiab harmonic cuam tshuam ntawm kev lag luam raws kab.Raws li kev hloov pauv, qhov nruab nrab lub zog ntawm lub tshuab hluav taws xob tsis tuaj yeem ua tau raws li peb lub tuam txhab tus qauv, thiab nws yuav raug nplua txhua lub hlis.
Nkag siab txog kev phom sij ntawm lub tshuab hluav taws xob ntau zaus hauv kev siv cov kev tswj hwm kev sib raug zoo, yuav ua li cas kom ntseeg tau tias kev ua haujlwm zoo thiab kev pabcuam lub neej ntawm cov khoom siv, thiab txhim kho kev ua haujlwm zoo.
Ua ntej, Cov lus piav qhia luv luv ntawm kev tiv thaiv ib puag ncig thiab kev txuag hluav taws xob ntawm kev sib txuas thiab series nruab nrab zaus induction rauv fais fab mov circuits:
1. Piv nrog rau cov series los yog parallel Circuit Court, tam sim no ntawm lub load Circuit Court yog txo los ntawm 10 zaug mus rau 12 zaug.Nws tuaj yeem txuag tau 3% ntawm kev siv hluav taws xob siv.
2. Lub series Circuit Court tsis tas yuav muaj lub peev xwm loj lim reactor, uas tuaj yeem txuag tau 1% ntawm kev siv hluav taws xob.
3. Txhua qhov induction melting rauv yog nws tus kheej powered los ntawm ib pawg ntawm inverters, thiab tsis tas yuav nruab ib lub tshuab hluav taws xob siab tam sim no rau kev hloov, yog li txuag 1% ntawm kev siv hluav taws xob.
4. Rau lub series inverter fais fab mov, tsis muaj lub hwj chim concave ib feem nyob rau hauv lub zog ua hauj lwm tus yam ntxwv nkhaus, uas yog, ib feem ntawm lub hwj chim poob, yog li ntawd lub melting lub sij hawm yog ho txo, qhov tso zis yog zoo dua, lub hwj chim tau txais kev cawmdim, thiab kev tiv thaiv ib puag ncig thiab txuag hluav taws xob yog 7%.
Thib ob, tiam thiab kev puas tsuaj ntawm nruab nrab zaus furnace harmonics:
1. Parallel intermediate zaus hluav taws xob rauv hluav taws xob qhov hluav taws xob yog qhov loj tshaj plaws nyob rau hauv lub hwj chim system.Feem ntau hais lus, 6-pulse nruab nrab zaus hluav taws xob qhov cub feem ntau tsim 6 thiab 7 tus yam ntxwv sib haum xeeb, thaum 12-mem tes inverter feem ntau ua rau 5, 11 thiab 13 yam ntxwv sib haum xeeb.Feem ntau, 6 pulses yog siv rau me me converter units thiab 12 pulses yog siv rau loj converter units.Lub high-voltage sab ntawm ob lub cub tawg transformers txais cov theem-hloov ntsuas xws li txuas ntxiv delta los yog zigzag kev twb kev txuas, thiab siv ob sab ob sab hnub qub-lub kaum sab xis kev twb kev txuas los tsim ib tug 24-pulse intermediate zaus fais fab mov los txo qhov cuam tshuam ntawm harmonics ntawm daim phiaj zog.
2. Qhov nruab nrab zaus induction rauv yuav tsim kom muaj kev sib haum xeeb ntau thaum siv, uas yuav ua rau muaj kev sib haum xeeb loj heev rau daim phiaj hluav taws xob.Harmonics txo qhov kev sib kis thiab kev siv hluav taws xob hluav taws xob, ua rau cov khoom siv hluav taws xob overheat, ua rau muaj kev co thiab suab nrov, embrittle txheej rwb thaiv tsev, ua rau lub neej luv luv, thiab tseem ua rau tsis ua hauj lwm lossis kub hnyiab.Harmonics yuav ua rau lub zos series resonance los yog thaum uas tig mus resonance nyob rau hauv lub hwj chim mov system, uas yuav ua rau kom cov harmonic cov ntsiab lus thiab ua rau capacitor them nyiaj thiab lwm yam khoom mus hlawv tawm.
Thaum tsis tuaj yeem siv cov nyiaj them rov qab hluav taws xob, qhov kev nplua hluav taws xob reactive yuav tshwm sim, ua rau nce nqi hluav taws xob.Pulse tam sim no tseem tuaj yeem ua rau muaj kev cuam tshuam ntawm cov khoom siv tiv thaiv relay thiab cov khoom siv tsis siv neeg, uas tuaj yeem ua rau muaj kev tsis sib haum xeeb hauv kev ntsuas thiab kev txheeb xyuas cov hluav taws xob hluav taws xob.Rau sab nraud ntawm cov khoom siv hluav taws xob, cov mem tes tam sim no yuav muaj kev cuam tshuam loj rau cov khoom siv sib txuas lus thiab cov khoom siv hluav taws xob, yog li kev txhim kho lub zog zoo ntawm qhov nruab nrab zaus induction rauv tau dhau los ua qhov tseem ceeb tshaj plaws.
Post lub sij hawm: Apr-12-2023