Lub tshuab hluav taws xob ntawm lub tsev kho mob belongs rau pej xeem system, uas yog lub hwj chim guarantee ntawm tag nrho cov cheeb tsam.Kev tsim kho tsev kho mob feem ntau siv hom semi-centralized, thiab cov khoom siv hluav taws xob yog nyob rau hauv chav kawm ntawm load.Nws hom hluav taws xob tseem ceeb suav nrog: teeb pom kev zoo, lub tshuab cua txias, kev kho mob hluav taws xob, teeb pom kev zoo thaum muaj xwm ceev.
Lub teeb pom kev zoo thiab lub tshuab cua txias yog qhov tseem ceeb ntawm lub zog thauj khoom hauv ntau hom kev siv hluav taws xob hauv tsev kho mob, uas yuav ua rau muaj kev sib haum xeeb loj rau lub tsev kho mob daim phiaj hluav taws xob thaum siv.Vim yog siv cov khoom siv hluav taws xob tshiab xws li X-ray tshuab, sib nqus resonance tshuab MRI, CT tshuab, thiab lwm yam., kev siv hluav taws xob hloov hluav taws xob, UPS tsis cuam tshuam thiab lwm yam ntau ntawm cov khoom tsis sib xws, kuj tsim cov lus pom zoo rau daim phiaj zog.
Lub tsev kho mob muaj kev siv hluav taws xob siab, thiab cov khoom siv hauv lub cev muaj kev nyab xeeb thiab txhim khu kev qha yog qhov tseem ceeb.Vim yog kev siv loj ntawm cov khoom siv tsis yog hauv nruab nrab, cov yam ntxwv sib haum xeeb ntawm 3rd, 5th thiab 7th kev txiav txim yog tsim nyob rau hauv tsev kho mob fais fab network.Harmonics ncaj qha cuam tshuam rau kev ua haujlwm ruaj khov ntawm cov cuab yeej kho mob precision, thiab kev sib sau ntawm 3 harmonics ntawm cov kab nruab nrab ua rau cov cua sov hauv nruab nrab kab, uas ua rau muaj kev nyab xeeb ntawm lub tsev kho mob daim phiaj hluav taws xob.
2. Txhais thiab tiam ntawm harmonics
Lub ntsiab lus ntawm kev sib haum xeeb: Fourier series decomposition ntawm lub sij hawm uas tsis yog-linear sinusoidal kom muaj nuj nqis, ntxiv rau kom tau txais tib yam khoom raws li qhov yooj yim zaus ntawm daim phiaj hluav taws xob, tab sis kuj muaj cov khoom siv ntau dua li qhov sib txuam ntau ntawm cov zaus ntawm lub zog. daim phiaj, qhov no ntawm cov hluav taws xob hu ua harmonics.
Generation ntawm harmonics: Thaum tam sim no ntws los ntawm lub load, muaj ib tug nonlinear kev sib raug zoo nrog lub load voltage, uas tsim ib tug non-sinusoidal tam sim no, ua rau harmonics.
3. Kev puas tsuaj ntawm harmonics
1) Harmonics ua rau lub zog tsis zoo thiab cov khoom siv cuam tshuam cuam tshuam los ntawm kev ua haujlwm tsis raug lossis tsis kam tiv thaiv thiab cov khoom siv tsis siv neeg, ua rau muaj kev poob loj ntxiv.
2) Qhov nce ntawm qhov zaus ntawm kev sib haum xeeb tam sim no ua rau pom tseeb ntawm daim tawv nqaij, uas ua rau muaj kev tiv thaiv ntawm cov xaim hluav taws xob thiab cov kab xaim, ua rau cov kab poob, ua rau cov cua sov, ua rau cov rwb thaiv tsev ntxov ntxov, ua rau lub neej luv, ua rau kev puas tsuaj, thiab nws yooj yim rau hauv av luv luv Circuit Court txhaum, tsim hluav taws kub txaus ntshai.
3) Induce power grid resonance, ua rau harmonic voltage thiab overcurrent, ua rau muaj xwm txheej loj, kev puas tsuaj rau capacitor thiab lwm yam khoom siv hluav taws xob.
4) Harmonics cuam tshuam rau kev ua haujlwm ib txwm muaj ntawm ntau yam khoom siv hluav taws xob.Nws ua rau kev poob ntxiv thiab overheating ntawm asynchronous motors thiab transformers, ua raws li cov neeg kho tshuab kev co, suab nrov thiab overvoltage, txo efficiency thiab siv, thiab shortening kev pab cuam lub neej.
5) Kev cuam tshuam nrog kev sib txuas lus nyob ib sab, cov khoom siv hluav taws xob lossis cov khoom siv tswj tsis siv neeg, lossis tseem ua rau nws tsis tuaj yeem ua haujlwm li qub.
4. Cov txheej txheem lim
Shaanxi Central Tsev Kho Mob yog lub teb chaws thib ob-chav tsev kho mob A nrog cov cuab yeej kho mob siab heev thiab ib puag ncig zoo hauv tsev kho mob.Peb cov kws tshaj lij thiab cov kws tshaj lij tau tso siab los ntawm lub tsev kho mob thaum ntxov los ntsuas lub zog hluav taws xob zoo ntawm cov hluav taws xob qis hluav taws xob hauv tsev kho mob.Tag nrho cov distortion tus nqi tam sim no nyob rau hauv lub tsev kho mob daim phiaj hluav taws xob yog 10%, feem ntau yog faib nyob rau hauv cov yam ntxwv harmonics ntawm 3rd, 5th thiab 7th kev txiav txim.Raws li cov txiaj ntsig kev xeem, peb lub tuam txhab tau teeb tsa lub peev xwm ntawm 400A cov khoom siv lim dej rau lub tsev kho mob, ntsia rau hauv lub tshuab hluav taws xob qis hluav taws xob sab nraud, kev siv cov kev kho mob hauv nruab nrab rau kev tswj hwm kev sib haum xeeb.
5 Active Lim (/690v-active-power-filter-khoom /)
5.1 Khoom Taw Qhia
Active Power filter (/ noker-3-phase-34-wire-active-power-filter-apf-ahf-for-dynamic-harmonics-compensation-product/) yog ib hom tshiab ntawm lub zog hluav taws xob siv hluav taws xob siv los tswj kev sib haum xeeb thiab compensate reactive zog, uas muaj peev xwm them rau harmonics thiab reactive zog hloov nyob rau hauv loj thiab zaus.
5.2 Txoj Cai Ua Haujlwm
Lub load tam sim no raug kuaj pom nyob rau lub sijhawm tiag tiag los ntawm CT sab nraud, thiab tus nqi sib haum xeeb yog xam los ntawm DSP sab hauv.Los ntawm PWM teeb liab raug xa mus rau IGBT, lub inverter tsim ib qho kev sib haum xeeb tam sim no sib npaug ntawm cov khoom sib haum xeeb thiab nyob rau hauv qhov kev taw qhia rau hauv daim phiaj hluav taws xob kom offset qhov sib haum xeeb thiab ua tiav lub hom phiaj ntawm kev ua kom huv hauv daim phiaj hluav taws xob.
6 .Kev saib xyuas thiab tshuaj xyuas cov ntaub ntawv tswj kev sib haum xeeb hauv tsev kho mob
APF txee
Cov ntaub ntawv ntawm APF(/harmonics-compensation-200400v-active-harmonic-filter-ahf-module-triple-phase-product/) harmonic them nyiaj hauv tsev kho mob tau saib xyuas los ntawm lub hwj chim zoo analyzer CA8336 ntawm Fabkis, thiab cov ntaub ntawv hluav taws xob zoo tau raug soj ntsuam raws li ob qho xwm txheej ntawm APF kev ua haujlwm (tom qab them nyiaj) thiab kaw (tsis muaj nyiaj them), thiab cov ntaub ntawv tau sau tseg thiab tshuaj xyuas.
6.1 Kev ntsuas thiab ntsuas ntawm APFs (/ 3-theem-3-wire-active-power-filter-400v-75a-apf-panel-product/) cov ntaub ntawv tawm tswv yim thiab tshem tawm
1: Tus nqi zoo ntawm kev khiav haujlwm tam sim no
2: THD ua ntej lub lim dej txuas nrog
3: THDi tom qab Active lim txuas nrog
4: THDi los ntawm 1st mus rau 5th ua ntej Active lim txuas
5: THDi los ntawm 1st mus rau 5th tom qab Active lim txuas nrog
6: THDi los ntawm 1st mus rau 7th ua ntej Active lim txuas nrog
7: THDi los ntawm 1st mus rau 7th tom qab Active lim txuas nrog
Qhov tshwm sim:
| APF | THDi (tag nrho) | TSI (5th) | TSI (7th) |
| Ua ntej APF txuas | 10% | 9% | 3.3% |
| Tom qab APF txuas | 3% | 3% | 0.5% |
Raws li pom hauv daim duab saum toj no, kev tswj hwm kev sib haum xeeb ntawm tsev kho mob los ntawm AHF (/ low-voltage-active-power-filter-reduce-the-harmonic-current-active-harmonic-filter-ahf-product/) tau ntsuas nrog Cov kws tshaj lij fais fab zoo analyzer CA8336 ntawm Fabkis.Kev sib piv ntawm cov ntaub ntawv ua ntej thiab tom qab APF raug kuaj raws.Tom qab siv peb APF rau kev tswj hwm kev sib raug zoo, tag nrho cov kev cuam tshuam tam sim no (THDi) ntawm lub tsev kho mob lub zog hluav taws xob tau txo qis los ntawm 10% mus rau 3%, thiab cov txiaj ntsig tseem ceeb dua.
7. Cov ntsiab lus
Lub tsev kho mob cov khoom siv hluav taws xob yog qhov tseem ceeb.Kev taw qhia txog cov khoom siv hluav taws xob tshiab tau txhim kho kev kho mob zoo thiab zoo hauv tsev kho mob, thiab kuj tau muab kev kho mob zoo rau feem coob ntawm cov neeg mob.Tab sis lub zog tshiab thauj khoom kuj ua rau muaj kev sib haum xeeb.Lub hav zoov ntawm harmonics ua phem rau kev ua haujlwm ntawm lub tsev kho mob lub zog hluav taws xob thiab cuam tshuam rau kev ruaj ntseg ntawm cov cuab yeej kho mob.Raws li ib feem ntawm pej xeem cov phiaj xwm hluav taws xob, kev sib haum xeeb nce kev siv hluav taws xob hauv tsev kho mob, uas yog qhov tsis sib xws rau lub teb chaws cov lus hais txog kev txhawb nqa kev txuag hluav taws xob.
Tom qab peb lub tshuab lim dej tau muab tso rau hauv kev ua haujlwm, nws zoo heev txhim kho qhov zoo ntawm lub tsev kho mob daim phiaj hluav taws xob, tshem tawm kev nyab xeeb kev nyab xeeb, txhim kho kev nyab xeeb thiab huv lub zog hluav taws xob rau cov khoom siv kho mob, thiab tib lub sij hawm siv rau hauv kev txuag hluav taws xob thiab kev txo qis.
Post lub sij hawm: Oct-16-2023