Cov ua kom muaj peb {{-} theem tam sim no sib txawv hauv qhov qis- voltage parallel kev them nqi vaj tse
Aug 26, 2025| In the daily use of low-voltage parallel-connected compensation capacitors, some enterprise users have found that there is a problem of three-phase current deviation in the capacitors. Qhov no tsis yog cuam tshuam rau cov nyiaj tau los ntawm lub capacitors, tab sis kuj yuav ua rau muaj kev hem thawj rau kev nyab xeeb thiab kev ruaj khov ntawm cov khoom siv hluav taws xob. Yog li, dab tsi ua rau peb -}}}}}}}}}} {} theem tam sim no sib txawv ntawm qis {6} voltage capacitors?
1. Qhov cuam tshuam ntawm Grid Voltage tsis txaus
Qhov tsis txaus ntawm daim phiaj voltage yog qhov tseem ceeb ntawm kev sib txawv ntawm peb -} theem ua rau muaj peev xwm. Thaum muaj qhov sib txawv lossis theem sib txawv ntawm peb-}}}}} prease fais fab khoom voltuage, yog li ua rau tsis muaj kev faib tawm tam sim no. This voltage imbalance may be caused by the asymmetric operation of the distribution transformer, the concentrated connection of single-phase loads, or the differences in line impedance.
2. Inconsistencies nyob rau hauv cov tsis ntawm lub capacitors lawv tus kheej
Qhov sib txawv ntawm cov koog hauv sab hauv lossis ib qho khoom siv ntawm lub tuam txhab hluav taws xob tseem yog qhov tseem ceeb ntawm peb {{}} theem degrents. Thaum lub sij hawm tsim kev tsim khoom, vim muaj kev sib txawv me me hauv cov ntaub ntawv, cov txheej txheem, lossis sib dhos, cov kev ua tau zoo sib xws, lossis cov kev ua haujlwm rwb thaiv tsev yuav hloov pauv. Qhov kev ntsuas tsis sib xws no yuav tshwm sim ua cov kev ua kom sib txawv ntawm txhua lub paimitor lub sijhawm thaum ua haujlwm, yog li ua rau tsis sib xws peb {}} theem degrents.
3. Qhov cuam tshuam rau cov nyhuv ntawm Harmonic diav
Cov thoob plaws hauv harteronic Cheebtsam hauv cov tshuab hluav taws xob muaj qhov cuam tshuam tseem ceeb rau kev faib tawm tam sim no ntawm capacitors. Harmonic diav tsim los ntawm tsis- linear loads tej zaum yuav muaj ntau yam hloov pauv ntawm cov kab ke sib xyaw ua ke ntawm cov khoom siv capacitors. Ntxiv mus, kev sib raug zoo sib cuam tshuam nrog cov yam ntxwv muaj peev xwm ntawm capacitors, uas yog ua kom muaj kev cuam tshuam dab tsi tam sim no.
4. Kev cuam tshuam ntawm txoj kev sib txuas thiab sab nraud hluav taws xob
Txoj kev sib txuas ntawm lub capacitor (xws li lub hnub qub lossis delta txuas) thiab cov qauv tsim ntawm sab nraud ntawm cov hluav taws xob kuj tseem yuav ua rau peb {{0} {}} theem tam sim no sib txawv tam sim no. Piv txwv li, kev sib cuag tsis zoo ntawm kev sib txuas lus tsis zoo, nws yuav hloov cov ntu sib xyaw ua ke, yog li cuam tshuam rau kev faib tawm tam sim no.
5. Hloov pauv hauv ib puag ncig thiab kev ua haujlwm
Kev hloov pauv hauv ib puag ncig ua haujlwm, xws li qhov kub thiab huab cua kev sib cav, tej zaum yuav yog kev sib txawv ntawm cov capaceters los yog kev ntseeg tau ntawm kev sib txuas. Qhov nce ntxiv nyob rau hauv kub yuav hloov cov yam ntxwv dielectric ntawm lub capacitor, uas ua rau tsis muaj kev teb tsis nyob hauv theem; Neeg kho tshuab kev co yuav ua rau txoj kev sib txuas los yog kev hloov pauv hauv cov qauv sab hauv.