Raws li kev paub dhau los ntawm lub zog ua haujlwm zoo, thaum peb xaivactive harmonic lim, ob lub qauv yog feem ntau siv los kwv yees lub peev xwm ntawm kev sib haum xeeb.
1.Centralized governance: kwv yees lub peev xwm configuration ntawm harmonic tswj raws li kev lag luam kev faib thiab transformer muaj peev xwm.
S---- Transformer rated muaj peev xwm, U---- Rated voltage ntawm ob sab ntawm U-transformer
Ih ---- Harmonic tam sim no, THDi ---- Tag nrho tam sim no distortion tus nqi, nrog ntau qhov txiaj ntsig txiav txim siab raws li qhov sib txawv ntawm kev lag luam lossis kev thauj khoom
K---- Transformer load tus nqi
| Hom kev lag luam | Hom harmonic distortion tus nqi% |
| Subway, Tunnels, High-speed tsheb ciav hlau, tshav dav hlau | 15% |
| Kev sib txuas lus, kev lag luam vaj tse, Lub txhab nyiaj | 20% |
| Kev kho mob kev lag luam | 25% |
| Automobile manufacturing, nkoj tsim khoom | 30% |
| Chemical\ Petroleum | 35% |
| Kev lag luam metallurgical | 40% |
2.On site kev tswj hwm: kwv yees lub peev xwm ntawm kev tswj hwm kev sib haum xeeb raws li cov kev pabcuam thauj khoom sib txawv.
Ih---- Harmonic tam sim no, THDi---- Tag nrho tam sim no distortion tus nqi, nrog ntau yam ntawm qhov tseem ceeb txiav txim siab raws li qhov sib txawv ntawm kev lag luam lossis kev thauj khoom
K --- Transformer load tus nqi
| Load hom | Hom harmonic cov ntsiab lus% | Load hom | Hom harmonic cov ntsiab lus% |
| Inverter | 30---50 | Nruab nrab zaus induction cua sov fais fab mov | 30---35 ib |
| of the elevator | 15---30 ib | Rau pulse rectifier | 28--38 : kuv |
| LED teeb | 15---20 | Kaum ob mem tes rectifier | 10---12 |
| Lub teeb txuag hluav taws xob | 15---30 ib | Electric vuam tshuab | 25--58 : kuv |
| Hluav taws xob ballast | 15---18 | Kev hloov pauv zaus cua txias | 6 ----34 |
| Hloov hom fais fab mov | 20---30 ib | UPS | 10---25 |
Nco tseg: Cov kev suav saum toj no tsuas yog cov qauv kev kwv yees rau kev siv.
Thaum peb xaivstatic var generator, ob cov qauv feem ntau yog siv los kwv yees lub peev xwm ntawm cov khoom siv hluav taws xob reactive.
1.Kev kwv yees raws li qhov muaj peev xwm ntawm transformer:
20% mus rau 40% ntawm lub peev xwm transformer yog siv los teeb tsa reactive zog them peev xwm, nrog rau kev xaiv dav dav ntawm 30%.
Q = 30% * S
Q ---- Reactive zog them peev xwm, S ---- Transformer muaj peev xwm
Piv txwv li, 1000kVA transformer yog nruab nrog 300kvar reactive zog them.
2.Xaiv raws li qhov ua tau zoo thiab lub zog ua haujlwm ntawm cov khoom siv:
Yog tias muaj cov ncauj lus ntxaws ntxaws, xws li lub zog siab tshaj plaws P, lub zog ua haujlwm COSO ua ntej them nyiaj, thiab lub hom phiaj lub zog COSO tom qab them nyiaj, qhov peev xwm them nyiaj tiag tiag rau lub cev tuaj yeem suav ncaj qha:
Q ---- Reactive zog them peev xwm, P ---- Lub zog siab tshaj plaws
K---- nruab nrab load coefficient (feem ntau yog 0.7--0.8)
Nco tseg: Cov kev suav sau saum toj no tsuas yog siv rau kev siv xwb.
Noker Electric tau cog lus los muab cov neeg siv khoom nrog kev them nyiaj rov qab ua haujlwm hluav taws xob thiab kev tswj hwm kev sib haum xeeb, txhua yam lus nug hauv kev xaiv cov khoom, koj xav tiv tauj peb.
Post lub sij hawm: Dec-08-2023