Kev suav cov hluav taws xob siv los ntawm tsev neeg lossis cov cuab yeej siv hluav taws xob feem ntau yog ua los ntawm kev suav tag nrho lub zog ntawm cov hluav taws xob tam sim no dhau los ntawm kev ntsuas hluav taws xob. Nyob rau tib lub sijhawm, ob qhov ntsuas tau pom qhov txawv uas cuam tshuam txog tus nqi ntawm lub zog tag nrho thaum muab kev pabcuam rau cov neeg siv khoom. Cov ntsuas no hu ua active thiab reactive zog. Lub zog tag nrho yog qhov sib npaug ntawm ob daim duab no. Hais txog dab tsi ua haujlwm thiab hluav taws xob reactive yog dab tsi thiab yuav txheeb xyuas tus nqi ntawm cov nyiaj tau los, peb yuav sim qhia hauv kab lus no.
muaj zog
Raws li kev coj ua, cov neeg siv khoom tsis them nyiaj rau lub peev xwm muaj txiaj ntsig, uas yog siv ncaj qha rau hauv kev lag luam, tab sis rau tag nrho ib qho, uas yog tso tawm los ntawm cov chaw muag khoom lag luam. Cov ntsuas no yog qhov txawv ntawm cov ntsuas ntsuas - tag nrho lub zog ntsuas hauv volt-amperes (VA), thiab lub zog muaj txiaj ntsig yog ntsuas hauv kilowatts. Cov hluav taws xob muaj zog thiab rov ua haujlwm yog siv los ntawm txhua yam khoom siv hluav taws xob siv hluav taws xob.
hluav taws xob
Cov khoom nquag ntawm lub zog tag nrho ua haujlwm tau zoo thiab hloov mus rau cov hom zog uas cov neeg siv khoom xav tau. Rau qee cov khoom siv hluav taws xob hauv tsev thiab kev lag luam, lub zog nquag thiab pom tseeb hauv kev suav yog tib yam. Ntawm cov khoom siv zoo li no yog lub qhov cub hluav taws xob, lub teeb hluav taws xob, lub tshuab hluav taws xob, lub tshuab hluav taws xob, lub tshuab hluav taws xob, lub tshuab hluav taws xob thiab lub tshuab hluav taws xob, thiab lwm yam.
Yog tias lub zog nquag ntawm 1 kW tau qhia hauv phau ntawv hla tebchaws, ces tag nrho lub zog ntawm cov cuab yeej no yuav yog 1 kVA.
Lub tswvyim ntawm hluav taws xob reactive
Hom hluav taws xob no muaj nyob hauv cov kab hluav taws xob uas suav nrog cov khoom siv hluav taws xob. Reactive hluav taws xob yog ib feem ntawm tag nrho cov hluav taws xob tawm tswv yim uas tsis siv rau kev ua haujlwm muaj txiaj ntsig.
Hauv DC circuits, lub tswv yim ntawm lub zog reactive tsis tuaj. Hauv AC circuits, cov khoom siv reactive tshwm sim tsuas yog thaum muaj inductive lossis capacitive load. Hauv qhov no, muaj qhov tsis sib haum xeeb ntawm theem ntawm tam sim no thiab theem ntawm qhov voltage. Qhov kev hloov pauv theem ntawm qhov hluav taws xob thiab qhov tam sim no yog qhia los ntawm lub cim "φ".
Nrog rau qhov inductive load nyob rau hauv Circuit Court, ib theem lag yog pom, nrog ib tug capacitive load, nws yog ua ntej ntawm nws. Yog li ntawd, tsuas yog ib feem ntawm lub zog tag nrho tuaj rau cov neeg siv khoom, thiab qhov kev poob loj tshwm sim vim tsis muaj cua sov ntawm cov khoom siv thiab cov khoom siv thaum lub sijhawm ua haujlwm.
Fais fab poob tshwm sim vim muaj cov coils inductive hauv cov khoom siv hluav taws xob thiabcapacitors. Vim yog lawv, hluav taws xob accumulates hauv Circuit Court rau qee lub sijhawm. Lub zog khaws cia yog tom qab ntawd rov qab mus rau hauv Circuit Court. Cov cuab yeej siv hluav taws xob uas siv hluav taws xob suav nrog cov khoom siv hluav taws xob muaj xws li cov cuab yeej siv hluav taws xob, hluav taws xob thiab ntau yam khoom siv hauv tsev. Tus nqi no yog suav nrog rau hauv tus account lub zog tshwj xeeb, uas yog suav tias yog cos φ.
Xaiv hluav taws xob reactive
Power factor ranges ntawm 0.5 txog 0.9; tus nqi tseeb ntawm qhov ntsuas no tuaj yeem pom hauv daim ntawv hla tebchaws ntawm cov khoom siv hluav taws xob. Lub zog pom meej yuav tsum raug txhais raws li qhov sib xyaw ntawm lub zog nquag muab faib los ntawm ib qho.
Piv txwv li, yog tias lub zog ntawm qhov xyaum hluav taws xob yog 600 W thiab tus nqi yog 0.6, ces tag nrho lub zog siv los ntawm lub cuab yeej yuav yog 600/06, uas yog, 1000 VA. Thaum tsis muaj ntawv hla tebchaws rau kev suav tag nrho lub zog ntawm lub cuab yeej, tus coefficient tuaj yeem muab sib npaug rau 0.7.
Vim tias ib qho ntawm cov haujlwm tseem ceeb ntawm cov khoom siv hluav taws xob uas twb muaj lawm yog xa cov hluav taws xob muaj txiaj ntsig rau cov neeg siv khoom kawg, cov hluav taws xob tsis zoo yog suav tias yog qhov tsis zoo, thiab qhov nce ntawm qhov ntsuas no ua rau tsis ntseeg txog kev ua haujlwm ntawm cov hluav taws xob hluav taws xob. tag nrho. Qhov sib npaug ntawm lub zog nquag thiab rov ua haujlwm hauv lub voj voog tuaj yeem pom hauv daim duab ntawm daim duab funny no:
Tus nqi ntawm cov coefficient thaum suav nrog kev poob
Qhov siab duatus nqi ntawm cov khoom siv fais fab, qhov tsawg dua yuav poob ntawm cov hluav taws xob nquag - uas txhais tau hais tias cov neeg siv khoom kawg ntawm cov khoom siv hluav taws xob yuav raug nqi tsawg dua. Txhawm rau nce tus nqi ntawm cov coefficient no, ntau txoj hauv kev ntawm kev them nyiaj rau cov hluav taws xob tsis zoo yog siv hauv hluav taws xob engineering. Compensating li yog ua cov generators tam sim no uas du tawm lub kaum sab xis ntawm tam sim no thiab voltage. Lub tsev txhab nyiaj Capacitor qee zaum siv rau tib lub hom phiaj. Lawv txuas nrog rau qhov sib npaug mus rau kev ua haujlwm hauv Circuit Court thiab siv los ua cov nyiaj them poob haujlwm synchronous.
Xaiv tus nqi hluav taws xob rau cov neeg siv khoom ntiag tug
Rau tus kheej siv, hluav taws xob nquag thiab hluav taws xob tsis sib cais hauv cov nqi - hais txog kev noj, feem ntawm lub zog reactive yog me me. Yog li ntawd, cov neeg siv khoom ntiag tug nrog kev siv hluav taws xob txog li 63 A them ib daim nqi, uas txhua tus siv hluav taws xob tau suav tias yog siv. Kev poob ntxiv hauv Circuit Court rau hluav taws xob reactive tsis cais cais thiab tsis them.
Reactive hluav taws xob ntsuas rau kev lag luam
Lwm yam yog kev lag luam thiab cov koom haum. Ib tug loj tus naj npawb ntawm cov khoom siv hluav taws xob tau nruab rau hauv cov chaw tsim khoom thiab cov chaw ua haujlwm, thiab nyob rau hauv tag nrho cov khoom siv hluav taws xob muaj ib feem tseem ceeb ntawm lub zog reactive, uas yog tsim nyog rau kev ua haujlwm ntawm cov khoom siv hluav taws xob thiab hluav taws xob. Active thiab reactive hluav taws xob muab rau cov lag luam thiab cov koom haum xav tau kev sib cais meej thiab ib txoj kev sib txawvkev them nyiaj rau nws. Hauv qhov no, daim ntawv cog lus tus qauv ua lub hauv paus rau kev tswj hwm kev sib raug zoo ntawm cov neeg siv hluav taws xob thiab cov neeg siv khoom kawg. Raws li cov kev cai tsim nyob rau hauv daim ntawv no, cov koom haum uas siv hluav taws xob siab tshaj 63 A xav tau ib tug tshwj xeeb ntaus ntawv uas muab reactive zog nyeem ntawv rau metering thiab them nyiaj. Tus neeg teb xov tooj nruab ib lub reactive hluav taws xob ntsuas thiab nqi raws li nws nyeem.
Reactive Zog Factor
Raws li tau hais ua ntej, hluav taws xob nquag thiab rov ua haujlwm hauv cov ntawv xa nyiaj rau kev them nyiaj tau faib rau hauv cov kab sib cais. Yog tias qhov piv ntawm cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob tsis tau tshaj li cov qauv tsim, ces kev them nyiaj rau lub zog reactive tsis raug them. Qhov piv coefficient tuaj yeem raug sau rau hauv ntau txoj hauv kev, nws qhov nruab nrab tus nqi yog 0.15. Yog tias tus nqi pib no dhau lawm, cov neeg siv khoom lag luam raug pom zoo rau nruab cov khoom siv nyiaj.
Reactive zog hauv tsev tsev
Cov neeg siv hluav taws xob zoo yog lub tsev tsev nrog lub ntsiab fuse uas siv ntau tshaj 63A. Yog li, cov neeg nyob hauv ib lub tsev apartment pom nyob rau hauv cov nqi tsuas yog them rau tag nrho cov hluav taws xob muab rau lub tsev los ntawm tus neeg muag khoom. Tib txoj cai siv rau kev koom tes hauv vaj tsev.
Cov xwm txheej tshwj xeeb ntawm kev siv fais fab nyiaj txiag
Muaj cov xwm txheej thaum muaj cov koom haum lag luam thiab cov tsev nyob hauv ntau lub tsev. Kev muab hluav taws xob rau cov tsev zoo li no yog tswj hwm los ntawm Txoj Cai Sib Txawv. Piv txwv li, kev faib tuaj yeem yog qhov loj ntawm thaj chaw siv tau. Yog tias cov koom haum ua lag luam nyob tsawg dua ib nrab ntawm thaj chaw siv tau hauv ib lub tsev, ces kev them nyiaj rau lub zog reactive tsis raug them. Yog tias qhov feem pua tau dhau lawm, ces muaj cov luag num them rau hluav taws xob reactive.
Qee zaum, cov tsev nyob hauv tsev tsis raug zam los ntawm cov nqi hluav taws xob rov qab. Piv txwv li, yog hais tias lub tsev muaj elevator kev twb kev txuas cov ntsiab lus rau cov tsev, tus nqi rau kev siv ntawm reactive hluav taws xob tshwm sim nyias, tsuas yog rau cov khoom siv no. Cov tswv tsev tseem tseem them hluav taws xob nkaus xwb.
Kev nkag siab txog lub ntsiab lus ntawm lub zog nquag thiab rov ua haujlwm ua rau nws ua tau kom raug xam cov txiaj ntsig kev lag luam ntawm kev txhim kho ntau yam khoom siv them nyiaj uas txo qis los ntawm cov khoom siv rov ua haujlwm. Raws li kev txheeb cais, cov cuab yeej zoo li no tso cai rau koj nce tus nqi ntawm cos φ los ntawm 0.6 txog 0.97. Yog li, cov cuab yeej siv nyiaj tsis siv neeg pab txuag tau txog li ib feem peb ntawm cov hluav taws xob muab rau cov neeg siv khoom. Kev txo qis hauv kev kub ntxhov ua rau lub neej ntawm cov khoom siv thiab cov txheej txheem ntawm cov chaw tsim khoom thiab txo cov nqi ntawm cov khoom tiav.
