Ntawm technology, Electronics
Yuav ua li cas yog hluav taws xob hwj chim?
Muaj coob tus neeg, thaum lawv sib tham txog xws li ib tug tshaj plaws li lub hluav taws xob hwj chim txhais hais tias ib tug quab yuam. Txawm li cas los, txawm nyob rau hauv lub tsev kawm ntawv physics kawg tau muab txoj kev paub hais tias lub hwj chim thiab lub zog - qhov no yog lub tswvyim sib txawv ntawm cov, tab sis yog lwm yam kev.
Lub tswvyim ntawm "lub hwj chim" txhais tau tias tus yam ntxwv ntawm ib tug tshwm sim. Nws yog ua tau rau cov nyob qib qub hwj chim nrog ib co kwv. Tej lub cev txiav txim yuav tsum tau hu ua kev quab yuam. Zoo meej ua hauj lwm hu ua raws li dhau los ntawm ib tug quab yuam thov txoj kev. Ua hauj lwm ua los ntawm kev quab yuam rau tej lub sij hawm, yuav ua ncaj rau lub hwj chim. Yog li, lub hwj chim - nws yog ib lub cev muaj nuj nqis, sib npaug zos rau cov piv ntawm cov chaw ua hauj lwm, ua li cas rau ib tug tej lub sij hawm muaj tej yam quab yuam, qhov no lub sij hawm ntawm lub sij hawm.
Txawm li cas los, peb yuav tsum tsis txhob hnov qab lub hwj chim tseem hu ua lub ntsuas zog ntsuas. Yog li ntawd nws yog tau coj mus rau hauv tus account lub ntsiab lus tias qhov no lub sij hawm yuav tsum tau hu ua thiab cov kev hloov ntawm lub zog nyob rau hauv ib tug tej yam system (zog hloov dua siab tshiab npaum li cas).
Txawm hais tias cov ntsiab lus uas thiab txhais cov ntsiab saum toj no txog kev mus rau ntau dua cov neeg kho tshuab zog, qhov no tag nrho cov muaj peev xwm neeg xws li ib tug lub tswv yim raws li "hluav taws xob hwj huam". Cov khoom ntawm tam sim no thiab voltage yog hu ua tus tam sim no muaj peev xwm. Txij li thaum cov tswvyim no yog nyob sib npaug rau cov voltage thiab tam sim no, nws yuav tau hais tias tib fais fais fab yog tau raws li thaum ib tug loj tam sim no thiab ib tug tsis tshua muaj voltage thiab nyob siab voltages thiab tsawg currents. Qhov no tej khoom vaj tse yog lub hauv paus ntawm lub hwj chim kis tau tus mob tshaj ntev ncua kev los ntawm fais fab nroj tsuag, substations, transformers (raising thiab tej), Switchgear thiab lwm yam hluav taws xob khoom.
Hluav taws xob cov hwj chim yog muab faib ua ob lub ntsiab hom: reactive thiab proactive. Active hwj chim - ib tug yam ntxwv ntawm hluav taws xob transformation mus rau hauv lwm cov ntaub ntawv ntawm lub zog (thaum tshav kub kub, tsab ntawv tsa suab, lub teeb). Hluav taws xob cov hwj chim yog ntsuas nyob rau hauv watts (W). Nyob rau hauv lub neej txhua hnub, qhov no lub zog yog feem ntau ntsuas nyob rau hauv kilowatts, thiab yog siv nyob rau hauv loj fais fab nroj tsuag thiab loj units - Megawatts.
Reactive fais fais fab characterizes qhov hluav taws xob load rau hauv ntau yam pab kiag li lawm. Nws yog sib npaug zos rau cov khoom ntawm voltage nco thoob plaws lub operating tam sim no thiab cov sine ntawm lub theem ua haujlwm lub (theem sib txawv) ntawm qhov tam sim no thiab voltage nco. Reactive hwj chim yog ntsuas nyob rau hauv volt-amperes reactive (var).
Active hwj chim muaj peev xwm yuav txuam nrog ib tug hluav taws xob hwj chim los ntawm xws li ib tug lub tswv yim raws li "hwj chim tshaj" - qhov txawv ntawm qhov tam sim no theem thiab voltage. Rau feem ntau tsev neeg cov khoom siv rau lub cosine yuav ua ncaj rau txog 0.8. Rau cua sov li nws yog feem ntau yeej tsa mus rau kev sib sau.
Ntsuas hluav taws xob hwj chim los ntawm ib tug tshwj xeeb ntaus ntawv - hwj chim 'meter'. Xws li ib tug ntaus ntawv muaj ob tug windings. Tus thawj yog ib tug tuab hlau yog kev cob cog rua nrog tau txais kev pab ntawm hluav taws xob lub hwj chim, thiab no qhov kev hloov nyob rau hauv tam sim no qhov ntau. Qhov thib ob winding muaj ib tug nyias hlau thiab kev cob cog rua nyob rau hauv thaum uas tig mus kom haum raws li voltage. Fais fab nroj tsuag feem ntau siv xws li ib tug tshaj plaws li "ntsia fais lub hwj chim," uas yog lub sum ntawm cov nyob daim ntawv Tuition Waiver ntawm tag nrho cov hluav taws xob cav ntawm tsuas yog ib hom los yog hom (piv txwv li, transformers, generators, motors).
Similar articles
Trending Now