generator THD: txhua yam koj xav paub
- Los ntawm BISON
Table of Contents
Lub ntshiab sine yoj yog ib lub tswv yim theoretical uas tsuas yog tsim los ntawm ib qho zoo tagnrho alternator nrog zoo kawg nkaus faib stator windings, uas ua rau ib tug zoo kawg nkaus sib nqus teb. Hauv kev xyaum, ob qho xwm txheej tsis ua tiav, thiab cov zis waveform ntawm ib qho kev khiav hauj lwm alternator yuav deviate los ntawm lub zoo meej waveform.
Lub zog zoo ntawm txhua yam ntawm lub tshuab hluav taws xob thiab lub zog thauj khoom nws tuaj yeem muab tau raug ntsuas los ntawm tus nqi THD. Harmonics uas dhau qhov kev txwv yuav ua rau muaj ntau yam teeb meem, nrog rau cov khoom siv overheating, vibration, suab nrov, cov khoom siv hluav taws xob puas lossis tsis ua haujlwm, tswj Circuit Court thiab kev sib txuas lus cuam tshuam, txo qhov kev ua haujlwm, thiab txawm tias hluav taws.
Hauv cov lus hauv qab no, koj tuaj yeem kawm tag nrho harmonic distortion (THD) yog dab tsi thiab vim li cas thiaj tseem ceeb, as well as kawm ntxiv txog cov cuam tshuam ntawm harmonic distortion thiab lwm yam ntsiab lus.
Lub tshuab hluav taws xob THD puas tseem ceeb?
Lub hauv paus impedance ntawm txhua lub tshuab hluav taws xob hloov pauv nrog lub sijhawm tom qab hloov pauv kom txog thaum lub kaw lus ruaj khov dua. Rau ib qho kev hloov pauv ntawm qhov tam sim no tus nqi tam sim no, lub tshuab hluav taws xob yuav tsim qhov qis tshaj tag nrho kev sib haum xeeb distortion, lossis THD, nrog qhov qis tshaj sab hauv reactance.
Koj yuav nkag siab qhov no nrog cov logic hauv qab no. Thaum koj mam li hloov pauv qhov sib piv loj ntawm lub tshuab hluav taws xob me me, qhov zaus thiab qhov hluav taws xob hloov pauv mus txog rau thaum AVR thiab zaus tus tswv xeev hloov kho qhov hloov pauv.
Qhov no yog vim li cas nonlinear loads ua haujlwm zoo ntawm kev siv hluav taws xob thiab tsim kom muaj kev sib haum xeeb tag nrho ntawm cov tshuab hluav taws xob.
Cov teebmeem tsis zoo rau lub tshuab hluav taws xob portable
a) ERAtic AVR ua haujlwm
Ib qho hluav taws xob tsis siv neeg tswj hluav taws xob (AVR) tuaj yeem paub qhov tsis raug ntawm qhov hluav taws xob ntawm stator terminals yog tias tus nqi ntawm THD-V siab thiab yuav tswj lub tshuab hluav taws xob mus rau qhov tsis ncaj ncees lawm.
b) Erratic ceev hloov pauv
Tus tswv xeev AC zaus tuaj yeem ua haujlwm tau yooj yim vim qhov kev sib haum xeeb siab tag nrho. Cov tswv xeev no tau txais cov lus qhia ceev ceev los ntawm kev ntsuas qhov zaus ntawm qhov tso zis hluav taws xob hauv chav AVR. Kev cuam tshuam tag nrho ntawm kev sib haum xeeb ntau dhau tuaj yeem ua rau muaj teeb meem hauv cov xwm txheej uas cuam tshuam nrog ntau yam xoom hla hauv ib lub voj voog, ua rau kev ntsuas tsis raug thiab tsis ruaj khov ntawm kev tswj hwm ceev.
Lwm yam teebmeem ntawm harmonics
Ntau hom loads muaj lwm yam kev puas tsuaj ntawm harmonics. Koj tuaj yeem kawm paub meej txog cov teebmeem no hauv ntu tom ntej.
c) Cov teebmeem tam sim ntawd
Harmonic voltages tuaj yeem cuam tshuam rau cov khoom siv hluav taws xob, ua rau muaj kev vibration thiab suab nrov, thiab ua rau muaj kev cuam tshuam hauv kev sib txuas lus thiab tswj circuits.
d) Cov teebmeem ntev
Cov teebmeem ntev yog tshwm sim los ntawm cov neeg kho tshuab qaug zog los ntawm kev vibration thiab kub. Lawv suav nrog capacitor cua sov uas tshwm sim los ntawm conduction thiab dielectric hysteresis poob. High THD tuaj yeem ua rau dielectric tawg thiab cua sov.
Yuav ua li cas txo lub tshuab hluav taws xob THD?
Nws yog ib qho tseem ceeb kom nco ntsoov tias txhua lub tshuab hluav taws xob tsim ib co THD. Txawm li cas los xij, qee lub tshuab hluav taws xob tsim THD ntau dua li lwm tus. Nws yog ib qho tseem ceeb uas yuav tau xaiv lub tshuab hluav taws xob uas muaj qhov ntsuas qis THD, tshwj xeeb tshaj yog tias koj siv cov khoom siv hluav taws xob muaj zog. Muaj ntau txoj hauv kev los txo cov tshuab hluav taws xob THD, suav nrog:
Xaiv lub tshuab hluav taws xob uas muaj qhov ntsuas qis THD.
Inverter generators siv cov khoom siv hluav taws xob zoo tshaj plaws los tsim cov khoom siv hluav taws xob huv, ruaj khov nrog THD tsawg. Lawv tsim AC lub zog, hloov mus rau DC, thiab tom qab ntawd hloov nws rov qab rau AC nrog qhov tseeb voltage thiab zaus tswj. Cov thev naus laus zis no tshem tawm feem ntau qhov sib txawv ntawm qhov sib txawv, ua rau lawv zoo tagnrho rau cov khoom siv hluav taws xob.
Inverter generators suav nrog cov kev tswj hwm qhov hluav taws xob, tsis siv neeg thauj khoom, thiab cov tshuab lim siab siab kom ntseeg tau tias cov zis THD tsawg. Cov yam ntxwv no ua rau muaj lub zog zoo thiab kev tiv thaiv ntawm cov khoom siv txuas nrog.
Tsis siv neeg voltage regulators (AVR)
AVR tshuab tswj cov zis hluav taws xob ntawm lub tshuab hluav taws xob kom tswj tau qhov ntsuas hluav taws xob ruaj khov. Los ntawm kev txo qhov kev hloov pauv ntawm qhov hluav taws xob thiab qhov cuam tshuam, AVR pab txo THD qib hauv cov zis hluav taws xob. Nws ua kom lub zog tas mus li thiab huv si rau cov khoom siv rhiab heev.
AVR thev naus laus zis tuaj yeem muab tso rau hauv ntau lub tshuab hluav taws xob, xws li lub tshuab hluav taws xob portable thiab standby units, muab lub zog THD tsawg. Nws muab cov kev daws teeb meem zoo rau kev txhim kho lub zog zoo yam tsis tas yuav muaj kev hloov pauv ntau rau lub tshuab hluav taws xob.
THD cov ntxaij lim dej
Ib txhia diesel generators siv cov ntxaij lim dej tshwj xeeb kom txo qis kev sib txawv ntawm cov khoom siv hluav taws xob. Cov ntxaij lim dej no tshem tawm cov tsis xav tau kev sib haum xeeb, ua rau muaj kev nqus dej huv nrog THD qib qis.
Cov tshuab hluav taws xob diesel nrog THD cov ntxaij lim dej feem ntau yog siv rau hauv cov ntawv thov nrog lub zog muaj peev xwm thiab nruj THD cov cai. Lawv muab lub zog ruaj khov thiab txhim khu kev qha rau kev lag luam, kev lag luam, thiab kev siv vaj tse tseem ceeb.
Derate lub generator
Xaiv lub tshuab hluav taws xob THD qis nrog cov zis hluav taws xob txaus kom tau raws li koj xav tau. Oversizing los yog undersizing lub tshuab hluav taws xob yuav cuam tshuam rau nws cov kev ua tau zoo thiab qhov zoo ntawm cov khoom siv hluav taws xob. Kwv yees tag nrho cov kev xav tau ntawm lub zog ntawm cov cuab yeej koj npaj yuav txuas rau lub tshuab hluav taws xob. Xav txog ob qho tib si txuas ntxiv thiab ncov lub zog xav tau los xyuas kom meej tias lub tshuab hluav taws xob tuaj yeem tswj cov khoom thauj tsis cuam tshuam rau lub zog zoo.
Kev nyab xeeb nta thiab kev tiv thaiv mechanisms
- Kev tiv thaiv kev tiv thaiv: Xyuas kom lub tshuab hluav taws xob muaj kev tiv thaiv kev tiv thaiv overloading, uas tuaj yeem ua rau muaj hluav taws xob poob thiab nce THD qib. Nta xws li Circuit Court breakers thiab overload detection mechanisms tiv thaiv lub tshuab hluav taws xob thiab cov khoom siv txuas nrog.
- Voltage tswj thiab surge tiv thaiv: Saib rau cov tshuab hluav taws xob uas muaj peev xwm tswj tau qhov muaj peev xwm tswj tau cov zis hluav taws xob ruaj khov. Cov yam ntxwv tiv thaiv hluav taws xob tuaj yeem tiv thaiv cov khoom siv hluav taws xob tsis zoo los ntawm qhov hluav taws xob hluav taws xob thiab kev hloov pauv.
xaus
Lub tshuab hluav taws xob THD yog qhov tseem ceeb thaum xaiv thiab khiav lub tshuab hluav taws xob. Tsawg THD generators yog qhov tseem ceeb rau kev muab lub zog huv thiab ruaj khov.
Puas yog koj tab tom nrhiav lub chaw tsim khoom tsim hluav taws xob txhim khu kev qha uas tseem ceeb tshaj plaws thiab kev ua haujlwm zoo? Saib tsis ntxiv! BISON, ib tug ua generator chaw tsim tshuaj paus nyob rau hauv Suav teb, nyob ntawm no kom tau raws li koj xav tau.
BISON generators tau tsim tshwj xeeb los muab cov kev sib txuam tsis sib haum xeeb (THD), kom ntseeg tau tias lub zog hluav taws xob huv. Nrog THD kev ntsuam xyuas zoo nyob rau hauv cov qauv kev lag luam, peb lub tshuab hluav taws xob tau lees tias muaj kev nyab xeeb, muaj zog thiab ruaj khov, txo qhov kev pheej hmoo ntawm kev puas tsuaj rau koj cov khoom siv hluav taws xob.
Los ntawm kev koom tes nrog peb, koj yuav koom nrog lub network ntawm kev lag luam uas tau tsav los ntawm kev tsim kho tshiab thiab kev ua tau zoo. Tiv tauj peb hnub no kom paub ntau ntxiv txog peb qhov kev pab cuam muag khoom.
FAQs txog kev ua kom koj lub tshuab hluav taws xob nyob ntsiag to
THD ntau npaum li cas?
Tej zaum koj yuav xav tias "THD yog dab tsi?". Cov kev txwv dav dav ntawm tag nrho cov kev sib haum xeeb tsis sib haum xeeb rau ntau hom khoom siv yog:
- Cables: Core shielding voltage distortion = 10%
- rhiab electronics: Voltage distortion = 5%; Txawm li cas los xij, qhov feem pua ntawm cov neeg sib haum xeeb yuav tsum raug txwv rau 3%.
- Asynchronous tshuab: Stator tam sim no distortion = 1.5 txog 3.5%
- Synchronous tshuab: Stator tam sim no distortion = 1.3 txog 1.4%.
- Capacitors: Tam sim no distortion = 83% nrog ib qho overload ntawm 30%. Overvoltages yuav nce mus txog 10%.
Dab tsi yog qhov tseem ceeb ntawm THD cov tshuab hluav taws xob qis?
- Kev tiv thaiv cov cuab yeej rhiab heev: Tsawg THD generators tiv thaiv cov khoom siv hluav taws xob zoo los ntawm kev txo cov kev hloov pauv hluav taws xob thiab kev cuam tshuam ntawm waveform distortion. Tsawg THD cov tshuab hluav taws xob yog qhov tseem ceeb rau kev siv hluav taws xob zoo xws li khoos phis tawj, khoom siv kho mob, thiab lub suab / yees duab. Cov cuab yeej no muaj kev cuam tshuam rau kev sib haum xeeb, thiab THD lub tshuab hluav taws xob qis kom ntseeg tau tias lawv muaj kev nyab xeeb thiab tsis muaj kev cuam tshuam.
- Kev zam cov ntaub ntawv kev noj nyiaj txiag thiab kev ua haujlwm tsis zoo: THD qib siab tuaj yeem ua rau cov ntaub ntawv kev noj nyiaj txiag, kev ua haujlwm tsis zoo, thiab txawm tias lub cev poob rau hauv cov khoom siv hluav taws xob rhiab heev.
Txo qis zog poob: Harmonic distortions hauv lub hwj chim mov tuaj yeem ua rau muaj kev poob ntau ntxiv hauv cov khoom siv hluav taws xob thiab cov tshuab xa khoom. - IEEE 519 thiab THD txwv: Lub koom haum ntawm hluav taws xob thiab hluav taws xob engineers (IEEE) tus qauv 519 teeb tsa cov kev txwv ntawm THD qib kom ntseeg tau tias lub zog muaj zog thiab tiv thaiv kev cuam tshuam nrog kev siv hluav taws xob.
- Environmental Protection Agency (EPA) cov kev cai: Qee cov ntawv thov, xws li thaj chaw rhiab heev, yuav tsum ua raws li EPA cov cai rau kev sib haum xeeb.
Cov Lus Nrov Tshaj Plaws
NUG LUS NUG?
Hu rau peb hnub no.
yuav?
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