Lub zog zoo ntsuas

Cov ntsuas hluav taws xob zoo yog cov lus piav qhia ntawm ntau yam ntawm lub zog zoo, thiab cov ntsuas sib txawv muaj cov ntsiab lus sib txawv. Kev xa mus rau International Electrotechnical Commission tus qauv, cov xwm txheej tseem ceeb uas ua rau muaj kev cuam tshuam tau raug cais raws li hauv qab no los ntawm kev xav ntawm electromagnetic phenomena, kev cuam tshuam thiab cuam tshuam.
ib. Kev cuam tshuam hluav taws xob (tawm): Hauv ib lub sijhawm, ib lossis ntau theem tag nrho poob qhov hluav taws xob (tsawg dua {{0}}}.8 "unit value" yog hu ua outage. Raws li lub sijhawm, nws muab faib nyob rau hauv tam sim no fais fab tuag (0.5 voj voog ~ 3S), hluav taws xob ib ntus hluav taws xob (3S ~ 60S) thiab tsis tu ncua fais fab tuag (ntau tshaj 60S).
b. Frequency deviation (frequency deviation): Txhua lub teb chaws tau tsim cov kev cai meej rau qhov no.
c. Voltage sag (voltage drop, dip): Lub sij hawm yog {{{0}}}.5 voj voog ~ 1min, qhov amplitude yog 0.1 ~ 0.9 (unit tus nqi), thiab qhov system zaus tseem tus nqi nominal.
d. Voltage nce (voltage swell): Qhov voltage (los yog tam sim no) kav rau 0. 5 cycles ~ 1min, amplitude yog 1.1 ~ 1.8 (tus qauv tus nqi), qhov system zaus tseem yog tus nqi nominal.
e. Instantaneous pulse (impulse): ib qho voltage (los yog tam sim no) hloov uas tshwm sim nyob rau hauv ib tug luv luv lub sij hawm ntawm ob lub sij hawm sib law liag. Ib qho mem tes instantaneous tuaj yeem yog ib qho unidirectional mem tes ntawm polarity, los yog thawj lub ncov ntawm lub damped oscillation yoj tshwm sim ntawm polarity.
f. Voltage fluctuation (fluctuation) thiab flicker (flicker): Voltage fluctuation yog ib qho kev hloov pauv tsis tu ncua ntawm qhov hluav taws xob hauv lub hnab ntawv, lossis ib qho kev hloov pauv hloov pauv hloov nrog lub amplitude uas feem ntau tsis tshaj qhov ntau ntawm 0.9 txog 1.1 hluav taws xob. Flicker hais txog qhov pom kev cuam tshuam ntawm qhov hloov pauv ntawm qhov hluav taws xob ntawm lub teeb pom kev zoo.
g. Voltage notch: Voltage notch yog lub sij hawm luv luv Periodic voltage cuam tshuam nrog lub sij hawm ntawm 0.5 cycles. Kev ntsuas hluav taws xob feem ntau yog tshwm sim los ntawm qhov tam sim no hloov ntawm ib theem mus rau lwm qhov thaum lub zog hluav taws xob hluav taws xob muaj lub sijhawm luv luv ntawm ob theem cuam tshuam. Qhov zaus ntawm voltage notching yog siab heev thiab nws yog ib qho nyuaj rau ntes nws nrog cov pa harmonic tsom xam cov cuab yeej. Qhov no yog vim li cas qhov kev cuam tshuam hluav taws xob no tsis tau suav nrog yav dhau los thiab tsuas yog tau suav nrog tsis ntev los no.
h. Harmonics: Sinusoidal voltages lossis tam sim no nrog cov lej sib npaug ntawm qhov tseem ceeb yog hu ua harmonics. Harmonics yog tshwm sim los ntawm cov yam ntxwv nonlinear ntawm lub tshuab hluav taws xob thiab cov khoom siv fais fab.
i. Inter-harmonics: Sinusoidal voltages lossis tam sim no uas tsis yog tus lej sib npaug ntawm qhov tseem ceeb yog hu ua inter-harmonics. Fractional harmonics tsawg tshaj li qhov tseem ceeb zaus kuj muaj nyob rau hauv pawg no. Inter-harmonics yuav ua rau pom kev flicker hauv cov khoom siv teeb pom kev zoo.
j. Overvoltage: Qhov voltage (los yog tam sim no) kav ntev tshaj li 1 feeb, qhov amplitude yog 1.1-1.2 (unit value), thiab qhov zaus zaus ntawm lub system tseem yog tus nqi nominal.
k. Undervoltage: Qhov voltage (los yog tam sim no) kav ntev tshaj 1 feeb, qhov amplitude yog 0.8-0.9 (unit value), thiab qhov system zaus tseem yog tus nqi nominal.
Cov teeb meem hluav taws xob zoo tuaj yeem muab sau ua plaub yam hauv qab no: ① voltage fluctuation thiab flicker; ② harmonics; ③ voltage peb-theem tsis sib npaug; ④ voltage poob thiab fais fab tuag.