Surge voltage thiab impulse voltage yog ob hom kev overvoltages uas tuaj yeem tshwm sim hauv cov tshuab hluav taws xob, tab sis lawv txawv ntawm lawv cov yam ntxwv, ua rau, thiab cov teebmeem:
Surge voltage:
Surge voltage, tseem hu ua voltage surge los yog transient voltage, yog ib ntus thiab tam sim ntawd nce nyob rau hauv voltage uas tshaj qhov kev khiav hauj lwm voltage theem ntawm lub system.
Kev nce siab feem ntau yog tshwm sim los ntawm lwm yam xws li xob laim, kev hloov pauv, lossis kev cuam tshuam ntawm lub zog.
Surge voltages tuaj yeem muaj ntau yam nthwv dej, suav nrog cov nthwv dej oscillatory, damped oscillatory tsis, thiab cov nthwv dej ib ntus, nyob ntawm qhov chaw thiab cov yam ntxwv ntawm kev cuam tshuam.
Surge voltages tuaj yeem ua rau muaj kev puas tsuaj rau cov khoom siv hluav taws xob, rwb thaiv tsev tawg, thiab cuam tshuam ntawm lub zog hluav taws xob yog tias tsis muaj kev tiv thaiv zoo.
Impulse voltage:
Impulse voltage, tseem hu ua xob laim impulse voltage los yog xob laim surge voltage, yog ib tug high-voltage mem tes nrog lub sij hawm sai thiab luv luv.
Impulse voltages feem ntau yog tshwm sim los ntawm xob laim ntaus lossis hloov ua haujlwm hauv cov tshuab hluav taws xob high-voltage.
Impulse voltages muaj cov yam ntxwv waveform tshwj xeeb, feem ntau tshwm sim los ntawm lub sij hawm nce ceev (nanoseconds mus rau microseconds) thiab ib qho exponential decay.
Impulse voltages tuaj yeem ua rau rwb thaiv tsev tawg, flashover, thiab kev puas tsuaj rau cov khoom siv hluav taws xob vim qhov siab tshaj qhov hluav taws xob thiab lub zog cov ntsiab lus ntawm impulse waveform.
Hauv cov ntsiab lus, qhov sib txawv tseem ceeb ntawm qhov hluav taws xob thiab impulse voltage nyob hauv lawv cov yam ntxwv waveform, ua rau, thiab cuam tshuam. Surge voltage hais txog qhov nce ib ntus hauv qhov hluav taws xob uas tshaj qhov kev khiav hauj lwm voltage thiab muaj peev xwm muaj ntau yam waveforms, thaum impulse voltage hais tshwj xeeb rau high-voltage pulses nrog ceev ceev lub sij hawm thiab luv luv lub sij hawm feem ntau tshwm sim los ntawm xob laim ntaus los yog switching ua hauj lwm. Ob qho tib si surges thiab impulse voltages ua rau muaj kev pheej hmoo rau cov tshuab hluav taws xob thiab khoom siv thiab yuav tsum muaj kev tiv thaiv tsim nyog los txo lawv cov teebmeem.