1. Nws yuav tsum tau muab ntsia rau ntawm sab nyob ze rau lub transformer tis
Cov hlau oxide ntes (MOA) txuas nrog rau kev sib txuas nrog cov khoom siv hluav taws xob xa tawm thaum lub sijhawm ua haujlwm ib txwm muaj, qhov kawg sab saud txuas nrog rau txoj kab, thiab qis kawg yog hauv av. Thaum muaj ib qho overvoltage ntawm txoj kab, lub tis transformer nyob rau lub sij hawm no yuav tiv taus qhov peb feem voltage poob generated thaum lub overvoltage dhau los ntawm tus neeg ntes, cov hlau lead thiab cov khoom siv hauv av, uas yog hu ua residual voltage. Ntawm peb feem ntawm overvoltage, qhov seem voltage ntawm tus ntes yog cuam tshuam rau nws tus kheej kev ua tau zoo, thiab nws qhov seem voltage nqi yog qhov tseeb. Cov hluav taws xob seem ntawm cov khoom siv hauv av tuaj yeem raug tshem tawm los ntawm kev sib txuas ntawm cov khoom siv hauv av mus rau qhov kev faib tawm transformer casing thiab txuas mus rau cov khoom siv hauv av. Yuav ua li cas txo qhov seem ntawm qhov hluav taws xob ntawm cov hlau lead ua tus yuam sij los tiv thaiv cov transformer faib. Lub impedance ntawm cov hlau lead yog cuam tshuam nrog qhov zaus ntawm qhov tam sim no dhau los ntawm nws. Qhov siab dua qhov zaus, qhov inductance ntawm cov hlau muaj zog thiab qhov impedance ntau dua. Los ntawm U=IR, nws tuaj yeem pom tias kom txo qis qhov seem ntawm cov hlau lead, cov hlau lead impedance yuav tsum raug txo, thiab txoj hauv kev ua tau los txo cov hlau lead impedance yog kom txo qhov kev ncua deb ntawm MOA thiab kev faib khoom. transformer, thiaj li yuav txo tau cov hlau lead impedance thiab txo cov hlau lead voltage poob, yog li ntawd tus ntes yuav tsum tau ntsia ze rau lub tis transformer.
2. Qhov qis-voltage sab ntawm lub transformer faib yuav tsum tau muab ntsia
Yog tias tsis muaj MOA ntsia rau ntawm qhov qis-voltage ntawm cov khoom siv hluav taws xob, thaum lub siab-voltage sab ntes tawm cov hluav taws xob tam sim no mus rau hauv av, qhov hluav taws xob poob yuav raug tsim tawm ntawm cov khoom siv hauv av, thiab qhov hluav taws xob poob yuav ua rau tib lub sijhawm. ntawm qhov nruab nrab ntawm qhov qis-voltage sab winding los ntawm kev faib transformer casing. Yog li ntawd, xob laim tam sim no ntws nyob rau hauv qhov qis-voltage sab winding yuav ua rau muaj peev xwm loj (txog 1000 kV) nyob rau hauv high-voltage sab winding raws li qhov kev hloov pauv. Qhov no tej zaum yuav superimposed nrog lub xob laim voltage ntawm high-voltage sab winding, uas ua rau lub nruab nrab point peev xwm ntawm high-voltage sab winding. sawv, rhuav tshem cov rwb thaiv tsev ze ntawm qhov nruab nrab. Yog tias MOA raug teeb tsa rau sab qis-voltage, thaum lub siab-voltage sab MOA tso tawm thiab nce lub peev xwm ntawm cov cuab yeej hauv av mus rau ib qho nqi, qhov qis-voltage sab MOA pib tawm, thiaj li muaj peev xwm sib txawv ntawm qhov low-voltage sab winding qhov hluav taws xob kawg thiab nws qhov nruab nrab taw tes thiab lub plhaub yog txo. Muaj peev xwm tshem tawm lossis txo cov txiaj ntsig ntawm "inverse transformation" muaj peev xwm.
3. Lub MOA hauv av xaim yuav tsum tau txuas nrog lub plhaub hloov pauv
Cov hlau hauv av ntawm MOA yuav tsum tau txuas ncaj qha mus rau cov ntaub ntawv xa tawm transformer, thiab tom qab ntawd cov ntaub ntawv txuas nrog lub ntiaj teb. Nws yog qhov tsis ncaj ncees lawm kom txuas cov av xaim ntawm tus neeg ntes mus rau hauv av ncaj qha, thiab tom qab ntawd coj lwm cov av xaim los ntawm cov ceg txheem ntseeg hauv av mus rau lub transformer casing. Tsis tas li ntawd, hauv av xaim ntawm tus ntes yuav tsum luv li sai tau kom txo tau qhov seem seem.
4. Kev kuaj xyuas tsis tu ncua nyob rau hauv nruj raws li cov kev cai ntawm cov kev cai
Tsis tu ncua ntsuas cov rwb thaiv tsev tiv thaiv thiab cov xau tam sim no ntawm MOA. Thaum lub rwb thaiv tsev tiv thaiv ntawm MOA pom tau tias txo qis lossis tawg, nws yuav tsum tau hloov tam sim ntawd kom ntseeg tau tias muaj kev nyab xeeb thiab noj qab nyob zoo ntawm cov khoom siv hluav taws xob.
