Cov txheej txheem tshawb nrhiav dab tsi tuaj yeem siv rau kev tso tawm ib nrab?

Thaum kuaj pom ib feem tawm hauv high-voltage switchgear, nws yuav yooj yim dua yog tias peb tuaj yeem ua haujlwm ntawm qhov chaw tsis cuam tshuam nrog lub zog hluav taws xob. Txoj kev ua tau zoo tshaj plaws yog nyob ib puag ncig kev kuaj xyuas cov cim RF sib txawv.
Kev sib xyaw ntawm cov sensors ua kom yooj yim txheeb xyuas ntawm ntau hom kev tawm ib nrab. Ib nrab tso tawm generates transient av voltage (TEV) - high-frequency electromagnetic pulses. Lub teeb liab TEV dhau los ntawm sab hauv ntawm lub switchgear thiab khiav tawm mus rau sab nraud los ntawm kev qhib (xws li gaskets) hauv cov khoom hlau. Los ntawm kev tso lub TEV sensor sab nraum lub switchgear los ntsuas cov pulses, ib feem ntawm qhov paug tawm tuaj yeem kuaj pom.
Txoj kev TEV muaj txiaj ntsig tshwj xeeb hauv kev kuaj xyuas qhov tso tawm sab hauv. Cov acoustic emissions generated los ntawm ib feem ntawm cov kev ua ub no feem ntau yog nyob rau hauv frequencies uas siab heev nyob rau hauv tib neeg pob ntseg, xws li ultrasound. Raws li ib feem ntawm qhov tso tawm deteriorates, qhov zaus qee zaum txo qis mus rau qhov kev hnov ​​​​lus. Thaum muaj txoj hauv kev huab cua ntawm qhov chaw thiab lub microphone, siv lub onboard ultrasonic microphone yog txoj kev rhiab tshaj plaws rau kev kuaj PD. Hu rau hom ultrasonic sensors tuaj yeem siv rau cov chav kaw.
Txoj kev ultrasonic yog tshwj xeeb tshaj yog zoo nyob rau hauv kev soj ntsuam nto ib feem paug tawm thiab corona ib nrab paug.
Nkag siab txog kev saib xyuas kev tso tawm ib nrab
High voltage switchgear thiab cable tsis ua hauj lwm yuav ua rau ntau lab kev kho, hloov, thiab nplua. Txawm li cas los xij, feem ntau qhov txhaum tsis tshwm sim ib zaug - lawv tuaj yeem kwv yees tau los ntawm cov cim ceeb toom, tshwj xeeb tshaj yog ib feem (PD).