Dab tsi yog qhov creepage nrug ntawm ib qho insulator

Qhov kev ncua deb ntawm cov polymer insulators yog qhov luv tshaj plaws nyob rau hauv lub insulator nto ntawm cov hlau qhov chaw ntawm txhua qhov kawg ntawm lub insulator, uas yog ib qho tseem ceeb rau kev tiv thaiv hluav taws xob arcing thiab kom muaj kev ruaj ntseg tiv thaiv electrocution los yog hluav taws kub txaus ntshai nyob rau hauv hluav taws xob circuits. Nws txawv raws li daim ntawv thov thiab raug cuam tshuam los ntawm yam xws li kev ua haujlwm voltage thiab ib puag ncig. Txawm li cas los xij, Creepage nrug kuj tseem tuaj yeem raug xa mus raws li qhov deb ntawm cov insulators.

Yog hais tias qhov deb ntawm qhov creepage luv dhau lawm, cov kab mob xws li plua plav, ntsev, lossis dej noo tuaj yeem ua rau lub qhov dej tawm los yog hluav taws xob tawg, ua rau lub rwb thaiv tsev tsis ua haujlwm thiab hluav taws xob. Yog li ntawd, xaiv qhov tseeb creepage nrug raws li cov pa phem theem, qhov system voltage, thiab ib puag ncig tej yam kev mob yog qhov tseem ceeb rau kev nyab xeeb thiab kev cia siab ntawm lub hwj chim kis tau tus mob thiab tis systems.

Kev xaiv ntawm qhov tsim nyog creepage nrug thiab clearances nyob rau hauv ib tug converter chaw nres tsheb yog ib qho tseem ceeb nam ntawm rwb thaiv tsev kev sib koom tes. Qhov yuav tsum tau nkag mus deb rau ib qho khoom siv tshwj xeeb yog nyob ntawm ib puag ncig uas nws ua haujlwm. Feem ntau, qhov creepage ntev nce nyob rau hauv kev faib ua feem mus rau qhov siab tshaj plaws nruam voltage.

Nyob rau hauv qhov huv si, huab cua-cua li qub hauv qhov chaw ib puag ncig, qhov kev nkag deb ntawm kwv yees li 14 hli ib kV (nruab nrab) feem ntau yog txaus. Txawm li cas los xij, nyob rau hauv ib puag ncig muaj kuab paug-xws li cov uas tau ntsib ntawm DC overhead kab lossis cov khoom siv hloov pauv sab nraum zoov nyob hauv thaj chaw muaj kev lag luam- qhov deb ntawm qhov tob txog li 40 mm ib kV (peak), lossis ntau dua, tej zaum yuav tsim nyog los xyuas kom meej qhov ua tau zoo.

Cov hluav taws xob clearances nyob rau hauv ib tug converter chaw nres tsheb yog tsuas yog tswj los ntawm xob laim impulse thiab switching impulse withstand voltage yuav tsum tau.

Wuhan Kab Fais Fab, ua ib qho ntawm cov khoom tsim nyog ntawm Lub Xeev Grid Corporation ntawm Tuam Tshoj, muaj ntau yam sib xyaw insulator pwm. Peb lub Hoobkas tuaj yeem muab cov khoom siv insulator ntev raws li cov neeg siv khoom tshwj xeeb daim ntawv thov ib puag ncig kom tau raws li ntau yam kev xav tau.

Cov txiaj ntsig zoo ib yam rau lub hau thiab tus pin insulator hlua lossis post insulators ntawm 132 kV nyob rau hauv cov pa phem heev, kev faib tawm IV, yuav raug txiav txim raws li hauv qab no: