Dab tsi yog qhov ua rau Insulation Aging?

1. Kev ntxhov siab hluav taws xob (Ib nrab tso tawm)

Kev laus hluav taws xob feem ntau tshwm sim los ntawmKev tso tawm ib nrab (PD). Cov no yog cov me me, cov hluav taws xob hauv cheeb tsam uas cuam tshuam cov rwb thaiv tsev nyob rau lub sijhawm.

Deg Erosion:High-Kev siv hluav taws xob tsim hluav taws xob tsim hluav taws xob, ozone, thiab cov khoom siv hluav taws xob uas lub cev ua rau cov khoom tawg, tsim micro-voids uas ua rau cov rwb thaiv tsev tsis muaj zog ntxiv mus txog thaum tsis ua hauj lwm .

Taug qab:Nyob rau hauv cov dej ntub thiab tsis muaj paug, cov dej ntws tawm tuaj yeem ua rau lub ntsej muag qhuav, tsim kom muaj cov pa roj carbon monoxide (kev taug qab) uas tuaj yeem ua rau muaj kev kub ntxhov.

2. Thermal Stress (Overheating)

Thaum tshav kub kub yog qhov tseem ceeb ntawm kev laus. Txhua 10℃qhov kub thiab txias tuaj yeem ua rau ib nrab ntawm lub rwb thaiv tsev lub neej (ib txoj cai hu ua 10℃txoj cai).

Overloading:Cov cuab yeej ua haujlwm dhau ntawm nws qhov ntsuas tam sim no ua rau muaj cua sov ntau dhau, ua kom cov tshuaj lom neeg tawg ntawm cov khoom siv insulating.

Kev sib txuas tsis zoo:Kev sib txuas xoob lossis oxidized ua rau cov chaw hotspots uas sai sai degrade cov rwb thaiv tsev nyob ze.

3. Cov xwm txheej ib puag ncig

Kev raug rau sab nraud ib puag ncig tseem ceeb ua rau kev laus.

UV hluav taws xob:Hnub ci ua rau duab- degradation ntawm cov ntaub ntawv polymer, ua rau chalking, cracking, thiab poob ntawm hydrophobicity (dej repellency). Qhov no tsim txoj kev yaig rau hluav taws xob tawm.

Moisture & Humidity:Dej ingress txo cov rwb thaiv tsev tiv thaiv thiab tuaj yeem ua rau hydrolysis (tshuaj lom neeg tawg ntawm polymers). Hauv thaj chaw ntug dej hiav txwv, ntsev sib sau rau ntawm qhov chaw ua rau muaj kev ua tau zoo, ua rau muaj cov dej xau ntau dua thiab muaj kev pheej hmoo flashover.

Pollution & Contaminants:Tshuaj lom neeg muaj kuab paug (kev lag luam fumes, acid nag) thiab ntsev yog heev corrosive. Cov kev tshawb fawb pom tias muaj kuab paug tuaj yeem nce tus nqi ntawm rwb thaiv tsev degradation.

4. Mechanical Stress

Lub cev muaj zog tuaj yeem cuam tshuam kev ruaj ntseg ntawm rwb thaiv tsev.

Kev vibration & Cycling:Kev co tsis tu ncua los ntawm cov conductors lossis thermal expansion / contraction tuaj yeem ua rau cov khoom qaug zog, tawg, thiab delamination ntawm kev sib tshuam ntawm cov khoom sib txawv (xws li, nruab nrab ntawm cov tub ntxhais thiab vaj tse ntawm cov khoom siv insulator).

Fiber Breakage:Hauv kev sib xyaw insulators, corrosion ntawm fiberglass pas nrig tuaj yeem ua "kev lwj-zoo li tawg," qhov twg cov iav fibers tawg thiab tus pas nrig tsis muaj zog, feem ntau ua ntej hluav taws xob tsis ua haujlwm.

Hauv kev ua haujlwm niaj hnub, kev laus yeej tsis muaj ib qho laj thawj; cov yam tseem ceeb no ua hauj lwm ua ke los ua phem rau cov teebmeem synergistically. Piv txwv li, ib tug kab mob insulator ua ib txoj hauv kev rau to tam sim no, uas generates tshav kub (thermal factor), accelerating tus tsim ntawm taug qab thiab tshwm sim flashover.

Kev saib xyuas tsis tu ncua, tu, thiab kev tshuaj xyuas thermographic yog txoj hauv kev zoo los kuaj xyuas cov cim ntxov ntawm cov kev laus no ua ntej lawv ua rau cov khoom siv tsis zoo.