Using Corona Cameras as Reliable Tools to Diagnose Compromised Insulators Prior to Failure

電暈放電是非陶瓷絕緣子破損的(de)主要威脅。它不但會産生臭氧、氮氧化(huà)物(wù)并釋放出紫外線造成絕緣子的(de)腐蝕及分(fēn)解，進而破壞它的(de)力學性能和(hé)導電性能。一些用(yòng)戶和(hé)高(gāo)壓實驗室正在開展研究絕緣子耐久性和(hé)各種環境條件及老化(huà)之間的(de)關系。這(zhè)其中包括墨西哥(gē)研究團隊正在通(tōng)過使用(yòng)一種非接觸成像設備——紫外成像儀和(hé)使用(yòng)電場(chǎng)測試儀來(lái)進行對(duì)比分(fēn)析。使用(yòng)紫外成像儀可(kě)以大(dà)大(dà)提升預維護水(shuǐ)平，并最大(dà)化(huà)程度地優化(huà)維護維修，紫外成像儀是一種可(kě)靠地預維護檢測手段。

Corona discharge is a major threat to the integrity of non-ceramic polymer insulators (NCI). It produces Ozone, nitric oxides and emits Ultra Violet leading to erosion and decomposition of the insulators’ and affecting their mechanical and electrical properties. Ongoing research is performed by utilities and high voltage laboratories to investigate the endurance of insulators to various environmental conditions and to their aging patterns. One of the studies conducted in Mexico aimed at correlating between findings by a corona camera which is nondestructive optical device and an E-filed measurement equipment. The use of corona camera can alleviate the task of preventive maintenance and streamline the maintenance processes provided its output is indeed reliable.

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