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

电晕放电是非陶瓷绝缘子破损的主要威胁。它不但会产生臭氧、氮氧化物并释放出紫外线造成绝缘子的腐蚀及分解，进而破坏它的力学性能和导电性能。一些用户和高压实验室正在开展研究绝缘子耐久性和各种环境条件及老化之间的关系。这其中包括墨西哥研究团队正在通过使用一种非接触成像设备——紫外成像仪和使用电场测试仪来进行对比分析。使用紫外成像仪可以大大提升预维护水平，并最大化程度地优化维护维修，紫外成像仪是一种可靠地预维护检测手段。

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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