复合绝缘子隐蔽性缺陷及检测方法 Concealment Defects of Composite Insulators and Their Detection Methods

本文主要介绍了复合绝缘子在输电线路中的重要作用，对于国内复合绝缘子在使用中出现的一些主要问题，如芯棒断裂、机械性能、界面击穿及老化性能等缺陷进行简单概括，并列举出各种无损检测方法，重点介绍超声波无损检测方法。 This paper introduces the important role of composite insulators in transmission lines; briefly summarizes some major problems such as mandrel breakage, mechanical properties, interface breakdown and aging performance in the use of composite insulators in China; and lists a variety of non-destructive testing methods, focusing on ultrasonic nondestructive testing methods.