高压电缆及其附属设备异常原因分析

电气设备绝缘类故障一般故障区域都会出现温度异常，利用红外检测技术对电缆线路及其附属设备进行红外检测可以及时发现设备内部潜伏性缺陷。本文通过长春地区发生的高压电缆线路避雷器爆炸以及电缆终端接地引线过热两起异常事件的分析，论述了应用红外测温技术对电力设备进行带电检测的重要性。

The Analysis to the causese for Breakdowns of High-Voltage Cable and Its Accessories

As the insulating faults of electrical equipment often come along with anomalous temperature in fault areas, we can exploit the technology of infrared detection to take test tot the cable lines and their accessories so as to discover the potential defects timely in internal part of such devices. This article investigates the importance of using infrared detection technology for hot-line testing of the electrical devices. The above view is illustrated by two cases happening in Changchun. One is the explosion of arrestor in high-voltage cable lines and the other is the overheating of ground lead in the end of cable lines.