摘要
红外热像分析发现35 k V单芯电缆外护层温度异常,结合护层电流检测,确诊了电缆因护层接地错误而存在的缺陷。经过理论计算,确定了电缆护层应采取的正确接地方式,现场将电缆护层两端接地系统改为单端接地系统后,消除了缺陷。案例通过带电检测发现问题从而实现问题的有效解决,表明带电检测技术可以提高检修的针对性,实现设备的精准检修。
A 35kV sheath grounding of single core cable temperature abnormally was found by infrared temperature measurement, combined with electric current detection method, we have making sure about that the cable grounding sheath was installed in wrong grounding mode. According to theoretical calculation, a proper grounding mode has been adopted. The cable sheath grounding at each end system has been changed to single-end grounding system, therefore, the fault has been solved. Electrification detection technology is not only a method which is contributed to find problems, but also supply a way to solve problems. It shows that electrification detection technology can improve the effect of overhaul operations.
出处
《电线电缆》
2017年第4期33-35,共3页
Wire & Cable
关键词
带电检测
红外测温
电力电缆
状态检测
electrification detection technology
infrared temperature measurement
power cable
state detection
