超声技术在1100kV盆式绝缘子金属夹杂物检测中的应用研究
The 0.8-0.25 mm diameter aluminum inclusions, bonded on the bottom surface of the epoxy casting insulator with a thiclrness of 52 mm, were tested quantitatively using ultrasonic technique. The root mean square deviation (RMSD) which is based on the power spectrum of the reflected wave at the original and several damage states was introduced as damage index. The results show that when aluminum inclusions exist in the insulation, the time delay between the initial and reflected waves increased in the time domain, and the RMSD values decreased with the decreasing of aluminum inclusion diameter. The aluminum inclusion with the diameter of 0.25 mm can be effectively tested with ultrasonic technique. This study provides experimental data accumulation for the application of ultrasonic testing technique in the epoxy casting insulation.
盆式绝缘子 金属夹杂物 超声技术 检测灵敏度
Liucheng Hao Jicheng Li Hao Tian Duanpeng Yuan
Henan Pinggao Electric Co.Ltd., Pingdingshan, Henan, China
国内会议
西安
中文
325-326
2013-10-17（万方平台首次上网日期，不代表论文的发表时间）