基于红外热像的低零值绝缘子检测技术研究

Research on Low and Zero Resistance Insulators Detection Technique Based on Infrared Thermal Imaging

分析了绝缘子串的电压分布及发热功率,归纳了低零值绝缘子红外热像图谱特征,采用红外热像技术进行绝缘子带电检测,现场检测结果表明,红外热像技术可通过遥测绝缘子串温度特征来判断绝缘子绝缘性能。该种方法能有效发现低零值绝缘子,具有工作效率高、安全等优点。

The voltage distribution and heating power of insulator string are analyzed,the spectral characteristics of infrared thermal imaging for low and zero resistance insulators are summarized,and the infrared thermal imaging technique is proposed to detect low and zero resistance insulators. Test results show that it can judge the insulation property of insulators by measuring the temperature characteristics of insulator string,which can effectively detect low and zero resistance insulators with high work efficiency and safety.