风速和温度对红外热像检测绝缘子的影响分析

Analysis of Effect of Wind Speed and Temperature on Infrared Thermal Image Detection of Insulators

为研究风速和温度对红外成像法检测绝缘子的影响,提高检测的准确性,根据绝缘子电压分布模型和发热模型进行了仿真分析,并通过试验验证其合理性。仿真和试验结果表明:温度对可检测劣化阻值范围的影响很小,而风速的提升会显著减小可检测范围,其减小程度与绝缘子的位置有关,高风速对检测中间位置的劣化绝缘子会产生更为不利的影响。

In order to analyze the impact of wind speed and temperature on detecting deteriorated insulator using infrared thermal image and to improve the accuracy, we simulated according to the voltage distribution of insulator and heating model of the insulator, and proved the rationality by experiment. Simulation and experiment show that there is little effect of temperature on detectable range, while the increase of wind speed will significantly reduce the detectable range. And the degree of reduction is related to the location of a insulator. The high wind speed will have a more adverse effect on detecting the deteriorated insulators in the middle.