基于改进形态学的户外设备凝露发展过程研究及防凝露措施优化

户外设备柜顶内壁凝露后,极易滴落到设备表面,危害电路设备的正常运行。针对上述现象,首先在人工环境气候室内搭建了真型开关柜凝露实验系统,观测凝露发展过程;然后在改进膨胀腐蚀型梯度算子的基础上,采用不同方向、尺寸结构元素对凝露图像进行边缘提取,并进行量化处理,统计各区域总灰度值。结果表明:开关柜柜顶内壁边缘部位的水珠更多,且从外到内各区域总灰度值逐渐减小,即凝露是由边缘部位向中间发展的。最后,从防止凝露产生和排出凝露两个方面,设计了一种防凝露的方案,为实际工程提供参考。

Research of Outdoor Equipment Condensation Development Process Based on Improved Morphology and Optimization of Condensation Prevention Measures

It is easily dripped onto the surface of devices after condensation formed on outdoor equipment roof inner wall, which harms the normal operation of the circuit devices. In connection with the phenomenon, firstly, a real condensation experiment system of the switchgear is set up to observe the development process of condensation, then, on the basis of improved expansion and corrosion type gradient operator, different directions and sizes of the structural elements are used to extract the edge of the condensation image, and quantitative disposal is used to count the total gray value of each area. The results show that, the drops of the edge is more than other sites of switchgear roof inner wall, and the total gray value of each area gradually decreases from the outside to inside, that is condensation is spread from the edge to the middle. Finally, a program of condensation prevention is designed by considering both preventing and exhausting condensation, which can provide a reference for practical engineering.