电力外绝缘污秽颗粒等效模型和粒径分布探讨

为今后实现自然积污规律研究和防污的差异化,对污秽颗粒等效简化模型、大气总悬浮颗粒物(TSP)的粒径分布函数、绝缘表面污秽主要化学成分对应TSP的粒径分布进行了综述和分析,认为可以污秽颗粒可等效简化为球体,使用空气动力学粒径衡量其粒径;建立TSP粒径分布函数拟合模型;分析认为化学成分Ca2+、SO42-、Cl-、SiO2、Al2O3在TSP中的粒径主要分布在1.8~10μm,0~10μm,1.8~10μm,30-40μm,40μm~50μm的范围内,最后对自然积污规律研究和防污的差异化进行了展望。

Discussing about the Equivalent Model and Particles Size Distribution of Pollution Prticles of Power System External Insulation

The equivalent simplified model of particulate pollution,the function of the particles size distribution function of atmospheric total suspended particulate(TSP) and the particles size distribution of TSP corresponding to the chemical components of insulators surface pollution are summarized and analyzed,in order to realize the nature pollution rules research and differentiation of anti-pollution in future.It is considered that pollution particles can be equivalently simplified to the sphere,which use the aerodynamic particle size to measure its diameters;the matching model of the particles size distribution of TSP is established;the analysis shown that the ranges of chemical composition Ca2+、SO24-、Cl-、SiO2and Al2O3 were concentrated in the 1.8~10 μm,0~10 μm,1.8~10 μm,30-40 μm,40 μm ~50 μm,finally the nature pollution rules research and differentiation of anti pollution are prospected.