Model optimization of pollution deposition criterion of insulators based on energy

In order to study the contamination characteristics of insulators under different conditions and to ensure the safe operation of electrical systems, the mechanical properties and motor characteristics/behavior of particles near the insulators were analyzed. A wind tunnel contamination test of a porcelain insulator was also conducted. The deposition criteria model based on energy of particles on the insulator surface was progressively optimized from three aspects: particle positive and negative charge ratio, insulator and particle surface energy, and particle size distribution. The effect of the contamination characteristics of the porcelain insulators in the wind tunnel was investigated, and the results showed that three optimization models were obtained. Compared with the Wind-tunnel contamination test results, the average relative error of the simulation results decreased by 6.6%, 21.5%, and 6.4%, respectively, and their surface deposit amount all display a consistent changing pattern with DC voltage variation and a V-shaped distribution, which verifies the rationality of the three optimization models. Thus, it can be used as a reference for numerical simulation of porcelain insulators.