Due to the differences in typical pollution sources, the soluble salt composition deposited on the naturally contaminated insulators varies with the region. As different soluble salts have different effects on the pollution flashover voltage of insulators, it is necessary to investigate the spatial and temporal distribution of the soluble salt composition deposited on the insulator surface to make the external insulation design more scientifically and reasonably. In this study, an artificial contamination test platform was built to collect the contamination naturally deposited on the specimens. The test results showed that the contamination composition deposited on the specimen was similar to that in the atmosphere, and the inclination angle of the specimen and the duration of pollution deposition had little influence on the contamination composition. After examining the industrial post insulators from actual substations, it was found that the contamination composition was almost the same for different insulator surface materials, insulator shed types, and voltage polarities. It was also found that the deposited contamination was mostly influenced by pollution sources. The results can provide a reference for the studies of pollution distribution of natural insulators.

中文翻译：

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绝缘子表面上累积的可溶性盐分的时空特征

由于典型污染源的差异，沉积在自然污染绝缘子上的可溶性盐成分随区域而异。由于不同的可溶性盐对绝缘子的污染闪络电压有不同的影响，因此有必要研究沉积在绝缘子表面的可溶性盐组合物的时空分布，以使外部绝缘设计更加科学合理。在这项研究中，建立了一个人工污染测试平台来收集自然沉积在样本上的污染物。测试结果表明，沉积在样品上的污染物成分与大气中的污染物成分相似，样品的倾斜角度和污染的持续时间对污染物的组成影响很小。在检查了实际变电站的工业后绝缘子后，发现对于不同的绝缘子表面材料，绝缘子脱落类型和电压极性，污染成分几乎相同。还发现沉积的污染物主要受污染源的影响。研究结果可为研究天然绝缘子的污染分布提供参考。还发现沉积的污染物主要受污染源的影响。研究结果可为研究天然绝缘子的污染分布提供参考。还发现沉积的污染物主要受污染源的影响。研究结果可为研究天然绝缘子的污染分布提供参考。