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On the basis of the impregnation mechanism analysis of oil-paper insulation, a test model of mixed insulating oil-paper impregnation was designed, and the main factors affecting the impregnation process of oil-paper insulation were discussed. The relationship diagram of the insulation impregnation length of mixed insulation oil-paper insulation with time was obtained through experiments, and it was compared with that of mineral oil-paper insulation. The results show that the impregnation effect of mixed insulating oil-paper insulation is weaker than that of mineral insulating oil, but the difference is slight. When the impregnation temperature and vacuum degree increase at the same time, the impregnation effect of the two kinds of insulating oil-paper insulation improves significantly in the impregnation stage of 12-36 h. The oil injection process of the mixed oil transformer was implemented on actual transformer, and the effectiveness of the process is verified by the high voltage test.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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