In the long-term operation process, due to the ageing of transformer oil for offshore wind power, the moisture and other impurities will be produced, which may cause transformer insulation failure, resulting in economic losses and safety accidents. Thus, it is urgent to propose an effective method of transformer oil filteration and judgment to improve the transformer oil performance and evaluate its ageing status. In this paper, the oil filter film was conducted superhydrophobic modification, and the effects of the number of oil filtration, the type of film, and the superhydrophobic modification on the properties of oil before and after filtration were investigated. The health classification model of transformer oil was established by support vector machine algorithm. In addition, a new method based on machine learning was proposed to evaluate the oil filtering effect of superhydrophobic film. The results show that the oil filtering performance of the film after superhydrophobic treatment is improved greatly. Especially after three times of modified organic film filtration, the comprehensive performance of transformer oil has significantly improved, meeting the applicable standard of transformer oil. Compared with several algorithms, the model built by support vector algorithm has the highest accuracy of 84.8%.
| 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 |