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In this paper, a novel crosslinked network cellulose insulating paper was prepared by citric acid crosslinking modification, and the dielectric constant and dielectric loss factor of the insulating paper were measured before and after modification. Then the composite insulation system of the modified insulating paper and mineral insulating oil were carried out partial discharge and electrical life tests. The results show that compared with the unmodified insulating paper, the dielectric constant and dielectric loss factor of the novel crosslinked network insulating paper decreases by 15.39% and 29.78%, respectively, and the electrical life index increases by 37.94%. The novel crosslinked network insulating paper-insulating oil composite insulation system has lower discharge repetition rate, discharge energy, average discharge, and maximum discharge.
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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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