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In order to study the influence of typical defects at the silicone rubber/cross-linked polyethylene (SR/XLPE) composite interface of cable terminal on the electric field, temperature field, and stress field distribution, a 10 kV cable termination simulation model was established by using COMSOL Multiphysics simulation software. The electric-thermal-force field distribution with metal particles, semiconducting particles, and scratch defects on the composite interface was simulated. The results show that the electric field, temperature field, and stress field on the interface defect area are distorted to different degrees when metal particles or semi-conductive particles exist on the composite interface of cable terminal, and the influence of metal particles on the physical field distribution at the interface is more obvious. For the air gap defect caused by the scratch of XLPE at the truncation of outer semiconductive layer, it is found that the electric field at the interface air gap defects is distorted and local hot spots are generated. The coating of silicone grease on the interface can obviously improve the distortion of electric field and temperature field at the scratch, but the stress distribution in the scratch area is not uniform due to the filling of silicone grease, and the stress is high at both ends and is low in the middle.
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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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