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In order to relieve the conflict between tight land supply and land acquisition for transmission lines in tight land supply area, we developed a new structural type of composite material insulated tower, which looked like a rocket, and the wires passed through the insulated composite material rocket tower to compress the line corridor to the greatest extent. Besides, the electrical performance of the 110 kV composite rocket tower was systematically studied. The results indicate that the dry lightning impulse voltage of the 110 kV composite rocket tower is 979 kV, the impulse voltage under wet condition is 576 kV, the average value of 1 min wet power frequency flashover voltage is 282 kV, and the power frequency pollution flashover voltage at 0.20 mg/cm2 of salt density and 1.00 mg/cm2 of gray density is 106.2 kV. Compared with the traditional 110 kV suspension composite insulator iron tower, the lightning impulse voltage value of 110 kV composite rocket tower increases by 78%, the impulse voltage value under wet condition increases by 34%, the 1 min withstand wet power frequency flashover voltage increases by 22.6%, and the pollution flashover voltage value is equivalent. In addition, the line corridor is greatly compressed, and the minimum line corridor width is 1.8 m, which is much smaller than the corridor width value (5.5-7.5 m) of 110 kV iron tower.
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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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