PDF
Full
Outline
In order to study the ion flow field problem near the ground of UHV DC transmission lines, the BPA method is applied to solve the ion flow field of bipolar DC transmission lines. The synthetic electric field is solved combined with the nominal electric field calculated by the successive image method. The ion flow field and synthetic electric field problems of ±800 kV DC transmission lines are calculated using the BPA method, and the effects of erection height, interelectrode distance, and sub-conductor radius on the synthetic electric field of UHV DC transmission lines are analyzed. In addition, the power-line method for solving the synthetic electric field strength is compared. The results show that the BPA method is accurate and effective in solving the ion flow field, and the calculation efficiency is greatly improved. Increasing the height of the wire erection and increasing the radius of the split sub-conductor can improve the electromagnetic environment near the ground, while reducing the interelectrode distance can reduce the synthetic electric field intensity near the ground, but the effect is not obvious.
PDF
108
30
| 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 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
