浙江电力

2020, v.39;No.285(01) 73-82

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特高压输电线路分裂导线表面电场特性分析
Analysis of Surface Electric Field Characteristic of Bundled Conductor for UHV Transmission Lines

周驰
ZHOU Chi

摘要(Abstract):

特高压输电线路能减小走廊面积,有效提高单位输电线路走廊宽度的输电容量,从而提高输电线路的经济效益。特高压输电线路常采用多分裂导线,导线表面电场强度的计算精确度直接影响导线的合理选型和布置。为此,以有限元法为理论基础,以COMSOL Multiphysics软件为仿真工具,以1 000kV特高压交流输电线路为研究对象,建立典型特高压交流输电线路的二维静电场仿真模型,研究分析分裂导线在水平排列、同塔双回、正三角对称、倒三角紧凑型对称布置方式下周围空间电场的分布,以及地面是否水平、是否有杆塔等因素对电场分布的影响。分析结果可以为特高压交流输电线路的设计提供一定的参考。
Ultra-high voltage transmission lines can reduce corridor area and improve the transmission capacity at unit width of line corridor to improve economic benefits. Bundled conductors are widely used in highvoltage lines. The calculation accuracy of electric field intensity at the conductor surface affects its selection and allocation. Based on the finite element method and the simulation tool of COMSOL Multiphysics, and the study on 1 000 kV UHV AC transmission lines, a two-dimensional electrostatic field simulation model of typical UHV AC transmission lines is established to investigate and analyze the electric field distribution in the surroundings under horizontal arrangement, double circuits of the same tower, regular trigonometric symmetry and inverted trigonometric compact symmetry, and the impact of the ground level and tower on electric field distribution, which provides reference for design of ultra-high voltage AC transmission line.

关键词(KeyWords): 表面电场;有限元法;分裂导线;特高压交流输电线路
surface electric field;finite element method;bundled conductor;ultra-high voltage AC transmission line

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 周驰
ZHOU Chi

DOI: 10.19585/j.zjdl.202001012

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