Quantitative study on the impact of air humidity on ion flow field and ground Electrical parameters of ±800 kV UHVDC transmission lines

IF 2.1 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electrostatics Pub Date : 2025-09-09 DOI:10.1016/j.elstat.2025.104169

Zhaobing Han , He Zhu , Tuoxin Fu , Zhuang Tian

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引用次数: 0

Abstract

—UHV DC transmission lines have long transmission distance and complex terrain and meteorological conditions along the way. The ion flow field of UHVDC transmission lines is significantly affected by environmental conditions and meteorological factors. Changes in meteorological conditions such as rainfall, wind speed, fog, temperature and humidity will lead to changes in the ion flow field near the UHV DC transmission line corridor. Therefore, it is of great practical value to study the influence of other meteorological conditions on the ion flow field by studying the distribution of synthetic electric field(the resultant electric field generated by multiple electric fields at the same point) and ion current density near the UHV DC transmission line under air humidity conditions. In this paper, a calculation model of ion flow field considering the influence of air humidity is established. Taking Yunguang ±800 kV transmission line as the research object, the ion flow field affected by air humidity is calculated. The distribution law of the surface synthetic electric field and ion flow density affected by air humidity is analyzed, and the validity of the calculation results is verified.

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空气湿度对±800kv特高压直流输电线路离子流场及接地电气参数影响的定量研究

——特高压直流输电线路传输距离长，沿途地形、气象条件复杂。特高压直流输电线路的离子流场受环境条件和气象因素的影响较大。降雨、风速、雾、温度、湿度等气象条件的变化会导致特高压直流输电线路走廊附近离子流场的变化。因此，通过研究空气湿度条件下特高压直流输电线路附近的合成电场（多个电场在同一点产生的合成电场）和离子电流密度的分布，研究其他气象条件对离子流场的影响具有重要的实用价值。本文建立了考虑空气湿度影响的离子流场计算模型。以云光±800kv输电线路为研究对象，计算了空气湿度对离子流场的影响。分析了空气湿度对表面合成电场和离子流密度的影响规律，验证了计算结果的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Electrostatics 工程技术-工程：电子与电气

CiteScore

4.00

自引率

11.10%

发文量

审稿时长

49 days

期刊介绍： The Journal of Electrostatics is the leading forum for publishing research findings that advance knowledge in the field of electrostatics. We invite submissions in the following areas: Electrostatic charge separation processes. Electrostatic manipulation of particles, droplets, and biological cells. Electrostatically driven or controlled fluid flow. Electrostatics in the gas phase.