宁夏电力Issue(z1)：49-54,66,7.DOI:10.3969/j.issn.1672-3643.2023.S1.010
雾霾天气对高压直流输电线路可听噪声影响研究
Study on the influence of haze weather on audible noise of HVDC transmission lines
钱勇 1高小奇 1吴杨 1韩利 1方济中1
作者信息
- 1. 国网宁夏电力有限公司电力科学研究院,宁夏 银川 750011
- 折叠
摘要
Abstract
To study the influence of haze on the audible noise of high-voltage direct current(HVDC)transmission lines,a calculation method with the influence of haze taken into account is proposed for prediction of the audible noise of HVDC transmission lines.Firstly,a calculation model of ionic flow field of HVDC transmission lines under haze weather was established,and the effects of different haze levels on space charge,ion mobility and halo field strength were taken into account.The process of calculating the maximum potential gradient on the conductor surface with the ionic flow field model was given.Next,the correlation between audible noise and the maximum potential gradient on the conductor surface was analyzed.Finally,combined with the effects of the number of split conductors and different diameters of conductors on audible noise,the prediction formula of audible noise with a wide range of applications was proposed,and the relationships between different haze levels and different haze particulate concentrations and audible noise were also analyzed.Taking the±800 kV DC transmission line as an example,its audible noise under haze weather was calcula-ted.The results show that the audible noise increases as the haze level increases.The charge of particles in the haze is the main reason for the increase of audible noise,and PM2.5 is the most influencial factors.The proposed ion flow field calculation model and audible noise prediction formula can be popularized and applied to the assessment of audible noise in high-voltage direct current transmission lines with certain application value for the engineering.关键词
高压直流输电/雾霾/可听噪声/离子流场/表面最大电位梯度Key words
HVDC/haze/audible noise/ion flow field/surface maximum potential gradient分类
信息技术与安全科学引用本文复制引用
钱勇,高小奇,吴杨,韩利,方济中..雾霾天气对高压直流输电线路可听噪声影响研究[J].宁夏电力,2023,(z1):49-54,66,7.
