The characteristics of negative corona discharge and radio interference at different altitudes based on coaxial wire-cylinder gap

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-11-13 DOI:10.1088/2058-6272/ad0c1d

Wangling He, Hongyu Wei, Yinlu Zhang, Yongcong Liu, Yunpeng Liu, Baoquan Wan, Yang Zhou, Yanzhao Wan, Zheyuan Gan

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Abstract

Abstract The corona discharge from transmission lines in high-altitude areas is more severe than that in plain areas. The radio interferences caused thereby are key factors to be considered in the design of transmission lines. To study the influence of altitude on the negative corona characteristics, a movable small corona cage experimental platform was established: experiments were conducted at four altitudes in the range of 1120‒4320m, and the corona current pulse and radio interference level of 0.8-mm diameter fine copper wire under different negative voltages were collected. The experimental results show that the average amplitude, repetition frequency, and average current of corona current pulse increase with the increase of altitude. The dispersion of pulse amplitude increases with the increase of altitude, while the randomness of pulse interval decreases continuously. Taking the average current as an intermediate variable, the relationship of radio interference level with altitude is obtained. The research has certain guiding significance for understanding the corona discharge characteristics of ultra-high voltage lines.

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基于同轴线筒间隙的不同高度负电晕放电特性及无线电干扰

摘要高原地区输电线路电晕放电比平原地区输电线路电晕放电严重。由此产生的无线电干扰是传输线设计中需要考虑的关键因素。为研究海拔高度对负电晕特性的影响，搭建了可移动小型电晕笼实验平台，在1120 ~ 4320m的4个海拔高度进行实验，采集不同负电压下直径为0.8 mm的细铜线的电晕电流脉冲和无线电干扰水平。实验结果表明，电晕电流脉冲的平均幅值、重复频率和平均电流随海拔高度的增加而增加。脉冲振幅的色散随海拔的升高而增大，而脉冲间隔的随机性不断减小。以平均电流为中间变量，得到了无线电干扰水平与海拔高度的关系。该研究对了解超高压线路电晕放电特性具有一定的指导意义。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.