中文摘要：

特高压直流输电线路的局部放电会导致导线上出现电晕电流,造成电能损失和电磁环境干扰等问题。为了实现对具有复杂噪声成分的超长电晕电流信号的分析,满足实测电晕电流信号分析与处理的客观需求,在MATLAB软件平台下,设计并开发了电晕电流信号分析和处理软件,完成电晕电流信号的存取、显示、分析和处理;通过配置不同的参数,实现电晕电流信号中多种噪声的有效滤除和趋势成分的高效提取。开发的软件界面简洁、操作性强,可以高效地分析电晕电流信号,可视化显示分析结果,测试结果验证了所述软件开发方法的有效性和实用性。

英文摘要：

Partial discharge of the ultra-high voltage direct current （UHVDC） transmission line will cause corona current, which results in power loss, electromagnetic environment interference, and other issues. In order to ana-lyze overlong corona current with complex noise components and meet the objective needs of the analysis and pro-cessing for measured corona current, a corona current signal analysis and processing software is designed and devel-oped under the MATLAB platform in this paper. This software can be used to access, display, analyze and process corona signal. Through different parameter configuration, multiple noises can be suppressed effectively and the trend of corona current can be extracted successfully. The software with simple interface and operation can analyze the co-rona current efficiently and display the analysis and processing results visually. Test results verify the validity and a-vailability of the proposed software development method.