基本信息:
- 专利标题： 一种高压直流线路电晕电流变化趋势提取方法
- 专利标题（英）：High-voltage direct-current line corona current change trend extraction method
- 申请号：CN201510484554.8 申请日：2015-08-07
- 公开(公告)号：CN105160077A 公开(公告)日：2015-12-16
- 发明人： 刘元庆 , 王秋生 , 宋佳玲 , 陆家榆 , 袁海文
- 申请人： 中国电力科学研究院 , 国家电网公司 , 北京航空航天大学
- 申请人地址： 北京市海淀区清河小营东路15号
- 专利权人： 中国电力科学研究院,国家电网公司,北京航空航天大学
- 当前专利权人： 中国电力科学研究院,国家电网公司,北京航空航天大学
- 当前专利权人地址： 北京市海淀区清河小营东路15号
- 代理机构： 北京安博达知识产权代理有限公司
- 代理人： 徐国文
- 主分类号： G06F17/50
- IPC分类号： G06F17/50
The invention relates to a high-voltage direct-current line corona current change trend extraction method which comprises: 1, acquiring a discrete spectrum of corona current measurement data; 2, configuring an initial condition of variation mode decomposition; 3, according to the initial condition, partitioning the corona current discrete spectrum into a plurality of mode components; 4, performing energy calculation on the discrete spectrum of each mode component and obtaining a remarkable model component containing main energy; and 5, performing fourier inverse transformation on the remarkable mode component, thereby obtaining a corona current change trend. The technical scheme is capable of reducing the corona current signal energy loss as much as possible, meanwhile effectively restraining various noises in corona current measurement data and finally extracting the corona current signal change trend.