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CN104539293A 一种基于压缩感知的电力行波信号重构方法 失效 - 权利终止

  • 专利标题： 一种基于压缩感知的电力行波信号重构方法
  • 专利标题（英）： Electricity travelling wave signal reconstructing method based on compressed sensing
  • 申请号： CN201410853545.7
    申请日： 2014-12-31
  • 公开(公告)号： CN104539293A
    公开(公告)日： 2015-04-22
  • 发明人: 叶波 , 孙科 , 杨春曦 , 李鸣 , 陈飞 , 罗琎
  • 申请人： 昆明理工大学
  • 申请人地址： 云南省昆明市五华区学府路253号
  • 专利权人： 昆明理工大学
  • 当前专利权人： 昆明理工大学
  • 当前专利权人地址： 云南省昆明市五华区学府路253号
  • 主分类号： H03M7/30
  • IPC分类号： H03M7/30
一种基于压缩感知的电力行波信号重构方法
摘要：
本发明涉及一种基于压缩感知的电力行波信号重构方法，属于电力行波信号处理领域。本发明首先利用行波检测装置获取原始行波信号并求出其在一定变换域中的稀疏表示系数，然后根据所选的测量矩阵形成字典矩阵，并将测量矩阵对原始行波信号进行线性投影得到观测向量，采用正交匹配追踪法对原始行波信号进行重构，得到重构后的行波信号，最后对重构后的行波信号进行验证。本发明与传统的电力系统行波信号重构方法相比，利用行波信号本身的稀疏性，应用压缩感知理论对电力行波信号进行重构，大大降低了采样频率，提高了计算速度，节省了采样与重构的时间。
摘要（英）：

The invention relates to an electricity travelling wave signal reconstructing method based on compressed sensing, and belongs to the field of the electricity travelling wave process. The method comprises: first, a travelling wave detecting device is used to obtain an original travelling wave signal and determine a sparse representing coefficient in a certain transforming area; and then a lexicon matrix is formed through a selected measurement matrix, the linear projection is carried out on the original travelling wave signal by the measurement matrix to obtain an observation vector, the orthogonal matching pursuit method is used to reconstruct the original travelling wave signal, and a reconstructed travelling wave signal is obtained; finally, the verification is carried out on the reconstructed travelling wave signal. Compared with the traditional electricity travelling wave signal reconstructing method, using the sparsity of the travelling wave signal and the compressed sensing theory, the reconstruction is carried out on the electricity travelling wave signal, the sampling frequency is greatly lowered, the calculating speed is improved, and the sampling and reconstructing time is saved.

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