Transient Protection Method for Transmission Lines Based on Similarity of Time-Frequency Matrix
作者：
李泽文;贺子凝;郭田田;胡开庚;刘基典
通讯作者：
Li, Zewen(lzw0917@163.com)
作者机构：
[李泽文; 贺子凝; 胡开庚; 刘基典] Ministry of Engineering Center for Power System Security and Supervisory Control Technology, Changsha University of Science and Technology, Changsha
410114, China
State Grid Xiangtan Power Supply Company, Xiangtan
411104, China
[郭田田] State Grid Liaocheng Power Supply Company, Liaocheng
通讯机构：
[Li, Z.] M
Ministry of Engineering Center for Power System Security and Supervisory Control Technology, Changsha University of Science and Technology, Changsha, China
语种：
中文
关键词：
输电线路;暂态保护;S变换;时频特征;矩阵相似度
关键词(英文)：
Matrix similarity;S-transform;Time-frequency characteristics;Transient protection;Transmission line
In order to improve the reliability of the traditional transient protection, a novel protection method of transmission line based on the fault information of broadband transient signals both in time domain and frequency-domain is proposed. In the proposed protection method S-transform is utilized to extract fault information of broadband transient signals in frequency bands and time periods, and time-frequency variation characteristics of transient signals is reflected by constructing the time-frequency matrix. Characteristics of time-frequency matrix is extracted by singular value decompositi...
