基于S变换时频等值线图与幅值包络线的短时电能质量扰动检测与分类  

Detection and classification of short duration power quality disturbances based on time-frequency contour and amplitude envelope of S transform

作　　者：刘守亮[1] 肖先勇[1] 杨洪耕[1] 

机构地区：[1]四川大学电气信息学院,四川成都610065

出　　处：《继电器》2005年第22期49-52,共4页Relay

摘　　要：提出了利用S变换时频等值线图和幅值包络线对常见短时电能质量扰动进行检测和分类的方法。介绍了S变换的基本原理,给出了利用S变换检测和分类短时电能质量扰动的实现方法,通过仿真验证方法的有效性。结果表明,该方法可以准确地确定扰动发生时刻和持续时间,并能简单、直观地对扰动进行分类和幅度确定。This paper proposes a method, which is known as S-transform, by using its time-frequency contour and amplitude envelope to detect and classify STPQD （ Short Duration Power Quality Disturbances）. The principle of S-transform is introduced. The method used in this paper is described and its effectiveness is validated using some simulated examples. The results show that this method can localize the disturbances precisely and classify them simply and distinctly.

关 键 词：S变换 短时电能质量扰动 检测 分类 

分 类 号：TM711[电气工程—电力系统及自动化]