【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。更多还原

【Abstract】 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.更多还原