基于S变换的电能质量扰动分析

Analysis of Power Quality Disturbances Based on S-Transform

针对电能质量扰动信号的特征,提出一种基于S变换模矩阵的信号检测与分类方法,并对电能质量扰动信号进行分类.对电能质量扰动信号的电压凹陷、电压尖峰、暂态随机干扰等现象应用S变换分析,构造等值时频图,从而清晰直观地显现出电压干扰.

According to the main features of power quality disturbance signals ,one detection and classification method of voltage signal based on S transform module matrix was proposed, and the power quality with disturbance signals were classified. The S-transform was applied to analyze the power quality disturbance signals such as the voltage sag, voltage spike, transient random disturbance and the timefrequency contour maps constructed can display different voltage disturbances intuitively.