摘要
针对电能质量扰动信号的特征,介绍了一种基于S变换的信号检测与分类的方法。该方法利用S变换模矩阵来检测电能质量扰动信号,并对其进行分类。对影响电能质量的8种扰动信号(电压凹陷、电压隆起、短时中断、电压尖峰、电压缺口、谐波、间谐波和瞬态振荡)进行了仿真。仿真结果表明,该方法可以准确地确定扰动发生时刻和持续时间,能够对电能质量扰动信号进行简单、直观地分类。
According to the signal characteristics of power quality disturbances, a detection and classification method based on S-Transform is proposed. The S-transform module matrix is used to detect and classify power quality disturbance signal. Eight disturbance signals （voltage sag, voltage swell, momentary interruption, voltage spike, voltage notch, harmonic, inter-harmonic and oscillatory transients） which influence power quality have been simulated. The results show that the method can be used to localize the disturbance time and duration precisely and classify them simply.
出处
《电测与仪表》
北大核心
2009年第6期51-55,62,共6页
Electrical Measurement & Instrumentation
基金
国家自然科学基金资助项目(10704060A040505)
关键词
电能质量扰动
S变换
S变换模矩阵
短时傅里叶变换
power quality disturbance, S-transform, S-transform module matrix,short-time Fourier transform
