摘要
文中针对小波变换模极大值检测原理及其在电压暂降、骤升扰动信号检测中的应用进行了详细研究。介绍了小波变换理论,提出了采用小波多分辨率信号分解的电能质量暂态干扰检测新方法,通过检测小波变换模极大值,实现了对电压暂降扰动发生、恢复时间的精确定位。仿真计算结果表明该检测方法是有效的。
This paper studied the wavelet transform modulus maxima detection principle and its application in voltage sag,soared disturbance signal detection in detail.It introduced the wavelet transform theory,put forward the new method of power quality transient disturbance detection using wavelet multiresolution signal decomposition.By detecting the wavelet transform modulus maxima,the precise positioning of voltage sag disturbances occurrence and recovery time was achieved.The simulation results demonstrate that the detection method is effective.
出处
《河北工程技术高等专科学校学报》
2011年第1期40-43,共4页
Journal of Hebei Engineering and Technical College Quarterly
关键词
电能质量扰动
小波变换
多尺度分析
power quality disturbances
wavelet transform
multi-scale analysis
