基于希尔伯特-黄变换的复杂电能质量信号检测技术  

Signal Detection Technology of Complexity Power Quality Based on HHT

作　　者：胡晓曦[1] 刘含露 熊婷婷[1] 胡京莹[1] 

机构地区：[1]长沙理工大学电气与信息工程学院,长沙410114 [2]湖北咸宁市供电公司,湖北咸宁437100

出　　处：《电气技术》2012年第5期6-10,共5页Electrical Engineering

摘　　要：电力系统中大量非线性负荷的使用导致了电能质量信号的非平稳性和复杂性。针对复杂电能质量信号的检测问题,文中采用Hilbert-Huang变换(HHT)对复杂电能质量信号进行分析。介绍了HHT的基本原理;提出了实现复杂电能质量信号检测的HHT方法;分析了HHT在复杂电能质量信号检测中的优越性。仿真试验表明该方法可以实时精确的检测扰动起止时刻和扰动幅度,适用于电能质量多扰动的检测和辨识系统。Lots of nonlinear loads using in power system led to the non-stationary and complexity of power quality signals. For the complex power quality signal detection problem, this article uses the Hilbert-Huang transform （HHT） for analysis of the principle of HHT; put forward the HHT method to complex power quality signal. Introduced the basic realize the detection of the complex power quality signal; analysed of the superiority of HHT in the detection of the complex power quality signal. The simulation results show that this method can be a real-time accurate detection of perturbation starting and ending time and perturbation amplitude, and applicable to the detection and identification system of the multi-disturbances power quality.

关 键 词：电能质量 HILBERT-HUANG变换 多扰动信号 谐波 电压暂降 电压中断 

分 类 号：TM711[电气工程—电力系统及自动化]