基于Teager能量算子的电能质量扰动实时检测方法

Real-Time Detection Power Quality of Disturbances Based on Teager Energy Operator

建立一个有效的电能质量监控系统的关键,首先在于实现对扰动的快速、准确检测。通过引入Teager能量算子(TEO),提出基于TEO的实时检测方法。由于Teager能量算子只需要对被测波形相邻的三个采样点进行两次乘法和一次加法运算,使得所提算法快速、简洁,具有优良的时间分辨率,能实时跟踪被测信号波形变化。仿真和实验结果表明,所提算法能够准确、迅速地检测和定位电能质量扰动的发生,具有优良的检测效果。

Real-time and accurate detection of power quality （PQ） disturbances is a key issue in power quality （PQ） monitoring systems. A novel detection algorithm based on Teager energy operator （TEO） is proposed in this paper. The proposed algorithm uses only three adjacent samples of the signal and requires only three arithmetic operations per each time shift; it has excellent time resolution and is robust in the presence of white noise. The proposed algorithm fits to real-time online disturbances detecting. And its efficiency is demonstrated by both simulation and exoerimental results.