摘要
针对电能质量扰动检测的问题,结合经验模态分解(EMD)理论和总体平均经验模态分解(EEMD)算法以及Teager能量算子(TEO),提出基于EEMD和Teager能量算子的电能质量扰动检测方法。利用经验模态分解方法,将电力系统监测信号分解成不同特征时间尺度的单分量固有模态函数(IMF),用Teager能量算子计算各固有模态函数的瞬时幅值和频率,得到扰动信号的幅值谱。该方法充分利用了EEMD的自适应性与Teager算子的快速响应能力,仿真试验结果验证了该方法的有效性。
To detect power quality disturbances, empirical mode decomposition （EMD） theory, ensemble empirical mode decomposition （EEMD） algorithm and the Teager energy operator （TEO） are combined to conduct the method, that is based on EEMD anti Teager energy operator, to detect power quality disturbances, in which the power system monitoring signal ean be decomposed firstly into different single components of intrinsie mode functions （IMF） with different characteristic time seale by using empirical mode decomposition method, and then tile instantaneous amplitudes and instantaneous frequeneies of the intrinsic mode fimetions can be obtained by using Teager energy operator, and the amplitude spectrum of the signal can be given. The method takes full advantage of the rapid response capability of adaptive EEMD and Teager operator, and its validity was verified by the sinmlation resuhs.
出处
《中国电力》
CSCD
北大核心
2014年第5期35-38,共4页
Electric Power
基金
国家自然科学基金资助项目(51169007)
云南省科技计划项目(2012CA022)
云南省中青年学术和技术带头人后备人才培养计划项目(2011CI017)~~
关键词
电能质量
扰动检测
TEAGER能量算子
power quality
disturbance detection
ensemble empirical mode decomposition （EEMD）
Teager energy operator
