中国电力 ›› 2014, Vol. 47 ›› Issue (5): 35-38.DOI: 10.11930/j.issn.1004-9649.2014.5.35.3

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基于EEMD和Teager能量算子的电能质量扰动检测

邓为权, 邹金慧, 范玉刚, 吴建德   

  1. 昆明理工大学 信息工程与自动化学院,云南 昆明 650500
  • 收稿日期:2014-02-12 出版日期:2014-05-31 发布日期:2015-12-21
  • 作者简介:邓为权(1988-),男,云南曲靖人,硕士研究生,从事电力系统故障检测、信号分析及其应用研究。E-mail: 258203875@qq.com
  • 基金资助:
    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)

Detection of Power Quality Disturbances Based on EEMD and Teager Energy Operator

DENG Wei-quan, ZOU Jin-hui, FAN Yu-gang, WU Jian-de   

  1. Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650500, China
  • Received:2014-02-12 Online:2014-05-31 Published:2015-12-21
  • Supported by:
    This work is supported by National Natural Science Foundation of China(51169007), Science &Research Program of Yunan Province (2012CA022), Reserve Personnel Training Plan Project of Young and Middle-aged Academic and Technical Leaders of Yunnan Province (2011CI017)

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。

关键词: 电能质量, 扰动检测, EEMD, Teager能量算子

Abstract: 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 and Teager energy operator, to detect power quality disturbances, in which the power system monitoring signal can be decomposed firstly into different single components of intrinsic mode functions (IMF) with different characteristic time scale by using empirical mode decomposition method, and then the instantaneous amplitudes and instantaneous frequencies of the intrinsic mode functions 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 simulation results.

Key words: power quality, disturbance detection, ensemble empirical mode decomposition (EEMD), Teager energy operator

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