1. Key Lab of Measurement Technology and Instrumentation of Hebei Province, Yanshan University, Qinhuangdao, Hebei 066004, China
2. Automation Institute of Hebei, Shijiazhuang, Hebei 050081, China
Abstract：EEMD,LMD,ITD are new time-frequency decomposition methods appear after EMD,which can apply to diagnose complex fault signal. The algorithm、characteristics and procedure of each methods are introduced firstly, then obtain the best suitable decomposition method to every power quality disturbance through the analysis of experiment effects. EEMD is suitable for power amplitude disturbances such as swells, sags, outages decomposition. EEMD and ITD methods are all suitable for impulsive transients but ITD is more quickly and more accurate positioning. ITD is suitable for oscillatory transients. The decomposition effect of voltage flicker using EEMD is better than others and ITD is suitable for the harmonic disturbance decomposition.
张立国,张淑清,李莎莎,乔永静,张航飞,李明星,贺朋. 电能质量扰动识别的不同时频分析方法研究[J]. 计量学报, 2017, 38(3): 345-350.
ZHANG Li-guo,ZHANG Shu-qing,LI Sha-sha,QIAO Yong-jing,ZHANG Hang-fei,LI Ming-xing,HE Peng. Study on the Detection and Classification of Power Quality Disturbances Using Difference Time-frequency Methods. Acta Metrologica Sinica, 2017, 38(3): 345-350.
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2017, Vol. 38 
