电能质量扰动识别的不同时频分析方法研究

doi:10.3969/j.issn.1000-1158.2017.03.21

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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.

Key words： metrology power quality disturbance EEMD LMD ITD

Received: 06 October 2015 Published: 19 April 2017

PACS:

TB971

Fund:Research on GPS information ontology interoperability Methods;Research on GPS information ontology interoperability Methods

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	Articles by authors
	ZHANG Li-guo
	ZHANG Shu-qing
	LI Sha-sha
	QIAO Yong-jing
	ZHANG Hang-fei
	LI Ming-xing
	HE Peng

Cite this article:

ZHANG Li-guo,ZHANG Shu-qing,LI Sha-sha, et al. Study on the Detection and Classification of Power Quality Disturbances Using Difference Time-frequency Methods[J]. Acta Metrologica Sinica, 2017, 38(3): 345-350.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2017.03.21 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2017/V38/I3/345

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