NDLI: Frequency mode identification using modified masking signal-based empirical mode decomposition

Content Provider	IET Digital Library
Author	Ray, Papia Lenka, Rajesh Kumar Biswal, Monalisa
Abstract	A modified masking empirical mode decomposition (EMD) for effectively improving the mode separation capability of standard EMD while analysing power system signals with closely spaced modes of frequency is proposed here. A multi-frequency test signal resembling the dynamic power system signal and the actual data recorded by wide area measurement systems (WAMS) from Northern Grid, India, on 1 June 2010 due to generation loss are analysed by both the existing method and the proposed method. Various components of modal frequency extracted by masking signal base EMD are compared with extracted components by the proposed modified masking EMD. Further, the time–frequency representation of extracted modes by Hilbert spectral analysis is implemented to know mode behaviour with time reference. Simulation results prove that the EMD with proposed modification is capable of separating various modes of frequencies present in the WAMS signal.
Starting Page	1266
Ending Page	1276
Page Count	11
ISSN	17518687
Volume Number	13
e-ISSN	17518695
Issue Number	Issue 8, Apr (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/13/8
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2018.5527
Journal	IET Generation, Transmission & Distribution
Publisher Date	2019-01-29
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Analysing Power System Signal Dynamic Power System Signal Extracted Mode Frequency Mode Identification Hilbert Transform Mathematical Analysis Modal Frequency Mode Separation Capability Modified Masking EMD Modified Masking Empirical Mode Decomposition Modified Masking Signal-based Empirical Mode Decomposition Multifrequency Test Signal Power System Measurement Power System Measurement And Metering Signal Base EMD Signal Processing Signal Processing And Detection Spectral Analysis Standard EMD Statistics Time-frequency Analysis Time–frequency Representation WAMS Signal Wide Area Measurement System
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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