NDLI: Signal processing for TFR of synchro-phasor data

Content Provider	IET Digital Library
Author	Negi, Sanjay Singh Kishor, Nand Kumar, Avinash Uhlen, Kjetil
Abstract	With increased number of phasor measurement units (PMUs) deployment in the power system, there is growing interest in real-time event detection. The study in this paper presents post-processing approach to map the event occurrence for large sets of synchro-phasor data available from different regions/buses in the power network. The time–frequency representation (TFR) is applied to analyse the transients that contain rapid variations in amplitude or phase during the event occurrence against post-event conditions. This is based on reassigned smoothed-pseudo-Wigner–Ville distribution. The capability to correctly localise TF regions, where signals are locally coupled, is assessed on synthetic signal and PMUs signals. Important information such as time marginals is estimated to determine any event present in the analysed signal segment. Furthermore, the event localisation is enhanced applying Hough transform on TFR with calculation of group delay and reassignment vector. The developed procedure gives reasonable results for highlighting the distinct representation of events in study. The proposed approach can be easily implemented in real-time monitoring for event detection in the power system.
Starting Page	3881
Ending Page	3891
Page Count	11
ISSN	17518687
Volume Number	11
e-ISSN	17518695
Issue Number	Issue 16, Nov (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/11/16
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2015.1566
Journal	IET Generation, Transmission & Distribution
Publisher Date	2016-12-21
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Event Localisation Group Delay Hough Transform Phasor Measurement Phasor Measurement Unit Power Network Power System Power System Measurement And Metering Real-time Monitoring Reassignment Vector Signal Processing Signal Processing And Detection Signal Segment Smoothed-pseudo-Wigner–Ville Distribution Synchro-phasor Data TFR Time–frequency Representation
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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