DocumentCode :
775864
Title :
Power quality indices for transient disturbances
Author :
Shin, Yong-June ; Powers, Edward J. ; Grady, Mack ; Arapostathis, Ari
Author_Institution :
Dept. of Electr. Eng., Univ. of South Carolina, Columbia, SC, USA
Volume :
21
Issue :
1
fYear :
2006
Firstpage :
253
Lastpage :
261
Abstract :
For reasonable power quality assessment of transient disturbances in electric power systems, new transient power quality indices are developed based on a signal processing technique, time-frequency analysis. Based on the time-frequency distribution of a transient disturbance, a set of time-frequency based power quality indices are developed. In this paper, the instantaneous disturbance energy ratio, normalized instantaneous disturbance energy ratio, instantaneous frequency, and instantaneous K-factor are suggested for transient power quality assessment. Time-frequency based power quality indices allow one to quantify the effects of transient disturbances with high-resolution and accuracy.
Keywords :
power supply quality; power system faults; power system transients; signal processing; time-frequency analysis; K-factor; electric power system transient disturbances; signal processing technique; time-frequency based power quality indices; Degradation; Electromagnetic transients; Fourier transforms; Power quality; Power system harmonics; Power system transients; Quality of service; Signal processing; Time frequency analysis; Transient analysis; Instantaneous disturbance energy ratio; instantaneous K-factor; instantaneous frequency; normalized instantaneous disturbance energy ratio; power quality; power quality index; time-frequency analysis; transient disturbance;
fLanguage :
English
Journal_Title :
Power Delivery, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8977
Type :
jour
DOI :
10.1109/TPWRD.2005.855444
Filename :
1564207
Link To Document :
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