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A Change-Point Detection Approach to Power Quality Monitoring in Smart Grids

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4 Author(s)
Xingze He ; Mitsubishi Electr. Res. Labs. (MERL), Cambridge, MA, USA ; Man-On Pun ; C. -C. Jay Kuo ; Ye Zhao

In this work, we apply a change-point detection approach to power quality (PQ) monitoring in smart grids. Capitalizing on change-point detection theory with unknown parameters, a sequential cumulative sum (CUSUM)-based scheme is developed with an objective to provide quick and accurate detection of PQ event occurrence in real time. The proposed CUSUM-based scheme evaluates the weighted likelihood ratios by exploiting both the instantaneous and the long-term information of the power waveform. It is shown by computer simulations that the proposed CUSUM-based scheme can achieve a significant performance gain over conventional detection schemes.

Published in:

2010 IEEE International Conference on Communications Workshops

Date of Conference:

23-27 May 2010