Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
387768 | Expert Systems with Applications | 2008 | 7 Pages |
Abstract
In this paper, wavelet packet energy entropy and weighted support vector machines are used to automatically detect and classify power quality (PQ) disturbances. Electric power quality is an aspect of power engineering that has been with us since the inception of power systems. The types of concerned disturbances include voltage sags, swells, interruptions. Wavelet packet are utilized to denoise the digital signals, to decompose the signals and then to obtain five common features for the sampling PQ disturbance signals. A weighted support vector machine is designed and trained by 5-dimension feature space points for making a decision regarding the type of the disturbance. Simulation cases illustrate the effectiveness.
Related Topics
Physical Sciences and Engineering
Computer Science
Artificial Intelligence
Authors
Guo-Sheng Hu, Feng-Feng Zhu, Zhen Ren,