The Open Automation and Control Systems Journal

2014, 6 : 1045-1057
Published online 2014 December 31. DOI: 10.2174/1874444301406011045
Publisher ID: TOAUTOCJ-6-1045

Vibration Signal Analysis of High Voltage Circuit Breakers System Based on Hybrid Model of Power Spectrum Estimation

Fu Chao
Hebei Normal University. Shi Jiazhuang, 050024, China, Province-Ministry Joint Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability, Hebei University of Technology, Tianjin, 300130, China.

ABSTRACT

This paper discusses several methods of power spectrum estimation, respectively using the indirect method and Welch method to estimate power spectrum distribution through the acquisition of vibration signals of circuit breakers, and use the AR hybrid model to estimate different orders of power spectrum estimation. Under different length of data, the order selection method can be determined.

Keywords:

Spectrum estimation, vibration signal, AR model.