The Open Electrical & Electronic Engineering Journal

2015, 9 : 566-570
Published online 2015 November 11. DOI: 10.2174/1874129001509010566
Publisher ID: TOEEJ-9-566

Sparse Representation Based Dielectric Loss Angle Measurement

Zhang Ji and Jianfeng Zheng
School of Information Science and Engineering, Changzhou University, Changzhou, Jiangsu, 213164, P.R. China.

ABSTRACT

Precise measurement of dielectric loss angle is very important for electric capacity equipment in recent power systems. When signal-to-noise is low and fundamental frequency is fluctuating, aiming at the measuring error of dielectric loss angle based on some recent Fourier transform and wavelet transform harmonics analysis method, we propose a novel algorithm based on sparse representation, and improved it to be more flexible for signal sampling. Comparison experiments describe the advantages of our method.

Keywords:

Dielectric loss angle measurement, sparse representation, wavelet transform.