The Open Electrical & Electronic Engineering Journal

2015, 9 : 518-523
Published online 2015 October 28. DOI: 10.2174/1874129001509010518
Publisher ID: TOEEJ-9-518

Harmonic Frequency Estimation Algorithm based on ESPRIT and MSWF in Power System

Sun Xiangwen , Cao Zhe and Tian Wei
School of Electrical Engineering, Henan University of Science and Technology, Luoyang, 471023, P.R. China.

ABSTRACT

This paper points out the deficiency in the current harmonic frequency estimation algorithm in power system. In order to improve the accuracy of detection and reduce the computational complexity, the study combined the ESPRIT algorithm with multistage Wiener filter (MSWF) recurrence to achieve fast estimation of harmonic frequency. Theoretical analysis and simulation experiment show that the algorithm had relatively low requirement for the amount of data, and demonstrated good frequency resolution characteristics and anti-jamming capability, which made it ideally suitable for harmonic analysis in power system.

Keywords:

ESPRIT, harmonic frequency estimation, MSWF.