Interharmonic Analysis Using MDL and TLS-ESPRIT

Abstract:

Estimation of Signal Parameters via Rotational Invariance Techniques (ESPRIT) is applied to analyze the interharmonics in Electric Power System (EPS). First, the signal received by one A/D convertor forms a signal vector through time shift; second, the number of sinusoidal components which compose the analyzed signal is estimated by calculating Minimum Descriptive Length (MDL), and then ESPRIT utilizes the rotational invariance of two sampling linear arrays to obtain frequency information by Total Least Squares (TLS) algorithm; and finally the rest amplitudes and phase angles are estimated by a simplified Support Vector Regression Machine (SVRM). TLS-ESPRIT aided by MDL as a super-resolution algorithm can overcome resolution limit and achieve better results compared with FFT and PRONY algorithms. Computer simulations prove that the proposed method is feasible and applicable.

• Periodical: Advanced Materials Research (Volumes 614-615)
• Pages: 1433-1437
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.614-615.1433
• Online since: December 2012
• Authors: Pei Sheng Gao, Guo Ying Fan, Lei Guo, Chun Hua Wang
• Keywords: ESPRIT, Interharmonic, MDL, SVRM, TLS

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