A Novel Hybrid GWO-LS Estimator for Harmonic Estimation Problem in Time Varying Noisy Environment

Muhammad Abdullah, Tahir N. Malik, Ali Ahmed, Muhammad F. Nadeem, Irfan A. Khan and Rui Bo
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Muhammad Abdullah: Department of Electrical Engineering, University of Engineering and Technology Taxila, Taxila 47080, Pakistan
Tahir N. Malik: Department of Electrical Engineering, HITEC University Taxila, Taxila 47080, Pakistan
Ali Ahmed: Department of Electrical Engineering, University of Engineering and Technology Taxila, Taxila 47080, Pakistan
Muhammad F. Nadeem: Department of Electrical Engineering, University of Engineering and Technology Taxila, Taxila 47080, Pakistan
Irfan A. Khan: Clean and Resilient Energy Systems (CARES) Research Lab., Texas A&M University, College Station, TX 77553, USA
Rui Bo: Department of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USA

Energies, 2021, vol. 14, issue 9, 1-26

Abstract: The power quality of the Electrical Power System (EPS) is greatly affected by electrical harmonics. Hence, accurate and proper estimation of electrical harmonics is essential to design appropriate filters for mitigation of harmonics and their associated effects on the power quality of EPS. This paper presents a novel statistical (Least Square) and meta-heuristic (Grey wolf optimizer) based hybrid technique for accurate detection and estimation of electrical harmonics with minimum computational time. The non-linear part (phase and frequency) of harmonics is estimated using GWO, while the linear part (amplitude) is estimated using the LS method. Furthermore, harmonics having transients are also estimated using proposed harmonic estimators. The effectiveness of the proposed harmonic estimator is evaluated using various case studies. Comparing the proposed approach with other harmonic estimation techniques demonstrates that it has a minimum mean square error with less complexity and better computational efficiency.

Keywords: grey wolf optimizer; electrical harmonics; harmonic estimation; total harmonic distortion (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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