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.
M. Abdullah et al., "A Novel Hybrid GWO-LS Estimator for Harmonic Estimation Problem in Time Varying Noisy Environment," Energies, vol. 14, no. 9, article no. 2587, MDPI, May 2021.
The definitive version is available at https://doi.org/10.3390/en14092587
Electrical and Computer Engineering
Keywords and Phrases
Electrical Harmonics; Grey Wolf Optimizer; Harmonic Estimation; Total Harmonic Distortion
International Standard Serial Number (ISSN)
Article - Journal
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01 May 2021