Date of Award


Document Type

Open Access Master's Thesis

Degree Name

Master of Science in Electrical and Computer Engineering (MS)

Administrative Home Department

Department of Electrical and Computer Engineering

Advisor 1

Flavio Bezerra Costa

Committee Member 1

Bruce Mork

Committee Member 2

Chee-Wooi Ten


Addressing the evolving challenges in modern power systems induced by the integration of Inverter Based Resources (IBRs), such as solar inverters, wind turbine converters, electric vehicle charging stations etc is the main goal of this research. The study focuses on the critical task of harmonic phasor estimation in the presence of sub-harmonics, inter-harmonics, time-varying harmonics, DC offset, transient events, and other power quality disturbances. A novel wavelet-based harmonic phasor estimation method is proposed to enhance accuracy, particularly during transient events, ensuring a nuanced understanding of phase angle variations. The research emphasizes the versatility of wavelet analysis for both steady-state and transient conditions, demonstrating its applicability in diverse operational scenarios. The proposed method's implementation and assessment in a laboratory environment, utilizing real-world data sets with harmonics, inter-harmonics, DC offset, and transient scenarios, showcase its efficacy and potential to revolutionize power system monitoring methodologies. The research contributes significantly to advancing harmonic phasor estimation techniques and establishes wavelet analysis as a cornerstone in sophisticated power system monitoring.

Available for download on Wednesday, December 04, 2024