GAMS-Based Harmonics Estimation Technique for Reliable Harmonics Analysis of Power Signals

Abstract

Recent advances in power electronic equipments and increased penetration of non-linear loads in modern power systems have presented numerous challenges, requiring immediate and effective solutions to enhance the reliability and quality of power supply. Accurate estimation of harmonics is crucial in mitigating the detrimental effects of non-linear loads. Currently, expensive power quality analyzers are employed to analyze and estimate harmonics present in electrical systems. In this research work, a novel General Algebraic Modeling System (GAMS) based harmonics estimation technique is proposed that can effectively estimate the harmonics present in electrical signals without the need of expensive power quality analyzers. The effectiveness of the proposed technique is demonstrated by estimating the harmonics present in real-time electrical signals obtained from an Axial Flux Permanent Magnet Generator (AFPMG), Unin-terruptible Power Supply (UPS) and non-linear current drawn by Light Emitting Diodes (LEDs). Several test cases are also validated considering the harmonics present in power electronics based industrial load and in VFD waveform. Results indicate the effectiveness of the proposed technique compared to that in the literature.