Engineering and Applied Sciences Journal

A Mathematical Physics-Based Framework for Predicting Energy Savings in Harmonic-Rich Low-Voltage Grids Using the Wafeer System

Abstract

Hazar Shtat

This paper presents a unified mathematical physics, based framework for evaluating and predicting the energy-saving performance of the Wafeer system in nonlinear low-voltage electrical grids. The proposed methodology integrates utilitymeter measurements with analytical conductor-loss models to establish a practical engineering approach for quantifying energy savings and explaining their physical origin. A predictive model is also introduced to estimate the expected saving before installation using measurable indicators obtained from power-quality assessments. The framework is supported by documented field measurements from large-scale installations, including the riyadh boulevard and adeer giant screen projects. The analysis demonstrates that the achievable energy saving depends strongly on grid condition, with greater benefits obtained in harmonicrich installations characterized by elevated neutral-current circulation and degraded power quality. The proposed methodology provides engineers with a practical tool for feasibility assessment, performance prediction, and interpretation of measured energy savings while maintaining consistency with established electrical-loss mechanisms.

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