Design and implementation of a phasor measurement unit using a new measurement technique

Abstract

Abstract Power system dynamics are being significantly impacted by the widespread use of renewable energy sources, and modern electrical networks are growing increasingly complex. This trend highlights the need for new monitoring technologies to ensure the continuous operation and operational efficacy of the electrical network. Similar to Phasor Measurement Units (PMUs), a synchronized monitoring system provides a solid basis for the intricate power system and can be a helpful tool in challenging situations. This paper presents the design and realization of a (PMU) based on a new measuring technique pivoted on Sliding Fourier Transform Phase-locked loop (SFT-PLL). This technique enhances the accuracy and dynamic performance of phasor estimation in modern power systems. The PMU prototype was first validated through simulation and then implemented as a hardware prototype. the complete hardware architecture of the PMU has been realized using analog signal conditioning circuits, a high-resolution analog-to-digital conversion stage, a real-time processing platform based on Texas Instruments Delfino F28379D board, and Global Positioning System (GPS) Module. Experimental results demonstrate that the proposed PMU achieves higher accuracy in calculating magnitude, phase angle, and frequency, while maintaining fast dynamic response during severe grid disturbances. These outcomes confirm that the new measurement technique significantly improves phasor estimation performance and enhances the reliability of real-time monitoring in modern power systems.