Phasor Measurement Unit

A Phasor Measurement Unit (PMU) is a device used in electrical power systems to accurately measure and record the voltage and current waveforms’s timing and phase. It captures these signals at very high speed, providing real-time, synchronized data across the grid using GPS signals. This information helps utilities monitor, analyze, and respond to power flows and disturbances quickly, ensuring stability and reliability in the electrical system. Essentially, PMUs act as advanced sensors that help keep the electricity grid safe and efficient by providing precise, synchronized measurements of the power system’s dynamic behavior.