Definition: Phasor Measurement Unit (PMU)

Jump to: navigation, search

Phasor Measurement Unit (PMU)

Calculates voltage and current phasors based on digital sampling of alternating current (AC) waveforms and a precise time signal provided by a GPS clock. A PMU provides output data in a standard protocol at rates of at least 30 samples per second for communication to remote locations. Since voltage and current measurements are time-stamped, synchrophasor data collected across the country can be time synchronized conditions at distant locations can be accurately compared. Digital Fault Recorders, digital relays, and other devices that have PMU capability can also be considered PMUs.[1]

Related Terms
sustainabilitysmart grid

[[Category: Smart Grid Definitions|Template:BASEPAGENAME]]