Journal of Harmonized Research in Engineering

A COMPREHENSIVE REVIEW OF PHASOR MEASUREMENT UNITS FOR WIDE AREA MEASUREMENT SYSTEMS

Abstract

Author(s): Priyank Tiwari, Prabodh Khampariya

Power system operation has become increasingly complex due to high load growth and increasing market pressure. The occurrence of major blackouts in many power systems around th e world has necessitated the use of synchrophasor based Wide Area Measurement Systems (WAMS) for grid monitoring. Synchrophasor technology is comparatively new in the area of power systems. Phasor measurement units (PMUs) and phasor data concentrators (PDCs) are new to the substations and control centers. Even though PMUs have been installed in many power grids, the number of installed PMUs is still low with respect to the number of buses or lines. Currently, WAMS systems face many challenges. The amount of data collected by PMUs is large and they need to be transferred to regional and global data centers where real-time state estimation, and protection, stabilization decisions are made out of two different signal selection method. Key Words: Inter-area oscillations, power system stabilizer (PSS), Phasor Measurement Unit (PMU), Wide Area Measurement Systems (WAMS)