Smart Power Grid Synchronization Using Extended Kalman Filtering: Theory and Implementation with CompactRIO

Abstract

The extended Kalman filtering is developed for smart power grid synchronization by transforming three-phase voltage from abc coordinate frame to alpha-beta stationary coordinate frame in order to separate the positive, negative and zero sequences. The proposed grid synchronization approach is then implemented with a high-performance real-time FPGA-based embedded system, NI CompactRIO platform, with direct connection to the three-phase utility power grid. The hardware implementation provides a solid demonstration of the practicability and feasibility of proposed method for smart grid synchronization applications.