Principle and implementation of vector-based phasor measurement unit algorithm using delay devices

This paper proposes a novel Phasor Measurement Unit (PMU) algorithm for P and M class measurement using vector-based operation with originally designed pseudo-IQ signal translation using a delay device. A PMU is an essential equipment in the smart grid. However some technical difficulties with frequency measurement are still discussed. The presented algorithm in this paper aims to be a compact algorithm with implementations for breakthrough by 1) directly measuring the nominal frequency by using an F0 measurement method, 2) using vector product operation to calculate the phasor, and 3) not using DFT or the quadrature heterodyne method due to the difficult filter design requirements This paper also reports on the evaluation result based on IEEE Std C37.118.1, and the presented algorithm shows excellent frequency measurement, dynamic response, stability, and preciseness.