A new framework of PMU based on FPGA

Abstract

The approach that has been developed in this research work is to generate a configurable input signal, sample it and use the different estimation techniques such as non-recursive, recursive and smart DFT to estimate the phasors. These estimated values would be incorrect if the input signals are at an off-nominal frequency and the phase angles would drift away from the true values. To correct this issue, first, the off-nominal frequency has been estimated using Phasor measurement angle changing technique. Then, it has been used to correct the phasors. Finally, the developed PMU model has been verified and tested with a Grid connected PV system. Smart grid is a modernized electrical supply network in which information is communicated bi-directionally using digital communication technology. SYNCHRONIZED phasor measurement units (PMUs) were first introduced in early 1980s, and since then have become a mature technology with many applications, monitoring, control and protection of the power system networks in real time, which are currently under development around the world. PMUs are able to provide time stamped synchronized measurements of voltage and current phasors using Global Positioning System (GPS) satellites, in microseconds, to maintain the power system network free of faults and hence healthy