Simulation of Phasor Measurement Unit for Research and Teaching Applications

Abstract

The dynamic behavior of the modern power system requires accurate monitoring of certain important parameters such as bus voltage, frequency, phase angle, rate of change of frequency. With the advent of PMU, precise measurement of these parameters can be achieved. This paper is an attempt to develop a simple simulator to provide a basic idea about PMU working and algorithms involved in its phasor estimation. PMU simulator is being developed, and its performance under different test conditions is observed. This paper discusses the basic design and algorithm used in phasor measurement unit (PMU). Estimation of the rate of change of frequency (ROCOF) is also made with precision. The average filter is implemented, and its effectiveness to die out the second harmonics is revealed introduced by the complex gains. It is expected that the work will be helpful for teaching the PMU concept at advance level as well as initiating the researches in this area.