WIDE AREA MONITORING SYSTEM

Abstract

Power systems are operating in a more complicated and therefore encounter more challenges. If one part of a power grid becomes seriously out of synchronism with the rest, the whole network can become unstable and blackout may occur. In this regard, we need to use advanced and smart monitoring tools to quickly and reliably observe the changing state of the key electrical parameters in real time, take appropriate corrective measures and isolate faults.These technologies should integrates the functions of monitoring, protection and control in the power systemsystem.Phasor Measurement Units (PMUs) by employing satellite technology (GPS) , offer a state-of-the-art Wide Area Monitoring System (WAMS) for improving power system monitoring, control and protection. In this report, we present information about WAMS components and requirements for transmission.We will discuss the concept of PMU placement, PMU simulink model, its application as fault locator and how it can be used to identify a power swing. The simulation results show that with the use of PMU we can immediately locate the position of fault and identify a power swing as stable and hence can help in sending a blocking signal to the relay to prevent its maloperation. The simulations have been carried out in PSCAD v4.5 software and the calculations and plots have been obtained by making use of MATLAB 2014a software