Wide-area monitoring and anomaly analysis based on synchrophasor measurement

Abstract Power system is one of the most complex, large-scale dynamic systems in the world. Modern power grids usually ramify across a county and even a whole continent to convey electric power from generators to consumers. Consequently, a wide-area measurement network is the prerequisite of modern power grid monitoring and operation. In addition, due to the increasing deployment of intermittent renewable generators and other new power grid components, power grid dynamic characteristics become more and more complicated. Conventional monitoring technologies, such as those used in the existing supervisory control and data acquisition system that measures every 2–4 seconds without precise time synchronization, can only help operators understand the steady state situation of power grid. Comparatively, the synchrophasor technology-based wide-area monitoring measurement can monitor the power system dynamics in an unprecedented way. In this chapter, wide-area monitoring measurement and its various applications in modern power grids will be introduced.