Application of Synchrophasors - A Case Study in Northern Regional Power System in India

The deployment of synchrophasor technology in India as a part of the pilot project has significantly improved the visibility of the system dynamics in real-time. The synchrophasor data has also been found to be of great help in off-line analysis of grid events. The grid disturbance in India in July 2012 has increased the need for exploring the possible applications of synchrophasor data in monitoring and analysis of the system dynamics and taking suitable actions to maintain the stability of the system. This paper presents one such application wherein the oscillations captured by the synchrophasors in the Northern Regional Grid were analysed using a signal analysis tool developed in MATLAB R . The analysis reveals the various modes of oscillation observed in the Indian Power System during a few grid events. The paper also suggests the effective utilization of Power System Stabilizers and Power Oscillation Dampers installed in the grid for damping of oscillations and enhancement of dynamic security.