Indian electric power grid has evolved from small isolated systems in the past to two large synchronous interconnections. Shortly these two systems will also be synchronised forming a single synchronously connected grid with installed capacity of 223 GW. The size and complexity of Indian power system is increasing rapidly due to factors like demand growth, increasing system size, long distance power haulage and integration of renewable energy sources etc. With the increasing competition in Electricity market and large seasonal load variations, the grid is expected to operate closer to their limits and in such a scenario, system operators need dynamic visibility of the grid. SCADA system is capable to provide mainly the steady state visibility while the synchrophasors have the potential to provide the dynamic state visibility and thus fulfill the monitoring requirements of a modern grid.
The regional grids in India started adopting synchrophasors technology in the year 2010 with the implementation of a pilot project in northern region. Subsequently, other regional projects were also taken up and together all were integrated in a national level project. Since then, Power System Operation Corporation Ltd. (POSOCO) is utilizing synchrophasors data in many innovative ways.
This paper presents the experiences of synchrophasors initiative in India in utilizing synchrophasor data in improving the performance of grid, event analysis, root cause analysis and real time fault analysis etc.
Phasor Measurement Unit, Synchrophasors, WAMS, Power grid, Dynamic visibility, SCADA
