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The Paradigm Shift in Power System Operation with High Penetration of Renewables in Southern Region of India

Indian grid is one of the largest synchronous grids in the world, and India is one of the leading countries in Renewable Energy (RE) generation capacity. In line with India's commitment to a greener planet, RE capacity installations have seen unprecedented growth in the last decade. RE brings new challenges to power system operation like steep ramping requirements, eclipses, other weather Events, reactive power issues, and inertia. Several measures have been brought into the Indian power system to facilitate smooth integration of RE, thus contributing to the global cause. This paper exhaustively discusses the new practices adopted by the system operator and initiatives that the central electricity regulator brought in for effective and efficient RE integration. Viz., Load shifting, changes in thermal generation minimum operational level, mandatory ramping requirements from thermal generators, Reserve Shut Down of thermal generators, PLF of conventional generation, reactive power management, and switching operations in RE associated transmission system.