Assessing the Impact of Renewable Energy Integration in Tamil Nadu Grid

India has planned to add significant capacity in renewable space and this would be largely added in wind and solar rich states. Amongst all the states, Tamil Nadu (TN) is expected to have highest renewable capacity by 2022. This paper aims at assessing the operating philosophy of the TN state grid in 2022 due to planned renewable energy (RE) integration. The load-generation balance of TN power system has been analyzed for various operating scenarios. A reserve margin of about 15% on the net load basis (difference between actual demand and potential RE generation) is expected to be maintained to accommodate solar, wind and load variations. The study explores options to compute the curtailment of combined RE resources and suggest operating practices that TN can adopt to maximize RE generation.