Become the leading organization in the field of thermal energy storage research and development
Design and develop market ready thermal enegy storage based products and applications
Collaborate with national and international research instituions to develop new solutions based on TES
Make the centre financially sustainable by conducting externally funded research and development work
Human resource development through training and M.Tech, Ph.D. and post-doctoral research based work
Prof. Naqui Anwer Member, Department of Sustainable Engineering, TERI SAS
Mr. Shirish Garud Member, TERI
Dr Som Mondal Co-PI, Department of Energy and Environemnt, TERI University
Dr Aviruch Bhatia Member, Department of Sustainable Engineering, TERI SAS
The increasing adoption of variable renewable energy sources necessitates that conventional base load power plants, particularly coal-fired plants, adapt to more flexible and variable operational patterns. This flexible operation of thermal power plants has led to several negative consequences like deterioration in heat rate and higher APC at partial loads, increased thermal and mechanical stress, reduced plant life, and higher rates of forced outages. To address these challenges, NTPC is actively seeking solutions to mitigate the adverse effects of flexible operations in thermal power plants. One promising approach is the integration of thermal energy storage systems (TESS), which can store excess energy from the boiler by diverting steam through the storage system.
Brief About the Technology/Works being carried out
With the intention of mitigating the adverse impacts of flexibilization on thermal power plants and also to supply additional power over and above the unit capacity during peak demand hours, a pilot project of TESS integrated with Thermal power plant to supply additional power (15 MWe) has been planned by NTPC at its existing thermal power plant in Dadri.The process consists of two cycles. Charging Cycle and Discharging Cycle.
Charging Cycle: During periods of low demand from the thermal unit, boiler shall be maintained at or above technical minimum load while keeping the TG output as per the grid demand. The excess steam from the boiler shall be diverted to the TESS block, there by charging the storage unit.
Discharging Cycle: During peak demand periods, the TESS shall be operated in a separate power cycle with additional Turbine Generator set. The heat energy stored in the TESS shall be used for generating superheated steam and shall be fed to the TG set to generate power.
NTPC Bhawan, SCOPE Complex, 7, Institutional Area, Lodi Road,New Delhi-110003
Image: Yann Forget, Wikimedia Commons
The scope includes design, engineering, supply, construction, erection, testing and commissioning of the thermal energy storage system pilot plant of around 200 MWh (thermal) capacity integrated with the Steam and feed water cycle of the thermal power unit to generate additional net electrical power of 15 MW for four hours. Operations and maintenance (including spares and consumables) for three years is also included in the scope.
In a separate development, Solar Energy Corp. of India has invited bids to set up a 50 MWp solar PV plant backed with 50 MWh battery energy storage system at Taru, Leh, in the Indian union territory of Ladakh.
The scope includes design, engineering, supply, construction, erection, testing, commissioning and ten years of O&M of the PV plant with BESS.
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