Techno-commercial analysis of storage in a utility scale hybrid power plant: solar (120 mw) + wind (40 mw)
Student name: Ms Shivali Dwivedi
Guide: Dr Jami Hossain
Year of completion: 2018
Host Organisation: ICF Consulting India Pvt Ltd
Supervisor (Host Organisation): Mr Pramod Singh
Abstract: There is an upcoming renewable hybrid power plant in Andhra Pradesh (120 MW AC Solar+40 MW Wind) along with a storage. The storage component of the project is supported by a grant from World Bank. As a part of this project, various applications of Battery Energy Storage were studied to shortlist the battery application most suitable for the project. The end use finalised for the project is Capacity Firming with applications of Ramp Rate Control, Deviation Settlement Mechanism and Flat Power output. Post this step; analyses of various chemistries/technologies were done to study the most feasible storage type for the project, which was found to be Li-Ion batteries. The selection of the chemistry was based on comparison of the service requirements of a specific application with performance characteristics of a battery. This comparison was carried out using ES-Select software of US-DOE. A formulated excel based model helped in analysing the benefits of different sizes of battery corresponding to the generation pattern of Solar and Wind Energy of the project site. Commercial aspect was later introduced in the model to examine the financial feasibility of different battery sizes.
This report gives away recommendations for different sizes of battery-with their respective technical and commercial feasibility. However, the final decision of the battery size to be installed is a discretion of the funding agency. In addition, since the excel model formulated by the author for analysing different battery sizes has certain limitations, therefore giving a final battery size will not be feasible.
Keywords: Battery Energy Storage System (BESS), Li-Ion Battery, ES- Select, Battery end-uses, Vanadium Redox.
