Energy Storage Technologies in Grid Modernization
by Sandeep Dhundhara, Yajvender Pal Verma, Ashwani Kumar
7Dual-Energy Storage System for Optimal Operation of Grid‑Connected Microgrid System
Deepak Kumar1* and Sandeep Dhundhara2
1Department of Electrical and Electronics Engineering, UIET, Panjab University, Chandigarh, India
2Department of Basic Engineering, COAE&T, CCS Haryana Agricultural University, Hisar, India
Abstract
The advances in renewable power generation technologies and modernization of power systems allow the growing proliferation of renewable energy resources (RERs) in the form of microgrid (MG). The integration of microgrids in the distribution system changes the passive distribution system into an active distribution system. The uncertainty in power generation from RERs is causing the major operational challenge to meet supply-load demand balance. Therefore, the electrical energy storage system (ESS) has become an important component of the microgrid system. The energy storage operating time limits have a great impact on the operating cost as well as on the life cycle of the storage. In this research work, the dual energy storage system (DESS) including battery storage (BS) and pump hydro storage (PHS) has been investigated to understand the impact of the minimum operating time limit on the optimal operating cost. Three operating cases have been studied to obtain the optimal operating cost of microgrid system operating with single energy storage and with DESS for different operating time constraints. The optimal operating time increases the effective life cycle ...
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