Energy Storage for Smart Grid Applications

Abstract: (Sponsored by PELS TC 12) Significant growth of renewable energy sources such as wind and solar over the past few years has created major challenges for grid operators and has impacted its stability and power quality. Thess challenges have created an urgent need for flexible resources which could include behind-the-meter energy storage assets. These assets enable utility customers to respond to price signals, whether peak-demand charges, time-of-use electricity rates, real-time pricing, or demand response signals. Energy storage systems (ESS) with Lithium-ion (Li-ion) batteries are growing significantly in smart grid and electric mobility applications due to its high-energy density, high power, and long cycle life. Further growth will depend on the ability to address safety concerns that were highlighted by recent fire incidents in personal electronics and electric vehicles. These incidents are triggered by thermal runaway which could start in a single cell due bad quality or abuse and then propagate across the pack and cause fire. This work will present an overview of energy storage using Li-ion batteries for smart grid applications. Specific examples will be presented on how Li-ion batteries can supplement growth of renewable energy by addressing its intermittent nature and stabilizing the grid (i.e. frequency regulations, voltage regulation).