Benchmarking Integrated FACTS and Modern Energy Storage Systems

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The electric power system is one of our nation's critical infrastructures. Interruptions createenormous economic and social impact. Momentary outages and voltage sags alone account for$25-400 billion/year in the US. When coupled with FACTS technology, modern energy storagesystems (ESS), such as batteries, flywheels, SMES, and super-capacitors, can improve stability,power quality, and the reliability of power systems. Many power system problems can beimpacted more effectively by utilizing active power control. Integrating energy storage systeminto FACTS devices can provide dynamic decentralized active power capabilities and givetransmission service providers much needed flexibility for mitigating transmission level powerflow problems and lead to more economical power delivery, better power quality, and improvedreliability. This project will develop a scientific framework to guide the technical decision-makingprocess of when, where, and how to integrate FACTS/ESS into the bulk power toalleviate dynamic perturbations and improve transmission congestion and loop flows.This work will generate benchmark systems for three energy storage technologies (battery,SMES, and super-capacitors), and develop a modular benchmark power grid model forevaluating ESS performance. This study will culminate in a comprehensive set of guidelines andmetrics for the implementation of FACTS/ESS in power systems.The intellectual merits and tangible outcomes of this research include the development oftheoretical understanding of power system responses to dynamic active powerinjection/absorption, a comprehensive characterization of the primary energy storagetechnologies with the corresponding power electronic interfaces, and a comparison of thedifferent FACTS/ESS with respect to typical applications.