350Solutions is providing technical support to Arizona State University under a Phase II project sponsored by Environmental Security Technology Certification Program (ESTCP) for design and modeling of hybrid energy storage enabled microgrids for Department of Defense (DoD). This project will optimize and demonstrate in laboratory settings energy storage implementation in relevant DoD microgrid applications. Integrated modeling and design methods optimize a microgrid that can contain multiple energy storage asset types – a hybrid energy storage system (HESS) approach – in conjunction with diesel and renewable generation platforms.
Objectives
This project will demonstrate a storage-enabled microgrid that enhances installation energy security with greater autonomy during a grid outage and reduces operating costs during grid-connected operation. Delivering resilience with a return on investment, the work offers a cost-effective way to achieve broad DoD and branch-specific objectives for 7 to 14-day mission autonomy while also providing a variety of business models and controls approaches to improve financial return and adapt to specific installation needs. The approach will evaluate single energy storage asset and hybrid energy storage systems that integrate multiple storage technologies to value-stack benefits in site-customized DoD microgrids.
Technologies
Primary components of the system include short-duration storage (Skeleton Technology ultracapacitors) that are integrated with medium-term storage (Blue Planet Energy Lithium Ferrous Phosphate) to value-stack the benefits in site-customized DoD microgrids. One or more legacy generators are integrated into the system and any existing solar photovoltaic is also integrated. The controller developed by Arizona State University and Ageto provides main capabilities for (a) operating in parallel with the grid to achieve economic savings, (b) operating during grid outage to increase mission survivability and mission autonomy, and (c) reliably and stably transitioning between grid-connected to islanded mode, and back. The controls approach provides flexibility for behind-the-meter and in-front-of-the-meter applications and can be easily configured for operation with different combinations and sizes of assets.
Benefits
Project benefits for the ESTCP site locations have general applicability to DoD installations using empirical testing that demonstrates how the solution can be adapted to other sites.