Title: Aggregation and Disaggregation of Energetic Flexibility from Distributed Energy Resources,
Abstract: A variety of energy resources has been identified as being flexible in their
electric energy consumption or generation. This energetic flexibility can be
used for various purposes such as minimizing energy procurement costs or
providing ancillary services to power grids. To fully leverage the flexibility
available from distributed small-scale resources, their flexibility must be
quantified and aggregated.
This paper introduces a generic and scalable approach for flexible energy
systems to quantitatively describe and price their flexibility based on
zonotopic sets. The description proposed allows aggregators to efficiently pool
the flexibility of large numbers of systems and to make control and market
decisions on the aggregate level. In addition, an algorithm is presented that
distributes aggregate-level control decisions among the individual systems of
the pool in an economically fair and computationally efficient way. Finally, it
is shown how the zonotopic description of flexibility enables an efficient
computation of aggregate regulation power bid-curves.