12 research outputs found
Techno-economic and business case assessment of low carbon technologies in distributed multi-energy systems
Tracing, Ranking and Pricing DER Flexibility in Active Distribution Networks
This paper presents a framework for analysing the aggregated flexibility of
active distribution networks (ADNs) with distributed energy resources (DER).
The analysis takes a different perspective than existing studies, which focus
on characterising flexibility as the limits of the flexible power provision,
i.e., the set of the network feasible operating points in the P-Q space.
Instead, this work aims to estimate the contributions of different flexible
units to the aggregated flexibility, which is essential for flexible power
ranking and pricing. The proposed framework exploits cost-minimising OPF models
complemented with cooperative game formulations that are able to capture the
combinatorial nature of activating multiple flexible units. Moreover, in
contrast to existing studies that imply perfect coordination of units, the
proposed framework specifies the actions needed to reach feasible operating
points, reflecting the nonlinearities of the network flexibility model.
Extensive simulations are performed for different flexibility metrics to
demonstrate the applicability of the framework. Depending on the metric
selected (capacity, cost, or economic surplus of flexibility), distribution
system operators (DSOs) can identify the most critical flexible units or
remunerate units for participating in flexibility services provision