Robustly Maximal Utilisation of Energy-Constrained Distributed Resources
For grid operators managing islanded electrical systems with non-replenishable reserves, this work provides a provably optimal dispatch policy to maximize system survival time.
The paper addresses the problem of maximizing the survival time of an energy-constrained islanded electrical system by optimally dispatching distributed energy reserves. It presents a policy that achieves optimality and proves that no better policy exists for any energy requirement scenario.
We consider the problem of dispatching a fleet of distributed energy reserve devices to collectively meet a sequence of power requests over time. Under the restriction that reserves cannot be replenished, we aim to maximise the survival time of an energy-constrained islanded electrical system; and we discuss realistic scenarios in which this might be the ultimate goal of the grid operator. We present a policy that achieves this optimality, and generalise this into a set-theoretic result that implies there is no better policy available, regardless of the realised energy requirement scenario.