Power of Ensemble Diversity and Randomization for Energy Aggregation
Résumé
We study an ensemble of diverse (inhomogeneous) thermostatically controlled loads aggregated to provide the demand response (DR) services in a district-level energy system. Each load in the ensemble is assumed to be equipped with a random number generator switching heating/cooling on or off with a Poisson rate, $r$, when the load leaves the comfort zone. Ensemble diversity is modeled through inhomogeneity/disorder in the deterministic dynamics of loads. Approached from the standpoint of statistical physics, the ensemble represents a non-equilibrium system driven away from its natural steady state by the DR. The ability of the ensemble to recover by mixing faster to the steady state after its DR's use is advantageous. The trade-off between the level of the aggregator's control, commanding the devices to lower the rate $r$, and the phase-space-oscillatory deterministic dynamics is analyzed. We discover that there exists a critical value, $r_c$, corresponding to both the most efficient mixing and the bifurcation point where the ensemble transitions from the oscillatory relaxation at $r>r_c$ to the pure relaxation at $r
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Soumis le : mardi 22 août 2023-17:26:14
Dernière modification le : jeudi 24 août 2023-10:10:06
Dates et versions
Identifiants
- HAL Id : hal-04185442 , version 1
- ARXIV : 1808.09555
- DOI : 10.1038/s41598-019-41515-4
Citer
David Métivier, Ilia Luchnikov, Michael Chertkov. Power of Ensemble Diversity and Randomization for Energy Aggregation. Scientific Reports, 2019, 9, pp.5910. ⟨10.1038/s41598-019-41515-4⟩. ⟨hal-04185442⟩
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