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Real-time Flexibility Feedback for Closed-loop Aggregator and System Operator Coordination

Li, Tongxin and Low, Steven H. and Wierman, Adam (2020) Real-time Flexibility Feedback for Closed-loop Aggregator and System Operator Coordination. . (Unpublished)

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Aggregators have emerged as crucial tools for the coordination of distributed, controllable loads. However, to be used effectively, aggregators must be able to communicate the available flexibility of the loads they control to the system operator in a manner that is both (i) concise enough to be scalable to aggregators governing hundreds or even thousands of loads and (ii) informative enough to allow the system operator to send control signals to the aggregator that lead to optimization of system-level objectives, such as cost minimization, and do not violate private constraints of the loads, such as satisfying specific load demands. In this paper, we present the design of a real-time flexibility feedback signal based on maximization of entropy. The design provides a concise and informative signal that can be used by the system operator to perform online cost minimization and real-time capacity estimation, while provably satisfying the private constraints of the loads. In addition to deriving analytic properties of the design, we illustrate the effectiveness of the design using a dataset from an adaptive electric vehicle charging network.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Li, Tongxin0000-0002-9806-8964
Low, Steven H.0000-0001-6476-3048
Additional Information:This work is supported by NSF through grants CCF 1637598, ECCS 1619352, ECCS 1931662, CPS ECCS 1739355, CPS ECCS 1932611.
Funding AgencyGrant Number
Subject Keywords:Aggregate flexibility, real-time closed-loop control, data-driven cost minimization, electric vehicle charging
Record Number:CaltechAUTHORS:20200707-095020631
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:104237
Deposited By: Tony Diaz
Deposited On:07 Jul 2020 17:13
Last Modified:07 Jul 2020 17:13

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