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System Properties of Packetized Energy Management for Aggregated Diverse Resources

This paper presents the systematic analysis for a model of the aggregate system response of a population of diverse distributed energy resources (DERs) based on a bottom-up energy request methodology known as packetized energy management (PEM). Particularly, for the aggregation of DERs modeled as a bilinear system, a simple discrete-time control law is provided that maximizes the number of accepted requests while tracking a regulation signal provided by a regional transmission organization. Moreover, the mechanics of energy packet completion rates under persistent inputs and the definition of a nominal quality of service (QoS) controller for PEM are provided. Finally, the observability of the PEM system is addressed including an implementation of the extended Kalman filter (EKF) for state estimation of the dynamic state of a diverse DER population.

Author(s):

Luis Duffaut Espinosa    
University of Vermont
United States

Mads Almassalkhi    
University of Vermont
United States

Paul Hines    
University of Vermont
United States

Jeff Frolik    
University of Vermont
United States

 

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