Control of consumer electrical devices for providing electrical grid servicesis expanding in both the scope and the diversity of loads that are engaged incontrol, but there are few experimentally-based models of these devicessuitable for control designs and for assessing the cost of control. Alaboratory-scale test system is developed to experimentally evaluate the use ofa simple window-mount air conditioner for electrical grid regulation services.The experimental test bed is a single, isolated air conditioner embedded in atest system that both emulates the thermodynamics of an air conditioned roomand also isolates the air conditioner from the real-world externalenvironmental and human variables that perturb the careful measurementsrequired to capture a model that fully characterizes both the control responsefunctions and the cost of control. The control response functions and cost ofcontrol are measured using harmonic perturbation of the temperature set pointand a test protocol that further isolates the air conditioner from lowfrequency environmental variability.
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