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Control of distributed electric water heaters for ancillary services provision in the power grid


A. Martinez Gomez

Master Thesis, HS14 (10127)

The increasing penetration of renewable energy resources into the power grid has posed a variety of new challenges for their smart employment. Thermostatically controlled loads are of high interest due to their ability to store energy in the form of heat. Aggregated populations of such devices have been introduced as part of demand side management control strategies, to steer the power of these electrical devices. The ability of such an aggregated system to balance the behaviour of intermittent renewable resources is of high interest. In this project, modeling and control design of such an aggregated system is addressed. The type of devices studied is the electric water heater. System identification techniques are developed to achieve a population model, measuring the aggregate power consumption after application of a previously defined external control signal. Finally, a controller is implemented to steer the power output of the population to track a desired reference trajectory. This controller performs well with reference signals of reasonable duration. Also, to ensure good performance sufficient recovery time for the system dynamics due to previous controller disturbances has to be maintained.

Supervisors: Maryam Kamgarpour, Evangelos Vrettos, John Lygeros


Type of Publication:

(12)Diploma/Master Thesis

J. Lygeros

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% Autogenerated BibTeX entry
@PhdThesis { Xxx:2015:IFA_5150
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