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Title: Domestic refrigeration load participation for grid support in power systems with high wind penetrations
Author: Martin Almenta, Macarena
ISNI:       0000 0004 6057 1876
Awarding Body: Queen's University Belfast
Current Institution: Queen's University Belfast
Date of Award: 2016
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The thesis investigates the application of domestic fridge freezer loads for demand side participation (DSP), with the aim of quantifying the benefits of its implementation in the Irish Single Electricity Market (SEM). The thermal and electrical consumption characteristics of a domestic fridge freezer appliance were analysed experimentally, and used to inform the development of a numerical model for a single appliance. Various control strategies were investigated using the model, which vary the temperature limits of the appliance thermostat. The price control strategy based on the day ahead system marginal price was shown to be the most effective. An aggregate numerical model was subsequently developed in order to assess the DSP potential in Ireland considering different appliance characteristics. Staggering the start time at which the control strategy is activated for the individual appliances was shown to be important for avoiding undesired secondary consumption peaks. For a typical winter week in 2020, a peak reduction of at least 68% of the average winter refrigeration load and average overall refrigeration running cost reduction of 8.2% are achieved. The DSP potential was further analysed in the context of integrating domestic refrigeration as a virtual power plant in the SEM for a winter week in December 2020 with significant events of wind curtailment. An equivalent power network of Northern Ireland was implemented in a realistic unit commitment and economic dispatch model of the SEM. The integration of DSP leads to a reduction of the total generation cost in Northern Ireland approximately by €13,000 and an additional 200 MWh of wind generation is introduced into the power system, reducing the wind curtailment by 0.2% for a system non-synchronous penetration of 75%. The work shows that this DSP scheme can provide significant benefits to the system operator and thus is a viable candidate for implementation in the SEM.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available