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Resilient Microgrids Using a State Controller

Aworo, Oluwafemi (2019) Resilient Microgrids Using a State Controller. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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Abstract

Wind energy technology is fast becoming a major component of renewable energy deployment in electric
grids. This technology however, has a major challenge of low machine inertia that could impact the
frequency stability of the system when deployed in microgrids. The frequency response rate to abrupt load
changes becomes an issue when many wind turbines are connected in a microgrid. This dissertation
investigates the impact of this low machine inertia on the nominal frequency and voltage of a microgrid.
The impact of varying wind conditions on the electrical power output is also studied. The system is
modelled in MATLAB/Simulink using a DFIG wind turbine rated at 1.5 MVA. This thesis studies control
strategies to bring the system to a stability irrespective of the wind speeds, load conditions or perturbations.
This work further focuses on how the state controller is used to improve the power system reliability,
availability and resilience during extreme events such as hurricanes, earthquakes and wildfires.

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Details

Item Type: University of Pittsburgh ETD
Status: Unpublished
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Aworo, Oluwafemioja1@pitt.edu
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairKwasinski, Alexisakwasins@pitt.edu
Committee MemberReed, Gregorygfr3@pitt.edu
Committee MemberMao, Zhi-Hongzhm4@pitt.edu
Committee MemberWosu, Sylvanuswosu@pitt.edu
Committee MemberSejdic, Ervinesejdic@pitt.edu
Date: 19 June 2019
Date Type: Publication
Defense Date: 18 January 2019
Approval Date: 19 June 2019
Submission Date: 12 April 2019
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 125
Institution: University of Pittsburgh
Schools and Programs: Swanson School of Engineering > Electrical Engineering
Degree: PhD - Doctor of Philosophy
Thesis Type: Doctoral Dissertation
Refereed: Yes
Uncontrolled Keywords: resilience, microgrid, energy storage, PV inverter
Date Deposited: 19 Jun 2019 14:46
Last Modified: 19 Jun 2019 14:46
URI: http://d-scholarship.pitt.edu/id/eprint/36484

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