{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/124437"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/124437","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Modeling, simulation, and control design of electro-mechanical dynamics in heterogeneous power systems","abstract":"In this thesis, a general modeling framework to study power systems with synchronous generators and grid forming inverters with droop control, virtual synchronous machine control, and dispatchable virtual oscillator control is developed. To mitigate model complexity and facilitate analytical understanding, this framework employs reduced-order models that are applicable for electro-mechanical phenomena occurring on time-scales ranging from tenths of seconds to minutes. Along with developing the open-loop model for this framework, different types of closed-loop control are detailed, including an LQR method that can provide augmented primary control and secondary control. Further, a MATLAB/Simulink tool based on this modeling framework is described, a tool that allows for fast development and flexible simulation of heterogeneous power system models. Finally, the tool’s functionality is demonstrated with various numerical experiments. Its ability to simulate open-loop power systems is tested with a custom 4-bus test case and modified IEEE 14-bus and 57-bus test cases. In addition, an approximation technique to decrease computation time while maintaining sufficient accuracy is tested. Lastly, the tool’s ability to simulate closed-loop control is demonstrated on a custom 2-bus test case, comparing conventional secondary control techniques to the proposed LQR method.","abstract_html":"In this thesis, a general modeling framework to study power systems with synchronous generators and grid forming inverters with droop control, virtual synchronous machine control, and dispatchable virtual oscillator control is developed. To mitigate model complexity and facilitate analytical understanding, this framework employs reduced-order models that are applicable for electro-mechanical phenomena occurring on time-scales ranging from tenths of seconds to minutes. Along with developing the open-loop model for this framework, different types of closed-loop control are detailed, including an LQR method that can provide augmented primary control and secondary control. Further, a MATLAB/Simulink tool based on this modeling framework is described, a tool that allows for fast development and flexible simulation of heterogeneous power system models. Finally, the tool’s functionality is demonstrated with various numerical experiments. Its ability to simulate open-loop power systems is tested with a custom 4-bus test case and modified IEEE 14-bus and 57-bus test cases. In addition, an approximation technique to decrease computation time while maintaining sufficient accuracy is tested. Lastly, the tool’s ability to simulate closed-loop control is demonstrated on a custom 2-bus test case, comparing conventional secondary control techniques to the proposed LQR method.","abstract_has_math":false,"creators":["Williams, Ethan"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Electrical & Computer Engr","degree_department":null,"school":null,"contributors":["Dominguez-Garcia, Alejandro D"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2024,"date_issued":"2024-05","date_published":"2024-05","updated_at":"2026-07-22T22:25:00Z","subjects":["Modeling","Synchronous Generators","Grid-forming Inverters","Microgrids","Control","Simulator","Matlab/simulink"],"languages":["eng","en"],"rights":["Copyright 2024 Ethan Williams"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/124437","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Dominguez-Garcia, Alejandro D"]},{"key":"dc:creator","label":"Author","values":["Williams, Ethan"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2024-05","2024-05-02"]},{"key":"dc:type","label":"Dc Type","values":["Text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical & Computer Engr"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Modeling","Synchronous Generators","Grid-forming Inverters","Microgrids","Control","Simulator","Matlab/simulink"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng","en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2024 Ethan Williams"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/124437"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["In this thesis, a general modeling framework to study power systems with synchronous generators and grid forming inverters with droop control, virtual synchronous machine control, and dispatchable virtual oscillator control is developed. To mitigate model complexity and facilitate analytical understanding, this framework employs reduced-order models that are applicable for electro-mechanical phenomena occurring on time-scales ranging from tenths of seconds to minutes. Along with developing the open-loop model for this framework, different types of closed-loop control are detailed, including an LQR method that can provide augmented primary control and secondary control. Further, a MATLAB/Simulink tool based on this modeling framework is described, a tool that allows for fast development and flexible simulation of heterogeneous power system models. Finally, the tool’s functionality is demonstrated with various numerical experiments. Its ability to simulate open-loop power systems is tested with a custom 4-bus test case and modified IEEE 14-bus and 57-bus test cases. In addition, an approximation technique to decrease computation time while maintaining sufficient accuracy is tested. Lastly, the tool’s ability to simulate closed-loop control is demonstrated on a custom 2-bus test case, comparing conventional secondary control techniques to the proposed LQR method.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms","The student, Ethan Williams, accepted the attached license on 2024-04-29 at 21:43.","The student, Ethan Williams, submitted this Thesis for approval on 2024-04-29 at 21:51.","This Thesis was approved for publication on 2024-05-02 at 10:53.","DSpace SAF Submission Ingestion Package generated from Vireo submission #20703 on 2024-09-16 at 00:37:24"]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Modeling, simulation, and control design of electro-mechanical dynamics in heterogeneous power systems"]}]}],"canonical_facts":{"dc:contributor":["Dominguez-Garcia, Alejandro D"],"dc:creator":["Williams, Ethan"],"dc:date":["2024-05","2024-05-02"],"dc:description":["In this thesis, a general modeling framework to study power systems with synchronous generators and grid forming inverters with droop control, virtual synchronous machine control, and dispatchable virtual oscillator control is developed. To mitigate model complexity and facilitate analytical understanding, this framework employs reduced-order models that are applicable for electro-mechanical phenomena occurring on time-scales ranging from tenths of seconds to minutes. Along with developing the open-loop model for this framework, different types of closed-loop control are detailed, including an LQR method that can provide augmented primary control and secondary control. Further, a MATLAB/Simulink tool based on this modeling framework is described, a tool that allows for fast development and flexible simulation of heterogeneous power system models. Finally, the tool’s functionality is demonstrated with various numerical experiments. Its ability to simulate open-loop power systems is tested with a custom 4-bus test case and modified IEEE 14-bus and 57-bus test cases. In addition, an approximation technique to decrease computation time while maintaining sufficient accuracy is tested. Lastly, the tool’s ability to simulate closed-loop control is demonstrated on a custom 2-bus test case, comparing conventional secondary control techniques to the proposed LQR method.","Submission original under an indefinite embargo labeled 'Open Access'. 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