{"id":{"repo_id":"toronto-retro","oai_identifier":"oai:utoronto.scholaris.ca:1807/130818"},"canonical_url":"https://search.dev.ndltd.org/etd/toronto-retro/oai:utoronto.scholaris.ca:1807/130818","repository":{"repo_id":"toronto-retro","name":"University of Toronto","base_url":"https://utoronto.scholaris.ca/server/oai/request"},"display":{"title":"Stability Enhancement of the Microgrid under High-depth of Penetration of Electronically-coupled Resources","abstract":"This thesis introduces, develops, and evaluates an on-line (real-time) methodology to optimize (adjust) a set of pre-specified microgrid parameters, e.g., those of local controllers, to maintain stability of a microgrid subsequent to each discrete-event and a small-signal perturbation. A discrete-event changes the states and necessitates a new state-space formulation and a small-signal perturbation changes the operating point of the microgrid. The focus of this work is primarily on small-signal dynamics.A hierarchical supervisory control (SC) system, which provides power management for the microgrid, embeds the algorithms of the proposed method and enables parameter adjustment. The SC (i) identifies discrete-events and small-signal perturbations, (ii) activates and executes the corresponding algorithms accordingly, and (iii) commands the required parameters adjustment to the local controllers. The embedded tools within the SC are a Newton-based power-flow analysis, a modular state-space formulation, a cluster eigen analysis, a steepest-descent optimization, and a discrete-event supervisor. An off-grid microgrid and a multi-microgrid system, are used for the reported studies. Feasibility of the SC real-time algorithms is demonstrated based on their implementation on an FPGA hardware platform. The study results show that the proposed method can effectively enhance the microgrid stability subsequent to a set of single contingencies.","abstract_html":"This thesis introduces, develops, and evaluates an on-line (real-time) methodology to optimize (adjust) a set of pre-specified microgrid parameters, e.g., those of local controllers, to maintain stability of a microgrid subsequent to each discrete-event and a small-signal perturbation. A discrete-event changes the states and necessitates a new state-space formulation and a small-signal perturbation changes the operating point of the microgrid. The focus of this work is primarily on small-signal dynamics.A hierarchical supervisory control (SC) system, which provides power management for the microgrid, embeds the algorithms of the proposed method and enables parameter adjustment. The SC (i) identifies discrete-events and small-signal perturbations, (ii) activates and executes the corresponding algorithms accordingly, and (iii) commands the required parameters adjustment to the local controllers. The embedded tools within the SC are a Newton-based power-flow analysis, a modular state-space formulation, a cluster eigen analysis, a steepest-descent optimization, and a discrete-event supervisor. An off-grid microgrid and a multi-microgrid system, are used for the reported studies. Feasibility of the SC real-time algorithms is demonstrated based on their implementation on an FPGA hardware platform. The study results show that the proposed method can effectively enhance the microgrid stability subsequent to a set of single contingencies.","abstract_has_math":false,"creators":["Mohamed, Sherif Helmy Mahmoud"],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":"Electrical and Computer Engineering","school":null,"contributors":[],"advisors":["Iravani, Reza"],"committee_chairs":[],"committee_members":[],"year":2021,"date_issued":"2021-11","date_published":"2021-11","updated_at":"2026-07-27T21:27:54Z","subjects":[],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/1807/130818","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Iravani, Reza"]},{"key":"dc:contributor.department","label":"Department","values":["Electrical and Computer Engineering"]},{"key":"dc:creator","label":"Author","values":["Mohamed, Sherif Helmy Mahmoud"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2021-11"]},{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2023-11-29T05:17:52Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2023-11-29T05:17:52Z"]},{"key":"dc:date.issued","label":"Date","values":["2021-11"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/1807/130818"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["This thesis introduces, develops, and evaluates an on-line (real-time) methodology to optimize (adjust) a set of pre-specified microgrid parameters, e.g., those of local controllers, to maintain stability of a microgrid subsequent to each discrete-event and a small-signal perturbation. A discrete-event changes the states and necessitates a new state-space formulation and a small-signal perturbation changes the operating point of the microgrid. The focus of this work is primarily on small-signal dynamics.A hierarchical supervisory control (SC) system, which provides power management for the microgrid, embeds the algorithms of the proposed method and enables parameter adjustment. The SC (i) identifies discrete-events and small-signal perturbations, (ii) activates and executes the corresponding algorithms accordingly, and (iii) commands the required parameters adjustment to the local controllers. The embedded tools within the SC are a Newton-based power-flow analysis, a modular state-space formulation, a cluster eigen analysis, a steepest-descent optimization, and a discrete-event supervisor. An off-grid microgrid and a multi-microgrid system, are used for the reported studies. Feasibility of the SC real-time algorithms is demonstrated based on their implementation on an FPGA hardware platform. The study results show that the proposed method can effectively enhance the microgrid stability subsequent to a set of single contingencies."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["Ph.D."]},{"key":"dc:title","label":"Title","values":["Stability Enhancement of the Microgrid under High-depth of Penetration of Electronically-coupled Resources"]}]}],"canonical_facts":{"dc:contributor.advisor":["Iravani, Reza"],"dc:contributor.department":["Electrical and Computer Engineering"],"dc:creator":["Mohamed, Sherif Helmy Mahmoud"],"dc:date":["2021-11"],"dc:date.accessioned":["2023-11-29T05:17:52Z"],"dc:date.available":["2023-11-29T05:17:52Z"],"dc:date.issued":["2021-11"],"dc:description.abstract":["This thesis introduces, develops, and evaluates an on-line (real-time) methodology to optimize (adjust) a set of pre-specified microgrid parameters, e.g., those of local controllers, to maintain stability of a microgrid subsequent to each discrete-event and a small-signal perturbation. A discrete-event changes the states and necessitates a new state-space formulation and a small-signal perturbation changes the operating point of the microgrid. The focus of this work is primarily on small-signal dynamics.A hierarchical supervisory control (SC) system, which provides power management for the microgrid, embeds the algorithms of the proposed method and enables parameter adjustment. The SC (i) identifies discrete-events and small-signal perturbations, (ii) activates and executes the corresponding algorithms accordingly, and (iii) commands the required parameters adjustment to the local controllers. The embedded tools within the SC are a Newton-based power-flow analysis, a modular state-space formulation, a cluster eigen analysis, a steepest-descent optimization, and a discrete-event supervisor. An off-grid microgrid and a multi-microgrid system, are used for the reported studies. Feasibility of the SC real-time algorithms is demonstrated based on their implementation on an FPGA hardware platform. The study results show that the proposed method can effectively enhance the microgrid stability subsequent to a set of single contingencies."],"dc:description.degree":["Ph.D."],"dc:identifier.uri":["http://hdl.handle.net/1807/130818"],"dc:title":["Stability Enhancement of the Microgrid under High-depth of Penetration of Electronically-coupled Resources"],"dc:type":["Thesis"]},"updated_at":"2026-07-27T21:27:54Z"}