{"id":{"repo_id":"utc","oai_identifier":"oai:scholar.utc.edu:theses-1774"},"canonical_url":"https://search.dev.ndltd.org/etd/utc/oai:scholar.utc.edu:theses-1774","repository":{"repo_id":"utc","name":"University of Tennessee - Chattanooga","base_url":"https://scholar.utc.edu/do/oai/"},"display":{"title":"Voltage collapse modes in power networks","abstract":"Voltage Collapse is instability of a heavily loaded electric power system, which leads to declining voltages and blackout, and it is typically associated with reactive power limitations of the power system. Therefore, knowledge of the critical loading point is vital to ensure a secure mode of operation for the power system. Over the years, different methods were proposed in the literature to identify proximity to voltage collapse. However, these techniques were derived utilizing only the voltage limitation of the load buses. Voltage collapse is often interlinked with static transfer stability limit. In this work, different voltage collapse modes are addressed and a new algorithm that takes into account both load bus voltage and generator bus angle behavior is proposed to estimate the collapse point. The proposed method was examined on several IEEE test systems. Also, superiority of the proposed method in comparison with the other techniques was proven.","abstract_html":"Voltage Collapse is instability of a heavily loaded electric power system, which leads to declining voltages and blackout, and it is typically associated with reactive power limitations of the power system. Therefore, knowledge of the critical loading point is vital to ensure a secure mode of operation for the power system. Over the years, different methods were proposed in the literature to identify proximity to voltage collapse. However, these techniques were derived utilizing only the voltage limitation of the load buses. Voltage collapse is often interlinked with static transfer stability limit. In this work, different voltage collapse modes are addressed and a new algorithm that takes into account both load bus voltage and generator bus angle behavior is proposed to estimate the collapse point. The proposed method was examined on several IEEE test systems. Also, superiority of the proposed method in comparison with the other techniques was proven.","abstract_has_math":false,"creators":["Ahmed, Areeg Abubakr Ibrahim"],"institution":"University of Tennessee at Chattanooga","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":["Karrar, Abdelrahman A.","Disfani, Vahid R.; Kobet, Gary L.","College of Engineering and Computer Science"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2021,"date_issued":"2021-08-07T07:00:00Z","date_published":"2021-08-07T07:00:00Z","updated_at":"2026-07-24T05:46:59Z","subjects":["Electric power systems -- Reliability","Electric power system stability","Electric power failures -- Prevention"],"languages":["English","eng"],"rights":[],"rights_urls":["https://rightsstatements.org/page/InC/1.0/?language=en"],"identifier_entries":[]},"links":{"outbound_url":"https://scholar.utc.edu/theses/614","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Karrar, Abdelrahman A.","Disfani, Vahid R.; Kobet, Gary L.","College of Engineering and Computer Science"]},{"key":"dc:creator","label":"Author","values":["Ahmed, Areeg Abubakr Ibrahim"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2019-08-01T07:00:00Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2021-08-07T07:00:00Z"]},{"key":"dc:publisher","label":"Institution","values":["University of Tennessee at Chattanooga","Chattanooga (Tenn.)"]},{"key":"dc:relation","label":"Dc Relation","values":["Masters Theses and Doctoral Dissertations"]},{"key":"dc:type","label":"Dc Type","values":["Masters theses","Text"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Electric power systems -- Reliability","Electric power system stability","Electric power failures -- Prevention"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["English","eng"]},{"key":"dc:rights","label":"Dc Rights","values":["https://rightsstatements.org/page/InC/1.0/?language=en"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://scholar.utc.edu/theses/614"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Dept. of Electrical Engineering","M. S.; A thesis submitted to the faculty of the University of Tennessee at Chattanooga in partial fulfillment of the requirements of the degree of Master of Science."]},{"key":"dc:description.abstract","label":"Abstract","values":["Voltage Collapse is instability of a heavily loaded electric power system, which leads to declining voltages and blackout, and it is typically associated with reactive power limitations of the power system. Therefore, knowledge of the critical loading point is vital to ensure a secure mode of operation for the power system. Over the years, different methods were proposed in the literature to identify proximity to voltage collapse. However, these techniques were derived utilizing only the voltage limitation of the load buses. Voltage collapse is often interlinked with static transfer stability limit. In this work, different voltage collapse modes are addressed and a new algorithm that takes into account both load bus voltage and generator bus angle behavior is proposed to estimate the collapse point. The proposed method was examined on several IEEE test systems. Also, superiority of the proposed method in comparison with the other techniques was proven."]},{"key":"dc:title","label":"Title","values":["Voltage collapse modes in power networks"]}]}],"canonical_facts":{"dc:contributor":["Karrar, Abdelrahman A.","Disfani, Vahid R.; Kobet, Gary L.","College of Engineering and Computer Science"],"dc:creator":["Ahmed, Areeg Abubakr Ibrahim"],"dc:date":["2019-08-01T07:00:00Z"],"dc:date.available":["2021-08-07T07:00:00Z"],"dc:description":["Dept. of Electrical Engineering","M. S.; A thesis submitted to the faculty of the University of Tennessee at Chattanooga in partial fulfillment of the requirements of the degree of Master of Science."],"dc:description.abstract":["Voltage Collapse is instability of a heavily loaded electric power system, which leads to declining voltages and blackout, and it is typically associated with reactive power limitations of the power system. Therefore, knowledge of the critical loading point is vital to ensure a secure mode of operation for the power system. Over the years, different methods were proposed in the literature to identify proximity to voltage collapse. However, these techniques were derived utilizing only the voltage limitation of the load buses. Voltage collapse is often interlinked with static transfer stability limit. In this work, different voltage collapse modes are addressed and a new algorithm that takes into account both load bus voltage and generator bus angle behavior is proposed to estimate the collapse point. The proposed method was examined on several IEEE test systems. Also, superiority of the proposed method in comparison with the other techniques was proven."],"dc:identifier":["https://scholar.utc.edu/theses/614"],"dc:language":["English","eng"],"dc:publisher":["University of Tennessee at Chattanooga","Chattanooga (Tenn.)"],"dc:relation":["Masters Theses and Doctoral Dissertations"],"dc:rights":["https://rightsstatements.org/page/InC/1.0/?language=en"],"dc:subject":["Electric power systems -- Reliability","Electric power system stability","Electric power failures -- Prevention"],"dc:title":["Voltage collapse modes in power networks"],"dc:type":["Masters theses","Text"]},"updated_at":"2026-07-24T05:46:59Z"}