{"id":{"repo_id":"utc","oai_identifier":"oai:scholar.utc.edu:theses-1672"},"canonical_url":"https://search.dev.ndltd.org/etd/utc/oai:scholar.utc.edu:theses-1672","repository":{"repo_id":"utc","name":"University of Tennessee - Chattanooga","base_url":"https://scholar.utc.edu/do/oai/"},"display":{"title":"Investigation of a new method for synchronous generator loss of excitation protection","abstract":"ABSTRACT Synchronous generator loss of field can compromise both generator and power grid stability and therefore must be quickly detected. In this thesis, a new proposed method for LOF detection has been further explored and its shortcomings corrected.The detection index has been calculated based on these new modifications. The modifications include a more robust delta estimation technique and a removal of a required algorithm condition. Two methods are used to estimate the rotor angle and bothprovide a similar estimation. The first method depends on the integration of the rotor speed over time, while the second method is based on equations presented in a published paper. Moreover, the algorithm was tested on both a 2-bus system and the IEEE 9-bus system to investigate the detection time, security and reliability of the proposed method. The simulation model wasbuiltusing a Real Time Digital Simulator (RTDS) to simulate generator loss of excitation on a 2-bus and 9-bus system. The algorithm was then tested under various operating conditions (normal system conditions and disturbances). The advantages and drawbacks of the proposed algorithm are discussed in the thesis.","abstract_html":"ABSTRACT Synchronous generator loss of field can compromise both generator and power grid stability and therefore must be quickly detected. In this thesis, a new proposed method for LOF detection has been further explored and its shortcomings corrected.The detection index has been calculated based on these new modifications. The modifications include a more robust delta estimation technique and a removal of a required algorithm condition. Two methods are used to estimate the rotor angle and bothprovide a similar estimation. The first method depends on the integration of the rotor speed over time, while the second method is based on equations presented in a published paper. Moreover, the algorithm was tested on both a 2-bus system and the IEEE 9-bus system to investigate the detection time, security and reliability of the proposed method. The simulation model wasbuiltusing a Real Time Digital Simulator (RTDS) to simulate generator loss of excitation on a 2-bus and 9-bus system. The algorithm was then tested under various operating conditions (normal system conditions and disturbances). The advantages and drawbacks of the proposed algorithm are discussed in the thesis.","abstract_has_math":false,"creators":["Mohammed, Enass"],"institution":"University of Tennessee at Chattanooga","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":["Eltom, Ahmed H.","Karrar, Abdelrahman A.; Kobet, Gary L.","College of Engineering and Computer Science"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":null,"date_issued":"","date_published":null,"updated_at":"2026-07-24T05:46:51Z","subjects":["Electric power systems","Electric power system stability"],"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/520","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Eltom, Ahmed H.","Karrar, Abdelrahman A.; Kobet, Gary L.","College of Engineering and Computer Science"]},{"key":"dc:creator","label":"Author","values":["Mohammed, Enass"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2017-08-01T07:00:00Z"]},{"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","Electric power system stability"]}]},{"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/520"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Dept. of Electrical Engineering","M. A.; 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 Arts."]},{"key":"dc:description.abstract","label":"Abstract","values":["ABSTRACT Synchronous generator loss of field can compromise both generator and power grid stability and therefore must be quickly detected. In this thesis, a new proposed method for LOF detection has been further explored and its shortcomings corrected.The detection index has been calculated based on these new modifications. The modifications include a more robust delta estimation technique and a removal of a required algorithm condition. Two methods are used to estimate the rotor angle and bothprovide a similar estimation. The first method depends on the integration of the rotor speed over time, while the second method is based on equations presented in a published paper. Moreover, the algorithm was tested on both a 2-bus system and the IEEE 9-bus system to investigate the detection time, security and reliability of the proposed method. The simulation model wasbuiltusing a Real Time Digital Simulator (RTDS) to simulate generator loss of excitation on a 2-bus and 9-bus system. The algorithm was then tested under various operating conditions (normal system conditions and disturbances). The advantages and drawbacks of the proposed algorithm are discussed in the thesis."]},{"key":"dc:title","label":"Title","values":["Investigation of a new method for synchronous generator loss of excitation protection"]}]}],"canonical_facts":{"dc:contributor":["Eltom, Ahmed H.","Karrar, Abdelrahman A.; Kobet, Gary L.","College of Engineering and Computer Science"],"dc:creator":["Mohammed, Enass"],"dc:date":["2017-08-01T07:00:00Z"],"dc:description":["Dept. of Electrical Engineering","M. A.; 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 Arts."],"dc:description.abstract":["ABSTRACT Synchronous generator loss of field can compromise both generator and power grid stability and therefore must be quickly detected. In this thesis, a new proposed method for LOF detection has been further explored and its shortcomings corrected.The detection index has been calculated based on these new modifications. The modifications include a more robust delta estimation technique and a removal of a required algorithm condition. Two methods are used to estimate the rotor angle and bothprovide a similar estimation. The first method depends on the integration of the rotor speed over time, while the second method is based on equations presented in a published paper. Moreover, the algorithm was tested on both a 2-bus system and the IEEE 9-bus system to investigate the detection time, security and reliability of the proposed method. The simulation model wasbuiltusing a Real Time Digital Simulator (RTDS) to simulate generator loss of excitation on a 2-bus and 9-bus system. The algorithm was then tested under various operating conditions (normal system conditions and disturbances). The advantages and drawbacks of the proposed algorithm are discussed in the thesis."],"dc:identifier":["https://scholar.utc.edu/theses/520"],"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","Electric power system stability"],"dc:title":["Investigation of a new method for synchronous generator loss of excitation protection"],"dc:type":["Masters theses","Text"]},"updated_at":"2026-07-24T05:46:51Z"}