{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/92657"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/92657","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Quickest change detection with applications to line outage detection","abstract":"In this work, we focus on applications of quickest change detection (QCD) theory in the problem of line outage detection and identification. We start by discussing fundamental results of sequential hypothesis testing and QCD, and by proposing an algorithm for the QCD setting under transient dynamics. Following, we apply these results in the line outage detection problem. QCD algorithms are applied on measurements of voltage phase angles, which are collected using phasor measurement units (PMUs), sampling units that sample at an approximate rate of 30 samples per second and that are placed in the buses of the system. The goal is to detect a line outage as fast as possible, under false alarm constraints. First, we study the line outage setting where no transient dynamics are present. Then, we propose a QCD algorithm for the case where transient dynamics are present. Line outage identification schemes are also discussed.","abstract_html":"In this work, we focus on applications of quickest change detection (QCD) theory in the problem of line outage detection and identification. We start by discussing fundamental results of sequential hypothesis testing and QCD, and by proposing an algorithm for the QCD setting under transient dynamics. Following, we apply these results in the line outage detection problem. QCD algorithms are applied on measurements of voltage phase angles, which are collected using phasor measurement units (PMUs), sampling units that sample at an approximate rate of 30 samples per second and that are placed in the buses of the system. The goal is to detect a line outage as fast as possible, under false alarm constraints. First, we study the line outage setting where no transient dynamics are present. Then, we propose a QCD algorithm for the case where transient dynamics are present. Line outage identification schemes are also discussed.","abstract_has_math":false,"creators":["Rovatsos, Georgios"],"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":["Veeravalli, Venugopal V."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2016,"date_issued":"2016-11-10T17:49:05Z","date_published":"2016-11-10T17:49:05Z","updated_at":"2026-07-22T22:26:35Z","subjects":["Power System Line Outage Detection and Identification","Quickest Change Detection","Sequential Analysis"],"languages":["en"],"rights":["Copyright 2016 Georgios Rovatsos"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/92657","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Veeravalli, Venugopal V."]},{"key":"dc:creator","label":"Author","values":["Rovatsos, Georgios"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2016-11-10T17:49:05Z","2016-07-21","2016-08"]},{"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":["Power System Line Outage Detection and Identification","Quickest Change Detection","Sequential Analysis"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2016 Georgios Rovatsos"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/92657"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["In this work, we focus on applications of quickest change detection (QCD) theory in the problem of line outage detection and identification. We start by discussing fundamental results of sequential hypothesis testing and QCD, and by proposing an algorithm for the QCD setting under transient dynamics. Following, we apply these results in the line outage detection problem. QCD algorithms are applied on measurements of voltage phase angles, which are collected using phasor measurement units (PMUs), sampling units that sample at an approximate rate of 30 samples per second and that are placed in the buses of the system. The goal is to detect a line outage as fast as possible, under false alarm constraints. First, we study the line outage setting where no transient dynamics are present. Then, we propose a QCD algorithm for the case where transient dynamics are present. Line outage identification schemes are also discussed.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2016-11-09 without embargo terms","The student, Georgios Rovatsos, accepted the attached license on 2016-07-19 at 20:13.","The student, Georgios Rovatsos, submitted this Thesis for approval on 2016-07-19 at 20:21.","This Thesis was approved for publication on 2016-07-21 at 09:07.","DSpace SAF Submission Ingestion Package generated from Vireo submission #10025 on 2016-11-09 at 10:25:38","Made available in DSpace on 2016-11-10T17:49:05Z (GMT). No. of bitstreams: 2 ROVATSOS-THESIS-2016.pdf: 549980 bytes, checksum: 7f489565929c96f4d8f382a5fdb73e20 (MD5) LICENSE.txt: 4214 bytes, checksum: 1e5c1098eb3a4ef8306c66fa143c2eb2 (MD5) Previous issue date: 2016-07-21"]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Quickest change detection with applications to line outage detection"]}]}],"canonical_facts":{"dc:contributor":["Veeravalli, Venugopal V."],"dc:creator":["Rovatsos, Georgios"],"dc:date":["2016-11-10T17:49:05Z","2016-07-21","2016-08"],"dc:description":["In this work, we focus on applications of quickest change detection (QCD) theory in the problem of line outage detection and identification. We start by discussing fundamental results of sequential hypothesis testing and QCD, and by proposing an algorithm for the QCD setting under transient dynamics. Following, we apply these results in the line outage detection problem. QCD algorithms are applied on measurements of voltage phase angles, which are collected using phasor measurement units (PMUs), sampling units that sample at an approximate rate of 30 samples per second and that are placed in the buses of the system. The goal is to detect a line outage as fast as possible, under false alarm constraints. First, we study the line outage setting where no transient dynamics are present. Then, we propose a QCD algorithm for the case where transient dynamics are present. Line outage identification schemes are also discussed.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2016-11-09 without embargo terms","The student, Georgios Rovatsos, accepted the attached license on 2016-07-19 at 20:13.","The student, Georgios Rovatsos, submitted this Thesis for approval on 2016-07-19 at 20:21.","This Thesis was approved for publication on 2016-07-21 at 09:07.","DSpace SAF Submission Ingestion Package generated from Vireo submission #10025 on 2016-11-09 at 10:25:38","Made available in DSpace on 2016-11-10T17:49:05Z (GMT). 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