Show simple item record

dc.contributor.advisorGrijalva, Santiago
dc.contributor.authorXiong, Leilei
dc.date.accessioned2020-05-20T16:46:58Z
dc.date.available2020-05-20T16:46:58Z
dc.date.created2019-05
dc.date.issued2019-01-07
dc.date.submittedMay 2019
dc.identifier.urihttp://hdl.handle.net/1853/62624
dc.description.abstractThe objective of this work is to enhance the state estimator application in the energy management system. The state estimator is responsible for processing raw power system measurements received from substation equipment in the field and filtering out the errors to determine the most likely state of the power system in terms of bus voltage magnitudes and angles. Because the state estimator solution serves as the input to other critical downstream applications in the energy management system, such as contingency analysis and optimal power flow, it is key that a unique solution can be found quickly, and that the solution is accurate. The changing nature of the power grid is introducing new challenges for the state estimator. The first challenge is the need to process more data in less time. To address this issue, we introduce decomposition-based state estimation. The second challenge is the need for more robust power system cybersecurity. We present a cyber-physical security assessment co-simulator that uses an enhanced state estimator to identify whether a control command is malicious. We also introduce a novel approach for N-1 RTU cyber-physical security assessment that ranks RTUs by how critical the impact of their loss is on the state estimator.
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.publisherGeorgia Institute of Technology
dc.subjectPower systems
dc.subjectPower grid
dc.subjectState estimation
dc.subjectCybersecurity
dc.subjectVisualization
dc.titleDecentralized cyber-physical security applications for the future grid energy management system
dc.typeDissertation
dc.description.degreePh.D.
dc.contributor.departmentElectrical and Computer Engineering
thesis.degree.levelDoctoral
dc.contributor.committeeMemberBeyah, Raheem
dc.contributor.committeeMemberSaeedifard, Maryam
dc.contributor.committeeMemberGraber, Lukas
dc.contributor.committeeMemberChau, Polo
dc.date.updated2020-05-20T16:46:58Z


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record