Decentralized cyber-physical security applications for the future grid energy management system

dc.contributor.advisor Grijalva, Santiago
dc.contributor.author Xiong, Leilei
dc.contributor.committeeMember Beyah, Raheem
dc.contributor.committeeMember Saeedifard, Maryam
dc.contributor.committeeMember Graber, Lukas
dc.contributor.committeeMember Chau, Polo
dc.contributor.department Electrical and Computer Engineering
dc.date.accessioned 2020-05-20T16:46:58Z
dc.date.available 2020-05-20T16:46:58Z
dc.date.created 2019-05
dc.date.issued 2019-01-07
dc.date.submitted May 2019
dc.date.updated 2020-05-20T16:46:58Z
dc.description.abstract The 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.description.degree Ph.D.
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/62624
dc.language.iso en_US
dc.publisher Georgia Institute of Technology
dc.subject Power systems
dc.subject Power grid
dc.subject State estimation
dc.subject Cybersecurity
dc.subject Visualization
dc.title Decentralized cyber-physical security applications for the future grid energy management system
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.advisor Grijalva, Santiago
local.contributor.corporatename School of Electrical and Computer Engineering
local.contributor.corporatename College of Engineering
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relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
thesis.degree.level Doctoral
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