Risk based multi-objective security control and congestion management

dc.contributor.advisor James D. McCalley
dc.contributor.author Xiao, Fei
dc.contributor.department Electrical and Computer Engineering
dc.date 2018-08-22T21:55:37.000
dc.date.accessioned 2020-06-30T07:47:40Z
dc.date.available 2020-06-30T07:47:40Z
dc.date.copyright Mon Jan 01 00:00:00 UTC 2007
dc.date.issued 2007-01-01
dc.description.abstract <p>Deterministic security criterion has served power system operation, congestion management quite well in last decades. It is simple to be implemented in a security control model, for example, security constrained optimal power flow (SCOPF). However, since event likelihood and violation information are not addressed, it does not provide quantitative security understanding, and so results in system inadequate awareness. Therefore, even if computation capability and information techniques have been greatly improved and widely applied in the operation support tool, operators are still not able to get rid of the security threat, especially in the market competitive environment.;Probability approach has shown its strong ability for planning purpose, and recently gets attention in operation area. Since power system security assessment needs to analyze consequence of all credible events, risk defined as multiplication of event probability and severity is well suited to give an indication to quantify the system security level, and congestion level as well. Since risk addresses extra information, its application for making "BETTER" online operation decision becomes an attractive research topic.;This dissertation focus on system online risk calculation, risk based multi-objective optimization model development, risk based security control design, and risk based congestion management. A regression model is proposed to predict contingency probability using weather and geography information for online risk calculation. Risk based multi-objective optimization (RBMO) model is presented, considering conflict objectives: risks and cost. Two types of method, classical methods and evolutionary algorithms, are implemented to solve RBMO problem, respectively. A risk based decision making architecture for security control is designed based on the Pareto-optimal solution understanding, visualization tool and high level information analysis. Risk based congestion management provides a market lever to uniformly expand a security "VOLUME", where greater volume means more risk. Meanwhile, risk based LMP signal contracts ALL dimensions of this "VOLUME" in proper weights (state probabilities) at a time.;Two test systems, 6-bus and IEEE RTS 96, are used to test developed algorithms. The simulation results show that incorporating risk into security control and congestion management will evolve our understanding of security level, improve control and market efficiency, and support operator to maneuver system in an effective fashion.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/rtd/15848/
dc.identifier.articleid 16847
dc.identifier.contextkey 7051163
dc.identifier.doi https://doi.org/10.31274/rtd-180813-17051
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath rtd/15848
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/69521
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/rtd/15848/3291683.PDF|||Fri Jan 14 20:47:28 UTC 2022
dc.subject.disciplines Electrical and Electronics
dc.subject.keywords Electrical and computer engineering;Electrical engineering;
dc.title Risk based multi-objective security control and congestion management
dc.type article
dc.type.genre dissertation
dspace.entity.type Publication
relation.isOrgUnitOfPublication a75a044c-d11e-44cd-af4f-dab1d83339ff
thesis.degree.level dissertation
thesis.degree.name Doctor of Philosophy
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