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dc.contributor.authorQi, Junjian
dc.contributor.authorHuang, Weihong
dc.contributor.authorSun, Kai
dc.contributor.authorKang, Wei
dc.date2017
dc.date.accessioned2018-07-19T19:43:33Z
dc.date.available2018-07-19T19:43:33Z
dc.date.issued2017
dc.identifier.citationQi, Junjian, Weihong Huang, Kai Sun, and Wei Kang. "Optimal placement of dynamic var sources by using empirical controllability covariance." IEEE Transactions on Power Systems 32, no. 1 (2017): 240-249.en_US
dc.identifier.urihttp://hdl.handle.net/10945/59233
dc.descriptionThe article of record as published may be found at http://ieeexplore.ieee.org/document/7450656/
dc.description.abstractIn this paper, the empirical controllability covariance (ECC), which is calculated around the operating region of a power system, is applied to quantify the degree of controllability of system voltages under specific dynamic var source locations. An optimal dynamic var source placement method addressing fault-induced delayed voltage recovery (FIDVR) issues is further formulated as an optimization problem that maximizes the determinant of ECC. The optimization problem is effectively solved by the NOMAD solver, which implements the Mesh Adaptive Direct Search algorithm. The proposed method is tested on an NPCC 140-bus system and the results show that the proposed method with fault specified ECC can solve the FIDVR issue caused by the most severe N-1 contingency with fewer dynamic var sources than the Voltage Sensitivity Index (VSI) based method. The proposed method with fault unspecified ECC does not depend on the settings of the contingency and can address more FIDVR issues than VSI method when placing the same number of SVCs under different fault durations. It is also shown that the proposed method can help mitigate voltage collapse.en_US
dc.description.sponsorshipU.S. Department of Energy, Office of Electricity Delivery and Energy Reliability
dc.description.sponsorshipOak Ridge National Laboratory under the MOVARTI project
dc.description.sponsorshipNSF CURENT Engineering Research Center
dc.description.sponsorshipNaval Research Laboratory
dc.format.extent10 p.en_US
dc.publisherIEEEen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.titleOptimal Placement of Dynamic Var Sources by Using Empirical Controllability Covarianceen_US
dc.typeArticleen_US
dc.contributor.corporateNaval Postgraduate School (U.S.)en_US
dc.contributor.departmentApplied Mathematicsen_US
dc.subject.authornonlinear system, optimal placement
dc.subject.authordeterminant
dc.subject.authorfault-induced delayed voltage recovery (FIDVR)
dc.subject.authormesh adaptive direct search
dc.subject.authorControllability
dc.subject.authordynamic var sources
dc.subject.authorempirical controllability covariance
dc.subject.authornonlinear optimization
dc.subject.authorNOMAD
dc.subject.authorvoltage collapse
dc.description.funderEEC-1041877
dc.description.funderDE-AC02-06CH11357
dc.description.funderJob order RAJH6


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