Reference : Wide-area Detection of Voltage Instability from Synchronized Phasor Measurements. Par...
Scientific journals : Article
Engineering, computing & technology : Electrical & electronics engineering
Wide-area Detection of Voltage Instability from Synchronized Phasor Measurements. Part I: Principle
Glavic, Mevludin [> >]
Van Cutsem, Thierry mailto [Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation >]
IEEE Transactions on Power Systems
1408 - 1416
Yes (verified by ORBi)
Piscataway, NJ
[en] Long-term voltage stability ; instability detection ; wide-area monitoring ; phasor measurement units ; sensitivity analysis
[en] This two-part paper deals with the early detection of an impending voltage instability from the system states provided by synchronized phasor measurements. Recognizing that voltage instability detection requires assessing a multi-dimensional system, the method fits a set of algebraic equations to the sampled states, and performs an efficient sensitivity computation in order to identify when a combination of load powers has passed through a maximum. The important effects of overexcitation limiters are accounted for. The approach does not require any load model. This first part of the paper is devoted to theoretical foundations of sensitivity calculation along the system trajectory, derivation of the algebraic model, and illustration on a simple 5-bus system involving the long-term dynamics of a load tap changer and a field current limiter.
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Researchers ; Professionals ; Students
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