Title
Robust Stability Assessment in the Presence of Load Dynamics Uncertainty
Abstract
Dynamic response of loads has a significant effect on system stability and directly determines the stability margin of the operating point. Inherent uncertainty and natural variability of load models make the stability assessment especially difficult and may compromise the security of the system. We propose a novel mathematical “robust stability” criterion for the assessment of small-signal stability of operating points. Whenever the criterion is satisfied for a given operating point, it provides mathematical guarantees that the operating point will be stable with respect to small disturbances for any dynamic response of the loads. The criterion can be naturally used for identification of operating regions secure from the occurrence of Hopf bifurcation. Several possible applications of the criterion are discussed, most importantly the concept of robust stability assessment (RSA), that could be integrated in dynamic security assessment packages and used in contingency screening and other planning and operational studies.
Year
DOI
Venue
2014
10.1109/TPWRS.2015.2423293
power and energy society general meeting
Keywords
Field
DocType
bifurcation,dynamics,modeling,power system simulation,power system stability,robustness,uncertainty
Mathematical optimization,Stability margin,Control theory,Load modeling,Operating point,Stability assessment,Control engineering,Engineering,Dynamic security assessment,Contingency,Hopf bifurcation
Journal
Volume
Issue
ISSN
PP
99
0885-8950
Citations 
PageRank 
References 
2
0.42
3
Authors
2
Name
Order
Citations
PageRank
Hung D. Nguyen1103.01
Konstantin S. Turitsyn26214.72