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This paper aims to identify the critical line on the basis of power system cascading failure search. The proposed critical line identification strategy considers the factors of power flow and topology. Accordingly the electrical betweenness and transmission power are employed during analysis, of which the corresponding theoretical basis is deduced in simple systems. Next follow-up step is to apply...
This paper develops an intelligent decision-making model for network reconfiguration during power system restoration. The goal of the proposed model is to find the shortest restored weighted energized paths for units start-up or load recovery, and a weight coefficient is introduced to comprehensively asses the power line to be energized. The Data Envelopment Analysis (DEA) method with preference information...
A search strategy for identifying chains of events during power system cascading failure is proposed in this paper. This strategy corresponds to the study of overload of power lines and protective relaying hidden failures. By applying optimal power flow (OPF) technique to implement the optimal active and reactive power dispatching, and accordingly reduce the load losses caused by cascading events...
In this paper, the probability theory and fuzzy sets theory were employed to carry out the studies on power system load flow analysis with consideration of wind generation uncertainties. Based on the Possibility/Probability Consistency Principle, the original measurement based wind speed probability density distribution was transformed to the wind speed possibility distribution firstly. The fuzzy...
In this paper, the doubly-fed induction generator (DFIG) for transient stability evaluations of power systems was systematically discussed, and the impacts of grid-connected large DFIG based wind farms on power system transient stability were then studied in detail. In the modeling of DFIG, an equivalent generator model was employed to reflect the combined behavior of the DFIG and its rotor converter...
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