Open AccessA simplified linearized dynamic model for voltage collapse assessment in power systems
Author(s) -
D Tasić,
Svetlana Stojanović
Publication year - 2003
Publication title -
facta universitatis. series electronics and energetics/facta universitatis. series: electronics and energetics
Language(s) - English
Resource type - Journals
eISSN - 2217-5997
pISSN - 0353-3670
DOI - 10.2298/fuee0301145t
Subject(s) - eigenvalues and eigenvectors , generator (circuit theory) , voltage , control theory (sociology) , constant (computer programming) , matrix (chemical analysis) , electric power system , power (physics) , state (computer science) , computer science , mathematics , physics , engineering , materials science , electrical engineering , algorithm , control (management) , thermodynamics , quantum mechanics , artificial intelligence , composite material , programming language
A simplified linearized dynamic model for fast assessment of voltage collapse is developed in this paper. The simplification was made under assumption that the voltages at generator nodes are constant, which means that only power changes at load nodes are considered in analysis. Dimensions of the state matrix, which eigenvalues are used for voltage collapse assessment, decrease under this assumption. Appropriate transformations of linearized state matrix prove that knowledge of values of the dynamical load change time constants is not required for this model.