Voltage stability and controllability indices for multimachine power systems

 
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1995 (EN)
Voltage stability and controllability indices for multimachine power systems (EN)

Vournas, CD (EN)

N/A (EN)

This paper presents a voltage stability index (VSI) and a voltage controllability index (VCI), related to the eigenvalues of mxm matrices in a multimachine power system made up of m synchronous generators and a number of infinite buses. System loads can have an arbitrary voltage sensitivity described by generalized voltage exponents, These nonlinear loads are linearized around an operating point and incorporated into a modified ''admittance'' matrix; which is subsequently reduced to the generator terminals using an efficient algorithm and sparsity techniques. The indices proposed are tested in a practical system and it is demonstrated that they provides a timely warning during a sequence of events leading to voltage collapse. (EN)

journalArticle

Matrix algebra (EN)
multimachine power system (EN)
System stability (EN)
Admittance matrix (EN)
Electric power systems (EN)
Voltage control (EN)
Voltage collapse (EN)
Electric loads (EN)
Eigenvalues and eigenfunctions (EN)
Voltage controllability index (EN)
Linearization (EN)
Sensitivity analysis (EN)
Synchronous Generator (EN)
Efficient Algorithm (EN)
Vectors (EN)
Voltage Collapse (EN)
Algorithms (EN)
Multimachine power system (EN)
Indexation (EN)
Power System (EN)
Voltage Stability (EN)
Differential equations (EN)
Synchronous generators (EN)
Voltage stability index (EN)
Jacobian submatrices (EN)

Εθνικό Μετσόβιο Πολυτεχνείο (EL)
National Technical University of Athens (EN)

IEEE Transactions on Power Systems (EN)

1995


IEEE, Piscataway, NJ, United States (EN)



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