Voltage stability and controllability indices for multimachine power systems

see the original item page
in the repository's web site and access all digital files if the item*

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)


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)


IEEE, Piscataway, NJ, United States (EN)

*Institutions are responsible for keeping their URLs functional (digital file, item page in repository site)