Rapid Small-Signal Stability Assessment and Enhancement Following Changes in Topology

Author

Saric, Andrija T. ; Stankovic, Aleksandar M.

Author_Institution

Dept. for Power, Electron. & Commun. Eng., Univ. of Novi Sad, Serbia

Volume

30

Issue

3

fYear

2015

fDate

May-15

Firstpage

1155

Lastpage

1163

Abstract

The paper proposes a scalable and tractable algorithm for dynamic topology optimization of power systems involving changes in branch on/off status, while respecting small-signal stability (SSS) constraints. A procedure for fast updates of the system matrices (in descriptor form) and without additional full matrix inversions is proposed. To additionally reduce the computation time, only critical eigenvalues (right-most or those in a specified damping ratio and frequency range) are calculated. A quadratic optimization approach is proposed for optimized generation re-dispatch to satisfy SSS constraints. The approach is applied to two (medium- and large-scale) real-world test power systems.

Keywords

eigenvalues and eigenfunctions; power generation dispatch; power system dynamic stability; quadratic programming; SSS constraint satisfaction; branch on-off status; dynamic topology optimization; eigenvalues; power generation redispatch optimization; power system; quadratic optimization approach; rapid small-signal stability assessment; system matrices; Damping; Eigenvalues and eigenfunctions; Generators; Optimization; Power system dynamics; Power system stability; Topology; Eigenvalue sensitivity; load/generation re-dispatch; small-signal stability; topology change;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/TPWRS.2014.2342494

Filename

6882193