Title :
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
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;
Journal_Title :
Power Systems, IEEE Transactions on
DOI :
10.1109/TPWRS.2014.2342494
