Title :
Stability analysis of power systems by Lyapunov´s direct method
Author :
Pai, M.A. ; Sauer, Peter W.
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA
Abstract :
The Lyapunov direct method is on the verge of being implemented for assessment of online dynamic security. The main bottleneck has been in the proper characterization of the stability boundary and defining the fault-dependent region of attraction locally around the controlling unstable equilibrium points. Now there is a better understanding of this issue, and hence, a number of algorithms have been proposed. Improved generating-unit models and transmission-network models are now being included in the technique. An overview is presented of the theory, practical implementation, and future research.<>
Keywords :
Lyapunov methods; power system analysis computing; power system control; stability; Lyapunov direct method; fault-dependent region of attraction; generating-unit models; online dynamic security; power system analysis computing; power system control; stability boundary; transmission-network models; Power generation; Power system analysis computing; Power system dynamics; Power system interconnection; Power system modeling; Power system planning; Power system security; Power system stability; Power system transients; Stability analysis;
Journal_Title :
Control Systems Magazine, IEEE
