Title :
Lyapunov function for robust voltage stability analysis considering perturbation location
Author :
Halim, Abdul ; Takahashi, Kazuhiro ; Kermanshahi, Bahman
Author_Institution :
Central Res. Inst. of Electr. Power Ind., Tokyo, Japan
Abstract :
In this paper, a method to analyze the small-perturbation voltage stability of power systems with varying load by means of the quadratic Lyapunov function is presented. By using the quadratic Lyapunov function, the voltage stability is analyzed algebraically as a result of this analysis, and a voltage stability index is proposed. Numerical tests are carried out on a 3-bus system and a single machine to verify the performance of these indices as well as verification of computation bound of varying ratio of reactive power and voltage from its operating condition which force the system to maintain its stability. In this paper, by considering the location of uncertainties in the Jacobian matrix, a robust stability analysis is also presented
Keywords :
Jacobian matrices; Lyapunov methods; control system analysis; power system control; power system dynamic stability; robust control; voltage control; Jacobian matrix uncertainties; computation bound; perturbation location; power system robust voltage stability analysis; quadratic Lyapunov function; small-perturbation voltage stability; voltage stability index; Jacobian matrices; Lyapunov method; Power system analysis computing; Power system stability; Reactive power; Robust stability; Stability analysis; System testing; Uncertainty; Voltage;
Conference_Titel :
Power System Technology, 1998. Proceedings. POWERCON '98. 1998 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4754-4
DOI :
10.1109/ICPST.1998.729339
