Title :
An extended energy function for voltage and transient stability analysis considering voltage dependent active loads
Author :
Guedes, R.B.L. ; Silva, F. H J R ; Alberto, L.F.C. ; Bretas, N.G.
Author_Institution :
Univ. of Sao Paulo, Sao Carlos
Abstract :
The main concern of this paper is the proposal of extended Lyapunov function (ELF) for power system model that does not have Lyapunov function in the usual sense. The proposed ELF is used in angle and voltage stability analysis purposes considering the system loads modeled as voltage dependent terms. The proposed energy function was applied on a 3-bus test system. The results show that the proposed function can be used to obtain good estimates of the critical clearing time.
Keywords :
Lyapunov methods; power system simulation; power system transient stability; voltage control; 3-bus test system; extended Lyapunov function; extended energy function; power system model; transient stability analysis; voltage dependent active loads; voltage stability analysis; Geophysical measurement techniques; Ground penetrating radar; Lyapunov method; Power system analysis computing; Power system modeling; Power system transients; Proposals; Stability analysis; Transient analysis; Voltage; Voltage collapse; direct methods; energy function; structure preserving model; transient stability; voltage dependent load model;
Conference_Titel :
Power Tech, 2005 IEEE Russia
Conference_Location :
St. Petersburg
Print_ISBN :
978-5-93208-034-4
Electronic_ISBN :
978-5-93208-034-4
DOI :
10.1109/PTC.2005.4524629
