Title :
A new transient stability index of power systems based on theory of stability region and its applications
Author :
Xue, Ancheng ; Shen, Chen ; MEI, Shengwei ; Ni, Yixin ; Wu, Felix F. ; Lu, Qiang
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing
Abstract :
This paper presents a new transient stability index based on the implicit expression of the stability region of the power system related to the controlling unstable equilibrium point, and then gives out an estimation of the index with the quadratic approximation of stability region. Two applications of the proposed index, calculating the critical clearing time (CCT) incorporating the curve fitting approach and contingency ranking are discussed. Simulations in IEEE 3-machine 9-bus system and 10-machine 39-bus New England system show the effectiveness of the proposed index
Keywords :
approximation theory; curve fitting; power system transient stability; 10-machine 39-bus New England system; IEEE 3-machine 9-bus system New England system; contingency ranking; critical clearing time; curve fitting approach; power systems stability region; quadratic approximation; transient stability index; unstable equilibrium point; Control systems; Curve fitting; Hybrid power systems; Performance evaluation; Power system analysis computing; Power system simulation; Power system stability; Power system transients; Power systems; Stability analysis; Contingency ranking; Critical Clearing Time; Direct Method; Quadratic Approximation; Stability Region; Transient Stability Index;
Conference_Titel :
Power Engineering Society General Meeting, 2006. IEEE
Conference_Location :
Montreal, Que.
Print_ISBN :
1-4244-0493-2
DOI :
10.1109/PES.2006.1709079
