Title :
Assessment and control of power system global stability determined by unstable limit cycle
Author :
Watanabe, Masayuki ; Miao, Peiyun ; Mitani, Yasunori ; Tsuji, Kiichiro
Author_Institution :
Graduate Sch. of Eng., Osaka Univ., Japan
Abstract :
This paper presents a method to investigate the power system global stability formed by an unstable limit cycle, which can be calculated by means of Hopf bifurcation theory. The stability region is evaluated in the δ-ω phase plane including the effect of field winding flux change. The global stability is assessed in comparison with the conventional transient stability. A control strategy to keep the system trajectory inside of globally stable region after a large disturbance by controlling the field voltage is developed from the results
Keywords :
bifurcation; machine windings; magnetic flux; nonlinear systems; power system control; power system stability; δ-ω phase plane; Hopf bifurcation; control strategy; excitation control; field voltage control; field winding flux change; generator swing data; globally stable region; large disturbance; nonlinear system; power system global stability assessment; power system global stability control; stability region; unstable limit cycle; Bifurcation; Control systems; Limit-cycles; Nonlinear equations; Power system control; Power system stability; Power system transients; Power systems; Stability analysis; Voltage control;
Conference_Titel :
Power Tech Proceedings, 2001 IEEE Porto
Conference_Location :
Porto
Print_ISBN :
0-7803-7139-9
DOI :
10.1109/PTC.2001.964717
