Title :
Analysis of tap-changer dynamics and construction of voltage stability regions
Author :
Vu, Khoi T. ; Liu, Chen-Ching
Author_Institution :
Dept. of Electr. Eng., Washington Univ., WA, USA
Abstract :
The destabilizing behavior of on-load tap-changers is an important mechanism responsible for the voltage collapse of power systems. The authors use a nonlinear dynamic model of the tap-changer, impedance loads, and decoupled reactive power-voltage relations to reconstruct the collapse. Based on the proposed M-bus network model, results presented include (1) a criterion for voltage stability, (2) a method to obtain a voltage region, and (3) qualitative characterizations of the equilibria.<>
Keywords :
modelling; nonlinear control systems; power system control; reactive power; stability criteria; M-bus network model; decoupled reactive power-voltage relations; impedance loads; nonlinear dynamic model; on-load tap-changers; voltage collapse; voltage stability regions; Equations; Impedance; Power system analysis computing; Power system dynamics; Power system interconnection; Power system modeling; Power system stability; Stability analysis; Stability criteria; Voltage;
Conference_Titel :
Circuits and Systems, 1988., IEEE International Symposium on
Conference_Location :
Espoo, Finland
DOI :
10.1109/ISCAS.1988.15242
