Title :
The dynamics of system voltage instability
Author :
Lachs, W.R. ; Sutanto, D.
Author_Institution :
Sch. of Electr. Eng., New South Wales Univ., Sydney, NSW, Australia
Abstract :
A method of simulating the post-disturbance dynamics of system voltage instability has been developed in which both the slow and fast phases, reported in incidents, have been replicated by a series of load flows. An analysis of the simulation has shown that changes of voltages and reactive power outputs can not only identify a critical situation but also delineate the affected locality where measures could most usefully be applied. The simulation has unearthed the core problems that must be overcome, the unsustainable increase in transmission line series reactive power losses and the subsequent action of rotor overcurrent protection
Keywords :
load flow; losses; machine protection; overcurrent protection; power system analysis computing; power system stability; power transmission lines; reactive power; rotors; fast phases; load flows; post-disturbance dynamics simulation; reactive power outputs; rotor overcurrent protection; slow phases; system voltage instability; transmission line series reactive power losses; voltage outputs; Circuit faults; Power system measurements; Power system planning; Power system protection; Power system simulation; Power system stability; Power transmission lines; Reactive power; Transmission line measurements; Voltage;
Conference_Titel :
Energy Management and Power Delivery, 1995. Proceedings of EMPD '95., 1995 International Conference on
Print_ISBN :
0-7803-2981-3
DOI :
10.1109/EMPD.1995.500748
