Title :
Voltage collapse precipitated by the immediate change in stability when generator reactive power limits are encountered
Author :
Dobson, Ian ; Lu, Liming
Author_Institution :
Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA
fDate :
9/1/1992 12:00:00 AM
Abstract :
When a generator of a heavily loaded electric power system reaches a reactive power limit, the system can become immediately unstable and a dynamic voltage collapse leading to blackout may follow. The statics and dynamics of this mechanism for voltage collapse are studied by example and by the generic theory of saddle node and transcritical bifurcations. It is shown that load power margin calculations can be misleading if the immediate instability phenomenon is neglected
Keywords :
power system stability; blackout; change in stability; dynamic voltage collapse; generator reactive power limits; heavily loaded electric power system; immediate instability phenomenon; load power margin calculations; saddle node; transcritical bifurcations; voltage collapse precipitation; Bifurcation; Linear matrix inequalities; Power generation; Power system analysis computing; Power system dynamics; Power system measurements; Power system modeling; Power system stability; Reactive power; Voltage;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
