Title :
On mechanism of voltage instability in power systems
Author_Institution :
Siberian Energy Inst., Irkutsk
Abstract :
The phenomenon of voltage instability and collapse is considered as a manifestation of steady state instability. The behaviour of a simple power system at unstable equilibrium point with different portions of induction motor load is analyzed in the torque-slip plane of induction motor with time scale decomposition of the system equations into fast and slow subsystems. A novel model of a power system dynamics is used with effects of system frequency variations included into the right sides of system state space equations.
Keywords :
induction motors; stability; induction motor load; power systems; steady state instability; system frequency variations; time scale decomposition; torque-slip plane; unstable equilibrium point; voltage instability; Differential equations; Frequency; Induction motors; Power system analysis computing; Power system dynamics; Power system modeling; Power systems; State-space methods; Steady-state; Voltage; power system modelling; steady state stability; voltage collapse;
Conference_Titel :
Power Tech, 2005 IEEE Russia
Conference_Location :
St. Petersburg
Print_ISBN :
978-5-93208-034-4
Electronic_ISBN :
978-5-93208-034-4
DOI :
10.1109/PTC.2005.4524766
