Russian Far East interconnected power system emergency stability control

Abstract

Conventional angle stability controls do not always meet the power consumers' requirements. There are spread interconnected power systems where application of generator tripping for stability improvement is accompanied by load tripping to counterbalance the effect of tripping the generators. This resume discusses a concept having potentialities for advanced stability control for such power systems. The concept is based on unconventional combining of centralized and decentralized control. That would be possible if to make use of repeated-several-times dynamic braking and repeated-several-times fast valving to maintain synchronism within several seconds following an emergency. Those seconds could be used to predict the process evolution applying a software for power system dynamics simulation to determine indispensable control actions for keeping stability in post-emergency state.