Improving the efficiency of mode automation using synchrophasor measurements to identify stability disturbance

The paper presents new approaches and principles for identifying the conditions of stability disturbance based on detecting dangerous disturbances in early stages using information about changes regime parameters their Rate Change. As a mode parameter, mutual voltage angle between controlled 500 kV substation its Change was selected study. It is suggested to take values mentioned from Wide Area Measurements System (WAMS). relevance research due need improve efficiency eliminate drawbacks existing revealing devices automatics, which will reduce number accidents power system stability. proposed principle predicting violation provision Lyapunov’s theory, according assessment carried out by total energy consisting kinetic potential. In contrast violation, where exit area determined main parameter (potential energy), prediction allows evaluating rate change (kinetic provides detection disturbance. Calculations were performed modeling surges North-South interconnection Kazakhstan Unified Energy «DigSILENT Power Factory» software model, verified real perturbations WAMS data. calculations confirmed effectiveness possibility data emergency transit networks initial stage