Group-based BCU methods for on-line dynamical security assessments and energy margin calculations of practical power systems

摘要

This invention relates to a method of determining stability of unstable equilibrium point (UEP) computed by using BCU method, comprising selecting UEP computed by using BCU method, obtaining a test vector X test for the selected UEP, say X UEP using the following equation:
where
is the SEP, and checking boundary condition of X UEP by simulating system trajectory of post-fault original system starting from X test .