...投影能量函数；最小投影动能；临界切除时间 [gap=1027]Key words: electric power system and automation; transient stability; projection energy function; minimum projection kinetic energy; critical clearing time ..
Thetransformis characterized by optimumsparsenessconstraintcondition that makes the mappingenergyof primary reflections onasetof basisfunction as small as possible.