A NOVEL APPROACH FOR TRANSIENT STABILITY EMERGENCY CONTROL BASED ON PERTURBED TRAJECTORY
Peng Jiangnan, Sun Yuanzhang, Cheng Lin(Tsinghua University, Beijing 100084, China)
This paper proposed a new scheme of power system emergency control based on actual system trajectory via real-time wide area measurement system. An emergency control model of power system is established and EEAC is used to decompose and simplify the whole large system into low order small system based on practical physical dynamics. Then a novel TEF is constructed from the equivalent simplified system using general Hamilton system theory to fast assess transient stability and quantitatively determine emergency control strategy. Also an integrated security and economic index is constructed to decide which generators to be shed. The technique is tested by test systems and the results indicate its feasibility and effectiveness.