| Title |
A Fast Screening Algorithm for On-Line Transient Stability Assessment |
| Authors |
이종석(Lee, Jong-Seock) ; 양정대(Yang, Jung-Dae) ; 이병준(Lee, Byong-Jun) ; 권세혁(Kwon, Sae-Hyuk) ; 남해곤(Nam, Hae-Kon) ; 추진부(Choo, Jin-Boo) ; 이경극(Lee, Koung-Guk) ; 윤상현(Yun, Sang-Hyun) ; 박병철(Park, Byung-Cheol) |
| Keywords |
Transient stability assessment ; Dynamic security assessment ; Contingency screening ; SIME(SIngle Machine Equivalent) ; PASF(Power-Angle Shape Filtering) |
| Abstract |
SIME(SIngle Machine Equivalent) method has been recognized as a useful tool to determine transient stability of power systems. In this paper, SIME method is used to develop the KEPCO transient stability assessment (TSA) tool. A new screening algorithm that can be implemented in SIME method is proposed. The salient feature of the proposed screening algorithm is as follows. First, critical generators are identified by a new index in the early stage of the time domain simulation. Thus, computational time required to find OMIB(One Machine Infinite Bus) can be reduced significantly. Second, clustering critical machines can be performed even in very stable cases. It enables to be avoid extra calculation of time trajectory that is needed in SIME for classifying the stable cases. Finally, using power-angle trajectory and subdividing contingency classification have improved the screening capability. This algorithm is applied to the fast TSA of the KEPCO system. |