가변구조 안정화 장치를 이용한 전력계통 안정화에 관한 연구 = A study on power system stabilization using Variable Structure Stabilizer

다국어 초록 (Multilingual Abstract)

This paper proposes a new technique for power system stabilization using the variable structure control theory. In order to reduce the undesirable effects and improve the system dynamic performance, eigenvalue allocation variable structure stabilizer is composed by the determination of switching logic which maintains the system stability under the sliding mode. The selection problem of the proper switching vector is selected by desired eigenvalue allocation, and these desired eigenvalues are determined by the eigenvalue assignment. Switching gains are also considered within conditions for existence of a sliding plane. This stabilizer is applied to the one machine infinite bus model system, its dynamic response characteristics is obtained by digital computer simulation. Simulation results show that eigenvalue allocation variable structure stabilizer yields better dynamic performance than the others (conventional PSS, optimal linear stabilizer) and is robust to wide variations of the system parameters.