Open AccessLyapunov Analysis of Two Imbalanced Power System Areas
Author(s) -
Gilang Nugraha Putu Pratama,
Adha Imam Cahyadi
Publication year - 2021
Publication title -
ecti transactions on electrical eng. / electronics and communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.148
H-Index - 7
ISSN - 1685-9545
DOI - 10.37936/ecti-eec.2021193.242123
Subject(s) - synchronism , fault (geology) , control theory (sociology) , transient (computer programming) , lyapunov function , electric power system , admittance parameters , admittance , nonlinear system , stability (learning theory) , computer science , power (physics) , engineering , voltage , physics , computer network , control (management) , asynchronous communication , electrical impedance , quantum mechanics , artificial intelligence , seismology , machine learning , electrical engineering , geology , operating system
The transient stability is the capability of the system to preserve synchronism while being affected by large disturbances. It is a nonlinear problem that requires a simultaneous solution for many differential equations. Therefore, a thorough analysis is needed to resolve it. In this paper, we present the transient stability for multimachine under different fault cases and to analyze using the Lyapunov function. It serves as an analytical tool to determine the necessary condition to be stable. The system is stable as long as it is contained in the region of attraction. Meanwhile, the swing equation and reduced admittance matrix are used to model the system in three conditions, pre-fault, during the fault, and post-fault. The numerical simulations are conducted to verify that the synchronism can be preserved despite under faults on the transmission lines by achieving the critical clearing time.