TY - JOUR A2 - Gao, Zhiwei AU - Che, Yanbo AU - Lv, Zihan AU - Xu, Jianmei AU - Jia, Jingjing AU - Li, Ming PY - 2020 DA - 2020/01/04 TI - Direct Method-Based Transient Stability Analysis for Power Electronics-Dominated Power Systems SP - 4295094 VL - 2020 AB - With the extensive application of power electronics interfaced nonsynchronous energy sources (NESs) in modern power systems, the system stability especially the transient stability is prominently deteriorated, and it is crucial to find a comprehensive and reasonably simple solution. This paper proposes a direct method-based transient stability analysis (DMTSA) method which concludes the key steps as follows: (1) the system modeling of Lyapunov functions using mixed potential function theory and (2) the stability evaluation of critical energy estimation. A voltage source converter- (VSC-) based HVDC transmission system is simulated in a weak power grid to validate the proposed DMTSA method under various disturbances. The simulation results verify that the proposed method can effectively estimate the transient stability with significant simplicity and generality, which is practically useful to secure the operation and control for power electronics-dominated power systems. SN - 1024-123X UR - https://doi.org/10.1155/2020/4295094 DO - 10.1155/2020/4295094 JF - Mathematical Problems in Engineering PB - Hindawi KW - ER -