Open AccessImproved active power control of virtual synchronous generator for enhancing transient stability
Author(s) -
Li Kongyuan,
Cheng Peng,
Wang Letian,
Tian Xinshou,
Ma Jing,
Jia Limin
Publication year - 2022
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/pel2.12371
Subject(s) - transient (computer programming) , control theory (sociology) , integrator , ac power , converters , transient response , stability (learning theory) , computer science , power (physics) , engineering , physics , control (management) , telecommunications , artificial intelligence , quantum mechanics , machine learning , operating system , bandwidth (computing) , electrical engineering
Virtual synchronous generators (VSGs) are widely used as grid‐forming control converters in the inverter‐dominated power system. Similar to synchronous generators (SGs), there would also be transient instability of VSGs under certain conditions. In this paper, the transient dynamics of VSGs during gird faults are fully investigated based on the large‐signal model. It is revealed that the significant deteriorative of active power control loop (APCL) is the main factor on the transient stability of VSGs. Thus, for enhancing transient stability during grid faults, an integrator‐based feedback loop is introduced for APCL. Then, an enhanced active power control of VSGs is presented with transient stability enhancement during grid faults. Moreover, the impacts of different integral parameters on the transient stability of VSGs are studied. Finally, the validity of the transient stability enhancement of VSGs is demonstrated by the hardware‐in‐loop (HIL) results.