Open AccessInfluence of solid oxide fuel cell on power system transient stability
Author(s) -
Liu Jun,
Su Can,
Wang Chao,
Zhu Longyang,
He Jian
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.8511
Subject(s) - transient (computer programming) , solid oxide fuel cell , electric power system , modular design , power (physics) , transient response , voltage , control theory (sociology) , stability (learning theory) , computer science , materials science , engineering , electrical engineering , control (management) , anode , electrode , chemistry , physics , quantum mechanics , artificial intelligence , machine learning , operating system
Due to its modular, efficient and non‐polluting characteristics, solid oxide fuel cell (SOFC) is promising to be widely utilised in the area of distributed generation. Previous studies mainly focused on dynamic modelling of SOFC to analyse its load following behaviour, however, the influence of SOFC on power system transient stability is not yet clear and needs further discussion. In this study, a system‐level electromechanical transient mathematical model for SOFC is proposed, based on the circuit structure of SOFC, DC/DC step‐up converter and DC/AC converter. Then, a double closed‐loop control scheme is designed for the control of SOFC. Finally, the effect of SOFC on the power system's transient stability is discussed through simulations based on IEEE 3‐machine 9‐bus standard system. Results show that, under real and reactive power coordinated control strategy, cell current can be adjusted. Therefore, the output power of SOFC can be modulated to help with voltage recovery and power angle stability. The authors’ work reveals the feasibility of using SOFC to enhance power system transient stability.