Influence of solid oxide fuel cell on power system transient stability. Issue 16 (6th December 2018)

• Record Type: Journal Article
• Authors: Liu, Jun; Su, Can; Wang, Chao; Zhu, Longyang; He, Jian
• Is Part Of: Journal of engineering. Volume 2019:Issue 16(2019)
• Page Start: 1081
• Page End: 1086
• Publication Date: 2018-12-06
• Subjects: closed loop systems -- power system simulation -- power system interconnection -- power system transient stability -- reactive power control -- solid oxide fuel cells -- distributed power generation -- DC‐DC power convertors -- power system faults -- power grids -- voltage control -- DC‐AC power convertors -- power system stability -- power generation control -- power system control -- control system synthesis; SOFC -- DC/DC step‐up converter -- IEEE 3‐machine 9‐bus standard system -- reactive power coordinated control strategy -- power angle stability -- power system transient stability -- solid oxide fuel cell -- system‐level electromechanical transient mathematical model -- double closed‐loop control -- voltage recovery; Engineering -- Periodicals; Engineering; Electronic journals; Periodicals; 620.005
• DOI: 10.1049/joe.2018.8511
• Languages: English
• ISSNs: 2051-3305

Abstract

Abstract : 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.