控制理论(社会学)
瞬态(计算机编程)
转换器
电压
工程类
计算机科学
电气工程
控制(管理)
操作系统
人工智能
作者
Ebrahim Rokrok,Taoufik Qoria,Antoine Bruyère,François Bart,Xavier Guillaud
出处
期刊:IEEE Transactions on Power Systems
[Institute of Electrical and Electronics Engineers]
日期:2022-03-01
卷期号:37 (2): 1519-1531
被引量:59
标识
DOI:10.1109/tpwrs.2021.3107959
摘要
This paper deals with the transient stability of a grid-forming converter while embedding a current reference saturation strategy. The novelty of this work consists in investigating the impact of the current reference angle on the transient stability. In case of a balanced voltage sag, analytical formulas to estimate the critical clearing angle (CCA) and critical clearing time (CCT) while considering different values of the current reference angle are derived. It is demonstrated that the choice of this angle is constrained by the ability of the power converter to switch back to the voltage control mode. Based on that, its optimal value that enhances the transient stability and allows a switching from the saturated current control mode to the voltage control mode is calculated. Thereafter, the effectiveness of this optimal choice to guarantee the stability in case of a phase shift caused by a line re-closing event is verified. Time-domain simulations and experimental tests validate the correctness of the presented theoretical approaches.
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