Dynamic Model of a Virtual Air Gap Reactor

被引:2
|
作者
Sevsek, David [1 ]
Hinkkanen, Marko [1 ]
Kukkola, Jarno [1 ]
Lehtonen, Matti [1 ]
机构
[1] Aalto Univ, Dept Elect Engn & Automat, Espoo 02150, Finland
关键词
Dynamic model; finite element method (FEM); variable reactor; virtual air gap (VAG);
D O I
10.1109/TPWRD.2023.3245123
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Variable reactors have been a vital component of power networks for decades, where they have been used as fault-current limiting devices or for reactive power compensation. Traditionally, modifying the inductance of predominantly mechanically operated variable reactors requires seconds to minutes. In contrast, virtual air gap (VAG) reactors can change the inductance within milliseconds, potentially improving power system stability. Existing dynamic models of VAG reactors cannot capture the entire system dynamics, limiting their applicability for simulations in the time-domain. This research presents two dynamic VAG reactor models, one with and one without core losses. The models capture all significant system dynamics using electromagnetic principles and VAG reactor flux linkage behavior. The proposed models were experimentally validated using a small VAG reactor. Over a broad operating range, both models accurately reproduce the dynamic behavior, transient response, and dominant harmonics of the small VAG reactor. Consequently, the models may be used for a variety of applications, such as time-domain simulations, harmonic analysis, and the development of suitable controllers for VAG reactors. In addition, engineers may use the core loss omitting model as a VAG reactor design tool, as the actual reactor is not required for modeling.
引用
收藏
页码:2521 / 2530
页数:10
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