Coordination of Resistive SFCL and Additional Power Controller for Transient Stability Enhancement of Virtual Synchronous Generator

被引:8
|
作者
Xu, Hanping [1 ]
Zhang, Dongyin [1 ]
Chen, Lei [2 ]
Li, Yaxin [1 ]
Wang, Yicong [1 ]
Hu, Ting [1 ]
Qiao, Li [1 ]
Wei, Cong [1 ]
机构
[1] State Grid Hubei Elect Power Co Ltd, Econ Res Inst, Wuhan 430077, Hubei, Peoples R China
[2] Wuhan Univ, Sch Elect Engn & Automat, Wuhan 430072, Hubei, Peoples R China
关键词
Additional power controller; extended equal area criterion; superconducting fault current limiter; transient angle stability; virtual synchronous generator; ANGLE STABILITY; IMPROVEMENT; FREQUENCY;
D O I
10.1109/TASC.2021.3091093
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
Virtual synchronous generator (VSG) techniques are friendly applied in inverter interfaced renewable energy sources (IIRESs), and that enables to recover the rotor inertia and provide the damping support. However, the VSG generally owns weak over-current ability, and its transient angle stability (TAS) under faults may be destroyed. For solving the issue, This paper puts forward a coordination method of a resistive superconducting fault current limiter (SFCL) and an additional power controller (APC). The relevant mathematical model is built, and the TAS is probed based on the extended equal area criterion (EEAC). In the coordination philosophy, the SFCL represses the fault current and prevents the disconnection of the VSG, and thereupon the designed APC is to actively adjust the VSG's power reference and positively reduce the acceleration of the virtual rotor. It is aimed to fully realize the transient power balance, and the change of the virtual rotor angle can be mitigated. Furthermore, the MATLAB platform is adopted to create a simulation model. Multiple fault scenarios are simulated, and the findings certify the efficacy and superiority of the proposed approach. The VSG successfully rides through the serious and moderate faults, and meanwhile, its transient angle stability is visibly increased.
引用
收藏
页数:6
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