当前位置: X-MOL 学术IEEE J. Emerg. Sel. Top. Power Electron. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Dynamic Modeling of Asymmetrical-Faulted Grid by Decomposing Coupled Sequences via Complex Vector
IEEE Journal of Emerging and Selected Topics in Power Electronics ( IF 5.5 ) Pub Date : 2020-07-22 , DOI: 10.1109/jestpe.2020.3011371
Bo Wang , Sicheng Wang , Jiabing Hu

To study the electromagnetic dynamics of grid-connected voltage source converter (VSC)-based devices during asymmetrical grid fault ride-through, this article presents a generic dynamic modeling method for asymmetrical-faulted power grids. In the generic case, the asymmetrical impedances and the grounding inside a faulted grid introduce complicated couplings among the harmonic-contained sequence components. By employing complex vectors, the dynamics of each sequence, especially that of zero sequence, can be depicted clearly and the complicated couplings can be decomposed. With dynamic composite sequence networks figured out, the characteristics of asymmetrical-faulted grids can be studied further. The presented modeling approach is validated by simulation, and its effectiveness is demonstrated by a case study of small-signal stability analysis for an exemplified grid-connected VSC injecting positive and negative sequence reactive currents to the faulted grid.

中文翻译:

通过复杂向量分解耦合序列的不对称断层网格动态建模

为了研究基于电网连接的电压源换流器(VSC)的设备在非对称电网故障穿越期间的电磁动力学,本文提出了一种用于非对称故障电网的通用动态建模方法。在一般情况下,故障电网内部的不对称阻抗和接地会在包含谐波的序列分量之间引入复杂的耦合。通过使用复杂的向量,可以清楚地描述每个序列的动力学,尤其是零序列的动力学,并且可以分解复杂的耦合。借助动态复合序列网络,可以进一步研究非对称故障网格的特性。所提出的建模方法已通过仿真验证,
更新日期:2020-07-22
down
wechat
bug