Author:
Ji Yuxi,He Wei,Cheng Shijie,Kurths Jürgen,Zhan Meng
Abstract
AbstractPower flow studies in traditional power systems aim to uncover the stationary relationship between voltage amplitude and phase and active and reactive powers; they are important for both stationary and dynamic power system analysis. With the increasing penetration of large-scale power electronics devices including renewable generations interfaced with converters, the power systems become gradually power-electronics-dominant and correspondingly their dynamical behavior changes substantially. Due to the fast dynamics of converters, such as AC current controller, the quasi-stationary state approximation, which has been widely used in power systems, is no longer appropriate and should be reexamined. In this paper, for a better description of network characteristics, we develop a novel concept of dynamic power flow and uncover an explicit dynamic relation between the instantaneous powers and the voltage vectors. This mathematical relation has been well verified by simulations on transient analysis of a small power-electronics-based power system, and a small-signal frequency-domain stability analysis of a voltage source converter connected to an infinitely strong bus. These results demonstrate the applicability of the proposed method and shed an improved light on our understanding of power-electronics-dominant power systems, whose dynamical nature remains obscure.
Publisher
Springer Science and Business Media LLC
Reference45 articles.
1. Yuan, X., Jiabing, H. & Cheng, S. Multi-time scale dynamics in power electronics-dominated power systems. Frontiers of Mechanical Engineering 12(3), 303–311 (2017).
2. Adams, J., Pappu, V. A., & Dixit, A. Ercot experience screening for Sub-Synchronous Control Interaction in the vicinity of series capacitor banks. 2012 IEEE Power and Energy Society General Meeting, San Diego, CA. 1–5 (2012).
3. Kundur, P., Balu, N. J. & Lauby, M. G., Power system stability and control (McGraw-hill, 1994).
4. Bergen, A. R., Power systems analysis. (Pearson Education, 2009).
5. He,Y. & Wen, Z. Power System Analysis (Part 2). (Huazhong University of Science and Technology).(in Chinese), 1985
Cited by
17 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献