Small-Signal Stability Analysis of the Interactions Between Voltage Source Converters and DC Current Flow Controllers
Small-Signal Stability Analysis of the Interactions Between Voltage Source Converters and DC Current Flow Controllers
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DOI：
10.1109/oajpe.2019.2930897
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发表时间：
2020-12
影响因子：
3.8
通讯作者：
Rui Guan;N. Deng;Ying Xue;Xiao-Ping Zhang
中科院分区：
文献类型：
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作者：
Rui Guan;N. Deng;Ying Xue;Xiao-Ping Zhang
基于电压源换流器（VSC）的多端直流（MTDC）电网的小信号稳定性分析主要集中在AC/DC变换器的动态特性上，而缺乏考虑直流网络的直流潮流控制。本文建立了一个完整的小信号模型，研究VSC和直流电流控制器（CFC）之间的相互作用。通过特征值分析，讨论了CFC控制系统对系统小干扰稳定性的影响以及VSC控制系统对含CFC直流网络的影响。以上的相互作用，证明通过动态模拟对小和大的干扰，使用真实的时间数字仿真器（RTDS）。
Small-signal stability analysis of the voltage source converter (VSC) based multi-terminal DC (MTDC) grids has been mainly focused on the dynamics of AC/DC converters while there is a lack of consideration of DC networks with DC power-flow controllers. In this paper, an integrated small-signal model is established to investigate the interactions between VSC and DC current flow controllers (CFC). The impacts of the control system of CFC on small-signal stability of the integrated system and the impacts of the control system of VSC on the DC networks with CFC are discussed via eigenvalue analysis. The above interactions are demonstrated through dynamic simulations against both small and large disturbances using real time digital simulator (RTDS).