MMC-HVDC系统振荡传播的定量分析

2023 6th International Conference on Energy, Electrical and Power Engineering (CEEPE) Pub Date : 2023-05-12 DOI:10.1109/CEEPE58418.2023.10167356

X. Zou, Qiang Li, Chenggen Wang, B. Ren

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引用次数: 0

摘要

以模块化多电平变流器(MMC)作为换流站的高压直流输电系统在工程中得到了广泛的应用。然而，当MMC与弱电网或新能源电站连接时，可能会引发宽带振荡事件。为了监测MMC-HVDC系统的振荡事件，有必要了解宽带振荡在系统中的传播。本文首先定性地分析了MMC中振荡传播的机理，然后导出了定量描述振荡传播的3x3导纳矩阵。最后，以Matlab/Simulink为例，介绍了MMC-HVDC系统振荡传播的定量分析方法。

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Quantitative Analysis of Oscillation Propagation in MMC-HVDC System

High voltage direct current (HVDC) transmission system with modular multilevel converter (MMC) as converter station has been widely used in engineering. However, when MMC is connected with weak power grid or new energy station, it may induce broadband oscillation events. It is necessary to understand the propagation of broadband oscillations in the system in order to monitor the oscillation events in MMC-HVDC system. In this paper, firstly, the mechanism of oscillation propagation in MMC is analyzed qualitatively, and then the 3x3 admittance matrix which describe oscillation propagation quantitatively is derived. Finally, the method of quantitative analysis of oscillation propagation in MMC-HVDC system is introduced with a case in Matlab/Simulink.

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2023 6th International Conference on Energy, Electrical and Power Engineering (CEEPE)

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