在基于MMC的MTDC系统中避免交直流网格交互

2017 Twelfth International Conference on Ecological Vehicles and Renewable Energies (EVER) Pub Date : 2017-04-01 DOI:10.1109/EVER.2017.7935937

A. G. Endegnanew, Gilbert Bergna-Diaz, K. Uhlen

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引用次数: 5

摘要

本文研究了两种MMC控制结构中交直流电网之间的相互作用;常规和非常规控制结构。采用基于模态振型和参与因子的线性分析方法来识别交直流混合电力系统的动态相互作用。该分析采用基于三端模块化多电平变换器(MMC)的多端高压直流(MTDC)电网连接三台多机异步交流电网作为测试系统。结果表明，在常规MMC变换器控制结构下，交直流电网之间存在一定的动态相互作用，而非常规MMC变换器控制结构将MMC变换器的交直流侧解耦，从而避免了交直流电网之间的相互作用。

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Avoiding AC/DC grid interaction in MMC based MTDC systems

In this paper, the interaction between ac and dc grids is studied for two types of MMC control structures; conventional and non-conventional control structures. Linear analysis methods that are based mode shapes and participation factors are used to identify dynamic interaction in a hybrid ac-dc power system. The analysis uses as a test system a three terminal Modular Multilevel Converter (MMC) based Multi-terminal High Voltage DC (MTDC) grid connecting three multi-machine asynchronous ac grids. The results show that there is some dynamic interaction between ac and dc grids under conventional MMC converter control structure, while the non-conventional MMC converter control structure decouples the ac and dc side of the MMC converter, thus avoiding interaction between the ac and dc grids.

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来源期刊

2017 Twelfth International Conference on Ecological Vehicles and Renewable Energies (EVER)

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