Hybrid EMT and Phasor based MMC-HVDC Model for Advanced Power System Simulation

2022 IEEE Power & Energy Society General Meeting (PESGM) Pub Date : 2022-07-17 DOI:10.1109/PESGM48719.2022.9917109

A. Raab, Dominik Frauenknecht, M. Luther, Ananya Kuri, Anatoli Wellhoefer

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引用次数: 1

Abstract

The objective of this paper is the implementation and comparison of a hybrid phasor-based (RMS) and electromagnetic transient (EMT) modular multilevel converter high voltage direct current (MMC-HVDC) model for advanced and detailed studies of large power systems. The general modeling approach for hybrid simulation of modular multilevel converters for HVDC applications with the corresponding control concepts is described. The HVDC model can be divided into AC and DC components with different simulation time steps and representation using network partitioning. The connected AC grids and converter models are considered in the phasor-based time domain, while the DC connection is simulated in the electromagnetic-transient time domain. The coupling of the models is established by the total energy control of the MMC. The hybrid approach is evaluated in comparison to an average MMC HVDC model in an EMT simulation. The results show the advantages of the hybrid model. The model can be simulated with comparatively low computational effort, while the DC transients can be represented in detail during disturbances.

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基于EMT和相量的MMC-HVDC混合模型的高级电力系统仿真

本文的目的是实现和比较基于混合相量的(RMS)和电磁暂态(EMT)模块化多电平变换器高压直流(MMC-HVDC)模型，用于大型电力系统的高级和详细研究。介绍了高压直流应用中模块化多电平变换器混合仿真的一般建模方法和相应的控制概念。HVDC模型可分为交流和直流两部分，采用不同的仿真时间步长和网络分区表示。在基于相量的时域中考虑连接的交流电网和变换器模型，而在电磁暂态时域中对直流连接进行仿真。模型的耦合是通过MMC的总能量控制来实现的。在EMT仿真中，将混合方法与平均MMC HVDC模型进行了比较。结果表明了混合模型的优越性。该模型可以用较低的计算量进行模拟，并且可以详细地表示干扰下的直流瞬态。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2022 IEEE Power & Energy Society General Meeting (PESGM)

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