Inertial Support by Virtual Synchronous Machine Control of a MMC-based VSC HVDC Link

The 17th International Conference on AC and DC Power Transmission (ACDC 2021) Pub Date : 1900-01-01 DOI:10.1049/icp.2021.2458

F. Puricelli, A. Agbemuko, J. Beerten

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引用次数: 2

Abstract

The transition towards converter-interfaced generation replacing synchronous units is causing concerns over the frequency stability of the power system. Control strategies, recreating synchronous machines stabilising effects, can be implemented in static converters to provide an inertial response after a disturbance. This paper assesses the inertial support that can be supplied by Modular Multilevel Converters (MMCs) with a Virtual Synchronous Machine (VSM) control strategy in a Voltage Source Converter (VSC) High-Voltage Direct Current (HVDC) point-to-point link. To evaluate the inertial support and the resulting influence on the ac grid dynamics, the active power flowing in the link, the rate of change of frequency, and the frequency nadir of the ac grid are analysed. A time-domain sensitivity analysis is carried to show the effect of the VSM parameters on the power, frequency support and impact of converter saturation limits. The results demonstrate an improvement in the frequency behaviour of the ac grid dependent on the selection of the VSM parameters.

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基于mmc的VSC高压直流链路虚拟同步机控制的惯性支持

以变流器接口发电取代同步发电引起了人们对电力系统频率稳定性的担忧。控制策略，重建同步电机的稳定效果，可以在静态变流器中实现，以提供扰动后的惯性响应。本文对电压源变换器(VSC)高压直流(HVDC)点对点链路中采用虚拟同步机(VSM)控制策略的模块化多电平变换器(MMCs)所能提供的惯性支持进行了评估。为了评估惯性支撑及其对交流电网动力学的影响，分析了交流电网的有功功率流、频率变化率和频率最低点。时域灵敏度分析显示了VSM参数对功率、频率支持度和变换器饱和极限的影响。结果表明，交流电网频率特性的改善取决于VSM参数的选择。

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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The 17th International Conference on AC and DC Power Transmission (ACDC 2021)

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