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首页> 外文期刊>IEEE Transactions on Energy Conversion >Coordinated Control of Networked AC/DC Microgrids With Adaptive Virtual Inertia and Governor-Gain for Stability Enhancement
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Coordinated Control of Networked AC/DC Microgrids With Adaptive Virtual Inertia and Governor-Gain for Stability Enhancement

机译：具有自适应虚拟惯性和稳定性增强的网络交流/直流微电网的协调控制

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摘要

This article proposes an adaptive coordinated control strategy for the networked AC/DC microgrids (MGs) to enhance the frequency and dc voltage stability of the system while keeping proper power sharing. First, a control strategy based on the synchronverter and virtual dc machine (VDCM) for the converters connecting the AC and DC MGs is proposed, which is consisted of an adaptive virtual governor and an adaptive virtual inertia regulator besides the power sharing controller. Following, in order to enhance the system stability performance, the parameter design approach of the adaptive virtual inertia and virtual governor-gain is proposed accordingly, in which the adaptive virtual inertia and virtual governor-gain are comprehensively determined by the frequency and/or dc voltage, virtual rotor speed, and rate of change of the frequency (ROCOF) and/or dc voltage (ROCOV). After that, the small-signal stability analysis of the networked AC/DC MGs with the proposed control strategy is investigated to guide the design and selection of control parameters. Finally, simulation and experimental results demonstrate that the proposed method improves the frequency/dc voltage nadir and dynamic performance of the system.
机译：本文提出了网络交流/直流微电网（MGS）的自适应协调控制策略，以增强系统的频率和直流电压稳定性，同时保持适当的电力共享。首先，提出了一种基于连接AC和DC MGS的转换器的同步转换器和虚拟DC机（VDCM）的控制策略，其包括除了电力共享控制器之外的自适应虚拟调速器和自适应虚拟惯性调节器。以下是为了提高系统稳定性性能，因此提出了自适应虚拟惯性和虚拟调速器增益的参数设计方法，其中自适应虚拟惯性和虚拟调速器 - 增益由频率和/或直流全面地确定电压，虚拟转子速度和频率（Rocof）和/或DC电压（Rocov）的变化率。之后，研究了具有所提出的控制策略的网络交流/直流MGS的小信号稳定性分析，以指导控制参数的设计和选择。最后，模拟和实验结果表明，该方法提高了系统的频率/直流电压Nadir和系统的动态性能。

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