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中文摘要：
随着分布式电源渗透率增加,电网将逐步发展为电力电子变换器为主导的低惯量、欠阻尼网络,稳定性问题愈发严重。虚拟同步发电机(VSG)技术因其能使逆变器模拟同步发电机运行机制、有利于改善系统稳定性而成为研究热点,并具有广泛的应用前景。首先介绍了VSG的基本原理,然后从运行控制、稳定分析以及典型应用等方面分别综述了VSG技术的关键问题与研究现状,并从中提炼出后续可能的研究方向。
英文摘要：
With the increased penetration of distributed generation,the power grid will gradually develop into a converter-dominant network with low inertia and under-damped,which leads to stability problems becoming more and more serious. Virtual synchronous generator(VSG) control technologies can mimic the mechanism of synchronous generator to improve the system stability,which earns it more concern and wide application.Firstly,the architecture and principles of the virtual synchronous generator control system are described,and then some key issues about VSG modeling,operation control, stability analysis and typical application are deeply reviewed.Many potential research hot points and solutions about VSG are also proposed.
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