Transient Respond Comparison Between Modified Droop Control and Virtual Synchronous Generator in Standalone Microgrid

2019 5th International Conference on Engineering, Applied Sciences and Technology (ICEAST) Pub Date : 2019-07-01 DOI:10.1109/ICEAST.2019.8802552

D. Leng, S. Polmai

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引用次数: 4

Abstract

The inverter-based distributed generator (DG) plays a major role to solve the worldwide energy demand increasing and the environmental concern. The DG which controls by traditionally grid-connected current control confront some problems such as lacking the grid-forming ability and inertia. Therefore, the DG could not operate in standalone, and the DG's penetration rate is limited. To address these issues, the control strategy which imitates the synchronous's generator characteristic called droop control and virtual synchronous generator (VSG) are proposed recently. Seeing the potential of both control; this paper aims to investigate the dynamic performance of modified droop control and VSG. A simulation model of parallel DGs supply to a group of the load in the form of a standalone microgrid is implemented in MATLAB/Simulink. Two case studies such as power-sharing and load transient are carried out. The results have shown that VSG provides the outperform compare to the modified droop control when a large load transition is applied.

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单机微电网改进下垂控制与虚拟同步发电机的暂态响应比较

基于逆变器的分布式发电机(DG)在解决全球日益增长的能源需求和环境问题方面发挥着重要作用。传统的并网电流控制的分布式发电系统存在成网能力不足、惯性不足等问题。因此，DG不能独立运行，DG的渗透率受到限制。为了解决这些问题，最近提出了一种模仿同步发电机特性的控制策略——下垂控制和虚拟同步发电机(VSG)。看到两者控制的潜力;本文旨在研究改进下垂控制和VSG的动态性能。在MATLAB/Simulink中实现了并联dg以独立微电网形式向一组负载供电的仿真模型。进行了电力共享和负载暂态两个实例研究。结果表明，在大负载转换时，VSG比改进的下垂控制具有更好的性能。

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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2019 5th International Conference on Engineering, Applied Sciences and Technology (ICEAST)

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