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Real-Time Simulation of Smart DC Microgrid with Decentralized Control System Under Source Disturbances

机译:智能DC微电网与源扰动下分散控制系统的实时仿真

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摘要

Decentralized control of DC microgrid (dc mu G) using hybrid renewable energy sources (RES) and battery energy storage system (BESS) which operate with and without grid-connected mode is proposed in this paper. In dc mu G integrated with multiple RES and BESS, fluctuating output characteristics of the distributed generations (DGs) due to changing input conditions and the dynamic interactions of the source and load interface converters are main factors which cause stability problem of DC bus voltage. Thus, to solve this problem, the decentralized control scheme which uses bus voltage level as communication link in the control law is proposed in this paper. Accordingly, the control method realizes different operating modes based on the available generations and load demand. Maximum power and constant voltage controls schemes are applied in the DGs interfacing control to regulate the power and voltage variations due to changing input conditions. Furthermore, in the control strategy, the source and battery interfacing converters are controlled autonomously using the bus voltage level without any communication. This maintains the reliability and flexibility of the system. The proposed system model is developed with Matlab/Simulink SimPowerSystem and simulated with real-time simulation using OPAL-RT.
机译:本文提出了使用混合可再生能源(RES)和电池储能系统(BEST)的分散控制DC微电网(DC MU G),其在本文中采用和无电网连接模式。在与多个RES和BES集成的DC MU G中,由于更改输入条件和源和负载接口转换器的动态交互而导致的分布式代(DGS)的波动输出特性是导致直流母线电压稳定性问题的主要因素。因此,为了解决这个问题,在本文中提出了使用总线电压水平的分散控制方案作为控制法中的通信链路。因此,控制方法基于可用的代和负载需求实现不同的操作模式。最大功率和恒定电压控制方案应用于DGS接口控制,以调节由于更改输入条件而导致的电源和电压变化。此外,在控制策略中,源电池和电池接口转换器自主地使用总线电压电平进行控制,而无需任何通信。这保持了系统的可靠性和灵活性。所提出的系统模型是用Matlab / Simulink Simpowersystem开发的,并使用Opal-RT模拟实时仿真。

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