The Modelling and Simulation Of Power Flow and Fault Analysis For A Hybrid DC Microgrid

2021 IEEE PES/IAS PowerAfrica Pub Date : 2021-08-23 DOI:10.1109/PowerAfrica52236.2021.9543441

E. Ojo, M. Zulu, Ajibola O. Akinrinde

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Abstract

The access to electricity is one of the major problems faced by rural areas and isolated regions. Over the years, the fossil-fueled power stations used to generate electricity had a detrimental effects and it has necessitated the need for alternative energy sources such as solar, wind, biomass and other renewable energy sources. Hybrid energy system (HES) based on distributed energy resources (DERs) integration into the DC microgrid is considered as the viable means to carry out the electrification of rural as well as isolated area. However, DC microgrids are limited by the occurrence of faults and this affect their performance. This paper presents the modelling and simulation of power flow and the fault analysis in a hybrid DC microgrid. This hybrid DC microgrid is powered by PV and wind energy system, the formulation, modeling and simulations was implemented in the MATLAB/SIMULINK. The faults analyzed in the system are the DC line-to-ground faults and DC line-to-line faults. Results for a hybrid DC microgrid revealed that high quality of power is experienced in load distribution. Also based on the results, when DC faults occurs there is disturbance to output.

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混合直流微电网潮流建模与仿真及故障分析

获得电力是农村地区和偏远地区面临的主要问题之一。多年来，用于发电的化石燃料发电站产生了有害的影响，因此需要替代能源，如太阳能、风能、生物质能和其他可再生能源。基于分布式能源与直流微电网并网的混合能源系统被认为是实现农村和偏远地区电气化的可行手段。然而，直流微电网受到故障发生的限制，影响了其性能。本文介绍了混合直流微电网的潮流建模与仿真及故障分析。该混合直流微电网由光伏和风能系统供电，在MATLAB/SIMULINK中实现了该系统的制定、建模和仿真。系统中分析的故障有直流线对地故障和直流线对线故障。结果表明，混合直流微电网的负荷分布具有较高的电能质量。结果表明，当直流故障发生时，会对输出产生干扰。

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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2021 IEEE PES/IAS PowerAfrica

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