分布式能源微电网中非线性负荷对电压源尺寸影响的研究

2022 5th International Conference on Energy Conservation and Efficiency (ICECE) Pub Date : 2022-03-16 DOI:10.1109/ICECE54634.2022.9758974

Faiqa Tariq, Reeha Shareef, T. Mahmood

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引用次数: 0

摘要

与传统能源和分布式能源不同，可再生能源的动态特性给微电网带来了诸多问题。因此，电池储能系统(BESS)以其较好的效率和较高的能量密度得到了广泛的应用。一般来说，BESS在没有任何本地电压源(VS)的情况下无法运行。此外，非线性负载在接入电力系统时会产生谐波电流和电流不平衡等问题。由于谐波电流与VS阻抗的相互作用，电源输出电压和电流也会失真。本文给出了考虑线性负荷和非线性负荷的并网模式和孤岛模式下的负荷潮流。本文还讨论了利用MATLAB/Simulink研究微电网安全运行VS可行等级的分析方法。此外，合适的VS额值可以提高电力系统的电能质量(PQ)，因为它可以承受RES和非线性负载引起的谐波效应。

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Investigating the Effect of Non-Linear Loads on Sizing of Voltage Source in Microgrid with Distributed Energy Resources

Dynamic nature of Renewable Energy Sources (RESs) pose many problems in microgrid unlike the conventional energy resources with distributed energy resources (DERs). Therefore, battery energy storage system (BESS) has gained popularity due to its better efficiency and high energy density. Generally, BESS cannot operate without any local voltage source (VS). Moreover, non-linear loads cause many issues such as harmonic current and current unbalance when connected to the power system. Supply output voltage and current is also distorted due to the interaction of harmonic currents with the VS impedance. This paper presents the power flow to the loads under grid-connected mode and islanded-mode considering both linear and non-linear loads. In this paper, the analytical methodology to investigate the feasible rating of VS is also discussed for safe operation of microgrid using MATLAB/Simulink. Further, suitable rating of VS improves power quality (PQ) of the power system as it can withstand harmonics effects caused by RES and non-linear loads.

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2022 5th International Conference on Energy Conservation and Efficiency (ICECE)

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