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Adaptive virtual resistance load sharing for resistive microgrids

机译：电阻微电网的自适应虚拟电阻负荷分担

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摘要

This paper proposes an adaptive virtual resistance load sharing method in alpha beta frame, where the alpha-component of the virtual resistance is used to share the active power and the beta-component of the virtual resistance is used to share reactive power. Using the proposed method for photovoltaic systems makes the active and reactive power sharing sensitive to the varying nature of the solar energy. It will be shown that the proposed adaptive active power sharing significantly reduces the energy required from a fossil fuelled auxiliary generator. The proposed adaptive reactive power sharing reduces the reactive power exchanged with the auxiliary generator and the switching stress on each distributed generator's converter through, seamlessly, reducing the reactive power contribution of the units with higher active power contribution. This is all achieved without any communication between distributed generation units. Whilst the proposed method is also applicable on inductive microgrids, this paper focuses on a resistive micro grid since most microgrids are likely to be located on the low voltage side of the grid (where the network is mainly resistive). Different load sharing methods in a resistive microgrid are also categorized and briefly reviewed to justify the chosen approach in the paper. MATLAB/SIMULINK simulations are used to validate the proposed method. (C) 2018 Elsevier B.V. All rights reserved.
机译：本文提出了一种在α-β框架中的自适应虚拟电阻负荷分担方法，其中虚拟电阻的α分量用于共享有功功率，虚拟电阻的β分量用于共享无功功率。使用所提出的用于光伏系统的方法使得有功和无功功率共享对太阳能的变化性质敏感。将显示，提出的自适应有功功率共享显着降低了化石燃料辅助发电机所需的能量。所提出的自适应无功功率共享通过无缝地减少具有较高有功功率贡献的单位的无功功率贡献，来减少与辅助发电机交换的无功功率和每个分布式发电机的转换器上的开关应力。无需在分布式发电单元之间进行任何通信即可全部实现。尽管所提出的方法也适用于感应微电网，但本文将重点放在电阻微电网上，因为大多数微电网很可能位于电网的低压侧（电网主要是电阻性的）。还对电阻微电网中的不同负载分配方法进行了分类并进行了简要回顾，以证明本文选择的方法是合理的。 MATLAB / SIMULINK仿真用于验证所提出的方法。 （C）2018 Elsevier B.V.保留所有权利。

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