Currently, Microgrids (MG) have given high attention due to their ability to increase power systems reliability and controllability. Also, small-scale renewable units are increasing according to the distribution of renewable energy. In this paper, a hybrid MG (H-MG) is proposed. This H-MG includes AC and DC buses, two voltage levels, linear and nonlinear loads, and different distributed generators such as diesel, wind, and PV besides storage units. Modified angle droop control is utilized in the coupling inverters between DC-MG and AC-MG because it leads to a much smaller standard frequency deviation than conventional droop control. Also, to enhance the intermitted sources of energy sharing and the system characteristics of damping, an additional control loop is introduced. Where, both the voltage angle and the voltage magnitude are corrected by adjusting the output of the droop controller. Moreover, due to the high R/X ratio of the study system as in rural area, the proposed angle droop control is enhanced by using some transformation to amend both the feedback gains and the droop equations to account for the high coupling between active and reactive power and enhance power-sharing in such case. Various simulation studies are executed and compared with the related works to show the efficiency and quality of the proposed MG operation.

目前，微电网（MG）因其提高电力系统可靠性和可控性的能力而受到高度关注。此外，根据可再生能源的分布，小型可再生单位正在增加。在本文中，提出了一种混合MG（H-MG）。该H-MG包括交直流母线、两种电压等级、线性和非线性负载，以及除储能单元外的柴油、风能和光伏等不同分布式发电机。在 DC-MG 和 AC-MG 之间的耦合逆变器中使用了修正的角度下垂控制，因为它导致比传统下垂控制小得多的标准频率偏差。此外，为了增强间歇性能量共享源和阻尼系统特性，引入了额外的控制回路。在哪里，通过调整下垂控制器的输出来校正电压角和电压幅值。此外，由于农村地区研究系统的 R/X 比较高，因此通过使用一些变换来修正反馈增益和下垂方程，以解决有功和无功之间的高耦合，从而增强了所提出的角度下垂控制。在这种情况下，加强权力共享。执行各种模拟研究并与相关工作进行比较，以显示建议的 MG 操作的效率和质量。通过使用一些变换来修改反馈增益和下垂方程，以解决有功和无功功率之间的高耦合，并在这种情况下增强功率共享，从而增强了所提出的角度下垂控制。执行各种模拟研究并与相关工作进行比较，以显示建议的 MG 操作的效率和质量。通过使用一些变换来修改反馈增益和下垂方程，以解决有功和无功功率之间的高耦合，并在这种情况下增强功率共享，从而增强了所提出的角度下垂控制。执行各种模拟研究并与相关工作进行比较，以显示建议的 MG 操作的效率和质量。