Microgrid concept provides suitable context for installing distributed generation resources and providing reliability and power quality for loads. During grid connected mode of microgrid, all stability issues are getting handled by main grid due to its sufficient inertia. But when islanding occurs, microgrid faces stability-related problems. This paper presents the state space model of isolated microgrid along with load dynamics. This paper investigates the effect of static load, induction motor type of dynamic load and composite load on the stability of the island microgrid. The paper also studies the effect of damping and inertia on the stability of the microgrid. The performance of the test system is evaluated using MATLAB simulation software. The present studies show that during the planning of the microgrid, effect of types of loads and load changes should be considered for stable operation of the system.

中文翻译：

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带复合负载的单机微电网小信号稳定性分析

微电网概念为安装分布式发电资源和为负载提供可靠性和电能质量提供了合适的环境。在微电网并网模式下，由于其足够的惯性，所有稳定性问题都由主电网处理。但是当发生孤岛时，微电网面临与稳定性相关的问题。本文介绍了孤立微电网的状态空间模型以及负载动态。本文研究了静负载、感应电机型动负载和复合负载对孤岛微电网稳定性的影响。论文还研究了阻尼和惯性对微电网稳定性的影响。使用MATLAB仿真软件对测试系统的性能进行评估。目前的研究表明，在微电网规划过程中，