基于下垂逆变器的孤岛微电网导纳建模及稳定性分析

2022 IEEE International Conference on Power Systems and Electrical Technology (PSET) Pub Date : 2022-10-13 DOI:10.1109/PSET56192.2022.10100385

Ying Jiang, Yao Sun, Xin Li, Yunsheng Fan

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引用次数: 0

摘要

提出了一种基于逆变器的海岛微电网导纳精确建模和稳定性分析方法。基于逆变器的孤岛式交流配电系统由于其自身的特点，容易出现不稳定的情况。为了研究系统不稳定的根源，建立了精确的输出变换器导纳模型。基于导纳模型，对微电网系统的稳定性进行了分析。同时，提出了一种稳定控制方法，扩大了系统的稳定范围。最后，仿真结果验证了孤岛交流系统导纳模型和稳定性判断的准确性，验证了稳定控制方法的有效性。

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Admittance Modeling and Stability Analysis of Droop Inverters-Based Island Micro-Grid

This paper presents a precise admittance modeling and stability analysis method for inverters-based island micro-grid. Due to the characteristics of inverters-based island AC distribution system, it is prone to be unstable. In order to study the root of system instability, a precise output converter admittance model is established. Based on the admittance model, the stability of micro-grid system has been analyzed. At the same time, a stabilizing control method is proposed to expand the stability range of the system. Finally, simulation results verify the accuracy of admittance model and stability judgement in island AC system, and verify the effectiveness of the stabilizing control method.

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来源期刊

2022 IEEE International Conference on Power Systems and Electrical Technology (PSET)

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