Impact of Induction Motor Load on the Dynamic Voltage Stability of Microgrid

2018 Australian & New Zealand Control Conference (ANZCC) Pub Date : 2018-12-01 DOI:10.1109/ANZCC.2018.8606599

N. Afrin, Fuwen Yang, Junwei Lu, Monirul Islam

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引用次数: 13

Abstract

The microgrid (MG) has already been acknowledged as one of the most promising section of power system. However, being different from the conventional power system, MG’s stability issues need to be additionally explored. Moreover, low inertia of the inverter based Renewable Energy Sources (RESs) is the premier cause to make disturbances more vulnerable to the islanded MG than that of the grid connected MG. In this paper, the impact of Induction Motor(IM) load on dynamic voltage stability of an islanded MG during the occurrence of fault is investigated. Different loading condition, containing different percentage of IM load, are examined. Nextly, a control strategy, providing Reactive Power Support (RPS) during voltage sag, from Photo Voltaic (PV) system as countermeasure for dynamic voltage instability is presented. A comparison between with and without RPS is provided to show the effectiveness of the providing reactive power support. The case studies are carried out in MATLAB/ Simulink environment. The results show that the countermeasure can play a substantial role in preventing the voltage instability.

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感应电机负载对微电网动态电压稳定性的影响

微电网已被公认为电力系统中最具发展前景的部分之一。然而，与传统的电力系统不同，MG的稳定性问题还需要进一步探讨。此外，基于逆变器的可再生能源(RESs)的低惯性是导致孤立MG比并网MG更容易受到干扰的主要原因。本文研究了故障发生时感应电动机负载对孤岛式异步电动机动态电压稳定性的影响。研究了不同加载条件下不同比例的IM载荷。在此基础上，提出了光伏系统在电压骤降时提供无功支持(RPS)的控制策略，作为动态电压不稳定的对策。通过对有无RPS的比较，说明了提供无功支持的有效性。案例研究是在MATLAB/ Simulink环境下进行的。结果表明，该对策对防止电压不稳定起到了实质性的作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2018 Australian & New Zealand Control Conference (ANZCC)

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