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

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Afrin, Nadia
Yang, Fuwen
Lu, Junwei
Islam, Monirul
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2018
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Melbourne, Australia
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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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ANZCC 2018 - 2018 Australian & New Zealand Control Conference
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Electrical engineering
Electronics, sensors and digital hardware
Electrical energy generation (incl. renewables, excl. photovoltaics)
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