Analysis of Power Quality in Microgrid Systems with Renewable Energy Integration Utilizing Multi-Signal Discrete Wavelet Transform

L Raghavendra, L. Parthasarathy

Abstract


Microgrids (MG) have emerged as a promising solution for enhancing energy efficiency, integrating renewable energy sources, and ensuring reliable power supply in localized areas. However, the incorporation of Distributed Energy Resources (DERs) in MG introduces novel challenges related to Power Quality (PQ). It is essential to assess and quantify the MG network’s PQ to mitigate the issue. The proposed work investigates the PQ challenges that arise due to the integration of DERs in fully meshed and radial microgrids using a 1-dimensional new Multi-Signal Discrete Wavelet Transform (MSDWT). The assessment is carried out by considering voltage and frequency variations, Voltage Unbalance Factor (VUF), power losses, and Total Harmonics Distortion both in on-grid and off-grid modes of operation. The impacts of Solar Photo Voltaic (PV) and Wind Turbine (WT) are tabulated at constant and variable irradiance and wind speed.  The results of the PQ analysis will help in the development and implementation of effective control and mitigation techniques to improve the overall PQ of the MG.  


Keywords


Discrete Wavelet Transform, Power Quality, Microgrid, Renewable Energy Resources

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References


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DOI (PDF): https://doi.org/10.20508/ijrer.v14i4.14584.g8973

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