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POWER QUALITY ANALYSIS OF GRID CONNECTED PV POWER SYSTEM
Abstract
For produce electricity from solar energy, it would be necessary for an inverter to convert the continuu current (DC) into alternating current (AC). The inverter is the cause of problems affecting the stability of the power supply system because it is a switching device used to adjust the AC frequency as required. At the same time, it can cause harmonics that result in waveform distortions and affect electronic devices that receive energy. Then it could cause malfunction of the electronic device. In this paper, we present and study harmonics characteristics on the grid, PV system and load. The result shows that most of the grid's harmonics are affected by the PV system and load when the inverter is powered up to almost nominal power, while the harmonics are low, and the load harmonics depend on the type of load. We found that the harmonics of the PV system barely affect the load and the harmonics of the network are more affected by the load than the PV system.
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References6
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Hu H., Shi Q., He Z., He J., Gao S., Potential Harmonic Resonance Impacts of PV Inverter Filters on Distribution Systems, IEEE Transactions on Sustainable Energy, vol. 6, no. 1, pp. 151-161, 2015.
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