Power Quality Analysis of Power System Involving Grid Connected Photovoltaic (PV) System
نویسندگان
چکیده
Power Quality is an essential aspect for reliable operation of power grid including Photovoltaic based generation. This paper focuses on real time problem of injection of harmonics and resonance into power network having 5MW solar plant. The solar plant includes 10 inverters each of 500KW connected to 33kV bus. Power produced by plant is explored via 4km cable at 220kV, where conventional plant of 400MW running in parallel at same bus. It is observed that due to injection of harmonics and resonance at particular natural frequency after certain irradiation and hence generation, at specific time of day several inverters are tripped simultaneously. Voltage variation has also been observed. To address the said issue, this paper aims at identification of culprit order of harmonics and resonant frequency, and also the filter design to mitigate the particular issue of harmonics.
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