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Integration this paper explores the seasonal changes in photovoltaic array performance, power quality, and transformer loading in summer. The temperature difference ( \({T}_{c}-{T}_{a}\) ) increases from 3 ℃ to 24.9 ℃ during 6:00 AM to 12:00 PM, resulting in PV efficiency dropping from 16.53% to 14.05%. The solar intensity peaks at 749 W/m2, but the total harmonic distortion has decreased from 6.16% to 1.68%, indicating better quality of power. The power factor (PF) reduces from 0.91 to 0.63 with an increase in PV output. Transformer loading rises by 5.8% due to thermal losses, 2.69% due to \(THDi\) , and 10.10% due to low PF. The overloading factor was 1.20 and \(LoL\) factor was 6, and hence the transformer was under much stress due to higher temperatures and low PF. This study highlights the necessity for strategies to optimize PV performance and manage transformer stress during summer.

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Impact of Solar Intensity and PV Module Temperature on Power Quality and Transformer Life in Grid-Connected Solar Photovoltaic Power Plants

  • 会议论文

  • 发表日期：

    2025年

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  • Saurabh Kumar Rajput,
  • Arjun Deo,
  • Deepansh Kulshrestha,
  • Sonali R. Nandanwar,
  • M. L. Kolhee

摘要

Integration this paper explores the seasonal changes in photovoltaic array performance, power quality, and transformer loading in summer. The temperature difference ( \({T}_{c}-{T}_{a}\) ) increases from 3 ℃ to 24.9 ℃ during 6:00 AM to 12:00 PM, resulting in PV efficiency dropping from 16.53% to 14.05%. The solar intensity peaks at 749 W/m2, but the total harmonic distortion has decreased from 6.16% to 1.68%, indicating better quality of power. The power factor (PF) reduces from 0.91 to 0.63 with an increase in PV output. Transformer loading rises by 5.8% due to thermal losses, 2.69% due to \(THDi\) , and 10.10% due to low PF. The overloading factor was 1.20 and \(LoL\) factor was 6, and hence the transformer was under much stress due to higher temperatures and low PF. This study highlights the necessity for strategies to optimize PV performance and manage transformer stress during summer.