Analysis of the Influence of Environment Parameters on Grid-Connected Photovoltaic System

Abstract:

The performance of grid-connected Photovoltaic (PV) power generation system operating in the field is inevitably affected by environmental parameters (solar irradiance, temperature, humidity, wind speed, spectrum, cloud cover, dust, etc.), of which the main factors are solar irradiance and temperature. Based on the data of 100kW PV system of ShangYi PV Plant captured form June 1, 2012 to May 31, 2013 (1 min resolution) and the data of Qinghai Delingha 20MW PV Plant in China captured in 2012., the influence of solar irradiance and temperature on PV system is analyzed. The results show hourly PV array DC power has highly significant positive correlation with hourly total solar radiation, also PV system AC power output and solar irradiance have good consistency. Both of them show irradiance is the main environment factor to the PV system. Then using the captured data, the relationship between maximum load and PV panels surface temperature is also analyzed, the surface temperature is higher, the maximum load is lower.

• Periodical: Applied Mechanics and Materials (Volume 521)
• Pages: 13-18
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.521.13
• Online since: February 2014
• Authors: Ling Ling Wang, Shu Ju Hu*, Yan Feng Meng, Rui Ma
• Keywords: AC Power Output, Grid-Connected Photovoltaic (PV) System, Hourly PV Array DC Power, Solar Irradiance, Temperature

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