Performance assessment of a 30.26 kW grid-connected photovoltaic plant in Egypt  

作　　者：Amal A.Hassan Doaa M.Atia Hanaa T.El-Madany Aref Y.Eliwa 

机构地区：[1]Photovoltaic Cells Department,Electronics Research Institute,Egypt,Cairo,Egypt

出　　处：《Clean Energy》2024年第6期120-133,共14页清洁能源(英文)

摘　　要：This paper presents an experimental analysis and performance evaluation of a grid-connected photovoltaic plant installed on the rooftop of the Electronics Research Institute in Cairo,Egypt.Cairo is classified as a hot-desert climate region according to the standard Koppen-Geiger climate classification system.Over a year,we monitored real-time data to assess key system performance metrics,such as energy yield,efficiencies,performance ratio,capacity factor,and losses.Based on the obtained experimental results,the highest final yield of 5.2498 hr/day was observed in the summer,whereas the lowest yield of 3.439 hr/day occurred in the winter months.The photovoltaic plant had an average annual system efficiency of 15.8%,while the photovoltaic and inverter had mean yearly efficiencies of 17.1%and 97.2%,respectively.The average annual performance ratio is 83.03%,and the capacity factor is 18.72%.The monthly total loss exhibited a linear rise alongside increasing ambient temperature and solar irradiance.The ambient temperature affected the system efficiency,photovoltaic efficiency,and performance ratio.The findings can help strengthen forecasts of future large-scale photovoltaic plants in hot desert climates.Moreover,they can guide the design,optimization,operation,and maintenance of new grid-connected photovoltaic systems.

关 键 词：photovoltaic grid-connected performance analysis energy yield PV efficiency data pre-processing energy losses 

分 类 号：TM9[电气工程—电力电子与电力传动]