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Long term performance analysis of a grid connected photovoltaic system in Northern Ireland

机译：北爱尔兰并网光伏系统的长期性能分析

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摘要

The performance of a 13 kW_p roof mounted, grid connected photovoltaic system in Northern Ireland over a period of three years has been analysed on hourly, daily and monthly bases. The derived parameters included reference yield, array yield, final yield, array capture losses, system losses, PV and inverter efficiencies and performance ratio. The effects of insolation and inverter operation on the system performance were investigated. The monthly average daily PV, system and inverter efficiencies varied from 4.5% to 9.2%, 3.6% to 7.8% and 50% to 87%, respectively. The annual average PV, system and inverter efficiencies were 7.6%, 6.4% and 75%, respectively. The monthly average daily DC and AC performance ratios ranged from 0.35 to 0.74 and 0.29 to 0.66, respectively. The annual average monthly AC performance ratios for the three years were 0.60, 0.61 and 0.62, respectively. The performance of this system is compared with that of other representative systems internationally.
机译：在北爱尔兰，以每小时，每天和每月为基础，分析了北爱尔兰13 kW_p屋顶安装的并网光伏系统在三年内的性能。导出的参数包括参考良率，阵列良率，最终良率，阵列捕获损耗，系统损耗，PV和逆变器效率以及性能比。研究了日照和逆变器运行对系统性能的影响。每月平均每日PV，系统和逆变器效率分别从4.5％到9.2％，3.6％到7.8％和50％到87％不等。年平均PV，系统和逆变器效率分别为7.6％，6.4％和75％。每月平均每日直流和交流性能比分别为0.35至0.74和0.29至0.66。三年的年平均AC绩效比率分别为0.60、0.61和0.62。该系统的性能与国际上其他代表性系统的性能进行了比较。

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