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首页> 美国政府科技报告 >Performance Comparison Between Two Grid-Connected PV-Plants
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Performance Comparison Between Two Grid-Connected PV-Plants

机译：两个并网光伏电站的性能比较

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The object of the project was to determine the energy production potential for photovoltaics in Sweden and to identify major system loss mechanisms. Performance parameters of two grid-connected PV-plants was compared with the other and combined with results from long-term measurements of climate characteristics. Annual AC efficiencies of 4.8 per cent and 9.0 per cent for the two plants were estimated. The large difference is mainly explained by different characteristics of modules and power conditioners. One inverter, which was not designed for the actual low power levels, is responsible for an annual loss close to 30 per cent while the corresponding value for the other inverter is 15 per cent. About 45 per cent of the global irradiation in Sweden originates from periods at an irradiance below 500 W per m/sb2/. Different low irradiance characteristics of modules and inverters between the two plants, therefore, significantly influenced the output. (ERA citation 12:047312)

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