研究目的
To analyse the efficiency of two photovoltaic micro-installations with the power of approx. 40 kWp and to compare the methods for forecasting production of electrical energy by pv installation.
研究成果
Based on the real production of electrical energy in 2017, it was concluded that electrical efficiency of the south-west installation was higher than the east-west installation. Unit yield of electrical energy from the south-west installation was equal 879 kWh/kWp/year, while the yield from the east-west installation was equal 789 kWh/kWp/year. The difference between the production of electrical energy in the south-west installation and the east-west installation is equal 10%. Based on the comparison of the four methods of forecasting electrical energy production from pv installation, it was concluded that the best method (in both cases) was the simple computational method.
研究不足
The discrepancies between the results obtained by different forecasting methods may result from, i.a., using meteorological data from different sources, assumption of different coefficients of losses for the purpose of performing computations. Moreover, verification data were provided for only two installations and covered only one year.
