Performance assessment of first grid-tied PV solar system under Baghdad city climate condition

الملخص EN

The performance assessment of 15 kWp PV solar system installed at Baghdad/Iraq was achieved.

The yields (final, reference) and performance ratio where changeable from (3.5-4.8) kWh/kWp-day, (4.3-7) kWh/kWp-day and (66-83) %respectively.

The average yearly capacity factor was 18.4%, annual average performance ratio was75.55% with system efficiency of 13.27%, the yearly energy yield was 1585.16 kWh/kWp of year 2018.

By using PVsyst software, it was found that the yearly predicted energy yield 1631 kWh/kWp with uncertainty of 2.8% from real value, this was because of differences between real metrological date of rainy and cloudy days in winter season and hot weather in summer season and estimated data in PVsyst software.

The overall predict system losses due to module temperature rise, radiation reflection losses from the collector, system losses of inverter and DC, AC wiring were 16.7 %.

The present study showed the generated energy was at a high value in August and lowest in December.

The system performance was compared with other Grid-Tied PV solar systems in various countries around the world and found comparable.

itis proved the very good long-term performance of this solar system in real operation conditions in Baghdad city climate in spite of high temperature in summer days and cloudy and rainy days during winter in Baghdad city.