TY - EJOU AU - Zhang, Lian AU - Chen, Zijian AU - Zhang, Heng AU - Ma, Zenghong AU - Cao, Baowen AU - Song, Lihong TI - Accurate Study and Evaluation of Small PV Power Generation System Based on Specific Geographical Location T2 - Energy Engineering PY - 2020 VL - 117 IS - 6 SN - 1546-0118 AB - As an important new energy, solar energy has been extensively used in the world and different types of solar energy systems have been used in different fields. The photovoltaic power generation system has obvious advantage and high stability compared with other energy systems. Furthermore, the small-scale photovoltaic power generation system has a wider application in the field of power generation due to the performance of high efficiency. In this paper, the optimization research and system evaluation of small-scale photovoltaic power system have been studied in different areas by simulation and experimental methods. Based on the determination of photovoltaic model system, four typical geographical locations are selected and PVsyst is applied to the simulation study. The annual power output is 4829 kWh, 3489 kWh, 4455 kWh, 2766 kWh and the solar energy utilization efficiency is 14.91%, 14.79%, 17.66%, 15.77% for Mexico City, Xinyang, Changchun and London respectively from the simulation results. The results show that the radiation conditions, the optimum tilt angle, the minimum spacing and different geographical locations are the main reasons for the difference of power generation and solar energy utilization efficiency. Subsequently, Changchun is selected as the experimental area to carry out experimental research and verify the conclusion of the simulation study. The volt ampere characteristic curve and power output curve show that the photovoltaic system has no defects, hot spots, partial shading and damage. The annual total power generation of Changchun is 4119 kWh. Hence, the simulation results are in good agreement with the experimental results. Consequently, the application of small photovoltaic power generation system requires to fully consider the regional conditions and key parameters (optimum tilt angle, minimum spacing, etc.) to obtain better power generation efficiency. KW - Power generation; small photovoltaic system; optimum tilt angle; minimum spacing DO - 10.32604/EE.2020.013276