Fresh Questions, Practical Answers: PVsyst Q&A Series #18

1. Why is there a difference in shading loss when importing terrains of different ranges? Answer: The software simulates the calculation of shading loss mainly in two types: near shadings and horizon shadings. The former requires modeling, while the latter requires setting the horizon. If a model containing terrain contours and arrays is imported into the 3D modeling, it is generally calculated as near shadings. For terrains with a large area and the farthest point being more than 10 times the diameter of the photovoltaic field, if the ground elevation in the distance is high and may cause shading to the photovoltaic field, the horizon should be set in the software to calculate the horizon shading loss. If not set, the software defaults the horizon shading loss to 0%, which may result in a smaller simulated shading loss. 2. When using a master-slave inverter, what issues should be noted? Answer:…