Calculation and Experiment Research of Improving Generated Energy in Grid-Connected PV Power Station Based on Manual Adjustment of Angle

Abstract

The method that dividing a year into multiple time periods and calculating the optimum tilt angle of PV panels in every period is proposed. Calculation software is developed using Labview language. Taking some region in Liaoning province for example, the yearly radiation under fixed inclination, two inclinations and three inclinations every year are compared. The capital investment and increased revenue in the case of fixed inclination, adjusting the bracket twice a year and adjusting the bracket three times a year are compared. The calculation results show that adjusting the angle twice a year and adjusting it three times a year can increase the overall yield 4.03% and 4.39% respectively. The test platform is built up. And the experiment results show that the generating capacity of the 8th unit after angle adjustment increases significantly comparing with that of the 5th unit under fixed inclination.