Aiming at the problems of the existing prediction have large error in the PV power prediction system

combined with practical engineering experience

proposed a power prediction method based on historical data longitudinally matching. To processed the historical data of the power station

for eliminating distortion data.Querying historical data with time and prediction data of weather longitudinally

match out the prediction day’s curve of the optical radiation coefficient and the power output

to realize the power prediction for the next few hours or days. Simulation experiment and practical application show that this method has small error

simple and practical

and has practical significance.