Predicting Spare Parts Inventory of Hydropower Stations and Substations Based on Combined Model

Figure 4

Prediction values based on the ARMA model and BP neural network. (a) Prediction values for LCD based on the ARMA (1, 1) +BP. (b) Prediction values for CPU based on the ARMA (2, 1) +BP. (c) Prediction values for DCPS based on the ARMA (1, 0) +BP.

(a)

(b)

(c)