A Weak-Coupling Flow-Power Forecasting Method for Small Hydropower Station Group

Table 5

Comparison of the 24-hour-ahead prediction performance of two power prediction methods.

	Basin	24 h-ahead prediction		120 h-ahead prediction
		NRMSE	MAPE (%)	NRMSE	MAPE (%)
Traditional method	1	0.18	17.08	0.26	34.57
	2	0.07	2.58	0.09	6.87
	3	0.11	13.15	0.26	21.56
Our method	1	0.13	12.23	0.24	29.15
	2	0.04	2.00	0.07	5.01
	3	0.08	6.73	0.17	12.02