Two-Stage Fault Diagnosis Method Based on the Extension Theory for PV Power Systems

Table 5

The results of the fault diagnosis by night in different ways.

Test method	Learning times	Learning accuracy (%)	Test accuracy (%)
The proposed method	no	no	98.04%
K-means clustering method	no	63.73%	57.84%
Multilayer neural network I (5-8-8)	1000	70.59%	66.67%
Multilayer neural network II (5-10-8)	1000	74.51%	72.55%
Multilayer neural network III (5-12-8)	1000	82.35%	81.37%