Application of Extension Theory with Chaotic Signal Synchronization on Detecting Islanding Effect of Photovoltaic Power System

Table 3

Testing results of the proposed extension detection method (partial results).

Samples	Normal correlation	Islanding correlation	Harmonic correlation	Swells correlation	Dips correlation	Actual category	Detection category
1	−1	1	−0.45	−0.90	0.49	Islanding	Islanding
2	−1	1	−0.39	−0.90	0.54	Islanding	Islanding
3	−1	1	−0.40	−0.92	0.58	Islanding	Islanding
4	−1	−0.98	−0.97	−1	1	Dips	Dips
5	−0.92	−0.83	−0.97	1	−1	Swells	Swells
6	0.16	−1	1	−0.41	−0.12	Harmonic	Harmonic
7	0.33	−1	1	−0.12	0.20	Harmonic	Harmonic
8	0.31	−1	1	−0.07	0.17	Harmonic	Harmonic
9	1	−1	0.57	0.31	0.35	Normal	Normal
10	1	−1	0.65	0.36	0.38	Normal	Normal