A Novel Protection Scheme against Fault Resistance for AC Microgrid

Table 3

Active power values and the protection threshold setting values of various types of FTFR in different internal fault positions under islanded mode.

Islanded mode	Types of fault	Fault position (MW)
		side	25%	50%	75%	side
	ABG (5 Ω, 5 Ω)	1.05 (0.13)	0.26 (0.10)	0.12 (0.08)	0.22 (0.08)	0.97 (0.07)
	ABG (5 Ω, 6 Ω)	0.93 (0.10)	0.17 (0.08)	0.04 (0.02)	0.16 (0.018)	0.89 (0.016)
	AB (5 Ω)	0.30 (0.07)	0.16 (0.04)	0.11 (0.03)	0.14 (0.03)	0.26 (0.02)
	AG (5 Ω)	0.51 (0.10)	0.10 (0.03)	0.04 (0.02)	0.09 (0.019)	0.50 (0.018)
	ABCG (4 Ω, 5 Ω, 6 Ω)	0.91 (0.15)	0.30 (0.08)	0.03 (0.014)	0.26 (0.014)	0.83 (0.013)
	ABCG (5 Ω, 5 Ω, 5 Ω)	0.97 (0.16)	0.36 (0.09)	0.13 (0.058)	0.32 (0.055)	0.96 (0.05)