Research Article
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) |
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