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142 Hybrid-Renewable Energy Systems in Microgrids
Figure 7.17 Short-circuit current leaving Bus 3 under unbalanced faults in the middle
of line 3-4 with prefault condition (1) (A) Constant reactive power control, A-B fault.
(B) Constant reactive power control, A-g fault. (C) Balanced current control, A-B fault.
(D) Balanced current control, A-g fault. (E) Constant active power control, A-B fault. (F)
Constant active power control, A-g fault. (G) Flexible positive- and negative-sequence power
