Optimal Fractional Order Based on Fuzzy Control Scheme for Wind Farm Voltage Control with Reactive Power Compensation

Table 1

Protection type.

Protection type	Limits	Duration (s)
Instantaneous AC overcurrent	1.2 pu
AC overcurrent (positive-sequence)	1.1	5
AC current unbalance	0.4	0.2
AC undervoltage (positive-sequence)	0.95	1.5
AC overvoltage (positive-sequence)	1.05	1.5
AC voltage unbalance (negative-sequence)	0.05	0.2
AC voltage unbalance (zero-sequence)	0.05	0.2
DC overvoltage	1600 (V)	0.001
Under/over frequency (Hz)	[49.8, 50.2]	2
Under speed/over speed (pu)	[0.3, 1.5]	5
Under/over wind speed (m/s)	[4, 14]