A Review of Control Techniques and Energy Storage for Inverter-Based Dynamic Voltage Restorer in Grid-Integrated Renewable Sources

Table 3

Response to abnormal grid voltage and frequency.

Standard	Voltage (V)	Clearing time (sec)
Abnormal response of grid voltage
IEEE 1547 Rule 21	V < 45%	0.16
	45% < V < 60%	1
	60% < V < 88%	2
	110% < V < 120%	1
	120% < V	0.16
IEC 61727	V < 50%	0.1
	50% < V < 85%	2
	110% < V < 135%	2
	135% < V	0.05
IEEE 929	V < 50%	6
	50% < V < 88%	120
	110% < V < 120%	120
	120% < V	6
VDE-AR-N-4105	V < 80%	0.1
	V > 110%	0.1
AS 4777	V < 200 V	2
	V > 270 V	2
Abnormal response of grid frequency
IEEE 1547A Rule 21	f < 57	0.16
	57 < f < 59.5	2
	60.5 < f < 62	2
	62 < f	0.16
IEC 61727	±1	0.2
IEEE 929	f < 59.5	6
	f > 60.5	6
VDE-AR-N-4105	f < 51.5	0.1
	f < 47.5	0.1
AS 4777	f < 45	2
	f > 55	2
Rule 21	f > 60.5	0.16
	f < 59.3	0.16

Cycles