Control and Design of Microgrid Components - Power Systems ...

Island, Setpoints are 10% and 90% of Unit Rating, Setpoint Change
Utility
System
F
1
P
1
4 wire
75yd
4 wire
25yd
P 2
L L
1
3
L
4
L
5
F
2
Event:
Setpoint P
2
Change
Event shows Unit 2 backing off from maximum output power after power setpoint of unit 2 has been reduced.
Series Configuration, Control of P
1
and P
2
A P
2
=90% B P
2
=50%
P
1
[pu] 0.4 = 50% 0.44 = 55%
P [pu] 0.8 = 100% 0.76 = 95%
2
Frequency
[Hz]
Load Level
[pu]
Grid Flow
[pu]
59.8 59.775
1.2 = 150% 1.2 = 150%
0.0 0.0
Intermediate Bus (Load L
3
) Voltage, 200ms/div.
108