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7/25/2019 Microgrid secondary control
1/16
DG 1 & 2 (33 kVA rating) DG 3 & 4 (25 kVA rating
DGs
0.1 0.05
420 390
15 10.5
20000 16000
Lines
Line 1 Line 2 Line
318 1847
Loads
Load 1 Load 2
(Per phase) 12kW (Per phase) 1
DG 1 & 2 (33 kVA rating) DG 3 & 4 (25 kVA rating
DGs
0.1 0.05
420 390
15 10.5
20000 16000
Lines
Line 1 Line 2 Line
Loads
Load 1 Load 2
12kW 1
7/25/2019 Microgrid secondary control
2/16
DG 1 & 2 (33 kVA rating) DG 3 & 4 (25 kVA rating)
DGs
0.1 0.05
420 390
15 10.5
20000 16000
Lines
Line 1 Line 2 Line 3
318 1847 318
DG 1 & 2 (33 kVA rating) DG 3 & 4 (25 kVA rating)
DGs
0.1 0.05
420 390
15 10.5
20000 16000
Lines
Line 1 Line 2 Line 3
7/25/2019 Microgrid secondary control
3/16
Increase to to restore the fre!enc"to reference #a$!e
Increase to to restore theto reference #a$!e
%re!enc" droop characteristic Vo$tage droop characteristic
7/25/2019 Microgrid secondary control
4/16
Microgrid
DG 1 DG NDG 2 DG 3
DG N-
1
Central
Controller
7/25/2019 Microgrid secondary control
5/16
Microgrid
DG 1 DG NDG 2 DG 3
DG N-
1
7/25/2019 Microgrid secondary control
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=
=
=Local
Loads
Local
Loads
Loc
Load
Fuel
Cell
Micro-
turbine
Photo-
voltaic
Local Bus Local Bus Local Bus
Common Bus
Main grid
Isolation Switch
LineLineLine
Microgrid
Inverter
Inverter
Inverter
7/25/2019 Microgrid secondary control
7/16
=
=
=Local
Loads
Local
Loads
Local
Loads
Fuel
Cell
Micro-
turbine
Photo-
voltaic
Local Bus Local Bus Local Bus
C!!n "#$
ain grid
%$atin 'it*
LineLineLine
Microgrid
In#e
rter
In#erter
In#e
rter
7/25/2019 Microgrid secondary control
8/16
V
7/25/2019 Microgrid secondary control
9/16
C#rr+
7/25/2019 Microgrid secondary control
10/16
DG 1
DG 2 DG 3
DG 4
'eferenceVa$!e
7/25/2019 Microgrid secondary control
11/16
%i$ter
Poer a$c!$ation
7/25/2019 Microgrid secondary control
12/16
%i$ter
Poer a$c!$ation
7/25/2019 Microgrid secondary control
13/16
Vo$tageontro$$
er
!rrentontro$$
er
Poer
ontro$$er
a*c+d,
7/25/2019 Microgrid secondary control
14/16
7/25/2019 Microgrid secondary control
15/16
Infor-ation fro-neigh*o!ring DGs
a$c!$ator
-cK
.econdar"Vo$tage ontro$
7/25/2019 Microgrid secondary control
16/16
-
cK
a$c!$ator
Infor-ation froneigh*o!ring D
.econdar"#o$tage contro$