IEEE Power & Energy Magazine - May/June 2021 - 29

Circuit
Breaker Closed
L
WT
B

Circuit
Breaker Open

Load

PV

Photovoltaic

ICB4
CB4

Utility Grid

Wind Turbine
Batteries Energy
Storage
Fault Current

Bus 5
ICB7

Bus 6
ICB9 ICB10

CB5 CB7

CB9 CB10

ICB5

PEs
Fault
ICB6

Backup
Protection

Main Feeder
Protection

CB6 CB8

CB11
L

L

PV

ICB2
CB1

CB2
ICB12
CB12

Bus 3
ICB13 ICB15
CB13 CB15

Bus 4
ICB17 ICB18
CB17 CB18

Utility Grid
Bus 1

ICB14

Grounding
Transformer

CB20
ICB3

Bus 2

CB14 CB16
L

L

WT

CB3

Distribution Grid

CB19

Microgrid

B

(a)
Circuit
Breaker Closed
L
WT
B

Load

Bus 5

Bus 6

CB5 CB7

CB9 CB10

Circuit
Breaker Open
PV

Photovoltaic

CB4

Utility Grid

Wind Turbine
Batteries Energy
Storage
Fault Current

PEs
CB11

CB6 CB8

Fault

Main Feeder
Protection

L

L

PV
CB1

CB2
Bus 3
CB12

Bus 4

CB13 CB15

CB17 CB18

CB14 CB16

CB19

Utility Grid
Bus 1
Grounding
Transformer

Distribution Grid

CB20

L
Bus 2

CB3

L

WT
B

Microgrid

(b)

figure 7. (a) A differential protection scheme for microgrids and (b) the operation of the main feeder protection. (Continued)
may/june 2021	

ieee power & energy magazine 	

29



IEEE Power & Energy Magazine - May/June 2021

Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - May/June 2021

Contents
IEEE Power & Energy Magazine - May/June 2021 - Cover1
IEEE Power & Energy Magazine - May/June 2021 - Cover2
IEEE Power & Energy Magazine - May/June 2021 - Contents
IEEE Power & Energy Magazine - May/June 2021 - 2
IEEE Power & Energy Magazine - May/June 2021 - 3
IEEE Power & Energy Magazine - May/June 2021 - 4
IEEE Power & Energy Magazine - May/June 2021 - 5
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IEEE Power & Energy Magazine - May/June 2021 - Cover3
IEEE Power & Energy Magazine - May/June 2021 - Cover4
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