IEEE Power & Energy Magazine - March/April 2020 - 48

Before

105%

Overloaded Line and
Unused Spare Capacity
on Parallel Lines

32%
21%

(a)
After

99%
48%

Power Pushed to
Unused Parallel Lines,
Resolving Overload

+50 MW

34%

(b)

figure 4. Adding SmartModules can increase the flow of a particular OHL: (a) before adding SmartModules and (b) after
adding SmartModules. (Source: Smart Wires; used with permission.)

Devices to Control OHL Power Flow:
SmartModules

Power Line
XM
Power
Supply
S1
S2

Communications

Control
(a)

(b)

figure 5. The (a) detailed electrical scheme of (b) the
smart-module devices. (Source: Smart Wires; used
with permission.)
48	

ieee power & energy magazine	

By design, all OHLs are limited by electrical and mechanical constraints and sized to meet initial and forecast needs.
However, the system's power-flow needs could change during a line's lifetime. Operators can face situations where
one link is overloaded while other links have spare capacity.
During the long term, several questions need to be answered.
How do we increase the efficiency of grid operations? How
do we decide on the most economical new investments that
will flexibly reduce congestion, given greater uncertainty
about future flows on the network? The application of
power-flow control devices could provide answers under a
wide variety of system conditions.

New Devices for
Power-Flow Control Solutions
The use of flexible ac transmission systems (FACTSs), such as
fixed series, static var, static synchronous, and static synchronous series compensators, provide control of ac transmission
system parameters to increase power-transfer capabilities,
but, until now, most FACTS devices were installed mainly
to address stability and voltage issues. To date, the deployment of FACTS devices in France has been limited due to
the equipment's high cost and large footprint and the lower
anticipated need for resolving voltage and stability issues.
Distributed FACTS devices control power flows to solve
network issues (Figure 4). These devices, called SmartModules (in this case, using FACTS technology developed
by Smart Wires), adjust the transmission system transfer
capacity by increasing the link's impedance, thus redirecting flows toward less constrained lines. The number of
installed modules depends on the necessary modulation
level and the line's current rating (Figure 5). SmartModules
march/april 2020



IEEE Power & Energy Magazine - March/April 2020

Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - March/April 2020

Contents
IEEE Power & Energy Magazine - March/April 2020 - Contents
IEEE Power & Energy Magazine - March/April 2020 - Cover2
IEEE Power & Energy Magazine - March/April 2020 - 1
IEEE Power & Energy Magazine - March/April 2020 - 2
IEEE Power & Energy Magazine - March/April 2020 - 3
IEEE Power & Energy Magazine - March/April 2020 - 4
IEEE Power & Energy Magazine - March/April 2020 - 5
IEEE Power & Energy Magazine - March/April 2020 - 6
IEEE Power & Energy Magazine - March/April 2020 - 7
IEEE Power & Energy Magazine - March/April 2020 - 8
IEEE Power & Energy Magazine - March/April 2020 - 9
IEEE Power & Energy Magazine - March/April 2020 - 10
IEEE Power & Energy Magazine - March/April 2020 - 11
IEEE Power & Energy Magazine - March/April 2020 - 12
IEEE Power & Energy Magazine - March/April 2020 - 13
IEEE Power & Energy Magazine - March/April 2020 - 14
IEEE Power & Energy Magazine - March/April 2020 - 15
IEEE Power & Energy Magazine - March/April 2020 - 16
IEEE Power & Energy Magazine - March/April 2020 - 17
IEEE Power & Energy Magazine - March/April 2020 - 18
IEEE Power & Energy Magazine - March/April 2020 - 19
IEEE Power & Energy Magazine - March/April 2020 - 20
IEEE Power & Energy Magazine - March/April 2020 - 21
IEEE Power & Energy Magazine - March/April 2020 - 22
IEEE Power & Energy Magazine - March/April 2020 - 23
IEEE Power & Energy Magazine - March/April 2020 - 24
IEEE Power & Energy Magazine - March/April 2020 - 25
IEEE Power & Energy Magazine - March/April 2020 - 26
IEEE Power & Energy Magazine - March/April 2020 - 27
IEEE Power & Energy Magazine - March/April 2020 - 28
IEEE Power & Energy Magazine - March/April 2020 - 29
IEEE Power & Energy Magazine - March/April 2020 - 30
IEEE Power & Energy Magazine - March/April 2020 - 31
IEEE Power & Energy Magazine - March/April 2020 - 32
IEEE Power & Energy Magazine - March/April 2020 - 33
IEEE Power & Energy Magazine - March/April 2020 - 34
IEEE Power & Energy Magazine - March/April 2020 - 35
IEEE Power & Energy Magazine - March/April 2020 - 36
IEEE Power & Energy Magazine - March/April 2020 - 37
IEEE Power & Energy Magazine - March/April 2020 - 38
IEEE Power & Energy Magazine - March/April 2020 - 39
IEEE Power & Energy Magazine - March/April 2020 - 40
IEEE Power & Energy Magazine - March/April 2020 - 41
IEEE Power & Energy Magazine - March/April 2020 - 42
IEEE Power & Energy Magazine - March/April 2020 - 43
IEEE Power & Energy Magazine - March/April 2020 - 44
IEEE Power & Energy Magazine - March/April 2020 - 45
IEEE Power & Energy Magazine - March/April 2020 - 46
IEEE Power & Energy Magazine - March/April 2020 - 47
IEEE Power & Energy Magazine - March/April 2020 - 48
IEEE Power & Energy Magazine - March/April 2020 - 49
IEEE Power & Energy Magazine - March/April 2020 - 50
IEEE Power & Energy Magazine - March/April 2020 - 51
IEEE Power & Energy Magazine - March/April 2020 - 52
IEEE Power & Energy Magazine - March/April 2020 - 53
IEEE Power & Energy Magazine - March/April 2020 - 54
IEEE Power & Energy Magazine - March/April 2020 - 55
IEEE Power & Energy Magazine - March/April 2020 - 56
IEEE Power & Energy Magazine - March/April 2020 - 57
IEEE Power & Energy Magazine - March/April 2020 - 58
IEEE Power & Energy Magazine - March/April 2020 - 59
IEEE Power & Energy Magazine - March/April 2020 - 60
IEEE Power & Energy Magazine - March/April 2020 - 61
IEEE Power & Energy Magazine - March/April 2020 - 62
IEEE Power & Energy Magazine - March/April 2020 - 63
IEEE Power & Energy Magazine - March/April 2020 - 64
IEEE Power & Energy Magazine - March/April 2020 - 65
IEEE Power & Energy Magazine - March/April 2020 - 66
IEEE Power & Energy Magazine - March/April 2020 - 67
IEEE Power & Energy Magazine - March/April 2020 - 68
IEEE Power & Energy Magazine - March/April 2020 - 69
IEEE Power & Energy Magazine - March/April 2020 - 70
IEEE Power & Energy Magazine - March/April 2020 - 71
IEEE Power & Energy Magazine - March/April 2020 - 72
IEEE Power & Energy Magazine - March/April 2020 - 73
IEEE Power & Energy Magazine - March/April 2020 - 74
IEEE Power & Energy Magazine - March/April 2020 - 75
IEEE Power & Energy Magazine - March/April 2020 - 76
IEEE Power & Energy Magazine - March/April 2020 - 77
IEEE Power & Energy Magazine - March/April 2020 - 78
IEEE Power & Energy Magazine - March/April 2020 - 79
IEEE Power & Energy Magazine - March/April 2020 - 80
IEEE Power & Energy Magazine - March/April 2020 - 81
IEEE Power & Energy Magazine - March/April 2020 - 82
IEEE Power & Energy Magazine - March/April 2020 - 83
IEEE Power & Energy Magazine - March/April 2020 - 84
IEEE Power & Energy Magazine - March/April 2020 - 85
IEEE Power & Energy Magazine - March/April 2020 - 86
IEEE Power & Energy Magazine - March/April 2020 - 87
IEEE Power & Energy Magazine - March/April 2020 - 88
IEEE Power & Energy Magazine - March/April 2020 - 89
IEEE Power & Energy Magazine - March/April 2020 - 90
IEEE Power & Energy Magazine - March/April 2020 - 91
IEEE Power & Energy Magazine - March/April 2020 - 92
IEEE Power & Energy Magazine - March/April 2020 - 93
IEEE Power & Energy Magazine - March/April 2020 - 94
IEEE Power & Energy Magazine - March/April 2020 - 95
IEEE Power & Energy Magazine - March/April 2020 - 96
IEEE Power & Energy Magazine - March/April 2020 - Cover3
IEEE Power & Energy Magazine - March/April 2020 - Cover4
https://www.nxtbook.com/nxtbooks/pes/powerenergy_070820
https://www.nxtbook.com/nxtbooks/pes/powerenergy_050620
https://www.nxtbook.com/nxtbooks/pes/powerenergy_030420
https://www.nxtbook.com/nxtbooks/pes/powerenergy_010220
https://www.nxtbook.com/nxtbooks/pes/powerenergy_111219
https://www.nxtbook.com/nxtbooks/pes/powerenergy_091019
https://www.nxtbook.com/nxtbooks/pes/powerenergy_070819
https://www.nxtbook.com/nxtbooks/pes/powerenergy_050619
https://www.nxtbook.com/nxtbooks/pes/powerenergy_030419
https://www.nxtbook.com/nxtbooks/pes/powerenergy_010219
https://www.nxtbook.com/nxtbooks/pes/powerenergy_111218
https://www.nxtbook.com/nxtbooks/pes/powerenergy_091018
https://www.nxtbook.com/nxtbooks/pes/powerenergy_070818
https://www.nxtbook.com/nxtbooks/pes/powerenergy_050618
https://www.nxtbook.com/nxtbooks/pes/powerenergy_030418
https://www.nxtbook.com/nxtbooks/pes/powerenergy_010218
https://www.nxtbook.com/nxtbooks/pes/powerenergy_111217
https://www.nxtbook.com/nxtbooks/pes/powerenergy_091017
https://www.nxtbook.com/nxtbooks/pes/powerenergy_070817
https://www.nxtbook.com/nxtbooks/pes/powerenergy_050617
https://www.nxtbook.com/nxtbooks/pes/powerenergy_030417
https://www.nxtbook.com/nxtbooks/pes/powerenergy_010217
https://www.nxtbook.com/nxtbooks/pes/powerenergy_111216
https://www.nxtbook.com/nxtbooks/pes/powerenergy_091016
https://www.nxtbook.com/nxtbooks/pes/powerenergy_070816
https://www.nxtbook.com/nxtbooks/pes/powerenergy_050616
https://www.nxtbook.com/nxtbooks/pes/powerenergy_030416
https://www.nxtbook.com/nxtbooks/pes/powerenergy_010216
https://www.nxtbook.com/nxtbooks/ieee/powerenergy_010216
https://www.nxtbook.com/nxtbooks/pes/powerenergy_111215
https://www.nxtbook.com/nxtbooks/pes/powerenergy_091015
https://www.nxtbook.com/nxtbooks/pes/powerenergy_070815
https://www.nxtbook.com/nxtbooks/pes/powerenergy_050615
https://www.nxtbook.com/nxtbooks/pes/powerenergy_030415
https://www.nxtbook.com/nxtbooks/pes/powerenergy_010215
https://www.nxtbook.com/nxtbooks/pes/powerenergy_111214
https://www.nxtbook.com/nxtbooks/pes/powerenergy_091014
https://www.nxtbook.com/nxtbooks/pes/powerenergy_070814
https://www.nxtbook.com/nxtbooks/pes/powerenergy_050614
https://www.nxtbook.com/nxtbooks/pes/powerenergy_030414
https://www.nxtbook.com/nxtbooks/pes/powerenergy_010214
https://www.nxtbookmedia.com