IEEE Power & Energy Magazine - September/October 2015 - 44

WAM systems have delivered key measurements that
have been used to prepare, observe, and improve an adequate
dynamic system behavior.

Pan-European Data
Exchange

Real-Time Phasors
from PMUs

Parameters
Estimator

Series Reactance

Series Reactance

Shunt Susceptance

Line Temperature

Dynamic Thermal
Rating

Power System
Reliability and Safety

figure 4. A logic diagram of a line temperature calculation.

Permanent power system monitoring with the help of WAM systems enables the system operator
to benefit from the support of a
system "scanner" with respect to
overall dynamic system behavior.
For this approach, the most efficient way of data collection and
compilation consists of overlapping relevant measurements from
far away substations of the highly
meshed CE system; see Figure 8.
At a wide area level, PMUbased applications offer a very
useful picture of the system state,
permitting the correlation and synchronization of the most vital information about it. Figure 8 shows a
public web page created by Swissgrid that collects real-time data

12%
10%
Curtailment (%)
8%
6%
4%
2%

Ja
nu
a
Fe ry
2
br
ua 012
ry
2
M
ar 012
ch
2
Ap 012
ril
20
1
M
ay 2
2
Ju 012
ne
20
Ju 12
ly
20
Au
g
Se
us 12
t
pt
em 20
be 12
r2
O
ct
ob 012
N
ov er
em 20
12
b
D
ec er
em 20
be 12
r
Ja
nu 201
2
ar
Fe
y
20
br
1
ua
ry 3
2
M
ar 013
ch
2
Ap 013
ril
20
1
M
ay 3
2
Ju 013
ne
20
Ju 13
ly
20
Au
Se gus 13
t
pt
em 20
be 13
r2
O
ct
ob 013
er
20
13

0%

figure 5. A comparison of curtailment on an overhead line over two years.
44

ieee power & energy magazine

september/october 2015



Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - September/October 2015

IEEE Power & Energy Magazine - September/October 2015 - Cover1
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IEEE Power & Energy Magazine - September/October 2015 - 1
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IEEE Power & Energy Magazine - September/October 2015 - Cover3
IEEE Power & Energy Magazine - September/October 2015 - Cover4
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