IEEE Electrification Magazine - December 2015 - 3

mode to be expected is not overheatauthors introduce induced electric
The final article, "GICs in Future
ing of transformers or malfunction of
field modeling and GICs modeling
Large-Scale Power Grids" by Liu et al.,
electronics, as some had feared, but
tools and discuss the effect of GMDs
comes from the North China Electric
rather the excessive reactive power
on large-system planning studies.
Power University. GIC observations in
demand and massive harmonics that
"Geomagnetic Disturbance" by Qiu et
China are discussed based on the
were produced by GICs-saturated
al. is third and is from the American
authors' extensive field measurepower transformers.
Electric Power (AEP).
ments throughout the country. The
The harmonic curAEP shares its experiarticle also assumes a global perspecWe have become
rents are multiples of
ence in a number of artive in its discussion of GICs issues
more susceptible to
60 Hz, and they flow
eas, including GICs
with the future large-scale power grid.
to the lowest-resismonitoring, GICs modSpace limitations kept us from
the effects of GMDs.
tance voltage-supeling and its impacts,
including many other worthy articles
porting capacitors in
and GMD operating
on research and development in the
the grid. Overcurrents and subseprocedures. The article also discusses
field of geomagnetic disturbances and
quent capacitor trips were the main
mitigating the impacts of potential
their effects on power grids. However,
cause of the Quebec blackout. UnderGMD attacks.
our objective is to give viewers a practistanding how much harmonic curThe next article is "Mitigating Geocal introduction to the most recent and
rent is generated from different
magnetic Disturbances" by Sun et al. It
ongoing activities from leading power
power transformers is no easy task,
describes how Dominion Virginia Power
industry experts in this special edition.
and neither is understanding how
(DVP) developed very practical soluRead the issue with this question
the harmonic flow affects intercontions for equipment hardening and
in mind: Are we ready for the next
nected grids. Our state-of-the-art
system operations. As an industry
solar storm?
solution is far from satisfactory due
leader in many power-related areas,
to the lack of sufficient measurement
DVP actively shares its findings and
or visibility to those harmonics.
best practices with
This issue of IEEE Electrification
the power industry.
Magazine features six articles coverThe article also outing a wide range of global views on
lines future needs in
GICs. The authors, from the power
the areas of monitorindustry as well as academia, are
ing, modeling, and
experts in their fields, providing great
field testing of GICs.
Liquid Cold Plates
insight into the latest technology
The fifth article,
Brazed Manufacturing, Friction Stir Welding
breakthroughs, best practices, and
"Real-Time ManageExtrusions With Welding, Tube Cold Plates
successful efforts. Boteler provides a
ment of Geomagnetic
Forged Pins With Welding
brief introduction to the geomagnetic
Disturbances" by Marti
phenomena and their impact on
and Yiu, is a guide of
power grids in the "Technology Leadoperational responses
ers" column.
to GMD events. In this
The first article, "Impact of GICs
article, the engineering
on Power Transformers" by Girgis
experience of Hydro
and Vedante, provides a qualitative
One's real-time GMD
and quantitative analysis of the
management system
effect of GICs on power transformteam is introduced
ers. It demonstrates how the halfthrough an informacycle saturated transformers absorb
tive delineation of a
reactive power and inject harmonic
GICs monitoring netcurrents into the power system.
work configuration, esMoreover, the thermal effects of
timation of transformGICs on power transformers are also
er hot-spot heating,
analyzed to quantify the extent of
techniques for calcudamage possible.
lating the GMD-inWe Dissipate Heat
The second article by Shetye and
duced geoelectric field,
Heat Sinks, Heat Pipes, Vapor Chambers, Liquid Cold Plates,
Extruded, Machined, Forged, Casting
Overbye is "Modeling and Analysis of
and operator training
Thermal Designs, Simulation, Analysis, Assemblies
GMD Effects on Power Systems." The
tool design.
IEEE Electrific ation Magazine / D EC EM BE R 2 0 1 5

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Table of Contents for the Digital Edition of IEEE Electrification Magazine - December 2015

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