IEEE Power & Energy Magazine - July/August 2020 - 18

nature of resilience. The authors build
their case based on their extensive experience with the U.K. and Chilean
power systems. By developing a novel
probabilistic risk-based framework to
identify resilient network-enhancement
options, they are able to differentiate
resilience-focused from reliabilityfocused network enhancement alternatives. It is of note that the authors
also implement their framework in the
actual operation and planning of the
Chilean power system, which demonstrates the significant practical value of
their work.
The fourth article, by Martin Braun,
Christian Hachmann, and Jonas Haack,
digs into the details of blackout, restoration, and islanding based on the
concept of resilience. The authors
argue that resilience-based metrics
should be introduced in power system
operation and planning in addition to
the conventional reliability measures.
The authors specifically point out the
impact of digitalization on the cyberphysical resilience of the power system. With the growing penetration and
deployment of information and communication technologies, the physical

grid has been tightly coupled with the
other relevant infrastructure. Improving power system resilience from a
holistic point of view, as the authors
suggest, can result in great benefits by
discovering the weak spots of the system, which can be missed when analyzed in silos. A number of islanding
strategies is further discussed with
numerical examples to illustrate the
crucial role of DG in restoration.
The last article, by Hyde M. Merrill, Md Abid Hossain, and Marc Bodson, makes an effort to quantitively
measure the stress on the system that
causes cascading failures. New metrics are proposed to overcome the
insufficiencies of traditional metrics
and find the "hidden failures" lurking in the system. The authors review
many historical power grid cascading failures and conclude that the
commonly used North American
Electric Reliability Corporation N−1
reliability standards are not enough to
identify grid vulnerabilities and prevent cascading failures. Leveraging
network theory, two new metrics are
presented, namely vulnerability and
criticality. The U.S. Western Intercon-

nection is used to demonstrate the usefulness of the proposed metrics and the
findings they can provide.
I n the "I n My View" colum n,
Yingchen "YC" Zhang and Juan Torres
from the National Renewable Energy
Laboratory shed light on using distributed energy resources (DERs) to
help improve power system resilience.
The authors critically point out the importance of diversifying the resources
employed in grid restoration. The appropriate diversification of relevant
restoration assets can greatly enhance
the preparedness of the system and reduce the risk of a single point of failure.
In this context, DERs including wind,
solar, and storage assets are a natural
fit due to their distributed locations,
versatile operational modes, and locally available energy sources.
We thank all the authors for contributing to this issue of IEEE Power
& Energy Magazine. We would also
like to express our sincere gratitude to
Mike Henderson, editor-in-chief, for
his guidance in preparing the issue.
p&e

from the editor (continued from p. 8)
who provided expert guidance and
readily assisted with reviews of materials, the guest editors who assembled
technical content and reviewed the issues, and the authors who provided
well-written and informative pieces
and patiently reflected multiple rounds
of editorial review.
Cer tain people must be recognized. My friend and lifeline mentor Hyde Merrill assumed the role of
associate editor, "History," at a time
when his help was needed the most.
When he was unable to continue in
that role, John Paserba gladly vol18

ieee power & energy magazine

unteered and has expertly continued
managing our most popular column
and provided outstanding support to
me, the magazine, and PES at large.
A special note of appreciation goes
to Mel Olken, who provided guidance and tutelage. The IEEE publications staff work tirelessly behind the
scenes, but I want to provide a special shout-out to Geri Krolin-Taylor,
who serves as our managing editor;
Janet Dudar, our senior art director;
and Maria Proetto, senior administrator, PES Publications. Our advertisers keep the publication on a sound

financial footing, and you, dear readers, have provided feedback that has
helped move the magazine forward.
I would also like to express a note
of appreciation to my loving family:
Robert C. Henderson, who readily provided editorial assistance; Gabby Henderson, who provided IT support; and
most of all, my wife of over 38 years,
Dorita, who has shown more patience
and support than I could ever deserve.
I look forward to spending less time in
my office and more time with them.
p&e
july/august 2020



IEEE Power & Energy Magazine - July/August 2020

Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - July/August 2020

Contents
IEEE Power & Energy Magazine - July/August 2020 - Cover1
IEEE Power & Energy Magazine - July/August 2020 - Cover2
IEEE Power & Energy Magazine - July/August 2020 - Contents
IEEE Power & Energy Magazine - July/August 2020 - 2
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IEEE Power & Energy Magazine - July/August 2020 - Cover3
IEEE Power & Energy Magazine - July/August 2020 - Cover4
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