IEEE Power & Energy Magazine - July/August 2020 - 17

guest editorial

Jianhui Wang

power system resilience
the golden rule of the future grid

T

THE ELECTRIC POWER SYSTEM
is facing unprecedented challenges
worldwide. Extreme events such as
hurricanes, wildfires, and earthquakes
have fundamentally changed the way
the power grid is designed and operated. Power system planning and operation ought to go above and beyond
the classical reliability indices that
have governed industry practices for
many decades. The fact that extreme
events are of high impact and low frequency (HILF) renders traditional reliability-oriented system-enhancement
measures insufficient and ineffective.
Rather than focusing on routine power
system component failures and outages, resilience specifically refers to the
ability of a system to anticipate, absorb,
react to, and recover from a rare, widespread, quickly changing, and extreme
event scenario that may cause substantial and enduring damage to our society. The potential sources of disruption
can also be multidimensional, ranging from naturally occurring physical
damage to manmade cyberattacks.
This issue of IEEE Power & Energy
Magazine features five articles that focus
on concerns associated with power system resilience. The topics cover a broad
range of areas in power system resilience
with lessons learned and novel solutions
across continents.

In This Issue
The first article, by Hong Chen, Frederick S. (Stu) Bresler III, Michael E.
Digital Object Identifier 10.1109/MPE.2020.2985436
Date of current version: 17 June 2020

july/august 2020

Bryson, Kenneth Seiler, and Jonathon
Monken from PJM Interconnection
in the United States, offers a unique
perspective from a regional transmission operator (RTO). Different from
the more vulnerable distribution grid,
transmission systems have their own
set of challenges due to the scale of the
system, the wide area it covers, and
the multitude of stakeholders involved.
This is particularly true when an electricity market is in place to coordinate
a great number of market participants
and other entities to form a thorough
plan before the event and carry out
an efficient response when the event
takes place.
The authors highlight these issues
by first looking into the operations aspects of bulk power system resilience,
among which fuel security analysis
stands out as an often-overlooked
component of the overall resilience
improvement portfolio. Fuel security
requires a long-term vision to optimize
the generation mix while taking into
account generation technology update
and replacement (e.g., coal-fired units
replaced by natural-gas-fired units), the
various government policy scenarios,
costs, and other considerations to minimize disruptions to fuel supply. The
authors continue with other aspects including long-term infrastructure planning, markets, and cyberphysical security. The article ends with a discussion
on relevant planned activities at PJM.
The second article, by Carsten Roggatz, Michael Power, and Nisheeth
Singh, opens up new opportunities for

power system restoration by considering distribution generation (DG) connected at the distribution networks.
Using DG for restoration in addition
to traditional bulk-level, black-start
units signifies an important and practical technological advancement to best
optimize the value that the increasing
penetration of DG can add to the grid.
The authors comprehensively review the current relevant practices
among European grid operators and
provide a thorough discussion on the
key enablers to implementing such a
framework including 1) observability
and controllability of DG, 2) coordination between the transmission system
operator and the distribution system
operator, 3) command and control, and
4) regulatory support. The authors further explore different scenarios with
various DG control functionalities and
penetration levels. Several restoration
decision-support tools are discussed
as examples for restoration training
and execution.
T h e t h i r d a r t icle, by Ro d r igo
Moreno, Mathaios Panteli, Pierluigi
Mancarella, Hugh Rudnick, Tomás
Lagos, Alejandro Navarro, Fernando
Ordoñez, and Juan Carlos Araneda,
gives insights on long-term planning
issues transitioning from reliability
to resilience. As a result of a successful international collaborative project,
which eventually led to a prestigious
Newton Prize, the authors focus on
two critical requirements for grid resilience enhancement: emphasis on
1) HILF events and 2) the time-varying
ieee power & energy magazine

17



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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