IEEE Power & Energy Magazine - May/June 2019 - 4

from the editor

Michael Henderson

HVdc technology
a bright future ahead

Digital Object Identifier 10.1109/MPE.2019.2896685
Date of publication: 17 April 2019

4

ieee power & energy magazine

image licensed by ingram publishing

H

HigH-voltage dc (Hvdc) development has a bright future ahead. When
fully coordinated with other equipment
and integrated with the overall system,
this versatile technology provides the
ability to control real and reactive power, regulate frequency, improve stability
performance, interconnect asynchronous systems, economically transfer
power through long distances, bypass
network congestion and inject power
where needed, use long underground or
submarine installations, transmit power
across constrained rights-of-way, and
limit short circuit contributions in areas nearing maximum allowable fault
contributions. the number of proposals for Hvdc projects has been growing worldwide. the iSo New england
system alone has seen several proposals
for interconnections with neighboring
systems and for internal facilities.
applications of recent advances
in technology present many new and
exciting opportunities for Hvdc as an
economical and reliable choice for improving power systems. valve technologies can operate at higher voltages with
greater reliability than in previous generations, and the applications of voltagesource converters continue to advance.
the recently developed capability to
network Hvdc affords system planners
new options for making system improvements. the reduced time frames for conducting studies and the quality of study
results have improved substantially with
modern study techniques that provide ad-

ditional confidence in the use of innovative and complex controls. New proposals can be simulated throughout a wide
array of possible system conditions to
gain insight, which is an improvement
compared with past methods that relied
on learning mostly through experience.

In This Issue
our guest editor, Brian Johnson, has
collected articles by authors representing 10 countries. the issue describes
state-of-the-art developments in Hvdc,
including the following:
✔ ac-to-dc line conversion that can
provide an economic alternative
to obtaining new rights-of-way
for needed system improvements
✔ current trends and projects that
illustrate state-of-the-art developments in Hvdc and mediumvoltage applications
✔ system resilience achieved
through Hvdc controls that reflect cybersecurity requirements

✔ Hvdc interconnection studies

in France using electromagnetic transient simulations and
real-time hardware-in-the-loop
simulations
✔ Hvdc planning studies in South
Korea that considered complex
control interactions among several Hvdc and flexible ac transmission system installations using a hybrid simulator
✔ protection schemes for Hvdc
grids that use new technologies
and reflect design philosophies
that can be very different from
traditional ac protection methods
✔ dc circuit breaker development
that protects facilities and improves system reliability
✔ applications to subtransmission
systems that include conversion
of ac lines to dc and the use of
dc networks.
the "in My view" column presents
a brief history of Hvdc and a vision of
may/june 2019



IEEE Power & Energy Magazine - May/June 2019

Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - May/June 2019

Contents
IEEE Power & Energy Magazine - May/June 2019 - Cover1
IEEE Power & Energy Magazine - May/June 2019 - Cover2
IEEE Power & Energy Magazine - May/June 2019 - Contents
IEEE Power & Energy Magazine - May/June 2019 - 2
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IEEE Power & Energy Magazine - May/June 2019 - Cover3
IEEE Power & Energy Magazine - May/June 2019 - Cover4
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