IEEE Power & Energy Magazine - July/August 2019 - 56

Substations
for Future HVdc
Grids

W

©ISTOCKPHOTO.COM/TARRAS79

WITH THE INCREASED INTEGRATION OF RENEWable energy generation, high-voltage direct current (HVdc)
will become more prevalent in the power system. Anticipated annual growth rates are in the range of 7-10%. While
most systems in operation and under construction are pointto-point connections, the first multiterminal HVdc systems
have already been commissioned. As a next step, HVdc
grids are being considered as a cost-effective solution to
transmit power. These HVdc grids are expected to gradually develop from existing point-to-point links, mirroring

the development of ac grids throughout the 20th century.
Such HVdc grids will be an integral part of the power system, operating as a separate transmission layer of the future
hybrid ac/dc network.
DC substations will constitute an integral part of HVdc
grids. These substations will differ from the typical dc converter station of existing point-to-point connections and from
ac substations. In this article, we discuss the similarities and
differences between dc substations and their ac counterparts
in terms of layout, technologies, and requirements.

By Dirk Van Hertem, Willem Leterme, Geraint Chaffey,
Mudar Abedrabbo, Mian Wang, Firew Zerihun,
and Mike Barnes

Digital Object Identifier 10.1109/MPE.2019.2909006
Date of publication: 18 June 2019

56

ieee power & energy magazine

1540-7977/19©2019IEEE

july/august 2019



IEEE Power & Energy Magazine - July/August 2019

Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - July/August 2019

Contents
IEEE Power & Energy Magazine - July/August 2019 - Cover1
IEEE Power & Energy Magazine - July/August 2019 - Cover2
IEEE Power & Energy Magazine - July/August 2019 - Contents
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IEEE Power & Energy Magazine - July/August 2019 - Cover3
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