IEEE Power & Energy Magazine - November/December 2020 - 19

The fifth and final theme article is
"On Good Behavior: Inverter-Grid Protections for Integrating Distributed Photovoltaics" and was authored by a broad
team, including Tom Key of the Electric
Power Research Institute, Gefei "Derek"
Kou of Dominion Energy, and Michael
Jensen of Pacific Gas and Electric Company. This expert team takes on the difficult topic of system-protection impacts
resulting from the integration of inverter-based DERs. The article starts with a
description of the types of impacts and
the resulting protection concerns that
can occur, particularly at high penetration levels. Through the presentation of
example protection impacts and utility
surveys focused on protection concerns,
the article addresses issues such as an
open phase on a three-phase line, directtransfer trip requirements, and preferred
interconnection transformer construction. Further, the solutions for many of
these concerns are also given, including

an example of a currently implemented
utility solution that increases the visibility of protection-related issues and communications-enabled control to support
the appropriate mitigation.
The "In My View" column, "Distributed Generation: Leveraging for
Grid Services," authored by Tom Bialek from San Diego Gas and Electric
Company, rounds out this DER issue.
Bialek provides an excellent perspective
on the often-discussed and researched,
but not often-realized, provision of grid
services from DERs. Starting with observed grid challenges, implementation
difficulties, DER adoption history in
California, and the recognition of the
tremendous effort already exerted for
effective DER integration, the argument
is made that much more work is needed.
Without the support of many people,
this issue simply would not have been
possible. Thanks first to Michael Henderson and John Paserba for their en-

couragement, advice, direction, and editorial prowess while pulling this issue
together. The final development of this
issue occurred during the transition of
IEEE Power & Energy Magazine editorin-chief leadership, which was efficient
and seamless. Thanks to Robert Henderson for his excellent review of the
feature articles. Thanks also to the entire
IEEE Power & -Energy Magazine editorial board for their -continued support of
this DER issue. Additional thanks are
due to the 23 authors from 13 organizations in four countries who supplied
articles for this issue. Their hard work
preparing the articles to provide a clear
and understandable picture of their research is evidence of their professionalism and dedication to properly integrating DERs. Finally, thanks to the readers
of IEEE Power & Energy Magazine. We
hope you find this issue enjoyable, informative, and thought-provoking.
p&e

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IEEE Power & Energy Magazine - November/December 2020

Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - November/December 2020