IEEE Power & Energy Magazine - January/February 2016 - 126

table 1. TC57 working groups.
Working Group

Title

Specification(s)

Tele-Control Protocols Compatible with ISO and CCITT Standards

IEC 60870

Power System IED Communication and Associated Data Models

IEC 61850

Energy Management System Application Program Interface

IEC 61970

System Interfaces for Distribution Systems

IEC 61968

Data and Communication Security

IEC 62210

Framework for Deregulated Electricity Market Communications

IEC 62325

Communications Systems for Distributed Energy Resources

IEC 62350

Hydroelectric Power Plants-Communication Monitoring and Control

IEC 62344

Interoperability within TC57 in Long Term

IEC/TR 62357

Interfaces Relevant to Systems Connected to the Electrical Grid

IEC 14543
ISO 16484-5
ISO 14543-4
IEC 61158/IEC 61784
IEC 14908.1

Source: M. Joe Zhou, The Future of the CIM and Related Standards, 22 Sept. 2005.

the group approached International Electrotechnical commission (IEc) Technical
committee (Tc) 57, Power Systems Management and Associated Information Exchange. A new working group, wg13, was
appointed to start this work in primarily in
the transmission operations domain, but the
application of the cIM to distribution operations and market communications quickly
followed with the establishment of wg14,
Distribution Management Systems Interfaces, and wg16, Market communications. other working groups followed later
that incorporated the cIM semantic model
into their work as well. Tc57 has expanded
to include many working groups that are
based on the cIM, as shown in Table 1.
Today, the cIM is composed of a
series of standards comprising a single,
unified UML semantic model and multiple profiles developed in these different working groups defining specific
information exchanges between applications/systems/devices in support of
business processes in transmission,
distribution, and markets.
Another significant milestone was
reached with the establishment of the
cIM Users group (cIMug) in 2005, as
a subgroup of the UcA International

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Users group, to provide a forum in
which users, consultants, and suppliers could cooperate and leverage the
International IEc cIM international
standards to advance interoperability
across the utility enterprise. The primary purpose of this user group is to share
technology basics, best practices, and
technical resources while advancing interoperability for the utility enterprise.
The cIM Users group is focused on
helping its members obtain the benefits of adapting IEc Tc57 modeling
standards for all utility operations on a
global basis.
In 2006, EPrI initiated the cIM
for planning models with the objective of developing a common power
system network model that both operations and planning groups can use
as a basis for information exchange.
David Becker, Margaret goodrich,
and Terry Saxton put significant effort to make sure the outcome of
the project was considered in the
IEc standards. Later in 2008, EPrI
launched the cIM for dynamics
models project to develop solutions
to enable the exchange of dynamics
models. In 2008 UcTE (Union for

the co-ordination of Transmission of
Electricity) in Europe decided to use
the cIM-based data exchange format
and joined the international efforts
of EPrI projects, cIMug, and the
IEc. chavdar Ivanov coordinated the
efforts to bring the requirements of
European Transmission System operators into existing projects and develop cIM extensions to meet these
requirements. with the creation of
the European network of Transmission System operators for Electricity
(EnTSo-E) in 2009, these activities
expanded. EnTSo-E is now organizing interoperability tests to prove
IEc standards as well as conformity
testing on software applications.
In summary, the efforts went
from an IEEE task force that wanted
to see a new EMS architecture, to an
EPrI project that wanted to design
a new API, to today's cIM semantic
model and interface definitions that
address the ever-growing need for
interoperability between all the systems identified on the nIST Smart
grid road Map.
p&e

january/february 2016

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