IEEE Electrification Magazine - March 2015 - 93

Viewpoint

(continued from page 96)

x Maximize supply security-use

the latest safety and security
standards to maximize the security of supply.

Participants
The project is to be implemented on a
turnkey basis and is scheduled to be
completed within three years. Work
started in 2010 with a feasibility study
done by SCI and subcontractor
ENOVA that determined the project
scope and, once approval was given
by EDL, completed the detailed project
engineering design.
Figure 1. For reclosers, EDL selected G&W Electric Viper-LT units.
During the feasibility study stage,
GE Digital Energy (Montreal, Quebec,
x vacuum interrupters fully encapthis project, EDL selected GE's GENe
Canada) provided functional specificasulated in a cycloaliphatic epoxy
DMS distribution management softtions for a supervisory control and
system
ware system. GENe is a suite of applicadata acquisition (SCADA)/distribution
x a manual open mechanical block
tions that includes analysis functions to
management system (DMS), while
on the reclosers for operator safety
increase situational awareness of users
G&W Electric (Bolingbrook, Illinois), the
x solid dielectric insulation to provide
and operators beyond what is available
leading supplier of reclosers in North
a maintenance-free installation
with SCADA telemetry, detecting
America through its agent ENOVA Inx compatibility with the GE DGCR
potentially unsecure
tegration Company
control
conditions and auto(Nonthaburi, ThaiThe recloser's
x light weight and compact size for
matically warning
land), provided funcmagnetic actuator
ease of installation
the user of undesirtional specifications
system provides for
x a single control cable that brings all
able or dangerous
for reclosers and polelocal and remote
current, breaker status, and trip/
effects of proposed
mounted load break
close information into the control
switching actions via
switches to SCI for
operation in the event
x an automation-ready design that
preswitching validause in developing
that the ac source
simplifies conversion for any
tion. Its fault detection,
their specifications
power is lost or
future automation requirements.
isolation, and restorafor the proposal.
interrupted.
The recloser's magnetic actuator
tion (FDIR) function
Project Scope
system provides for local and remote
automatically deterThe project scope
mines the location of
included supply, installation, testing,
faults using fault data available from
and commissioning of SCADA/DMS,
modern relays and fault detectors to
115/22-kV substation equipment, and
recommend switching steps to isolate
22-kV pole-mounted load break switchthe fault and restore customers.
es and reclosers.

Hardware
Software
The foundation of grid automation is
the software, where all the intelligence
resides; supervisory control and data
acquisition, protection, and communications are all driven by software. For

On the hardware side, EDL selected
G&W Electric Viper-LT reclosers
(Figure 1) and overhead SF6-insulated
load break switches/sectionalizers
(Figure 2). These offered reliable performance with

Figure 2. EDL chose G&W Electric overhead SF6-insulated load break switches/
sectionalizers.

IEEE Electrific ation Magazine / MARCH 2 0 1 5

93



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