GTC Automates Substation IEDs
and Improves the Flow of Information
Scope
231 substations, 300 to 700Kv
702 protection relays
40 SMP Gateways
Protocol and Devices
SEL 121,221,321,251,311,321,351,387 and 587,
DNP3, TEJAS, ABB MDAR, ALSTOM, USI DFR,
HATHAWAY DFR.
In Service: 2003
www.cooperpowereas.com
About GTC
Georgia Transmission Corporation (GTC) is a not-forprofit cooperative owned by and serving 39 electric
membership corporations (EMCs) in Georgia. GTC
provides reliable and competitively priced electric
transmission and associated services to its memberowners. GTC owns more than 2,500 miles of
transmission line and has access to approximately
16,000 miles of transmission line through Georgia's
Integrated Transmission System.
www.gatrans.com
GTC’s Requirements
GTC needed a solution to integrate all substation
IEDs, both modern and legacy devices. This solution
needed to perform protocol translation, data
concentration and time synchronization.
The Solution
Cooper Power Systems provided GTC with Cybectec
SMP Gateways. The SMP Gateway provides the
interface between the various IEDs and the master
control systems. Acting as a protocol translator, the
SMP Gateway simplifies the integration of devices
from various manufacturers by providing data to the
control system in their own protocol such as DNP3 or
TEJAS.
The data concentration capability of the SMP Gateway
reduces the total system complexity. Instead of being
connected to each individual device, the control
systems need only be connected to the
SMP Gateways.
The Challenge
In 2003, Georgia Transmission Corporation (GTC)
deployed the Event Manager module of Yukon IED
Manager Suite to retrieve the event files and
waveforms produced by the SEL relays in its
substations. Event Manager uses the Frame Relay
network to perform scheduled acquisition of data and
event files from the relays and store the data in a
Microsoft SQL Server database. GTC now provides
more than 40 key users with real-time access to fault
information from more than 700 relays in
232 substations.
Event Manager had amply demonstrated the benefits
of using a Frame Relay communication infrastructure.
GTC's next step was to integrate a substation
gateway. Now with a high number of relays connected
to the network, GTC was looking for a way to simplify
communications, reduce bandwidth usage and further
improve response times to problems.
Quebec City
730 Commerciale Street, Suite 200
Saint-Jean-Chrysostome, Quebec
Canada G6Z 2C5
Technical Support:
P: +1.418.834.0009
support@cybectec.com
Montreal
1290 St. Denis Street, Suite 300
Montreal, Quebec
Canada H2X 3J7
Sales:
P: +1.514.845.6195
sales@cybectec.com
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©2009 Cooper US, Inc. All Rights Reserved
B1100-07402 • April 2009 • Supercedes 10/08
The SMP Gateway's passthrough communication
mode simplifies maintenance and engineering
operations by providing a single point of access to all
substation devices.
Furthermore, the SMP Gateway is designed to
support Event Manager, already implemented at GTC.
Since the SMP Gateway is already connected to all
devices in the substation, it can immediately detect
and retrieve event and waveform files from the relays
when they become available.
In addition to the scheduled polling mode, Cybectec
SMP Gateways feature file-pushing capability, and
thus, immediately push up significant events to Event
Manager on a more real-time basis.