Schweitzer Engineering Laboratories, Inc.
SEL-451 Data Sheet
19
Network Connection and Integration
Connect the SEL-451 to Local Area Networks (LANs)
by using the optional Ethernet card. The integrated
Ethernet card supports both copper and/or fiber connec-
tions with failover protection.
Ethernet Card
The optional Ethernet card mounts directly in the
SEL-451. Use popular Telnet applications for easy termi-
nal communications with SEL relays and other devices.
Transfer data at high speeds (10 Mbps or 100 Mbps) for
fast HMI updates and file uploads. The Ethernet card
communicates using File Transfer Protocol (FTP) appli-
cations for easy and fast file transfers.
Provide operations with situational awareness of the
power system by using IEEE C37.118-2005 Standard for
Synchrophasors for Power Systems. Communicate with
SCADA and other substation intelligent electronic
devices (IEDs) by using DNP3 or IEC 61850 logical
nodes and GOOSE messaging.
Choose Ethernet connection media options for primary
and standby connections:
➤
10/100BASE-T Twisted Pair Network
➤
100BASE FX Fiber-Optic Network
Telnet and FTP
Order the SEL-451 with Ethernet communication and
use the built-in Telnet and File Transfer Protocol (FTP)
that come standard with Ethernet to enhance relay com-
munications sessions. Use Telnet to access relay settings,
and metering and event reports remotely using the ASCII
interface. Transfer settings files to and from the relay via the
high-speed Ethernet port through use of FTP.
IEEE C37.118 Synchrophasors
The latest IEEE Synchrophasor Protocol provides a stan-
dard method for communicating synchronized phasor
measurement data over Ethernet or serial media. The
integrated Ethernet card in the SEL-451 provides two
independent connections by using either TCP/IP,
UDP/IP, or a combination thereof. Each connection sup-
ports unicast or multicast options for serving data to one or
multiple clients simultaneously. Each data stream can support
data streams at as fast as 60 frames per second.
DNP3 LAN/WAN
The DNP3 LAN/WAN option provides the SEL-451
with DNP3 Level 2 Outstation functionality over Ether-
net. Custom DNP3 data maps can be configured for use
with specific DNP3 masters. The PTP power profile is
also supported over PRP.
Precision Time Protocol (PTP)
An Ethernet card option with Ports 5A and 5B populated
provides the ability to accept IEEE 1588 Precision Time
Protocol, version 2 (PTPv2) for data time synchroniza-
tion. Optional PTP support includes both the Default and
Power System (C37.238-2011) PTP Profiles.
Figure 25
Network Connection and Integration
SEL-451-5
SEL-3355
SEL-451-5
Protection, Automation, & Control
STANDBY LAN
PRIMARY LAN
Modem
Remote
Access
PTP
PTP
Bus Protection/System Control
Ethernet
Card
Ethernet
Card
Ethernet
Card
Remote
Monitoring
Remote
Control
Local
Control
Communications Processor
SEL-2488 Satellite-Synchronized
Network Clock
Telnet
DNP3
LAN/WAN
PTP
IEC 61850
DNP3 LAN/WAN
PRP
PTP
IEC 61850
DNP3 LAN/WAN
IEEE C37.118
PRP
PTP
SEL-2488