19.10
SEL-400 Series Relays
Instruction Manual
Date Code 20171006
Remote Data Acquisition
IEC 61850-9-2 Sampled Values (SV)
scribed merging unit. Refer to the
Section 9: ASCII Command Reference
in the
SEL-421-7 Instruction Manual
for more information on the
CFG CTNOM
com-
mand.
SV Subscribers, such as the SEL 421-7 SV Subscriber Relay, must be configured
to subscribe to 9-2LE-compliant SV streams to enable any protection functions.
When configured via Port 5 settings, all phases (A, B, and C) of a current or volt-
age terminal must come from an SV stream, and terminals cannot be mapped
more than once. Because of this, SEL SV relays that use Port 5 SV configuration
can subscribe to as many as four SV streams from one or more merging units.
When configured via Architect, which allows the selection of individual phases
from each SV stream, SEL SV relays can subscribe to as many as seven SV
streams.
Once SV subscriptions are configured and are being received, the SV subscriber
relay provides a suite of protection functionality. Please refer to the specific prod-
uct instruction manual for a list of available protection functions.
Note that IEC 61850-9-2LE only covers the publication and subscription of
remote analog data. To communicate digital input and output data or controls,
IEC 61850 GOOSE must be configured and optimized on either the process bus
or the station bus.
SV Subscriber Configuration
Architect provides support for the configuration of the SEL SV subscriber via a
GUI. This interface provides the most flexible configuration of SV publications,
including the creation of customized SV datasets. This mechanism is very similar
to the configuration of GOOSE publications. For more detailed information, see
IEC 61850 Configuration on page 17.22
.
Figure 19.10
SEL-421-7 SV Subscriber Relay, 4U Rear Panel
Summary of Contents for SEL-421-4
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