Sel SEL-451-6 - Functional Overview; SV Network Operation; TiDL System Operation

SEL-451-6 Data Sheet Schweitzer Engineering Laboratories, Inc.
4
Functional Overview
SV
The SEL-451-6 SV Subscriber Relay subscribes to data
streams that are published by merging units, such as the
SEL-421-7 SV Publisher or SEL-401 Protection, Auto-
mation, and Control Merging Unit. The SEL-421-7 SV
Publisher provides full backup protection while the
SEL-401 can provide basic directional overcurrent and
breaker failure protection in the absence of communica-
tion. Using the process bus, the SEL-421-7 SV Publisher
or SEL-401 can provide voltage and current information
to multiple relays that subscribe to SV. The data may be
synchronized using Precision Time Protocol (PTP).
TiDL
The SEL-451-6 TiDL Relay receives and automatically
synchronizes data streams from connected and commis-
sioned SEL-TMU devices. The TiDL technology does
not require an external time source for local relay protec-
tion functions.
Figure 1 Functional Overview
ENV
25
50BF
5150
50BF
5150
79
81
SEL-451-6
27 59
32
67
DSS Inputs
Process Bus
Mapped BK1
Currents
Mapped 52A1
Statuses
Mapped 52A2
Statuses
Mapped
Voltages
Mapped BK2
Currents
ANSI NUMBERS/ACRONYMS AND FUNCTIONS
25 Synchronism Check
27 Undervoltage
32 Over- and Underpower
50 Overcurrent
50BF Dual Breaker Failure Overcurrent
51 Time-Overcurrent
52PB Trip/Close Pushbuttons*
59 Overvoltage
67 Directional Overcurrent
79 Autoreclosing
81 (O, U) Over- and Underfrequency
ADDITIONAL FUNCTIONS
16 SEC Access Security (Serial, Ethernet)
85 RIO SEL MIRRORED BITS Communications
BRM Breaker Wear Monitor
DFR Event Reports
ENV SEL-2600 RTD Module*
HBL Harmonic Blocking
HIZ
High-Impedance Fault Detection Arc Sense
Technology (AST)*
LGC SELOGIC Control Equations
LOC Fault Locator
MET High-Accuracy Metering
PMU Synchrophasors
RTU Remote Terminal Unit*
SBM Station Battery Monitor
SER Sequential Events Recorder
SIP Software-Invertible Polarities
* Optional Feature
Note: Both copper and fiber-optic Ethernet ports are available.
LGC
DFRBRM
MET PMU
SER
SBM
SIP
HBL HIZ
49
Five-port Ethernet card ordering option depicted.
4
EIA-232
2
Ethernet
Station Bus
(Ports 5C, 5D)
1
IRIG-B
2
Ethernet
Process Bus
(Ports 5A, 5B)
1
Ethernet
Enginnering
Access
(Port 5E)
16
S
E
C
Figure 2 SV Network
Process Bus
q
q
Time synchronization
is required for SV
communications. Time
synchronization can be
done over a process
bus or station bus
Figure 3 SEL TiDL System
T-Protocol