Schweitzer Engineering Laboratories SEL-700G Series, Instruction Manual

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SEL-700G Relay Instruction Manual Date Code 20170814
Protection and Logic Functions
Group Settings (SET Command)
Set FSYNCST and VSYNCST to individually initiate automatic frequency
and voltage matching, respectively. For example, FSYNCST := IN301
activates frequency matching when IN301 momentarily asserts. You can also
use the ASCII command AST to activate both frequency and voltage
matching simultaneously. Use the ASCII command ASP to stop the
autosynchronizer function; see AST Command (Start Autosynchronizer) and
ASP Command (Stop Autosynchronizer) in Section 7: Communications. Relay
Word bits FSYNCACT and VSYNCACT indicate that frequency and voltage
matching logic, respectively, are active. Set the maximum active time allowed
for the frequency and the voltage matching logic by setting FSYNCT and
VSYNCT as necessary. The frequency, phase angle, and voltage matching
features are described in the following text.
Frequency Matching
Refer to Figure 4.116 for the functional block diagram of the frequency
matching function.
Table 4.49 Autosynchronism Settings
Setting Prompt Setting Range
Setting Name :=
Factory Default
Description
AUTO SYNC EN NONE, DIG EAUTO := NONE Autosynchronism enable
FREQ SYNC TIMER 5–3600 sec FSYNCT := 100 Frequency matching Timer
FREQ ADJ RATE 0.01–10.00 Hz/s FADJRATE := 0.10 Frequency adjustment rate (Governor)
FREQ PULS INTRVL 1–120 s FPULSEI := 5 Frequency pulse interval
FREQ PULS MIN 0.02–60 sec FPLSMIND := 0.10 Frequency pulse minimum duration
FREQ PULS MAX 0.10–60 sec FPLSMAXD := 1.00 Frequency pulse maximum duration
KICK PULS INTRVL 1–120 sec KPULSEI := 5 Kick pulse interval
KICK PULS MIN 0.02–2.00 sec KPLSMIND := 0.02 Kick pulse minimum duration
KICK PULS MAX 0.02–2.00 sec KPLSMAXD := 0.04 Kick pulse maximum duration
FMATCH START SEL
OGIC
FSYNCST := 0 Frequency matching start SEL
OGIC
VOLT SYNC TIMER 5–3600 sec VSYNCT := 100 Voltage matching timer
VOLT ADJ RATE 0.01–30.00 V/s VADJRATE := 1.00 Voltage adjustment rate (Exciter/Voltage Regulator)
VOLT PULS INTRVL 1–120 sec VPULSEI := 5 Voltage pulse interval
VOLT PULS MIN 0.02–60.00 sec VPLSMIND := 0.10 Voltage pulse minimum duration
VOLT PULS MAX 0.10–60.00 sec VPLSMAXD := 1.00 Voltage pulse maximum duration
VMATCH START SEL
OGIC
VSYNCST := 0 Voltage matching start SEL
OGIC