Schweitzer Engineering Laboratories SEL-700G Series, Instruction Manual

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4.236
SEL-700G Relay Instruction Manual Date Code 20170814
Protection and Logic Functions
Report Settings (SET R Command)
Event Report Settings
The programmable SEL
OGIC
control equation setting ER is set to trigger event
reports for conditions other than trip conditions. When setting ER sees a
logical 0 to logical 1 transition, it generates an event report (if the SEL-700G
is not already generating a report that encompasses the new transition). For
example ER := R_TRIG 64G1 OR R_TRIG SWING triggers an event report
when either 64G1 or SWING asserts, even if the event does not result in a trip.
Event reports can be 15, 64, or 180 cycles in length, as determined by the LER
setting. The prefault length, PRE, can be set up to (LER-5) cycles. The relay
can hold at least 4, 17, or 72 event reports, depending on the LER setting of
180, 64, and 15 cycles, respectively.
Generator
Autosynchronism
Report
SEL-700G Relays that are equipped with generator synchronism check trigger
the generator autosynchronism report when the SEL
OGIC
control equation
GSRTRG transitions from 0 to 1. The report contains 4800 samples of data,
each containing the analog and digital information shown in Table 4.97. The
resolution and number of pre-trigger data samples are defined by the settings
GSRR and PRESYNC and can be set as necessary.
The relay stores the four latest reports in nonvolatile relay memory. Use the
CGSR command to retrieve the report data. See Figure 4.118 for a sample
graphical display of the report using QuickSet. You can also trigger the report
with the GST command. See Section 7: Communications for more detail on
ASCII commands.
Table 4.94 SET R SER Alias Settings
Setting
Prompt Relay
Word Bit
Alias
Asserted
Text Deasserted
Text
ALIAS1 := PB01 FP_LOCK PICKUP DROPOUT
ALIAS2 := PB02 FP_BRKR_SELECT PICKUP DROPOUT
ALIAS3 := PB03 FP_CLOSE PICKUP DROPOUT
ALIAS4 := PB04 FP_TRIP PICKUP DROPOUT
ALIAS5
–ALIAS20 NA
Table 4.95 Event Report Settings
Setting Prompt Setting Range Setting Name :=
EVENT TRIGGER SEL
OGIC
ER := 0
EVENT LENGTH 15, 64, 180 cyc LER := 15
PREFAULT LENGTH 1–175 cyc
a
a
The range shown is for LER := 180. The generalized range is 1 - (LER-5) cyc.
PRE := 5
NOTE:
Event report data stored in
the relay will be lost when you
change the LER setting. You must
save the data before changing the
setting.
Table 4.96 Generator Autosynchronism Report Settings
Setting Prompt Setting Range
Setting Name :=
Factory Default
GEN SYNC TRG SEL
OGIC
GSRTRG := CLOSEX AND
(25C OR 25AX1 OR 25AX2)
GEN SYNC RPT RES 0.25, 1, 5 cyc GSRR := 0.25
PRE SYNC LEN 1–4799 samples PRESYNC := 4790