9.24
SEL-700G Relay
Instruction Manual
Date Code 20170814
Analyzing Events
Event Reporting
Stator Ground Event
Report (EVE GND
Command)
This report is available in SEL-700G models with Slot
E
= 72/74/76. These
models have the 100% Stator Ground Protection elements (64G). Refer to
100% Stator Ground Protection Elements on page 4.38 for details on these
elements.
The ground event report includes:
➤
Analog quantities:
➢
VN1–generator neutral fundamental rms voltage
magnitude in volts primary.
➢
VP3–generator terminal third harmonic rms voltage
magnitude in volts primary.
➢
VN3–generator neutral third harmonic rms voltage
magnitude in volts primary.
➤
Digital states of stator ground elements plus the status of base
model digital inputs and outputs.
➤
Event summary.
➤
Relay settings
Use the EVE GND n command (n is the event number) to retrieve the reports.
The relay defaults to n = 1 if the event number is not specified. The event
report rows show data every ¼ cycle. Refer to the example EVE GND event
report in Figure 9.9 to view the data.
[13]
.........rrr..b ..r .. .. .... ........ .r .... . * . .. .. .. ... . .bb .....
.........rrr..b ..r .. .. .... ........ .r .... . * . .. .. .. ... . .bb .....
.........rrr..b ..r .. .. .... ........ .r .... . * . .. .. .. ... . .bb .....
.........rrr..b ..r .. .. .... ........ .r .... . * . .. .. .. ... . .bb .....
[14]
.........rrr..b ..r .. .. .... ........ .r .... . * . .. .. .. ... . .bb .....
.........rrr..b ..r .. .. .... ........ .r .... . * . .. .. .. ... . .bb .....
.........rrr..b ..r .. .. .... ........ .r .... . * . .. .. .. ... . .bb .....
.........rrr..b ..r .. .. .... ........ .r .... . * . .. .. .. ... . .bb .....
[15]
.........rrr..b ..r .. .. .... ........ .r .... . * . .. .. .. ... . .bb .....
.........rrr..b ..r .. .. .... ........ .r .... . * . .. .. .. ... . .bb .....
.........rrr..b ..r .. .. .... ........ .r .... . * . .. .. .. ... . .bb .....
.........rrr..b ..r .. .. .... ........ .r .... . * . .. .. .. ... . .bb .....
Figure 9.8
Example Standard 15-cycle Digital Event Report (EVE D X
Command) 1/4 Cycle Resolution (Continued)
=>>
EVE GND <Enter>
SEL-700G Date: 07/29/2016 Time: 13:52:41.136
GENERATOR RELAY
Serial Number=ABCDEF012345678
FID=SEL-700G-X296-V0-Z005002-D20160725 CID=7E7D
O
6 TN I u
4 66 N t
Voltages (Volts Pri) GG44 1 13
VP3 VN3 VN1 12GG 2 2
[1]
2974.4 1002.6 6664.5 **.. . ..
2976.2 1003.1 6667.3 **.. . ..
2976.2 1003.1 6665.6 **.. . ..
2979.5 1005.4 6667.4 **.. . ..
[2]
2973.8 1003.7 6664.7 **.. . ..
2975.3 1004.6 6668.4 **.. . ..
2974.3 1003.8 6666.3 **.. . ..
2978.0 1005.7 6668.2 **.. . ..
Figure 9.9
Example 15-cycle Stator Ground Event Report (EVE GND)
1/4 Cycle Resolution
Содержание SEL-700G Series
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