Siemens 7SJ85 - Settings; Information List

i
i
NOTE
In case of power-system incidents, especially in case of transmission incidents and influence of voltage-
stabilizing measures via power-electronic components (reactive-power compensation through SVC), the
magnitude and the phase angle of the voltage can change. Sensitive settings can lead to overfunction.
Therefore, it is reasonable to block the Rate of Frequency Change Protection if other protection func-
tions, for example, residual voltage or negative-sequence voltage, pick up. To do this, use the blocking
input
>Block stage and connect it via CFC.
Settings
Addr. Parameter C Setting Options Default Setting
General
_:13171:101 General:Minimum
voltage
3.000 V to 175.000 V 37.500 V
_:13171:137 General:Measuring
window
2 periods to 5 periods 5 periods
df/dt falling1
_:13231:1 df/dt falling1:Mode
•
off
•
on
•
test
off
_:13231:2 df/dt falling1:Operate &
flt.rec. blocked
•
no
•
yes
no
_:13231:3 df/dt falling1:Threshold 0.100 Hz/s to 20.000 Hz/s 3.000 Hz/s
_:13231:4 df/dt falling1:Dropout
differential
0.02 Hz/s to 0.99 Hz/s 0.10 Hz/s
_:13231:6 df/dt falling1:Operate
delay
0.00 s to 60.00 s 1.00 s
df/dt rising1
_:13201:1 df/dt rising1:Mode
•
off
•
on
•
test
off
_:13201:2 df/dt rising1:Operate &
flt.rec. blocked
•
no
•
yes
no
_:13201:3 df/dt rising1:Threshold 0.100 Hz/s to 20.000 Hz/s 3.000 Hz/s
_:13201:4 df/dt rising1:Dropout
differential
0.02 Hz/s to 0.99 Hz/s 0.10 Hz/s
_:13201:6 df/dt rising1:Operate
delay
0.00 s to 60.00 s 1.00 s
Information List
No.
Information Data Class
(Type)
Type
General
_:13171:300 General:Undervoltage blocking SPS O
_:13171:301 General:df/dt MV O
Group indicat.
_:4501:55 Group indicat.:Pickup ACD O
_:4501:57 Group indicat.:Operate ACT O
6.35.5
6.35.6
Protection and Automation Functions
6.35 Rate of Frequency Change Protection
SIPROTEC 5, Overcurrent Protection, Manual 789
C53000-G5040-C017-8, Edition 07.2017