Siemens SIPROTEC 5, Manual

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Parameter: dM/dt Rise Active - dM/dt Rise (/Filter Time) dM/dt Rise Hysteresis - Filter Time
•
Default setting
(_:9901:103) dM/dt rise active
=
no
•
Default setting
(_:9901:107) dM/dt rise (/Filter time)
=
34.641 W
•
Default setting
(_:9901:115) dM/dt rise hysteresis
=
0.980 p.u.
•
Default setting
(_:9901:112) Filter time
=
2 periods
With the
dM/dt rise active
parameter, you activate the gradient trigger in order to monitor the positive
gradients of the sum active power using the set filtering time (input in periods).
Parameter Value Description
yes
The positive gradient of the sum active power is monitored for exceeding
the set values.
no
The positive gradient of the sum active power is not monitored for
exceeding the set values.
The hysteresis is preset at the factory to 0.980 p.u. (equal to 2 %) of the parameter
dM/dt rise (/Filter
time)
and can be adjusted.
Parameter: dM/dt Drop Active - dM/dt Drop (/Filter Time) - dM/dt Drop Hysteresis - Filter Time
•
Default setting
(_:9901:104) dM/dt drop active
=
no
•
Default setting
(_:9901:108) dM/dt drop (/Filter time)
=
34.641 W
•
Default setting
(_:9901:116) dM/dt drop hysteresis
=
0.980 p.u.
•
Default setting
(_:9901:112) Filter time
=
2 periods
With the
dM/dt drop active
parameter, you activate the gradient trigger in order to monitor the negative
gradients of the sum active power using the set filtering time (input in periods).
Parameter Value Description
yes
The negative gradient of the sum active power is monitored.
no
The negative gradient of the sum active power is not monitored.
The hysteresis is preset at the factory to 0.980 p.u. (equal to 2 %) of the parameter
dM/dt drop (/Filter
time)
and can be adjusted.
Application and Setting Notes Qsum Trig
Parameter: Mode
•
Default setting
(_:9961:1) Mode
=
off
With the
Mode
parameter, you activate the trigger for normal operation (On) or the test mode (Test).
Parameter Value Description
on
The Trigger Qsum function block is activated and the sum reactive power is
monitored according to the set trigger parameters.
off
The Trigger Qsum function block is deactivated.
test
The Trigger Qsum function block is activated for test purposes.
Parameter: Power Direction
•
Default setting
(_:9961:111) Power direction
=
positive
With the
Power direction
parameter, you can trigger on negative powers if the parameter is set to
nega-
tive
.
Parameter Value Description
positive
This setting value has no influence on the trigger thresholds.
7.5.4.5
Fault Recorder
7.5 Trigger Functions 3-Phase
SIPROTEC 5, Fault Recorder, Manual 339
C53000-G5040-C018-5, Edition 11.2017