Application And Setting Notes Qsum Trig - Siemens SIPROTEC 5 Manual

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
yes
no
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
yes
no
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.
7.5.4.5

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
on
off
test
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
positive
SIPROTEC 5, Fault Recorder, Manual
C53000-G5040-C018-5, Edition 11.2017
Description
The positive gradient of the sum active power is monitored for exceeding
the set values.
The positive gradient of the sum active power is not monitored for
exceeding the set values.
Description
The negative gradient of the sum active power is monitored.
The negative gradient of the sum active power is not monitored.
Description
The Trigger Qsum function block is activated and the sum reactive power is
monitored according to the set trigger parameters.
The Trigger Qsum function block is deactivated.
The Trigger Qsum function block is activated for test purposes.
Description
This setting value has no influence on the trigger thresholds.
Fault Recorder
7.5 Trigger Functions 3-Phase
339