Consideration - ABB RES670 Applications Manual

Section 16
Monitoring
16.6.3.5
276
If OperationM = Off, no waveform (samples) will be recorded and reported in
graph. However, Trip value, pre-fault and fault value will be recorded and reported.
The input channel can still be used to trig the disturbance recorder.
If OperationM = On, waveform (samples) will also be recorded and reported in
graph.
Setting information
SetInfoInDrep: Parameter used to enable or disable the settings information in
disturbance header.
Event recorder
Event recorder (ER) function has no dedicated parameters.
Trip value recorder
ZeroAngleRef: The parameter defines which analog signal that will be used as
phase angle reference for all other analog input signals. This signal will also be
used for frequency measurement and the measured frequency is used when
calculating trip values. It is suggested to point out a sampled voltage input signal,
for example, a line or busbar phase voltage (channel 1-30).
Event list
Event list (EL) (SOE) function has no dedicated parameters.

Consideration

The density of recording equipment in power systems is increasing, since the
number of modern IEDs, where recorders are included, is increasing. This leads to
a vast number of recordings at every single disturbance and a lot of information has
to be handled if the recording functions do not have proper settings. The goal is to
optimize the settings in each IED to be able to capture just valuable disturbances
and to maximize the number that is possible to save in the IED.
The recording time should not be longer than necessary (PostFaultrecT and
TimeLimit).
• Should the function record faults only for the protected object or cover more?
• How long is the longest expected fault clearing time?
• Is it necessary to include reclosure in the recording or should a persistent fault
generate a second recording (PostRetrig)?
Minimize the number of recordings:
• Binary signals: Use only relevant signals to start the recording that is,
protection trip, carrier receive and/or start signals.
• Analog signals: The level triggering should be used with great care, since
unfortunate settings will cause enormously number of recordings. If
nevertheless analog input triggering is used, chose settings by a sufficient
1MRK 511 407-UEN C
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Phasor measurement unit RES670 2.2 IEC
Application manual
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