Sub-Function Parameters; Consideration - ABB Relion SAM600 Applications Manual

Section 5
Monitoring
OverTrigLeM , UnderTrigLeM : Over or under trig level, Trig high/low level relative nominal value
for analog input M in percent of nominal value.
5.4.3.4

Sub-function parameters

All functions are in operation as long as Disturbance report is in operation.
Indications
IndicationMaN : Indication mask for binary input N. If set ( Show ), a status change of that
particular input, will be fetched and shown in the disturbance summary on local HMI. If not set
Hide ), status change will not be indicated.
(
SetLEDN : Set red LED on local HMI in front of the IED if binary input N changes status.
Disturbance recorder
OperationM : Analog channel M is to be recorded by the disturbance recorder ( On ) or not ( Off ).
OperationM = Off , no waveform (samples) will be recorded and reported in graph. The input
If
channel can still be used to trig the disturbance recorder.
OperationM = On , waveform (samples) will also be recorded and reported in graph.
If
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.
Event list
Event list (EL) (SOE) function has no dedicated parameters.
5.4.3.5

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 (
• 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 (
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 margin from normal operation values.
Phase voltages are not recommended for trigging.
52
PostRetrig )?
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PostFaultrecT and TimeLimit ).
Switchgear control unit SAM600-IO
Application manual
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