Table of Contents
Advertisement
1MRK 505 370-UEN D
OverTrigOpM , UnderTrigOpM : Over or Under trig operation, Disturbance report may trig for
high/low level of analog input M (
OverTrigLeM , UnderTrigLeM : Over or under trig level, Trig high/low level relative nominal value
for analog input M in percent of nominal value.
14.6.3.4
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. However,
If
Trip value, pre-fault and fault value will be recorded and reported. The input 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.
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.
14.6.3.5
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 (
Busbar protection REB670
Application manual
On ) or not ( Off ).
PostRetrig )?
GUID-B0D40F6D-3CE4-4FF3-81B4-B453FDD389CB v1
PostFaultrecT and TimeLimit ).
Section 14
Monitoring
M12179-389 v3
M12179-448 v4
M12179-446 v5
M12179-444 v4
M12179-442 v3
M12179-440 v3
M12179-420 v6
375
Advertisement
Table of Contents
