18.6.3.4 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 (Enabled)
or not (Disabled).
If OperationM = Disabled, 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 = Enabled, waveform (samples) will also be recorded and reported in
graph.
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).
Sequential of events
function has no dedicated parameters.
18.6.3.5 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 (PostFaultrecT and TimeLimit).
1MRK 506 369-UUS - Section 18
Monitoring
Line distance protection REL670 2.2 ANSI 843
Application manual
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