The Disturbance report function is characterized by
great flexibility regarding configuration, starting
conditions, recording times, and large storage capacity.
A disturbance is defined as an activation of an input to
the AnRADR or BnRBDR function blocks, which are set to
trigger the disturbance recorder. All connected signals
from start of pre-fault time to the end of post-fault time
will be included in the recording. Disturbance record will
have visible settings from all function instances that are
configured in the application configuration tool.
Every disturbance report recording is saved in the IED in
the standard Comtrade format as a reader file HDR, a
configuration file CFG, and a data file DAT. The same
applies to all events, which are continuously saved in a
ring-buffer. The local HMI is used to get information
about the recordings. The disturbance report files can
be uploaded to PCM600 for further analysis using the
disturbance handling tool.
Event list DRPRDRE
M12412-6 v9
Continuous event-logging is useful for monitoring the
system from an overview perspective and is a
complement to specific disturbance recorder functions.
The event list logs all binary input signals connected to
the Disturbance recorder function. The list may contain
up to 5000 time-tagged events stored in a ring-buffer.
Indications DRPRDRE
M12030-3 v7
To get fast, condensed and reliable information about
disturbances in the primary and/or in the secondary
system it is important to know, for example binary
signals that have changed status during a disturbance.
This information is used in the short perspective to get
information via the local HMI in a straightforward way.
There are three LEDs on the local HMI (green, yellow and
red), which will display status information about the IED
and the Disturbance recorder function (triggered).
The Indication list function shows all selected binary
input signals connected to the Disturbance recorder
function that have changed status during a disturbance.
Event recorder DRPRDRE
M12033-3 v8
Quick, complete and reliable information about
disturbances in the primary and/or in the secondary
system is vital, for example, time-tagged events logged
during disturbances. This information is used for
different purposes in the short term (for example
corrective actions) and in the long term (for example
functional analysis).
The event recorder logs all selected binary input signals
connected to the Disturbance recorder function. Each
recording can contain up to 150 time-tagged events.
The event recorder information is available for the
disturbances locally in the IED.
The event recording information is an integrated part of
the disturbance record (Comtrade file).
Trip value recorder DRPRDRE
M12128-3 v7
Information about the pre-fault and fault values for
currents and voltages are vital for the disturbance
evaluation.
The Trip value recorder calculates the values of all
selected analog input signals connected to the
Disturbance recorder function. The result is magnitude
and phase angle before and during the fault for each
analog input signal.
The trip value recorder information is available for the
disturbances locally in the IED.
The trip value recorder information is an integrated part
of the disturbance record (Comtrade file).
Disturbance recorder DRPRDRE
M12156-3 v13
The Disturbance recorder function supplies fast,
complete and reliable information about disturbances in
the power system. It facilitates understanding system
behavior and related primary and secondary equipment
during and after a disturbance. Recorded information is
used for different purposes in the short perspective (for
example corrective actions) and long perspective (for
example functional analysis).
The Disturbance recorder acquires sampled data from
selected analog and binary signals connected to the
Disturbance recorder function (maximum 40 analog and
352 binary signals). The binary signals available are the
same as for the event recorder function.
The function is characterized by great flexibility and is
not dependent on the operation of protection functions.
It can record disturbances not detected by protection
functions. Up to ten seconds of data before the trigger
instant can be saved in the disturbance file.
The disturbance recorder information for up to 200
disturbances are saved in the IED and the local HMI is
used to view the list of recordings .
Event function
M12805-6 v11
When using a Substation Automation system with LON
or SPA communication, time-tagged events can be sent
at change or cyclically from the IED to the station level.
These events are created from any available signal in the
IED that is connected to the Event function (EVENT). The
EVENT function block is used for LON and SPA
communication.
Line differential protection RED670
1MRK 505 379-BEN N
Hitachi Power Grids 51
© Copyright 2017 Hitachi Power Grids. All rights reserved
To Next Page
Loading...
