Monitoring - ABB Relion 650 Series Product Manual

Transformer protection RET650
Version 2.2
Degree to radians angle converter DEG_RAD
The degree to radians angle converter (DEG_RAD) function
gives the possibility to convert an input value from degree
angles to radian angles.

11. Monitoring

Measurements CVMMXN, CMMXU, VNMMXU,
VMMXU, CMSQI, VMSQI
The measurement functions are used to get on-line
information from the IED. These service values make it
possible to display on-line information on the local HMI and
on the substation automation system about:
• measured voltages, currents, frequency, active, reactive
and apparent power and power factor
• measured analog values from merging units
• primary phasors
• current sequence components
• voltage sequence components
• positive, negative and zero sequence currents and
voltages
• mA, input currents
• pulse counters
Disturbance report DRPRDRE
Complete and reliable information about disturbances in the
primary and/or in the secondary system together with
continuous event-logging is accomplished by the
disturbance report functionality.
Disturbance report (DRPRDRE), always included in the IED,
acquires sampled data of all selected analog input and
binary signals connected to the function block with a
maximum of 40 analog and 352 binary signals.
The Disturbance report functionality is a common name for
several functions:
• Event list
• Indications
• Event recorder
• Trip value recorder
• Disturbance recorder
• Fault locator
• Settings information
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
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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. In the COMTRADE1999
format it is saved as a header file HDR, a configuration file
CFG, and a data file DAT. In the COMTRADE2013 format, it
is saved as CFF single file format. 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.
IED must be configured with
COMTRADE1999 format for disturbance
recorder communication with
IEC 60870-5-103 protocol.
Event list DRPRDRE
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 ringring-buffer.
Indications DRPRDRE
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
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 1056 time-tagged events.
The event recorder information is available for the
disturbances locally in the IED.
1MRK 504 172-BEN G
M12412-6 v9
M12030-3 v7
M12033-3 v9
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