ABB Relion REC615, Техническое руководство

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Any external or internal digital signal of the protection relay which can be
dynamically mapped can be connected to the binary channels of the disturbance
recorder. These signals can be, for example, the start and trip signals from
protection function blocks or the external binary inputs of the protection relay. The
connection is made with dynamic mapping to the binary channel of the disturbance
recorder using, for example, SMT of PCM600. It is also possible to connect several
digital signals to one binary channel of the disturbance recorder. In that case, the
signals can be combined with logical functions, for example AND and OR. The name
of the binary channel can be configured and modified by writing the new name to
the
Channel id text parameter of the corresponding binary channel.
Note that the
Channel id text parameter is used in COMTRADE configuration files as
a channel identifier.
The recording always contains all binary channels of the disturbance recorder. If one
of the binary channels is disabled, the recorded state of the channel is continuously
FALSE and the state changes of the corresponding channel are not recorded.
The corresponding channel name for disabled binary channels in the COMTRADE
configuration file is Unused BI.
To enable or disable an analog or a binary channel of the disturbance recorder, the
Operation parameter of the corresponding analog or binary channel is set to "on" or
"off".
The states of manual triggering and periodic triggering are not included in the
recording, but they create a state change to the
Periodic triggering and Manual
triggering status parameters, which in turn create events.
The
TRIGGERED
output can be used to control the indication LEDs of the protection
relay. The
TRIGGERED
output is TRUE due to the triggering of the disturbance
recorder, until all the data for the corresponding recording has been recorded.
The IP number of the protection relay and the content of the
Bay name
parameter are both included in the COMTRADE configuration file for
identification purposes.
8.2.4 Application
The disturbance recorder is used for post-fault analysis and for verifying the correct
operation of protection relays and circuit breakers. It can record both analog and
binary signal information. The analog inputs are recorded as instantaneous values
and converted to primary peak value units when the protection relay converts the
recordings to the COMTRADE format.
COMTRADE is the general standard format used in storing disturbance
recordings.
The binary channels are sampled once per task execution of the disturbance
recorder. The task execution interval for the disturbance recorder is the same as
for the protection functions. During the COMTRADE conversion, the digital status
values are repeated so that the sampling frequencies of the analog and binary
channels correspond to each other. This is required by the COMTRADE standard.
The disturbance recorder follows the 1999 version of the COMTRADE
standard and uses the binary data file format.
1MRS758755 C Measurement functions
REC615 & RER615
Technical Manual
621