3.4.3
Time synchronization
Time synchronization over IEC 60870-5-103 is supported. This requires that the
IED’s global
Time Sychronization Source
parameter (in
Configuration/Time/
Synchronization/Synch source
) is set to "IEC 60870-5-103" mode. If some other
time synchronization source is configured for the IED, the IEC 60870-5-103 time
synchronization messages are rejected.
3.5
Disturbance recorder file transfer
The IED includes a functionality that converts the IED’s natively captured
disturbance file contents into IEC 60870-5-103 disturbance data. Disturbance files are
also available as standard COMTRADE files through PCM600 or WHMI.
IEC 60870-5-103 disturbance recorder spontaneous Class 1 notification message
(disturbance recorder file directory ASDU 23) can be enabled or disabled via the
setting parameter
DR Notification n
. The default setting is disabled. Purpose of this
notification message is to inform the IEC 60870-5-103 client that the disturbance file
directory has been updated. Usually this means that a new disturbance recording has
been captured and stored by the system. If a disturbance recorder file transfer is not
required from the IED, the notification is also unnecessary.
3.5.1
Disturbance recorder file directory (ASDU 23)
The disturbance recorder files IEC 60870-5-103 identification in the IED is a
sequential 16-bit number starting from 1 at IED reset and incrementing for each new
captured disturbance recorder file.
IEC 60870-5-103 standard defines the disturbance recorder file
identification to be the fault number (FAN), which is the same number
that is generated by ASDU 2 Class 1 events during the same fault. The
IED could theoretically capture several disturbance recorder files
during the same fault, be triggered by a non-protection signal,
triggered externally or triggered periodically. That is why the
disturbance recorder file does not correspond to any particular fault
detected by the IED.
The IEC 60870-5-103 directory information octet SOF bits TP, TEST and OTEV are
not supported by the IED’s native disturbance recorder file system. These bits are
therefore always set to 0. The TM bit is however supported.
The IEC 60870-5-103 disturbance recorder directory structure only allows up to eight
disturbance recorder files to be available in the IED. If the IED’s native disturbance
recorder file system contains more than eight disturbance recorder files, only the 8
latest files are accessible through IEC 60870-5-103 protocol.
Section 3
1MRS757647 C
Vendor-specific implementation
26
620 series
Communication Protocol Manual
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