Channel number used for the remaining 32 analog signals are numbers in the private
range 64 to 95.
Binary signals, 128-channels: for each channel the user can specify a FUNCTION
TYPE and an INFORMATION NUMBER.
Disturbance upload
All analog and binary signals that are recorded with disturbance recorder can be
reported to the master. The last eight disturbances that are recorded are available for
transfer to the master. A successfully transferred disturbance (acknowledged by the
master) will not be reported to the master again.
When a new disturbance is recorded by the IED a list of available recorded
disturbances will be sent to the master, an updated list of available disturbances can be
sent whenever something has happened to disturbances in this list. For example, when
a disturbance is deleted (by other client, for example, SPA) or when a new disturbance
has been recorded or when the master has uploaded a disturbance.
Deviations from the standard
Information sent in the disturbance upload is specified by the standard; however, some
of the information are adapted to information available in disturbance recorder in the
IED series.
This section describes all data that is not exactly as specified in the standard.
ASDU23
In ‘list of recorded disturbances’ (ASDU23) an information element named SOF
(status of fault) exists. This information element consists of 4 bits and indicates
whether:
• Bit TP: the protection equipment has tripped during the fault
• Bit TM: the disturbance data are currently being transmitted
• Bit TEST: the disturbance data have been recorded during normal operation or
test mode.
• Bit OTEV: the disturbance data recording has been initiated by another event than
start
The only information that is easily available is test-mode status. The other information
is always set (hard coded) to:
TP
Recorded fault with trip. [1]
TM Disturbance data waiting for transmission [0]
OTEV Disturbance data initiated by other events [1]
Section 18 1MRK502052-UEN B
Station communication
1058
Technical manual
To Next Page
Loading...
