ABB Relion 650 Series Technical Manual page 471

1MRK 506 326-UUS B
13.9 Sequential of events
13.9.1 Functionality
Continuous event-logging is useful for monitoring the system from an overview perspective and is
a complement to specific disturbance recorder functions.
The sequential of events logs all binary input signals connected to the Disturbance report
function. The list may contain up to 1000 time-tagged events stored in a FIFO-buffer.
13.9.2 Function block
The Sequential of events has no function block of it's own.
13.9.3 Signals
13.9.3.1 Input signals
The Sequential of events logs the same binary input signals as configured for the Disturbance
report function.
13.9.4 Operation principle
When a binary signal, connected to the disturbance report function, changes status, the sequential
of events function stores input name, status and time in the sequential of events in chronological
order. The list can contain up to 1000 events from both internal logic signals and binary input
channels. If the list is full, the oldest event is overwritten when a new event arrives.
The list can be configured to show oldest or newest events first with a setting on the local HMI.
The sequential of events function runs continuously, in contrast to the event recorder function,
which is only active during a disturbance.
The name of the binary input signal that appears in the event recording is the user-defined name
assigned when the IED is configured. The same name is used in the disturbance recorder function,
indications and the event recorder function.
The sequential of events is stored and managed separate from the disturbance report
information.
13.9.5 Technical data
Table 409: DRPRDRE technical data
Function
Buffer capacity
Resolution
Accuracy
Line distance protection REL650
Technical manual
Maximum number of events in the list
© Copyright 2011 ABB Power Grids. All rights reserved
Value
1000
1 ms
Depending on time synchronizing
Section 13
Monitoring
IP14585-1 v4
M12412-6 v7
M12536-3 v4
M12537-16 v3
M12411-6 v4
IP11531-1 v1
M12700-1 v4
465