Monitoring & Control
264 PRS-7367
5.10 Fault and Disturbance Recording
This IED provides the fault and disturbance recorder for recording the sampled values of the fault
and disturbance wave when a fault is occurred in the power system. The fault recorder feature
allows you to record selected current and voltage inputs to the protection elements, together with
selected digital signals.
The integral fault recorder has an area of memory specifically set aside for storing disturbance
records. The fault memory of the device is automatically updated with every recording. When the
fault memory is filled completely, the oldest records are overwritten automatically. Thus, the latest
records are always stored safely. The maximum number of time tagged records is 36, contain16
fault disturbance waves, 16 start disturbance waves and 4 manual disturbance waves.
Each fault waveform includes the wave recording data both before and after the fault. Each trigger
element operation will extend the wave recording time, until the appointed time delay is over after
the trigger element restores, or until the maximum number of wave recording points is reached.
5.10.1 Wave Recording File Format
The wave recording file adopts COMTRADE common format, complying with the requirements of
IEC 60255-24. Each COMTRADE record has up to four files associated with it, namely: a title file
(xxxxxxxx.HDR), a configuration file (xxxxxxxx.CFG), a data file (xxxxxxxx.DAT), and an
information file (xxxxxxxx.INF), where information file is optional file. The wave recording files can
be extracted communication with relay.
5.10.2 Fault Wave File
For each fault wave file, the following items are included:
1. Sequence number
Each operation will be recorded with a sequence number in the record and displayed on LCD
screen.
2. Date and time of fault occurrence
The date and time is recorded when a system fault is detected. Time & date stamped by relay real
time clock. The time resolution is 1ms.
3. Relative operating time
An operating time (not including the operating time of output relays) is recorded in the record. The
time resolution is 1ms.
4. Fault information
Including faulty phase, fault location and protection elements
5.10.3 Waveform Recording Duration
A fault waveform contains all analog and digital quantities related to IED such as currents,
voltages, differential current, alarm elements, and binary inputs and etc.
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