7
7.2 Fault Recorders
76 Digital Fault Recorder, SIMEAS R-PMU, Manual
E50417-H1076-C360-A5, Release 10.2012
7.2.2 Transient Phasor Recorder (TPR)
The use of the Transient Phasor Recorder (TPR) enables the analysis of oscillations of electrical
characteristic values (e. g., fluctuations of the active and reactive power in power supply
systems). Possible applications are described in chapter 2, Applications, of this manual.
The TPR records the voltage and current curves, the derived values (e. g, active and reactive
power) of the fundamental component, binary signals and process values in cycles when a fault
occurs. For this purpose, the user defines trigger limits and recording times using the OSCOP P
parameterization software. The input signals are analyzed according to the preset trigger
conditions and recorded if the limit values are exceeded or not reached.
The essential difference to the Transient Analog Recorder is the cycle-based determination of
the measured and derived values, as well as a longer recording time. The fault record contains
the prefault time, the trigger time and the recorded fault. The trigger cause is also stored.
The following trigger functions can be parameterized for the Transient Phasor Recorder:
Level trigger Min/Max
Gradient trigger
Binary trigger
Cross trigger
Manual trigger
External trigger
Network trigger
The fault records are stored on the mass storage device of the SIMEAS R-PMU. The maximum
memory space on the storage device for storing the fault records is defined in the parameteri-
zation. Once 90 % of the parameterized memory capacity have been reached, the oldest
recordings will be deleted, thus ensuring that the occupancy level is no more than 80 %. The size
of the mass storage device ensures that up to several hundred fault records can be stored
depending on the configuration.
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