SATEC PM180 Operation Manual - Manual (Page 92)

‎Chapter 8 Configuring Recorders Configuring the IEEE 1159 Power Quality Recorder
90 PM180 Substation Automation Unit
used to detect voltage and frequency faults, their typical triggering thresholds and
event durations.
Impulsive transients
Impulsive transients are detected as impulses with a rise time less than 0.5 ms and
duration from 150 us to ½ cycle. The impulse magnitude is measured as the
overshoot voltage magnitude above the normal voltage wave shape. It is referenced
to the nominal peak voltage (1.414 Un).
Sags and swells
A voltage sag or swell is classified as one polyphase event regardless of the shape
and of the number of phases affected (as per IEC 61000-4-30). An event can begin
on one phase and end on another phase. The fault magnitude is recorded separately
for each phase involved. The event duration is measured from the instant at which
the voltage falls/rises below/above the start threshold on one of the phases to that at
which it becomes greater/lower than the end threshold on all affected phases
including a threshold hysteresis.
Voltage Interruptions
The voltage interruption is detected when the voltages on all phases fall below the
interruption threshold (as per IEC 61000-4-30).
Flicker
The flicker is evaluated according to IEC 61000-4-15. The 10-min Pst values are
used to follow and indicate the flicker faults.
Event ID IEEE 1159 category Trigger parameter Reference value Typical
thresholds, %
Event
duration
PQE11 Impulsive transients Instantaneous overshoot voltage Un peak voltage 20-200% 150 us –10 ms
PQE211 Instantaneous sag ½ cycle RMS voltage Un RMS 80-90% < 30 cycles
PQE212 Instantaneous swell ½ cycle RMS voltage Un RMS 110-120% < 30 cycles
PQE221 Momentary interruption ½ cycle RMS voltage Un RMS 0-10% < 3 sec
PQE222 Momentary sag ½ cycle RMS voltage Un RMS 80-90% < 3 sec
PQE223 Momentary swell ½ cycle RMS voltage Un RMS 110-120% < 3 sec
PQE231 Temporary interruption ½ cycle RMS voltage Un RMS 0-10% < 1 min
PQE232 Temporary sag ½ cycle RMS voltage Un RMS 80-90% < 1 min
PQE233 Temporary swell ½ cycle RMS voltage Un RMS 110-120% < 1 min
PQE31 Sustained interruption ½ cycle RMS voltage Un RMS 0-10% > 1 min
PQE32 Undervoltage ½ cycle RMS voltage Un RMS 80-90% > 1 min
PQE33 Overvoltage ½ cycle RMS voltage Un RMS 110-120% > 1 min
PQE4 Voltage unbalance 3-sec negative sequence unbalance No 1-5% Steady state
PQE52 Harmonics THD 3-sec harmonic THD No 5-20% Steady state
PQE53 Interharmonics THD 3-sec interharmonic THD No 2-8% Steady state
PQE6 Voltage fluctuations (flicker) 10-min Pst No 1-5 Steady state
PQE7 Frequency variations 3-sec frequency Nominal frequency 1-6% Steady state
Un – nominal device voltage
PQ Recorder Setup
The IEEE 1159 PQ recorder setup allows you to adjust thresholds and hysteresis for
PQ triggers, to define the waveform and data log options for PQ events, and to
enable or disable the PQ recorder in your device.
To configure the PQ recorder:
1. Select Memory/Log from the Meter Setup menu, and then click on
the PQ Recorder tab.
2. If you want to change the default settings, adjust thresholds and
hysteresis for PQ triggers
3. Select the waveform and data logging options for PQ events
4. Download your setup to the device.