Ametek TR-2100, Operation Manual

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TR-2100 User Manual 7
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Sequence of Events Recorder
All transitions on the digital inputs of the TR-2100 are recorded and can be displayed with a
disturbance or logger record. The time resolution is 1 ms. Input point and time filtering are
available to limit the number of events displayed. Digital data is also available with transient
records.
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Stability Monitor
A powerful feature of the TR-2100 is the optional ability to trigger and record differential
phasor measurements. Because the inputs are sampled at regular intervals, the absolute angle
of the positive sequence voltage vector can be computed very accurately. This value is
compared with the angle from a remote location, normally the far end of a transmission line.
Because the two TR-2100s can be time locked together, the difference in phase angle is used
as a measure of system stability. The recorder communications conforms to IEEE 1344 -
1995.
As an alternative, individual disturbance records can be recovered and compared in Display
Station Analysis. This allows voltages, power flow etc. to be compared at several points in a
network. The TR-2000 can also communicate with other equipment that supports the IEEE
1344 – 1995 standard.
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Real Time Metering & Monitoring
As well as triggering and logging instruments, the TR-2100 includes the ability to view
analogue and digital inputs and compute values in near real time. Measured values and
waveforms can be seen locally or remotely. These can replace or act as back-up systems for:
Waveform
oscilloscope
Panel meters
Annunciation panel
Vector displays
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Fault Locator
Based on the information in a transient record of a line fault and a model of the transmission
line impedance, the distance-to-fault can be calculated. Source and remote end impedances,
remote end in-feed and mutual coupling are used to compute a more accurate distance.
The source, remote and line impedances may be entered in sequence component, per phase
or per unit (PU) form. The fault distance is computed several times during the period of the
fault and the results averaged. The fault impedance is also returned.
The fault impedance can be used with a complex impedance model to locate the source of a
fault in a distribution network.