GE DR60, Technical Manual

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DR60
63 DR60-TM-EN- 2A
3 Disturbance and Continuous Disturbance Records
The disturbance recorder registers calculated values derived from the current and
voltage signal being applied to the analog channels.
Disturbance records are divided into two types depending on how the register
recording is initiated:
•
Continuously:
Derived measurements are continuously recorded. A new record is created at each hour
rollover. The record size depends on the number of derived measurements selected by
the user. The record can contain up to 128 measurements. The continuous disturbance
recorder has a parameter called Aggregation Period (10,0
– 60,0 min, 0,1 step). The
recorder will create a new record every time the Aggregation Period has elapsed.
•
By trigger:
The disturbance recorder can be triggered by a Boolean equation, by a cross-trigger
signal of another recorder, by a manual trigger using the Web Interface, or by the
triggering of the fault recorder. It is possible to select the derived quantity of triggered
disturbance records. If the quantities are not manually selected, the record will consist
of all the quantities available for measurement. The record size depends of the number
of derived measurements selected by the user.
Continuous and triggered disturbance records share the same mass storage area.
3.1 Recorded Values
The table below presents all the available measurements from where the disturbance
register can record up to 128. Some measurements are divided into 3 different types for
easy configuration. The intention is to divide the measurements into classes of
“importance” and they are: Fundamental, Basic and Other measurements:
Measurement IEC 61850 Reference