Schweitzer Engineering SEL-351P, Quick Start Manual

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Date Code 991201 Distributed Network Protocol (DNP) V3.00 H-11
SEL-351P Manual Técnico
DNP Object Type Index Description
30 105 Fault type (see table for definition).
30 106 Fault location.
30 107 Fault current.
30 108 Fault frequency.
30 109 Fault settings group.
30 110 Fault recloser shot counter.
30 111 - 113 Fault time in DNP format (high, middle, and low 16
bits).
40,41 00 Active settings group.
Binary inputs (objects 1 and 2) are supported as defined by the previous table. Binary inputs 0 -
499 and 1000 - 1023 are scanned approximately once per second to generate events. When time
is reported with these event objects, it is the time at which the scanner observed the bit change.
This may be significantly delayed from when the original source change and should not be used
for sequence-of-events determination. In order to determine an element’s point index, consult
the Relay Word Bits table in
Section 9: Setting the SEL-351P Recloser Control. Locate the
element in question in the table and note the Relay Word row number. From that row number,
subtract the row number of the first Relay Word row (usually 2) and multiply that result by 8.
This is the index of the right-most element of the Relay Word row of the element in question.
Count over to the original element and add that to get the point index. Binary Inputs 500 - 999
are derived from the Sequential Events Recorder (SER) and carry the time stamp of actual
occurrence. Static reads from these inputs will show the same data as a read from the
corresponding index in the 0 - 499 group. Only points that are actually in the SER list (SET R)
will generate events in the 500 - 999 group.
Analog Inputs (objects 30 and 32) are supported as defined by the preceding table. The values
are reported in primary units. Analog inputs 28 - 35, 42 - 57, 64 - 79, 86 - 104, and 106 are
further scaled according to the DECPLM setting (e.g., if DECPLM is 3, then the value is
multiplied by 1000). Analog inputs 58 - 63, 80 - 85, and the even-numbered points in 0 - 7 and
16 - 21 (current magnitudes) are scaled according to the DECPLA setting. The even-numbered
points in 8 - 15 and 22 - 27 (voltage magnitudes) are scaled according to the DECPLV setting.
Analog inputs 36 - 41, 108, and the odd-numbered points in 0 - 27 (angles) are scaled by 100.
The remaining analogs are not scaled. Event-class messages are generated whenever an input
changes beyond the value given by the ANADB setting. The dead-band check is done after any
scaling is applied. The angles (the odd numbered points in 0 - 27) will only generate an event if,
in addition to their dead-band check, the corresponding magnitude (the preceding point) contains
a value greater than the value given by the ANADB setting. Analog inputs are scanned at
approximately a 1-second rate, except for analogs 105 - 113. During a scan, all events generated
will use the time the scan was initiated. Analogs 105 - 113 are derived from the history queue
data for the most recently read fault and do not generate event messages. Analog 105 is a 16-bit
composite value, where the upper byte is defined as follows: