Schweitzer Engineering SEL-351P, Быстрый старт

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Date Code 990215 Standard Event Reports and SER 12-5
SEL-351P Manual Técnico
Fault Location
The relay reports the fault location if the EFLOC setting = Y and the fault locator operates
successfully after an event report is generated. If the fault locator does not operate successfully
or if EFLOC = N (Fault Locator is not enabled), $$$$$$ is listed in the field. Fault location is
based upon the Access Level 2 line impedance settings Z1MAG, Z1ANG, Z0MAG, Z0ANG, and
corresponding line length setting LL. Three-phase voltages need to be applied to the SEL-351P
for proper operation of the fault locator. This requires the optional three-phase potential
transformers be installed in the recloser control. The EZ Level global setting, “True three-phase
voltage connected (Y,N)” must be set to Y (yes), which forces Access Level 2 global setting,
3PVOLT, (three-phase voltages connected) to Y (yes). See the SET command in Table 9.1 and
corresponding Settings Sheet 1 of 23 in
Section 9: Setting the SEL-351P Recloser Control for
information on the line parameter settings.
Targets
The control reports the targets at the rising edge of TRIP. The targets are displayed in binary
format. See
Front-Panel Status and Trip Target LEDs in Section 1: Factory-Set Logic .
Currents
The “Currents (A pri), ABCNGQ:” field shows the currents present in the event report row
containing the maximum phase current. The listed currents are:
Phase (A = channel IA, B = channel IB, C = channel IC)
Neutral ground (N = channel IN)
Calculated residual (I
G
= 3I
0
; calculated from channels IA, IB, and IC)
Negative-sequence (Q = 3I
2
; calculated from channels IA, IB, and IC)
Retrieving Full-Length Standard Event Reports
The latest twenty-eight 15-cycle or fourteen 30-cycle event reports are stored in nonvolatile
memory. Each event report includes four sections:
•
Current, voltage, frequency, contact outputs, optoisolated inputs
•
Protection and control elements
•
Event summary
•
Group, SEL
OGIC
Control Equations, and global settings
Use the EVE command to retrieve the reports. There are several options to customize the report
format. The general command format is:
EVE [n Sx Ly L R A D C]
where:
n Event number (1 - 28) if LER = 15; (1-14) if LER = 30.
Defaults to 1 if not listed, where 1 is the most recent event.