Alstom MiCOM P846, Техническое руководство

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Measurements and Recording P846/EN MR/D
MiCOM P846
(MR) 8-9
MR
Setting Range
Menu Text Default Setting Step Size
Min. Max.
Inputs 1 to 32 Trigger
No Trigger except
Dedicated Trip
Relay O/P’s which
are set to Trigger
L/H
No Trigger, Trigger L/H, Trigger H/L
Any of the digital channels may be selected to trigger the disturbance recorder on either a
low to high or a high to low transition.
Note: The available analog and digital signals will differ between relay
models and so the individual courier database in the SCADA
e and the "Trigger Position"
s
t 33.3% of
this, giving 0.5s pre-fault and 1s post fault recording times.
If a fur ccurs wh taking place, the recorde no r
if the "Trigger Mode" has been set to "Single". How f this has set to "Extended",
t e reset to zero, thereby extending the recording time.
A seen from the , each of the anal annels is ble from ailable
analo els may be mapped to any of the opto isolated
in to a number of internal relay digital signals, such as
p EDs e complete list of these signals found b ing the
available
c
h
d
I to view rbance records they must be extracted
u
C
1.4 M
T alculated power system
q cond basis and can be
v sure ts” columns (up f the relay or via MiCOM S1
M . The 46 relay is able to d display the following quantities
a :
•
d Cu nts
•
•
es and Currents
•
y Qu es
•
C
•
Peak, Fixed and Rolli ues
T
unde
relevant protection function.
Communications section (P846/EN SC) should be referred to when
determining default settings etc.
The pre and post fault recording times are set by a combination of the "Duration" and
"Trigger Position" cells. "Duration" sets the overall recording tim
sets the trigger point as a percentage of the duration. For example, the default setting
show that the overall recording time is set to 1.5s with the trigger point being a
ther trigger o ilst a recording is r will ig
been
re the trigge
ever, i
he post trigger timer will b
s can be menu og ch selecta the av
g inputs to the relay. The digital chann
puts or output contacts, in addition
rotection starts, L tc. The may be y view
settings in the relay menu or via a setting file in MiCOM S1. Any of the digital
hannels may be selected to trigger the disturbance recorder on either a low to high or a
igh to low transition, via the "Input Trigger" cell. The default trigger settings are that any
edicated trip output contacts (e.g. relay 3) will trigger the recorder.
t is not possible the distu locally via the LCD;
sing suitable software such as MiCOM S1. This process is fully explained in the SCADA
ommunications section (P846/EN SC).
easurements
he relay produces a variety of both directly measured and c
uantities. These measurement values are updated on a per se
iewed in the “Mea men to four) o
easurement viewer
s summarized below
P8 measure an
Phase Voltages an rre
Phase to Phase Voltages
Sequence Voltag
Power and Energ antiti
Rms. Voltages and urrents
ng Demand Val
here are also measured values from the protection functions, which are also displayed
r the measurement columns of the menu; these are described in the section on the