13.8.2.6
Technical data
Table 451:
LAPPGAPC (37_55)technical data
Function
Range or value
Accuracy
Operate value, low active
power
(2.0-100.0)% of SBase
± 1,0% of S
n
Reset ratio, low active
power
<105%
-
Transient overreach, low
active power
<20 % at τ = 100 ms
-
Operate value, low power
factor
0.00-1.00
± 1,0% of S
n
Reset ratio, low power
factor
<105%
-
Transient overreach, low
power factor
<20 % at τ = 100 ms
-
Timers
(0.000-60.000) s
± 0.5% ± 10 ms
Critical impulse time, low
active power
10 ms typically at 1.2 to 0.8xP
set
-
Impulse margin time, low
active power
10 ms typically
-
13.8.3
Compensated over and undervoltage protection COUVGAPC
(59_27)
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Compensated over and undervoltage
protection
COUVGAPC
-
59_27
13.8.3.1
Introduction
Compensated over and undervoltage protection (COUVGAPC, 59_27) function
calculates the remote end voltage of the transmission line utilizing local measured
voltage, current and with the help of transmission line parameters, that is, line
resistance, reactance, capacitance and local shunt reactor. For protection of long
transmission line for in zone faults, COUVGAPC, (59_27) can be incorporated with
local criteria within direct transfer trip logic to ensure tripping of the line only under
abnormal conditions.
Section 13
1MRK505222-UUS C
Scheme communication
834
Technical reference manual
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