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All settings are in primary values or per unit. Set operate level per phase to typically 70% of the
global parameter
UBase level. Set the time delay tTrip=5-20 seconds.
9.6.3.1
Advanced users settings
SEMOD171929-8 v4
For advanced users the following parameters need also to be set. Set the length of the trip
pulse to typical
tPulse=0.15 sec. Set the blocking time tBlock to block Loss of voltage check
(LOVPTUV), if some but not all voltage are low, to typical 5.0 seconds and set the time delay
for enabling the function after restoration
tRestore to 3 - 40 seconds.
9.7
Radial feeder protection PAPGAPC
GUID-831891A3-B5AB-4532-8901-311C541F0ABB v1
9.7.1
Identification
GUID-1B7B3DC5-DD7B-4017-928D-0C41768E94D9 v1
Function description
IEC 61850 identification
IEC 60617 identification
ANSI/IEEE C37.2 device
number
Radial feeder protection
PAPGAPC
U<
27
9.7.2
Application
GUID-7EAA8D3C-F71A-4B97-80C8-31115DF381EE v1
The most common application of the PAPGAPC function is to provide tripping at the remote
end of lines with passive load or with weak end infeed. The function must be included in the
terminal at the weak infeed end of the feeder.
Permissive communication schemes can basically operate only when the protection at the
remote end of a feeder can detect the fault. The detection requires a minimum of fault current,
normally >20% of
Ir.
The fault current can be low due to absence of generated power or low short circuit current of
the source. The fault current can initially be too low due to the fault current distribution.
In this case, the fault current increases when the breaker opens at the strong line end and a
sequential tripping is achieved.
The detection of the fault by an independent tripping zone 1 is then required.
To avoid sequential tripping as described or when zone 1 is not available, the protection
terminal must be provided with this application function.
9.7.3
Setting guidelines
GUID-D0C8F29C-2C8D-4F9A-BB25-1A93E6E7C392 v2
The parameters for PAPGAPC application function are set via the local HMI or Protection and
Control Manager PCM600.
Operation: The function can be set On/Off.
GlobalBaseSel: Used to select a GBASVAL function for reference of base values, primary current
(
IBase), primary voltage (UBase ) and primary power (SBase).
UPhSel<: Faulted phase voltage in % of quadrature phase – phase voltage divided by sqrt (3).
Setting this value to 100% is equivalent to disabling the voltage operation.
Tau: Time constant for reference voltage.
FastOperation: Enabling of fast fault clearing.
Section 9
1MRK 505 343-UEN B
Voltage protection
486
Application manual
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