ABB REL670 2.2 IEC, Applications Manual

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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.
10.7.3 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.
t3Ph : Time delay for three phase operation.
IN> : Residual current detection in % of IBase.
ResCurrCheck : Enabling of residual current check for delayed operation at single
phase faults.
Del1PhOp : Enabling of delayed single phase operation.
t1Ph : Time delay for single phase operation.
Del3PhOp : Enabling of delayed three phase operation.
ResCurrOper : Enabling of residual current operation.
tResCurr : Time delay for residual current indication.
1MRK 506 369-UEN B
Section 10
Voltage protection
Line distance protection REL670 2.2 IEC 557
Application manual