max
cos
max
P
LdAngle a
S
æ ö
=
ç ÷
è ø
EQUATION1623-ANSI V1 EN (Equation 240)
where:
Pmax is the maximal active power transfer during emergency conditions and
Smax is the maximal apparent power transfer during emergency conditions.
The RLd can be calculated according to equation 241:
cos( )RLd ZLoad LdAngle= ×
EQUATION1624-ANSI V1 EN (Equation 241)
The setting of RLd and LdAngle is by default set to 80 ohm/phase and 20 degrees.
Those values must be adapted to the specific application.
3.6.8.3 Setting parameters
Table 70: FMPSPDIS Group settings (basic)
Name
Values (Range) Unit Step Default Description
IBase 1 - 99999 A 1 3000 Base current
VBase 0.05 - 2000.00 kV 0.05 400.00 Base voltage
IMaxLoad 10 - 5000 %IB 1 200 Maximum load for identification of three
phase fault in % of IBase
RLd 1.00 - 3000.00 ohm/p 0.01 80.00 Load encroachment resistive reach in ohm/
phase
LdAngle 5 - 70 Deg 1 20 Load encroachment inclination of load
angular sector
Table 71: FMPSPDIS Group settings (advanced)
Name
Values (Range) Unit Step Default Description
DeltaIMinOp 5 - 100 %IB 1 10 Delta current level in % of IBase
DeltaVMinOp 5 - 100 %VB 1 20 Delta voltage level in % of Vbase
V1Level 5 - 100 %VB 1 80 Pos seq voltage limit for identification of 3-ph
fault
I1LowLevel 5 - 200 %IB 1 10 Pos seq current level for identification of 3-ph
fault in % of IBase
V1MinOp 5 - 100 %VB 1 20 Minimum operate positive sequence voltage
for ph sel
Table continues on next page
1MRK504116-UUS C Section 3
IED application
315
Application manual
To Next Page
Loading...
Need help?
General
