S TD S TD S
Old Calculated
= ⋅ + −
( )
⋅1
EQUATION1893-ANSI V1 EN (Equation 395)
Where
S is a new measured value to be used for the protection function
S
old
is the measured value given from the function in previous execution cycle
S
Calculated
is the new calculated value in the present execution cycle
TD is settable parameter
The value of TD=0.92 is recommended in generator applications as the trip delay is
normally quite long.
The calibration factors for current and voltage measurement errors are set % of rated
current/voltage:
IMagComp5, IMagComp30, IMagComp100
VMagComp5, VMagComp30, VMagComp100
IAngComp5, IAngComp30, IAngComp100
The angle compensation is given as difference between current and voltage angle errors.
The values are given for operating points 5, 30 and 100% of rated current/voltage. The
values should be available from instrument transformer test protocols.
3.7.11.3 Setting parameters
Table 114: GOPPDOP (32) Group settings (basic)
Name
Values (Range) Unit Step Default Description
Operation Disabled
Enabled
- - Disabled Operation Disable / Enable
OpMode1 Disabled
OverPower
- - OverPower Operation mode 1
Power1 0.0 - 500.0 %SB 0.1 120.0 Power setting for stage 1 in % of Sbase
Angle1 -180.0 - 180.0 Deg 0.1 0.0 Angle for stage 1
TripDelay1 0.010 - 6000.000 s 0.001 1.000 Trip delay for stage 1
DropDelay1 0.010 - 6000.000 s 0.001 0.060 Drop delay for stage 1
OpMode2 Disabled
OverPower
- - OverPower Operation mode 2
Power2 0.0 - 500.0 %SB 0.1 120.0 Power setting for stage 2 in % of Sbase
Table continues on next page
1MRK504116-UUS C Section 3
IED application
491
Application manual
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