ABB REG670 - Directional Overpower Protection GOPPDOP

( )
1
Old Calculated
S k S k S= × + - ×
EQUATION1893 V1 EN (Equation 224)
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
k is settable parameter
The value of k=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:
IAmpComp5, IAmpComp30, IAmpComp100
UAmpComp5, UAmpComp30, UAmpComp100
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.
9.11 Directional overpower protection GOPPDOP
9.11.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Directional overpower protection GOPPDOP
P >
2
DOCUMENT172362-IMG158942
V2 EN
32
9.11.2 Application
The task of a generator in a power plant is to convert mechanical energy available as
a torque on a rotating shaft to electric energy.
1MRK 502 071-UEN - Section 9
Current protection
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062 381
Application manual