Directional Overpower Protection Goppdop - ABB REG670 Applications Manual

1MRK 502 071-UEN -
9.11
9.11.1
9.11.2
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
Application manual
( )
= × + - ×
S k S 1 k S
Old Calculated
EQUATION1893 V1 EN
Where
S is a new measured value to be used for the protection function
S is the measured value given from the function in previous execution cycle
old
S is the new calculated value in the present execution cycle
Calculated
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.

Directional overpower protection GOPPDOP

Identification
Function description
Directional overpower protection
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.
Current protection
IEC 61850 IEC 60617
identification identification
GOPPDOP
P >
2
DOCUMENT172362-IMG158942
V2 EN
Section 9
(Equation 224)
ANSI/IEEE C37.2
device number
32
381