( )
Old Calculated
S k S 1 k S= × + - ×
EQUATION1959 V1 EN (Equation 73)
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
TD
is settable parameter by the end user which influence the filter properties
Default value for parameter k is 0.00. With this value the new calculated value is
immediately given out without any filtering (that is without any additional delay).
When k is set to value bigger than 0, the filtering is enabled. A typical value for k=0.92
in case of slow operating functions.
8.7.5 Technical data
Table 134: GOPPDOP, GUPPDUP technical data
Function
Range or value Accuracy
Power level (0.0–500.0)% of
SBase
± 1.0% of S
r
at S < S
r
± 1.0% of S at S > S
r
(1.0-2.0)% of
SBase
< ± 50% of set value
(2.0-10)% of
SBase
< ± 20% of set value
Characteristic angle (-180.0–180.0) degrees 2 degrees
Timers (0.010 - 6000.000) s ± 0.5% ± 25 ms
8.8 Accidental energizing protection for synchronous
generator AEGGAPC
8.8.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Accidental energizing protection for
synchronous generator
AEGGAPC U<I> 50AE
8.8.2 Functionality
Inadvertent or accidental energizing of off-line generators has occurred often enough
due to operating errors, breaker head flashovers, control circuit malfunctions, or a
combination of these causes. Inadvertently energized generator operates as induction
1MRK 502 048-UEN A Section 8
Current protection
239
Technical manual
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