No.
Information
Type of
Informa-
tion
Comments
638
Usy2=
MV
Measured value Usy2
641
P =
MV
P (active power)
642
Q =
MV
Q (reactive power)
643
PF =
MV
Power Factor
644
Freq=
MV
Frequency
645
S =
MV
S (apparent power)
646
F-sy2 =
MV
Frequency fsy2
647
F-diff=
MV
Frequency difference
648
φ-diff=
MV
Angle difference
649
F-sy1 =
MV
Frequency fsy1
684
U0 =
MV
U0 (zero sequence)
Energy
Metered values for active and reactive power are determined in the background by the processor system. They
can be called up at the front of the device, read out via the operating interface using a PC with DIGSI, or trans-
ferred to a central master station via the system interface.
Energy Metering
7VK61 integrates the calculated power as a function of time and then provides the results under the measured
values. The components as listed in
can be read out. The signs of the operating values depend on
the setting at address 1107
P,Q sign
under margin heading“Display of
Measured Values”).
Please take into consideration that 7VK61 is, above all, a protection device. The accuracy of the metered
values depends on the instrument transformers (normally protection core) and the device tolerances. The
metering is therefore not suited for tariff purposes.
The counters can be reset to zero or any initial value (see also SIPROTEC 4 System Description).
Table 2-9
Operational metered values
Measured values
Primary
W
p
+
Active power, output
kWh, MWh, GWh
W
p
–
Active power, input
kWh, MWh, GWh
W
q
+
Reactive power, output
kVARh, MVARh, GVARh
W
q
–
Reactive power, input
kVARh, MVARh, GVARh
Setting Notes
Retrieving Parameters
The SIPROTEC System Description describes in detail how to read out the statistical counters via the device
front panel or DIGSI. The values are added up in direction of the protected object Provided the direction was
configured as “forward” (address 201).
Information List
No.
Information
Type of
Informa-
tion
Comments
-
Meter res
IntSP_Ev
Reset meter
2.9.4
2.9.4.1
2.9.4.2
2.9.4.3
Functions
2.9 Auxiliary Functions
SIPROTEC 4, 7VK61, Manual
167
C53000-G1176-C159-5, Edition 05.2018
Summary of Contents for SIPROTEC 4 7VK61
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