Measurement; Functional Description - Siemens SIPROTEC 4 7VK61 Manual

No. Information
1028 Σ IL2 =
1029 Σ IL3 =
1030 Max IL1 =
1031 Max IL2 =
1032 Max IL3 =
2895 AR #Close1./1p=
2896 AR #Close1./3p=
2897 AR #Close2./1p=
2898 AR #Close2./3p=

Measurement

2.9.3
2.9.3.1

Functional Description

Display of Measured Values
Depending on the ordering code, connection of the device and configured protection functions, only some of
the operational measured values listed in
measured if the phase-to-earth voltage inputs are connected. The displacement voltage 3 U
multiplied with √3 – if U
U |. This requires the three voltage inputs phase-to-earth to be connected. The zero-sequence voltage U
L3
cates the voltage between the delta center and earth.
If the device features synchronism and voltage check and if, when configuring the functions (address 135)
these functions were set as Enabled and the parameter U4 transformer (address210) to Usy2 transf.,
you can read out the characteristic values (voltages, frequencies, differences).
The power and operating values upon delivery are set such that power in line direction is positive, active
components in line direction and inductive reactive components in line direction are positive. The same
applies for the power factor cosφ. It is occasionally desired to define the power draw from the line (e.g. as
seen from the consumer) positively. Using parameter address 1107 P,Q sign the signs for these compo-
nents can be inverted.
The computation of the operational measured values is also executed during an existent system fault in inter-
vals of approx. 0.5 s.
Table 2-8
Measured values
Phase currents
, Ι , Ι
Ι
L1 L2 L3
3Ι - calculated Earth current
0
Earth current
3Ι - measured
0
Positive and negative sequence compo-
Ι1, Ι2
nent of currents
U , U , U Phase-to-earth voltages
L1-E L2-E L3-E
U , U , U Phase-to-phase voltages
L1-L2 L2-L3 L3-L1
3U Displacement Voltage
0
U Zero-sequence voltage
0
U , U Positive and negative sequence compo-
1 2
nent of voltages
SIPROTEC 4, 7VK61, Manual
C53000-G1176-C159-5, Edition 05.2018
Type of
Informa-
tion
VI
VI
VI
VI
VI
VI
VI
VI
VI
Table 2-8
is connected – or calculated from the phase-to-earth voltages 3U
en
Operational measured values of the local device
Comments
Accumulation of interrupted current L2
Accumulation of interrupted current L3
Max. fault current Phase L1
Max. fault current Phase L2
Max. fault current Phase L3
No. of 1st AR-cycle CLOSE commands,1pole
No. of 1st AR-cycle CLOSE commands,3pole
No. of higher AR-cycle CLOSE commands,1p
No. of higher AR-cycle CLOSE commands,3p
may be available. Phase-to-earth voltages can only be
Primary secon- % referred to
dary
A A
Rated operational current
A A
Rated operational current
A A
Rated operational current
A A
Rated operational current
kV V
Rated operational voltage / √3
kV V
Rated operational voltage
kV V
Rated operational voltage / √3
kV V
Rated operational voltage / √3
kV V
Rated operational voltage / √3
Functions
2.9 Auxiliary Functions
is the e-n voltage
0
= |U + U +
0 L1 L2
indi-
0
1)
1)
3)1)
1)
2)
2)
2)
2)
2)
165