Siemens 7SJ82 - Page 232

Operational Measured Values
The operational measured values are always present in the Capacitor bank side function group and cannot be
deleted. If a 3-phase voltage measuring point is connected, the following table shows the total scope. If only
current is connected, only the first 3 lines apply.
Table 5-9 Possible Operational Measured Values of the Capacitor Bank Side Function Group
Measured Values Primary Secon-
dary
% Referenced to
I
A
, I
B
, I
C
Phase currents A A Rated operating current of the primary system
3I0 Calculated residual current A A Rated operating current of the primary system
I
N
Measured residual current A A Rated operating current of the primary system
V
A
, V
B
, V
C
Phase-to-ground voltages kV V Rated operating current of the primary
system/√3
V
AB
, V
BC
, V
CA
Phase-to-phase voltages kV V Rated operating voltage of the primary
system
V
0
Calculated zero-sequence voltage kV V Rated operating current of the primary
system/√3
V
r
Measured neutral-point displace-
ment voltage
kV V Rated operating current of the primary
system/√3
f Frequency Hz Hz Rated frequency
P Active power
(total power)
MW – Rated operating voltage and rated operating
current of the primary system
√3 · V
rated
· I
rated
Q Reactive power
(total power)
MVAr – Rated operating voltage and rated operating
current of the primary system
√3 · V
rated
· I
rated
S Apparent power
(total power)
MVA – Rated operating voltage and rated operating
current of the primary system
√3 · V
rated
· I
rated
Cos φ Active factor (abs) (abs) 100 % corresponds to c
os φ = 1
P
A
, P
B
, P
C
Phase-related active power MW – Active power of the phase
V
rated phsx
· I
rated phsx
Q
A
, Q
B
, Q
C
Phase-related reactive power MVAr – Reactive power of the phase
V
rated phsx
· I
rated phsx
S
A
, S
B
, S
C
Phase-related apparent power MVA – Apparent power of the phase
V
rated phsx
· I
rated phsx
If a V-3ph measuring point was connected to the Capacitor bank side function group, voltage and phase
measurements are available.
The energy measurements are not predefined. If necessary, you must load them from the Global DIGSI 5
library.
Depending on the protection and supervision functions used, additional function measurements may be avail-
able. The function values are listed in the information list of the appropriate protection or supervision func-
tion (see chapter 6 Protection and Automation Functions).
Function-Group Types
5.5 Function-Group Type Capacitor Bank Differential Protection
232 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017