Siemens SIPROTEC 4 7UT6 Series Manual page 291

Please note that the available functions depend on the ordered device version as well as the configured
assignments in accordance with General. Voltage-controlled functions are only possible, for example, if meas-
ured voltages are connected to the device which have been assigned in accordance with section General.
The required flexible functions must have been set during configuration of the functional scope (Section
2.1.3 Functional
During setting, please follow the sequence as described below. In DIGSI the tabs (setting sheets) should be
edited from left to right.
Configuration Settings
The configuration settings can be executed for each desired flexible function. These settings are fixed and are
not influenced by the setting group change-over. In contrast to this, the group of the function settings as
described in the following next subsection can be executed for each setting group. Therefore, together with
other protection and monitoring function, a setting group change-over can be carried out during operation.
Firstly, a rough selection must be made with regard to the measured value(s) to be evaluated by the flexible
functions. Please note that where the polarity of measured values is important (power), the actual connec-
tions as well as the respective settings must also be taken into consideration. This applies both to the current
polarity for the involved current measuring locations in accordance with Section
and the respective CT data as well as the definition of signs in accordance with Section
Data 2 (address 1107 P,Q sign).
Only those of the following options appear, which compute with the existing measured values and the set
protected object. Select the following:
•
Current measuring location / side, if three-phase currents of a measuring location or side must be eval-
uated (also applicable to single-phase transformer). This applies to the evaluation of individual phase
currents as well as three-phase currents of calculated values, for example symmetrical components (posi-
tive, negative and zero sequence network).
•
Current I1..I12, if single-phase currents are to be evaluated in single-phase busbar protection. For
7UT612 only 7, and for 7UT613 and 7UT633 only 9 currents are possible.
•
Current IZ1..IZ4, if single-phase currents are to be evaluated in the auxiliary single-phase measuring
inputs. For 7UT612 only 2, and for 7UT613 and 7UT633 only 3 auxiliary single-phase measuring inputs
are possible. For 7UT635, only 1 single-phase auxiliary measuring input is possible if 5 three-phase inputs
have been configured.
•
Voltage, if voltages must be evaluated. This is only possible for 7UT613 or 7UT633 with voltage inputs.
•
Active power forward, if forward power must be evaluated. This is only possible for 7UT613 or 7UT633
with voltage measuring inputs. Please ensure to use the correct assignment of voltages to the currents,
from which the power is to be calculated, as well as polarity.
•
Active power reverse, if reverse active power must be evaluated. This is only possible for 7UT613 or
7UT633 with voltage measuring inputs. Please ensure to use the correct assignment of voltages to the
currents, from which the power is to be calculated, as well as polarity..
•
Reactive power forward, if forward reactive power must be evaluated. This is only possible for 7UT613
or 7UT633 with voltage measuring inputs. Please ensure to use the correct assignment of voltages to the
currents, from which the power is to be calculated, as well as polarity.
•
Reactive power reverse, if reverse reactive power must be evaluated. This is only possible for 7UT613 or
7UT633 with voltage measuring inputs. Please ensure to use the correct assignment of voltages to the
currents, from which the power is to be calculated, as well as polarity.
•
Power factor, if the power factor must be evaluated. This is only possible for 7UT613 or 7UT633 with
voltage measuring inputs. Please ensure to use the correct assignment of voltages to the currents, from
which the power is to be calculated, as well as polarity.
•
Frequency, if the frequency must be evaluated. As the frequency is derived from the measuring-circuit
voltage, this is only possible for 7UT613 or 7UT633 with voltage measuring inputs.
If you have selected the 3-phase currents from the pre-selection above, (current measuring location/side), it
is determined which exact measured values are supposed to be used for the evaluation of the flexible func-
tions. The following applies to three-phase currents (incl. single-phase CT):
SIPROTEC 4, 7UT6x, Manual
C53000-G1176-C230-5, Edition 09.2016
Scope).
Functions
2.22 Auxiliary Functions
2.1.4 Power System Data 1
2.1.6 Power System
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