Siemens 6MD85, Manual

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Table 10-1 Example Settings for the System Data
Parameters Value
Power system →
VT 3-phase
:
Rated primary voltage
V
CT-prim
15 kV
Power system →
VT 3-phase
:
Rated secondary voltage
V
CT-sec
110 kV
Voltage cont. 2w →
General
:
Rated voltage
V
rated
10.5 kV
Target voltage 1
V
target
11 kV
This results in the secondary voltage V
act-sec
with a phase-to-ground connection being:
[fo_ibs_prim_measur_volt_4, 1, en_US]
Further Tests
Control Deviation
•
Check the control deviation D = 0 % at set point value infeed.
•
Check the measured value of the control deviation D online in DIGSI or on the on-site operation panel of
the device.
Secondary infeed values for the example:
Voltage-transformer connection phase-to-ground: V
act-sec
= 46.6 V
Voltage-transformer connection phase-to-phase: V
act-sec
= 46.6 V ⋅√3 = 80.7 V
Command Outputs
•
Check the output of the Lower adjusting command after the parameterizable time
T1
.
With a set
bandwidth B
of 1 %, this results in the secondary pickup value:
Voltage-transformer connection phase-to-ground: V
act-sec
> 47.1 V
Voltage-transformer connection phase-to-phase: V
act-sec
> 47.1 V ⋅√3 = 81.5 V
•
Check the output of the Higher adjusting command after the parameterizable time
T1
.
With a set
bandwidth B
of 1 %, this results in the secondary pickup value:
Voltage-transformer connection phase-to-ground: V
act-sec
< 46.1 V
Voltage-transformer connection phase-to-phase: V
act-sec
< 46.1 V ⋅√3 = 79.8 V
•
Check the output of the Lower adjusting command after the parameterized time
Fast step down T
delay
.
For the set parameter
Fast step down limit
=
6 %
, the following secondary pickup values result:
Voltage-transformer connection phase-to-ground: V
act-sec
> 49.3 V
Voltage-transformer connection phase-to-phase: V
act-sec
> 49.3 V ⋅√3 = 85.3 V
•
Check the output of the Higher adjusting command after the parameterized time
Fast step up T
delay
.
For the set parameter
Fast step up limit
=
-6 %
, the following secondary pickup values result:
Voltage-transformer connection phase-to-ground: V
act-sec
< 49.3 V
Voltage-transformer connection phase-to-phase: V
act-sec
< 49.3 V ⋅√3 = 85.3 V
Blockings
•
Check the undervoltage blocking
V< Blocking
.
For the set parameter
V< Blocking
=
8 kV
, the following secondary pickup values result:
10.10.1.4
Functional Tests
10.10 Commissioning Hints for Voltage Control
1080 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017