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Control Functions
6.9 Voltage Controller
V
Target voltage at the end of the line
SetComp
V
Target voltage
Set
I
Load current in %
load
With the following equation, you can determine the percentage of the primary load current of the line from
the rated current of the transformer k (k = 1, 2, ..., 8).
[fo_ibs_load_cur_perc, 1, en_US]
where:
I
Primary load current
load
I
Rated current of the transformer
rated
Example
Application example of the LDC-Z line compensation for the voltage control of 2 transformers connected in
parallel.
[dw_target_voltage_2exam, 1, en_US]
Figure 6-160
In the example, a load current of I
Value
I
(%)
load
Target voltage rising ΔV
496
LDC-Z Line Compensation of 2 Parallel Transformers
= 1430 A results in a voltage drop of V
load
Transformer T
100 %
(%)
4.8 %
load
= 500 V.
load
Transformer T
1
50 %
9.6 %
SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017
2
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