On the secondary side, the increment ∆V
sec
is not linear. The largest ∆V
max,sec
in an increment results with the
increment to the highest stage (smallest ratio) and with maximum power-system voltage on the primary side.
[fobdnvrz-150816, 1, en_US]
If the control deviation and the bandwidth are thus correlated, this results in a minimal bandwidth that is to be
set:
[fospnvrz-150816, 1, en_US]
V
rated,sec
Secondary rated voltage of the transformer
V Primary tap voltage of the transformer of tap N
V Primary tap voltage of the transformer of tap N-1
V
max,prim
Maximum primary voltage of the transformer
V
max,sec
Maximum secondary voltage of the transformer
Parameter: T1 characteristic
•
Default setting (_:114) T1 characteristic = Linear
Parameter: T1 delay
•
Default setting (_:115) T1 delay = 40 s
You can adjust the control action so that the smallest number of adjusting commands possible is necessary. To
do this, using T1 characteristic, you set the control response and, using T1 delay, you set a time
delay.
In the Linear setting (linear control response), the control response is independent of the voltage deviation.
A constant time delay applies here.
In the Inverse setting (inverse control response), the time delay is a function of the voltage deviation refer-
enced to Target voltage 1. The greater the control deviation, the faster the control response. The control
quality improves, but the switching frequency increases. The effective time delay results from:
[fovrzzet-211013, 2, en_US]
T
1
– Parameter T1 delay
[fokonisk-211013, 2, en_US]
D = Control deviation
Control Functions
6.9 Voltage Controller
SIPROTEC 5, High-Voltage Bay Controller, Manual 493
C53000-G5040-C015-9, Edition 11.2017
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