[dw_V-constell-3wind-without-imeas-091014.vsd, 2, en_US]
Figure 6-121 Voltage-Controller Constellation for Three-Winding Transformers without Current Measure-
ment
Grid Coupling Transformers
Grid coupling transformers are special power transformers that connect 2 electrical power systems to one
another. The load-side voltage is controlled. The power flow can change during operation. That is why both
voltages and currents, winding 1 and winding 2, voltage measuring inputs (V1, V2) and current measuring
inputs (I1 and I2) must be fed. A voltage must be specified as a function of the load situation to the voltage
controller as the control variable.
The voltages of the windings 1 and 2 of the grid coupling transformers are simultaneously monitored. In the
process, you can select the voltage to be controlled using one parameter. This parameter can be changed
using the settings group switching via the binary input, protocol, or function keys.
Control Functions
6.9 Voltage Controller
SIPROTEC 5, High-Voltage Bay Controller, Manual 455
C53000-G5040-C015-9, Edition 11.2017
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