modelTrafoIdealBase
Extends from Ports.YDportTrafo_p_n (AC two port with Y or Delta topology for transformers).
Information
Terminology (formal, the models are symmetric).
- index 1 (term_p) "primary"
- index 2 (term_n) "secondary"
Contains choice of topology (Delta or Y connection primary and secondary).
Note that transformers with topology 'Delta-Y' and 'Y-Delta' exhibit a phase-shift
of the voltage signals Delta-side versus the signals Y-side of -30 deg.
Delta (prim) - Y (sec): Y is 30 deg shifted versus Delta
Y (prim) - Delta (sec): Delta is -30 deg shifted versus Y
Setting the parameter sh = +-1 shifts the secondary side by +-120 deg.
Transformer ratio.
The winding ratio is determined indirectly by the choice of nominal voltages and the topology of both primary and secondary side.
It may be > 1 or < 1.
Tap changers.
For constant transformer ratio no tap changer input needed.
For variable transformer ratio tap changer input needed.
The sequence of the parameters
v_tc tc voltage levels v_tc[1], v_tc[2], v_tc[3], ...
must be defined in accordance with the input-signals of
tap index of tap voltage levels, v_tc[tap]
Set dynTC = true if tap-index changes during simulation.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Data | par | ||
| Initialization | |||
| Types.Dynamics | dynType | system.dynType | transient or steady-state model |
| PS.Current | i1_start | zeros(PS.n) | start value of primary current |
| PS.Current | i2_start | i1_start | start value of secondary current |
| Boolean | dynTC | false | enable dynamic tap-changing |
| Options | |||
| Boolean | use_tap_1_in | false | = true to enable input tap_1_in |
| Integer | tap_1 | par.tap_neutral[1] | fixed tap_1 position |
| Boolean | use_tap_2_in | false | = true to enable input tap_2_in |
| Integer | tap_2 | par.tap_neutral[2] | fixed tap_2 position |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Ports.ACdq0_p | term_p (from Port_p_n) | positive terminal | |
| Ports.ACdq0_n | term_n (from Port_p_n) | negative terminal | |
| Modelica.Blocks.Interfaces.IntegerInput | tap_1_in | 1: index of voltage level | |
| Modelica.Blocks.Interfaces.IntegerInput | tap_2_in | 2: index of voltage level |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Topology_p | top_p (from YDportTrafo_p_n) | p: Y, Delta or PAR topology | |
| Topology_n | top_n (from YDportTrafo_p_n) | n: Y, Delta or PAR topology | |
| PS.Voltage | v1 (from YDportTrafo_p_n) | voltage conductor | |
| PS.Current | i1 (from YDportTrafo_p_n) | current conductor | |
| PS.Voltage | v_n1 (from YDportTrafo_p_n) | voltage neutral | |
| PS.Current | i_n1 (from YDportTrafo_p_n) | top_p.i_n | current neutral to ground |
| PS.Voltage | v2 (from YDportTrafo_p_n) | voltage conductor | |
| PS.Current | i2 (from YDportTrafo_p_n) | current conductor | |
| PS.Voltage | v_n2 (from YDportTrafo_p_n) | voltage neutral | |
| PS.Current | i_n2 (from YDportTrafo_p_n) | top_n.i_n | current neutral to ground |
Contents
| Name | Description |
|---|---|
 Data |