modelYDportTrafo_p_n_n
AC three port with Y or Delta topology for 3-winding transformers
Extends from PortBase (base model adapting Spot to PowerSystems).
Information
Defines Y- and Delta-topology transform of voltage and current variables and contains additionally voltage and current scaling.
Below
term, v, i, w
denote either the 'primary' or 'secondary_a' or 'secondary_b' side
term_p, v1, i1, w1 term_na, v2a, i2a, w2a term_nb, v2b, i2b, w2b
Definitions
v: scaled voltage across conductor i: scaled current through conductor v_n: voltage neutral point if Y-topology i_n: current neutral to ground if Y-topology w: voltage ratio to nominal (any value, but common for primary and secondary)
Relations Y-topology, (v, i: terminal to neutral point)
v = (term.v - {0, 0, sqrt(3)*v_n})/w
term.i = i/w
i_n = sqrt(3)*term.i[3]
Relations Delta-topology, (v, i: phase terminal to phase terminal)
v[1:2] = sqrt(3)*Rot*term.v[1:2]/w v[3] = 0 term.i[1:2] = sqrt(3)*transpose(Rot)*i[1:2]/w term.i[3] = 0 with Rot = rotation_30deg
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Ports.ACdq0_p | term_p | positive terminal | |
| Ports.ACdq0_n | term_na | negative terminal a | |
| Ports.ACdq0_n | term_nb | negative terminal b |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Topology_p | top_p | p: Y or Delta topology | |
| Topology_na | top_na | na: Y or Delta topology | |
| Topology_nb | top_nb | nb: Y or Delta topology | |
| PS.Voltage | v1 | voltage conductor | |
| PS.Current | i1 | current conductor | |
| PS.Voltage | v_n1 | voltage neutral | |
| PS.Current | i_n1 | top_p.i_n | current neutral to ground |
| PS.Voltage | v2a | voltage conductor | |
| PS.Current | i2a | current conductor | |
| PS.Voltage | v_n2a | voltage neutral | |
| PS.Current | i_n2a | top_na.i_n | current neutral to ground |
| PS.Voltage | v2b | voltage conductor | |
| PS.Current | i2b | current conductor | |
| PS.Voltage | v_n2b | voltage neutral | |
| PS.Current | i_n2b | top_nb.i_n | current neutral to ground |
| PS.Voltage | v0 |
Contents
| Name | Description |
|---|---|
 Topology_p | |
 Topology_na | |
 Topology_nb |