modelNode
Single bus node
Information
Basic idea of the model
The Node model is useful when start values for complex voltages (argument and phase) is calulcated externally for a defined operation port. The Newton or also called Newton-Raphson algorithm implemented in Dymola sometimes does not converge properly, so that an external load flow calculation for finding proer start values may be necessary.
In this case, put Node models at each node of the electrical grid model and set the start values in the Node model parameters.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| SI.Voltage | v_n | 400 | Nominal bus voltage |
| Initialization | |||
| SI.PerUnit | v_pu_start | 1 | |
| SI.Angle | delta_start | 0 | |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| TransiEnt.Basics.Interfaces.Electrical.ComplexPowerPort | epp | ||
| TransiEnt.Basics.Interfaces.General.ControlBus | controlBus |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| SI.PerUnit | v_pu | v/v_n | |
| SI.Voltage | v | epp.v | |
| SI.Angle | delta | epp.delta | |
| SI.Frequency | f | epp.f | |
| Modelica.Blocks.Sources.RealExpression | V | ||
| Modelica.Blocks.Sources.RealExpression | V_pu | ||
| Modelica.Blocks.Sources.RealExpression | F | ||
| Modelica.Blocks.Sources.RealExpression | Delta | ||
| Modelica.Blocks.Sources.RealExpression | V_n |