BuildingSystems.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BaseClasses.IEEE4

# .BuildingSystems.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BaseClasses.IEEE4

Base model of the IEEE 4 nodes test feeder

## Information

This is a partial model that is extended by all the other validation test cases. This model defined replaceable probes and transformer so they can be easily changed when implementing the different tests.

More information can be found in each model that extends this one.

#### Reference results

The reference results for the tests are saved as parameter of the model and compared to the simulated ones. The error between the results (herein called Xmodel) and the references (herein called Xref) are computed in both absolute and relative way. Note that Xmodel and Xref can be either voltage amplitudes or phase angles.

Errabs = Xmodel - Xref

Err% = Errabs / Xref

The variables that store the results of the comparison are listed in the table below

Variable | Description | Unit
--- | --- | ---
`err_V2[3]` | Error between simulated voltage at node 2 and reference results | [V]
`err_V3[3]` | Error between simulated voltage at node 3 and reference results | [V]
`err_V4[3]` | Error between simulated voltage at node 4 and reference results | [V]
`err_Theta2[3]` | Error between simulated phase angle at node 2 and reference phase angle | [rad], displayed as [deg]
`err_Theta3[3]` | Error between simulated phase angle at node 2 and reference phase angle | [rad], displayed as [deg]
`err_Theta4[3]` | Error between simulated phase angle at node 2 and reference phase angle | [rad], displayed as [deg]
`err_V2_percent[3]` | Relative error between simulated voltage at node 2 and reference results | [%]
`err_V3_percent[3]` | Relative error between simulated voltage at node 3 and reference results | [%]
`err_V4_percent[3]` | Relative error between simulated voltage at node 4 and reference results | [%]
`err_Theta2_percent[3]` | Relative error between simulated phase angle at node 2 and reference phase angle | [%]
`err_Theta3_percent[3]` | Relative error between simulated phase angle at node 2 and reference phase angle | [%]
`err_Theta4_percent[3]` | Relative error between simulated phase angle at node 2 and reference phase angle | [%]

## Revisions

- October 1, 2015, by Michael Wetter:
  Removed `loadRL.P_nominal` as the power is an input and `P_nominal` is disabled in this configuration.
- October 8, 2014, by Marco Bonvini:
  Revised documentation.
- June 6, 2014, by Marco Bonvini:
  First implementation.

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