# TwoArea

_Source: `examples/PhasorDynamics/Small/TwoArea/README.md`_

## **Two-Area Kundur Case**

### One-Line Diagram

   
```{image} ../../../../../../examples/PhasorDynamics/Small/TwoArea/twoarea_oneline.png
:align: center
```

   
  Figure 1: Oneline of the two-area Case, courtesy of [PowerWorld](https://www.powerworld.com/WebHelp/)

### Case Description

This is a model derived from the well-known Kundur case in Literature. It has been modified to include exciters for the sake of implementation within GridKit.

Model       | Count  
------------|--------
[Bus](../../../../../models/generated/phasor-dynamics/bus/index.md)         | 10
[Branch](../../../../../models/generated/phasor-dynamics/branch/index.md)     | 15 
[GENROU](../../../../../models/generated/phasor-dynamics/synchronous-machine/genrouw-s/index.md)       | 3
[TGOV1](../../../../../models/generated/phasor-dynamics/governor/tgov1/index.md)        | 3
[IEEET1](../../../../../models/generated/phasor-dynamics/exciter/ieeet1/index.md)  | 3

### Case Events

The following examples needs to be constructed with this case. Currently the only events that have been implemented are faults. This is a practical case to use for modeling a line or generator outage.
- Bus Fault
- Line Outage
- Generator Outage