# NewEngland

_Source: `examples/PhasorDynamics/Medium/NewEngland/README.md`_

## **IEEE New England**

### One-Line Diagram

   
```{image} ../../../../../../examples/PhasorDynamics/Medium/NewEngland/newengland.png
:align: center
```


  Figure 1: Oneline of the New England IEEE 39-bus case, courtesy of [PowerWorld](https://www.powerworld.com/WebHelp/)

### Case Description

This case is a modified version of the NE 39-bus case, available at the Texas A&M University [Electric Grid Test Case Repository](https://electricgrids.engr.tamu.edu/electric-grid-test-cases/). It has been modified to include GridKit-compatible generator models.

Model       | Count
------------|--------
[Bus](../../../../../models/generated/phasor-dynamics/bus/index.md)         | 39
[Branch](../../../../../models/generated/phasor-dynamics/branch/index.md)     | 46
[GENROU](../../../../../models/generated/phasor-dynamics/synchronous-machine/genrouw-s/index.md)       | 10
[TGOV1](../../../../../models/generated/phasor-dynamics/governor/tgov1/index.md)        | 10
[IEEET1](../../../../../models/generated/phasor-dynamics/exciter/ieeet1/index.md)  | 10
[IEEEST](../../../../../models/generated/phasor-dynamics/stabilizer/ieeest/index.md)  | 10
[LoadZIP](../../../../../models/generated/phasor-dynamics/load-zip/index.md) | 19
[SignalNode](https://github.com/ORNL/GridKit/tree/lukel/readthedocs-dev/GridKit/Model/PhasorDynamics/SignalNode) | 40


### Events

The following event types are provided for this case.

- Bus fault


### Outstanding

#### Dynamics

Only one exciter model is outstanding:
- EXST1_GE

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 outages, or even forced oscillations.
- Line Outage
- Generator Outage
- Forced Oscillations

#### Statics

GridKit models Switched Shunts as [Load](../../../../../models/generated/phasor-dynamics/load/index.md) with constant impedance,but this erases information and our ability to statically re-initialze the model if initalizing at a different operating point.

- Transformers (LTC and Tap Ratios $\neq 1$)