BBSEX1
BBSEX1 model
Context
This voltage regulator model appears under the name ExcBBC in the Common Information Model for Dynamics - Standard Models (2012) (missing reference) and in the IEC 61970-302:2024 version (Commission, 2024).
It represents a static excitation system in which a gated thyristor bridge fed by a transformer at the main generator terminals feeds the main generator directly.
Model use, assumptions, validity domain and limitations
To be completed
Model inputs and output
The input variables are :
| Variable | Description | Units |
|---|---|---|
| UsPu | measured stator voltage | pu (base UNom) |
| UsRefPu | reference stator voltage | pu (base UNom) |
| UOelPu (optional) | output voltage of overexcitation limiter | pu (base UNom) |
| UPssPu (optional) | output voltage of power system stabilizer | pu (base UNom) |
| UUelPu (optional) | output voltage of underexcitation limiter | pu (base UNom) |
The output signal is EfdPu, the excitation voltage in pu (user-selected base voltage).
Model parameters
| Parameter | Description | Units |
|---|---|---|
| EfdMaxPu | Maximum excitation voltage | pu (user-selected base voltage) |
| EfdMinPu | Minimum excitation voltage | pu (user-selected base voltage) |
| K | Voltage regulator gain | pu |
| t1 | Voltage regulator first time constant | s |
| t2 | Voltage regulator second time constant | s |
| t3 | Voltage regulator lead time constant | s |
| t4 | Voltage regulator lag time constant | s |
| tR | Stator voltage filter time constant | s |
| VrMaxPu | Maximum output voltage of voltage regulator | pu (user-selected base voltage) |
| VrMinPu | Minimum output voltage of voltage regulator | pu (user-selected base voltage) |
Model diagram
Open source implementations
This model has been successfully implemented in :
| Software | URL | Language | Open-Source License | Last consulted date | Comments |
|---|---|---|---|---|---|
| Dynawo | Link | Modelica | MPL v2.0 | 24/05/2024 |
References
- Commission, I. E. (2024). Energy management system application program interface (EMS-API) Part 302: Common information model (CIM) dynamics. IEC 61970-302. https://webstore.iec.ch/preview/info_iec61970-302%7Bed2.0%7Db.pdf