IEEEG2 / GovSteam 2

Context

This governor model appears under the name GovHydroIEEE0 in the Common Information Model for Dynamics - Standard Models (2012) [1] and in the IEC 61970-302:2024 version [2].

Model use, assumptions, validity domain and limitations

IEEE simplified hydro governor-turbine model. Used for mechanical-hydraulic and electrohydraulic turbine governors, with or without steam feedback

Model inputs and output

The input variables are :

Variable	Description	Units
\(\omega_{Pu}\)	measured angular frequency	\(pu\) (base \(\omega_{Nom}\))
\(\omega_{RefPu}\)	reference angular frequency	\(pu\) (base \(\omega_{Nom}\))
\(P_{mRefPu}\)	reference mechanical power	\(pu\) (base \(P_{NomTurb}\))

The output signal is \(P_{mPu}\), the mechanical power in \(pu\) (base \(P_{NomTurb}\)).

Model parameters

Variable	Description	Units
\(K\)	Governor gain (reciprocal of droop)	\(pu\)
\(P_{MaxPu}\)	Maximum mechanical power	\(pu\) (base \(P_{NomTurb}\))
\(P_{MinPu}\)	Minimum mechanical power	\(pu\) (base \(P_{NomTurb}\))
\(t_1\)	Governor mechanism time constant	\(s\)
\(t_2\)	Turbine power time constant	\(s\)
\(t_3\)	Turbine exhaust temperature time constant	\(s\)
\(t_4\)	Governor lead-lag time constant	\(s\)

Model diagram

Figure 1: IEEEG2 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

1.

Commission IE (2012) Common information model (CIM) standard models 2012. https://doi.org/10.3403/30160442

2.

Commission IE (2024) Energy management system application program interface (EMS-API) part 302: Common information model (CIM) dynamics. IEC 61970-302