Power system model development

Power system models for DER and load

AEMO is improving power system models to better represent the behaviour of DER and load during power system disturbances.

PSS®E models for load and distributed PV in the NEM

In collaboration with Network Service Providers (NSPs), AEMO has developed dynamic models to represent the aggregate behaviour of distributed PV and composite load during NEM power system disturbances. The development of these models, and their validation against historical disturbances is documented in this report:

The models have been calibrated against fifteen different historical disturbances occurring in QLD, NSW, SA and VIC during 2018 to 2021, and are designed to represent distributed PV shake-off in response to voltage disturbances, achieving an uncertainty margin of ±30%.  

The intention is for the models to be used by Transmission Network Service Providers to review network stability limits in periods with high levels of distributed PV generation, so that the possibility of distributed PV shake-off can be incorporated into those limits. This will allow limits to be updated to consider the increasing role of distributed PV in determining the operating envelope of the power system. 

These models represent a first version, and continuing refinement and improvement is expected.

Other models in development

AEMO is also actively working on development and validation of the following models:

  • PSCAD models for load and distributed PV in the NEM (anticipated completion in mid-2023)

  • PowerFactory models for load and distributed PV in the SWIS (anticipated completion in 2023)

Further supporting materials

Materials prepared to support the parameters and development of these models include:

These reports may be useful to those stakeholders utilising AEMO’s models. For further information regarding these reports and the models being developed by AEMO, contact DERProgram@aemo.com.au.

Cookies help us improve your website experience.
By using our website, you agree to our use of cookies.