- Lead Organisation
Zeppelin Bend Pty LtdLocation
Australian Capital TerritoryARENA Program
New South Wales
4 February 2019
31 March 2023
- Project PartnersThe ANU, Energy Queensland, Ergon Energy, Energex, Essential Energy, Endeavour Energy, Ausgrid, Reposit Power, Evergen, Redback Technologies, SwitchDIn, NSW Government
The evolve DER project aims to increase the network hosting capacity of distributed energy resources (DER) by maximising their participation in energy, ancillary and network service markets, while ensuring the secure technical limits of the electricity networks are not breached.
- Based on 2020 data, the study found that 51% of consumers with solar on the two LV substations studied exceeded the hosting capacity limits.
- Using physical curtailment based on the hosting capacity value would reduce total generation export at the transformer by 15-20%. Such a radical reduction in generation output highlights the very conservative restrictions that result from fixed physical curtailment.
- Using operating envelopes allows achieving an increase in the net energy export through each transformer and reduces energy export loss due to fixed curtailment.
- Both monthly and 30-minute dynamic operating envelopes result in greater energy export than fixed curtailment, whilst still ensuring that physical and operational network limits are not breached. Thirty-minute dynamic operating envelopes unlock greater energy export than monthly dynamic operating envelopes.
- One of the main advantages of dynamic operating envelopes is that they do not limit the allowed size of the installed solar PV. Using this feature of DOEs, a customer may install a large solar PV system, taking advantage of the extra solar generated throughout the day by ‘filling’ the dynamic operating envelope.
How the project works
The evolve DER project by Zeppelin Bend is a collaboration between industry, academia and government. It has a strong focus on the development of working software systems that will be integrated with the operational technologies used by distribution networks, and the systems used by aggregators to manage DER under their control. Through multiple demonstrations and trials, the evolve project will develop new algorithms and capabilities to identify and ease congestion within the distribution network. This will be achieved through the calculation and publication of operating envelopes for all DER connected to the distribution network.
Area of innovation
The primary innovation of the evolve project will be to demonstrate scalable capabilities and systems for coordinating DER throughout the distribution network. These capabilities are important for the development the Distribution System Operator (DSO) function within the electricity system. To support this, advances in data ingestion, forecasting and analysis will be demonstrated so the solution can be deployed in practical terms.
The evolve project will show how more customers can connect solar PV and storage to the distribution network. This could mean that envisaged limitations of DER connection to electricity networks will be relaxed. In future, the evolve project could also support increased uptake of electric vehicles without major investment in the network poles and wires. Ultimately, this project will develop technologies that will allow distribution networks to evolve with the changing mix of renewables and DER.
As Australians embrace rooftop solar at world-leading rates, work is underway to create a modern, fairer electricity system for the future.
According to the twentieth century model of energy distribution, large power plants fuelled by coal, hydro or gas, generated electricity that was distributed via a centralised grid.
As the world-leader in uptake of rooftop solar, Australia is grappling with the challenge of adapting our ageing 20th century electricity network to cope with an influx of small, behind-the-meter energy assets that consumers are installing in their homes.
To support the transition to an electricity network that is increasingly powered by small-scale energy assets, ARENA has announced $9.6 million funding for 12 new projects and studies.