About the Battery
ElectraNet’s ESCRI-SA grid connected 30 MW / 8 MWh Battery Energy Storage System (BESS) is located seven kilometres south-east of Stansbury adjacent to ElectraNet’s existing Dalrymple substation and will demonstrate how energy storage can strengthen the grid and improve reliability for the lower Yorke Peninsula. The BESS was constructed by Consolidated Power Projects, an Adelaide company, who worked with international power company ABB and battery provider Samsung.
The ESCRI-SA BESS consists of Samsung lithium ion rechargeable batteries integrated via ABB invertors, controller and transformers. The maximum design charge / discharge rate of the BESS is 30 MW and the design capacity of the BESS is 8 MWh at the end of the 12 year design life. The initial installed capacity of the battery is higher to allow for battery deterioration over the BESS design life.
The sizing of the battery capacity has been optimised to be able to provide the following range of primary services:
- Supply of Fast Frequency Response (FFR) to reduce constraints on the Heywood interconnector, resulting in increased flows on the interconnector;
- Reduction of expected unserved energy to Dalrymple following loss of supply, involving islanding of the BESS with the local load, the Wattle Point Wind Farm intended to remain in service at reduced output, and local rooftop PV, until grid supply is restored;
- Market trading of electricity in the National Electricity Market through the provision of market caps (a market derivative/ insurance product) and Frequency Control Ancillary Services (FCAS) services.
The BESS has been built with two identical rows of lithium ion rechargeable batteries coupled to two series of invertors that convert the DC power to AC power. The invertors supply power via six low voltage to 33 kV transformer and are connected via the BESS control room to an underground cable to Dalrymple substation. The batteries are charged from and discharged via this underground cable.
The BESS has two levels of controls. The first level of control is automated and responds to system events is controlled by preprogramed logic. The second level of control for market trading and charging is controlled by AGL. The first level of control take precedence over the second level.
ElectraNet leases the BESS to AGL who operates it to provide competitive market services.
The project is part funded by the Australian Renewable Energy Agency (ARENA).
IN COMMERCIAL OPERATION
Commissioning and Testing: Completed. Integrated islanding testing with the Wattle Point Wind Farm and R2 testing of the Dalrymple battery was finalised in April 2019.
19/11/2019: "Dalrymple Battery wins 2019 Premier's Award for Innovation: Energy sector - Transformation Innovation"
On 15 November 2019, the Dalrymple Battery project won the South Australian 2019 Premier's Award for Innovation: Energy sector - Transformation Innovation.
The award recognises projects that bring substantial benefits to the State from delivering greater value from the energy that South Australians use, that is doing more using the same or less energy.
The Dalrymple Battery project demonstrates how a grid-connected battery is providing greater network security in a transmission system with a high proportion of renewable energy.
13/09/2019: "Dalrymple Battery wins 2019 Energy Network Industry Innovation Award"
ElectraNet’s Dalrymple Battery Energy Storage Project has won the 2019 Energy Network Industry Innovation Award.
Announced at the Energy Networks Australia Annual Dinner in Melbourne on 12 September 2019, the award recognises leadership in the design, development and application of a ground-breaking Australian energy network initiative, technology, service or solution.
In accepting the award on behalf of ElectraNet, Group Executive Asset Management, Rainer Korte, acknowledged and thanked the team at ElectraNet and its project partners for their great work in making the project such a success.
The success of the project, which is in full commercial operation, required significant innovation leadership including
- development of a first-of-its-kind commercial model to support the provision of regulated reliability and security services alongside competitive market services
- navigating the NEM registration, licencing and connection processes for the first time paving the way for others to follow; and
- largest autonomous regional micro-grid development to date co-optimised for both grid-connected and islanded operation with 100% renewables.