The Origin Energy Power, Mortlake Battery Energy Storage System (BESS) project is a 300 MW/ 650 MWh BESS utilising SMA inverters with grid-forming functionality enabled. This report describes the challenges lessons learnt regarding the requirement for harmonic filters and the ability of OEMs to provide sufficiently detailed information to allow GPS requirement to be fulfilled.
Report extract
The Project is a 300MW/650MWh BESS project being developed by Origin Energy Power Limited (Origin) on land adjacent to Origin’s existing gas fired power station located in Mortlake, Victoria, constructed by Fluence Energy Pty Ltd. The Project utilise SMA inverters and will be commissioned with grid-forming functionality enabled. The grid-forming inverters will be tuned to improve system stability in Victoria. The Project will connect into the grid at the existing AusNet 500kV switchyard at Mortlake Power Station via a new substation.
This lesson learnt report provided an overview of:
- The requirement for harmonic filters on the 500kV grid connection side of the BESS development, to cope with grid stability issues rather than directly BESS issues; and
- Original Equipment Manufacturer’s ability to provide a full suite of the necessary technical detail at a sufficiently early stage to allow for timely completion of GPS models associated with connection applications.