Grid code compliance
The OEM RMS and EMT models provided to the customer for plant-level model development exhibited significant performance and stability issues.
Grid code compliance
The OEM RMS and EMT models provided to the customer for plant-level model development exhibited significant performance and stability issues. These limitations have become more critical following the transition in SSO requirements from SISO to MIMO and the introduction of additional dynamic capability requirements, including the BESS plant's import-mode frequency response capability. Consequently, the existing models are not sufficiently robust or fit-for-purpose to accurately represent the plant's required dynamic performance and support the updated grid compliance requirements.
Our Dynamic modelling team identified all the missing grid code compliance requirements during the test cases and model validation phase and worked with OEM to ensure these functionalities were implemented into the RMS and EMT models. Furthermore, a detailed benchmarking studies were carried out to provide evidence on the dynamic stability and behavior of the BESS plant in both RMS and EMT domain.
The Models were finalized by OEMs to provide full compliance from their end as per the NESO requirements, further a plant model was developed and tested to ensure full compliance. The RMS, EMT and SSO studies are now completed and are in full agreement with the grid code requirements.
The Minety BESS project comprises two phases: Phase 1, an existing 99.8 MW installation, and Phase 2, a proposed 49.9 MW extension connecting to the 132 kV network.
One of the Medium Voltage (MV) skids had a different DC/AC configuration, introducing additional modelling complexity that had to be accurately represented and consistently captured across all studies.
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