The introduction of the mandatory Primary Frequency Response (PFR) in September 2020 improved frequency control of the NEM considerably, as highlighted by AEMO.
In this Chart of the week, we look at NEM mainland FCAS regulation services dispatch before and after PFR implementation and the behaviour of the Hornsdale Power Reserve (HPR) battery in response to those changes. For this purpose, the 4-second historical SCADA data and 30-minute data of HPR for Q1 of 2020 and 2021 were used.
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